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git01.mediatek.com / haproxy / 9ac143b6070e78afa3086b676f1049c6eb93cc13 / . / src / proto_http.c
blob: 357401fe7cebda6e2914a8a9b2af76e6ba97b081 [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1/*
2 * HTTP protocol analyzer
3 *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4 * Copyright 2000-2011 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <ctype.h>
14#include <errno.h>
15#include <fcntl.h>
16#include <stdio.h>
17#include <stdlib.h>
18#include <string.h>
19#include <syslog.h>
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]20#include <time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]21
22#include <sys/socket.h>
23#include <sys/stat.h>
24#include <sys/types.h>
25
Willy Tarreaub05405a2012-01-23 15:35:52 +0100[diff] [blame]26#include <netinet/tcp.h>
27
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]28#include <common/base64.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]29#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]30#include <common/compat.h>
31#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +0100[diff] [blame]32#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]33#include <common/memory.h>
34#include <common/mini-clist.h>
35#include <common/standard.h>
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]36#include <common/ticks.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]37#include <common/time.h>
38#include <common/uri_auth.h>
39#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]40
41#include <types/capture.h>
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]42#include <types/cli.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]43#include <types/filters.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]44#include <types/global.h>
William Lallemand9ed62032016-11-21 17:49:11 +0100[diff] [blame]45#include <types/stats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]46
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]47#include <proto/acl.h>
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]48#include <proto/action.h>
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]49#include <proto/arg.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]50#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]51#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]52#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]53#include <proto/checks.h>
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]54#include <proto/cli.h>
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]55#include <proto/compression.h>
William Lallemand9ed62032016-11-21 17:49:11 +0100[diff] [blame]56#include <proto/stats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]57#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]58#include <proto/filters.h>
Willy Tarreau03fa5df2010-05-24 21:02:37 +0200[diff] [blame]59#include <proto/frontend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]60#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]61#include <proto/hdr_idx.h>
Thierry FOURNIERed66c292013-11-28 11:05:19 +0100[diff] [blame]62#include <proto/pattern.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]63#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]64#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]65#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]66#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]67#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]68#include <proto/server.h>
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]69#include <proto/stream.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]70#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]71#include <proto/task.h>
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]72#include <proto/pattern.h>
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]73#include <proto/vars.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]74
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]75const char HTTP_100[] =
76 "HTTP/1.1 100 Continue\r\n\r\n";
77
78const struct chunk http_100_chunk = {
79 .str = (char *)&HTTP_100,
80 .len = sizeof(HTTP_100)-1
81};
82
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]83/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]84const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]85 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]86 "Content-length: 0\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]87 "Location: "; /* not terminated since it will be concatenated with the URL */
88
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]89const char *HTTP_302 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]90 "HTTP/1.1 302 Found\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]91 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]92 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]93 "Location: "; /* not terminated since it will be concatenated with the URL */
94
95/* same as 302 except that the browser MUST retry with the GET method */
96const char *HTTP_303 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]97 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]98 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]99 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]100 "Location: "; /* not terminated since it will be concatenated with the URL */
101
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]102
103/* same as 302 except that the browser MUST retry with the same method */
104const char *HTTP_307 =
105 "HTTP/1.1 307 Temporary Redirect\r\n"
106 "Cache-Control: no-cache\r\n"
107 "Content-length: 0\r\n"
108 "Location: "; /* not terminated since it will be concatenated with the URL */
109
110/* same as 301 except that the browser MUST retry with the same method */
111const char *HTTP_308 =
112 "HTTP/1.1 308 Permanent Redirect\r\n"
113 "Content-length: 0\r\n"
114 "Location: "; /* not terminated since it will be concatenated with the URL */
115
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]116/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
117const char *HTTP_401_fmt =
118 "HTTP/1.0 401 Unauthorized\r\n"
119 "Cache-Control: no-cache\r\n"
120 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]121 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]122 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
123 "\r\n"
124 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
125
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]126const char *HTTP_407_fmt =
127 "HTTP/1.0 407 Unauthorized\r\n"
128 "Cache-Control: no-cache\r\n"
129 "Connection: close\r\n"
130 "Content-Type: text/html\r\n"
131 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
132 "\r\n"
Godbach1f1fae62014-12-17 16:32:05 +0800[diff] [blame]133 "<html><body><h1>407 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]134
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]135
136const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]137 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]138 [HTTP_ERR_400] = 400,
139 [HTTP_ERR_403] = 403,
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]140 [HTTP_ERR_405] = 405,
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]141 [HTTP_ERR_408] = 408,
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]142 [HTTP_ERR_429] = 429,
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]143 [HTTP_ERR_500] = 500,
144 [HTTP_ERR_502] = 502,
145 [HTTP_ERR_503] = 503,
146 [HTTP_ERR_504] = 504,
147};
148
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]149static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]150 [HTTP_ERR_200] =
151 "HTTP/1.0 200 OK\r\n"
152 "Cache-Control: no-cache\r\n"
153 "Connection: close\r\n"
154 "Content-Type: text/html\r\n"
155 "\r\n"
156 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
157
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]158 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]159 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]160 "Cache-Control: no-cache\r\n"
161 "Connection: close\r\n"
162 "Content-Type: text/html\r\n"
163 "\r\n"
164 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
165
166 [HTTP_ERR_403] =
167 "HTTP/1.0 403 Forbidden\r\n"
168 "Cache-Control: no-cache\r\n"
169 "Connection: close\r\n"
170 "Content-Type: text/html\r\n"
171 "\r\n"
172 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
173
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]174 [HTTP_ERR_405] =
175 "HTTP/1.0 405 Method Not Allowed\r\n"
176 "Cache-Control: no-cache\r\n"
177 "Connection: close\r\n"
178 "Content-Type: text/html\r\n"
179 "\r\n"
180 "<html><body><h1>405 Method Not Allowed</h1>\nA request was made of a resource using a request method not supported by that resource\n</body></html>\n",
181
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]182 [HTTP_ERR_408] =
183 "HTTP/1.0 408 Request Time-out\r\n"
184 "Cache-Control: no-cache\r\n"
185 "Connection: close\r\n"
186 "Content-Type: text/html\r\n"
187 "\r\n"
188 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
189
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]190 [HTTP_ERR_429] =
191 "HTTP/1.0 429 Too Many Requests\r\n"
192 "Cache-Control: no-cache\r\n"
193 "Connection: close\r\n"
194 "Content-Type: text/html\r\n"
195 "\r\n"
196 "<html><body><h1>429 Too Many Requests</h1>\nYou have sent too many requests in a given amount of time.\n</body></html>\n",
197
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]198 [HTTP_ERR_500] =
Jarno Huuskonen16ad94a2017-01-09 14:17:10 +0200[diff] [blame]199 "HTTP/1.0 500 Internal Server Error\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]200 "Cache-Control: no-cache\r\n"
201 "Connection: close\r\n"
202 "Content-Type: text/html\r\n"
203 "\r\n"
Jarno Huuskonen16ad94a2017-01-09 14:17:10 +0200[diff] [blame]204 "<html><body><h1>500 Internal Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]205
206 [HTTP_ERR_502] =
207 "HTTP/1.0 502 Bad Gateway\r\n"
208 "Cache-Control: no-cache\r\n"
209 "Connection: close\r\n"
210 "Content-Type: text/html\r\n"
211 "\r\n"
212 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
213
214 [HTTP_ERR_503] =
215 "HTTP/1.0 503 Service Unavailable\r\n"
216 "Cache-Control: no-cache\r\n"
217 "Connection: close\r\n"
218 "Content-Type: text/html\r\n"
219 "\r\n"
220 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
221
222 [HTTP_ERR_504] =
223 "HTTP/1.0 504 Gateway Time-out\r\n"
224 "Cache-Control: no-cache\r\n"
225 "Connection: close\r\n"
226 "Content-Type: text/html\r\n"
227 "\r\n"
228 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
229
230};
231
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]232/* status codes available for the stats admin page (strictly 4 chars length) */
233const char *stat_status_codes[STAT_STATUS_SIZE] = {
234 [STAT_STATUS_DENY] = "DENY",
235 [STAT_STATUS_DONE] = "DONE",
236 [STAT_STATUS_ERRP] = "ERRP",
237 [STAT_STATUS_EXCD] = "EXCD",
238 [STAT_STATUS_NONE] = "NONE",
239 [STAT_STATUS_PART] = "PART",
240 [STAT_STATUS_UNKN] = "UNKN",
241};
242
243
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]244/* List head of all known action keywords for "http-request" */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]245struct action_kw_list http_req_keywords = {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]246 .list = LIST_HEAD_INIT(http_req_keywords.list)
247};
248
249/* List head of all known action keywords for "http-response" */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]250struct action_kw_list http_res_keywords = {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]251 .list = LIST_HEAD_INIT(http_res_keywords.list)
252};
253
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]254/* We must put the messages here since GCC cannot initialize consts depending
255 * on strlen().
256 */
257struct chunk http_err_chunks[HTTP_ERR_SIZE];
258
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]259/* this struct is used between calls to smp_fetch_hdr() or smp_fetch_cookie() */
260static struct hdr_ctx static_hdr_ctx;
261
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]262#define FD_SETS_ARE_BITFIELDS
263#ifdef FD_SETS_ARE_BITFIELDS
264/*
265 * This map is used with all the FD_* macros to check whether a particular bit
266 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
267 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
268 * byte should be encoded. Be careful to always pass bytes from 0 to 255
269 * exclusively to the macros.
270 */
271fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
272fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]273fd_set http_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]274
275#else
276#error "Check if your OS uses bitfields for fd_sets"
277#endif
278
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]279static int http_apply_redirect_rule(struct redirect_rule *rule, struct stream *s, struct http_txn *txn);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]280
David Carlier7365f7d2016-04-04 11:54:42 +0100[diff] [blame]281static inline int http_msg_forward_body(struct stream *s, struct http_msg *msg);
282static inline int http_msg_forward_chunked_body(struct stream *s, struct http_msg *msg);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]283
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]284/* This function returns a reason associated with the HTTP status.
285 * This function never fails, a message is always returned.
286 */
287const char *get_reason(unsigned int status)
288{
289 switch (status) {
290 case 100: return "Continue";
291 case 101: return "Switching Protocols";
292 case 102: return "Processing";
293 case 200: return "OK";
294 case 201: return "Created";
295 case 202: return "Accepted";
296 case 203: return "Non-Authoritative Information";
297 case 204: return "No Content";
298 case 205: return "Reset Content";
299 case 206: return "Partial Content";
300 case 207: return "Multi-Status";
301 case 210: return "Content Different";
302 case 226: return "IM Used";
303 case 300: return "Multiple Choices";
304 case 301: return "Moved Permanently";
305 case 302: return "Moved Temporarily";
306 case 303: return "See Other";
307 case 304: return "Not Modified";
308 case 305: return "Use Proxy";
309 case 307: return "Temporary Redirect";
310 case 308: return "Permanent Redirect";
311 case 310: return "Too many Redirects";
312 case 400: return "Bad Request";
313 case 401: return "Unauthorized";
314 case 402: return "Payment Required";
315 case 403: return "Forbidden";
316 case 404: return "Not Found";
317 case 405: return "Method Not Allowed";
318 case 406: return "Not Acceptable";
319 case 407: return "Proxy Authentication Required";
320 case 408: return "Request Time-out";
321 case 409: return "Conflict";
322 case 410: return "Gone";
323 case 411: return "Length Required";
324 case 412: return "Precondition Failed";
325 case 413: return "Request Entity Too Large";
326 case 414: return "Request-URI Too Long";
327 case 415: return "Unsupported Media Type";
328 case 416: return "Requested range unsatisfiable";
329 case 417: return "Expectation failed";
330 case 418: return "I'm a teapot";
331 case 422: return "Unprocessable entity";
332 case 423: return "Locked";
333 case 424: return "Method failure";
334 case 425: return "Unordered Collection";
335 case 426: return "Upgrade Required";
336 case 428: return "Precondition Required";
337 case 429: return "Too Many Requests";
338 case 431: return "Request Header Fields Too Large";
339 case 449: return "Retry With";
340 case 450: return "Blocked by Windows Parental Controls";
341 case 451: return "Unavailable For Legal Reasons";
342 case 456: return "Unrecoverable Error";
343 case 499: return "client has closed connection";
344 case 500: return "Internal Server Error";
345 case 501: return "Not Implemented";
Jarno Huuskonen59af2df2016-12-28 10:49:01 +0200[diff] [blame]346 case 502: return "Bad Gateway or Proxy Error";
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]347 case 503: return "Service Unavailable";
348 case 504: return "Gateway Time-out";
349 case 505: return "HTTP Version not supported";
350 case 506: return "Variant also negociate";
351 case 507: return "Insufficient storage";
352 case 508: return "Loop detected";
353 case 509: return "Bandwidth Limit Exceeded";
354 case 510: return "Not extended";
355 case 511: return "Network authentication required";
356 case 520: return "Web server is returning an unknown error";
357 default:
358 switch (status) {
359 case 100 ... 199: return "Informational";
360 case 200 ... 299: return "Success";
361 case 300 ... 399: return "Redirection";
362 case 400 ... 499: return "Client Error";
363 case 500 ... 599: return "Server Error";
364 default: return "Other";
365 }
366 }
367}
368
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]369/* This function returns HTTP_ERR_<num> (enum) matching http status code.
370 * Returned value should match codes from http_err_codes.
371 */
372static const int http_get_status_idx(unsigned int status)
373{
374 switch (status) {
375 case 200: return HTTP_ERR_200;
376 case 400: return HTTP_ERR_400;
377 case 403: return HTTP_ERR_403;
378 case 405: return HTTP_ERR_405;
379 case 408: return HTTP_ERR_408;
380 case 429: return HTTP_ERR_429;
381 case 500: return HTTP_ERR_500;
382 case 502: return HTTP_ERR_502;
383 case 503: return HTTP_ERR_503;
384 case 504: return HTTP_ERR_504;
385 default: return HTTP_ERR_500;
386 }
387}
388
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]389void init_proto_http()
390{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]391 int i;
392 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]393 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]394
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]395 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
396 if (!http_err_msgs[msg]) {
397 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
398 abort();
399 }
400
401 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
402 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
403 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]404
405 /* initialize the log header encoding map : '{|}"#' should be encoded with
406 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
407 * URL encoding only requires '"', '#' to be encoded as well as non-
408 * printable characters above.
409 */
410 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
411 memset(url_encode_map, 0, sizeof(url_encode_map));
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]412 memset(http_encode_map, 0, sizeof(url_encode_map));
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]413 for (i = 0; i < 32; i++) {
414 FD_SET(i, hdr_encode_map);
415 FD_SET(i, url_encode_map);
416 }
417 for (i = 127; i < 256; i++) {
418 FD_SET(i, hdr_encode_map);
419 FD_SET(i, url_encode_map);
420 }
421
422 tmp = "\"#{|}";
423 while (*tmp) {
424 FD_SET(*tmp, hdr_encode_map);
425 tmp++;
426 }
427
428 tmp = "\"#";
429 while (*tmp) {
430 FD_SET(*tmp, url_encode_map);
431 tmp++;
432 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]433
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]434 /* initialize the http header encoding map. The draft httpbis define the
435 * header content as:
436 *
437 * HTTP-message = start-line
438 * *( header-field CRLF )
439 * CRLF
440 * [ message-body ]
441 * header-field = field-name ":" OWS field-value OWS
442 * field-value = *( field-content / obs-fold )
443 * field-content = field-vchar [ 1*( SP / HTAB ) field-vchar ]
444 * obs-fold = CRLF 1*( SP / HTAB )
445 * field-vchar = VCHAR / obs-text
446 * VCHAR = %x21-7E
447 * obs-text = %x80-FF
448 *
449 * All the chars are encoded except "VCHAR", "obs-text", SP and HTAB.
450 * The encoded chars are form 0x00 to 0x08, 0x0a to 0x1f and 0x7f. The
451 * "obs-fold" is volontary forgotten because haproxy remove this.
452 */
453 memset(http_encode_map, 0, sizeof(http_encode_map));
454 for (i = 0x00; i <= 0x08; i++)
455 FD_SET(i, http_encode_map);
456 for (i = 0x0a; i <= 0x1f; i++)
457 FD_SET(i, http_encode_map);
458 FD_SET(0x7f, http_encode_map);
459
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]460 /* memory allocations */
Willy Tarreau63986c72015-04-03 22:55:33 +0200[diff] [blame]461 pool2_http_txn = create_pool("http_txn", sizeof(struct http_txn), MEM_F_SHARED);
Stéphane Cottin23e9e932017-05-18 08:58:41 +0200[diff] [blame]462 pool2_requri = create_pool("requri", global.tune.requri_len , MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]463 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]464}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]465
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]466/*
467 * We have 26 list of methods (1 per first letter), each of which can have
468 * up to 3 entries (2 valid, 1 null).
469 */
470struct http_method_desc {
Willy Tarreauc8987b32013-12-06 23:43:17 +0100[diff] [blame]471 enum http_meth_t meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]472 int len;
473 const char text[8];
474};
475
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]476const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]477 ['C' - 'A'] = {
478 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
479 },
480 ['D' - 'A'] = {
481 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
482 },
483 ['G' - 'A'] = {
484 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
485 },
486 ['H' - 'A'] = {
487 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
488 },
Christopher Fauletd57ad642015-07-31 14:26:57 +0200[diff] [blame]489 ['O' - 'A'] = {
490 [0] = { .meth = HTTP_METH_OPTIONS , .len=7, .text="OPTIONS" },
491 },
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]492 ['P' - 'A'] = {
493 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
494 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
495 },
496 ['T' - 'A'] = {
497 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
498 },
499 /* rest is empty like this :
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]500 * [0] = { .meth = HTTP_METH_OTHER , .len=0, .text="" },
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]501 */
502};
503
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]504const struct http_method_name http_known_methods[HTTP_METH_OTHER] = {
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]505 [HTTP_METH_OPTIONS] = { "OPTIONS", 7 },
506 [HTTP_METH_GET] = { "GET", 3 },
507 [HTTP_METH_HEAD] = { "HEAD", 4 },
508 [HTTP_METH_POST] = { "POST", 4 },
509 [HTTP_METH_PUT] = { "PUT", 3 },
510 [HTTP_METH_DELETE] = { "DELETE", 6 },
511 [HTTP_METH_TRACE] = { "TRACE", 5 },
512 [HTTP_METH_CONNECT] = { "CONNECT", 7 },
513};
514
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]515/* It is about twice as fast on recent architectures to lookup a byte in a
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]516 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]517 * RFC2616/RFC5234/RFC7230 for those chars. A token is any ASCII char that is
518 * neither a separator nor a CTL char. An http ver_token is any ASCII which can
519 * be found in an HTTP version, which includes 'H', 'T', 'P', '/', '.' and any
520 * digit. Note: please do not overwrite values in assignment since gcc-2.95
521 * will not handle them correctly. It's worth noting that chars 128..255 are
522 * nothing, not even control chars.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]523 */
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]524const unsigned char http_char_classes[256] = {
525 [ 0] = HTTP_FLG_CTL,
526 [ 1] = HTTP_FLG_CTL,
527 [ 2] = HTTP_FLG_CTL,
528 [ 3] = HTTP_FLG_CTL,
529 [ 4] = HTTP_FLG_CTL,
530 [ 5] = HTTP_FLG_CTL,
531 [ 6] = HTTP_FLG_CTL,
532 [ 7] = HTTP_FLG_CTL,
533 [ 8] = HTTP_FLG_CTL,
534 [ 9] = HTTP_FLG_SPHT | HTTP_FLG_LWS | HTTP_FLG_SEP | HTTP_FLG_CTL,
535 [ 10] = HTTP_FLG_CRLF | HTTP_FLG_LWS | HTTP_FLG_CTL,
536 [ 11] = HTTP_FLG_CTL,
537 [ 12] = HTTP_FLG_CTL,
538 [ 13] = HTTP_FLG_CRLF | HTTP_FLG_LWS | HTTP_FLG_CTL,
539 [ 14] = HTTP_FLG_CTL,
540 [ 15] = HTTP_FLG_CTL,
541 [ 16] = HTTP_FLG_CTL,
542 [ 17] = HTTP_FLG_CTL,
543 [ 18] = HTTP_FLG_CTL,
544 [ 19] = HTTP_FLG_CTL,
545 [ 20] = HTTP_FLG_CTL,
546 [ 21] = HTTP_FLG_CTL,
547 [ 22] = HTTP_FLG_CTL,
548 [ 23] = HTTP_FLG_CTL,
549 [ 24] = HTTP_FLG_CTL,
550 [ 25] = HTTP_FLG_CTL,
551 [ 26] = HTTP_FLG_CTL,
552 [ 27] = HTTP_FLG_CTL,
553 [ 28] = HTTP_FLG_CTL,
554 [ 29] = HTTP_FLG_CTL,
555 [ 30] = HTTP_FLG_CTL,
556 [ 31] = HTTP_FLG_CTL,
557 [' '] = HTTP_FLG_SPHT | HTTP_FLG_LWS | HTTP_FLG_SEP,
558 ['!'] = HTTP_FLG_TOK,
559 ['"'] = HTTP_FLG_SEP,
560 ['#'] = HTTP_FLG_TOK,
561 ['$'] = HTTP_FLG_TOK,
562 ['%'] = HTTP_FLG_TOK,
563 ['&'] = HTTP_FLG_TOK,
564 [ 39] = HTTP_FLG_TOK,
565 ['('] = HTTP_FLG_SEP,
566 [')'] = HTTP_FLG_SEP,
567 ['*'] = HTTP_FLG_TOK,
568 ['+'] = HTTP_FLG_TOK,
569 [','] = HTTP_FLG_SEP,
570 ['-'] = HTTP_FLG_TOK,
571 ['.'] = HTTP_FLG_TOK | HTTP_FLG_VER,
572 ['/'] = HTTP_FLG_SEP | HTTP_FLG_VER,
573 ['0'] = HTTP_FLG_TOK | HTTP_FLG_VER,
574 ['1'] = HTTP_FLG_TOK | HTTP_FLG_VER,
575 ['2'] = HTTP_FLG_TOK | HTTP_FLG_VER,
576 ['3'] = HTTP_FLG_TOK | HTTP_FLG_VER,
577 ['4'] = HTTP_FLG_TOK | HTTP_FLG_VER,
578 ['5'] = HTTP_FLG_TOK | HTTP_FLG_VER,
579 ['6'] = HTTP_FLG_TOK | HTTP_FLG_VER,
580 ['7'] = HTTP_FLG_TOK | HTTP_FLG_VER,
581 ['8'] = HTTP_FLG_TOK | HTTP_FLG_VER,
582 ['9'] = HTTP_FLG_TOK | HTTP_FLG_VER,
583 [':'] = HTTP_FLG_SEP,
584 [';'] = HTTP_FLG_SEP,
585 ['<'] = HTTP_FLG_SEP,
586 ['='] = HTTP_FLG_SEP,
587 ['>'] = HTTP_FLG_SEP,
588 ['?'] = HTTP_FLG_SEP,
589 ['@'] = HTTP_FLG_SEP,
590 ['A'] = HTTP_FLG_TOK,
591 ['B'] = HTTP_FLG_TOK,
592 ['C'] = HTTP_FLG_TOK,
593 ['D'] = HTTP_FLG_TOK,
594 ['E'] = HTTP_FLG_TOK,
595 ['F'] = HTTP_FLG_TOK,
596 ['G'] = HTTP_FLG_TOK,
597 ['H'] = HTTP_FLG_TOK | HTTP_FLG_VER,
598 ['I'] = HTTP_FLG_TOK,
599 ['J'] = HTTP_FLG_TOK,
600 ['K'] = HTTP_FLG_TOK,
601 ['L'] = HTTP_FLG_TOK,
602 ['M'] = HTTP_FLG_TOK,
603 ['N'] = HTTP_FLG_TOK,
604 ['O'] = HTTP_FLG_TOK,
605 ['P'] = HTTP_FLG_TOK | HTTP_FLG_VER,
606 ['Q'] = HTTP_FLG_TOK,
607 ['R'] = HTTP_FLG_TOK | HTTP_FLG_VER,
608 ['S'] = HTTP_FLG_TOK | HTTP_FLG_VER,
609 ['T'] = HTTP_FLG_TOK | HTTP_FLG_VER,
610 ['U'] = HTTP_FLG_TOK,
611 ['V'] = HTTP_FLG_TOK,
612 ['W'] = HTTP_FLG_TOK,
613 ['X'] = HTTP_FLG_TOK,
614 ['Y'] = HTTP_FLG_TOK,
615 ['Z'] = HTTP_FLG_TOK,
616 ['['] = HTTP_FLG_SEP,
617 [ 92] = HTTP_FLG_SEP,
618 [']'] = HTTP_FLG_SEP,
619 ['^'] = HTTP_FLG_TOK,
620 ['_'] = HTTP_FLG_TOK,
621 ['`'] = HTTP_FLG_TOK,
622 ['a'] = HTTP_FLG_TOK,
623 ['b'] = HTTP_FLG_TOK,
624 ['c'] = HTTP_FLG_TOK,
625 ['d'] = HTTP_FLG_TOK,
626 ['e'] = HTTP_FLG_TOK,
627 ['f'] = HTTP_FLG_TOK,
628 ['g'] = HTTP_FLG_TOK,
629 ['h'] = HTTP_FLG_TOK,
630 ['i'] = HTTP_FLG_TOK,
631 ['j'] = HTTP_FLG_TOK,
632 ['k'] = HTTP_FLG_TOK,
633 ['l'] = HTTP_FLG_TOK,
634 ['m'] = HTTP_FLG_TOK,
635 ['n'] = HTTP_FLG_TOK,
636 ['o'] = HTTP_FLG_TOK,
637 ['p'] = HTTP_FLG_TOK,
638 ['q'] = HTTP_FLG_TOK,
639 ['r'] = HTTP_FLG_TOK,
640 ['s'] = HTTP_FLG_TOK,
641 ['t'] = HTTP_FLG_TOK,
642 ['u'] = HTTP_FLG_TOK,
643 ['v'] = HTTP_FLG_TOK,
644 ['w'] = HTTP_FLG_TOK,
645 ['x'] = HTTP_FLG_TOK,
646 ['y'] = HTTP_FLG_TOK,
647 ['z'] = HTTP_FLG_TOK,
648 ['{'] = HTTP_FLG_SEP,
649 ['|'] = HTTP_FLG_TOK,
650 ['}'] = HTTP_FLG_SEP,
651 ['~'] = HTTP_FLG_TOK,
652 [127] = HTTP_FLG_CTL,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]653};
654
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]655/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]656 * Adds a header and its CRLF at the tail of the message's buffer, just before
657 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]658 * The header is also automatically added to the index <hdr_idx>, and the end
659 * of headers is automatically adjusted. The number of bytes added is returned
660 * on success, otherwise <0 is returned indicating an error.
661 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]662int http_header_add_tail(struct http_msg *msg, struct hdr_idx *hdr_idx, const char *text)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]663{
664 int bytes, len;
665
666 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]667 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]668 if (!bytes)
669 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]670 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]671 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
672}
673
674/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]675 * Adds a header and its CRLF at the tail of the message's buffer, just before
676 * the last CRLF. <len> bytes are copied, not counting the CRLF. If <text> is NULL, then
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]677 * the buffer is only opened and the space reserved, but nothing is copied.
678 * The header is also automatically added to the index <hdr_idx>, and the end
679 * of headers is automatically adjusted. The number of bytes added is returned
680 * on success, otherwise <0 is returned indicating an error.
681 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]682int http_header_add_tail2(struct http_msg *msg,
683 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]684{
685 int bytes;
686
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]687 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]688 if (!bytes)
689 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]690 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]691 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
692}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]693
694/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]695 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
696 * If so, returns the position of the first non-space character relative to
697 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
698 * to return a pointer to the place after the first space. Returns 0 if the
699 * header name does not match. Checks are case-insensitive.
700 */
701int http_header_match2(const char *hdr, const char *end,
702 const char *name, int len)
703{
704 const char *val;
705
706 if (hdr + len >= end)
707 return 0;
708 if (hdr[len] != ':')
709 return 0;
710 if (strncasecmp(hdr, name, len) != 0)
711 return 0;
712 val = hdr + len + 1;
713 while (val < end && HTTP_IS_SPHT(*val))
714 val++;
715 if ((val >= end) && (len + 2 <= end - hdr))
716 return len + 2; /* we may replace starting from second space */
717 return val - hdr;
718}
719
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]720/* Find the first or next occurrence of header <name> in message buffer <sol>
721 * using headers index <idx>, and return it in the <ctx> structure. This
722 * structure holds everything necessary to use the header and find next
723 * occurrence. If its <idx> member is 0, the header is searched from the
724 * beginning. Otherwise, the next occurrence is returned. The function returns
725 * 1 when it finds a value, and 0 when there is no more. It is very similar to
726 * http_find_header2() except that it is designed to work with full-line headers
727 * whose comma is not a delimiter but is part of the syntax. As a special case,
728 * if ctx->val is NULL when searching for a new values of a header, the current
729 * header is rescanned. This allows rescanning after a header deletion.
730 */
731int http_find_full_header2(const char *name, int len,
732 char *sol, struct hdr_idx *idx,
733 struct hdr_ctx *ctx)
734{
735 char *eol, *sov;
736 int cur_idx, old_idx;
737
738 cur_idx = ctx->idx;
739 if (cur_idx) {
740 /* We have previously returned a header, let's search another one */
741 sol = ctx->line;
742 eol = sol + idx->v[cur_idx].len;
743 goto next_hdr;
744 }
745
746 /* first request for this header */
747 sol += hdr_idx_first_pos(idx);
748 old_idx = 0;
749 cur_idx = hdr_idx_first_idx(idx);
750 while (cur_idx) {
751 eol = sol + idx->v[cur_idx].len;
752
753 if (len == 0) {
754 /* No argument was passed, we want any header.
755 * To achieve this, we simply build a fake request. */
756 while (sol + len < eol && sol[len] != ':')
757 len++;
758 name = sol;
759 }
760
761 if ((len < eol - sol) &&
762 (sol[len] == ':') &&
763 (strncasecmp(sol, name, len) == 0)) {
764 ctx->del = len;
765 sov = sol + len + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]766 while (sov < eol && HTTP_IS_LWS(*sov))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]767 sov++;
768
769 ctx->line = sol;
770 ctx->prev = old_idx;
771 ctx->idx = cur_idx;
772 ctx->val = sov - sol;
773 ctx->tws = 0;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]774 while (eol > sov && HTTP_IS_LWS(*(eol - 1))) {
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]775 eol--;
776 ctx->tws++;
777 }
778 ctx->vlen = eol - sov;
779 return 1;
780 }
781 next_hdr:
782 sol = eol + idx->v[cur_idx].cr + 1;
783 old_idx = cur_idx;
784 cur_idx = idx->v[cur_idx].next;
785 }
786 return 0;
787}
788
Willy Tarreauc90dc232015-02-20 13:51:36 +0100[diff] [blame]789/* Find the first or next header field in message buffer <sol> using headers
790 * index <idx>, and return it in the <ctx> structure. This structure holds
791 * everything necessary to use the header and find next occurrence. If its
792 * <idx> member is 0, the first header is retrieved. Otherwise, the next
793 * occurrence is returned. The function returns 1 when it finds a value, and
794 * 0 when there is no more. It is equivalent to http_find_full_header2() with
795 * no header name.
796 */
797int http_find_next_header(char *sol, struct hdr_idx *idx, struct hdr_ctx *ctx)
798{
799 char *eol, *sov;
800 int cur_idx, old_idx;
801 int len;
802
803 cur_idx = ctx->idx;
804 if (cur_idx) {
805 /* We have previously returned a header, let's search another one */
806 sol = ctx->line;
807 eol = sol + idx->v[cur_idx].len;
808 goto next_hdr;
809 }
810
811 /* first request for this header */
812 sol += hdr_idx_first_pos(idx);
813 old_idx = 0;
814 cur_idx = hdr_idx_first_idx(idx);
815 while (cur_idx) {
816 eol = sol + idx->v[cur_idx].len;
817
818 len = 0;
819 while (1) {
820 if (len >= eol - sol)
821 goto next_hdr;
822 if (sol[len] == ':')
823 break;
824 len++;
825 }
826
827 ctx->del = len;
828 sov = sol + len + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]829 while (sov < eol && HTTP_IS_LWS(*sov))
Willy Tarreauc90dc232015-02-20 13:51:36 +0100[diff] [blame]830 sov++;
831
832 ctx->line = sol;
833 ctx->prev = old_idx;
834 ctx->idx = cur_idx;
835 ctx->val = sov - sol;
836 ctx->tws = 0;
837
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]838 while (eol > sov && HTTP_IS_LWS(*(eol - 1))) {
Willy Tarreauc90dc232015-02-20 13:51:36 +0100[diff] [blame]839 eol--;
840 ctx->tws++;
841 }
842 ctx->vlen = eol - sov;
843 return 1;
844
845 next_hdr:
846 sol = eol + idx->v[cur_idx].cr + 1;
847 old_idx = cur_idx;
848 cur_idx = idx->v[cur_idx].next;
849 }
850 return 0;
851}
852
Lukas Tribus23953682017-04-28 13:24:30 +0000[diff] [blame]853/* Find the end of the header value contained between <s> and <e>. See RFC7230,
854 * par 3.2 for more information. Note that it requires a valid header to return
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]855 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]856 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]857char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]858{
859 int quoted, qdpair;
860
861 quoted = qdpair = 0;
Willy Tarreaue6d9c212016-11-05 18:23:38 +0100[diff] [blame]862
863#if defined(__x86_64__) || \
864 defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) || \
865 defined(__ARM_ARCH_7A__)
866 /* speedup: skip everything not a comma nor a double quote */
867 for (; s <= e - sizeof(int); s += sizeof(int)) {
868 unsigned int c = *(int *)s; // comma
869 unsigned int q = c; // quote
870
871 c ^= 0x2c2c2c2c; // contains one zero on a comma
872 q ^= 0x22222222; // contains one zero on a quote
873
874 c = (c - 0x01010101) & ~c; // contains 0x80 below a comma
875 q = (q - 0x01010101) & ~q; // contains 0x80 below a quote
876
877 if ((c | q) & 0x80808080)
878 break; // found a comma or a quote
879 }
880#endif
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]881 for (; s < e; s++) {
882 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]883 else if (quoted) {
884 if (*s == '\\') qdpair = 1;
885 else if (*s == '"') quoted = 0;
886 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]887 else if (*s == '"') quoted = 1;
888 else if (*s == ',') return s;
889 }
890 return s;
891}
892
893/* Find the first or next occurrence of header <name> in message buffer <sol>
894 * using headers index <idx>, and return it in the <ctx> structure. This
895 * structure holds everything necessary to use the header and find next
896 * occurrence. If its <idx> member is 0, the header is searched from the
897 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]898 * 1 when it finds a value, and 0 when there is no more. It is designed to work
899 * with headers defined as comma-separated lists. As a special case, if ctx->val
900 * is NULL when searching for a new values of a header, the current header is
901 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]902 */
903int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]904 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]905 struct hdr_ctx *ctx)
906{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]907 char *eol, *sov;
908 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]909
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]910 cur_idx = ctx->idx;
911 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]912 /* We have previously returned a value, let's search
913 * another one on the same line.
914 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]915 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]916 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]917 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]918 eol = sol + idx->v[cur_idx].len;
919
920 if (sov >= eol)
921 /* no more values in this header */
922 goto next_hdr;
923
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]924 /* values remaining for this header, skip the comma but save it
925 * for later use (eg: for header deletion).
926 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]927 sov++;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]928 while (sov < eol && HTTP_IS_LWS((*sov)))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]929 sov++;
930
931 goto return_hdr;
932 }
933
934 /* first request for this header */
935 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]936 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]937 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]938 while (cur_idx) {
939 eol = sol + idx->v[cur_idx].len;
940
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]941 if (len == 0) {
942 /* No argument was passed, we want any header.
943 * To achieve this, we simply build a fake request. */
944 while (sol + len < eol && sol[len] != ':')
945 len++;
946 name = sol;
947 }
948
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]949 if ((len < eol - sol) &&
950 (sol[len] == ':') &&
951 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]952 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]953 sov = sol + len + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]954 while (sov < eol && HTTP_IS_LWS(*sov))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]955 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]956
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]957 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]958 ctx->prev = old_idx;
959 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]960 ctx->idx = cur_idx;
961 ctx->val = sov - sol;
962
963 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]964 ctx->tws = 0;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]965 while (eol > sov && HTTP_IS_LWS(*(eol - 1))) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]966 eol--;
967 ctx->tws++;
968 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]969 ctx->vlen = eol - sov;
970 return 1;
971 }
972 next_hdr:
973 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]974 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]975 cur_idx = idx->v[cur_idx].next;
976 }
977 return 0;
978}
979
980int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]981 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]982 struct hdr_ctx *ctx)
983{
984 return http_find_header2(name, strlen(name), sol, idx, ctx);
985}
986
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]987/* Remove one value of a header. This only works on a <ctx> returned by one of
988 * the http_find_header functions. The value is removed, as well as surrounding
989 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]990 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]991 * message <msg>. The new index is returned. If it is zero, it means there is
992 * no more header, so any processing may stop. The ctx is always left in a form
993 * that can be handled by http_find_header2() to find next occurrence.
994 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]995int http_remove_header2(struct http_msg *msg, struct hdr_idx *idx, struct hdr_ctx *ctx)
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]996{
997 int cur_idx = ctx->idx;
998 char *sol = ctx->line;
999 struct hdr_idx_elem *hdr;
1000 int delta, skip_comma;
1001
1002 if (!cur_idx)
1003 return 0;
1004
1005 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]1006 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]1007 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1008 delta = buffer_replace2(msg->chn->buf, sol, sol + hdr->len + hdr->cr + 1, NULL, 0);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]1009 http_msg_move_end(msg, delta);
1010 idx->used--;
1011 hdr->len = 0; /* unused entry */
1012 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]1013 if (idx->tail == ctx->idx)
1014 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]1015 ctx->idx = ctx->prev; /* walk back to the end of previous header */
Willy Tarreau7c1c2172015-01-07 17:23:50 +0100[diff] [blame]1016 ctx->line -= idx->v[ctx->idx].len + idx->v[ctx->idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]1017 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]1018 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]1019 return ctx->idx;
1020 }
1021
1022 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]1023 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
1024 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]1025 */
1026
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]1027 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1028 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]1029 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]1030 NULL, 0);
1031 hdr->len += delta;
1032 http_msg_move_end(msg, delta);
1033 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]1034 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]1035 return ctx->idx;
1036}
1037
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1038/* This function handles a server error at the stream interface level. The
1039 * stream interface is assumed to be already in a closed state. An optional
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1040 * message is copied into the input buffer.
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1041 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]1042 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1043 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1044static void http_server_error(struct stream *s, struct stream_interface *si,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1045 int err, int finst, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1046{
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1047 FLT_STRM_CB(s, flt_http_reply(s, s->txn->status, msg));
Willy Tarreau2bb4a962014-11-28 11:11:05 +0100[diff] [blame]1048 channel_auto_read(si_oc(si));
1049 channel_abort(si_oc(si));
1050 channel_auto_close(si_oc(si));
1051 channel_erase(si_oc(si));
1052 channel_auto_close(si_ic(si));
1053 channel_auto_read(si_ic(si));
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1054 if (msg)
Willy Tarreau2bb4a962014-11-28 11:11:05 +0100[diff] [blame]1055 bo_inject(si_ic(si), msg->str, msg->len);
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1056 if (!(s->flags & SF_ERR_MASK))
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]1057 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1058 if (!(s->flags & SF_FINST_MASK))
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]1059 s->flags |= finst;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1060}
1061
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1062/* This function returns the appropriate error location for the given stream
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1063 * and message.
1064 */
1065
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1066struct chunk *http_error_message(struct stream *s)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1067{
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1068 const int msgnum = http_get_status_idx(s->txn->status);
1069
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1070 if (s->be->errmsg[msgnum].str)
1071 return &s->be->errmsg[msgnum];
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]1072 else if (strm_fe(s)->errmsg[msgnum].str)
1073 return &strm_fe(s)->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1074 else
1075 return &http_err_chunks[msgnum];
1076}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1077
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]1078void
1079http_reply_and_close(struct stream *s, short status, struct chunk *msg)
1080{
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]1081 s->txn->flags &= ~TX_WAIT_NEXT_RQ;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]1082 FLT_STRM_CB(s, flt_http_reply(s, status, msg));
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]1083 stream_int_retnclose(&s->si[0], msg);
1084}
1085
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1086/*
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]1087 * returns a known method among HTTP_METH_* or HTTP_METH_OTHER for all unknown
1088 * ones.
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1089 */
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]1090enum http_meth_t find_http_meth(const char *str, const int len)
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1091{
1092 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1093 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1094
1095 m = ((unsigned)*str - 'A');
1096
1097 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1098 for (h = http_methods[m]; h->len > 0; h++) {
1099 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1100 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1101 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1102 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1103 };
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1104 }
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]1105 return HTTP_METH_OTHER;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1106}
1107
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1108/* Parse the URI from the given transaction (which is assumed to be in request
1109 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
1110 * It is returned otherwise.
1111 */
Thierry FOURNIER3c331782015-09-17 19:33:35 +0200[diff] [blame]1112char *http_get_path(struct http_txn *txn)
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1113{
1114 char *ptr, *end;
1115
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1116 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1117 end = ptr + txn->req.sl.rq.u_l;
1118
1119 if (ptr >= end)
1120 return NULL;
1121
Lukas Tribus23953682017-04-28 13:24:30 +0000[diff] [blame]1122 /* RFC7230, par. 2.7 :
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1123 * Request-URI = "*" | absuri | abspath | authority
1124 */
1125
1126 if (*ptr == '*')
1127 return NULL;
1128
1129 if (isalpha((unsigned char)*ptr)) {
1130 /* this is a scheme as described by RFC3986, par. 3.1 */
1131 ptr++;
1132 while (ptr < end &&
1133 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
1134 ptr++;
1135 /* skip '://' */
1136 if (ptr == end || *ptr++ != ':')
1137 return NULL;
1138 if (ptr == end || *ptr++ != '/')
1139 return NULL;
1140 if (ptr == end || *ptr++ != '/')
1141 return NULL;
1142 }
1143 /* skip [user[:passwd]@]host[:[port]] */
1144
1145 while (ptr < end && *ptr != '/')
1146 ptr++;
1147
1148 if (ptr == end)
1149 return NULL;
1150
1151 /* OK, we got the '/' ! */
1152 return ptr;
1153}
1154
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]1155/* Parse the URI from the given string and look for the "/" beginning the PATH.
1156 * If not found, return NULL. It is returned otherwise.
1157 */
1158static char *
1159http_get_path_from_string(char *str)
1160{
1161 char *ptr = str;
1162
1163 /* RFC2616, par. 5.1.2 :
1164 * Request-URI = "*" | absuri | abspath | authority
1165 */
1166
1167 if (*ptr == '*')
1168 return NULL;
1169
1170 if (isalpha((unsigned char)*ptr)) {
1171 /* this is a scheme as described by RFC3986, par. 3.1 */
1172 ptr++;
1173 while (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.')
1174 ptr++;
1175 /* skip '://' */
1176 if (*ptr == '\0' || *ptr++ != ':')
1177 return NULL;
1178 if (*ptr == '\0' || *ptr++ != '/')
1179 return NULL;
1180 if (*ptr == '\0' || *ptr++ != '/')
1181 return NULL;
1182 }
1183 /* skip [user[:passwd]@]host[:[port]] */
1184
1185 while (*ptr != '\0' && *ptr != ' ' && *ptr != '/')
1186 ptr++;
1187
1188 if (*ptr == '\0' || *ptr == ' ')
1189 return NULL;
1190
1191 /* OK, we got the '/' ! */
1192 return ptr;
1193}
1194
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]1195/* Returns a 302 for a redirectable request that reaches a server working in
1196 * in redirect mode. This may only be called just after the stream interface
1197 * has moved to SI_ST_ASS. Unprocessable requests are left unchanged and will
1198 * follow normal proxy processing. NOTE: this function is designed to support
1199 * being called once data are scheduled for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1200 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1201void http_perform_server_redirect(struct stream *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1202{
1203 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1204 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1205 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1206 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1207
1208 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1209 trash.len = strlen(HTTP_302);
1210 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1211
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]1212 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1213
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1214 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1215 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1216 return;
1217
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]1218 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1219 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1220 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
1221 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]1222 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1223
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1224 /* 3: add the request URI. Since it was already forwarded, we need
1225 * to temporarily rewind the buffer.
1226 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1227 txn = s->txn;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1228 b_rew(s->req.buf, rewind = http_hdr_rewind(&txn->req));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1229
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1230 path = http_get_path(txn);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1231 len = buffer_count(s->req.buf, path, b_ptr(s->req.buf, txn->req.sl.rq.u + txn->req.sl.rq.u_l));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1232
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1233 b_adv(s->req.buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1234
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1235 if (!path)
1236 return;
1237
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1238 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1239 return;
1240
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1241 memcpy(trash.str + trash.len, path, len);
1242 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1243
1244 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1245 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
1246 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1247 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1248 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
1249 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1250 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1251
1252 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]1253 si_shutr(si);
1254 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1255 si->err_type = SI_ET_NONE;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1256 si->state = SI_ST_CLO;
1257
1258 /* send the message */
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1259 txn->status = 302;
1260 http_server_error(s, si, SF_ERR_LOCAL, SF_FINST_C, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1261
1262 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau4521ba62013-01-24 01:25:25 +0100[diff] [blame]1263 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500[diff] [blame]1264 srv_set_sess_last(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1265}
1266
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]1267/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1268 * that the server side is closed. Note that err_type is actually a
1269 * bitmask, where almost only aborts may be cumulated with other
1270 * values. We consider that aborted operations are more important
1271 * than timeouts or errors due to the fact that nobody else in the
1272 * logs might explain incomplete retries. All others should avoid
1273 * being cumulated. It should normally not be possible to have multiple
1274 * aborts at once, but just in case, the first one in sequence is reported.
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1275 * Note that connection errors appearing on the second request of a keep-alive
1276 * connection are not reported since this allows the client to retry.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1277 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1278void http_return_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1279{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]1280 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1281
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1282 /* set s->txn->status for http_error_message(s) */
1283 s->txn->status = 503;
1284
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1285 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1286 http_server_error(s, si, SF_ERR_CLICL, SF_FINST_Q,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1287 http_error_message(s));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1288 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1289 http_server_error(s, si, SF_ERR_CLICL, SF_FINST_C,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1290 (s->txn->flags & TX_NOT_FIRST) ? NULL :
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1291 http_error_message(s));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1292 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1293 http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_Q,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1294 http_error_message(s));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1295 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1296 http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_Q,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1297 http_error_message(s));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1298 else if (err_type & SI_ET_CONN_TO)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1299 http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_C,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1300 (s->txn->flags & TX_NOT_FIRST) ? NULL :
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1301 http_error_message(s));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1302 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1303 http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_C,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1304 (s->flags & SF_SRV_REUSED) ? NULL :
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1305 http_error_message(s));
Willy Tarreau2d400bb2012-05-14 12:11:47 +0200[diff] [blame]1306 else if (err_type & SI_ET_CONN_RES)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1307 http_server_error(s, si, SF_ERR_RESOURCE, SF_FINST_C,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1308 (s->txn->flags & TX_NOT_FIRST) ? NULL :
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1309 http_error_message(s));
1310 else { /* SI_ET_CONN_OTHER and others */
1311 s->txn->status = 500;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1312 http_server_error(s, si, SF_ERR_INTERNAL, SF_FINST_C,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1313 http_error_message(s));
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1314 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1315}
1316
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1317extern const char sess_term_cond[8];
1318extern const char sess_fin_state[8];
1319extern const char *monthname[12];
Willy Tarreau63986c72015-04-03 22:55:33 +0200[diff] [blame]1320struct pool_head *pool2_http_txn;
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]1321struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]1322struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]1323struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1324
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1325/*
1326 * Capture headers from message starting at <som> according to header list
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1327 * <cap_hdr>, and fill the <cap> pointers appropriately.
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1328 */
1329void capture_headers(char *som, struct hdr_idx *idx,
1330 char **cap, struct cap_hdr *cap_hdr)
1331{
1332 char *eol, *sol, *col, *sov;
1333 int cur_idx;
1334 struct cap_hdr *h;
1335 int len;
1336
1337 sol = som + hdr_idx_first_pos(idx);
1338 cur_idx = hdr_idx_first_idx(idx);
1339
1340 while (cur_idx) {
1341 eol = sol + idx->v[cur_idx].len;
1342
1343 col = sol;
1344 while (col < eol && *col != ':')
1345 col++;
1346
1347 sov = col + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]1348 while (sov < eol && HTTP_IS_LWS(*sov))
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1349 sov++;
1350
1351 for (h = cap_hdr; h; h = h->next) {
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1352 if (h->namelen && (h->namelen == col - sol) &&
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1353 (strncasecmp(sol, h->name, h->namelen) == 0)) {
1354 if (cap[h->index] == NULL)
1355 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]1356 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1357
1358 if (cap[h->index] == NULL) {
1359 Alert("HTTP capture : out of memory.\n");
1360 continue;
1361 }
1362
1363 len = eol - sov;
1364 if (len > h->len)
1365 len = h->len;
1366
1367 memcpy(cap[h->index], sov, len);
1368 cap[h->index][len]=0;
1369 }
1370 }
1371 sol = eol + idx->v[cur_idx].cr + 1;
1372 cur_idx = idx->v[cur_idx].next;
1373 }
1374}
1375
1376
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1377/* either we find an LF at <ptr> or we jump to <bad>.
1378 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1379#define EXPECT_LF_HERE(ptr, bad, st) do { if (unlikely(*(ptr) != '\n')) { state = st; goto bad;}; } while (0)
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1380
1381/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
1382 * otherwise to <http_msg_ood> with <state> set to <st>.
1383 */
1384#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
1385 ptr++; \
1386 if (likely(ptr < end)) \
1387 goto good; \
1388 else { \
1389 state = (st); \
1390 goto http_msg_ood; \
1391 } \
1392 } while (0)
1393
1394
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1395/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1396 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1397 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
1398 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
1399 * will give undefined results.
1400 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1401 * and that msg->sol points to the beginning of the response.
1402 * If a complete line is found (which implies that at least one CR or LF is
1403 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1404 * returned indicating an incomplete line (which does not mean that parts have
1405 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1406 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1407 * upon next call.
1408 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1409 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1410 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1411 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1412 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1413 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1414const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1415 enum ht_state state, const char *ptr, const char *end,
1416 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1417{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1418 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1419
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1420 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1421 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1422 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1423 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1424 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
1425
1426 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1427 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1428 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1429 }
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1430 msg->err_state = HTTP_MSG_RPVER;
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1431 state = HTTP_MSG_ERROR;
1432 break;
1433
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1434 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1435 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1436 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1437 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1438 goto http_msg_rpcode;
1439 }
1440 if (likely(HTTP_IS_SPHT(*ptr)))
1441 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1442 /* so it's a CR/LF, this is invalid */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1443 msg->err_state = HTTP_MSG_RPVER_SP;
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1444 state = HTTP_MSG_ERROR;
1445 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1446
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1447 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1448 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1449 if (likely(!HTTP_IS_LWS(*ptr)))
1450 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
1451
1452 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1453 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1454 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1455 }
1456
1457 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1458 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1459 http_msg_rsp_reason:
1460 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1461 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1462 msg->sl.st.r_l = 0;
1463 goto http_msg_rpline_eol;
1464
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1465 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1466 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1467 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1468 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1469 goto http_msg_rpreason;
1470 }
1471 if (likely(HTTP_IS_SPHT(*ptr)))
1472 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1473 /* so it's a CR/LF, so there is no reason phrase */
1474 goto http_msg_rsp_reason;
1475
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1476 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1477 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1478 if (likely(!HTTP_IS_CRLF(*ptr)))
1479 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1480 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1481 http_msg_rpline_eol:
1482 /* We have seen the end of line. Note that we do not
1483 * necessarily have the \n yet, but at least we know that we
1484 * have EITHER \r OR \n, otherwise the response would not be
1485 * complete. We can then record the response length and return
1486 * to the caller which will be able to register it.
1487 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1488 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1489 return ptr;
1490
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1491 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1492#ifdef DEBUG_FULL
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1493 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1494 exit(1);
1495#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1496 ;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1497 }
1498
1499 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1500 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1501 if (ret_state)
1502 *ret_state = state;
1503 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1504 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1505 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1506}
1507
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1508/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1509 * This function parses a request line between <ptr> and <end>, starting with
1510 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1511 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1512 * will give undefined results.
1513 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1514 * and that msg->sol points to the beginning of the request.
1515 * If a complete line is found (which implies that at least one CR or LF is
1516 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1517 * returned indicating an incomplete line (which does not mean that parts have
1518 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1519 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1520 * upon next call.
1521 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1522 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1523 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1524 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1525 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1526 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1527const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1528 enum ht_state state, const char *ptr, const char *end,
1529 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1530{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1531 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1532
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1533 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1534 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1535 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1536 if (likely(HTTP_IS_TOKEN(*ptr)))
1537 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1538
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1539 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1540 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1541 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1542 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1543
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1544 if (likely(HTTP_IS_CRLF(*ptr))) {
1545 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1546 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1547 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1548 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1549 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1550 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1551 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1552 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1553 msg->sl.rq.v_l = 0;
1554 goto http_msg_rqline_eol;
1555 }
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1556 msg->err_state = HTTP_MSG_RQMETH;
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1557 state = HTTP_MSG_ERROR;
1558 break;
1559
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1560 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1561 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1562 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1563 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1564 goto http_msg_rquri;
1565 }
1566 if (likely(HTTP_IS_SPHT(*ptr)))
1567 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1568 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1569 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1570
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1571 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1572 http_msg_rquri:
Willy Tarreau5f10ea32016-11-05 17:52:06 +0100[diff] [blame]1573#if defined(__x86_64__) || \
1574 defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) || \
1575 defined(__ARM_ARCH_7A__)
1576 /* speedup: skip bytes not between 0x21 and 0x7e inclusive */
1577 while (ptr <= end - sizeof(int)) {
1578 int x = *(int *)ptr - 0x21212121;
1579 if (x & 0x80808080)
1580 break;
1581
1582 x -= 0x5e5e5e5e;
1583 if (!(x & 0x80808080))
1584 break;
1585
1586 ptr += sizeof(int);
1587 }
1588#endif
Willy Tarreau2afff9c2017-01-04 14:44:46 +0100[diff] [blame]1589 if (ptr >= end) {
1590 state = HTTP_MSG_RQURI;
1591 goto http_msg_ood;
1592 }
Willy Tarreau5f10ea32016-11-05 17:52:06 +0100[diff] [blame]1593 http_msg_rquri2:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1594 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau5f10ea32016-11-05 17:52:06 +0100[diff] [blame]1595 EAT_AND_JUMP_OR_RETURN(http_msg_rquri2, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1596
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1597 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1598 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1599 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1600 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1601
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1602 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1603 /* non-ASCII chars are forbidden unless option
1604 * accept-invalid-http-request is enabled in the frontend.
1605 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1606 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1607 if (msg->err_pos < -1)
1608 goto invalid_char;
1609 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1610 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1611 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1612 }
1613
1614 if (likely(HTTP_IS_CRLF(*ptr))) {
1615 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1616 goto http_msg_req09_uri_e;
1617 }
1618
1619 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1620 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1621 msg->err_pos = ptr - msg_start;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1622 msg->err_state = HTTP_MSG_RQURI;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1623 state = HTTP_MSG_ERROR;
1624 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1625
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1626 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1627 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1628 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1629 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1630 goto http_msg_rqver;
1631 }
1632 if (likely(HTTP_IS_SPHT(*ptr)))
1633 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1634 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1635 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1636
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1637 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1638 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1639 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1640 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1641
1642 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1643 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1644 http_msg_rqline_eol:
1645 /* We have seen the end of line. Note that we do not
1646 * necessarily have the \n yet, but at least we know that we
1647 * have EITHER \r OR \n, otherwise the request would not be
1648 * complete. We can then record the request length and return
1649 * to the caller which will be able to register it.
1650 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1651 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1652 return ptr;
1653 }
1654
1655 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1656 msg->err_state = HTTP_MSG_RQVER;
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1657 state = HTTP_MSG_ERROR;
1658 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1659
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1660 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1661#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1662 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1663 exit(1);
1664#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1665 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1666 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1667
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1668 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1669 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1670 if (ret_state)
1671 *ret_state = state;
1672 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1673 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1674 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1675}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1676
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1677/*
1678 * Returns the data from Authorization header. Function may be called more
1679 * than once so data is stored in txn->auth_data. When no header is found
1680 * or auth method is unknown auth_method is set to HTTP_AUTH_WRONG to avoid
Thierry FOURNIER98d96952014-01-23 12:13:02 +0100[diff] [blame]1681 * searching again for something we are unable to find anyway. However, if
1682 * the result if valid, the cache is not reused because we would risk to
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1683 * have the credentials overwritten by another stream in parallel.
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1684 */
1685
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]1686/* This bufffer is initialized in the file 'src/haproxy.c'. This length is
1687 * set according to global.tune.bufsize.
1688 */
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1689char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1690
1691int
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1692get_http_auth(struct stream *s)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1693{
1694
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1695 struct http_txn *txn = s->txn;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1696 struct chunk auth_method;
1697 struct hdr_ctx ctx;
1698 char *h, *p;
1699 int len;
1700
1701#ifdef DEBUG_AUTH
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1702 printf("Auth for stream %p: %d\n", s, txn->auth.method);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1703#endif
1704
1705 if (txn->auth.method == HTTP_AUTH_WRONG)
1706 return 0;
1707
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1708 txn->auth.method = HTTP_AUTH_WRONG;
1709
1710 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1711
1712 if (txn->flags & TX_USE_PX_CONN) {
1713 h = "Proxy-Authorization";
1714 len = strlen(h);
1715 } else {
1716 h = "Authorization";
1717 len = strlen(h);
1718 }
1719
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1720 if (!http_find_header2(h, len, s->req.buf->p, &txn->hdr_idx, &ctx))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1721 return 0;
1722
1723 h = ctx.line + ctx.val;
1724
1725 p = memchr(h, ' ', ctx.vlen);
Willy Tarreau5c557d12016-03-13 08:17:02 +0100[diff] [blame]1726 len = p - h;
1727 if (!p || len <= 0)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1728 return 0;
1729
David Carlier7365f7d2016-04-04 11:54:42 +0100[diff] [blame]1730 if (chunk_initlen(&auth_method, h, 0, len) != 1)
1731 return 0;
1732
Willy Tarreau5c557d12016-03-13 08:17:02 +0100[diff] [blame]1733 chunk_initlen(&txn->auth.method_data, p + 1, 0, ctx.vlen - len - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1734
1735 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1736
1737 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1738 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1739
1740 if (len < 0)
1741 return 0;
1742
1743
1744 get_http_auth_buff[len] = '\0';
1745
1746 p = strchr(get_http_auth_buff, ':');
1747
1748 if (!p)
1749 return 0;
1750
1751 txn->auth.user = get_http_auth_buff;
1752 *p = '\0';
1753 txn->auth.pass = p+1;
1754
1755 txn->auth.method = HTTP_AUTH_BASIC;
1756 return 1;
1757 }
1758
1759 return 0;
1760}
1761
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1762
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1763/*
1764 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1765 * depending on the initial msg->msg_state. The caller is responsible for
1766 * ensuring that the message does not wrap. The function can be preempted
1767 * everywhere when data are missing and recalled at the exact same location
1768 * with no information loss. The message may even be realigned between two
1769 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1770 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1771 * fields. Note that msg->sol will be initialized after completing the first
1772 * state, so that none of the msg pointers has to be initialized prior to the
1773 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1774 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1775void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1776{
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1777 enum ht_state state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1778 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1779 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1780
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1781 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1782 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1783 ptr = buf->p + msg->next;
1784 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1785
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1786 if (unlikely(ptr >= end))
1787 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1788
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1789 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1790 /*
1791 * First, states that are specific to the response only.
1792 * We check them first so that request and headers are
1793 * closer to each other (accessed more often).
1794 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1795 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1796 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1797 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1798 /* we have a start of message, but we have to check
1799 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1800 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1801 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1802 if (unlikely(ptr != buf->p)) {
1803 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1804 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1805 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1806 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1807 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1808 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1809 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1810 hdr_idx_init(idx);
1811 state = HTTP_MSG_RPVER;
1812 goto http_msg_rpver;
1813 }
1814
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1815 if (unlikely(!HTTP_IS_CRLF(*ptr))) {
1816 state = HTTP_MSG_RPBEFORE;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1817 goto http_msg_invalid;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1818 }
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1819
1820 if (unlikely(*ptr == '\n'))
1821 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1822 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1823 /* stop here */
1824
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1825 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1826 http_msg_rpbefore_cr:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1827 EXPECT_LF_HERE(ptr, http_msg_invalid, HTTP_MSG_RPBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1828 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1829 /* stop here */
1830
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1831 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1832 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1833 case HTTP_MSG_RPVER_SP:
1834 case HTTP_MSG_RPCODE:
1835 case HTTP_MSG_RPCODE_SP:
1836 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1837 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1838 state, ptr, end,
1839 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1840 if (unlikely(!ptr))
1841 return;
1842
1843 /* we have a full response and we know that we have either a CR
1844 * or an LF at <ptr>.
1845 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1846 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1847
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1848 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1849 if (likely(*ptr == '\r'))
1850 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1851 goto http_msg_rpline_end;
1852
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1853 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1854 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1855 /* msg->sol must point to the first of CR or LF. */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1856 EXPECT_LF_HERE(ptr, http_msg_invalid, HTTP_MSG_RPLINE_END);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1857 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1858 /* stop here */
1859
1860 /*
1861 * Second, states that are specific to the request only
1862 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1863 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1864 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1865 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1866 /* we have a start of message, but we have to check
1867 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1868 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1869 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1870 if (likely(ptr != buf->p)) {
1871 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1872 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1873 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1874 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1875 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1876 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1877 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1878 state = HTTP_MSG_RQMETH;
1879 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1880 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1881
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1882 if (unlikely(!HTTP_IS_CRLF(*ptr))) {
1883 state = HTTP_MSG_RQBEFORE;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1884 goto http_msg_invalid;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1885 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1886
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1887 if (unlikely(*ptr == '\n'))
1888 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1889 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1890 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1891
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1892 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1893 http_msg_rqbefore_cr:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1894 EXPECT_LF_HERE(ptr, http_msg_invalid, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1895 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1896 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1897
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1898 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1899 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1900 case HTTP_MSG_RQMETH_SP:
1901 case HTTP_MSG_RQURI:
1902 case HTTP_MSG_RQURI_SP:
1903 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1904 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1905 state, ptr, end,
1906 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1907 if (unlikely(!ptr))
1908 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1909
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1910 /* we have a full request and we know that we have either a CR
1911 * or an LF at <ptr>.
1912 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1913 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1914
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1915 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1916 if (likely(*ptr == '\r'))
1917 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1918 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1919
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1920 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1921 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1922 /* check for HTTP/0.9 request : no version information available.
1923 * msg->sol must point to the first of CR or LF.
1924 */
1925 if (unlikely(msg->sl.rq.v_l == 0))
1926 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1927
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1928 EXPECT_LF_HERE(ptr, http_msg_invalid, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1929 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1930 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1931
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1932 /*
1933 * Common states below
1934 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1935 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1936 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1937 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1938 if (likely(!HTTP_IS_CRLF(*ptr))) {
1939 goto http_msg_hdr_name;
1940 }
1941
1942 if (likely(*ptr == '\r'))
1943 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1944 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1945
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1946 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1947 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1948 /* assumes msg->sol points to the first char */
1949 if (likely(HTTP_IS_TOKEN(*ptr)))
1950 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1951
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1952 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1953 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1954
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1955 if (likely(msg->err_pos < -1) || *ptr == '\n') {
1956 state = HTTP_MSG_HDR_NAME;
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1957 goto http_msg_invalid;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1958 }
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1959
1960 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1961 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1962
1963 /* and we still accept this non-token character */
1964 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1965
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1966 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1967 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1968 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1969 if (likely(HTTP_IS_SPHT(*ptr)))
1970 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1971
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1972 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1973 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1974
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1975 if (likely(!HTTP_IS_CRLF(*ptr))) {
1976 goto http_msg_hdr_val;
1977 }
1978
1979 if (likely(*ptr == '\r'))
1980 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1981 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1982
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1983 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1984 http_msg_hdr_l1_lf:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1985 EXPECT_LF_HERE(ptr, http_msg_invalid, HTTP_MSG_HDR_L1_LF);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1986 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lws, HTTP_MSG_HDR_L1_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1987
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1988 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1989 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1990 if (likely(HTTP_IS_SPHT(*ptr))) {
1991 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1992 for (; buf->p + msg->sov < ptr; msg->sov++)
1993 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1994 goto http_msg_hdr_l1_sp;
1995 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1996 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1997 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1998 goto http_msg_complete_header;
1999
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2000 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]2001 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2002 /* assumes msg->sol points to the first char, and msg->sov
2003 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2004 */
Willy Tarreau0431f9d2016-11-05 17:35:40 +0100[diff] [blame]2005
2006 /* speedup: we'll skip packs of 4 or 8 bytes not containing bytes 0x0D
2007 * and lower. In fact since most of the time is spent in the loop, we
2008 * also remove the sign bit test so that bytes 0x8e..0x0d break the
2009 * loop, but we don't care since they're very rare in header values.
2010 */
2011#if defined(__x86_64__)
2012 while (ptr <= end - sizeof(long)) {
2013 if ((*(long *)ptr - 0x0e0e0e0e0e0e0e0eULL) & 0x8080808080808080ULL)
2014 goto http_msg_hdr_val2;
2015 ptr += sizeof(long);
2016 }
2017#endif
2018#if defined(__x86_64__) || \
2019 defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) || \
2020 defined(__ARM_ARCH_7A__)
2021 while (ptr <= end - sizeof(int)) {
2022 if ((*(int*)ptr - 0x0e0e0e0e) & 0x80808080)
2023 goto http_msg_hdr_val2;
2024 ptr += sizeof(int);
2025 }
2026#endif
Willy Tarreau2afff9c2017-01-04 14:44:46 +0100[diff] [blame]2027 if (ptr >= end) {
2028 state = HTTP_MSG_HDR_VAL;
2029 goto http_msg_ood;
2030 }
Willy Tarreau0431f9d2016-11-05 17:35:40 +0100[diff] [blame]2031 http_msg_hdr_val2:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2032 if (likely(!HTTP_IS_CRLF(*ptr)))
Willy Tarreau0431f9d2016-11-05 17:35:40 +0100[diff] [blame]2033 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val2, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2034
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2035 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2036 /* Note: we could also copy eol into ->eoh so that we have the
2037 * real header end in case it ends with lots of LWS, but is this
2038 * really needed ?
2039 */
2040 if (likely(*ptr == '\r'))
2041 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
2042 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2043
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2044 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]2045 http_msg_hdr_l2_lf:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2046 EXPECT_LF_HERE(ptr, http_msg_invalid, HTTP_MSG_HDR_L2_LF);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2047 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lws, HTTP_MSG_HDR_L2_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2048
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2049 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]2050 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2051 if (unlikely(HTTP_IS_SPHT(*ptr))) {
2052 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2053 for (; buf->p + msg->eol < ptr; msg->eol++)
2054 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2055 goto http_msg_hdr_val;
2056 }
2057 http_msg_complete_header:
2058 /*
2059 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2060 * Assumes msg->sol points to the first char, msg->sov points
2061 * to the first character of the value and msg->eol to the
2062 * first CR or LF so we know how the line ends. We insert last
2063 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2064 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2065 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2066 idx, idx->tail) < 0)) {
2067 state = HTTP_MSG_HDR_L2_LWS;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2068 goto http_msg_invalid;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2069 }
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]2070
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2071 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2072 if (likely(!HTTP_IS_CRLF(*ptr))) {
2073 goto http_msg_hdr_name;
2074 }
2075
2076 if (likely(*ptr == '\r'))
2077 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
2078 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]2079
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2080 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]2081 http_msg_last_lf:
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]2082 /* Assumes msg->sol points to the first of either CR or LF.
2083 * Sets ->sov and ->next to the total header length, ->eoh to
2084 * the last CRLF, and ->eol to the last CRLF length (1 or 2).
2085 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2086 EXPECT_LF_HERE(ptr, http_msg_invalid, HTTP_MSG_LAST_LF);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2087 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2088 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]2089 msg->eoh = msg->sol;
2090 msg->sol = 0;
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]2091 msg->eol = msg->sov - msg->eoh;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]2092 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2093 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]2094
2095 case HTTP_MSG_ERROR:
2096 /* this may only happen if we call http_msg_analyser() twice with an error */
2097 break;
2098
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2099 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]2100#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2101 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
2102 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]2103#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]2104 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2105 }
2106 http_msg_ood:
2107 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]2108 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2109 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2110 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2111
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2112 http_msg_invalid:
2113 /* invalid message */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2114 msg->err_state = state;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]2115 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2116 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2117 return;
2118}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]2119
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2120/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
2121 * conversion succeeded, 0 in case of error. If the request was already 1.X,
2122 * nothing is done and 1 is returned.
2123 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2124static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2125{
2126 int delta;
2127 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2128 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2129
2130 if (msg->sl.rq.v_l != 0)
2131 return 1;
2132
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]2133 /* RFC 1945 allows only GET for HTTP/0.9 requests */
2134 if (txn->meth != HTTP_METH_GET)
2135 return 0;
2136
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2137 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2138
2139 if (msg->sl.rq.u_l == 0) {
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]2140 /* HTTP/0.9 requests *must* have a request URI, per RFC 1945 */
2141 return 0;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2142 }
2143 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2144 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " HTTP/1.0\r\n", 11);
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]2145 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2146 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]2147 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2148 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2149 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2150 NULL, NULL);
2151 if (unlikely(!cur_end))
2152 return 0;
2153
2154 /* we have a full HTTP/1.0 request now and we know that
2155 * we have either a CR or an LF at <ptr>.
2156 */
2157 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
2158 return 1;
2159}
2160
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2161/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2162 * and "keep-alive" values. If we already know that some headers may safely
2163 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2164 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
2165 * - bit 1 means remove "keep-alive" headers (in HTTP/1.1 reqs/resp to 1.1).
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2166 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2167 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
2168 * found, and TX_CON_*_SET is adjusted depending on what is left so only
2169 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2170 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2171 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2172void http_parse_connection_header(struct http_txn *txn, struct http_msg *msg, int to_del)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2173{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2174 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2175 const char *hdr_val = "Connection";
2176 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2177
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2178 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2179 return;
2180
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2181 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2182 hdr_val = "Proxy-Connection";
2183 hdr_len = 16;
2184 }
2185
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2186 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2187 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2188 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2189 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
2190 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2191 if (to_del & 2)
2192 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2193 else
2194 txn->flags |= TX_CON_KAL_SET;
2195 }
2196 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
2197 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2198 if (to_del & 1)
2199 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2200 else
2201 txn->flags |= TX_CON_CLO_SET;
2202 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2203 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
2204 txn->flags |= TX_HDR_CONN_UPG;
2205 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2206 }
2207
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2208 txn->flags |= TX_HDR_CONN_PRS;
2209 return;
2210}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2211
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2212/* Apply desired changes on the Connection: header. Values may be removed and/or
2213 * added depending on the <wanted> flags, which are exclusively composed of
2214 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
2215 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
2216 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2217void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2218{
2219 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2220 const char *hdr_val = "Connection";
2221 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2222
2223 ctx.idx = 0;
2224
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2225
2226 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2227 hdr_val = "Proxy-Connection";
2228 hdr_len = 16;
2229 }
2230
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2231 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2232 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2233 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
2234 if (wanted & TX_CON_KAL_SET)
2235 txn->flags |= TX_CON_KAL_SET;
2236 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2237 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2238 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2239 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
2240 if (wanted & TX_CON_CLO_SET)
2241 txn->flags |= TX_CON_CLO_SET;
2242 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2243 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2244 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2245 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2246
2247 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
2248 return;
2249
2250 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
2251 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2252 hdr_val = "Connection: close";
2253 hdr_len = 17;
2254 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2255 hdr_val = "Proxy-Connection: close";
2256 hdr_len = 23;
2257 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2258 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2259 }
2260
2261 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
2262 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2263 hdr_val = "Connection: keep-alive";
2264 hdr_len = 22;
2265 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2266 hdr_val = "Proxy-Connection: keep-alive";
2267 hdr_len = 28;
2268 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2269 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2270 }
2271 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2272}
2273
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2274/* Parse the chunk size at msg->next. Once done, caller should adjust ->next to
2275 * point to the first byte of data after the chunk size, so that we know we can
2276 * forward exactly msg->next bytes. msg->sol contains the exact number of bytes
2277 * forming the chunk size. That way it is always possible to differentiate
2278 * between the start of the body and the start of the data. Return the number
2279 * of byte parsed on success, 0 when some data is missing, <0 on error. Note:
2280 * this function is designed to parse wrapped CRLF at the end of the buffer.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2281 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2282static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2283{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2284 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2285 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2286 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2287 const char *end = buf->data + buf->size;
2288 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2289 unsigned int chunk = 0;
2290
2291 /* The chunk size is in the following form, though we are only
2292 * interested in the size and CRLF :
2293 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
2294 */
2295 while (1) {
2296 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2297 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2298 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2299 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2300 if (c < 0) /* not a hex digit anymore */
2301 break;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2302 if (unlikely(++ptr >= end))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2303 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]2304 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2305 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2306 chunk = (chunk << 4) + c;
2307 }
2308
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2309 /* empty size not allowed */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2310 if (unlikely(ptr == ptr_old))
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2311 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2312
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]2313 while (HTTP_IS_SPHT(*ptr)) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2314 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2315 ptr = buf->data;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2316 if (unlikely(ptr == stop))
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2317 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2318 }
2319
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2320 /* Up to there, we know that at least one byte is present at *ptr. Check
2321 * for the end of chunk size.
2322 */
2323 while (1) {
2324 if (likely(HTTP_IS_CRLF(*ptr))) {
2325 /* we now have a CR or an LF at ptr */
2326 if (likely(*ptr == '\r')) {
2327 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2328 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2329 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2330 return 0;
2331 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2332
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2333 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2334 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2335 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2336 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2337 /* done */
2338 break;
2339 }
2340 else if (*ptr == ';') {
2341 /* chunk extension, ends at next CRLF */
2342 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2343 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2344 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2345 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2346
2347 while (!HTTP_IS_CRLF(*ptr)) {
2348 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2349 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2350 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2351 return 0;
2352 }
2353 /* we have a CRLF now, loop above */
2354 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2355 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2356 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2357 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2358 }
2359
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2360 /* OK we found our CRLF and now <ptr> points to the next byte, which may
2361 * or may not be present. We save the number of bytes parsed into
2362 * msg->sol.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2363 */
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2364 msg->sol = ptr - ptr_old;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2365 if (unlikely(ptr < ptr_old))
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2366 msg->sol += buf->size;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2367 msg->chunk_len = chunk;
2368 msg->body_len += chunk;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2369 return msg->sol;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2370 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2371 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2372 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2373}
2374
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2375/* This function skips trailers in the buffer associated with HTTP message
2376 * <msg>. The first visited position is msg->next. If the end of the trailers is
2377 * found, the function returns >0. So, the caller can automatically schedul it
2378 * to be forwarded, and switch msg->msg_state to HTTP_MSG_DONE. If not enough
2379 * data are available, the function does not change anything except maybe
2380 * msg->sol if it could parse some lines, and returns zero. If a parse error
2381 * is encountered, the function returns < 0 and does not change anything except
2382 * maybe msg->sol. Note that the message must already be in HTTP_MSG_TRAILERS
2383 * state before calling this function, which implies that all non-trailers data
2384 * have already been scheduled for forwarding, and that msg->next exactly
2385 * matches the length of trailers already parsed and not forwarded. It is also
2386 * important to note that this function is designed to be able to parse wrapped
2387 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2388 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2389static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2390{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2391 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2392
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2393 /* we have msg->next which points to next line. Look for CRLF. But
2394 * first, we reset msg->sol */
2395 msg->sol = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2396 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2397 const char *p1 = NULL, *p2 = NULL;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2398 const char *start = b_ptr(buf, msg->next + msg->sol);
2399 const char *stop = bi_end(buf);
2400 const char *ptr = start;
2401 int bytes = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2402
2403 /* scan current line and stop at LF or CRLF */
2404 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2405 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2406 return 0;
2407
2408 if (*ptr == '\n') {
2409 if (!p1)
2410 p1 = ptr;
2411 p2 = ptr;
2412 break;
2413 }
2414
2415 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2416 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2417 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2418 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2419 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2420 p1 = ptr;
2421 }
2422
2423 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2424 if (ptr >= buf->data + buf->size)
2425 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2426 }
2427
2428 /* after LF; point to beginning of next line */
2429 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2430 if (p2 >= buf->data + buf->size)
2431 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2432
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2433 bytes = p2 - start;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2434 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2435 bytes += buf->size;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2436 msg->sol += bytes;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2437
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2438 /* LF/CRLF at beginning of line => end of trailers at p2.
2439 * Everything was scheduled for forwarding, there's nothing left
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2440 * from this message. */
2441 if (p1 == start)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2442 return 1;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2443
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2444 /* OK, next line then */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2445 }
2446}
2447
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2448/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF or
2449 * a possible LF alone at the end of a chunk. The caller should adjust msg->next
2450 * in order to include this part into the next forwarding phase. Note that the
2451 * caller must ensure that ->p points to the first byte to parse. It returns
2452 * the number of bytes parsed on success, so the caller can set msg_state to
2453 * HTTP_MSG_CHUNK_SIZE. If not enough data are available, the function does not
2454 * change anything and returns zero. If a parse error is encountered, the
2455 * function returns < 0. Note: this function is designed to parse wrapped CRLF
2456 * at the end of the buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2457 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2458static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2459{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2460 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2461 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2462 int bytes;
2463
2464 /* NB: we'll check data availabilty at the end. It's not a
2465 * problem because whatever we match first will be checked
2466 * against the correct length.
2467 */
2468 bytes = 1;
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2469 ptr = b_ptr(buf, msg->next);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2470 if (*ptr == '\r') {
2471 bytes++;
2472 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2473 if (ptr >= buf->data + buf->size)
2474 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2475 }
2476
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2477 if (msg->next + bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2478 return 0;
2479
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2480 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2481 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2482 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2483 }
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2484 return bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2485}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2486
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2487/* Parses a qvalue and returns it multipled by 1000, from 0 to 1000. If the
2488 * value is larger than 1000, it is bound to 1000. The parser consumes up to
2489 * 1 digit, one dot and 3 digits and stops on the first invalid character.
2490 * Unparsable qvalues return 1000 as "q=1.000".
2491 */
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2492int parse_qvalue(const char *qvalue, const char **end)
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2493{
2494 int q = 1000;
2495
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2496 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2497 goto out;
2498 q = (*qvalue++ - '0') * 1000;
2499
2500 if (*qvalue++ != '.')
2501 goto out;
2502
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2503 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2504 goto out;
2505 q += (*qvalue++ - '0') * 100;
2506
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2507 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2508 goto out;
2509 q += (*qvalue++ - '0') * 10;
2510
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2511 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2512 goto out;
2513 q += (*qvalue++ - '0') * 1;
2514 out:
2515 if (q > 1000)
2516 q = 1000;
Willy Tarreau38b3aa52014-04-22 23:32:05 +0200[diff] [blame]2517 if (end)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2518 *end = qvalue;
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2519 return q;
2520}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2521
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2522void http_adjust_conn_mode(struct stream *s, struct http_txn *txn, struct http_msg *msg)
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2523{
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]2524 struct proxy *fe = strm_fe(s);
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2525 int tmp = TX_CON_WANT_KAL;
2526
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2527 if (!((fe->options2|s->be->options2) & PR_O2_FAKE_KA)) {
2528 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2529 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN)
2530 tmp = TX_CON_WANT_TUN;
2531
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2532 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2533 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2534 tmp = TX_CON_WANT_TUN;
2535 }
2536
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2537 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2538 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL) {
2539 /* option httpclose + server_close => forceclose */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2540 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2541 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2542 tmp = TX_CON_WANT_CLO;
2543 else
2544 tmp = TX_CON_WANT_SCL;
2545 }
2546
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2547 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2548 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL)
2549 tmp = TX_CON_WANT_CLO;
2550
2551 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
2552 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
2553
2554 if (!(txn->flags & TX_HDR_CONN_PRS) &&
2555 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) {
2556 /* parse the Connection header and possibly clean it */
2557 int to_del = 0;
2558 if ((msg->flags & HTTP_MSGF_VER_11) ||
2559 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2560 !((fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2561 to_del |= 2; /* remove "keep-alive" */
2562 if (!(msg->flags & HTTP_MSGF_VER_11))
2563 to_del |= 1; /* remove "close" */
2564 http_parse_connection_header(txn, msg, to_del);
2565 }
2566
2567 /* check if client or config asks for explicit close in KAL/SCL */
2568 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
2569 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
2570 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
2571 (!(msg->flags & HTTP_MSGF_VER_11) && !(txn->flags & TX_HDR_CONN_KAL)) || /* no "connection: k-a" in 1.0 */
2572 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2573 fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2574 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
2575}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2576
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2577/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2578 * processing can continue on next analysers, or zero if it either needs more
2579 * data or wants to immediately abort the request (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2580 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req.analysers
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2581 * when it has nothing left to do, and may remove any analyser when it wants to
2582 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2583 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2584int http_wait_for_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2585{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2586 /*
2587 * We will parse the partial (or complete) lines.
2588 * We will check the request syntax, and also join multi-line
2589 * headers. An index of all the lines will be elaborated while
2590 * parsing.
2591 *
2592 * For the parsing, we use a 28 states FSM.
2593 *
2594 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2595 * req->buf->p = beginning of request
2596 * req->buf->p + msg->eoh = end of processed headers / start of current one
2597 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2598 * msg->eol = end of current header or line (LF or CRLF)
2599 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2600 *
2601 * At end of parsing, we may perform a capture of the error (if any), and
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2602 * we will set a few fields (txn->meth, sn->flags/SF_REDIRECTABLE).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2603 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2604 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2605 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2606
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2607 int cur_idx;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2608 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]2609 struct http_txn *txn = s->txn;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2610 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2611 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2612
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2613 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2614 now_ms, __FUNCTION__,
2615 s,
2616 req,
2617 req->rex, req->wex,
2618 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2619 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2620 req->analysers);
2621
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2622 /* we're speaking HTTP here, so let's speak HTTP to the client */
2623 s->srv_error = http_return_srv_error;
2624
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2625 /* There's a protected area at the end of the buffer for rewriting
2626 * purposes. We don't want to start to parse the request if the
2627 * protected area is affected, because we may have to move processed
2628 * data later, which is much more complicated.
2629 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2630 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Thierry FOURNIER / OZON.IO4cac3592016-07-28 17:19:45 +0200[diff] [blame]2631
2632 /* This point is executed when some data is avalaible for analysis,
2633 * so we log the end of the idle time. */
2634 if (s->logs.t_idle == -1)
2635 s->logs.t_idle = tv_ms_elapsed(&s->logs.tv_accept, &now) - s->logs.t_handshake;
2636
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2637 if (txn->flags & TX_NOT_FIRST) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]2638 if (unlikely(!channel_is_rewritable(req))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2639 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2640 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2641 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2642 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2643 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]2644 req->flags |= CF_WAKE_WRITE;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2645 return 0;
2646 }
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2647 if (unlikely(bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2648 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite))
2649 buffer_slow_realign(req->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2650 }
2651
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2652 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2653 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2654 }
2655
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2656 /* 1: we might have to print this header in debug mode */
2657 if (unlikely((global.mode & MODE_DEBUG) &&
2658 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]2659 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2660 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2661
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2662 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2663 /* this is a bit complex : in case of error on the request line,
2664 * we know that rq.l is still zero, so we display only the part
2665 * up to the end of the line (truncated by debug_hdr).
2666 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2667 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2668 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2669
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2670 sol += hdr_idx_first_pos(&txn->hdr_idx);
2671 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2672
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2673 while (cur_idx) {
2674 eol = sol + txn->hdr_idx.v[cur_idx].len;
2675 debug_hdr("clihdr", s, sol, eol);
2676 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2677 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2678 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2679 }
2680
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2681
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2682 /*
2683 * Now we quickly check if we have found a full valid request.
2684 * If not so, we check the FD and buffer states before leaving.
2685 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2686 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2687 * requests are checked first. When waiting for a second request
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2688 * on a keep-alive stream, if we encounter and error, close, t/o,
2689 * we note the error in the stream flags but don't set any state.
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2690 * Since the error will be noted there, it will not be counted by
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2691 * process_stream() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2692 * Last, we may increase some tracked counters' http request errors on
2693 * the cases that are deliberately the client's fault. For instance,
2694 * a timeout or connection reset is not counted as an error. However
2695 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2696 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2697
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2698 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2699 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2700 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2701 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2702 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2703 stream_inc_http_req_ctr(s);
2704 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2705 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2706 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2707 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2708
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2709 /* 1: Since we are in header mode, if there's no space
2710 * left for headers, we won't be able to free more
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2711 * later, so the stream will never terminate. We
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2712 * must terminate it now.
2713 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2714 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2715 /* FIXME: check if URI is set and return Status
2716 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2717 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2718 stream_inc_http_req_ctr(s);
2719 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2720 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2721 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2722 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2723 goto return_bad_req;
2724 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2725
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2726 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2727 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2728 if (!(s->flags & SF_ERR_MASK))
2729 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2730
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2731 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2732 goto failed_keep_alive;
2733
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2734 if (sess->fe->options & PR_O_IGNORE_PRB)
2735 goto failed_keep_alive;
2736
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2737 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2738 if (msg->err_pos >= 0) {
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2739 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->err_state, sess->fe);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2740 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2741 }
2742
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2743 txn->status = 400;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2744 msg->err_state = msg->msg_state;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2745 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2746 http_reply_and_close(s, txn->status, NULL);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]2747 req->analysers &= AN_REQ_FLT_END;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2748 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2749 proxy_inc_fe_req_ctr(sess->fe);
2750 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2751 if (sess->listener->counters)
2752 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2753
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2754 if (!(s->flags & SF_FINST_MASK))
2755 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2756 return 0;
2757 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2758
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2759 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2760 else if (req->flags & CF_READ_TIMEOUT || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2761 if (!(s->flags & SF_ERR_MASK))
2762 s->flags |= SF_ERR_CLITO;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2763
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2764 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2765 goto failed_keep_alive;
2766
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2767 if (sess->fe->options & PR_O_IGNORE_PRB)
2768 goto failed_keep_alive;
2769
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2770 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2771 if (msg->err_pos >= 0) {
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2772 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->err_state, sess->fe);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2773 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2774 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2775 txn->status = 408;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2776 msg->err_state = msg->msg_state;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2777 msg->msg_state = HTTP_MSG_ERROR;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]2778 http_reply_and_close(s, txn->status, http_error_message(s));
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]2779 req->analysers &= AN_REQ_FLT_END;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2780
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2781 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2782 proxy_inc_fe_req_ctr(sess->fe);
2783 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2784 if (sess->listener->counters)
2785 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2786
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2787 if (!(s->flags & SF_FINST_MASK))
2788 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2789 return 0;
2790 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2791
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2792 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2793 else if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2794 if (!(s->flags & SF_ERR_MASK))
2795 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2796
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2797 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2798 goto failed_keep_alive;
2799
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2800 if (sess->fe->options & PR_O_IGNORE_PRB)
2801 goto failed_keep_alive;
2802
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2803 if (msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2804 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->err_state, sess->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2805 txn->status = 400;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2806 msg->err_state = msg->msg_state;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2807 msg->msg_state = HTTP_MSG_ERROR;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]2808 http_reply_and_close(s, txn->status, http_error_message(s));
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]2809 req->analysers &= AN_REQ_FLT_END;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2810 stream_inc_http_err_ctr(s);
2811 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2812 proxy_inc_fe_req_ctr(sess->fe);
2813 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2814 if (sess->listener->counters)
2815 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2816
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2817 if (!(s->flags & SF_FINST_MASK))
2818 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2819 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2820 }
2821
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2822 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2823 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2824 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2825#ifdef TCP_QUICKACK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2826 if (sess->listener->options & LI_O_NOQUICKACK && req->buf->i &&
2827 objt_conn(sess->origin) && conn_ctrl_ready(__objt_conn(sess->origin))) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2828 /* We need more data, we have to re-enable quick-ack in case we
2829 * previously disabled it, otherwise we might cause the client
2830 * to delay next data.
2831 */
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2832 setsockopt(__objt_conn(sess->origin)->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2833 }
2834#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2835
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2836 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2837 /* If the client starts to talk, let's fall back to
2838 * request timeout processing.
2839 */
2840 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2841 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2842 }
2843
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2844 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2845 if (!tick_isset(req->analyse_exp)) {
2846 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2847 (txn->flags & TX_WAIT_NEXT_RQ) &&
2848 tick_isset(s->be->timeout.httpka))
2849 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2850 else
2851 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2852 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2853
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2854 /* we're not ready yet */
2855 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2856
2857 failed_keep_alive:
2858 /* Here we process low-level errors for keep-alive requests. In
2859 * short, if the request is not the first one and it experiences
2860 * a timeout, read error or shutdown, we just silently close so
2861 * that the client can try again.
2862 */
2863 txn->status = 0;
2864 msg->msg_state = HTTP_MSG_RQBEFORE;
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]2865 req->analysers &= AN_REQ_FLT_END;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2866 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]2867 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2868 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2869 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2870 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2871 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2872
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2873 /* OK now we have a complete HTTP request with indexed headers. Let's
2874 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2875 * later. At this point, we have the last CRLF at req->buf->data + msg->eoh.
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]2876 * If the request is in HTTP/0.9 form, the rule is still true, and eoh
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2877 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2878 * byte after the last LF. msg->sov points to the first byte of data.
2879 * msg->eol cannot be trusted because it may have been left uninitialized
2880 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2881 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2882
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2883 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2884 proxy_inc_fe_req_ctr(sess->fe); /* one more valid request for this FE */
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2885
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2886 if (txn->flags & TX_WAIT_NEXT_RQ) {
2887 /* kill the pending keep-alive timeout */
2888 txn->flags &= ~TX_WAIT_NEXT_RQ;
2889 req->analyse_exp = TICK_ETERNITY;
2890 }
2891
2892
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2893 /* Maybe we found in invalid header name while we were configured not
2894 * to block on that, so we have to capture it now.
2895 */
2896 if (unlikely(msg->err_pos >= 0))
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2897 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->err_state, sess->fe);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2898
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2899 /*
2900 * 1: identify the method
2901 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2902 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2903
2904 /* we can make use of server redirect on GET and HEAD */
2905 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2906 s->flags |= SF_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2907
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2908 /*
2909 * 2: check if the URI matches the monitor_uri.
2910 * We have to do this for every request which gets in, because
2911 * the monitor-uri is defined by the frontend.
2912 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2913 if (unlikely((sess->fe->monitor_uri_len != 0) &&
2914 (sess->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2915 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2916 sess->fe->monitor_uri,
2917 sess->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2918 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2919 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2920 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2921 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2922
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2923 s->flags |= SF_MONITOR;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2924 sess->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2925
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2926 /* Check if we want to fail this monitor request or not */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2927 list_for_each_entry(cond, &sess->fe->mon_fail_cond, list) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]2928 int ret = acl_exec_cond(cond, sess->fe, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2929
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2930 ret = acl_pass(ret);
2931 if (cond->pol == ACL_COND_UNLESS)
2932 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2933
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2934 if (ret) {
2935 /* we fail this request, let's return 503 service unavail */
2936 txn->status = 503;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]2937 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2938 if (!(s->flags & SF_ERR_MASK))
2939 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2940 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2941 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2942 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2943
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2944 /* nothing to fail, let's reply normaly */
2945 txn->status = 200;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]2946 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2947 if (!(s->flags & SF_ERR_MASK))
2948 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2949 goto return_prx_cond;
2950 }
2951
2952 /*
2953 * 3: Maybe we have to copy the original REQURI for the logs ?
2954 * Note: we cannot log anymore if the request has been
2955 * classified as invalid.
2956 */
2957 if (unlikely(s->logs.logwait & LW_REQ)) {
2958 /* we have a complete HTTP request that we must log */
2959 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2960 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2961
Stéphane Cottin23e9e932017-05-18 08:58:41 +0200[diff] [blame]2962 if (urilen >= global.tune.requri_len )
2963 urilen = global.tune.requri_len - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2964 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2965 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2966
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2967 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2968 s->do_log(s);
2969 } else {
2970 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2971 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2972 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2973
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]2974 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
2975 * exactly one digit "." one digit. This check may be disabled using
2976 * option accept-invalid-http-request.
2977 */
2978 if (!(sess->fe->options2 & PR_O2_REQBUG_OK)) {
2979 if (msg->sl.rq.v_l != 8) {
2980 msg->err_pos = msg->sl.rq.v;
2981 goto return_bad_req;
2982 }
2983
2984 if (req->buf->p[msg->sl.rq.v + 4] != '/' ||
2985 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 5]) ||
2986 req->buf->p[msg->sl.rq.v + 6] != '.' ||
2987 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 7])) {
2988 msg->err_pos = msg->sl.rq.v + 4;
2989 goto return_bad_req;
2990 }
2991 }
Willy Tarreau13317662015-05-01 13:47:08 +0200[diff] [blame]2992 else {
2993 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
2994 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
2995 goto return_bad_req;
2996 }
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]2997
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2998 /* ... and check if the request is HTTP/1.1 or above */
2999 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3000 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
3001 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
3002 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3003 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3004
3005 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]3006 txn->flags &= ~(TX_HDR_CONN_PRS | TX_HDR_CONN_CLO | TX_HDR_CONN_KAL | TX_HDR_CONN_UPG);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3007
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3008 /* if the frontend has "option http-use-proxy-header", we'll check if
3009 * we have what looks like a proxied connection instead of a connection,
3010 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
3011 * Note that this is *not* RFC-compliant, however browsers and proxies
3012 * happen to do that despite being non-standard :-(
3013 * We consider that a request not beginning with either '/' or '*' is
3014 * a proxied connection, which covers both "scheme://location" and
3015 * CONNECT ip:port.
3016 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3017 if ((sess->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3018 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3019 txn->flags |= TX_USE_PX_CONN;
3020
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3021 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3022 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3023
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3024 /* 5: we may need to capture headers */
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]3025 if (unlikely((s->logs.logwait & LW_REQHDR) && s->req_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3026 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]3027 s->req_cap, sess->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3028
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3029 /* 6: determine the transfer-length according to RFC2616 #4.4, updated
3030 * by RFC7230#3.3.3 :
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3031 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3032 * The length of a message body is determined by one of the following
3033 * (in order of precedence):
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3034 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3035 * 1. Any response to a HEAD request and any response with a 1xx
3036 * (Informational), 204 (No Content), or 304 (Not Modified) status
3037 * code is always terminated by the first empty line after the
3038 * header fields, regardless of the header fields present in the
3039 * message, and thus cannot contain a message body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3040 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3041 * 2. Any 2xx (Successful) response to a CONNECT request implies that
3042 * the connection will become a tunnel immediately after the empty
3043 * line that concludes the header fields. A client MUST ignore any
3044 * Content-Length or Transfer-Encoding header fields received in
3045 * such a message.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3046 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3047 * 3. If a Transfer-Encoding header field is present and the chunked
3048 * transfer coding (Section 4.1) is the final encoding, the message
3049 * body length is determined by reading and decoding the chunked
3050 * data until the transfer coding indicates the data is complete.
3051 *
3052 * If a Transfer-Encoding header field is present in a response and
3053 * the chunked transfer coding is not the final encoding, the
3054 * message body length is determined by reading the connection until
3055 * it is closed by the server. If a Transfer-Encoding header field
3056 * is present in a request and the chunked transfer coding is not
3057 * the final encoding, the message body length cannot be determined
3058 * reliably; the server MUST respond with the 400 (Bad Request)
3059 * status code and then close the connection.
3060 *
3061 * If a message is received with both a Transfer-Encoding and a
3062 * Content-Length header field, the Transfer-Encoding overrides the
3063 * Content-Length. Such a message might indicate an attempt to
3064 * perform request smuggling (Section 9.5) or response splitting
3065 * (Section 9.4) and ought to be handled as an error. A sender MUST
3066 * remove the received Content-Length field prior to forwarding such
3067 * a message downstream.
3068 *
3069 * 4. If a message is received without Transfer-Encoding and with
3070 * either multiple Content-Length header fields having differing
3071 * field-values or a single Content-Length header field having an
3072 * invalid value, then the message framing is invalid and the
3073 * recipient MUST treat it as an unrecoverable error. If this is a
3074 * request message, the server MUST respond with a 400 (Bad Request)
3075 * status code and then close the connection. If this is a response
3076 * message received by a proxy, the proxy MUST close the connection
3077 * to the server, discard the received response, and send a 502 (Bad
3078 * Gateway) response to the client. If this is a response message
3079 * received by a user agent, the user agent MUST close the
3080 * connection to the server and discard the received response.
3081 *
3082 * 5. If a valid Content-Length header field is present without
3083 * Transfer-Encoding, its decimal value defines the expected message
3084 * body length in octets. If the sender closes the connection or
3085 * the recipient times out before the indicated number of octets are
3086 * received, the recipient MUST consider the message to be
3087 * incomplete and close the connection.
3088 *
3089 * 6. If this is a request message and none of the above are true, then
3090 * the message body length is zero (no message body is present).
3091 *
3092 * 7. Otherwise, this is a response message without a declared message
3093 * body length, so the message body length is determined by the
3094 * number of octets received prior to the server closing the
3095 * connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3096 */
3097
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3098 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3099 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]3100 while (http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3101 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Christopher Fauletbe821b92017-03-30 11:21:53 +0200[diff] [blame]3102 msg->flags |= HTTP_MSGF_TE_CHNK;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3103 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]3104 /* chunked not last, return badreq */
3105 goto return_bad_req;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3106 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3107 }
3108
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]3109 /* Chunked requests must have their content-length removed */
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3110 ctx.idx = 0;
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]3111 if (msg->flags & HTTP_MSGF_TE_CHNK) {
3112 while (http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx))
3113 http_remove_header2(msg, &txn->hdr_idx, &ctx);
3114 }
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]3115 else while (http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3116 signed long long cl;
3117
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3118 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3119 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3120 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3121 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3122
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3123 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3124 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3125 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3126 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3127
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3128 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3129 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3130 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3131 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3132
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3133 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3134 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3135 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3136 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3137
Christopher Fauletbe821b92017-03-30 11:21:53 +0200[diff] [blame]3138 msg->flags |= HTTP_MSGF_CNT_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3139 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3140 }
3141
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]3142 /* even bodyless requests have a known length */
3143 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3144
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]3145 /* Until set to anything else, the connection mode is set as Keep-Alive. It will
3146 * only change if both the request and the config reference something else.
3147 * Option httpclose by itself sets tunnel mode where headers are mangled.
3148 * However, if another mode is set, it will affect it (eg: server-close/
3149 * keep-alive + httpclose = close). Note that we avoid to redo the same work
3150 * if FE and BE have the same settings (common). The method consists in
3151 * checking if options changed between the two calls (implying that either
3152 * one is non-null, or one of them is non-null and we are there for the first
3153 * time.
3154 */
3155 if (!(txn->flags & TX_HDR_CONN_PRS) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3156 ((sess->fe->options & PR_O_HTTP_MODE) != (s->be->options & PR_O_HTTP_MODE)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]3157 http_adjust_conn_mode(s, txn, msg);
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]3158
Willy Tarreau9fbe18e2015-05-01 22:42:08 +0200[diff] [blame]3159 /* we may have to wait for the request's body */
3160 if ((s->be->options & PR_O_WREQ_BODY) &&
3161 (msg->body_len || (msg->flags & HTTP_MSGF_TE_CHNK)))
3162 req->analysers |= AN_REQ_HTTP_BODY;
3163
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3164 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3165 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3166 req->analyse_exp = TICK_ETERNITY;
3167 return 1;
3168
3169 return_bad_req:
3170 /* We centralize bad requests processing here */
3171 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3172 /* we detected a parsing error. We want to archive this request
3173 * in the dedicated proxy area for later troubleshooting.
3174 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]3175 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->err_state, sess->fe);
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3176 }
3177
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]3178 txn->req.err_state = txn->req.msg_state;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3179 txn->req.msg_state = HTTP_MSG_ERROR;
3180 txn->status = 400;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]3181 http_reply_and_close(s, txn->status, http_error_message(s));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3182
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3183 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]3184 if (sess->listener->counters)
3185 sess->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3186
3187 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]3188 if (!(s->flags & SF_ERR_MASK))
3189 s->flags |= SF_ERR_PRXCOND;
3190 if (!(s->flags & SF_FINST_MASK))
3191 s->flags |= SF_FINST_R;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3192
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]3193 req->analysers &= AN_REQ_FLT_END;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3194 req->analyse_exp = TICK_ETERNITY;
3195 return 0;
3196}
3197
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]3198
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3199/* This function prepares an applet to handle the stats. It can deal with the
3200 * "100-continue" expectation, check that admin rules are met for POST requests,
3201 * and program a response message if something was unexpected. It cannot fail
3202 * and always relies on the stats applet to complete the job. It does not touch
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3203 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3204 * s->target which is supposed to already point to the stats applet. The caller
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3205 * is expected to have already assigned an appctx to the stream.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3206 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3207int http_handle_stats(struct stream *s, struct channel *req)
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3208{
3209 struct stats_admin_rule *stats_admin_rule;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]3210 struct stream_interface *si = &s->si[1];
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3211 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3212 struct http_txn *txn = s->txn;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3213 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3214 struct uri_auth *uri_auth = s->be->uri_auth;
3215 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3216 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3217
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3218 appctx = si_appctx(si);
3219 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
3220 appctx->st1 = appctx->st2 = 0;
3221 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
3222 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3223 if ((msg->flags & HTTP_MSGF_VER_11) && (s->txn->meth != HTTP_METH_HEAD))
Willy Tarreauaf3cf702014-04-22 22:19:53 +0200[diff] [blame]3224 appctx->ctx.stats.flags |= STAT_CHUNKED;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3225
3226 uri = msg->chn->buf->p + msg->sl.rq.u;
3227 lookup = uri + uri_auth->uri_len;
3228
3229 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
3230 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3231 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3232 break;
3233 }
3234 }
3235
3236 if (uri_auth->refresh) {
3237 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
3238 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3239 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3240 break;
3241 }
3242 }
3243 }
3244
3245 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
3246 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3247 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3248 break;
3249 }
3250 }
3251
Willy Tarreau1e62df92016-01-11 18:57:53 +0100[diff] [blame]3252 for (h = lookup; h <= uri + msg->sl.rq.u_l - 6; h++) {
3253 if (memcmp(h, ";typed", 6) == 0) {
3254 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
3255 appctx->ctx.stats.flags |= STAT_FMT_TYPED;
3256 break;
3257 }
3258 }
3259
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3260 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3261 if (memcmp(h, ";st=", 4) == 0) {
3262 int i;
3263 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3264 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3265 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
3266 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3267 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3268 break;
3269 }
3270 }
3271 break;
3272 }
3273 }
3274
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3275 appctx->ctx.stats.scope_str = 0;
3276 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3277 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3278 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
3279 int itx = 0;
3280 const char *h2;
3281 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
3282 const char *err;
3283
3284 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
3285 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3286 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3287 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
3288 itx++;
3289 h++;
3290 }
3291
3292 if (itx > STAT_SCOPE_TXT_MAXLEN)
3293 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3294 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3295
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3296 /* scope_txt = search query, appctx->ctx.stats.scope_len is always <= STAT_SCOPE_TXT_MAXLEN */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3297 memcpy(scope_txt, h2, itx);
3298 scope_txt[itx] = '\0';
3299 err = invalid_char(scope_txt);
3300 if (err) {
3301 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3302 appctx->ctx.stats.scope_str = 0;
3303 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3304 }
3305 break;
3306 }
3307 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3308
3309 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3310 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3311 int ret = 1;
3312
3313 if (stats_admin_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3314 ret = acl_exec_cond(stats_admin_rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3315 ret = acl_pass(ret);
3316 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3317 ret = !ret;
3318 }
3319
3320 if (ret) {
3321 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3322 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3323 break;
3324 }
3325 }
3326
3327 /* Was the status page requested with a POST ? */
Willy Tarreaub8cdf522015-05-29 01:09:15 +0200[diff] [blame]3328 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3329 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreaucfe7fdd2014-04-26 22:08:32 +0200[diff] [blame]3330 /* we'll need the request body, possibly after sending 100-continue */
Willy Tarreaub8cdf522015-05-29 01:09:15 +0200[diff] [blame]3331 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE)
3332 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3333 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3334 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3335 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3336 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
3337 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]3338 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3339 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3340 else {
3341 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3342 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3343 }
3344
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3345 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3346 return 1;
3347}
3348
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3349/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
3350 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
3351 */
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3352void inet_set_tos(int fd, const struct sockaddr_storage *from, int tos)
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3353{
3354#ifdef IP_TOS
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3355 if (from->ss_family == AF_INET)
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3356 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3357#endif
3358#ifdef IPV6_TCLASS
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3359 if (from->ss_family == AF_INET6) {
3360 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)from)->sin6_addr))
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3361 /* v4-mapped addresses need IP_TOS */
3362 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3363 else
3364 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
3365 }
3366#endif
3367}
3368
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3369int http_transform_header_str(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3370 const char* name, unsigned int name_len,
3371 const char *str, struct my_regex *re,
3372 int action)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3373{
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3374 struct hdr_ctx ctx;
3375 char *buf = msg->chn->buf->p;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3376 struct hdr_idx *idx = &s->txn->hdr_idx;
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3377 int (*http_find_hdr_func)(const char *name, int len, char *sol,
3378 struct hdr_idx *idx, struct hdr_ctx *ctx);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3379 struct chunk *output = get_trash_chunk();
3380
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3381 ctx.idx = 0;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3382
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3383 /* Choose the header browsing function. */
3384 switch (action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3385 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3386 http_find_hdr_func = http_find_header2;
3387 break;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3388 case ACT_HTTP_REPLACE_HDR:
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3389 http_find_hdr_func = http_find_full_header2;
3390 break;
3391 default: /* impossible */
3392 return -1;
3393 }
3394
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3395 while (http_find_hdr_func(name, name_len, buf, idx, &ctx)) {
3396 struct hdr_idx_elem *hdr = idx->v + ctx.idx;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3397 int delta;
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3398 char *val = ctx.line + ctx.val;
3399 char* val_end = val + ctx.vlen;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3400
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3401 if (!regex_exec_match2(re, val, val_end-val, MAX_MATCH, pmatch, 0))
3402 continue;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3403
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3404 output->len = exp_replace(output->str, output->size, val, str, pmatch);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3405 if (output->len == -1)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3406 return -1;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3407
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3408 delta = buffer_replace2(msg->chn->buf, val, val_end, output->str, output->len);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3409
3410 hdr->len += delta;
3411 http_msg_move_end(msg, delta);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3412
3413 /* Adjust the length of the current value of the index. */
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3414 ctx.vlen += delta;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3415 }
3416
3417 return 0;
3418}
3419
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3420static int http_transform_header(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3421 const char* name, unsigned int name_len,
3422 struct list *fmt, struct my_regex *re,
3423 int action)
3424{
Christopher Faulet07a0fec2017-02-08 12:17:07 +0100[diff] [blame]3425 struct chunk *replace;
3426 int ret = -1;
3427
3428 replace = alloc_trash_chunk();
3429 if (!replace)
3430 goto leave;
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3431
3432 replace->len = build_logline(s, replace->str, replace->size, fmt);
3433 if (replace->len >= replace->size - 1)
Christopher Faulet07a0fec2017-02-08 12:17:07 +0100[diff] [blame]3434 goto leave;
3435
3436 ret = http_transform_header_str(s, msg, name, name_len, replace->str, re, action);
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3437
Christopher Faulet07a0fec2017-02-08 12:17:07 +0100[diff] [blame]3438 leave:
3439 free_trash_chunk(replace);
3440 return ret;
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3441}
3442
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3443/* Executes the http-request rules <rules> for stream <s>, proxy <px> and
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3444 * transaction <txn>. Returns the verdict of the first rule that prevents
3445 * further processing of the request (auth, deny, ...), and defaults to
3446 * HTTP_RULE_RES_STOP if it executed all rules or stopped on an allow, or
3447 * HTTP_RULE_RES_CONT if the last rule was reached. It may set the TX_CLTARPIT
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3448 * on txn->flags if it encounters a tarpit rule. If <deny_status> is not NULL
3449 * and a deny/tarpit rule is matched, it will be filled with this rule's deny
3450 * status.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3451 */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3452enum rule_result
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3453http_req_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s, int *deny_status)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3454{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3455 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3456 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3457 struct connection *cli_conn;
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]3458 struct act_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3459 struct hdr_ctx ctx;
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3460 const char *auth_realm;
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3461 int act_flags = 0;
Thierry Fournier4b788f72016-06-01 13:35:36 +0200[diff] [blame]3462 int len;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3463
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3464 /* If "the current_rule_list" match the executed rule list, we are in
3465 * resume condition. If a resume is needed it is always in the action
3466 * and never in the ACL or converters. In this case, we initialise the
3467 * current rule, and go to the action execution point.
3468 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3469 if (s->current_rule) {
3470 rule = s->current_rule;
3471 s->current_rule = NULL;
3472 if (s->current_rule_list == rules)
3473 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3474 }
3475 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3476
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3477 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3478
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3479 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3480 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3481 int ret;
3482
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3483 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3484 ret = acl_pass(ret);
3485
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3486 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3487 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3488
3489 if (!ret) /* condition not matched */
3490 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3491 }
3492
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3493 act_flags |= ACT_FLAG_FIRST;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3494resume_execution:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3495 switch (rule->action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3496 case ACT_ACTION_ALLOW:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3497 return HTTP_RULE_RES_STOP;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3498
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3499 case ACT_ACTION_DENY:
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3500 if (deny_status)
3501 *deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3502 return HTTP_RULE_RES_DENY;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3503
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3504 case ACT_HTTP_REQ_TARPIT:
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3505 txn->flags |= TX_CLTARPIT;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3506 if (deny_status)
3507 *deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3508 return HTTP_RULE_RES_DENY;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3509
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3510 case ACT_HTTP_REQ_AUTH:
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3511 /* Auth might be performed on regular http-req rules as well as on stats */
3512 auth_realm = rule->arg.auth.realm;
3513 if (!auth_realm) {
3514 if (px->uri_auth && rules == &px->uri_auth->http_req_rules)
3515 auth_realm = STATS_DEFAULT_REALM;
3516 else
3517 auth_realm = px->id;
3518 }
3519 /* send 401/407 depending on whether we use a proxy or not. We still
3520 * count one error, because normal browsing won't significantly
3521 * increase the counter but brute force attempts will.
3522 */
3523 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, auth_realm);
3524 txn->status = (txn->flags & TX_USE_PX_CONN) ? 407 : 401;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]3525 http_reply_and_close(s, txn->status, &trash);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3526 stream_inc_http_err_ctr(s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3527 return HTTP_RULE_RES_ABRT;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3528
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3529 case ACT_HTTP_REDIR:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3530 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3531 return HTTP_RULE_RES_BADREQ;
3532 return HTTP_RULE_RES_DONE;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3533
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3534 case ACT_HTTP_SET_NICE:
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3535 s->task->nice = rule->arg.nice;
3536 break;
3537
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3538 case ACT_HTTP_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3539 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3540 inet_set_tos(cli_conn->t.sock.fd, &cli_conn->addr.from, rule->arg.tos);
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3541 break;
3542
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3543 case ACT_HTTP_SET_MARK:
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3544#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3545 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3546 setsockopt(cli_conn->t.sock.fd, SOL_SOCKET, SO_MARK, &rule->arg.mark, sizeof(rule->arg.mark));
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3547#endif
3548 break;
3549
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3550 case ACT_HTTP_SET_LOGL:
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3551 s->logs.level = rule->arg.loglevel;
3552 break;
3553
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3554 case ACT_HTTP_REPLACE_HDR:
3555 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3556 if (http_transform_header(s, &txn->req, rule->arg.hdr_add.name,
3557 rule->arg.hdr_add.name_len,
3558 &rule->arg.hdr_add.fmt,
3559 &rule->arg.hdr_add.re, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3560 return HTTP_RULE_RES_BADREQ;
3561 break;
3562
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3563 case ACT_HTTP_DEL_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3564 ctx.idx = 0;
3565 /* remove all occurrences of the header */
3566 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3567 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3568 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3569 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3570 break;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3571
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3572 case ACT_HTTP_SET_HDR:
3573 case ACT_HTTP_ADD_HDR:
Thierry Fournier4b788f72016-06-01 13:35:36 +0200[diff] [blame]3574 /* The scope of the trash buffer must be limited to this function. The
3575 * build_logline() function can execute a lot of other function which
3576 * can use the trash buffer. So for limiting the scope of this global
3577 * buffer, we build first the header value using build_logline, and
3578 * after we store the header name.
3579 */
3580 len = rule->arg.hdr_add.name_len + 2,
3581 len += build_logline(s, trash.str + len, trash.size - len, &rule->arg.hdr_add.fmt);
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3582 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
Thierry Fournier4b788f72016-06-01 13:35:36 +0200[diff] [blame]3583 trash.str[rule->arg.hdr_add.name_len] = ':';
3584 trash.str[rule->arg.hdr_add.name_len + 1] = ' ';
3585 trash.len = len;
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3586
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3587 if (rule->action == ACT_HTTP_SET_HDR) {
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3588 /* remove all occurrences of the header */
3589 ctx.idx = 0;
3590 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3591 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3592 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
3593 }
3594 }
3595
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3596 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3597 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3598
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3599 case ACT_HTTP_DEL_ACL:
3600 case ACT_HTTP_DEL_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3601 struct pat_ref *ref;
3602 char *key;
3603 int len;
3604
3605 /* collect reference */
3606 ref = pat_ref_lookup(rule->arg.map.ref);
3607 if (!ref)
3608 continue;
3609
3610 /* collect key */
3611 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3612 key = trash.str;
3613 key[len] = '\0';
3614
3615 /* perform update */
3616 /* returned code: 1=ok, 0=ko */
3617 pat_ref_delete(ref, key);
3618
3619 break;
3620 }
3621
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3622 case ACT_HTTP_ADD_ACL: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3623 struct pat_ref *ref;
3624 char *key;
3625 struct chunk *trash_key;
3626 int len;
3627
3628 trash_key = get_trash_chunk();
3629
3630 /* collect reference */
3631 ref = pat_ref_lookup(rule->arg.map.ref);
3632 if (!ref)
3633 continue;
3634
3635 /* collect key */
3636 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3637 key = trash_key->str;
3638 key[len] = '\0';
3639
3640 /* perform update */
3641 /* add entry only if it does not already exist */
3642 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3643 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3644
3645 break;
3646 }
3647
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3648 case ACT_HTTP_SET_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3649 struct pat_ref *ref;
3650 char *key, *value;
3651 struct chunk *trash_key, *trash_value;
3652 int len;
3653
3654 trash_key = get_trash_chunk();
3655 trash_value = get_trash_chunk();
3656
3657 /* collect reference */
3658 ref = pat_ref_lookup(rule->arg.map.ref);
3659 if (!ref)
3660 continue;
3661
3662 /* collect key */
3663 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3664 key = trash_key->str;
3665 key[len] = '\0';
3666
3667 /* collect value */
3668 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3669 value = trash_value->str;
3670 value[len] = '\0';
3671
3672 /* perform update */
3673 if (pat_ref_find_elt(ref, key) != NULL)
3674 /* update entry if it exists */
3675 pat_ref_set(ref, key, value, NULL);
3676 else
3677 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3678 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3679
3680 break;
3681 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3682
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3683 case ACT_CUSTOM:
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3684 if ((px->options & PR_O_ABRT_CLOSE) && (s->req.flags & (CF_SHUTR|CF_READ_NULL|CF_READ_ERROR)))
3685 act_flags |= ACT_FLAG_FINAL;
Willy Tarreau39458682015-09-27 10:33:15 +0200[diff] [blame]3686
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3687 switch (rule->action_ptr(rule, px, s->sess, s, act_flags)) {
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3688 case ACT_RET_ERR:
3689 case ACT_RET_CONT:
3690 break;
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3691 case ACT_RET_STOP:
3692 return HTTP_RULE_RES_DONE;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3693 case ACT_RET_YIELD:
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3694 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3695 return HTTP_RULE_RES_YIELD;
3696 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3697 break;
3698
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3699 case ACT_ACTION_TRK_SC0 ... ACT_ACTION_TRK_SCMAX:
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3700 /* Note: only the first valid tracking parameter of each
3701 * applies.
3702 */
3703
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3704 if (stkctr_entry(&s->stkctr[http_trk_idx(rule->action)]) == NULL) {
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3705 struct stktable *t;
3706 struct stksess *ts;
3707 struct stktable_key *key;
3708 void *ptr;
3709
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]3710 t = rule->arg.trk_ctr.table.t;
3711 key = stktable_fetch_key(t, s->be, sess, s, SMP_OPT_DIR_REQ | SMP_OPT_FINAL, rule->arg.trk_ctr.expr, NULL);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3712
3713 if (key && (ts = stktable_get_entry(t, key))) {
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3714 stream_track_stkctr(&s->stkctr[http_trk_idx(rule->action)], t, ts);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3715
3716 /* let's count a new HTTP request as it's the first time we do it */
3717 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT);
3718 if (ptr)
3719 stktable_data_cast(ptr, http_req_cnt)++;
3720
3721 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE);
3722 if (ptr)
3723 update_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
3724 t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1);
3725
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3726 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_CONTENT);
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3727 if (sess->fe != s->be)
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3728 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_BACKEND);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3729 }
3730 }
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3731 break;
3732
Thierry FOURNIER22e49012015-08-05 19:13:48 +0200[diff] [blame]3733 /* other flags exists, but normaly, they never be matched. */
3734 default:
3735 break;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3736 }
3737 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3738
3739 /* we reached the end of the rules, nothing to report */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3740 return HTTP_RULE_RES_CONT;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3741}
3742
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3743
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3744/* Executes the http-response rules <rules> for stream <s> and proxy <px>. It
3745 * returns one of 5 possible statuses: HTTP_RULE_RES_CONT, HTTP_RULE_RES_STOP,
3746 * HTTP_RULE_RES_DONE, HTTP_RULE_RES_YIELD, or HTTP_RULE_RES_BADREQ. If *CONT
3747 * is returned, the process can continue the evaluation of next rule list. If
3748 * *STOP or *DONE is returned, the process must stop the evaluation. If *BADREQ
3749 * is returned, it means the operation could not be processed and a server error
3750 * must be returned. It may set the TX_SVDENY on txn->flags if it encounters a
3751 * deny rule. If *YIELD is returned, the caller must call again the function
3752 * with the same context.
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3753 */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3754static enum rule_result
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3755http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s)
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3756{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3757 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3758 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3759 struct connection *cli_conn;
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]3760 struct act_rule *rule;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3761 struct hdr_ctx ctx;
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3762 int act_flags = 0;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3763
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3764 /* If "the current_rule_list" match the executed rule list, we are in
3765 * resume condition. If a resume is needed it is always in the action
3766 * and never in the ACL or converters. In this case, we initialise the
3767 * current rule, and go to the action execution point.
3768 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3769 if (s->current_rule) {
3770 rule = s->current_rule;
3771 s->current_rule = NULL;
3772 if (s->current_rule_list == rules)
3773 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3774 }
3775 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3776
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3777 list_for_each_entry(rule, rules, list) {
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3778
3779 /* check optional condition */
3780 if (rule->cond) {
3781 int ret;
3782
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3783 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3784 ret = acl_pass(ret);
3785
3786 if (rule->cond->pol == ACL_COND_UNLESS)
3787 ret = !ret;
3788
3789 if (!ret) /* condition not matched */
3790 continue;
3791 }
3792
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3793 act_flags |= ACT_FLAG_FIRST;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3794resume_execution:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3795 switch (rule->action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3796 case ACT_ACTION_ALLOW:
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3797 return HTTP_RULE_RES_STOP; /* "allow" rules are OK */
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3798
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3799 case ACT_ACTION_DENY:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3800 txn->flags |= TX_SVDENY;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3801 return HTTP_RULE_RES_STOP;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3802
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3803 case ACT_HTTP_SET_NICE:
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3804 s->task->nice = rule->arg.nice;
3805 break;
3806
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3807 case ACT_HTTP_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3808 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3809 inet_set_tos(cli_conn->t.sock.fd, &cli_conn->addr.from, rule->arg.tos);
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3810 break;
3811
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3812 case ACT_HTTP_SET_MARK:
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3813#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3814 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3815 setsockopt(cli_conn->t.sock.fd, SOL_SOCKET, SO_MARK, &rule->arg.mark, sizeof(rule->arg.mark));
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3816#endif
3817 break;
3818
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3819 case ACT_HTTP_SET_LOGL:
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3820 s->logs.level = rule->arg.loglevel;
3821 break;
3822
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3823 case ACT_HTTP_REPLACE_HDR:
3824 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3825 if (http_transform_header(s, &txn->rsp, rule->arg.hdr_add.name,
3826 rule->arg.hdr_add.name_len,
3827 &rule->arg.hdr_add.fmt,
3828 &rule->arg.hdr_add.re, rule->action))
Christopher Fauletcdade942017-02-08 12:41:31 +0100[diff] [blame]3829 return HTTP_RULE_RES_BADREQ;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3830 break;
3831
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3832 case ACT_HTTP_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3833 ctx.idx = 0;
3834 /* remove all occurrences of the header */
3835 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3836 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3837 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3838 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3839 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3840
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3841 case ACT_HTTP_SET_HDR:
3842 case ACT_HTTP_ADD_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3843 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3844 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3845 trash.len = rule->arg.hdr_add.name_len;
3846 trash.str[trash.len++] = ':';
3847 trash.str[trash.len++] = ' ';
3848 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3849
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3850 if (rule->action == ACT_HTTP_SET_HDR) {
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3851 /* remove all occurrences of the header */
3852 ctx.idx = 0;
3853 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3854 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3855 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3856 }
3857 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3858 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3859 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3860
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3861 case ACT_HTTP_DEL_ACL:
3862 case ACT_HTTP_DEL_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3863 struct pat_ref *ref;
3864 char *key;
3865 int len;
3866
3867 /* collect reference */
3868 ref = pat_ref_lookup(rule->arg.map.ref);
3869 if (!ref)
3870 continue;
3871
3872 /* collect key */
3873 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3874 key = trash.str;
3875 key[len] = '\0';
3876
3877 /* perform update */
3878 /* returned code: 1=ok, 0=ko */
3879 pat_ref_delete(ref, key);
3880
3881 break;
3882 }
3883
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3884 case ACT_HTTP_ADD_ACL: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3885 struct pat_ref *ref;
3886 char *key;
3887 struct chunk *trash_key;
3888 int len;
3889
3890 trash_key = get_trash_chunk();
3891
3892 /* collect reference */
3893 ref = pat_ref_lookup(rule->arg.map.ref);
3894 if (!ref)
3895 continue;
3896
3897 /* collect key */
3898 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3899 key = trash_key->str;
3900 key[len] = '\0';
3901
3902 /* perform update */
3903 /* check if the entry already exists */
3904 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3905 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3906
3907 break;
3908 }
3909
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3910 case ACT_HTTP_SET_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3911 struct pat_ref *ref;
3912 char *key, *value;
3913 struct chunk *trash_key, *trash_value;
3914 int len;
3915
3916 trash_key = get_trash_chunk();
3917 trash_value = get_trash_chunk();
3918
3919 /* collect reference */
3920 ref = pat_ref_lookup(rule->arg.map.ref);
3921 if (!ref)
3922 continue;
3923
3924 /* collect key */
3925 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3926 key = trash_key->str;
3927 key[len] = '\0';
3928
3929 /* collect value */
3930 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3931 value = trash_value->str;
3932 value[len] = '\0';
3933
3934 /* perform update */
3935 if (pat_ref_find_elt(ref, key) != NULL)
3936 /* update entry if it exists */
3937 pat_ref_set(ref, key, value, NULL);
3938 else
3939 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3940 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3941
3942 break;
3943 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3944
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3945 case ACT_HTTP_REDIR:
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3946 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3947 return HTTP_RULE_RES_BADREQ;
3948 return HTTP_RULE_RES_DONE;
3949
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3950 case ACT_ACTION_TRK_SC0 ... ACT_ACTION_TRK_SCMAX:
3951 /* Note: only the first valid tracking parameter of each
3952 * applies.
3953 */
3954
3955 if (stkctr_entry(&s->stkctr[http_trk_idx(rule->action)]) == NULL) {
3956 struct stktable *t;
3957 struct stksess *ts;
3958 struct stktable_key *key;
3959 void *ptr;
3960
3961 t = rule->arg.trk_ctr.table.t;
3962 key = stktable_fetch_key(t, s->be, sess, s, SMP_OPT_DIR_RES | SMP_OPT_FINAL, rule->arg.trk_ctr.expr, NULL);
3963
3964 if (key && (ts = stktable_get_entry(t, key))) {
3965 stream_track_stkctr(&s->stkctr[http_trk_idx(rule->action)], t, ts);
3966
3967 /* let's count a new HTTP request as it's the first time we do it */
3968 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT);
3969 if (ptr)
3970 stktable_data_cast(ptr, http_req_cnt)++;
3971
3972 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE);
3973 if (ptr)
3974 update_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
3975 t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1);
3976
3977 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_CONTENT);
3978 if (sess->fe != s->be)
3979 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_BACKEND);
3980
3981 /* When the client triggers a 4xx from the server, it's most often due
3982 * to a missing object or permission. These events should be tracked
3983 * because if they happen often, it may indicate a brute force or a
3984 * vulnerability scan. Normally this is done when receiving the response
3985 * but here we're tracking after this ought to have been done so we have
3986 * to do it on purpose.
3987 */
Willy Tarreau3146a4c2016-07-26 15:22:33 +0200[diff] [blame]3988 if ((unsigned)(txn->status - 400) < 100) {
3989 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_ERR_CNT);
3990 if (ptr)
3991 stktable_data_cast(ptr, http_err_cnt)++;
3992
3993 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_ERR_RATE);
3994 if (ptr)
3995 update_freq_ctr_period(&stktable_data_cast(ptr, http_err_rate),
3996 t->data_arg[STKTABLE_DT_HTTP_ERR_RATE].u, 1);
3997 }
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3998 }
3999 }
4000 break;
4001
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]4002 case ACT_CUSTOM:
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]4003 if ((px->options & PR_O_ABRT_CLOSE) && (s->req.flags & (CF_SHUTR|CF_READ_NULL|CF_READ_ERROR)))
4004 act_flags |= ACT_FLAG_FINAL;
Willy Tarreau39458682015-09-27 10:33:15 +0200[diff] [blame]4005
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]4006 switch (rule->action_ptr(rule, px, s->sess, s, act_flags)) {
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]4007 case ACT_RET_ERR:
4008 case ACT_RET_CONT:
4009 break;
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]4010 case ACT_RET_STOP:
4011 return HTTP_RULE_RES_STOP;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]4012 case ACT_RET_YIELD:
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]4013 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4014 return HTTP_RULE_RES_YIELD;
4015 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]4016 break;
4017
Thierry FOURNIER22e49012015-08-05 19:13:48 +0200[diff] [blame]4018 /* other flags exists, but normaly, they never be matched. */
4019 default:
4020 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]4021 }
4022 }
4023
4024 /* we reached the end of the rules, nothing to report */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]4025 return HTTP_RULE_RES_CONT;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]4026}
4027
4028
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4029/* Perform an HTTP redirect based on the information in <rule>. The function
4030 * returns non-zero on success, or zero in case of a, irrecoverable error such
4031 * as too large a request to build a valid response.
4032 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4033static int http_apply_redirect_rule(struct redirect_rule *rule, struct stream *s, struct http_txn *txn)
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4034{
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4035 struct http_msg *req = &txn->req;
4036 struct http_msg *res = &txn->rsp;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4037 const char *msg_fmt;
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4038 struct chunk *chunk;
4039 int ret = 0;
4040
4041 chunk = alloc_trash_chunk();
4042 if (!chunk)
4043 goto leave;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4044
4045 /* build redirect message */
4046 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]4047 case 308:
4048 msg_fmt = HTTP_308;
4049 break;
4050 case 307:
4051 msg_fmt = HTTP_307;
4052 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4053 case 303:
4054 msg_fmt = HTTP_303;
4055 break;
4056 case 301:
4057 msg_fmt = HTTP_301;
4058 break;
4059 case 302:
4060 default:
4061 msg_fmt = HTTP_302;
4062 break;
4063 }
4064
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4065 if (unlikely(!chunk_strcpy(chunk, msg_fmt)))
4066 goto leave;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4067
4068 switch(rule->type) {
4069 case REDIRECT_TYPE_SCHEME: {
4070 const char *path;
4071 const char *host;
4072 struct hdr_ctx ctx;
4073 int pathlen;
4074 int hostlen;
4075
4076 host = "";
4077 hostlen = 0;
4078 ctx.idx = 0;
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4079 if (http_find_header2("Host", 4, req->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4080 host = ctx.line + ctx.val;
4081 hostlen = ctx.vlen;
4082 }
4083
4084 path = http_get_path(txn);
4085 /* build message using path */
4086 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4087 pathlen = req->sl.rq.u_l + (req->chn->buf->p + req->sl.rq.u) - path;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4088 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
4089 int qs = 0;
4090 while (qs < pathlen) {
4091 if (path[qs] == '?') {
4092 pathlen = qs;
4093 break;
4094 }
4095 qs++;
4096 }
4097 }
4098 } else {
4099 path = "/";
4100 pathlen = 1;
4101 }
4102
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4103 if (rule->rdr_str) { /* this is an old "redirect" rule */
4104 /* check if we can add scheme + "://" + host + path */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4105 if (chunk->len + rule->rdr_len + 3 + hostlen + pathlen > chunk->size - 4)
4106 goto leave;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4107
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4108 /* add scheme */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4109 memcpy(chunk->str + chunk->len, rule->rdr_str, rule->rdr_len);
4110 chunk->len += rule->rdr_len;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4111 }
4112 else {
4113 /* add scheme with executing log format */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4114 chunk->len += build_logline(s, chunk->str + chunk->len, chunk->size - chunk->len, &rule->rdr_fmt);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4115
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4116 /* check if we can add scheme + "://" + host + path */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4117 if (chunk->len + 3 + hostlen + pathlen > chunk->size - 4)
4118 goto leave;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4119 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4120 /* add "://" */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4121 memcpy(chunk->str + chunk->len, "://", 3);
4122 chunk->len += 3;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4123
4124 /* add host */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4125 memcpy(chunk->str + chunk->len, host, hostlen);
4126 chunk->len += hostlen;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4127
4128 /* add path */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4129 memcpy(chunk->str + chunk->len, path, pathlen);
4130 chunk->len += pathlen;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4131
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4132 /* append a slash at the end of the location if needed and missing */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4133 if (chunk->len && chunk->str[chunk->len - 1] != '/' &&
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4134 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4135 if (chunk->len > chunk->size - 5)
4136 goto leave;
4137 chunk->str[chunk->len] = '/';
4138 chunk->len++;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4139 }
4140
4141 break;
4142 }
4143 case REDIRECT_TYPE_PREFIX: {
4144 const char *path;
4145 int pathlen;
4146
4147 path = http_get_path(txn);
4148 /* build message using path */
4149 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4150 pathlen = req->sl.rq.u_l + (req->chn->buf->p + req->sl.rq.u) - path;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4151 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
4152 int qs = 0;
4153 while (qs < pathlen) {
4154 if (path[qs] == '?') {
4155 pathlen = qs;
4156 break;
4157 }
4158 qs++;
4159 }
4160 }
4161 } else {
4162 path = "/";
4163 pathlen = 1;
4164 }
4165
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4166 if (rule->rdr_str) { /* this is an old "redirect" rule */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4167 if (chunk->len + rule->rdr_len + pathlen > chunk->size - 4)
4168 goto leave;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4169
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4170 /* add prefix. Note that if prefix == "/", we don't want to
4171 * add anything, otherwise it makes it hard for the user to
4172 * configure a self-redirection.
4173 */
4174 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4175 memcpy(chunk->str + chunk->len, rule->rdr_str, rule->rdr_len);
4176 chunk->len += rule->rdr_len;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4177 }
4178 }
4179 else {
4180 /* add prefix with executing log format */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4181 chunk->len += build_logline(s, chunk->str + chunk->len, chunk->size - chunk->len, &rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4182
4183 /* Check length */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4184 if (chunk->len + pathlen > chunk->size - 4)
4185 goto leave;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4186 }
4187
4188 /* add path */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4189 memcpy(chunk->str + chunk->len, path, pathlen);
4190 chunk->len += pathlen;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4191
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4192 /* append a slash at the end of the location if needed and missing */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4193 if (chunk->len && chunk->str[chunk->len - 1] != '/' &&
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4194 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4195 if (chunk->len > chunk->size - 5)
4196 goto leave;
4197 chunk->str[chunk->len] = '/';
4198 chunk->len++;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4199 }
4200
4201 break;
4202 }
4203 case REDIRECT_TYPE_LOCATION:
4204 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4205 if (rule->rdr_str) { /* this is an old "redirect" rule */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4206 if (chunk->len + rule->rdr_len > chunk->size - 4)
4207 goto leave;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4208
4209 /* add location */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4210 memcpy(chunk->str + chunk->len, rule->rdr_str, rule->rdr_len);
4211 chunk->len += rule->rdr_len;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4212 }
4213 else {
4214 /* add location with executing log format */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4215 chunk->len += build_logline(s, chunk->str + chunk->len, chunk->size - chunk->len, &rule->rdr_fmt);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4216
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4217 /* Check left length */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4218 if (chunk->len > chunk->size - 4)
4219 goto leave;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4220 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4221 break;
4222 }
4223
4224 if (rule->cookie_len) {
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4225 memcpy(chunk->str + chunk->len, "\r\nSet-Cookie: ", 14);
4226 chunk->len += 14;
4227 memcpy(chunk->str + chunk->len, rule->cookie_str, rule->cookie_len);
4228 chunk->len += rule->cookie_len;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4229 }
4230
Willy Tarreau19b14122017-02-28 09:48:11 +0100[diff] [blame]4231 /* add end of headers and the keep-alive/close status. */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4232 txn->status = rule->code;
4233 /* let's log the request time */
4234 s->logs.tv_request = now;
4235
Christopher Fauletbe821b92017-03-30 11:21:53 +0200[diff] [blame]4236 if (((!(req->flags & HTTP_MSGF_TE_CHNK) && !req->body_len) || (req->msg_state == HTTP_MSG_DONE)) &&
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4237 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
4238 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
4239 /* keep-alive possible */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4240 if (!(req->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4241 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4242 memcpy(chunk->str + chunk->len, "\r\nProxy-Connection: keep-alive", 30);
4243 chunk->len += 30;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4244 } else {
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4245 memcpy(chunk->str + chunk->len, "\r\nConnection: keep-alive", 24);
4246 chunk->len += 24;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4247 }
4248 }
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4249 memcpy(chunk->str + chunk->len, "\r\n\r\n", 4);
4250 chunk->len += 4;
4251 FLT_STRM_CB(s, flt_http_reply(s, txn->status, chunk));
4252 bo_inject(res->chn, chunk->str, chunk->len);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4253 /* "eat" the request */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4254 bi_fast_delete(req->chn->buf, req->sov);
4255 req->next -= req->sov;
4256 req->sov = 0;
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4257 s->req.analysers = AN_REQ_HTTP_XFER_BODY | (s->req.analysers & AN_REQ_FLT_END);
Christopher Faulet014e39c2017-03-10 13:52:30 +0100[diff] [blame]4258 s->res.analysers = AN_RES_HTTP_XFER_BODY | (s->res.analysers & AN_RES_FLT_END);
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4259 req->msg_state = HTTP_MSG_CLOSED;
4260 res->msg_state = HTTP_MSG_DONE;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]4261 /* Trim any possible response */
4262 res->chn->buf->i = 0;
4263 res->next = res->sov = 0;
Christopher Faulet9f724ed2017-04-20 14:16:13 +0200[diff] [blame]4264 /* If not already done, don't perform any connection establishment */
4265 channel_dont_connect(req->chn);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4266 } else {
4267 /* keep-alive not possible */
4268 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4269 memcpy(chunk->str + chunk->len, "\r\nProxy-Connection: close\r\n\r\n", 29);
4270 chunk->len += 29;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4271 } else {
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4272 memcpy(chunk->str + chunk->len, "\r\nConnection: close\r\n\r\n", 23);
4273 chunk->len += 23;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4274 }
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4275 http_reply_and_close(s, txn->status, chunk);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4276 req->chn->analysers &= AN_REQ_FLT_END;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4277 }
4278
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4279 if (!(s->flags & SF_ERR_MASK))
4280 s->flags |= SF_ERR_LOCAL;
4281 if (!(s->flags & SF_FINST_MASK))
4282 s->flags |= SF_FINST_R;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4283
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4284 ret = 1;
4285 leave:
4286 free_trash_chunk(chunk);
4287 return ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4288}
4289
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4290/* This stream analyser runs all HTTP request processing which is common to
4291 * frontends and backends, which means blocking ACLs, filters, connection-close,
4292 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4293 * It returns 1 if the processing can continue on next analysers, or zero if it
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4294 * either needs more data or wants to immediately abort the request (eg: deny,
4295 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4296 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4297int http_process_req_common(struct stream *s, struct channel *req, int an_bit, struct proxy *px)
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4298{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4299 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4300 struct http_txn *txn = s->txn;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4301 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4302 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]4303 struct cond_wordlist *wl;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4304 enum rule_result verdict;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4305 int deny_status = HTTP_ERR_403;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4306
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4307 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4308 /* we need more data */
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4309 goto return_prx_yield;
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4310 }
4311
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4312 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4313 now_ms, __FUNCTION__,
4314 s,
4315 req,
4316 req->rex, req->wex,
4317 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4318 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4319 req->analysers);
4320
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4321 /* just in case we have some per-backend tracking */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4322 stream_inc_be_http_req_ctr(s);
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4323
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4324 /* evaluate http-request rules */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4325 if (!LIST_ISEMPTY(&px->http_req_rules)) {
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4326 verdict = http_req_get_intercept_rule(px, &px->http_req_rules, s, &deny_status);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]4327
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4328 switch (verdict) {
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4329 case HTTP_RULE_RES_YIELD: /* some data miss, call the function later. */
4330 goto return_prx_yield;
4331
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4332 case HTTP_RULE_RES_CONT:
4333 case HTTP_RULE_RES_STOP: /* nothing to do */
4334 break;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4335
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4336 case HTTP_RULE_RES_DENY: /* deny or tarpit */
4337 if (txn->flags & TX_CLTARPIT)
4338 goto tarpit;
4339 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4340
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4341 case HTTP_RULE_RES_ABRT: /* abort request, response already sent. Eg: auth */
4342 goto return_prx_cond;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4343
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4344 case HTTP_RULE_RES_DONE: /* OK, but terminate request processing (eg: redirect) */
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4345 goto done;
4346
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4347 case HTTP_RULE_RES_BADREQ: /* failed with a bad request */
4348 goto return_bad_req;
4349 }
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4350 }
4351
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4352 /* OK at this stage, we know that the request was accepted according to
4353 * the http-request rules, we can check for the stats. Note that the
4354 * URI is detected *before* the req* rules in order not to be affected
4355 * by a possible reqrep, while they are processed *after* so that a
4356 * reqdeny can still block them. This clearly needs to change in 1.6!
4357 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4358 if (stats_check_uri(&s->si[1], txn, px)) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4359 s->target = &http_stats_applet.obj_type;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4360 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target)))) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4361 txn->status = 500;
4362 s->logs.tv_request = now;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]4363 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]4364
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4365 if (!(s->flags & SF_ERR_MASK))
4366 s->flags |= SF_ERR_RESOURCE;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4367 goto return_prx_cond;
4368 }
4369
4370 /* parse the whole stats request and extract the relevant information */
4371 http_handle_stats(s, req);
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4372 verdict = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s, &deny_status);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4373 /* not all actions implemented: deny, allow, auth */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4374
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4375 if (verdict == HTTP_RULE_RES_DENY) /* stats http-request deny */
4376 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4377
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4378 if (verdict == HTTP_RULE_RES_ABRT) /* stats auth / stats http-request auth */
4379 goto return_prx_cond;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]4380 }
4381
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4382 /* evaluate the req* rules except reqadd */
4383 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]4384 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4385 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4386
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4387 if (txn->flags & TX_CLDENY)
4388 goto deny;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]4389
Jarno Huuskonen800d1762017-03-06 14:56:36 +0200[diff] [blame]4390 if (txn->flags & TX_CLTARPIT) {
4391 deny_status = HTTP_ERR_500;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4392 goto tarpit;
Jarno Huuskonen800d1762017-03-06 14:56:36 +0200[diff] [blame]4393 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4394 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4395
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4396 /* add request headers from the rule sets in the same order */
4397 list_for_each_entry(wl, &px->req_add, list) {
4398 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4399 int ret = acl_exec_cond(wl->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4400 ret = acl_pass(ret);
4401 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
4402 ret = !ret;
4403 if (!ret)
4404 continue;
4405 }
4406
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4407 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4408 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]4409 }
4410
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4411
4412 /* Proceed with the stats now. */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]4413 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]4414 /* process the stats request now */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4415 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
4416 sess->fe->fe_counters.intercepted_req++;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4417
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4418 if (!(s->flags & SF_ERR_MASK)) // this is not really an error but it is
4419 s->flags |= SF_ERR_LOCAL; // to mark that it comes from the proxy
4420 if (!(s->flags & SF_FINST_MASK))
4421 s->flags |= SF_FINST_R;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4422
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4423 /* enable the minimally required analyzers to handle keep-alive and compression on the HTTP response */
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4424 req->analysers &= (AN_REQ_HTTP_BODY | AN_REQ_FLT_HTTP_HDRS | AN_REQ_FLT_END);
4425 req->analysers &= ~AN_REQ_FLT_XFER_DATA;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4426 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4427 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4428 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4429
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4430 /* check whether we have some ACLs set to redirect this request */
4431 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4432 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4433 int ret;
4434
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4435 ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4436 ret = acl_pass(ret);
4437 if (rule->cond->pol == ACL_COND_UNLESS)
4438 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4439 if (!ret)
4440 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4441 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4442 if (!http_apply_redirect_rule(rule, s, txn))
4443 goto return_bad_req;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4444 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4445 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4446
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4447 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
4448 * If this happens, then the data will not come immediately, so we must
4449 * send all what we have without waiting. Note that due to the small gain
4450 * in waiting for the body of the request, it's easier to simply put the
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4451 * CF_SEND_DONTWAIT flag any time. It's a one-shot flag so it will remove
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4452 * itself once used.
4453 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4454 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4455
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4456 done: /* done with this analyser, continue with next ones that the calling
4457 * points will have set, if any.
4458 */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4459 req->analyse_exp = TICK_ETERNITY;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4460 done_without_exp: /* done with this analyser, but dont reset the analyse_exp. */
4461 req->analysers &= ~an_bit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4462 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4463
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4464 tarpit:
4465 /* When a connection is tarpitted, we use the tarpit timeout,
4466 * which may be the same as the connect timeout if unspecified.
4467 * If unset, then set it to zero because we really want it to
4468 * eventually expire. We build the tarpit as an analyser.
4469 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4470 channel_erase(&s->req);
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4471
4472 /* wipe the request out so that we can drop the connection early
4473 * if the client closes first.
4474 */
4475 channel_dont_connect(req);
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]4476
4477 /* Allow cookie logging
4478 */
4479 if (s->be->cookie_name || sess->fe->capture_name)
4480 manage_client_side_cookies(s, req);
4481
Jarno Huuskonen800d1762017-03-06 14:56:36 +0200[diff] [blame]4482 txn->status = http_err_codes[deny_status];
4483
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4484 req->analysers &= AN_REQ_FLT_END; /* remove switching rules etc... */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4485 req->analysers |= AN_REQ_HTTP_TARPIT;
4486 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
4487 if (!req->analyse_exp)
4488 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4489 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4490 sess->fe->fe_counters.denied_req++;
4491 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4492 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4493 if (sess->listener->counters)
4494 sess->listener->counters->denied_req++;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4495 goto done_without_exp;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4496
4497 deny: /* this request was blocked (denied) */
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]4498
4499 /* Allow cookie logging
4500 */
4501 if (s->be->cookie_name || sess->fe->capture_name)
4502 manage_client_side_cookies(s, req);
4503
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4504 txn->flags |= TX_CLDENY;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4505 txn->status = http_err_codes[deny_status];
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4506 s->logs.tv_request = now;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]4507 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4508 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4509 sess->fe->fe_counters.denied_req++;
4510 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4511 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4512 if (sess->listener->counters)
4513 sess->listener->counters->denied_req++;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4514 goto return_prx_cond;
4515
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4516 return_bad_req:
4517 /* We centralize bad requests processing here */
4518 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
4519 /* we detected a parsing error. We want to archive this request
4520 * in the dedicated proxy area for later troubleshooting.
4521 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]4522 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->err_state, sess->fe);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4523 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4524
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]4525 txn->req.err_state = txn->req.msg_state;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4526 txn->req.msg_state = HTTP_MSG_ERROR;
4527 txn->status = 400;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]4528 http_reply_and_close(s, txn->status, http_error_message(s));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4529
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4530 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4531 if (sess->listener->counters)
4532 sess->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4533
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4534 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4535 if (!(s->flags & SF_ERR_MASK))
4536 s->flags |= SF_ERR_PRXCOND;
4537 if (!(s->flags & SF_FINST_MASK))
4538 s->flags |= SF_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]4539
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4540 req->analysers &= AN_REQ_FLT_END;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4541 req->analyse_exp = TICK_ETERNITY;
4542 return 0;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4543
4544 return_prx_yield:
4545 channel_dont_connect(req);
4546 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4547}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4548
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4549/* This function performs all the processing enabled for the current request.
4550 * It returns 1 if the processing can continue on next analysers, or zero if it
4551 * needs more data, encounters an error, or wants to immediately abort the
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4552 * request. It relies on buffers flags, and updates s->req.analysers.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4553 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4554int http_process_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4555{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4556 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4557 struct http_txn *txn = s->txn;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4558 struct http_msg *msg = &txn->req;
Willy Tarreauee335e62015-04-21 18:15:13 +0200[diff] [blame]4559 struct connection *cli_conn = objt_conn(strm_sess(s)->origin);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4560
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4561 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4562 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4563 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4564 return 0;
4565 }
4566
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4567 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4568 now_ms, __FUNCTION__,
4569 s,
4570 req,
4571 req->rex, req->wex,
4572 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4573 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4574 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4575
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4576 /*
4577 * Right now, we know that we have processed the entire headers
4578 * and that unwanted requests have been filtered out. We can do
4579 * whatever we want with the remaining request. Also, now we
4580 * may have separate values for ->fe, ->be.
4581 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4582
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4583 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4584 * If HTTP PROXY is set we simply get remote server address parsing
4585 * incoming request. Note that this requires that a connection is
4586 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4587 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4588 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SF_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4589 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4590 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4591
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]4592 /* Note that for now we don't reuse existing proxy connections */
Willy Tarreau973a5422015-08-05 21:47:23 +0200[diff] [blame]4593 if (unlikely((conn = si_alloc_conn(&s->si[1])) == NULL)) {
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]4594 txn->req.err_state = txn->req.msg_state;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4595 txn->req.msg_state = HTTP_MSG_ERROR;
4596 txn->status = 500;
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4597 req->analysers &= AN_REQ_FLT_END;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]4598 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4599
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4600 if (!(s->flags & SF_ERR_MASK))
4601 s->flags |= SF_ERR_RESOURCE;
4602 if (!(s->flags & SF_FINST_MASK))
4603 s->flags |= SF_FINST_R;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4604
4605 return 0;
4606 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4607
4608 path = http_get_path(txn);
4609 url2sa(req->buf->p + msg->sl.rq.u,
4610 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]4611 &conn->addr.to, NULL);
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4612 /* if the path was found, we have to remove everything between
4613 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
4614 * found, we need to replace from req->buf->p + msg->sl.rq.u for
4615 * u_l characters by a single "/".
4616 */
4617 if (path) {
4618 char *cur_ptr = req->buf->p;
4619 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4620 int delta;
4621
4622 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
4623 http_msg_move_end(&txn->req, delta);
4624 cur_end += delta;
4625 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4626 goto return_bad_req;
4627 }
4628 else {
4629 char *cur_ptr = req->buf->p;
4630 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4631 int delta;
4632
4633 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
4634 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
4635 http_msg_move_end(&txn->req, delta);
4636 cur_end += delta;
4637 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4638 goto return_bad_req;
4639 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4640 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4641
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4642 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4643 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4644 * Note that doing so might move headers in the request, but
4645 * the fields will stay coherent and the URI will not move.
4646 * This should only be performed in the backend.
4647 */
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]4648 if (s->be->cookie_name || sess->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4649 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]4650
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4651 /* add unique-id if "header-unique-id" is specified */
4652
Thierry Fournierf4011dd2016-03-29 17:23:51 +0200[diff] [blame]4653 if (!LIST_ISEMPTY(&sess->fe->format_unique_id) && !s->unique_id) {
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4654 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
4655 goto return_bad_req;
4656 s->unique_id[0] = '\0';
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4657 build_logline(s, s->unique_id, UNIQUEID_LEN, &sess->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4658 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4659
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4660 if (sess->fe->header_unique_id && s->unique_id) {
4661 chunk_printf(&trash, "%s: %s", sess->fe->header_unique_id, s->unique_id);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4662 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4663 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4664 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len) < 0))
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4665 goto return_bad_req;
4666 }
4667
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4668 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4669 * 9: add X-Forwarded-For if either the frontend or the backend
4670 * asks for it.
4671 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4672 if ((sess->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4673 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4674 if (!((sess->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
4675 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : sess->fe->fwdfor_hdr_name,
4676 s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_len : sess->fe->fwdfor_hdr_len,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4677 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4678 /* The header is set to be added only if none is present
4679 * and we found it, so don't do anything.
4680 */
4681 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4682 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4683 /* Add an X-Forwarded-For header unless the source IP is
4684 * in the 'except' network range.
4685 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4686 if ((!sess->fe->except_mask.s_addr ||
4687 (((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr & sess->fe->except_mask.s_addr)
4688 != sess->fe->except_net.s_addr) &&
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4689 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4690 (((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr & s->be->except_mask.s_addr)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4691 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4692 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4693 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4694 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4695
4696 /* Note: we rely on the backend to get the header name to be used for
4697 * x-forwarded-for, because the header is really meant for the backends.
4698 * However, if the backend did not specify any option, we have to rely
4699 * on the frontend's header name.
4700 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4701 if (s->be->fwdfor_hdr_len) {
4702 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4703 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4704 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4705 len = sess->fe->fwdfor_hdr_len;
4706 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4707 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4708 len += snprintf(trash.str + len, trash.size - len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
Willy Tarreauedcf6682008-11-30 23:15:34 +0100[diff] [blame]4709
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4710 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, len) < 0))
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4711 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4712 }
4713 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4714 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4715 /* FIXME: for the sake of completeness, we should also support
4716 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4717 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4718 int len;
4719 char pn[INET6_ADDRSTRLEN];
4720 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4721 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4722 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4723
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4724 /* Note: we rely on the backend to get the header name to be used for
4725 * x-forwarded-for, because the header is really meant for the backends.
4726 * However, if the backend did not specify any option, we have to rely
4727 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4728 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4729 if (s->be->fwdfor_hdr_len) {
4730 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4731 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4732 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4733 len = sess->fe->fwdfor_hdr_len;
4734 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4735 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4736 len += snprintf(trash.str + len, trash.size - len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4737
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4738 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, len) < 0))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4739 goto return_bad_req;
4740 }
4741 }
4742
4743 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4744 * 10: add X-Original-To if either the frontend or the backend
4745 * asks for it.
4746 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4747 if ((sess->fe->options | s->be->options) & PR_O_ORGTO) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4748
4749 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4750 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4751 /* Add an X-Original-To header unless the destination IP is
4752 * in the 'except' network range.
4753 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4754 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4755
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4756 if (cli_conn->addr.to.ss_family == AF_INET &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4757 ((!sess->fe->except_mask_to.s_addr ||
4758 (((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr.s_addr & sess->fe->except_mask_to.s_addr)
4759 != sess->fe->except_to.s_addr) &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4760 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4761 (((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr.s_addr & s->be->except_mask_to.s_addr)
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4762 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4763 int len;
4764 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4765 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4766
4767 /* Note: we rely on the backend to get the header name to be used for
4768 * x-original-to, because the header is really meant for the backends.
4769 * However, if the backend did not specify any option, we have to rely
4770 * on the frontend's header name.
4771 */
4772 if (s->be->orgto_hdr_len) {
4773 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4774 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4775 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4776 len = sess->fe->orgto_hdr_len;
4777 memcpy(trash.str, sess->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4778 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4779 len += snprintf(trash.str + len, trash.size - len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4780
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4781 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, len) < 0))
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4782 goto return_bad_req;
4783 }
4784 }
4785 }
4786
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4787 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
4788 * If an "Upgrade" token is found, the header is left untouched in order not to have
4789 * to deal with some servers bugs : some of them fail an Upgrade if anything but
4790 * "Upgrade" is present in the Connection header.
4791 */
4792 if (!(txn->flags & TX_HDR_CONN_UPG) &&
4793 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4794 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4795 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4796 unsigned int want_flags = 0;
4797
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4798 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4799 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4800 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4801 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4802 !((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4803 want_flags |= TX_CON_CLO_SET;
4804 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4805 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4806 ((sess->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4807 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4808 ((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4809 want_flags |= TX_CON_KAL_SET;
4810 }
4811
4812 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4813 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4814 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4815
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4816
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4817 /* If we have no server assigned yet and we're balancing on url_param
4818 * with a POST request, we may be interested in checking the body for
4819 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4820 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4821 if (!(s->flags & (SF_ASSIGNED|SF_DIRECT)) &&
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4822 s->txn->meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4823 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4824 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4825 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4826 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4827
Christopher Fauletbe821b92017-03-30 11:21:53 +0200[diff] [blame]4828 req->analysers &= ~AN_REQ_FLT_XFER_DATA;
4829 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4830#ifdef TCP_QUICKACK
Christopher Fauletbe821b92017-03-30 11:21:53 +0200[diff] [blame]4831 /* We expect some data from the client. Unless we know for sure
4832 * we already have a full request, we have to re-enable quick-ack
4833 * in case we previously disabled it, otherwise we might cause
4834 * the client to delay further data.
4835 */
4836 if ((sess->listener->options & LI_O_NOQUICKACK) &&
4837 cli_conn && conn_ctrl_ready(cli_conn) &&
4838 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
4839 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
4840 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4841#endif
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4842
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4843 /*************************************************************
4844 * OK, that's finished for the headers. We have done what we *
4845 * could. Let's switch to the DATA state. *
4846 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4847 req->analyse_exp = TICK_ETERNITY;
4848 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4849
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4850 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4851 /* OK let's go on with the BODY now */
4852 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4853
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4854 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4855 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4856 /* we detected a parsing error. We want to archive this request
4857 * in the dedicated proxy area for later troubleshooting.
4858 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]4859 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->err_state, sess->fe);
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4860 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4861
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]4862 txn->req.err_state = txn->req.msg_state;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4863 txn->req.msg_state = HTTP_MSG_ERROR;
4864 txn->status = 400;
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4865 req->analysers &= AN_REQ_FLT_END;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]4866 http_reply_and_close(s, txn->status, http_error_message(s));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4867
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4868 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4869 if (sess->listener->counters)
4870 sess->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4871
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4872 if (!(s->flags & SF_ERR_MASK))
4873 s->flags |= SF_ERR_PRXCOND;
4874 if (!(s->flags & SF_FINST_MASK))
4875 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4876 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4877}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4878
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4879/* This function is an analyser which processes the HTTP tarpit. It always
4880 * returns zero, at the beginning because it prevents any other processing
4881 * from occurring, and at the end because it terminates the request.
4882 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4883int http_process_tarpit(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4884{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4885 struct http_txn *txn = s->txn;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4886
4887 /* This connection is being tarpitted. The CLIENT side has
4888 * already set the connect expiration date to the right
4889 * timeout. We just have to check that the client is still
4890 * there and that the timeout has not expired.
4891 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4892 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4893 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4894 !tick_is_expired(req->analyse_exp, now_ms))
4895 return 0;
4896
4897 /* We will set the queue timer to the time spent, just for
4898 * logging purposes. We fake a 500 server error, so that the
4899 * attacker will not suspect his connection has been tarpitted.
4900 * It will not cause trouble to the logs because we can exclude
4901 * the tarpitted connections by filtering on the 'PT' status flags.
4902 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4903 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4904
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4905 if (!(req->flags & CF_READ_ERROR))
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]4906 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4907
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4908 req->analysers &= AN_REQ_FLT_END;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4909 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4910
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4911 if (!(s->flags & SF_ERR_MASK))
4912 s->flags |= SF_ERR_PRXCOND;
4913 if (!(s->flags & SF_FINST_MASK))
4914 s->flags |= SF_FINST_T;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4915 return 0;
4916}
4917
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4918/* This function is an analyser which waits for the HTTP request body. It waits
4919 * for either the buffer to be full, or the full advertised contents to have
4920 * reached the buffer. It must only be called after the standard HTTP request
4921 * processing has occurred, because it expects the request to be parsed and will
4922 * look for the Expect header. It may send a 100-Continue interim response. It
4923 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
4924 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
4925 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4926 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4927int http_wait_for_request_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4928{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4929 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4930 struct http_txn *txn = s->txn;
4931 struct http_msg *msg = &s->txn->req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4932
4933 /* We have to parse the HTTP request body to find any required data.
4934 * "balance url_param check_post" should have been the only way to get
4935 * into this. We were brought here after HTTP header analysis, so all
4936 * related structures are ready.
4937 */
4938
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4939 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
4940 /* This is the first call */
4941 if (msg->msg_state < HTTP_MSG_BODY)
4942 goto missing_data;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4943
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4944 if (msg->msg_state < HTTP_MSG_100_SENT) {
4945 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4946 * send an HTTP/1.1 100 Continue intermediate response.
4947 */
4948 if (msg->flags & HTTP_MSGF_VER_11) {
4949 struct hdr_ctx ctx;
4950 ctx.idx = 0;
4951 /* Expect is allowed in 1.1, look for it */
4952 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
4953 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4954 bo_inject(&s->res, http_100_chunk.str, http_100_chunk.len);
Thierry FOURNIER / OZON.IO43ad11d2016-12-12 15:19:58 +0100[diff] [blame]4955 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4956 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4957 }
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4958 msg->msg_state = HTTP_MSG_100_SENT;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4959 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4960
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4961 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4962 * req->buf->p still points to the beginning of the message. We
4963 * must save the body in msg->next because it survives buffer
4964 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4965 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4966 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4967
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4968 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4969 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4970 else
4971 msg->msg_state = HTTP_MSG_DATA;
4972 }
4973
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4974 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
4975 /* We're in content-length mode, we just have to wait for enough data. */
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4976 if (http_body_bytes(msg) < msg->body_len)
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4977 goto missing_data;
4978
4979 /* OK we have everything we need now */
4980 goto http_end;
4981 }
4982
4983 /* OK here we're parsing a chunked-encoded message */
4984
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4985 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4986 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4987 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4988 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4989 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4990 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4991
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4992 if (!ret)
4993 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4994 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4995 stream_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4996 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4997 }
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]4998 msg->next += ret;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4999 msg->msg_state = msg->chunk_len ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]5000 }
5001
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5002 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]5003 * We have the first data byte is in msg->sov + msg->sol. We're waiting
5004 * for at least a whole chunk or the whole content length bytes after
5005 * msg->sov + msg->sol.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]5006 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]5007 if (msg->msg_state == HTTP_MSG_TRAILERS)
5008 goto http_end;
5009
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]5010 if (http_body_bytes(msg) >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5011 goto http_end;
5012
5013 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]5014 /* we get here if we need to wait for more data. If the buffer is full,
5015 * we have the maximum we can expect.
5016 */
5017 if (buffer_full(req->buf, global.tune.maxrewrite))
5018 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]5019
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5020 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5021 txn->status = 408;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]5022 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5023
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5024 if (!(s->flags & SF_ERR_MASK))
5025 s->flags |= SF_ERR_CLITO;
5026 if (!(s->flags & SF_FINST_MASK))
5027 s->flags |= SF_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5028 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]5029 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5030
5031 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]5032 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]5033 /* Not enough data. We'll re-use the http-request
5034 * timeout here. Ideally, we should set the timeout
5035 * relative to the accept() date. We just set the
5036 * request timeout once at the beginning of the
5037 * request.
5038 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5039 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]5040 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]5041 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]5042 return 0;
5043 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5044
5045 http_end:
5046 /* The situation will not evolve, so let's give up on the analysis. */
5047 s->logs.tv_request = now; /* update the request timer to reflect full request */
5048 req->analysers &= ~an_bit;
5049 req->analyse_exp = TICK_ETERNITY;
5050 return 1;
5051
5052 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5053 txn->req.err_state = txn->req.msg_state;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5054 txn->req.msg_state = HTTP_MSG_ERROR;
5055 txn->status = 400;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]5056 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5057
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5058 if (!(s->flags & SF_ERR_MASK))
5059 s->flags |= SF_ERR_PRXCOND;
5060 if (!(s->flags & SF_FINST_MASK))
5061 s->flags |= SF_FINST_R;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5062
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5063 return_err_msg:
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5064 req->analysers &= AN_REQ_FLT_END;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5065 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5066 if (sess->listener->counters)
5067 sess->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5068 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]5069}
5070
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5071/* send a server's name with an outgoing request over an established connection.
5072 * Note: this function is designed to be called once the request has been scheduled
5073 * for being forwarded. This is the reason why it rewinds the buffer before
5074 * proceeding.
5075 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]5076int http_send_name_header(struct http_txn *txn, struct proxy* be, const char* srv_name) {
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5077
5078 struct hdr_ctx ctx;
5079
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5080 char *hdr_name = be->server_id_hdr_name;
5081 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]5082 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5083 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5084 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5085
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]5086 ctx.idx = 0;
5087
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]5088 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5089 if (old_o) {
5090 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5091 b_rew(chn->buf, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]5092 txn->req.next += old_o;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5093 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5094 }
5095
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5096 old_i = chn->buf->i;
5097 while (http_find_header2(hdr_name, hdr_name_len, txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5098 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5099 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5100 }
5101
5102 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5103 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5104 memcpy(hdr_val, hdr_name, hdr_name_len);
5105 hdr_val += hdr_name_len;
5106 *hdr_val++ = ':';
5107 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5108 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
5109 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, hdr_val - trash.str);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5110
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5111 if (old_o) {
5112 /* If this was a forwarded request, we must readjust the amount of
5113 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]5114 * variations. Note that the current state is >= HTTP_MSG_BODY,
5115 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5116 */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]5117 old_o += chn->buf->i - old_i;
5118 b_adv(chn->buf, old_o);
5119 txn->req.next -= old_o;
5120 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5121 }
5122
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5123 return 0;
5124}
5125
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5126/* Terminate current transaction and prepare a new one. This is very tricky
5127 * right now but it works.
5128 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5129void http_end_txn_clean_session(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5130{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5131 int prev_status = s->txn->status;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]5132 struct proxy *fe = strm_fe(s);
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]5133 struct proxy *be = s->be;
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5134 struct connection *srv_conn;
5135 struct server *srv;
Willy Tarreau449d74a2015-08-05 17:16:33 +0200[diff] [blame]5136 unsigned int prev_flags = s->txn->flags;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5137
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5138 /* FIXME: We need a more portable way of releasing a backend's and a
5139 * server's connections. We need a safer way to reinitialize buffer
5140 * flags. We also need a more accurate method for computing per-request
5141 * data.
5142 */
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5143 srv_conn = objt_conn(s->si[1].end);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5144
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5145 /* unless we're doing keep-alive, we want to quickly close the connection
5146 * to the server.
5147 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5148 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5149 !si_conn_ready(&s->si[1])) {
5150 s->si[1].flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
5151 si_shutr(&s->si[1]);
5152 si_shutw(&s->si[1]);
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5153 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5154
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5155 if (s->flags & SF_BE_ASSIGNED) {
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]5156 be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]5157 if (unlikely(s->srv_conn))
5158 sess_change_server(s, NULL);
5159 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5160
5161 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5162 stream_process_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5163
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5164 if (s->txn->status) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5165 int n;
5166
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5167 n = s->txn->status / 100;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5168 if (n < 1 || n > 5)
5169 n = 0;
5170
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5171 if (fe->mode == PR_MODE_HTTP) {
5172 fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5173 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5174 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]5175 (be->mode == PR_MODE_HTTP)) {
5176 be->be_counters.p.http.rsp[n]++;
5177 be->be_counters.p.http.cum_req++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5178 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5179 }
5180
5181 /* don't count other requests' data */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5182 s->logs.bytes_in -= s->req.buf->i;
5183 s->logs.bytes_out -= s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5184
5185 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5186 if (!LIST_ISEMPTY(&fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5187 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5188 (!(fe->options & PR_O_NULLNOLOG) || s->req.total)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5189 s->do_log(s);
5190 }
5191
Willy Tarreaud713bcc2014-06-25 15:36:04 +0200[diff] [blame]5192 /* stop tracking content-based counters */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5193 stream_stop_content_counters(s);
5194 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +0200[diff] [blame]5195
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5196 s->logs.accept_date = date; /* user-visible date for logging */
5197 s->logs.tv_accept = now; /* corrected date for internal use */
Thierry FOURNIER / OZON.IO4cac3592016-07-28 17:19:45 +0200[diff] [blame]5198 s->logs.t_handshake = 0; /* There are no handshake in keep alive connection. */
5199 s->logs.t_idle = -1;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5200 tv_zero(&s->logs.tv_request);
5201 s->logs.t_queue = -1;
5202 s->logs.t_connect = -1;
5203 s->logs.t_data = -1;
5204 s->logs.t_close = 0;
5205 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
5206 s->logs.srv_queue_size = 0; /* we will get this number soon */
5207
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5208 s->logs.bytes_in = s->req.total = s->req.buf->i;
5209 s->logs.bytes_out = s->res.total = s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5210
5211 if (s->pend_pos)
5212 pendconn_free(s->pend_pos);
5213
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5214 if (objt_server(s->target)) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5215 if (s->flags & SF_CURR_SESS) {
5216 s->flags &= ~SF_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5217 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5218 }
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]5219 if (may_dequeue_tasks(objt_server(s->target), be))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5220 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5221 }
5222
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5223 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5224
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5225 /* only release our endpoint if we don't intend to reuse the
5226 * connection.
5227 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5228 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5229 !si_conn_ready(&s->si[1])) {
5230 si_release_endpoint(&s->si[1]);
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5231 srv_conn = NULL;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5232 }
5233
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5234 s->si[1].state = s->si[1].prev_state = SI_ST_INI;
5235 s->si[1].err_type = SI_ET_NONE;
5236 s->si[1].conn_retries = 0; /* used for logging too */
5237 s->si[1].exp = TICK_ETERNITY;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5238 s->si[1].flags &= SI_FL_ISBACK | SI_FL_DONT_WAKE; /* we're in the context of process_stream */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5239 s->req.flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT|CF_WAKE_CONNECT|CF_WROTE_DATA);
5240 s->res.flags &= ~(CF_SHUTR|CF_SHUTR_NOW|CF_READ_ATTACHED|CF_READ_ERROR|CF_READ_NOEXP|CF_STREAMER|CF_STREAMER_FAST|CF_WRITE_PARTIAL|CF_NEVER_WAIT|CF_WROTE_DATA);
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5241 s->flags &= ~(SF_DIRECT|SF_ASSIGNED|SF_ADDR_SET|SF_BE_ASSIGNED|SF_FORCE_PRST|SF_IGNORE_PRST);
5242 s->flags &= ~(SF_CURR_SESS|SF_REDIRECTABLE|SF_SRV_REUSED);
5243 s->flags &= ~(SF_ERR_MASK|SF_FINST_MASK|SF_REDISP);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]5244
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5245 s->txn->meth = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5246 http_reset_txn(s);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5247 s->txn->flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5248
5249 if (prev_status == 401 || prev_status == 407) {
5250 /* In HTTP keep-alive mode, if we receive a 401, we still have
5251 * a chance of being able to send the visitor again to the same
5252 * server over the same connection. This is required by some
5253 * broken protocols such as NTLM, and anyway whenever there is
5254 * an opportunity for sending the challenge to the proper place,
5255 * it's better to do it (at least it helps with debugging).
5256 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5257 s->txn->flags |= TX_PREFER_LAST;
Willy Tarreaubd99d582015-09-02 10:40:43 +0200[diff] [blame]5258 if (srv_conn)
5259 srv_conn->flags |= CO_FL_PRIVATE;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5260 }
5261
Willy Tarreau53f96852016-02-02 18:50:47 +0100[diff] [blame]5262 /* Never ever allow to reuse a connection from a non-reuse backend */
5263 if (srv_conn && (be->options & PR_O_REUSE_MASK) == PR_O_REUSE_NEVR)
5264 srv_conn->flags |= CO_FL_PRIVATE;
5265
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5266 if (fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5267 s->si[1].flags |= SI_FL_INDEP_STR;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5268
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5269 if (fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5270 s->req.flags |= CF_NEVER_WAIT;
5271 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]5272 }
5273
Willy Tarreau714ea782015-11-25 20:11:11 +0100[diff] [blame]5274 /* we're removing the analysers, we MUST re-enable events detection.
5275 * We don't enable close on the response channel since it's either
5276 * already closed, or in keep-alive with an idle connection handler.
5277 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5278 channel_auto_read(&s->req);
5279 channel_auto_close(&s->req);
5280 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5281
Willy Tarreau1c59bd52015-11-02 20:20:11 +0100[diff] [blame]5282 /* we're in keep-alive with an idle connection, monitor it if not already done */
5283 if (srv_conn && LIST_ISEMPTY(&srv_conn->list)) {
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5284 srv = objt_server(srv_conn->target);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5285 if (!srv)
5286 si_idle_conn(&s->si[1], NULL);
Willy Tarreau53f96852016-02-02 18:50:47 +0100[diff] [blame]5287 else if (srv_conn->flags & CO_FL_PRIVATE)
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5288 si_idle_conn(&s->si[1], &srv->priv_conns);
Willy Tarreau449d74a2015-08-05 17:16:33 +0200[diff] [blame]5289 else if (prev_flags & TX_NOT_FIRST)
5290 /* note: we check the request, not the connection, but
5291 * this is valid for strategies SAFE and AGGR, and in
5292 * case of ALWS, we don't care anyway.
5293 */
5294 si_idle_conn(&s->si[1], &srv->safe_conns);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5295 else
5296 si_idle_conn(&s->si[1], &srv->idle_conns);
Willy Tarreau4320eaa2015-08-05 11:08:30 +0200[diff] [blame]5297 }
Christopher Faulete6006242017-03-10 11:52:44 +0100[diff] [blame]5298 s->req.analysers = strm_li(s) ? strm_li(s)->analysers : 0;
5299 s->res.analysers = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5300}
5301
5302
5303/* This function updates the request state machine according to the response
5304 * state machine and buffer flags. It returns 1 if it changes anything (flag
5305 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5306 * it is only used to find when a request/response couple is complete. Both
5307 * this function and its equivalent should loop until both return zero. It
5308 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5309 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5310int http_sync_req_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5311{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5312 struct channel *chn = &s->req;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5313 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5314 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5315 unsigned int old_state = txn->req.msg_state;
5316
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5317 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
5318 return 0;
5319
5320 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5321 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5322 * We can shut the read side unless we want to abort_on_close,
5323 * or we have a POST request. The issue with POST requests is
5324 * that some browsers still send a CRLF after the request, and
5325 * this CRLF must be read so that it does not remain in the kernel
5326 * buffers, otherwise a close could cause an RST on some systems
5327 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5328 * Note that if we're using keep-alive on the client side, we'd
5329 * rather poll now and keep the polling enabled for the whole
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5330 * stream's life than enabling/disabling it between each
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5331 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5332 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5333 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5334 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5335 !(s->be->options & PR_O_ABRT_CLOSE) &&
5336 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5337 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5338
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5339 /* if the server closes the connection, we want to immediately react
5340 * and close the socket to save packets and syscalls.
5341 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5342 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5343
Willy Tarreau7f876a12015-11-18 11:59:55 +0100[diff] [blame]5344 /* In any case we've finished parsing the request so we must
5345 * disable Nagle when sending data because 1) we're not going
5346 * to shut this side, and 2) the server is waiting for us to
5347 * send pending data.
5348 */
5349 chn->flags |= CF_NEVER_WAIT;
5350
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5351 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
5352 goto wait_other_side;
5353
5354 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
5355 /* The server has not finished to respond, so we
5356 * don't want to move in order not to upset it.
5357 */
5358 goto wait_other_side;
5359 }
5360
5361 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
5362 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5363 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5364 txn->req.msg_state = HTTP_MSG_TUNNEL;
5365 goto wait_other_side;
5366 }
5367
5368 /* When we get here, it means that both the request and the
5369 * response have finished receiving. Depending on the connection
5370 * mode, we'll have to wait for the last bytes to leave in either
5371 * direction, and sometimes for a close to be effective.
5372 */
5373
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5374 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5375 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5376 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
5377 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5378 }
5379 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5380 /* Option forceclose is set, or either side wants to close,
5381 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5382 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5383 * once both states are CLOSED.
5384 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5385 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5386 channel_shutr_now(chn);
5387 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5388 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5389 }
5390 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5391 /* The last possible modes are keep-alive and tunnel. Tunnel mode
5392 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5393 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5394 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
5395 channel_auto_read(chn);
5396 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5397 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5398 }
5399
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5400 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5401 /* if we've just closed an output, let's switch */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5402 s->si[1].flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5403
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5404 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5405 txn->req.msg_state = HTTP_MSG_CLOSING;
5406 goto http_msg_closing;
5407 }
5408 else {
5409 txn->req.msg_state = HTTP_MSG_CLOSED;
5410 goto http_msg_closed;
5411 }
5412 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5413 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5414 }
5415
5416 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
5417 http_msg_closing:
5418 /* nothing else to forward, just waiting for the output buffer
5419 * to be empty and for the shutw_now to take effect.
5420 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5421 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5422 txn->req.msg_state = HTTP_MSG_CLOSED;
5423 goto http_msg_closed;
5424 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5425 else if (chn->flags & CF_SHUTW) {
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5426 txn->req.err_state = txn->req.msg_state;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5427 txn->req.msg_state = HTTP_MSG_ERROR;
5428 goto wait_other_side;
5429 }
5430 }
5431
5432 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
5433 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5434 /* see above in MSG_DONE why we only do this in these states */
5435 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5436 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5437 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]5438 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5439 goto wait_other_side;
5440 }
5441
5442 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5443 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5444}
5445
5446
5447/* This function updates the response state machine according to the request
5448 * state machine and buffer flags. It returns 1 if it changes anything (flag
5449 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5450 * it is only used to find when a request/response couple is complete. Both
5451 * this function and its equivalent should loop until both return zero. It
5452 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5453 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5454int http_sync_res_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5455{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5456 struct channel *chn = &s->res;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5457 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5458 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5459 unsigned int old_state = txn->rsp.msg_state;
5460
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5461 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
5462 return 0;
5463
5464 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
5465 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5466 * still monitor the server connection for a possible close
5467 * while the request is being uploaded, so we don't disable
5468 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5469 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5470 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5471
5472 if (txn->req.msg_state == HTTP_MSG_ERROR)
5473 goto wait_other_side;
5474
5475 if (txn->req.msg_state < HTTP_MSG_DONE) {
5476 /* The client seems to still be sending data, probably
5477 * because we got an error response during an upload.
5478 * We have the choice of either breaking the connection
5479 * or letting it pass through. Let's do the later.
5480 */
5481 goto wait_other_side;
5482 }
5483
5484 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
5485 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5486 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5487 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5488 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5489 goto wait_other_side;
5490 }
5491
5492 /* When we get here, it means that both the request and the
5493 * response have finished receiving. Depending on the connection
5494 * mode, we'll have to wait for the last bytes to leave in either
5495 * direction, and sometimes for a close to be effective.
5496 */
5497
5498 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5499 /* Server-close mode : shut read and wait for the request
5500 * side to close its output buffer. The caller will detect
5501 * when we're in DONE and the other is in CLOSED and will
5502 * catch that for the final cleanup.
5503 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5504 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
5505 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5506 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5507 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5508 /* Option forceclose is set, or either side wants to close,
5509 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5510 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5511 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5512 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5513 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5514 channel_shutr_now(chn);
5515 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5516 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5517 }
5518 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5519 /* The last possible modes are keep-alive and tunnel. Tunnel will
5520 * need to forward remaining data. Keep-alive will need to monitor
5521 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5522 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5523 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5524 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5525 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
5526 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5527 }
5528
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5529 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5530 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5531 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5532 txn->rsp.msg_state = HTTP_MSG_CLOSING;
5533 goto http_msg_closing;
5534 }
5535 else {
5536 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5537 goto http_msg_closed;
5538 }
5539 }
5540 goto wait_other_side;
5541 }
5542
5543 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
5544 http_msg_closing:
5545 /* nothing else to forward, just waiting for the output buffer
5546 * to be empty and for the shutw_now to take effect.
5547 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5548 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5549 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5550 goto http_msg_closed;
5551 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5552 else if (chn->flags & CF_SHUTW) {
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5553 txn->req.err_state = txn->req.msg_state;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5554 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5555 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5556 if (objt_server(s->target))
5557 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5558 goto wait_other_side;
5559 }
5560 }
5561
5562 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
5563 http_msg_closed:
5564 /* drop any pending data */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5565 channel_truncate(chn);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5566 channel_auto_close(chn);
5567 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5568 goto wait_other_side;
5569 }
5570
5571 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5572 /* We force the response to leave immediately if we're waiting for the
5573 * other side, since there is no pending shutdown to push it out.
5574 */
5575 if (!channel_is_empty(chn))
5576 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5577 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5578}
5579
5580
5581/* Resync the request and response state machines. Return 1 if either state
5582 * changes.
5583 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5584int http_resync_states(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5585{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5586 struct http_txn *txn = s->txn;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5587 int old_req_state = txn->req.msg_state;
5588 int old_res_state = txn->rsp.msg_state;
5589
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5590 http_sync_req_state(s);
5591 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5592 if (!http_sync_res_state(s))
5593 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5594 if (!http_sync_req_state(s))
5595 break;
5596 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]5597
Christopher Faulet814d2702017-03-30 11:33:44 +0200[diff] [blame]5598 DPRINTF(stderr,"[%u] %s: stream=%p old=%d,%d cur=%d,%d\n",
5599 now_ms, __FUNCTION__,
5600 s,
5601 old_req_state, old_res_state,
5602 txn->req.msg_state, txn->rsp.msg_state);
5603
5604
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5605 /* OK, both state machines agree on a compatible state.
5606 * There are a few cases we're interested in :
5607 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
5608 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
5609 * directions, so let's simply disable both analysers.
5610 * - HTTP_MSG_CLOSED on the response only means we must abort the
5611 * request.
5612 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
5613 * with server-close mode means we've completed one request and we
5614 * must re-initialize the server connection.
5615 */
5616
5617 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
5618 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
5619 (txn->req.msg_state == HTTP_MSG_CLOSED &&
5620 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5621 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5622 channel_auto_close(&s->req);
5623 channel_auto_read(&s->req);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5624 s->res.analysers &= AN_RES_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5625 channel_auto_close(&s->res);
5626 channel_auto_read(&s->res);
Christopher Faulet6962f4e2016-11-28 14:21:27 +0100[diff] [blame]5627 if (txn->req.msg_state == HTTP_MSG_TUNNEL && HAS_REQ_DATA_FILTERS(s))
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5628 s->req.analysers |= AN_REQ_FLT_XFER_DATA;
Christopher Faulet6962f4e2016-11-28 14:21:27 +0100[diff] [blame]5629 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL && HAS_RSP_DATA_FILTERS(s))
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5630 s->res.analysers |= AN_RES_FLT_XFER_DATA;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5631 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5632 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5633 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->res.flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]5634 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5635 txn->req.msg_state == HTTP_MSG_ERROR) {
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5636 s->res.analysers &= AN_RES_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5637 channel_auto_close(&s->res);
5638 channel_auto_read(&s->res);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5639 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5640 channel_abort(&s->req);
5641 channel_auto_close(&s->req);
5642 channel_auto_read(&s->req);
5643 channel_truncate(&s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5644 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5645 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
5646 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5647 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5648 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
5649 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
5650 /* server-close/keep-alive: terminate this transaction,
5651 * possibly killing the server connection and reinitialize
Willy Tarreau3de5bd62016-05-02 16:07:07 +0200[diff] [blame]5652 * a fresh-new transaction, but only once we're sure there's
5653 * enough room in the request and response buffer to process
Christopher Fauletc0c672a2017-03-28 11:51:33 +0200[diff] [blame]5654 * another request. They must not hold any pending output data
5655 * and the response buffer must realigned
5656 * (realign is done is http_end_txn_clean_session).
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5657 */
Willy Tarreau3de5bd62016-05-02 16:07:07 +0200[diff] [blame]5658 if (s->req.buf->o)
5659 s->req.flags |= CF_WAKE_WRITE;
Christopher Fauletc0c672a2017-03-28 11:51:33 +0200[diff] [blame]5660 else if (s->res.buf->o)
Willy Tarreau3de5bd62016-05-02 16:07:07 +0200[diff] [blame]5661 s->res.flags |= CF_WAKE_WRITE;
Christopher Faulete6006242017-03-10 11:52:44 +0100[diff] [blame]5662 else {
5663 s->req.analysers = AN_REQ_FLT_END;
5664 s->res.analysers = AN_RES_FLT_END;
5665 txn->flags |= TX_WAIT_CLEANUP;
5666 return 1;
5667 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5668 }
5669
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5670 return txn->req.msg_state != old_req_state ||
5671 txn->rsp.msg_state != old_res_state;
5672}
5673
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5674/* This function is an analyser which forwards request body (including chunk
5675 * sizes if any). It is called as soon as we must forward, even if we forward
5676 * zero byte. The only situation where it must not be called is when we're in
5677 * tunnel mode and we want to forward till the close. It's used both to forward
5678 * remaining data and to resync after end of body. It expects the msg_state to
5679 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5680 * read more data, or 1 once we can go on with next request or end the stream.
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5681 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5682 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5683 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5684int http_request_forward_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5685{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5686 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5687 struct http_txn *txn = s->txn;
5688 struct http_msg *msg = &s->txn->req;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5689 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5690
Christopher Faulet814d2702017-03-30 11:33:44 +0200[diff] [blame]5691 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
5692 now_ms, __FUNCTION__,
5693 s,
5694 req,
5695 req->rex, req->wex,
5696 req->flags,
5697 req->buf->i,
5698 req->analysers);
5699
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5700 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5701 return 0;
5702
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5703 if ((req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5704 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5705 /* Output closed while we were sending data. We must abort and
5706 * wake the other side up.
5707 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5708 msg->err_state = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5709 msg->msg_state = HTTP_MSG_ERROR;
5710 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5711 return 1;
5712 }
5713
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5714 /* Note that we don't have to send 100-continue back because we don't
5715 * need the data to complete our job, and it's up to the server to
5716 * decide whether to return 100, 417 or anything else in return of
5717 * an "Expect: 100-continue" header.
5718 */
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5719 if (msg->msg_state == HTTP_MSG_BODY) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5720 msg->msg_state = ((msg->flags & HTTP_MSGF_TE_CHNK)
5721 ? HTTP_MSG_CHUNK_SIZE
5722 : HTTP_MSG_DATA);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5723
5724 /* TODO/filters: when http-buffer-request option is set or if a
5725 * rule on url_param exists, the first chunk size could be
5726 * already parsed. In that case, msg->next is after the chunk
5727 * size (including the CRLF after the size). So this case should
5728 * be handled to */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5729 }
5730
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5731 /* Some post-connect processing might want us to refrain from starting to
5732 * forward data. Currently, the only reason for this is "balance url_param"
5733 * whichs need to parse/process the request after we've enabled forwarding.
5734 */
5735 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5736 if (!(s->res.flags & CF_READ_ATTACHED)) {
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5737 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +0200[diff] [blame]5738 req->flags |= CF_WAKE_CONNECT;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5739 goto missing_data_or_waiting;
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5740 }
5741 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5742 }
5743
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5744 /* in most states, we should abort in case of early close */
5745 channel_auto_close(req);
5746
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5747 if (req->to_forward) {
5748 /* We can't process the buffer's contents yet */
5749 req->flags |= CF_WAKE_WRITE;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5750 goto missing_data_or_waiting;
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5751 }
5752
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5753 if (msg->msg_state < HTTP_MSG_DONE) {
5754 ret = ((msg->flags & HTTP_MSGF_TE_CHNK)
5755 ? http_msg_forward_chunked_body(s, msg)
5756 : http_msg_forward_body(s, msg));
5757 if (!ret)
5758 goto missing_data_or_waiting;
5759 if (ret < 0)
5760 goto return_bad_req;
5761 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5762
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5763 /* other states, DONE...TUNNEL */
5764 /* we don't want to forward closes on DONE except in tunnel mode. */
5765 if ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5766 channel_dont_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5767
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5768 if (http_resync_states(s)) {
5769 /* some state changes occurred, maybe the analyser
5770 * was disabled too. */
5771 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5772 if (req->flags & CF_SHUTW) {
5773 /* request errors are most likely due to the
5774 * server aborting the transfer. */
5775 goto aborted_xfer;
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5776 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5777 if (msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5778 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->err_state, s->be);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5779 goto return_bad_req;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5780 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5781 return 1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5782 }
5783
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5784 /* If "option abortonclose" is set on the backend, we want to monitor
5785 * the client's connection and forward any shutdown notification to the
5786 * server, which will decide whether to close or to go on processing the
5787 * request. We only do that in tunnel mode, and not in other modes since
5788 * it can be abused to exhaust source ports. */
5789 if (s->be->options & PR_O_ABRT_CLOSE) {
5790 channel_auto_read(req);
5791 if ((req->flags & (CF_SHUTR|CF_READ_NULL)) &&
5792 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN))
5793 s->si[1].flags |= SI_FL_NOLINGER;
5794 channel_auto_close(req);
5795 }
5796 else if (s->txn->meth == HTTP_METH_POST) {
5797 /* POST requests may require to read extra CRLF sent by broken
5798 * browsers and which could cause an RST to be sent upon close
5799 * on some systems (eg: Linux). */
5800 channel_auto_read(req);
5801 }
5802 return 0;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5803
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5804 missing_data_or_waiting:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5805 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5806 if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5807 if (!(s->flags & SF_ERR_MASK))
5808 s->flags |= SF_ERR_CLICL;
5809 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5810 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5811 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5812 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5813 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5814 }
5815
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5816 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5817 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5818 if (objt_server(s->target))
5819 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5820
5821 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5822 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5823
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5824 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5825 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5826 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5827
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5828 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5829 * chunks even if the client has closed, so we don't want to set CF_DONTCLOSE.
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5830 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5831 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5832 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5833
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5834 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5835 * what we did. So we always set the CF_EXPECT_MORE flag so that the
Willy Tarreau07293032011-05-30 18:29:28 +0200[diff] [blame]5836 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5837 * modes are already handled by the stream sock layer. We must not do
5838 * this in content-length mode because it could present the MSG_MORE
5839 * flag with the last block of forwarded data, which would cause an
5840 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5841 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5842 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5843 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5844
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5845 return 0;
5846
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5847 return_bad_req: /* let's centralize all bad requests */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5848 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5849 if (sess->listener->counters)
5850 sess->listener->counters->failed_req++;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5851
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5852 return_bad_req_stats_ok:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5853 txn->req.err_state = txn->req.msg_state;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5854 txn->req.msg_state = HTTP_MSG_ERROR;
5855 if (txn->status) {
5856 /* Note: we don't send any error if some data were already sent */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5857 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5858 } else {
5859 txn->status = 400;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]5860 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5861 }
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5862 req->analysers &= AN_REQ_FLT_END;
5863 s->res.analysers &= AN_RES_FLT_END; /* we're in data phase, we want to abort both directions */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5864
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5865 if (!(s->flags & SF_ERR_MASK))
5866 s->flags |= SF_ERR_PRXCOND;
5867 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5868 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5869 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5870 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5871 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5872 }
5873 return 0;
5874
5875 aborted_xfer:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5876 txn->req.err_state = txn->req.msg_state;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5877 txn->req.msg_state = HTTP_MSG_ERROR;
5878 if (txn->status) {
5879 /* Note: we don't send any error if some data were already sent */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5880 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5881 } else {
5882 txn->status = 502;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]5883 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5884 }
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5885 req->analysers &= AN_REQ_FLT_END;
5886 s->res.analysers &= AN_RES_FLT_END; /* we're in data phase, we want to abort both directions */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5887
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5888 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5889 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5890 if (objt_server(s->target))
5891 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5892
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5893 if (!(s->flags & SF_ERR_MASK))
5894 s->flags |= SF_ERR_SRVCL;
5895 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5896 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5897 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5898 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5899 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5900 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5901 return 0;
5902}
5903
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5904/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5905 * processing can continue on next analysers, or zero if it either needs more
5906 * data or wants to immediately abort the response (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5907 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->res.analysers
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5908 * when it has nothing left to do, and may remove any analyser when it wants to
5909 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5910 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5911int http_wait_for_response(struct stream *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5912{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5913 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5914 struct http_txn *txn = s->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5915 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5916 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5917 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5918 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5919 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5920
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5921 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]5922 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5923 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5924 rep,
5925 rep->rex, rep->wex,
5926 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5927 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5928 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5929
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5930 /*
5931 * Now parse the partial (or complete) lines.
5932 * We will check the response syntax, and also join multi-line
5933 * headers. An index of all the lines will be elaborated while
5934 * parsing.
5935 *
5936 * For the parsing, we use a 28 states FSM.
5937 *
5938 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5939 * rep->buf->p = beginning of response
5940 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5941 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5942 * msg->eol = end of current header or line (LF or CRLF)
5943 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5944 */
5945
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5946 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5947 /* There's a protected area at the end of the buffer for rewriting
5948 * purposes. We don't want to start to parse the request if the
5949 * protected area is affected, because we may have to move processed
5950 * data later, which is much more complicated.
5951 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5952 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]5953 if (unlikely(!channel_is_rewritable(rep))) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5954 /* some data has still not left the buffer, wake us once that's done */
5955 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5956 goto abort_response;
5957 channel_dont_close(rep);
5958 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5959 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5960 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5961 }
5962
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5963 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5964 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5965 buffer_slow_realign(rep->buf);
5966
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5967 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5968 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5969 }
5970
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5971 /* 1: we might have to print this header in debug mode */
5972 if (unlikely((global.mode & MODE_DEBUG) &&
5973 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]5974 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5975 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5976
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5977 sol = rep->buf->p;
5978 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5979 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5980
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5981 sol += hdr_idx_first_pos(&txn->hdr_idx);
5982 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5983
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5984 while (cur_idx) {
5985 eol = sol + txn->hdr_idx.v[cur_idx].len;
5986 debug_hdr("srvhdr", s, sol, eol);
5987 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5988 cur_idx = txn->hdr_idx.v[cur_idx].next;
5989 }
5990 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5991
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5992 /*
5993 * Now we quickly check if we have found a full valid response.
5994 * If not so, we check the FD and buffer states before leaving.
5995 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5996 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5997 * responses are checked first.
5998 *
5999 * Depending on whether the client is still there or not, we
6000 * may send an error response back or not. Note that normally
6001 * we should only check for HTTP status there, and check I/O
6002 * errors somewhere else.
6003 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6004
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]6005 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6006 /* Invalid response */
6007 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
6008 /* we detected a parsing error. We want to archive this response
6009 * in the dedicated proxy area for later troubleshooting.
6010 */
6011 hdr_response_bad:
6012 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]6013 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->err_state, sess->fe);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6014
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6015 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6016 if (objt_server(s->target)) {
6017 objt_server(s->target)->counters.failed_resp++;
6018 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6019 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]6020 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6021 channel_auto_close(rep);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6022 rep->analysers &= AN_RES_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6023 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6024 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6025 channel_truncate(rep);
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]6026 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6027
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6028 if (!(s->flags & SF_ERR_MASK))
6029 s->flags |= SF_ERR_PRXCOND;
6030 if (!(s->flags & SF_FINST_MASK))
6031 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6032
6033 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6034 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6035
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6036 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6037 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]6038 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6039 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6040 goto hdr_response_bad;
6041 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6042
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6043 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6044 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6045 if (msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]6046 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->err_state, sess->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]6047 else if (txn->flags & TX_NOT_FIRST)
6048 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]6049
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6050 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6051 if (objt_server(s->target)) {
6052 objt_server(s->target)->counters.failed_resp++;
6053 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6054 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]6055
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6056 channel_auto_close(rep);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6057 rep->analysers &= AN_RES_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6058 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6059 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6060 channel_truncate(rep);
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]6061 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]6062
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6063 if (!(s->flags & SF_ERR_MASK))
6064 s->flags |= SF_ERR_SRVCL;
6065 if (!(s->flags & SF_FINST_MASK))
6066 s->flags |= SF_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]6067 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6068 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6069
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +0200[diff] [blame]6070 /* read timeout : return a 504 to the client. */
6071 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6072 if (msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]6073 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->err_state, sess->fe);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6074
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6075 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6076 if (objt_server(s->target)) {
6077 objt_server(s->target)->counters.failed_resp++;
6078 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6079 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6080
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6081 channel_auto_close(rep);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6082 rep->analysers &= AN_RES_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6083 txn->status = 504;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6084 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6085 channel_truncate(rep);
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]6086 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]6087
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6088 if (!(s->flags & SF_ERR_MASK))
6089 s->flags |= SF_ERR_SRVTO;
6090 if (!(s->flags & SF_FINST_MASK))
6091 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6092 return 0;
6093 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]6094
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6095 /* client abort with an abortonclose */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6096 else if ((rep->flags & CF_SHUTR) && ((s->req.flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6097 sess->fe->fe_counters.cli_aborts++;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6098 s->be->be_counters.cli_aborts++;
6099 if (objt_server(s->target))
6100 objt_server(s->target)->counters.cli_aborts++;
6101
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6102 rep->analysers &= AN_RES_FLT_END;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6103 channel_auto_close(rep);
6104
6105 txn->status = 400;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6106 channel_truncate(rep);
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]6107 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6108
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6109 if (!(s->flags & SF_ERR_MASK))
6110 s->flags |= SF_ERR_CLICL;
6111 if (!(s->flags & SF_FINST_MASK))
6112 s->flags |= SF_FINST_H;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6113
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6114 /* process_stream() will take care of the error */
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6115 return 0;
6116 }
6117
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]6118 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6119 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]6120 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]6121 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->err_state, sess->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]6122 else if (txn->flags & TX_NOT_FIRST)
6123 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6124
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6125 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6126 if (objt_server(s->target)) {
6127 objt_server(s->target)->counters.failed_resp++;
6128 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6129 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6130
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6131 channel_auto_close(rep);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6132 rep->analysers &= AN_RES_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6133 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6134 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6135 channel_truncate(rep);
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]6136 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6137
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6138 if (!(s->flags & SF_ERR_MASK))
6139 s->flags |= SF_ERR_SRVCL;
6140 if (!(s->flags & SF_FINST_MASK))
6141 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6142 return 0;
6143 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]6144
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6145 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6146 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6147 if (msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]6148 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->err_state, sess->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]6149 else if (txn->flags & TX_NOT_FIRST)
6150 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]6151
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6152 s->be->be_counters.failed_resp++;
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6153 rep->analysers &= AN_RES_FLT_END;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6154 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6155
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6156 if (!(s->flags & SF_ERR_MASK))
6157 s->flags |= SF_ERR_CLICL;
6158 if (!(s->flags & SF_FINST_MASK))
6159 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6160
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6161 /* process_stream() will take care of the error */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6162 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6163 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6164
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6165 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]6166 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6167 return 0;
6168 }
6169
6170 /* More interesting part now : we know that we have a complete
6171 * response which at least looks like HTTP. We have an indicator
6172 * of each header's length, so we can parse them quickly.
6173 */
6174
6175 if (unlikely(msg->err_pos >= 0))
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]6176 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->err_state, sess->fe);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6177
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6178 /*
6179 * 1: get the status code
6180 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6181 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6182 if (n < 1 || n > 5)
6183 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6184 /* when the client triggers a 4xx from the server, it's most often due
6185 * to a missing object or permission. These events should be tracked
6186 * because if they happen often, it may indicate a brute force or a
6187 * vulnerability scan.
6188 */
6189 if (n == 4)
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6190 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6191
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6192 if (objt_server(s->target))
6193 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6194
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]6195 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
6196 * exactly one digit "." one digit. This check may be disabled using
6197 * option accept-invalid-http-response.
6198 */
6199 if (!(s->be->options2 & PR_O2_RSPBUG_OK)) {
6200 if (msg->sl.st.v_l != 8) {
6201 msg->err_pos = 0;
6202 goto hdr_response_bad;
6203 }
6204
6205 if (rep->buf->p[4] != '/' ||
6206 !isdigit((unsigned char)rep->buf->p[5]) ||
6207 rep->buf->p[6] != '.' ||
6208 !isdigit((unsigned char)rep->buf->p[7])) {
6209 msg->err_pos = 4;
6210 goto hdr_response_bad;
6211 }
6212 }
6213
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6214 /* check if the response is HTTP/1.1 or above */
6215 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6216 ((rep->buf->p[5] > '1') ||
6217 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6218 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6219
6220 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]6221 txn->flags &= ~(TX_HDR_CONN_PRS|TX_HDR_CONN_CLO|TX_HDR_CONN_KAL|TX_HDR_CONN_UPG|TX_CON_CLO_SET|TX_CON_KAL_SET);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6222
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6223 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6224 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6225
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6226 txn->status = strl2ui(rep->buf->p + msg->sl.st.c, msg->sl.st.c_l);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6227
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]6228 /* Adjust server's health based on status code. Note: status codes 501
6229 * and 505 are triggered on demand by client request, so we must not
6230 * count them as server failures.
6231 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6232 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6233 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6234 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6235 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6236 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6237 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6238
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6239 /*
6240 * 2: check for cacheability.
6241 */
6242
6243 switch (txn->status) {
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]6244 case 100:
6245 /*
6246 * We may be facing a 100-continue response, in which case this
6247 * is not the right response, and we're waiting for the next one.
6248 * Let's allow this response to go to the client and wait for the
6249 * next one.
6250 */
6251 hdr_idx_init(&txn->hdr_idx);
6252 msg->next -= channel_forward(rep, msg->next);
6253 msg->msg_state = HTTP_MSG_RPBEFORE;
6254 txn->status = 0;
6255 s->logs.t_data = -1; /* was not a response yet */
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6256 FLT_STRM_CB(s, flt_http_reset(s, msg));
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]6257 goto next_one;
6258
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6259 case 200:
6260 case 203:
6261 case 206:
6262 case 300:
6263 case 301:
6264 case 410:
6265 /* RFC2616 @13.4:
6266 * "A response received with a status code of
6267 * 200, 203, 206, 300, 301 or 410 MAY be stored
6268 * by a cache (...) unless a cache-control
6269 * directive prohibits caching."
6270 *
6271 * RFC2616 @9.5: POST method :
6272 * "Responses to this method are not cacheable,
6273 * unless the response includes appropriate
6274 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6275 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6276 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6277 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6278 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
6279 break;
6280 default:
6281 break;
6282 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6283
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6284 /*
6285 * 3: we may need to capture headers
6286 */
6287 s->logs.logwait &= ~LW_RESP;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6288 if (unlikely((s->logs.logwait & LW_RSPHDR) && s->res_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6289 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6290 s->res_cap, sess->fe->rsp_cap);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6291
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6292 /* 4: determine the transfer-length according to RFC2616 #4.4, updated
6293 * by RFC7230#3.3.3 :
6294 *
6295 * The length of a message body is determined by one of the following
6296 * (in order of precedence):
6297 *
Christopher Fauletd1cd2092016-11-28 10:14:03 +0100[diff] [blame]6298 * 1. Any 2xx (Successful) response to a CONNECT request implies that
6299 * the connection will become a tunnel immediately after the empty
6300 * line that concludes the header fields. A client MUST ignore
6301 * any Content-Length or Transfer-Encoding header fields received
6302 * in such a message. Any 101 response (Switching Protocols) is
6303 * managed in the same manner.
6304 *
6305 * 2. Any response to a HEAD request and any response with a 1xx
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6306 * (Informational), 204 (No Content), or 304 (Not Modified) status
6307 * code is always terminated by the first empty line after the
6308 * header fields, regardless of the header fields present in the
6309 * message, and thus cannot contain a message body.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6310 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6311 * 3. If a Transfer-Encoding header field is present and the chunked
6312 * transfer coding (Section 4.1) is the final encoding, the message
6313 * body length is determined by reading and decoding the chunked
6314 * data until the transfer coding indicates the data is complete.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6315 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6316 * If a Transfer-Encoding header field is present in a response and
6317 * the chunked transfer coding is not the final encoding, the
6318 * message body length is determined by reading the connection until
6319 * it is closed by the server. If a Transfer-Encoding header field
6320 * is present in a request and the chunked transfer coding is not
6321 * the final encoding, the message body length cannot be determined
6322 * reliably; the server MUST respond with the 400 (Bad Request)
6323 * status code and then close the connection.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6324 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6325 * If a message is received with both a Transfer-Encoding and a
6326 * Content-Length header field, the Transfer-Encoding overrides the
6327 * Content-Length. Such a message might indicate an attempt to
6328 * perform request smuggling (Section 9.5) or response splitting
6329 * (Section 9.4) and ought to be handled as an error. A sender MUST
6330 * remove the received Content-Length field prior to forwarding such
6331 * a message downstream.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6332 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6333 * 4. If a message is received without Transfer-Encoding and with
6334 * either multiple Content-Length header fields having differing
6335 * field-values or a single Content-Length header field having an
6336 * invalid value, then the message framing is invalid and the
6337 * recipient MUST treat it as an unrecoverable error. If this is a
6338 * request message, the server MUST respond with a 400 (Bad Request)
6339 * status code and then close the connection. If this is a response
6340 * message received by a proxy, the proxy MUST close the connection
6341 * to the server, discard the received response, and send a 502 (Bad
6342 * Gateway) response to the client. If this is a response message
6343 * received by a user agent, the user agent MUST close the
6344 * connection to the server and discard the received response.
6345 *
6346 * 5. If a valid Content-Length header field is present without
6347 * Transfer-Encoding, its decimal value defines the expected message
6348 * body length in octets. If the sender closes the connection or
6349 * the recipient times out before the indicated number of octets are
6350 * received, the recipient MUST consider the message to be
6351 * incomplete and close the connection.
6352 *
6353 * 6. If this is a request message and none of the above are true, then
6354 * the message body length is zero (no message body is present).
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6355 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6356 * 7. Otherwise, this is a response message without a declared message
6357 * body length, so the message body length is determined by the
6358 * number of octets received prior to the server closing the
6359 * connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6360 */
6361
6362 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6363 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6364 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6365 * FIXME: should we parse anyway and return an error on chunked encoding ?
6366 */
Christopher Fauletd1cd2092016-11-28 10:14:03 +0100[diff] [blame]6367 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
6368 txn->status == 101)) {
6369 /* Either we've established an explicit tunnel, or we're
6370 * switching the protocol. In both cases, we're very unlikely
6371 * to understand the next protocols. We have to switch to tunnel
6372 * mode, so that we transfer the request and responses then let
6373 * this protocol pass unmodified. When we later implement specific
6374 * parsers for such protocols, we'll want to check the Upgrade
6375 * header which contains information about that protocol for
6376 * responses with status 101 (eg: see RFC2817 about TLS).
6377 */
6378 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
6379 msg->flags |= HTTP_MSGF_XFER_LEN;
6380 goto end;
6381 }
6382
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6383 if (txn->meth == HTTP_METH_HEAD ||
6384 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6385 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6386 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6387 goto skip_content_length;
6388 }
6389
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6390 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6391 ctx.idx = 0;
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]6392 while (http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6393 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6394 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
6395 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6396 /* bad transfer-encoding (chunked followed by something else) */
6397 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6398 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6399 break;
6400 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6401 }
6402
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6403 /* Chunked responses must have their content-length removed */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6404 ctx.idx = 0;
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6405 if (use_close_only || (msg->flags & HTTP_MSGF_TE_CHNK)) {
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6406 while (http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx))
6407 http_remove_header2(msg, &txn->hdr_idx, &ctx);
6408 }
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6409 else while (http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6410 signed long long cl;
6411
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6412 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6413 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6414 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6415 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6416
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6417 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6418 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6419 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6420 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6421
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6422 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6423 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6424 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6425 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6426
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6427 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6428 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6429 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6430 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6431
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6432 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6433 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6434 }
6435
Christopher Fauletd1cd2092016-11-28 10:14:03 +0100[diff] [blame]6436 skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6437 /* Now we have to check if we need to modify the Connection header.
6438 * This is more difficult on the response than it is on the request,
6439 * because we can have two different HTTP versions and we don't know
6440 * how the client will interprete a response. For instance, let's say
6441 * that the client sends a keep-alive request in HTTP/1.0 and gets an
6442 * HTTP/1.1 response without any header. Maybe it will bound itself to
6443 * HTTP/1.0 because it only knows about it, and will consider the lack
6444 * of header as a close, or maybe it knows HTTP/1.1 and can consider
6445 * the lack of header as a keep-alive. Thus we will use two flags
6446 * indicating how a request MAY be understood by the client. In case
6447 * of multiple possibilities, we'll fix the header to be explicit. If
6448 * ambiguous cases such as both close and keepalive are seen, then we
6449 * will fall back to explicit close. Note that we won't take risks with
6450 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6451 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6452 */
Christopher Fauletd1cd2092016-11-28 10:14:03 +0100[diff] [blame]6453 if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
6454 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
6455 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6456 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6457 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6458
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6459 /* this situation happens when combining pretend-keepalive with httpclose. */
6460 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6461 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6462 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6463 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
6464
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6465 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6466 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6467 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
6468 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6469
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6470 /* now adjust header transformations depending on current state */
6471 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
6472 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
6473 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6474 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6475 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6476 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6477 else { /* SCL / KAL */
6478 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6479 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6480 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6481 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6482
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6483 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6484 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6485
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6486 /* Some keep-alive responses are converted to Server-close if
6487 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6488 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6489 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
6490 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6491 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6492 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6493 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6494 }
6495
Christopher Fauletd1cd2092016-11-28 10:14:03 +0100[diff] [blame]6496 end:
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6497 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6498 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6499
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6500 /* end of job, return OK */
6501 rep->analysers &= ~an_bit;
6502 rep->analyse_exp = TICK_ETERNITY;
6503 channel_auto_close(rep);
6504 return 1;
6505
6506 abort_keep_alive:
6507 /* A keep-alive request to the server failed on a network error.
6508 * The client is required to retry. We need to close without returning
6509 * any other information so that the client retries.
6510 */
6511 txn->status = 0;
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6512 rep->analysers &= AN_RES_FLT_END;
6513 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6514 channel_auto_close(rep);
6515 s->logs.logwait = 0;
6516 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6517 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6518 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6519 http_reply_and_close(s, txn->status, NULL);
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6520 return 0;
6521}
6522
6523/* This function performs all the processing enabled for the current response.
6524 * It normally returns 1 unless it wants to break. It relies on buffers flags,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6525 * and updates s->res.analysers. It might make sense to explode it into several
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6526 * other functions. It works like process_request (see indications above).
6527 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6528int http_process_res_common(struct stream *s, struct channel *rep, int an_bit, struct proxy *px)
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6529{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6530 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6531 struct http_txn *txn = s->txn;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6532 struct http_msg *msg = &txn->rsp;
6533 struct proxy *cur_proxy;
6534 struct cond_wordlist *wl;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]6535 enum rule_result ret = HTTP_RULE_RES_CONT;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6536
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6537 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6538 now_ms, __FUNCTION__,
6539 s,
6540 rep,
6541 rep->rex, rep->wex,
6542 rep->flags,
6543 rep->buf->i,
6544 rep->analysers);
6545
6546 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
6547 return 0;
6548
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6549 /* The stats applet needs to adjust the Connection header but we don't
6550 * apply any filter there.
6551 */
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6552 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
6553 rep->analysers &= ~an_bit;
6554 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6555 goto skip_filters;
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6556 }
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6557
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6558 /*
6559 * We will have to evaluate the filters.
6560 * As opposed to version 1.2, now they will be evaluated in the
6561 * filters order and not in the header order. This means that
6562 * each filter has to be validated among all headers.
6563 *
6564 * Filters are tried with ->be first, then with ->fe if it is
6565 * different from ->be.
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6566 *
6567 * Maybe we are in resume condiion. In this case I choose the
6568 * "struct proxy" which contains the rule list matching the resume
6569 * pointer. If none of theses "struct proxy" match, I initialise
6570 * the process with the first one.
6571 *
6572 * In fact, I check only correspondance betwwen the current list
6573 * pointer and the ->fe rule list. If it doesn't match, I initialize
6574 * the loop with the ->be.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6575 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6576 if (s->current_rule_list == &sess->fe->http_res_rules)
6577 cur_proxy = sess->fe;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6578 else
6579 cur_proxy = s->be;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6580 while (1) {
6581 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6582
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6583 /* evaluate http-response rules */
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6584 if (ret == HTTP_RULE_RES_CONT) {
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]6585 ret = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, s);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]6586
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6587 if (ret == HTTP_RULE_RES_BADREQ)
6588 goto return_srv_prx_502;
6589
6590 if (ret == HTTP_RULE_RES_DONE) {
6591 rep->analysers &= ~an_bit;
6592 rep->analyse_exp = TICK_ETERNITY;
6593 return 1;
6594 }
6595 }
6596
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6597 /* we need to be called again. */
6598 if (ret == HTTP_RULE_RES_YIELD) {
6599 channel_dont_close(rep);
6600 return 0;
6601 }
6602
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6603 /* try headers filters */
6604 if (rule_set->rsp_exp != NULL) {
6605 if (apply_filters_to_response(s, rep, rule_set) < 0) {
6606 return_bad_resp:
6607 if (objt_server(s->target)) {
6608 objt_server(s->target)->counters.failed_resp++;
6609 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6610 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6611 s->be->be_counters.failed_resp++;
6612 return_srv_prx_502:
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6613 rep->analysers &= AN_RES_FLT_END;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6614 txn->status = 502;
6615 s->logs.t_data = -1; /* was not a valid response */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6616 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6617 channel_truncate(rep);
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]6618 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6619 if (!(s->flags & SF_ERR_MASK))
6620 s->flags |= SF_ERR_PRXCOND;
6621 if (!(s->flags & SF_FINST_MASK))
6622 s->flags |= SF_FINST_H;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6623 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6624 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6625 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6626
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6627 /* has the response been denied ? */
6628 if (txn->flags & TX_SVDENY) {
6629 if (objt_server(s->target))
6630 objt_server(s->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6631
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6632 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6633 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6634 if (sess->listener->counters)
6635 sess->listener->counters->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6636
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6637 goto return_srv_prx_502;
6638 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]6639
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6640 /* add response headers from the rule sets in the same order */
6641 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6642 if (txn->status < 200 && txn->status != 101)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6643 break;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6644 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]6645 int ret = acl_exec_cond(wl->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6646 ret = acl_pass(ret);
6647 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
6648 ret = !ret;
6649 if (!ret)
6650 continue;
6651 }
6652 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
6653 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6654 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6655
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6656 /* check whether we're already working on the frontend */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6657 if (cur_proxy == sess->fe)
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6658 break;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6659 cur_proxy = sess->fe;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6660 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6661
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6662 /* After this point, this anayzer can't return yield, so we can
6663 * remove the bit corresponding to this analyzer from the list.
6664 *
6665 * Note that the intermediate returns and goto found previously
6666 * reset the analyzers.
6667 */
6668 rep->analysers &= ~an_bit;
6669 rep->analyse_exp = TICK_ETERNITY;
6670
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6671 /* OK that's all we can do for 1xx responses */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6672 if (unlikely(txn->status < 200 && txn->status != 101))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6673 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6674
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6675 /*
6676 * Now check for a server cookie.
6677 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]6678 if (s->be->cookie_name || sess->fe->capture_name || (s->be->options & PR_O_CHK_CACHE))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6679 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6680
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6681 /*
6682 * Check for cache-control or pragma headers if required.
6683 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6684 if (((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)) && txn->status != 101)
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6685 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6686
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6687 /*
6688 * Add server cookie in the response if needed
6689 */
6690 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
6691 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6692 (!(s->flags & SF_DIRECT) ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6693 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
6694 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
6695 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
6696 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
6697 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6698 !(s->flags & SF_IGNORE_PRST)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6699 /* the server is known, it's not the one the client requested, or the
6700 * cookie's last seen date needs to be refreshed. We have to
6701 * insert a set-cookie here, except if we want to insert only on POST
6702 * requests and this one isn't. Note that servers which don't have cookies
6703 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6704 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6705 if (!objt_server(s->target)->cookie) {
6706 chunk_printf(&trash,
6707 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
6708 s->be->cookie_name);
6709 }
6710 else {
6711 chunk_printf(&trash, "Set-Cookie: %s=%s", s->be->cookie_name, objt_server(s->target)->cookie);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6712
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6713 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
6714 /* emit last_date, which is mandatory */
6715 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6716 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6717 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6718
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6719 if (s->be->cookie_maxlife) {
6720 /* emit first_date, which is either the original one or
6721 * the current date.
6722 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6723 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6724 s30tob64(txn->cookie_first_date ?
6725 txn->cookie_first_date >> 2 :
6726 (date.tv_sec+3) >> 2, trash.str + trash.len);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6727 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6728 }
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6729 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6730 chunk_appendf(&trash, "; path=/");
6731 }
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6732
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6733 if (s->be->cookie_domain)
6734 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6735
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6736 if (s->be->ck_opts & PR_CK_HTTPONLY)
6737 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6738
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6739 if (s->be->ck_opts & PR_CK_SECURE)
6740 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6741
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6742 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
6743 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6744
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6745 txn->flags &= ~TX_SCK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6746 if (objt_server(s->target)->cookie && (s->flags & SF_DIRECT))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6747 /* the server did not change, only the date was updated */
6748 txn->flags |= TX_SCK_UPDATED;
6749 else
6750 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6751
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6752 /* Here, we will tell an eventual cache on the client side that we don't
6753 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6754 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6755 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6756 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6757 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6758
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6759 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6760
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6761 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
6762 "Cache-control: private", 22) < 0))
6763 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6764 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6765 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6766
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6767 /*
6768 * Check if result will be cacheable with a cookie.
6769 * We'll block the response if security checks have caught
6770 * nasty things such as a cacheable cookie.
6771 */
6772 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6773 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
6774 (s->be->options & PR_O_CHK_CACHE)) {
6775 /* we're in presence of a cacheable response containing
6776 * a set-cookie header. We'll block it as requested by
6777 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6778 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6779 if (objt_server(s->target))
6780 objt_server(s->target)->counters.failed_secu++;
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6781
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6782 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6783 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6784 if (sess->listener->counters)
6785 sess->listener->counters->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6786
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6787 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
6788 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6789 send_log(s->be, LOG_ALERT,
6790 "Blocking cacheable cookie in response from instance %s, server %s.\n",
6791 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6792 goto return_srv_prx_502;
6793 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6794
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6795 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6796 /*
6797 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
6798 * If an "Upgrade" token is found, the header is left untouched in order
6799 * not to have to deal with some client bugs : some of them fail an upgrade
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6800 * if anything but "Upgrade" is present in the Connection header. We don't
6801 * want to touch any 101 response either since it's switching to another
6802 * protocol.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6803 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6804 if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) &&
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6805 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6806 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6807 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
6808 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6809
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6810 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6811 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6812 /* we want a keep-alive response here. Keep-alive header
6813 * required if either side is not 1.1.
6814 */
6815 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
6816 want_flags |= TX_CON_KAL_SET;
6817 }
6818 else {
6819 /* we want a close response here. Close header required if
6820 * the server is 1.1, regardless of the client.
6821 */
6822 if (msg->flags & HTTP_MSGF_VER_11)
6823 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6824 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6825
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6826 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
6827 http_change_connection_header(txn, msg, want_flags);
6828 }
6829
6830 skip_header_mangling:
Christopher Faulet69744d92017-03-30 10:54:35 +0200[diff] [blame]6831 /* Always enter in the body analyzer */
6832 rep->analysers &= ~AN_RES_FLT_XFER_DATA;
6833 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6834
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6835 /* if the user wants to log as soon as possible, without counting
6836 * bytes from the server, then this is the right moment. We have
6837 * to temporarily assign bytes_out to log what we currently have.
6838 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6839 if (!LIST_ISEMPTY(&sess->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6840 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
6841 s->logs.bytes_out = txn->rsp.eoh;
6842 s->do_log(s);
6843 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6844 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6845 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6846}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6847
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6848/* This function is an analyser which forwards response body (including chunk
6849 * sizes if any). It is called as soon as we must forward, even if we forward
6850 * zero byte. The only situation where it must not be called is when we're in
6851 * tunnel mode and we want to forward till the close. It's used both to forward
6852 * remaining data and to resync after end of body. It expects the msg_state to
6853 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6854 * read more data, or 1 once we can go on with next request or end the stream.
Willy Tarreaud3510212014-04-21 11:24:13 +0200[diff] [blame]6855 *
6856 * It is capable of compressing response data both in content-length mode and
6857 * in chunked mode. The state machines follows different flows depending on
6858 * whether content-length and chunked modes are used, since there are no
6859 * trailers in content-length :
6860 *
6861 * chk-mode cl-mode
6862 * ,----- BODY -----.
6863 * / \
6864 * V size > 0 V chk-mode
6865 * .--> SIZE -------------> DATA -------------> CRLF
6866 * | | size == 0 | last byte |
6867 * | v final crlf v inspected |
6868 * | TRAILERS -----------> DONE |
6869 * | |
6870 * `----------------------------------------------'
6871 *
6872 * Compression only happens in the DATA state, and must be flushed in final
6873 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
6874 * is performed at once on final states for all bytes parsed, or when leaving
6875 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6876 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6877int http_response_forward_body(struct stream *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6878{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6879 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6880 struct http_txn *txn = s->txn;
6881 struct http_msg *msg = &s->txn->rsp;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6882 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6883
Christopher Faulet814d2702017-03-30 11:33:44 +0200[diff] [blame]6884 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
6885 now_ms, __FUNCTION__,
6886 s,
6887 res,
6888 res->rex, res->wex,
6889 res->flags,
6890 res->buf->i,
6891 res->analysers);
6892
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6893 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6894 return 0;
6895
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6896 if ((res->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6897 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6898 !s->req.analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6899 /* Output closed while we were sending data. We must abort and
6900 * wake the other side up.
6901 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]6902 msg->err_state = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6903 msg->msg_state = HTTP_MSG_ERROR;
6904 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6905 return 1;
6906 }
6907
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6908 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6909 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6910
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6911 if (msg->msg_state == HTTP_MSG_BODY) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6912 msg->msg_state = ((msg->flags & HTTP_MSGF_TE_CHNK)
6913 ? HTTP_MSG_CHUNK_SIZE
6914 : HTTP_MSG_DATA);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6915 }
6916
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6917 if (res->to_forward) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6918 /* We can't process the buffer's contents yet */
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6919 res->flags |= CF_WAKE_WRITE;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6920 goto missing_data_or_waiting;
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6921 }
6922
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6923 if (msg->msg_state < HTTP_MSG_DONE) {
6924 ret = ((msg->flags & HTTP_MSGF_TE_CHNK)
6925 ? http_msg_forward_chunked_body(s, msg)
6926 : http_msg_forward_body(s, msg));
6927 if (!ret)
6928 goto missing_data_or_waiting;
6929 if (ret < 0)
6930 goto return_bad_res;
6931 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6932
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6933 /* other states, DONE...TUNNEL */
6934 /* for keep-alive we don't want to forward closes on DONE */
6935 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6936 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
6937 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]6938
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6939 if (http_resync_states(s)) {
6940 /* some state changes occurred, maybe the analyser was disabled
6941 * too. */
6942 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
6943 if (res->flags & CF_SHUTW) {
6944 /* response errors are most likely due to the
6945 * client aborting the transfer. */
6946 goto aborted_xfer;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6947 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6948 if (msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]6949 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->err_state, strm_fe(s));
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6950 goto return_bad_res;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6951 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6952 return 1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6953 }
Willy Tarreauf51d03c2016-05-02 15:25:15 +0200[diff] [blame]6954 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6955
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6956 missing_data_or_waiting:
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6957 if (res->flags & CF_SHUTW)
6958 goto aborted_xfer;
6959
6960 /* stop waiting for data if the input is closed before the end. If the
6961 * client side was already closed, it means that the client has aborted,
6962 * so we don't want to count this as a server abort. Otherwise it's a
6963 * server abort.
6964 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6965 if (res->flags & CF_SHUTR) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6966 if ((s->req.flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6967 goto aborted_xfer;
Christopher Fauleta46bbd82015-06-19 09:00:58 +0200[diff] [blame]6968 /* If we have some pending data, we continue the processing */
6969 if (!buffer_pending(res->buf)) {
6970 if (!(s->flags & SF_ERR_MASK))
6971 s->flags |= SF_ERR_SRVCL;
6972 s->be->be_counters.srv_aborts++;
6973 if (objt_server(s->target))
6974 objt_server(s->target)->counters.srv_aborts++;
6975 goto return_bad_res_stats_ok;
6976 }
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6977 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6978
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6979 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6980 if (!s->req.analysers)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6981 goto return_bad_res;
6982
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6983 /* When TE: chunked is used, we need to get there again to parse
6984 * remaining chunks even if the server has closed, so we don't want to
Christopher Faulet69744d92017-03-30 10:54:35 +0200[diff] [blame]6985 * set CF_DONTCLOSE. Similarly, if keep-alive is set on the client side
6986 * or if there are filters registered on the stream, we don't want to
6987 * forward a close
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6988 */
Christopher Faulet69744d92017-03-30 10:54:35 +0200[diff] [blame]6989 if ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Christopher Fauletf1cc5d02017-02-08 09:45:13 +0100[diff] [blame]6990 HAS_DATA_FILTERS(s, res) ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6991 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6992 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6993 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6994
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6995 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6996 * what we did. So we always set the CF_EXPECT_MORE flag so that the
Willy Tarreau07293032011-05-30 18:29:28 +0200[diff] [blame]6997 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6998 * modes are already handled by the stream sock layer. We must not do
6999 * this in content-length mode because it could present the MSG_MORE
7000 * flag with the last block of forwarded data, which would cause an
7001 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7002 */
Christopher Faulet92d36382015-11-05 13:35:03 +0100[diff] [blame]7003 if ((msg->flags & HTTP_MSGF_TE_CHNK) || (msg->flags & HTTP_MSGF_COMPRESSING))
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7004 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7005
Christopher Faulet69744d92017-03-30 10:54:35 +0200[diff] [blame]7006 /* If there is neither content-length, nor transfer-encoding header
7007 * _AND_ there is no data filtering, we can safely forward all data
7008 * indefinitely. */
7009 if (!(msg->flags & HTTP_MSGF_XFER_LEN) && !HAS_DATA_FILTERS(s, res)) {
7010 buffer_flush(res->buf);
7011 channel_forward_forever(res);
7012 }
7013
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7014 /* the stream handler will take care of timeouts and errors */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7015 return 0;
7016
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]7017 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]7018 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7019 if (objt_server(s->target))
7020 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7021
7022 return_bad_res_stats_ok:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]7023 txn->rsp.err_state = txn->rsp.msg_state;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7024 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]7025 /* don't send any error message as we're in the body */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]7026 http_reply_and_close(s, txn->status, NULL);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]7027 res->analysers &= AN_RES_FLT_END;
7028 s->req.analysers &= AN_REQ_FLT_END; /* we're in data phase, we want to abort both directions */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7029 if (objt_server(s->target))
7030 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7031
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7032 if (!(s->flags & SF_ERR_MASK))
7033 s->flags |= SF_ERR_PRXCOND;
7034 if (!(s->flags & SF_FINST_MASK))
7035 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7036 return 0;
7037
7038 aborted_xfer:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]7039 txn->rsp.err_state = txn->rsp.msg_state;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7040 txn->rsp.msg_state = HTTP_MSG_ERROR;
7041 /* don't send any error message as we're in the body */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]7042 http_reply_and_close(s, txn->status, NULL);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]7043 res->analysers &= AN_RES_FLT_END;
7044 s->req.analysers &= AN_REQ_FLT_END; /* we're in data phase, we want to abort both directions */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7045
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7046 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]7047 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7048 if (objt_server(s->target))
7049 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7050
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7051 if (!(s->flags & SF_ERR_MASK))
7052 s->flags |= SF_ERR_CLICL;
7053 if (!(s->flags & SF_FINST_MASK))
7054 s->flags |= SF_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7055 return 0;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7056}
7057
7058
7059static inline int
7060http_msg_forward_body(struct stream *s, struct http_msg *msg)
7061{
7062 struct channel *chn = msg->chn;
7063 int ret;
7064
7065 /* Here we have the guarantee to be in HTTP_MSG_DATA or HTTP_MSG_ENDING state */
7066
7067 if (msg->msg_state == HTTP_MSG_ENDING)
7068 goto ending;
7069
7070 /* Neither content-length, nor transfer-encoding was found, so we must
7071 * read the body until the server connection is closed. In that case, we
7072 * eat data as they come. Of course, this happens for response only. */
7073 if (!(msg->flags & HTTP_MSGF_XFER_LEN)) {
7074 unsigned long long len = (chn->buf->i - msg->next);
7075 msg->chunk_len += len;
7076 msg->body_len += len;
7077 }
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7078 ret = FLT_STRM_DATA_CB(s, chn, flt_http_data(s, msg),
7079 /* default_ret */ MIN(msg->chunk_len, chn->buf->i - msg->next),
7080 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7081 msg->next += ret;
7082 msg->chunk_len -= ret;
7083 if (msg->chunk_len) {
7084 /* input empty or output full */
7085 if (chn->buf->i > msg->next)
7086 chn->flags |= CF_WAKE_WRITE;
7087 goto missing_data_or_waiting;
7088 }
7089
Christopher Fauletf1cc5d02017-02-08 09:45:13 +0100[diff] [blame]7090 /* The server still sending data that should be filtered */
7091 if (!(msg->flags & HTTP_MSGF_XFER_LEN) && !(chn->flags & CF_SHUTR))
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7092 goto missing_data_or_waiting;
Christopher Fauletf1cc5d02017-02-08 09:45:13 +0100[diff] [blame]7093
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7094 msg->msg_state = HTTP_MSG_ENDING;
7095
7096 ending:
7097 /* we may have some pending data starting at res->buf->p such as a last
7098 * chunk of data or trailers. */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7099 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
7100 /* default_ret */ msg->next,
7101 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7102 b_adv(chn->buf, ret);
7103 msg->next -= ret;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]7104 if (unlikely(!(chn->flags & CF_WROTE_DATA) || msg->sov > 0))
7105 msg->sov -= ret;
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]7106 if (msg->next)
7107 goto waiting;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]7108
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7109 FLT_STRM_DATA_CB(s, chn, flt_http_end(s, msg),
7110 /* default_ret */ 1,
7111 /* on_error */ goto error,
7112 /* on_wait */ goto waiting);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7113 msg->msg_state = HTTP_MSG_DONE;
7114 return 1;
7115
7116 missing_data_or_waiting:
7117 /* we may have some pending data starting at chn->buf->p */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7118 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
7119 /* default_ret */ msg->next,
7120 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7121 b_adv(chn->buf, ret);
7122 msg->next -= ret;
7123 if (!(chn->flags & CF_WROTE_DATA) || msg->sov > 0)
7124 msg->sov -= ret;
Christopher Faulet75e2eb62015-12-15 10:41:47 +0100[diff] [blame]7125 if (!HAS_DATA_FILTERS(s, chn))
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7126 msg->chunk_len -= channel_forward(chn, msg->chunk_len);
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]7127 waiting:
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7128 return 0;
7129 error:
7130 return -1;
7131}
7132
7133static inline int
7134http_msg_forward_chunked_body(struct stream *s, struct http_msg *msg)
7135{
7136 struct channel *chn = msg->chn;
7137 int ret;
7138
7139 /* Here we have the guarantee to be in one of the following state:
7140 * HTTP_MSG_DATA, HTTP_MSG_CHUNK_SIZE, HTTP_MSG_CHUNK_CRLF,
7141 * HTTP_MSG_TRAILERS or HTTP_MSG_ENDING. */
7142
7143 switch_states:
7144 switch (msg->msg_state) {
7145 case HTTP_MSG_DATA:
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7146 ret = FLT_STRM_DATA_CB(s, chn, flt_http_data(s, msg),
7147 /* default_ret */ MIN(msg->chunk_len, chn->buf->i - msg->next),
7148 /* on_error */ goto error);
7149 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7150 msg->chunk_len -= ret;
7151 if (msg->chunk_len) {
7152 /* input empty or output full */
7153 if (chn->buf->i > msg->next)
7154 chn->flags |= CF_WAKE_WRITE;
7155 goto missing_data_or_waiting;
7156 }
7157
7158 /* nothing left to forward for this chunk*/
7159 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
7160 /* fall through for HTTP_MSG_CHUNK_CRLF */
7161
7162 case HTTP_MSG_CHUNK_CRLF:
7163 /* we want the CRLF after the data */
7164 ret = http_skip_chunk_crlf(msg);
7165 if (ret == 0)
7166 goto missing_data_or_waiting;
7167 if (ret < 0)
7168 goto chunk_parsing_error;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]7169 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7170 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
7171 /* fall through for HTTP_MSG_CHUNK_SIZE */
7172
7173 case HTTP_MSG_CHUNK_SIZE:
7174 /* read the chunk size and assign it to ->chunk_len,
7175 * then set ->next to point to the body and switch to
7176 * DATA or TRAILERS state.
7177 */
7178 ret = http_parse_chunk_size(msg);
7179 if (ret == 0)
7180 goto missing_data_or_waiting;
7181 if (ret < 0)
7182 goto chunk_parsing_error;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]7183 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7184 if (msg->chunk_len) {
7185 msg->msg_state = HTTP_MSG_DATA;
7186 goto switch_states;
7187 }
7188 msg->msg_state = HTTP_MSG_TRAILERS;
7189 /* fall through for HTTP_MSG_TRAILERS */
7190
7191 case HTTP_MSG_TRAILERS:
7192 ret = http_forward_trailers(msg);
7193 if (ret < 0)
7194 goto chunk_parsing_error;
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7195 FLT_STRM_DATA_CB(s, chn, flt_http_chunk_trailers(s, msg),
7196 /* default_ret */ 1,
7197 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7198 msg->next += msg->sol;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7199 if (!ret)
7200 goto missing_data_or_waiting;
7201 break;
7202
7203 case HTTP_MSG_ENDING:
7204 goto ending;
7205
7206 default:
7207 /* This should no happen in this function */
7208 goto error;
7209 }
7210
7211 msg->msg_state = HTTP_MSG_ENDING;
7212 ending:
7213 /* we may have some pending data starting at res->buf->p such as a last
7214 * chunk of data or trailers. */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7215 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7216 /* default_ret */ msg->next,
7217 /* on_error */ goto error);
7218 b_adv(chn->buf, ret);
7219 msg->next -= ret;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]7220 if (unlikely(!(chn->flags & CF_WROTE_DATA) || msg->sov > 0))
7221 msg->sov -= ret;
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]7222 if (msg->next)
7223 goto waiting;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]7224
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7225 FLT_STRM_DATA_CB(s, chn, flt_http_end(s, msg),
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7226 /* default_ret */ 1,
7227 /* on_error */ goto error,
7228 /* on_wait */ goto waiting);
7229 msg->msg_state = HTTP_MSG_DONE;
7230 return 1;
7231
7232 missing_data_or_waiting:
7233 /* we may have some pending data starting at chn->buf->p */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7234 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7235 /* default_ret */ msg->next,
7236 /* on_error */ goto error);
7237 b_adv(chn->buf, ret);
7238 msg->next -= ret;
7239 if (!(chn->flags & CF_WROTE_DATA) || msg->sov > 0)
7240 msg->sov -= ret;
Christopher Faulet75e2eb62015-12-15 10:41:47 +0100[diff] [blame]7241 if (!HAS_DATA_FILTERS(s, chn))
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7242 msg->chunk_len -= channel_forward(chn, msg->chunk_len);
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]7243 waiting:
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7244 return 0;
7245
7246 chunk_parsing_error:
7247 if (msg->err_pos >= 0) {
7248 if (chn->flags & CF_ISRESP)
7249 http_capture_bad_message(&s->be->invalid_rep, s, msg,
7250 msg->msg_state, strm_fe(s));
7251 else
7252 http_capture_bad_message(&strm_fe(s)->invalid_req, s,
7253 msg, msg->msg_state, s->be);
7254 }
7255 error:
7256 return -1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7257}
7258
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7259
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7260/* Iterate the same filter through all request headers.
7261 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7262 * Since it can manage the switch to another backend, it updates the per-proxy
7263 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7264 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7265int apply_filter_to_req_headers(struct stream *s, struct channel *req, struct hdr_exp *exp)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7266{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7267 char *cur_ptr, *cur_end, *cur_next;
7268 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7269 struct http_txn *txn = s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7270 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7271 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]7272
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7273 last_hdr = 0;
7274
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7275 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7276 old_idx = 0;
7277
7278 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7279 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7280 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7281 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7282 (exp->action == ACT_ALLOW ||
7283 exp->action == ACT_DENY ||
7284 exp->action == ACT_TARPIT))
7285 return 0;
7286
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7287 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7288 if (!cur_idx)
7289 break;
7290
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7291 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7292 cur_ptr = cur_next;
7293 cur_end = cur_ptr + cur_hdr->len;
7294 cur_next = cur_end + cur_hdr->cr + 1;
7295
7296 /* Now we have one header between cur_ptr and cur_end,
7297 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7298 */
7299
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7300 if (regex_exec_match2(exp->preg, cur_ptr, cur_end-cur_ptr, MAX_MATCH, pmatch, 0)) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7301 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7302 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7303 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7304 last_hdr = 1;
7305 break;
7306
7307 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7308 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7309 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7310 break;
7311
7312 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7313 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7314 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7315 break;
7316
7317 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7318 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7319 if (trash.len < 0)
7320 return -1;
7321
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7322 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7323 /* FIXME: if the user adds a newline in the replacement, the
7324 * index will not be recalculated for now, and the new line
7325 * will not be counted as a new header.
7326 */
7327
7328 cur_end += delta;
7329 cur_next += delta;
7330 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7331 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7332 break;
7333
7334 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7335 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7336 cur_next += delta;
7337
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7338 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7339 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7340 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7341 cur_hdr->len = 0;
7342 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7343 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7344 break;
7345
7346 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7347 }
7348
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7349 /* keep the link from this header to next one in case of later
7350 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7351 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7352 old_idx = cur_idx;
7353 }
7354 return 0;
7355}
7356
7357
7358/* Apply the filter to the request line.
7359 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7360 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7361 * Since it can manage the switch to another backend, it updates the per-proxy
7362 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7363 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7364int apply_filter_to_req_line(struct stream *s, struct channel *req, struct hdr_exp *exp)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7365{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7366 char *cur_ptr, *cur_end;
7367 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7368 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7369 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7370
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7371 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7372 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7373 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7374 (exp->action == ACT_ALLOW ||
7375 exp->action == ACT_DENY ||
7376 exp->action == ACT_TARPIT))
7377 return 0;
7378 else if (exp->action == ACT_REMOVE)
7379 return 0;
7380
7381 done = 0;
7382
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7383 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7384 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7385
7386 /* Now we have the request line between cur_ptr and cur_end */
7387
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7388 if (regex_exec_match2(exp->preg, cur_ptr, cur_end-cur_ptr, MAX_MATCH, pmatch, 0)) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7389 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7390 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7391 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7392 done = 1;
7393 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7394
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7395 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7396 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7397 done = 1;
7398 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7399
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7400 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7401 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7402 done = 1;
7403 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7404
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7405 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7406 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7407 if (trash.len < 0)
7408 return -1;
7409
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7410 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7411 /* FIXME: if the user adds a newline in the replacement, the
7412 * index will not be recalculated for now, and the new line
7413 * will not be counted as a new header.
7414 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7415
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7416 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7417 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7418 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7419 HTTP_MSG_RQMETH,
7420 cur_ptr, cur_end + 1,
7421 NULL, NULL);
7422 if (unlikely(!cur_end))
7423 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7424
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7425 /* we have a full request and we know that we have either a CR
7426 * or an LF at <ptr>.
7427 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7428 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
7429 hdr_idx_set_start(&txn->hdr_idx, txn->req.sl.rq.l, *cur_end == '\r');
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7430 /* there is no point trying this regex on headers */
7431 return 1;
7432 }
7433 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7434 return done;
7435}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]7436
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7437
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7438
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7439/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7440 * Apply all the req filters of proxy <px> to all headers in buffer <req> of stream <s>.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7441 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7442 * unparsable request. Since it can manage the switch to another backend, it
7443 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7444 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7445int apply_filters_to_request(struct stream *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7446{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7447 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7448 struct http_txn *txn = s->txn;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7449 struct hdr_exp *exp;
7450
7451 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7452 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7453
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7454 /*
7455 * The interleaving of transformations and verdicts
7456 * makes it difficult to decide to continue or stop
7457 * the evaluation.
7458 */
7459
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7460 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
7461 break;
7462
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7463 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7464 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7465 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7466 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7467
7468 /* if this filter had a condition, evaluate it now and skip to
7469 * next filter if the condition does not match.
7470 */
7471 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7472 ret = acl_exec_cond(exp->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7473 ret = acl_pass(ret);
7474 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7475 ret = !ret;
7476
7477 if (!ret)
7478 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7479 }
7480
7481 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7482 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7483 if (unlikely(ret < 0))
7484 return -1;
7485
7486 if (likely(ret == 0)) {
7487 /* The filter did not match the request, it can be
7488 * iterated through all headers.
7489 */
Willy Tarreau34d4c3c2015-01-30 20:58:58 +0100[diff] [blame]7490 if (unlikely(apply_filter_to_req_headers(s, req, exp) < 0))
7491 return -1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7492 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7493 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7494 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7495}
7496
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7497
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7498/* Find the end of a cookie value contained between <s> and <e>. It works the
7499 * same way as with headers above except that the semi-colon also ends a token.
7500 * See RFC2965 for more information. Note that it requires a valid header to
7501 * return a valid result.
7502 */
7503char *find_cookie_value_end(char *s, const char *e)
7504{
7505 int quoted, qdpair;
7506
7507 quoted = qdpair = 0;
7508 for (; s < e; s++) {
7509 if (qdpair) qdpair = 0;
7510 else if (quoted) {
7511 if (*s == '\\') qdpair = 1;
7512 else if (*s == '"') quoted = 0;
7513 }
7514 else if (*s == '"') quoted = 1;
7515 else if (*s == ',' || *s == ';') return s;
7516 }
7517 return s;
7518}
7519
7520/* Delete a value in a header between delimiters <from> and <next> in buffer
7521 * <buf>. The number of characters displaced is returned, and the pointer to
7522 * the first delimiter is updated if required. The function tries as much as
7523 * possible to respect the following principles :
7524 * - replace <from> delimiter by the <next> one unless <from> points to a
7525 * colon, in which case <next> is simply removed
7526 * - set exactly one space character after the new first delimiter, unless
7527 * there are not enough characters in the block being moved to do so.
7528 * - remove unneeded spaces before the previous delimiter and after the new
7529 * one.
7530 *
7531 * It is the caller's responsibility to ensure that :
7532 * - <from> points to a valid delimiter or the colon ;
7533 * - <next> points to a valid delimiter or the final CR/LF ;
7534 * - there are non-space chars before <from> ;
7535 * - there is a CR/LF at or after <next>.
7536 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]7537int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7538{
7539 char *prev = *from;
7540
7541 if (*prev == ':') {
7542 /* We're removing the first value, preserve the colon and add a
7543 * space if possible.
7544 */
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7545 if (!HTTP_IS_CRLF(*next))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7546 next++;
7547 prev++;
7548 if (prev < next)
7549 *prev++ = ' ';
7550
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7551 while (HTTP_IS_SPHT(*next))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7552 next++;
7553 } else {
7554 /* Remove useless spaces before the old delimiter. */
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7555 while (HTTP_IS_SPHT(*(prev-1)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7556 prev--;
7557 *from = prev;
7558
7559 /* copy the delimiter and if possible a space if we're
7560 * not at the end of the line.
7561 */
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7562 if (!HTTP_IS_CRLF(*next)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7563 *prev++ = *next++;
7564 if (prev + 1 < next)
7565 *prev++ = ' ';
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7566 while (HTTP_IS_SPHT(*next))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7567 next++;
7568 }
7569 }
7570 return buffer_replace2(buf, prev, next, NULL, 0);
7571}
7572
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7573/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7574 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7575 * desirable to call it only when needed. This code is quite complex because
7576 * of the multiple very crappy and ambiguous syntaxes we have to support. it
7577 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7578 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7579void manage_client_side_cookies(struct stream *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7580{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7581 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7582 struct session *sess = s->sess;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7583 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7584 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7585 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
7586 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7587
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7588 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]7589 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7590 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7591
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7592 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7593 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7594 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7595
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7596 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7597 hdr_beg = hdr_next;
7598 hdr_end = hdr_beg + cur_hdr->len;
7599 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7600
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7601 /* We have one full header between hdr_beg and hdr_end, and the
7602 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7603 * "Cookie:" headers.
7604 */
7605
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7606 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7607 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7608 old_idx = cur_idx;
7609 continue;
7610 }
7611
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7612 del_from = NULL; /* nothing to be deleted */
7613 preserve_hdr = 0; /* assume we may kill the whole header */
7614
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7615 /* Now look for cookies. Conforming to RFC2109, we have to support
7616 * attributes whose name begin with a '$', and associate them with
7617 * the right cookie, if we want to delete this cookie.
7618 * So there are 3 cases for each cookie read :
7619 * 1) it's a special attribute, beginning with a '$' : ignore it.
7620 * 2) it's a server id cookie that we *MAY* want to delete : save
7621 * some pointers on it (last semi-colon, beginning of cookie...)
7622 * 3) it's an application cookie : we *MAY* have to delete a previous
7623 * "special" cookie.
7624 * At the end of loop, if a "special" cookie remains, we may have to
7625 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7626 * *MUST* delete it.
7627 *
7628 * Note: RFC2965 is unclear about the processing of spaces around
7629 * the equal sign in the ATTR=VALUE form. A careful inspection of
7630 * the RFC explicitly allows spaces before it, and not within the
7631 * tokens (attrs or values). An inspection of RFC2109 allows that
7632 * too but section 10.1.3 lets one think that spaces may be allowed
7633 * after the equal sign too, resulting in some (rare) buggy
7634 * implementations trying to do that. So let's do what servers do.
7635 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
7636 * allowed quoted strings in values, with any possible character
7637 * after a backslash, including control chars and delimitors, which
7638 * causes parsing to become ambiguous. Browsers also allow spaces
7639 * within values even without quotes.
7640 *
7641 * We have to keep multiple pointers in order to support cookie
7642 * removal at the beginning, middle or end of header without
7643 * corrupting the header. All of these headers are valid :
7644 *
7645 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
7646 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
7647 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
7648 * | | | | | | | | |
7649 * | | | | | | | | hdr_end <--+
7650 * | | | | | | | +--> next
7651 * | | | | | | +----> val_end
7652 * | | | | | +-----------> val_beg
7653 * | | | | +--------------> equal
7654 * | | | +----------------> att_end
7655 * | | +---------------------> att_beg
7656 * | +--------------------------> prev
7657 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7658 */
7659
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7660 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
7661 /* Iterate through all cookies on this line */
7662
7663 /* find att_beg */
7664 att_beg = prev + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7665 while (att_beg < hdr_end && HTTP_IS_SPHT(*att_beg))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7666 att_beg++;
7667
7668 /* find att_end : this is the first character after the last non
7669 * space before the equal. It may be equal to hdr_end.
7670 */
7671 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7672
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7673 while (equal < hdr_end) {
7674 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7675 break;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7676 if (HTTP_IS_SPHT(*equal++))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7677 continue;
7678 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7679 }
7680
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7681 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7682 * is between <att_beg> and <equal>, both may be identical.
7683 */
7684
7685 /* look for end of cookie if there is an equal sign */
7686 if (equal < hdr_end && *equal == '=') {
7687 /* look for the beginning of the value */
7688 val_beg = equal + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7689 while (val_beg < hdr_end && HTTP_IS_SPHT(*val_beg))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7690 val_beg++;
7691
7692 /* find the end of the value, respecting quotes */
7693 next = find_cookie_value_end(val_beg, hdr_end);
7694
7695 /* make val_end point to the first white space or delimitor after the value */
7696 val_end = next;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7697 while (val_end > val_beg && HTTP_IS_SPHT(*(val_end - 1)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7698 val_end--;
7699 } else {
7700 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7701 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7702
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7703 /* We have nothing to do with attributes beginning with '$'. However,
7704 * they will automatically be removed if a header before them is removed,
7705 * since they're supposed to be linked together.
7706 */
7707 if (*att_beg == '$')
7708 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7709
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7710 /* Ignore cookies with no equal sign */
7711 if (equal == next) {
7712 /* This is not our cookie, so we must preserve it. But if we already
7713 * scheduled another cookie for removal, we cannot remove the
7714 * complete header, but we can remove the previous block itself.
7715 */
7716 preserve_hdr = 1;
7717 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7718 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7719 val_end += delta;
7720 next += delta;
7721 hdr_end += delta;
7722 hdr_next += delta;
7723 cur_hdr->len += delta;
7724 http_msg_move_end(&txn->req, delta);
7725 prev = del_from;
7726 del_from = NULL;
7727 }
7728 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7729 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7730
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7731 /* if there are spaces around the equal sign, we need to
7732 * strip them otherwise we'll get trouble for cookie captures,
7733 * or even for rewrites. Since this happens extremely rarely,
7734 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7735 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7736 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7737 int stripped_before = 0;
7738 int stripped_after = 0;
7739
7740 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7741 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7742 equal += stripped_before;
7743 val_beg += stripped_before;
7744 }
7745
7746 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7747 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7748 val_beg += stripped_after;
7749 stripped_before += stripped_after;
7750 }
7751
7752 val_end += stripped_before;
7753 next += stripped_before;
7754 hdr_end += stripped_before;
7755 hdr_next += stripped_before;
7756 cur_hdr->len += stripped_before;
7757 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7758 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7759 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7760
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7761 /* First, let's see if we want to capture this cookie. We check
7762 * that we don't already have a client side cookie, because we
7763 * can only capture one. Also as an optimisation, we ignore
7764 * cookies shorter than the declared name.
7765 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7766 if (sess->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7767 (val_end - att_beg >= sess->fe->capture_namelen) &&
7768 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7769 int log_len = val_end - att_beg;
7770
7771 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7772 Alert("HTTP logging : out of memory.\n");
7773 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7774 if (log_len > sess->fe->capture_len)
7775 log_len = sess->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7776 memcpy(txn->cli_cookie, att_beg, log_len);
7777 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7778 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7779 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7780
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7781 /* Persistence cookies in passive, rewrite or insert mode have the
7782 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7783 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7784 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7785 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7786 * For cookies in prefix mode, the form is :
7787 *
7788 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7789 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7790 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
7791 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
7792 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7793 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7794
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7795 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7796 * have the server ID between val_beg and delim, and the original cookie between
7797 * delim+1 and val_end. Otherwise, delim==val_end :
7798 *
7799 * Cookie: NAME=SRV; # in all but prefix modes
7800 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7801 * | || || | |+-> next
7802 * | || || | +--> val_end
7803 * | || || +---------> delim
7804 * | || |+------------> val_beg
7805 * | || +-------------> att_end = equal
7806 * | |+-----------------> att_beg
7807 * | +------------------> prev
7808 * +-------------------------> hdr_beg
7809 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7810
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7811 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7812 for (delim = val_beg; delim < val_end; delim++)
7813 if (*delim == COOKIE_DELIM)
7814 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7815 } else {
7816 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7817 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7818 /* Now check if the cookie contains a date field, which would
7819 * appear after a vertical bar ('|') just after the server name
7820 * and before the delimiter.
7821 */
7822 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7823 if (vbar1) {
7824 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7825 * right is the last seen date. It is a base64 encoded
7826 * 30-bit value representing the UNIX date since the
7827 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7828 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7829 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7830 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7831 if (val_end - vbar1 >= 5) {
7832 val = b64tos30(vbar1);
7833 if (val > 0)
7834 txn->cookie_last_date = val << 2;
7835 }
7836 /* look for a second vertical bar */
7837 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7838 if (vbar1 && (val_end - vbar1 > 5)) {
7839 val = b64tos30(vbar1 + 1);
7840 if (val > 0)
7841 txn->cookie_first_date = val << 2;
7842 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7843 }
7844 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7845
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7846 /* if the cookie has an expiration date and the proxy wants to check
7847 * it, then we do that now. We first check if the cookie is too old,
7848 * then only if it has expired. We detect strict overflow because the
7849 * time resolution here is not great (4 seconds). Cookies with dates
7850 * in the future are ignored if their offset is beyond one day. This
7851 * allows an admin to fix timezone issues without expiring everyone
7852 * and at the same time avoids keeping unwanted side effects for too
7853 * long.
7854 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7855 if (txn->cookie_first_date && s->be->cookie_maxlife &&
7856 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7857 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7858 txn->flags &= ~TX_CK_MASK;
7859 txn->flags |= TX_CK_OLD;
7860 delim = val_beg; // let's pretend we have not found the cookie
7861 txn->cookie_first_date = 0;
7862 txn->cookie_last_date = 0;
7863 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7864 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
7865 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7866 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7867 txn->flags &= ~TX_CK_MASK;
7868 txn->flags |= TX_CK_EXPIRED;
7869 delim = val_beg; // let's pretend we have not found the cookie
7870 txn->cookie_first_date = 0;
7871 txn->cookie_last_date = 0;
7872 }
7873
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7874 /* Here, we'll look for the first running server which supports the cookie.
7875 * This allows to share a same cookie between several servers, for example
7876 * to dedicate backup servers to specific servers only.
7877 * However, to prevent clients from sticking to cookie-less backup server
7878 * when they have incidentely learned an empty cookie, we simply ignore
7879 * empty cookies and mark them as invalid.
7880 * The same behaviour is applied when persistence must be ignored.
7881 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7882 if ((delim == val_beg) || (s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7883 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7884
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7885 while (srv) {
7886 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7887 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7888 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7889 (s->be->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7890 (s->flags & SF_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7891 /* we found the server and we can use it */
7892 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7893 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7894 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7895 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7896 break;
7897 } else {
7898 /* we found a server, but it's down,
7899 * mark it as such and go on in case
7900 * another one is available.
7901 */
7902 txn->flags &= ~TX_CK_MASK;
7903 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7904 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7905 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7906 srv = srv->next;
7907 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7908
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7909 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7910 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7911 txn->flags &= ~TX_CK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7912 if ((s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7913 txn->flags |= TX_CK_UNUSED;
7914 else
7915 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7916 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7917
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7918 /* depending on the cookie mode, we may have to either :
7919 * - delete the complete cookie if we're in insert+indirect mode, so that
7920 * the server never sees it ;
7921 * - remove the server id from the cookie value, and tag the cookie as an
7922 * application cookie so that it does not get accidentely removed later,
7923 * if we're in cookie prefix mode
7924 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7925 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7926 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7927
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7928 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7929 val_end += delta;
7930 next += delta;
7931 hdr_end += delta;
7932 hdr_next += delta;
7933 cur_hdr->len += delta;
7934 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7935
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7936 del_from = NULL;
7937 preserve_hdr = 1; /* we want to keep this cookie */
7938 }
7939 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7940 (s->be->ck_opts & (PR_CK_INS | PR_CK_IND)) == (PR_CK_INS | PR_CK_IND)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7941 del_from = prev;
7942 }
7943 } else {
7944 /* This is not our cookie, so we must preserve it. But if we already
7945 * scheduled another cookie for removal, we cannot remove the
7946 * complete header, but we can remove the previous block itself.
7947 */
7948 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7949
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7950 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7951 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7952 if (att_beg >= del_from)
7953 att_beg += delta;
7954 if (att_end >= del_from)
7955 att_end += delta;
7956 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7957 val_end += delta;
7958 next += delta;
7959 hdr_end += delta;
7960 hdr_next += delta;
7961 cur_hdr->len += delta;
7962 http_msg_move_end(&txn->req, delta);
7963 prev = del_from;
7964 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7965 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7966 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7967
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7968 /* continue with next cookie on this header line */
7969 att_beg = next;
7970 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7971
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7972 /* There are no more cookies on this line.
7973 * We may still have one (or several) marked for deletion at the
7974 * end of the line. We must do this now in two ways :
7975 * - if some cookies must be preserved, we only delete from the
7976 * mark to the end of line ;
7977 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7978 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7979 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7980 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7981 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7982 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7983 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7984 cur_hdr->len += delta;
7985 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7986 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7987
7988 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7989 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7990 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7991 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7992 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7993 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7994 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7995 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7996 }
7997
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7998 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7999 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]8000 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8001}
8002
8003
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8004/* Iterate the same filter through all response headers contained in <rtr>.
8005 * Returns 1 if this filter can be stopped upon return, otherwise 0.
8006 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8007int apply_filter_to_resp_headers(struct stream *s, struct channel *rtr, struct hdr_exp *exp)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8008{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8009 char *cur_ptr, *cur_end, *cur_next;
8010 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8011 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8012 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8013 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8014
8015 last_hdr = 0;
8016
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8017 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8018 old_idx = 0;
8019
8020 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8021 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8022 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8023 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8024 (exp->action == ACT_ALLOW ||
8025 exp->action == ACT_DENY))
8026 return 0;
8027
8028 cur_idx = txn->hdr_idx.v[old_idx].next;
8029 if (!cur_idx)
8030 break;
8031
8032 cur_hdr = &txn->hdr_idx.v[cur_idx];
8033 cur_ptr = cur_next;
8034 cur_end = cur_ptr + cur_hdr->len;
8035 cur_next = cur_end + cur_hdr->cr + 1;
8036
8037 /* Now we have one header between cur_ptr and cur_end,
8038 * and the next header starts at cur_next.
8039 */
8040
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]8041 if (regex_exec_match2(exp->preg, cur_ptr, cur_end-cur_ptr, MAX_MATCH, pmatch, 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8042 switch (exp->action) {
8043 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8044 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8045 last_hdr = 1;
8046 break;
8047
8048 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8049 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8050 last_hdr = 1;
8051 break;
8052
8053 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8054 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
8055 if (trash.len < 0)
8056 return -1;
8057
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8058 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8059 /* FIXME: if the user adds a newline in the replacement, the
8060 * index will not be recalculated for now, and the new line
8061 * will not be counted as a new header.
8062 */
8063
8064 cur_end += delta;
8065 cur_next += delta;
8066 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8067 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8068 break;
8069
8070 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8071 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8072 cur_next += delta;
8073
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8074 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8075 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8076 txn->hdr_idx.used--;
8077 cur_hdr->len = 0;
8078 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8079 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8080 break;
8081
8082 }
8083 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8084
8085 /* keep the link from this header to next one in case of later
8086 * removal of next header.
8087 */
8088 old_idx = cur_idx;
8089 }
8090 return 0;
8091}
8092
8093
8094/* Apply the filter to the status line in the response buffer <rtr>.
8095 * Returns 0 if nothing has been done, 1 if the filter has been applied,
8096 * or -1 if a replacement resulted in an invalid status line.
8097 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8098int apply_filter_to_sts_line(struct stream *s, struct channel *rtr, struct hdr_exp *exp)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8099{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8100 char *cur_ptr, *cur_end;
8101 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8102 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8103 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8104
8105
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8106 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8107 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8108 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8109 (exp->action == ACT_ALLOW ||
8110 exp->action == ACT_DENY))
8111 return 0;
8112 else if (exp->action == ACT_REMOVE)
8113 return 0;
8114
8115 done = 0;
8116
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8117 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]8118 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8119
8120 /* Now we have the status line between cur_ptr and cur_end */
8121
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]8122 if (regex_exec_match2(exp->preg, cur_ptr, cur_end-cur_ptr, MAX_MATCH, pmatch, 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8123 switch (exp->action) {
8124 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8125 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8126 done = 1;
8127 break;
8128
8129 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8130 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8131 done = 1;
8132 break;
8133
8134 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8135 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
8136 if (trash.len < 0)
8137 return -1;
8138
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8139 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8140 /* FIXME: if the user adds a newline in the replacement, the
8141 * index will not be recalculated for now, and the new line
8142 * will not be counted as a new header.
8143 */
8144
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8145 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8146 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8147 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]8148 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8149 cur_ptr, cur_end + 1,
8150 NULL, NULL);
8151 if (unlikely(!cur_end))
8152 return -1;
8153
8154 /* we have a full respnse and we know that we have either a CR
8155 * or an LF at <ptr>.
8156 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8157 txn->status = strl2ui(rtr->buf->p + txn->rsp.sl.st.c, txn->rsp.sl.st.c_l);
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]8158 hdr_idx_set_start(&txn->hdr_idx, txn->rsp.sl.st.l, *cur_end == '\r');
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8159 /* there is no point trying this regex on headers */
8160 return 1;
8161 }
8162 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8163 return done;
8164}
8165
8166
8167
8168/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8169 * Apply all the resp filters of proxy <px> to all headers in buffer <rtr> of stream <s>.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8170 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
8171 * unparsable response.
8172 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8173int apply_filters_to_response(struct stream *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8174{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]8175 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8176 struct http_txn *txn = s->txn;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8177 struct hdr_exp *exp;
8178
8179 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8180 int ret;
8181
8182 /*
8183 * The interleaving of transformations and verdicts
8184 * makes it difficult to decide to continue or stop
8185 * the evaluation.
8186 */
8187
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8188 if (txn->flags & TX_SVDENY)
8189 break;
8190
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8191 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8192 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
8193 exp->action == ACT_PASS)) {
8194 exp = exp->next;
8195 continue;
8196 }
8197
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8198 /* if this filter had a condition, evaluate it now and skip to
8199 * next filter if the condition does not match.
8200 */
8201 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]8202 ret = acl_exec_cond(exp->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8203 ret = acl_pass(ret);
8204 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
8205 ret = !ret;
8206 if (!ret)
8207 continue;
8208 }
8209
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8210 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8211 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8212 if (unlikely(ret < 0))
8213 return -1;
8214
8215 if (likely(ret == 0)) {
8216 /* The filter did not match the response, it can be
8217 * iterated through all headers.
8218 */
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8219 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
8220 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8221 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8222 }
8223 return 0;
8224}
8225
8226
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8227/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]8228 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8229 * desirable to call it only when needed. This function is also used when we
8230 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8231 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8232void manage_server_side_cookies(struct stream *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8233{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8234 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8235 struct session *sess = s->sess;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8236 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8237 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8238 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8239 char *hdr_beg, *hdr_end, *hdr_next;
8240 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8241
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8242 /* Iterate through the headers.
8243 * we start with the start line.
8244 */
8245 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8246 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8247
8248 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
8249 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8250 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8251
8252 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8253 hdr_beg = hdr_next;
8254 hdr_end = hdr_beg + cur_hdr->len;
8255 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8256
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8257 /* We have one full header between hdr_beg and hdr_end, and the
8258 * next header starts at hdr_next. We're only interested in
8259 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8260 */
8261
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8262 is_cookie2 = 0;
8263 prev = hdr_beg + 10;
8264 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8265 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8266 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
8267 if (!val) {
8268 old_idx = cur_idx;
8269 continue;
8270 }
8271 is_cookie2 = 1;
8272 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8273 }
8274
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8275 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
8276 * <prev> points to the colon.
8277 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8278 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8279
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8280 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
8281 * check-cache is enabled) and we are not interested in checking
8282 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]8283 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]8284 if (s->be->cookie_name == NULL && sess->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8285 return;
8286
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8287 /* OK so now we know we have to process this response cookie.
8288 * The format of the Set-Cookie header is slightly different
8289 * from the format of the Cookie header in that it does not
8290 * support the comma as a cookie delimiter (thus the header
8291 * cannot be folded) because the Expires attribute described in
8292 * the original Netscape's spec may contain an unquoted date
8293 * with a comma inside. We have to live with this because
8294 * many browsers don't support Max-Age and some browsers don't
8295 * support quoted strings. However the Set-Cookie2 header is
8296 * clean.
8297 *
8298 * We have to keep multiple pointers in order to support cookie
8299 * removal at the beginning, middle or end of header without
8300 * corrupting the header (in case of set-cookie2). A special
8301 * pointer, <scav> points to the beginning of the set-cookie-av
8302 * fields after the first semi-colon. The <next> pointer points
8303 * either to the end of line (set-cookie) or next unquoted comma
8304 * (set-cookie2). All of these headers are valid :
8305 *
8306 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
8307 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8308 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8309 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
8310 * | | | | | | | | | |
8311 * | | | | | | | | +-> next hdr_end <--+
8312 * | | | | | | | +------------> scav
8313 * | | | | | | +--------------> val_end
8314 * | | | | | +--------------------> val_beg
8315 * | | | | +----------------------> equal
8316 * | | | +------------------------> att_end
8317 * | | +----------------------------> att_beg
8318 * | +------------------------------> prev
8319 * +-----------------------------------------> hdr_beg
8320 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8321
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8322 for (; prev < hdr_end; prev = next) {
8323 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8324
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8325 /* find att_beg */
8326 att_beg = prev + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]8327 while (att_beg < hdr_end && HTTP_IS_SPHT(*att_beg))
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8328 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8329
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8330 /* find att_end : this is the first character after the last non
8331 * space before the equal. It may be equal to hdr_end.
8332 */
8333 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8334
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8335 while (equal < hdr_end) {
8336 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
8337 break;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]8338 if (HTTP_IS_SPHT(*equal++))
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8339 continue;
8340 att_end = equal;
8341 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8342
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8343 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8344 * is between <att_beg> and <equal>, both may be identical.
8345 */
8346
8347 /* look for end of cookie if there is an equal sign */
8348 if (equal < hdr_end && *equal == '=') {
8349 /* look for the beginning of the value */
8350 val_beg = equal + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]8351 while (val_beg < hdr_end && HTTP_IS_SPHT(*val_beg))
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8352 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8353
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8354 /* find the end of the value, respecting quotes */
8355 next = find_cookie_value_end(val_beg, hdr_end);
8356
8357 /* make val_end point to the first white space or delimitor after the value */
8358 val_end = next;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]8359 while (val_end > val_beg && HTTP_IS_SPHT(*(val_end - 1)))
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8360 val_end--;
8361 } else {
8362 /* <equal> points to next comma, semi-colon or EOL */
8363 val_beg = val_end = next = equal;
8364 }
8365
8366 if (next < hdr_end) {
8367 /* Set-Cookie2 supports multiple cookies, and <next> points to
8368 * a colon or semi-colon before the end. So skip all attr-value
8369 * pairs and look for the next comma. For Set-Cookie, since
8370 * commas are permitted in values, skip to the end.
8371 */
8372 if (is_cookie2)
8373 next = find_hdr_value_end(next, hdr_end);
8374 else
8375 next = hdr_end;
8376 }
8377
8378 /* Now everything is as on the diagram above */
8379
8380 /* Ignore cookies with no equal sign */
8381 if (equal == val_end)
8382 continue;
8383
8384 /* If there are spaces around the equal sign, we need to
8385 * strip them otherwise we'll get trouble for cookie captures,
8386 * or even for rewrites. Since this happens extremely rarely,
8387 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8388 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8389 if (unlikely(att_end != equal || val_beg > equal + 1)) {
8390 int stripped_before = 0;
8391 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8392
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8393 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8394 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8395 equal += stripped_before;
8396 val_beg += stripped_before;
8397 }
8398
8399 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8400 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8401 val_beg += stripped_after;
8402 stripped_before += stripped_after;
8403 }
8404
8405 val_end += stripped_before;
8406 next += stripped_before;
8407 hdr_end += stripped_before;
8408 hdr_next += stripped_before;
8409 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]8410 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8411 }
8412
8413 /* First, let's see if we want to capture this cookie. We check
8414 * that we don't already have a server side cookie, because we
8415 * can only capture one. Also as an optimisation, we ignore
8416 * cookies shorter than the declared name.
8417 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8418 if (sess->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]8419 txn->srv_cookie == NULL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8420 (val_end - att_beg >= sess->fe->capture_namelen) &&
8421 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8422 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]8423 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8424 Alert("HTTP logging : out of memory.\n");
8425 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8426 else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8427 if (log_len > sess->fe->capture_len)
8428 log_len = sess->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8429 memcpy(txn->srv_cookie, att_beg, log_len);
8430 txn->srv_cookie[log_len] = 0;
8431 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8432 }
8433
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8434 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8435 /* now check if we need to process it for persistence */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8436 if (!(s->flags & SF_IGNORE_PRST) &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8437 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
8438 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8439 /* assume passive cookie by default */
8440 txn->flags &= ~TX_SCK_MASK;
8441 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8442
8443 /* If the cookie is in insert mode on a known server, we'll delete
8444 * this occurrence because we'll insert another one later.
8445 * We'll delete it too if the "indirect" option is set and we're in
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8446 * a direct access.
8447 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8448 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]8449 /* The "preserve" flag was set, we don't want to touch the
8450 * server's cookie.
8451 */
8452 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8453 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8454 ((s->flags & SF_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8455 /* this cookie must be deleted */
8456 if (*prev == ':' && next == hdr_end) {
8457 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8458 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8459 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8460 txn->hdr_idx.used--;
8461 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8462 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8463 hdr_next += delta;
8464 http_msg_move_end(&txn->rsp, delta);
8465 /* note: while both invalid now, <next> and <hdr_end>
8466 * are still equal, so the for() will stop as expected.
8467 */
8468 } else {
8469 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8470 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8471 next = prev;
8472 hdr_end += delta;
8473 hdr_next += delta;
8474 cur_hdr->len += delta;
8475 http_msg_move_end(&txn->rsp, delta);
8476 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8477 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8478 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8479 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8480 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8481 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8482 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8483 * with this server since we know it.
8484 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8485 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8486 next += delta;
8487 hdr_end += delta;
8488 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8489 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8490 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8491
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8492 txn->flags &= ~TX_SCK_MASK;
8493 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8494 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8495 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8496 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8497 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8498 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8499 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8500 next += delta;
8501 hdr_end += delta;
8502 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8503 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8504 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8505
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8506 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8507 txn->flags &= ~TX_SCK_MASK;
8508 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8509 }
8510 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8511 /* that's done for this cookie, check the next one on the same
8512 * line when next != hdr_end (only if is_cookie2).
8513 */
8514 }
8515 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8516 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8517 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8518}
8519
8520
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8521/*
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8522 * Check if response is cacheable or not. Updates s->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8523 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8524void check_response_for_cacheability(struct stream *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8525{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8526 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8527 char *p1, *p2;
8528
8529 char *cur_ptr, *cur_end, *cur_next;
8530 int cur_idx;
8531
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]8532 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8533 return;
8534
8535 /* Iterate through the headers.
8536 * we start with the start line.
8537 */
8538 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8539 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8540
8541 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
8542 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8543 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8544
8545 cur_hdr = &txn->hdr_idx.v[cur_idx];
8546 cur_ptr = cur_next;
8547 cur_end = cur_ptr + cur_hdr->len;
8548 cur_next = cur_end + cur_hdr->cr + 1;
8549
8550 /* We have one full header between cur_ptr and cur_end, and the
8551 * next header starts at cur_next. We're only interested in
8552 * "Cookie:" headers.
8553 */
8554
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8555 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
8556 if (val) {
8557 if ((cur_end - (cur_ptr + val) >= 8) &&
8558 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
8559 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
8560 return;
8561 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8562 }
8563
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8564 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
8565 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8566 continue;
8567
8568 /* OK, right now we know we have a cache-control header at cur_ptr */
8569
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8570 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8571
8572 if (p1 >= cur_end) /* no more info */
8573 continue;
8574
8575 /* p1 is at the beginning of the value */
8576 p2 = p1;
8577
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]8578 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8579 p2++;
8580
8581 /* we have a complete value between p1 and p2 */
8582 if (p2 < cur_end && *p2 == '=') {
8583 /* we have something of the form no-cache="set-cookie" */
8584 if ((cur_end - p1 >= 21) &&
8585 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
8586 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8587 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8588 continue;
8589 }
8590
8591 /* OK, so we know that either p2 points to the end of string or to a comma */
8592 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8593 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8594 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8595 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8596 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8597 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8598 return;
8599 }
8600
8601 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8602 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8603 continue;
8604 }
8605 }
8606}
8607
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8608
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8609/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8610 * In a GET, HEAD or POST request, check if the requested URI matches the stats uri
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8611 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8612 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8613 * It is assumed that the request is either a HEAD, GET, or POST and that the
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8614 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8615 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8616 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8617 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8618int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8619{
8620 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8621 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8622 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8623
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8624 if (!uri_auth)
8625 return 0;
8626
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8627 if (txn->meth != HTTP_METH_GET && txn->meth != HTTP_METH_HEAD && txn->meth != HTTP_METH_POST)
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8628 return 0;
8629
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8630 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8631 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8632 return 0;
8633
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8634 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8635 return 0;
8636
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8637 return 1;
8638}
8639
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8640/*
8641 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8642 * By default it tries to report the error position as msg->err_pos. However if
8643 * this one is not set, it will then report msg->next, which is the last known
8644 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8645 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8646 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8647void http_capture_bad_message(struct error_snapshot *es, struct stream *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8648 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8649 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8650{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8651 struct session *sess = strm_sess(s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8652 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8653 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8654
Willy Tarreauf3764b72016-03-31 13:45:10 +0200[diff] [blame]8655 es->len = MIN(chn->buf->i, global.tune.bufsize);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8656 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8657 len1 = MIN(len1, es->len);
8658 len2 = es->len - len1; /* remaining data if buffer wraps */
8659
Willy Tarreauf3764b72016-03-31 13:45:10 +0200[diff] [blame]8660 if (!es->buf)
8661 es->buf = malloc(global.tune.bufsize);
8662
8663 if (es->buf) {
8664 memcpy(es->buf, chn->buf->p, len1);
8665 if (len2)
8666 memcpy(es->buf + len1, chn->buf->data, len2);
8667 }
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8668
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8669 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8670 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8671 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8672 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8673
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8674 es->when = date; // user-visible date
8675 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8676 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8677 es->oe = other_end;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8678 if (objt_conn(sess->origin))
8679 es->src = __objt_conn(sess->origin)->addr.from;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8680 else
8681 memset(&es->src, 0, sizeof(es->src));
8682
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8683 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8684 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8685 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8686 es->s_flags = s->flags;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8687 es->t_flags = s->txn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8688 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8689 es->b_out = chn->buf->o;
8690 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8691 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8692 es->m_clen = msg->chunk_len;
8693 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8694}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8695
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8696/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8697 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8698 * performed over the whole headers. Otherwise it must contain a valid header
8699 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8700 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8701 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8702 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8703 * -1. The value fetch stops at commas, so this function is suited for use with
8704 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8705 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8706 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8707unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8708 struct hdr_idx *idx, int occ,
8709 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8710{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8711 struct hdr_ctx local_ctx;
8712 char *ptr_hist[MAX_HDR_HISTORY];
8713 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8714 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8715 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8716
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8717 if (!ctx) {
8718 local_ctx.idx = 0;
8719 ctx = &local_ctx;
8720 }
8721
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8722 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8723 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8724 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8725 occ--;
8726 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8727 *vptr = ctx->line + ctx->val;
8728 *vlen = ctx->vlen;
8729 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8730 }
8731 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8732 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8733 }
8734
8735 /* negative occurrence, we scan all the list then walk back */
8736 if (-occ > MAX_HDR_HISTORY)
8737 return 0;
8738
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8739 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8740 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8741 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8742 len_hist[hist_ptr] = ctx->vlen;
8743 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8744 hist_ptr = 0;
8745 found++;
8746 }
8747 if (-occ > found)
8748 return 0;
8749 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8750 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8751 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8752 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8753 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8754 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8755 if (hist_ptr >= MAX_HDR_HISTORY)
8756 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8757 *vptr = ptr_hist[hist_ptr];
8758 *vlen = len_hist[hist_ptr];
8759 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8760}
8761
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8762/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8763 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8764 * performed over the whole headers. Otherwise it must contain a valid header
8765 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8766 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8767 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8768 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8769 * -1. This function differs from http_get_hdr() in that it only returns full
8770 * line header values and does not stop at commas.
8771 * The return value is 0 if nothing was found, or non-zero otherwise.
8772 */
8773unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8774 struct hdr_idx *idx, int occ,
8775 struct hdr_ctx *ctx, char **vptr, int *vlen)
8776{
8777 struct hdr_ctx local_ctx;
8778 char *ptr_hist[MAX_HDR_HISTORY];
8779 int len_hist[MAX_HDR_HISTORY];
8780 unsigned int hist_ptr;
8781 int found;
8782
8783 if (!ctx) {
8784 local_ctx.idx = 0;
8785 ctx = &local_ctx;
8786 }
8787
8788 if (occ >= 0) {
8789 /* search from the beginning */
8790 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8791 occ--;
8792 if (occ <= 0) {
8793 *vptr = ctx->line + ctx->val;
8794 *vlen = ctx->vlen;
8795 return 1;
8796 }
8797 }
8798 return 0;
8799 }
8800
8801 /* negative occurrence, we scan all the list then walk back */
8802 if (-occ > MAX_HDR_HISTORY)
8803 return 0;
8804
8805 found = hist_ptr = 0;
8806 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8807 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8808 len_hist[hist_ptr] = ctx->vlen;
8809 if (++hist_ptr >= MAX_HDR_HISTORY)
8810 hist_ptr = 0;
8811 found++;
8812 }
8813 if (-occ > found)
8814 return 0;
Nenad Merdanovic69ad4b92016-03-29 13:14:30 +0200[diff] [blame]8815
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8816 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
Nenad Merdanovic69ad4b92016-03-29 13:14:30 +0200[diff] [blame]8817 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8818 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8819 * to remain in the 0..9 range.
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8820 */
Nenad Merdanovic69ad4b92016-03-29 13:14:30 +0200[diff] [blame]8821 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8822 if (hist_ptr >= MAX_HDR_HISTORY)
8823 hist_ptr -= MAX_HDR_HISTORY;
8824 *vptr = ptr_hist[hist_ptr];
8825 *vlen = len_hist[hist_ptr];
8826 return 1;
8827}
8828
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8829/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8830 * Print a debug line with a header. Always stop at the first CR or LF char,
8831 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8832 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8833 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8834void debug_hdr(const char *dir, struct stream *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8835{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8836 struct session *sess = strm_sess(s);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8837 int max;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8838
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8839 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8840 dir,
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8841 objt_conn(sess->origin) ? (unsigned short)objt_conn(sess->origin)->t.sock.fd : -1,
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]8842 objt_conn(s->si[1].end) ? (unsigned short)objt_conn(s->si[1].end)->t.sock.fd : -1);
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8843
8844 for (max = 0; start + max < end; max++)
8845 if (start[max] == '\r' || start[max] == '\n')
8846 break;
8847
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8848 UBOUND(max, trash.size - trash.len - 3);
8849 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8850 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8851 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8852}
8853
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8854
8855/* Allocate a new HTTP transaction for stream <s> unless there is one already.
8856 * The hdr_idx is allocated as well. In case of allocation failure, everything
8857 * allocated is freed and NULL is returned. Otherwise the new transaction is
8858 * assigned to the stream and returned.
8859 */
8860struct http_txn *http_alloc_txn(struct stream *s)
8861{
8862 struct http_txn *txn = s->txn;
8863
8864 if (txn)
8865 return txn;
8866
8867 txn = pool_alloc2(pool2_http_txn);
8868 if (!txn)
8869 return txn;
8870
8871 txn->hdr_idx.size = global.tune.max_http_hdr;
8872 txn->hdr_idx.v = pool_alloc2(pool2_hdr_idx);
8873 if (!txn->hdr_idx.v) {
8874 pool_free2(pool2_http_txn, txn);
8875 return NULL;
8876 }
8877
8878 s->txn = txn;
8879 return txn;
8880}
8881
Thierry FOURNIERfd50f0b2015-09-25 18:53:18 +0200[diff] [blame]8882void http_txn_reset_req(struct http_txn *txn)
8883{
8884 txn->req.flags = 0;
8885 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
8886 txn->req.next = 0;
8887 txn->req.chunk_len = 0LL;
8888 txn->req.body_len = 0LL;
8889 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8890}
8891
8892void http_txn_reset_res(struct http_txn *txn)
8893{
8894 txn->rsp.flags = 0;
8895 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
8896 txn->rsp.next = 0;
8897 txn->rsp.chunk_len = 0LL;
8898 txn->rsp.body_len = 0LL;
8899 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
8900}
8901
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8902/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8903 * Initialize a new HTTP transaction for stream <s>. It is assumed that all
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8904 * the required fields are properly allocated and that we only need to (re)init
8905 * them. This should be used before processing any new request.
8906 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8907void http_init_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8908{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8909 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8910 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8911
8912 txn->flags = 0;
8913 txn->status = -1;
8914
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8915 txn->cookie_first_date = 0;
8916 txn->cookie_last_date = 0;
8917
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8918 txn->srv_cookie = NULL;
8919 txn->cli_cookie = NULL;
8920 txn->uri = NULL;
8921
Thierry FOURNIERfd50f0b2015-09-25 18:53:18 +0200[diff] [blame]8922 http_txn_reset_req(txn);
8923 http_txn_reset_res(txn);
8924
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8925 txn->req.chn = &s->req;
8926 txn->rsp.chn = &s->res;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8927
8928 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8929
8930 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8931 if (fe->options2 & PR_O2_REQBUG_OK)
8932 txn->req.err_pos = -1; /* let buggy requests pass */
8933
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8934 if (txn->hdr_idx.v)
8935 hdr_idx_init(&txn->hdr_idx);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]8936
8937 vars_init(&s->vars_txn, SCOPE_TXN);
8938 vars_init(&s->vars_reqres, SCOPE_REQ);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8939}
8940
8941/* to be used at the end of a transaction */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8942void http_end_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8943{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8944 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8945 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8946
8947 /* these ones will have been dynamically allocated */
8948 pool_free2(pool2_requri, txn->uri);
8949 pool_free2(pool2_capture, txn->cli_cookie);
8950 pool_free2(pool2_capture, txn->srv_cookie);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8951 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8952
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8953 s->unique_id = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8954 txn->uri = NULL;
8955 txn->srv_cookie = NULL;
8956 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8957
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8958 if (s->req_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8959 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8960 for (h = fe->req_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8961 pool_free2(h->pool, s->req_cap[h->index]);
8962 memset(s->req_cap, 0, fe->nb_req_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8963 }
8964
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8965 if (s->res_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8966 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8967 for (h = fe->rsp_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8968 pool_free2(h->pool, s->res_cap[h->index]);
8969 memset(s->res_cap, 0, fe->nb_rsp_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8970 }
8971
Willy Tarreau6204cd92016-03-10 16:33:04 +0100[diff] [blame]8972 vars_prune(&s->vars_txn, s->sess, s);
8973 vars_prune(&s->vars_reqres, s->sess, s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8974}
8975
8976/* to be used at the end of a transaction to prepare a new one */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8977void http_reset_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8978{
8979 http_end_txn(s);
8980 http_init_txn(s);
8981
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]8982 /* reinitialise the current rule list pointer to NULL. We are sure that
8983 * any rulelist match the NULL pointer.
8984 */
8985 s->current_rule_list = NULL;
8986
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8987 s->be = strm_fe(s);
8988 s->logs.logwait = strm_fe(s)->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8989 s->logs.level = 0;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8990 stream_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8991 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8992 /* re-init store persistence */
8993 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]8994 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8995
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8996 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8997
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8998 s->req.flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8999
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]9000 /* We must trim any excess data from the response buffer, because we
9001 * may have blocked an invalid response from a server that we don't
9002 * want to accidentely forward once we disable the analysers, nor do
9003 * we want those data to come along with next response. A typical
9004 * example of such data would be from a buggy server responding to
9005 * a HEAD with some data, or sending more than the advertised
9006 * content-length.
9007 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9008 if (unlikely(s->res.buf->i))
9009 s->res.buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]9010
Christopher Fauletc0c672a2017-03-28 11:51:33 +0200[diff] [blame]9011 /* Now we can realign the response buffer */
9012 buffer_realign(s->res.buf);
9013
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9014 s->req.rto = strm_fe(s)->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9015 s->req.wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9016
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9017 s->res.rto = TICK_ETERNITY;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9018 s->res.wto = strm_fe(s)->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9019
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9020 s->req.rex = TICK_ETERNITY;
9021 s->req.wex = TICK_ETERNITY;
9022 s->req.analyse_exp = TICK_ETERNITY;
9023 s->res.rex = TICK_ETERNITY;
9024 s->res.wex = TICK_ETERNITY;
9025 s->res.analyse_exp = TICK_ETERNITY;
Hongbo Longe39683c2017-03-10 18:41:51 +0100[diff] [blame]9026 s->si[1].hcto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9027}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]9028
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9029void free_http_res_rules(struct list *r)
9030{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9031 struct act_rule *tr, *pr;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9032
9033 list_for_each_entry_safe(pr, tr, r, list) {
9034 LIST_DEL(&pr->list);
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9035 regex_free(&pr->arg.hdr_add.re);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9036 free(pr);
9037 }
9038}
9039
9040void free_http_req_rules(struct list *r)
9041{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9042 struct act_rule *tr, *pr;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9043
9044 list_for_each_entry_safe(pr, tr, r, list) {
9045 LIST_DEL(&pr->list);
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9046 if (pr->action == ACT_HTTP_REQ_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9047 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9048
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9049 regex_free(&pr->arg.hdr_add.re);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9050 free(pr);
9051 }
9052}
9053
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9054/* parse an "http-request" rule */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9055struct act_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9056{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9057 struct act_rule *rule;
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]9058 struct action_kw *custom = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9059 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9060 char *error;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9061
Vincent Bernat02779b62016-04-03 13:48:43 +0200[diff] [blame]9062 rule = calloc(1, sizeof(*rule));
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9063 if (!rule) {
9064 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9065 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9066 }
9067
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9068 if (!strcmp(args[0], "allow")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9069 rule->action = ACT_ACTION_ALLOW;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9070 cur_arg = 1;
Jarno Huuskonen800d1762017-03-06 14:56:36 +0200[diff] [blame]9071 } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block") || !strcmp(args[0], "tarpit")) {
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9072 int code;
9073 int hc;
9074
Jarno Huuskonen800d1762017-03-06 14:56:36 +0200[diff] [blame]9075 if (!strcmp(args[0], "tarpit")) {
9076 rule->action = ACT_HTTP_REQ_TARPIT;
9077 rule->deny_status = HTTP_ERR_500;
9078 }
9079 else {
9080 rule->action = ACT_ACTION_DENY;
9081 rule->deny_status = HTTP_ERR_403;
9082 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9083 cur_arg = 1;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9084 if (strcmp(args[cur_arg], "deny_status") == 0) {
9085 cur_arg++;
9086 if (!args[cur_arg]) {
9087 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing status code.\n",
9088 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9089 goto out_err;
9090 }
9091
9092 code = atol(args[cur_arg]);
9093 cur_arg++;
9094 for (hc = 0; hc < HTTP_ERR_SIZE; hc++) {
9095 if (http_err_codes[hc] == code) {
9096 rule->deny_status = hc;
9097 break;
9098 }
9099 }
9100
9101 if (hc >= HTTP_ERR_SIZE) {
Jarno Huuskonen800d1762017-03-06 14:56:36 +0200[diff] [blame]9102 Warning("parsing [%s:%d] : status code %d not handled, using default code %d.\n",
9103 file, linenum, code, http_err_codes[rule->deny_status]);
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9104 }
9105 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9106 } else if (!strcmp(args[0], "auth")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9107 rule->action = ACT_HTTP_REQ_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9108 cur_arg = 1;
9109
9110 while(*args[cur_arg]) {
9111 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9112 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9113 cur_arg+=2;
9114 continue;
9115 } else
9116 break;
9117 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9118 } else if (!strcmp(args[0], "set-nice")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9119 rule->action = ACT_HTTP_SET_NICE;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9120 cur_arg = 1;
9121
9122 if (!*args[cur_arg] ||
9123 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9124 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
9125 file, linenum, args[0]);
9126 goto out_err;
9127 }
9128 rule->arg.nice = atoi(args[cur_arg]);
9129 if (rule->arg.nice < -1024)
9130 rule->arg.nice = -1024;
9131 else if (rule->arg.nice > 1024)
9132 rule->arg.nice = 1024;
9133 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9134 } else if (!strcmp(args[0], "set-tos")) {
9135#ifdef IP_TOS
9136 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9137 rule->action = ACT_HTTP_SET_TOS;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9138 cur_arg = 1;
9139
9140 if (!*args[cur_arg] ||
9141 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9142 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
9143 file, linenum, args[0]);
9144 goto out_err;
9145 }
9146
9147 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9148 if (err && *err != '\0') {
9149 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
9150 file, linenum, err, args[0]);
9151 goto out_err;
9152 }
9153 cur_arg++;
9154#else
9155 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9156 goto out_err;
9157#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9158 } else if (!strcmp(args[0], "set-mark")) {
9159#ifdef SO_MARK
9160 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9161 rule->action = ACT_HTTP_SET_MARK;
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9162 cur_arg = 1;
9163
9164 if (!*args[cur_arg] ||
9165 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9166 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
9167 file, linenum, args[0]);
9168 goto out_err;
9169 }
9170
9171 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9172 if (err && *err != '\0') {
9173 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
9174 file, linenum, err, args[0]);
9175 goto out_err;
9176 }
9177 cur_arg++;
9178 global.last_checks |= LSTCHK_NETADM;
9179#else
9180 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9181 goto out_err;
9182#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9183 } else if (!strcmp(args[0], "set-log-level")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9184 rule->action = ACT_HTTP_SET_LOGL;
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9185 cur_arg = 1;
9186
9187 if (!*args[cur_arg] ||
9188 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9189 bad_log_level:
9190 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
9191 file, linenum, args[0]);
9192 goto out_err;
9193 }
9194 if (strcmp(args[cur_arg], "silent") == 0)
9195 rule->arg.loglevel = -1;
9196 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
9197 goto bad_log_level;
9198 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9199 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9200 rule->action = *args[0] == 'a' ? ACT_HTTP_ADD_HDR : ACT_HTTP_SET_HDR;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9201 cur_arg = 1;
9202
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]9203 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9204 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9205 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9206 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9207 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9208 }
9209
9210 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9211 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9212 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]9213
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9214 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9215 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9216 if (!parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9217 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9218 Alert("parsing [%s:%d]: 'http-request %s': %s.\n",
9219 file, linenum, args[0], error);
9220 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9221 goto out_err;
9222 }
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9223 free(proxy->conf.lfs_file);
9224 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9225 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9226 cur_arg += 2;
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9227 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9228 rule->action = args[0][8] == 'h' ? ACT_HTTP_REPLACE_HDR : ACT_HTTP_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9229 cur_arg = 1;
9230
9231 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann92df3702014-06-24 11:10:00 +0200[diff] [blame]9232 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9233 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
9234 file, linenum, args[0]);
9235 goto out_err;
9236 }
9237
9238 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9239 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9240 LIST_INIT(&rule->arg.hdr_add.fmt);
9241
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9242 error = NULL;
9243 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9244 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9245 args[cur_arg + 1], error);
9246 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9247 goto out_err;
9248 }
9249
9250 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9251 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9252 if (!parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9253 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9254 Alert("parsing [%s:%d]: 'http-request %s': %s.\n",
9255 file, linenum, args[0], error);
9256 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9257 goto out_err;
9258 }
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9259
9260 free(proxy->conf.lfs_file);
9261 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9262 proxy->conf.lfs_line = proxy->conf.args.line;
9263 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9264 } else if (strcmp(args[0], "del-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9265 rule->action = ACT_HTTP_DEL_HDR;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9266 cur_arg = 1;
9267
9268 if (!*args[cur_arg] ||
9269 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9270 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9271 file, linenum, args[0]);
9272 goto out_err;
9273 }
9274
9275 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9276 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9277
9278 proxy->conf.args.ctx = ARGC_HRQ;
9279 free(proxy->conf.lfs_file);
9280 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9281 proxy->conf.lfs_line = proxy->conf.args.line;
9282 cur_arg += 1;
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9283 } else if (strncmp(args[0], "track-sc", 8) == 0 &&
9284 args[0][9] == '\0' && args[0][8] >= '0' &&
Willy Tarreaue1cfc1f2014-10-17 11:53:05 +0200[diff] [blame]9285 args[0][8] < '0' + MAX_SESS_STKCTR) { /* track-sc 0..9 */
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9286 struct sample_expr *expr;
9287 unsigned int where;
9288 char *err = NULL;
9289
9290 cur_arg = 1;
9291 proxy->conf.args.ctx = ARGC_TRK;
9292
9293 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9294 if (!expr) {
9295 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9296 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9297 free(err);
9298 goto out_err;
9299 }
9300
9301 where = 0;
9302 if (proxy->cap & PR_CAP_FE)
9303 where |= SMP_VAL_FE_HRQ_HDR;
9304 if (proxy->cap & PR_CAP_BE)
9305 where |= SMP_VAL_BE_HRQ_HDR;
9306
9307 if (!(expr->fetch->val & where)) {
9308 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule :"
9309 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9310 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9311 args[cur_arg-1], sample_src_names(expr->fetch->use));
9312 free(expr);
9313 goto out_err;
9314 }
9315
9316 if (strcmp(args[cur_arg], "table") == 0) {
9317 cur_arg++;
9318 if (!args[cur_arg]) {
9319 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing table name.\n",
9320 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9321 free(expr);
9322 goto out_err;
9323 }
9324 /* we copy the table name for now, it will be resolved later */
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]9325 rule->arg.trk_ctr.table.n = strdup(args[cur_arg]);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9326 cur_arg++;
9327 }
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]9328 rule->arg.trk_ctr.expr = expr;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9329 rule->action = ACT_ACTION_TRK_SC0 + args[0][8] - '0';
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9330 } else if (strcmp(args[0], "redirect") == 0) {
9331 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]9332 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9333
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9334 if ((redir = http_parse_redirect_rule(file, linenum, proxy, (const char **)args + 1, &errmsg, 1, 0)) == NULL) {
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9335 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9336 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9337 goto out_err;
9338 }
9339
9340 /* this redirect rule might already contain a parsed condition which
9341 * we'll pass to the http-request rule.
9342 */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9343 rule->action = ACT_HTTP_REDIR;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9344 rule->arg.redir = redir;
9345 rule->cond = redir->cond;
9346 redir->cond = NULL;
9347 cur_arg = 2;
9348 return rule;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9349 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9350 /* http-request add-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9351 rule->action = ACT_HTTP_ADD_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9352 /*
9353 * '+ 8' for 'add-acl('
9354 * '- 9' for 'add-acl(' + trailing ')'
9355 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9356 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9357
9358 cur_arg = 1;
9359
9360 if (!*args[cur_arg] ||
9361 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9362 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9363 file, linenum, args[0]);
9364 goto out_err;
9365 }
9366
9367 LIST_INIT(&rule->arg.map.key);
9368 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9369 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9370 if (!parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9371 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9372 Alert("parsing [%s:%d]: 'http-request %s': %s.\n",
9373 file, linenum, args[0], error);
9374 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9375 goto out_err;
9376 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9377 free(proxy->conf.lfs_file);
9378 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9379 proxy->conf.lfs_line = proxy->conf.args.line;
9380 cur_arg += 1;
9381 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9382 /* http-request del-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9383 rule->action = ACT_HTTP_DEL_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9384 /*
9385 * '+ 8' for 'del-acl('
9386 * '- 9' for 'del-acl(' + trailing ')'
9387 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9388 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9389
9390 cur_arg = 1;
9391
9392 if (!*args[cur_arg] ||
9393 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9394 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9395 file, linenum, args[0]);
9396 goto out_err;
9397 }
9398
9399 LIST_INIT(&rule->arg.map.key);
9400 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9401 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9402 if (!parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9403 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9404 Alert("parsing [%s:%d]: 'http-request %s': %s.\n",
9405 file, linenum, args[0], error);
9406 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9407 goto out_err;
9408 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9409 free(proxy->conf.lfs_file);
9410 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9411 proxy->conf.lfs_line = proxy->conf.args.line;
9412 cur_arg += 1;
9413 } else if (strncmp(args[0], "del-map", 7) == 0) {
9414 /* http-request del-map(<reference (map name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9415 rule->action = ACT_HTTP_DEL_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9416 /*
9417 * '+ 8' for 'del-map('
9418 * '- 9' for 'del-map(' + trailing ')'
9419 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9420 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9421
9422 cur_arg = 1;
9423
9424 if (!*args[cur_arg] ||
9425 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9426 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9427 file, linenum, args[0]);
9428 goto out_err;
9429 }
9430
9431 LIST_INIT(&rule->arg.map.key);
9432 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9433 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9434 if (!parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9435 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9436 Alert("parsing [%s:%d]: 'http-request %s': %s.\n",
9437 file, linenum, args[0], error);
9438 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9439 goto out_err;
9440 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9441 free(proxy->conf.lfs_file);
9442 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9443 proxy->conf.lfs_line = proxy->conf.args.line;
9444 cur_arg += 1;
9445 } else if (strncmp(args[0], "set-map", 7) == 0) {
9446 /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9447 rule->action = ACT_HTTP_SET_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9448 /*
9449 * '+ 8' for 'set-map('
9450 * '- 9' for 'set-map(' + trailing ')'
9451 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9452 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9453
9454 cur_arg = 1;
9455
9456 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9457 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9458 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9459 file, linenum, args[0]);
9460 goto out_err;
9461 }
9462
9463 LIST_INIT(&rule->arg.map.key);
9464 LIST_INIT(&rule->arg.map.value);
9465 proxy->conf.args.ctx = ARGC_HRQ;
9466
9467 /* key pattern */
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9468 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9469 if (!parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9470 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9471 Alert("parsing [%s:%d]: 'http-request %s' key: %s.\n",
9472 file, linenum, args[0], error);
9473 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9474 goto out_err;
9475 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9476
9477 /* value pattern */
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9478 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9479 if (!parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9480 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9481 Alert("parsing [%s:%d]: 'http-request %s' pattern: %s.\n",
9482 file, linenum, args[0], error);
9483 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9484 goto out_err;
9485 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9486 free(proxy->conf.lfs_file);
9487 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9488 proxy->conf.lfs_line = proxy->conf.args.line;
9489
9490 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9491 } else if (((custom = action_http_req_custom(args[0])) != NULL)) {
9492 char *errmsg = NULL;
9493 cur_arg = 1;
9494 /* try in the module list */
Thierry FOURNIER5563e4b2015-08-14 19:20:07 +0200[diff] [blame]9495 rule->from = ACT_F_HTTP_REQ;
Thierry FOURNIER85c6c972015-09-22 19:14:35 +0200[diff] [blame]9496 rule->kw = custom;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]9497 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) == ACT_RET_PRS_ERR) {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9498 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9499 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9500 free(errmsg);
9501 goto out_err;
9502 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9503 } else {
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9504 action_build_list(&http_req_keywords.list, &trash);
9505 Alert("parsing [%s:%d]: 'http-request' expects 'allow', 'deny', 'auth', 'redirect', "
9506 "'tarpit', 'add-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', "
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]9507 "'set-tos', 'set-mark', 'set-log-level', 'add-acl', 'del-acl', 'del-map', 'set-map', 'track-sc*'"
William Lallemand2e785f22016-05-25 01:48:42 +0200[diff] [blame]9508 "%s%s, but got '%s'%s.\n",
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9509 file, linenum, *trash.str ? ", " : "", trash.str, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9510 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9511 }
9512
9513 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9514 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9515 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9516
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9517 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9518 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
9519 file, linenum, args[0], errmsg);
9520 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9521 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9522 }
9523 rule->cond = cond;
9524 }
9525 else if (*args[cur_arg]) {
9526 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
9527 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9528 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9529 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9530 }
9531
9532 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9533 out_err:
9534 free(rule);
9535 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9536}
9537
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9538/* parse an "http-respose" rule */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9539struct act_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9540{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9541 struct act_rule *rule;
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]9542 struct action_kw *custom = NULL;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9543 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9544 char *error;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9545
9546 rule = calloc(1, sizeof(*rule));
9547 if (!rule) {
9548 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
9549 goto out_err;
9550 }
9551
9552 if (!strcmp(args[0], "allow")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9553 rule->action = ACT_ACTION_ALLOW;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9554 cur_arg = 1;
9555 } else if (!strcmp(args[0], "deny")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9556 rule->action = ACT_ACTION_DENY;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9557 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9558 } else if (!strcmp(args[0], "set-nice")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9559 rule->action = ACT_HTTP_SET_NICE;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9560 cur_arg = 1;
9561
9562 if (!*args[cur_arg] ||
9563 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9564 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
9565 file, linenum, args[0]);
9566 goto out_err;
9567 }
9568 rule->arg.nice = atoi(args[cur_arg]);
9569 if (rule->arg.nice < -1024)
9570 rule->arg.nice = -1024;
9571 else if (rule->arg.nice > 1024)
9572 rule->arg.nice = 1024;
9573 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9574 } else if (!strcmp(args[0], "set-tos")) {
9575#ifdef IP_TOS
9576 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9577 rule->action = ACT_HTTP_SET_TOS;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9578 cur_arg = 1;
9579
9580 if (!*args[cur_arg] ||
9581 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9582 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9583 file, linenum, args[0]);
9584 goto out_err;
9585 }
9586
9587 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9588 if (err && *err != '\0') {
9589 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9590 file, linenum, err, args[0]);
9591 goto out_err;
9592 }
9593 cur_arg++;
9594#else
9595 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9596 goto out_err;
9597#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9598 } else if (!strcmp(args[0], "set-mark")) {
9599#ifdef SO_MARK
9600 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9601 rule->action = ACT_HTTP_SET_MARK;
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9602 cur_arg = 1;
9603
9604 if (!*args[cur_arg] ||
9605 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9606 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9607 file, linenum, args[0]);
9608 goto out_err;
9609 }
9610
9611 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9612 if (err && *err != '\0') {
9613 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9614 file, linenum, err, args[0]);
9615 goto out_err;
9616 }
9617 cur_arg++;
9618 global.last_checks |= LSTCHK_NETADM;
9619#else
9620 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9621 goto out_err;
9622#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9623 } else if (!strcmp(args[0], "set-log-level")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9624 rule->action = ACT_HTTP_SET_LOGL;
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9625 cur_arg = 1;
9626
9627 if (!*args[cur_arg] ||
9628 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9629 bad_log_level:
9630 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
9631 file, linenum, args[0]);
9632 goto out_err;
9633 }
9634 if (strcmp(args[cur_arg], "silent") == 0)
9635 rule->arg.loglevel = -1;
Ruoshan Huangdd016782016-06-15 22:16:03 +0800[diff] [blame]9636 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9637 goto bad_log_level;
9638 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9639 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9640 rule->action = *args[0] == 'a' ? ACT_HTTP_ADD_HDR : ACT_HTTP_SET_HDR;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9641 cur_arg = 1;
9642
9643 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9644 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9645 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9646 file, linenum, args[0]);
9647 goto out_err;
9648 }
9649
9650 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9651 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9652 LIST_INIT(&rule->arg.hdr_add.fmt);
9653
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9654 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9655 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9656 if (!parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9657 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9658 Alert("parsing [%s:%d]: 'http-response %s': %s.\n",
9659 file, linenum, args[0], error);
9660 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9661 goto out_err;
9662 }
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9663 free(proxy->conf.lfs_file);
9664 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9665 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9666 cur_arg += 2;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9667 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9668 rule->action = args[0][8] == 'h' ? ACT_HTTP_REPLACE_HDR : ACT_HTTP_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9669 cur_arg = 1;
9670
9671 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann12cb00b2014-08-08 17:29:06 +0200[diff] [blame]9672 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
9673 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 3 arguments.\n",
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9674 file, linenum, args[0]);
9675 goto out_err;
9676 }
9677
9678 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9679 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9680 LIST_INIT(&rule->arg.hdr_add.fmt);
9681
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9682 error = NULL;
9683 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9684 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9685 args[cur_arg + 1], error);
9686 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9687 goto out_err;
9688 }
9689
9690 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9691 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9692 if (!parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9693 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9694 Alert("parsing [%s:%d]: 'http-response %s': %s.\n",
9695 file, linenum, args[0], error);
9696 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9697 goto out_err;
9698 }
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9699
9700 free(proxy->conf.lfs_file);
9701 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9702 proxy->conf.lfs_line = proxy->conf.args.line;
9703 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9704 } else if (strcmp(args[0], "del-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9705 rule->action = ACT_HTTP_DEL_HDR;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9706 cur_arg = 1;
9707
9708 if (!*args[cur_arg] ||
9709 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9710 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9711 file, linenum, args[0]);
9712 goto out_err;
9713 }
9714
9715 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9716 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9717
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9718 proxy->conf.args.ctx = ARGC_HRS;
9719 free(proxy->conf.lfs_file);
9720 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9721 proxy->conf.lfs_line = proxy->conf.args.line;
9722 cur_arg += 1;
9723 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9724 /* http-request add-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9725 rule->action = ACT_HTTP_ADD_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9726 /*
9727 * '+ 8' for 'add-acl('
9728 * '- 9' for 'add-acl(' + trailing ')'
9729 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9730 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9731
9732 cur_arg = 1;
9733
9734 if (!*args[cur_arg] ||
9735 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9736 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9737 file, linenum, args[0]);
9738 goto out_err;
9739 }
9740
9741 LIST_INIT(&rule->arg.map.key);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9742 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9743 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9744 if (!parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9745 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9746 Alert("parsing [%s:%d]: 'http-response %s': %s.\n",
9747 file, linenum, args[0], error);
9748 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9749 goto out_err;
9750 }
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9751 free(proxy->conf.lfs_file);
9752 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9753 proxy->conf.lfs_line = proxy->conf.args.line;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9754
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9755 cur_arg += 1;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9756 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9757 /* http-response del-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9758 rule->action = ACT_HTTP_DEL_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9759 /*
9760 * '+ 8' for 'del-acl('
9761 * '- 9' for 'del-acl(' + trailing ')'
9762 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9763 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9764
9765 cur_arg = 1;
9766
9767 if (!*args[cur_arg] ||
9768 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9769 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9770 file, linenum, args[0]);
9771 goto out_err;
9772 }
9773
9774 LIST_INIT(&rule->arg.map.key);
9775 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9776 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9777 if (!parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9778 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9779 Alert("parsing [%s:%d]: 'http-response %s': %s.\n",
9780 file, linenum, args[0], error);
9781 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9782 goto out_err;
9783 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9784 free(proxy->conf.lfs_file);
9785 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9786 proxy->conf.lfs_line = proxy->conf.args.line;
9787 cur_arg += 1;
9788 } else if (strncmp(args[0], "del-map", 7) == 0) {
9789 /* http-response del-map(<reference (map name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9790 rule->action = ACT_HTTP_DEL_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9791 /*
9792 * '+ 8' for 'del-map('
9793 * '- 9' for 'del-map(' + trailing ')'
9794 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9795 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9796
9797 cur_arg = 1;
9798
9799 if (!*args[cur_arg] ||
9800 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9801 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9802 file, linenum, args[0]);
9803 goto out_err;
9804 }
9805
9806 LIST_INIT(&rule->arg.map.key);
9807 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9808 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9809 if (!parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9810 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9811 Alert("parsing [%s:%d]: 'http-response %s' %s.\n",
9812 file, linenum, args[0], error);
9813 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9814 goto out_err;
9815 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9816 free(proxy->conf.lfs_file);
9817 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9818 proxy->conf.lfs_line = proxy->conf.args.line;
9819 cur_arg += 1;
9820 } else if (strncmp(args[0], "set-map", 7) == 0) {
9821 /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9822 rule->action = ACT_HTTP_SET_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9823 /*
9824 * '+ 8' for 'set-map('
9825 * '- 9' for 'set-map(' + trailing ')'
9826 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9827 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9828
9829 cur_arg = 1;
9830
9831 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9832 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9833 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9834 file, linenum, args[0]);
9835 goto out_err;
9836 }
9837
9838 LIST_INIT(&rule->arg.map.key);
9839 LIST_INIT(&rule->arg.map.value);
9840
9841 proxy->conf.args.ctx = ARGC_HRS;
9842
9843 /* key pattern */
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9844 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9845 if (!parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9846 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9847 Alert("parsing [%s:%d]: 'http-response %s' name: %s.\n",
9848 file, linenum, args[0], error);
9849 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9850 goto out_err;
9851 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9852
9853 /* value pattern */
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9854 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9855 if (!parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9856 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9857 Alert("parsing [%s:%d]: 'http-response %s' value: %s.\n",
9858 file, linenum, args[0], error);
9859 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9860 goto out_err;
9861 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9862
9863 free(proxy->conf.lfs_file);
9864 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9865 proxy->conf.lfs_line = proxy->conf.args.line;
9866
9867 cur_arg += 2;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]9868 } else if (strcmp(args[0], "redirect") == 0) {
9869 struct redirect_rule *redir;
9870 char *errmsg = NULL;
9871
9872 if ((redir = http_parse_redirect_rule(file, linenum, proxy, (const char **)args + 1, &errmsg, 1, 1)) == NULL) {
9873 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9874 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9875 goto out_err;
9876 }
9877
9878 /* this redirect rule might already contain a parsed condition which
9879 * we'll pass to the http-request rule.
9880 */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9881 rule->action = ACT_HTTP_REDIR;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]9882 rule->arg.redir = redir;
9883 rule->cond = redir->cond;
9884 redir->cond = NULL;
9885 cur_arg = 2;
9886 return rule;
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]9887 } else if (strncmp(args[0], "track-sc", 8) == 0 &&
9888 args[0][9] == '\0' && args[0][8] >= '0' &&
9889 args[0][8] < '0' + MAX_SESS_STKCTR) { /* track-sc 0..9 */
9890 struct sample_expr *expr;
9891 unsigned int where;
9892 char *err = NULL;
9893
9894 cur_arg = 1;
9895 proxy->conf.args.ctx = ARGC_TRK;
9896
9897 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9898 if (!expr) {
9899 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9900 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9901 free(err);
9902 goto out_err;
9903 }
9904
9905 where = 0;
9906 if (proxy->cap & PR_CAP_FE)
9907 where |= SMP_VAL_FE_HRS_HDR;
9908 if (proxy->cap & PR_CAP_BE)
9909 where |= SMP_VAL_BE_HRS_HDR;
9910
9911 if (!(expr->fetch->val & where)) {
9912 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule :"
9913 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9914 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9915 args[cur_arg-1], sample_src_names(expr->fetch->use));
9916 free(expr);
9917 goto out_err;
9918 }
9919
9920 if (strcmp(args[cur_arg], "table") == 0) {
9921 cur_arg++;
9922 if (!args[cur_arg]) {
9923 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : missing table name.\n",
9924 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9925 free(expr);
9926 goto out_err;
9927 }
9928 /* we copy the table name for now, it will be resolved later */
9929 rule->arg.trk_ctr.table.n = strdup(args[cur_arg]);
9930 cur_arg++;
9931 }
9932 rule->arg.trk_ctr.expr = expr;
9933 rule->action = ACT_ACTION_TRK_SC0 + args[0][8] - '0';
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9934 } else if (((custom = action_http_res_custom(args[0])) != NULL)) {
9935 char *errmsg = NULL;
9936 cur_arg = 1;
9937 /* try in the module list */
Thierry FOURNIER5563e4b2015-08-14 19:20:07 +0200[diff] [blame]9938 rule->from = ACT_F_HTTP_RES;
Thierry FOURNIER85c6c972015-09-22 19:14:35 +0200[diff] [blame]9939 rule->kw = custom;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]9940 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) == ACT_RET_PRS_ERR) {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9941 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9942 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9943 free(errmsg);
9944 goto out_err;
9945 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9946 } else {
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9947 action_build_list(&http_res_keywords.list, &trash);
9948 Alert("parsing [%s:%d]: 'http-response' expects 'allow', 'deny', 'redirect', "
9949 "'add-header', 'del-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', "
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]9950 "'set-tos', 'set-mark', 'set-log-level', 'add-acl', 'del-acl', 'del-map', 'set-map', 'track-sc*'"
William Lallemand2e785f22016-05-25 01:48:42 +0200[diff] [blame]9951 "%s%s, but got '%s'%s.\n",
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9952 file, linenum, *trash.str ? ", " : "", trash.str, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9953 goto out_err;
9954 }
9955
9956 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9957 struct acl_cond *cond;
9958 char *errmsg = NULL;
9959
9960 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9961 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
9962 file, linenum, args[0], errmsg);
9963 free(errmsg);
9964 goto out_err;
9965 }
9966 rule->cond = cond;
9967 }
9968 else if (*args[cur_arg]) {
9969 Alert("parsing [%s:%d]: 'http-response %s' expects"
9970 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9971 file, linenum, args[0], args[cur_arg]);
9972 goto out_err;
9973 }
9974
9975 return rule;
9976 out_err:
9977 free(rule);
9978 return NULL;
9979}
9980
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9981/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9982 * with <err> filled with the error message. If <use_fmt> is not null, builds a
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9983 * dynamic log-format rule instead of a static string. Parameter <dir> indicates
9984 * the direction of the rule, and equals 0 for request, non-zero for responses.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9985 */
9986struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9987 const char **args, char **errmsg, int use_fmt, int dir)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9988{
9989 struct redirect_rule *rule;
9990 int cur_arg;
9991 int type = REDIRECT_TYPE_NONE;
9992 int code = 302;
9993 const char *destination = NULL;
9994 const char *cookie = NULL;
9995 int cookie_set = 0;
9996 unsigned int flags = REDIRECT_FLAG_NONE;
9997 struct acl_cond *cond = NULL;
9998
9999 cur_arg = 0;
10000 while (*(args[cur_arg])) {
10001 if (strcmp(args[cur_arg], "location") == 0) {
10002 if (!*args[cur_arg + 1])
10003 goto missing_arg;
10004
10005 type = REDIRECT_TYPE_LOCATION;
10006 cur_arg++;
10007 destination = args[cur_arg];
10008 }
10009 else if (strcmp(args[cur_arg], "prefix") == 0) {
10010 if (!*args[cur_arg + 1])
10011 goto missing_arg;
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10012 type = REDIRECT_TYPE_PREFIX;
10013 cur_arg++;
10014 destination = args[cur_arg];
10015 }
10016 else if (strcmp(args[cur_arg], "scheme") == 0) {
10017 if (!*args[cur_arg + 1])
10018 goto missing_arg;
10019
10020 type = REDIRECT_TYPE_SCHEME;
10021 cur_arg++;
10022 destination = args[cur_arg];
10023 }
10024 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
10025 if (!*args[cur_arg + 1])
10026 goto missing_arg;
10027
10028 cur_arg++;
10029 cookie = args[cur_arg];
10030 cookie_set = 1;
10031 }
10032 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
10033 if (!*args[cur_arg + 1])
10034 goto missing_arg;
10035
10036 cur_arg++;
10037 cookie = args[cur_arg];
10038 cookie_set = 0;
10039 }
10040 else if (strcmp(args[cur_arg], "code") == 0) {
10041 if (!*args[cur_arg + 1])
10042 goto missing_arg;
10043
10044 cur_arg++;
10045 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]10046 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10047 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]10048 "'%s': unsupported HTTP code '%s' (must be one of 301, 302, 303, 307 or 308)",
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10049 args[cur_arg - 1], args[cur_arg]);
10050 return NULL;
10051 }
10052 }
10053 else if (!strcmp(args[cur_arg],"drop-query")) {
10054 flags |= REDIRECT_FLAG_DROP_QS;
10055 }
10056 else if (!strcmp(args[cur_arg],"append-slash")) {
10057 flags |= REDIRECT_FLAG_APPEND_SLASH;
10058 }
10059 else if (strcmp(args[cur_arg], "if") == 0 ||
10060 strcmp(args[cur_arg], "unless") == 0) {
10061 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
10062 if (!cond) {
10063 memprintf(errmsg, "error in condition: %s", *errmsg);
10064 return NULL;
10065 }
10066 break;
10067 }
10068 else {
10069 memprintf(errmsg,
10070 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
10071 args[cur_arg]);
10072 return NULL;
10073 }
10074 cur_arg++;
10075 }
10076
10077 if (type == REDIRECT_TYPE_NONE) {
10078 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
10079 return NULL;
10080 }
10081
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]10082 if (dir && type != REDIRECT_TYPE_LOCATION) {
10083 memprintf(errmsg, "response only supports redirect type 'location'");
10084 return NULL;
10085 }
10086
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]10087 rule = calloc(1, sizeof(*rule));
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10088 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]10089 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10090
10091 if (!use_fmt) {
10092 /* old-style static redirect rule */
10093 rule->rdr_str = strdup(destination);
10094 rule->rdr_len = strlen(destination);
10095 }
10096 else {
10097 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10098
10099 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
10100 * if prefix == "/", we don't want to add anything, otherwise it
10101 * makes it hard for the user to configure a self-redirection.
10102 */
Godbachd9722032014-12-18 15:44:58 +0800[diff] [blame]10103 curproxy->conf.args.ctx = ARGC_RDR;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10104 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]10105 if (!parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
10106 dir ? (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRS_HDR : SMP_VAL_BE_HRS_HDR
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]10107 : (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
10108 errmsg)) {
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]10109 return NULL;
10110 }
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]10111 free(curproxy->conf.lfs_file);
10112 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
10113 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10114 }
10115 }
10116
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10117 if (cookie) {
10118 /* depending on cookie_set, either we want to set the cookie, or to clear it.
10119 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
10120 */
10121 rule->cookie_len = strlen(cookie);
10122 if (cookie_set) {
10123 rule->cookie_str = malloc(rule->cookie_len + 10);
10124 memcpy(rule->cookie_str, cookie, rule->cookie_len);
10125 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
10126 rule->cookie_len += 9;
10127 } else {
10128 rule->cookie_str = malloc(rule->cookie_len + 21);
10129 memcpy(rule->cookie_str, cookie, rule->cookie_len);
10130 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
10131 rule->cookie_len += 20;
10132 }
10133 }
10134 rule->type = type;
10135 rule->code = code;
10136 rule->flags = flags;
10137 LIST_INIT(&rule->list);
10138 return rule;
10139
10140 missing_arg:
10141 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
10142 return NULL;
10143}
10144
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10145/************************************************************************/
10146/* The code below is dedicated to ACL parsing and matching */
10147/************************************************************************/
10148
10149
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10150/* This function ensures that the prerequisites for an L7 fetch are ready,
10151 * which means that a request or response is ready. If some data is missing,
10152 * a parsing attempt is made. This is useful in TCP-based ACLs which are able
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10153 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
10154 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10155 *
10156 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10157 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
10158 * decide whether or not an HTTP message is present ;
10159 * 0 if the requested data cannot be fetched or if it is certain that
10160 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10161 * 1 if an HTTP message is ready
10162 */
James Rosewell91a41cb2015-09-18 17:11:16 +0100[diff] [blame]10163int smp_prefetch_http(struct proxy *px, struct stream *s, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10164 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10165{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10166 struct http_txn *txn;
10167 struct http_msg *msg;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10168
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10169 /* Note: it is possible that <s> is NULL when called before stream
10170 * initialization (eg: tcp-request connection), so this function is the
10171 * one responsible for guarding against this case for all HTTP users.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10172 */
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10173 if (!s)
10174 return 0;
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10175
Thierry FOURNIERed08d6a2015-09-24 08:40:18 +0200[diff] [blame]10176 if (!s->txn) {
10177 if (unlikely(!http_alloc_txn(s)))
10178 return 0; /* not enough memory */
10179 http_init_txn(s);
10180 }
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10181 txn = s->txn;
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10182 msg = &txn->req;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10183
10184 /* Check for a dependency on a request */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10185 smp->data.type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10186
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10187 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10188 /* If the buffer does not leave enough free space at the end,
10189 * we must first realign it.
10190 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10191 if (s->req.buf->p > s->req.buf->data &&
10192 s->req.buf->i + s->req.buf->p > s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)
10193 buffer_slow_realign(s->req.buf);
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10194
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10195 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]10196 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10197 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10198
10199 /* Try to decode HTTP request */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10200 if (likely(msg->next < s->req.buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10201 http_msg_analyzer(msg, &txn->hdr_idx);
10202
10203 /* Still no valid request ? */
10204 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]10205 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10206 buffer_full(s->req.buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10207 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10208 }
10209 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10210 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10211 return 0;
10212 }
10213
10214 /* OK we just got a valid HTTP request. We have some minor
10215 * preparation to perform so that further checks can rely
10216 * on HTTP tests.
10217 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10218
10219 /* If the request was parsed but was too large, we must absolutely
10220 * return an error so that it is not processed. At the moment this
10221 * cannot happen, but if the parsers are to change in the future,
10222 * we want this check to be maintained.
10223 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10224 if (unlikely(s->req.buf->i + s->req.buf->p >
10225 s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)) {
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]10226 msg->err_state = msg->msg_state;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10227 msg->msg_state = HTTP_MSG_ERROR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10228 smp->data.u.sint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10229 return 1;
10230 }
10231
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10232 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10233 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]10234 s->flags |= SF_REDIRECTABLE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10235
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10236 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
10237 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10238 }
10239
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10240 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10241 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10242 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10243
10244 /* otherwise everything's ready for the request */
10245 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10246 else {
10247 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10248 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
10249 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10250 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10251 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10252 }
10253
10254 /* everything's OK */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10255 smp->data.u.sint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10256 return 1;
10257}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10258
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10259/* 1. Check on METHOD
10260 * We use the pre-parsed method if it is known, and store its number as an
10261 * integer. If it is unknown, we use the pointer and the length.
10262 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]10263static int pat_parse_meth(const char *text, struct pattern *pattern, int mflags, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10264{
10265 int len, meth;
10266
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]10267 len = strlen(text);
10268 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10269
10270 pattern->val.i = meth;
10271 if (meth == HTTP_METH_OTHER) {
Willy Tarreau912c1192014-08-29 15:15:50 +0200[diff] [blame]10272 pattern->ptr.str = (char *)text;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10273 pattern->len = len;
10274 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10275 else {
10276 pattern->ptr.str = NULL;
10277 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10278 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10279 return 1;
10280}
10281
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10282/* This function fetches the method of current HTTP request and stores
10283 * it in the global pattern struct as a chunk. There are two possibilities :
10284 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
10285 * in <len> and <ptr> is NULL ;
10286 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
10287 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10288 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10289 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10290static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10291smp_fetch_meth(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10292{
10293 int meth;
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10294 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10295
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10296 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10297
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10298 txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10299 meth = txn->meth;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10300 smp->data.type = SMP_T_METH;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10301 smp->data.u.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10302 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10303 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
10304 /* ensure the indexes are not affected */
10305 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10306 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10307 smp->data.u.meth.str.len = txn->req.sl.rq.m_l;
10308 smp->data.u.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10309 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10310 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10311 return 1;
10312}
10313
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10314/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10315static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10316{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10317 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10318 struct pattern_list *lst;
10319 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10320
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10321 list_for_each_entry(lst, &expr->patterns, list) {
10322 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10323
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10324 /* well-known method */
10325 if (pattern->val.i != HTTP_METH_OTHER) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10326 if (smp->data.u.meth.meth == pattern->val.i)
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10327 return pattern;
10328 else
10329 continue;
10330 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10331
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10332 /* Other method, we must compare the strings */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10333 if (pattern->len != smp->data.u.meth.str.len)
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10334 continue;
10335
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]10336 icase = expr->mflags & PAT_MF_IGNORE_CASE;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10337 if ((icase && strncasecmp(pattern->ptr.str, smp->data.u.meth.str.str, smp->data.u.meth.str.len) == 0) ||
10338 (!icase && strncmp(pattern->ptr.str, smp->data.u.meth.str.str, smp->data.u.meth.str.len) == 0))
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10339 return pattern;
10340 }
10341 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10342}
10343
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10344static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10345smp_fetch_rqver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10346{
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10347 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10348 char *ptr;
10349 int len;
10350
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10351 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10352
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10353 txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10354 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10355 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10356
10357 while ((len-- > 0) && (*ptr++ != '/'));
10358 if (len <= 0)
10359 return 0;
10360
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10361 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10362 smp->data.u.str.str = ptr;
10363 smp->data.u.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10364
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10365 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10366 return 1;
10367}
10368
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10369static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10370smp_fetch_stver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10371{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10372 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10373 char *ptr;
10374 int len;
10375
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10376 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10377
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10378 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10379 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10380 return 0;
10381
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10382 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10383 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10384
10385 while ((len-- > 0) && (*ptr++ != '/'));
10386 if (len <= 0)
10387 return 0;
10388
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10389 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10390 smp->data.u.str.str = ptr;
10391 smp->data.u.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10392
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10393 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10394 return 1;
10395}
10396
10397/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10398static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10399smp_fetch_stcode(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10400{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10401 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10402 char *ptr;
10403 int len;
10404
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10405 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10406
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10407 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10408 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10409 return 0;
10410
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10411 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10412 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10413
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10414 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10415 smp->data.u.sint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10416 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10417 return 1;
10418}
10419
Thierry Fournierf4011dd2016-03-29 17:23:51 +0200[diff] [blame]10420static int
10421smp_fetch_uniqueid(const struct arg *args, struct sample *smp, const char *kw, void *private)
10422{
10423 if (LIST_ISEMPTY(&smp->sess->fe->format_unique_id))
10424 return 0;
10425
10426 if (!smp->strm->unique_id) {
10427 if ((smp->strm->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
10428 return 0;
10429 smp->strm->unique_id[0] = '\0';
10430 }
10431 smp->data.u.str.len = build_logline(smp->strm, smp->strm->unique_id,
10432 UNIQUEID_LEN, &smp->sess->fe->format_unique_id);
10433
10434 smp->data.type = SMP_T_STR;
10435 smp->data.u.str.str = smp->strm->unique_id;
10436 smp->flags = SMP_F_CONST;
10437 return 1;
10438}
10439
Thierry FOURNIERd7d88812017-04-19 15:15:14 +0200[diff] [blame]10440/* Returns a string block containing all headers including the
10441 * empty line wich separes headers from the body. This is useful
10442 * form some headers analysis.
10443 */
10444static int
10445smp_fetch_hdrs(const struct arg *args, struct sample *smp, const char *kw, void *private)
10446{
10447 struct http_msg *msg;
10448 struct hdr_idx *idx;
10449 struct http_txn *txn;
10450
10451 CHECK_HTTP_MESSAGE_FIRST();
10452
10453 txn = smp->strm->txn;
10454 idx = &txn->hdr_idx;
10455 msg = &txn->req;
10456
10457 smp->data.type = SMP_T_STR;
10458 smp->data.u.str.str = msg->chn->buf->p + hdr_idx_first_pos(idx);
10459 smp->data.u.str.len = msg->eoh - hdr_idx_first_pos(idx) + 1 +
10460 (msg->chn->buf->p[msg->eoh] == '\r');
10461
10462 return 1;
10463}
10464
Thierry FOURNIER5617dce2017-04-09 05:38:19 +0200[diff] [blame]10465/* Returns the header request in a length/value encoded format.
10466 * This is useful for exchanges with the SPOE.
10467 *
10468 * A "length value" is a multibyte code encoding numbers. It uses the
10469 * SPOE format. The encoding is the following:
10470 *
10471 * Each couple "header name" / "header value" is composed
10472 * like this:
10473 * "length value" "header name bytes"
10474 * "length value" "header value bytes"
10475 * When the last header is reached, the header name and the header
10476 * value are empty. Their length are 0
10477 */
10478static int
10479smp_fetch_hdrs_bin(const struct arg *args, struct sample *smp, const char *kw, void *private)
10480{
10481 struct http_msg *msg;
10482 struct chunk *temp;
10483 struct hdr_idx *idx;
10484 const char *cur_ptr, *cur_next, *p;
10485 int old_idx, cur_idx;
10486 struct hdr_idx_elem *cur_hdr;
10487 const char *hn, *hv;
10488 int hnl, hvl;
10489 int ret;
10490 struct http_txn *txn;
10491 char *buf;
10492 char *end;
10493
10494 CHECK_HTTP_MESSAGE_FIRST();
10495
10496 temp = get_trash_chunk();
10497 buf = temp->str;
10498 end = temp->str + temp->size;
10499
10500 txn = smp->strm->txn;
10501 idx = &txn->hdr_idx;
10502 msg = &txn->req;
10503
10504 /* Build array of headers. */
10505 old_idx = 0;
10506 cur_next = msg->chn->buf->p + hdr_idx_first_pos(idx);
10507 while (1) {
10508 cur_idx = idx->v[old_idx].next;
10509 if (!cur_idx)
10510 break;
10511 old_idx = cur_idx;
10512
10513 cur_hdr = &idx->v[cur_idx];
10514 cur_ptr = cur_next;
10515 cur_next = cur_ptr + cur_hdr->len + cur_hdr->cr + 1;
10516
10517 /* Now we have one full header at cur_ptr of len cur_hdr->len,
10518 * and the next header starts at cur_next. We'll check
10519 * this header in the list as well as against the default
10520 * rule.
10521 */
10522
10523 /* look for ': *'. */
10524 hn = cur_ptr;
10525 for (p = cur_ptr; p < cur_ptr + cur_hdr->len && *p != ':'; p++);
10526 if (p >= cur_ptr+cur_hdr->len)
10527 continue;
10528 hnl = p - hn;
10529 p++;
10530 while (p < cur_ptr + cur_hdr->len && (*p == ' ' || *p == '\t'))
10531 p++;
10532 if (p >= cur_ptr + cur_hdr->len)
10533 continue;
10534 hv = p;
10535 hvl = cur_ptr + cur_hdr->len-p;
10536
10537 /* encode the header name. */
10538 ret = encode_varint(hnl, &buf, end);
10539 if (ret == -1)
10540 return 0;
10541 if (buf + hnl > end)
10542 return 0;
10543 memcpy(buf, hn, hnl);
10544 buf += hnl;
10545
10546 /* encode and copy the value. */
10547 ret = encode_varint(hvl, &buf, end);
10548 if (ret == -1)
10549 return 0;
10550 if (buf + hvl > end)
10551 return 0;
10552 memcpy(buf, hv, hvl);
10553 buf += hvl;
10554 }
10555
10556 /* encode the end of the header list with empty
10557 * header name and header value.
10558 */
10559 ret = encode_varint(0, &buf, end);
10560 if (ret == -1)
10561 return 0;
10562 ret = encode_varint(0, &buf, end);
10563 if (ret == -1)
10564 return 0;
10565
10566 /* Initialise sample data which will be filled. */
10567 smp->data.type = SMP_T_BIN;
10568 smp->data.u.str.str = temp->str;
10569 smp->data.u.str.len = buf - temp->str;
10570 smp->data.u.str.size = temp->size;
10571
10572 return 1;
10573}
10574
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10575/* returns the longest available part of the body. This requires that the body
10576 * has been waited for using http-buffer-request.
10577 */
10578static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10579smp_fetch_body(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10580{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10581 struct http_msg *msg;
10582 unsigned long len;
10583 unsigned long block1;
10584 char *body;
10585 struct chunk *temp;
10586
10587 CHECK_HTTP_MESSAGE_FIRST();
10588
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10589 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10590 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10591 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10592 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10593
10594 len = http_body_bytes(msg);
10595 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
10596
10597 block1 = len;
10598 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
10599 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
10600
10601 if (block1 == len) {
10602 /* buffer is not wrapped (or empty) */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10603 smp->data.type = SMP_T_BIN;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10604 smp->data.u.str.str = body;
10605 smp->data.u.str.len = len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10606 smp->flags = SMP_F_VOL_TEST | SMP_F_CONST;
10607 }
10608 else {
10609 /* buffer is wrapped, we need to defragment it */
10610 temp = get_trash_chunk();
10611 memcpy(temp->str, body, block1);
10612 memcpy(temp->str + block1, msg->chn->buf->data, len - block1);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10613 smp->data.type = SMP_T_BIN;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10614 smp->data.u.str.str = temp->str;
10615 smp->data.u.str.len = len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10616 smp->flags = SMP_F_VOL_TEST;
10617 }
10618 return 1;
10619}
10620
10621
10622/* returns the available length of the body. This requires that the body
10623 * has been waited for using http-buffer-request.
10624 */
10625static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10626smp_fetch_body_len(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10627{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10628 struct http_msg *msg;
10629
10630 CHECK_HTTP_MESSAGE_FIRST();
10631
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10632 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10633 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10634 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10635 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10636
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10637 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10638 smp->data.u.sint = http_body_bytes(msg);
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10639
10640 smp->flags = SMP_F_VOL_TEST;
10641 return 1;
10642}
10643
10644
10645/* returns the advertised length of the body, or the advertised size of the
10646 * chunks available in the buffer. This requires that the body has been waited
10647 * for using http-buffer-request.
10648 */
10649static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10650smp_fetch_body_size(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10651{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10652 struct http_msg *msg;
10653
10654 CHECK_HTTP_MESSAGE_FIRST();
10655
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10656 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10657 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10658 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10659 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10660
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10661 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10662 smp->data.u.sint = msg->body_len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10663
10664 smp->flags = SMP_F_VOL_TEST;
10665 return 1;
10666}
10667
10668
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10669/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10670static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10671smp_fetch_url(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10672{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10673 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10674
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10675 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10676
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10677 txn = smp->strm->txn;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10678 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10679 smp->data.u.str.len = txn->req.sl.rq.u_l;
10680 smp->data.u.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10681 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10682 return 1;
10683}
10684
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10685static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10686smp_fetch_url_ip(const struct arg *args, struct sample *smp, const char *kw, void *private)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10687{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10688 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10689 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10690
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10691 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10692
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10693 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10694 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &addr, NULL);
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10695 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]10696 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10697
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10698 smp->data.type = SMP_T_IPV4;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10699 smp->data.u.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10700 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10701 return 1;
10702}
10703
10704static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10705smp_fetch_url_port(const struct arg *args, struct sample *smp, const char *kw, void *private)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10706{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10707 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10708 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10709
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10710 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10711
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10712 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10713 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &addr, NULL);
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10714 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
10715 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10716
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10717 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10718 smp->data.u.sint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]10719 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10720 return 1;
10721}
10722
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10723/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10724 * Accepts an optional argument of type string containing the header field name,
10725 * and an optional argument of type signed or unsigned integer to request an
10726 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10727 * headers are considered from the first one. It does not stop on commas and
10728 * returns full lines instead (useful for User-Agent or Date for example).
10729 */
10730static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10731smp_fetch_fhdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10732{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10733 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10734 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10735 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10736 int occ = 0;
10737 const char *name_str = NULL;
10738 int name_len = 0;
10739
10740 if (!ctx) {
10741 /* first call */
10742 ctx = &static_hdr_ctx;
10743 ctx->idx = 0;
10744 smp->ctx.a[0] = ctx;
10745 }
10746
10747 if (args) {
10748 if (args[0].type != ARGT_STR)
10749 return 0;
10750 name_str = args[0].data.str.str;
10751 name_len = args[0].data.str.len;
10752
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10753 if (args[1].type == ARGT_SINT)
10754 occ = args[1].data.sint;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10755 }
10756
10757 CHECK_HTTP_MESSAGE_FIRST();
10758
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10759 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10760 msg = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &smp->strm->txn->req : &smp->strm->txn->rsp;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10761
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10762 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
10763 /* search for header from the beginning */
10764 ctx->idx = 0;
10765
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10766 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10767 /* no explicit occurrence and single fetch => last header by default */
10768 occ = -1;
10769
10770 if (!occ)
10771 /* prepare to report multiple occurrences for ACL fetches */
10772 smp->flags |= SMP_F_NOT_LAST;
10773
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10774 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10775 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10776 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.u.str.str, &smp->data.u.str.len))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10777 return 1;
10778
10779 smp->flags &= ~SMP_F_NOT_LAST;
10780 return 0;
10781}
10782
10783/* 6. Check on HTTP header count. The number of occurrences is returned.
10784 * Accepts exactly 1 argument of type string. It does not stop on commas and
10785 * returns full lines instead (useful for User-Agent or Date for example).
10786 */
10787static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10788smp_fetch_fhdr_cnt(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10789{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10790 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10791 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10792 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10793 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10794 const char *name = NULL;
10795 int len = 0;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10796
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10797 if (args && args->type == ARGT_STR) {
10798 name = args->data.str.str;
10799 len = args->data.str.len;
10800 }
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10801
10802 CHECK_HTTP_MESSAGE_FIRST();
10803
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10804 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10805 msg = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &smp->strm->txn->req : &smp->strm->txn->rsp;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10806
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10807 ctx.idx = 0;
10808 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10809 while (http_find_full_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10810 cnt++;
10811
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10812 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10813 smp->data.u.sint = cnt;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10814 smp->flags = SMP_F_VOL_HDR;
10815 return 1;
10816}
10817
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10818static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10819smp_fetch_hdr_names(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10820{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10821 struct hdr_idx *idx;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10822 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10823 const struct http_msg *msg;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10824 struct chunk *temp;
10825 char del = ',';
10826
10827 if (args && args->type == ARGT_STR)
10828 del = *args[0].data.str.str;
10829
10830 CHECK_HTTP_MESSAGE_FIRST();
10831
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10832 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10833 msg = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &smp->strm->txn->req : &smp->strm->txn->rsp;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10834
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10835 temp = get_trash_chunk();
10836
10837 ctx.idx = 0;
10838 while (http_find_next_header(msg->chn->buf->p, idx, &ctx)) {
10839 if (temp->len)
10840 temp->str[temp->len++] = del;
10841 memcpy(temp->str + temp->len, ctx.line, ctx.del);
10842 temp->len += ctx.del;
10843 }
10844
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10845 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10846 smp->data.u.str.str = temp->str;
10847 smp->data.u.str.len = temp->len;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10848 smp->flags = SMP_F_VOL_HDR;
10849 return 1;
10850}
10851
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10852/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10853 * Accepts an optional argument of type string containing the header field name,
10854 * and an optional argument of type signed or unsigned integer to request an
10855 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10856 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10857 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10858static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10859smp_fetch_hdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10860{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10861 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10862 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10863 const struct http_msg *msg;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10864 int occ = 0;
10865 const char *name_str = NULL;
10866 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10867
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10868 if (!ctx) {
10869 /* first call */
10870 ctx = &static_hdr_ctx;
10871 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]10872 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10873 }
10874
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10875 if (args) {
10876 if (args[0].type != ARGT_STR)
10877 return 0;
10878 name_str = args[0].data.str.str;
10879 name_len = args[0].data.str.len;
10880
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10881 if (args[1].type == ARGT_SINT)
10882 occ = args[1].data.sint;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10883 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10884
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10885 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10886
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10887 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10888 msg = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &smp->strm->txn->req : &smp->strm->txn->rsp;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10889
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10890 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10891 /* search for header from the beginning */
10892 ctx->idx = 0;
10893
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10894 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10895 /* no explicit occurrence and single fetch => last header by default */
10896 occ = -1;
10897
10898 if (!occ)
10899 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10900 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]10901
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10902 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10903 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10904 if (http_get_hdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.u.str.str, &smp->data.u.str.len))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10905 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10906
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10907 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10908 return 0;
10909}
10910
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10911/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10912 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10913 */
10914static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10915smp_fetch_hdr_cnt(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10916{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10917 struct hdr_idx *idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10918 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10919 const struct http_msg *msg;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10920 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10921 const char *name = NULL;
10922 int len = 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10923
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10924 if (args && args->type == ARGT_STR) {
10925 name = args->data.str.str;
10926 len = args->data.str.len;
10927 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10928
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10929 CHECK_HTTP_MESSAGE_FIRST();
10930
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10931 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10932 msg = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &smp->strm->txn->req : &smp->strm->txn->rsp;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10933
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10934 ctx.idx = 0;
10935 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10936 while (http_find_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10937 cnt++;
10938
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10939 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10940 smp->data.u.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10941 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10942 return 1;
10943}
10944
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10945/* Fetch an HTTP header's integer value. The integer value is returned. It
10946 * takes a mandatory argument of type string and an optional one of type int
10947 * to designate a specific occurrence. It returns an unsigned integer, which
10948 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10949 */
10950static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10951smp_fetch_hdr_val(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10952{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10953 int ret = smp_fetch_hdr(args, smp, kw, private);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10954
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10955 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10956 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10957 smp->data.u.sint = strl2ic(smp->data.u.str.str, smp->data.u.str.len);
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10958 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10959
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10960 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10961}
10962
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10963/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
10964 * and an optional one of type int to designate a specific occurrence.
10965 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10966 */
10967static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10968smp_fetch_hdr_ip(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10969{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10970 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10971
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10972 while ((ret = smp_fetch_hdr(args, smp, kw, private)) > 0) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10973 if (url2ipv4((char *)smp->data.u.str.str, &smp->data.u.ipv4)) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10974 smp->data.type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10975 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10976 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10977 struct chunk *temp = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10978 if (smp->data.u.str.len < temp->size - 1) {
10979 memcpy(temp->str, smp->data.u.str.str, smp->data.u.str.len);
10980 temp->str[smp->data.u.str.len] = '\0';
10981 if (inet_pton(AF_INET6, temp->str, &smp->data.u.ipv6)) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10982 smp->data.type = SMP_T_IPV6;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10983 break;
10984 }
10985 }
10986 }
10987
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10988 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10989 if (!(smp->flags & SMP_F_NOT_LAST))
10990 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10991 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10992 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10993}
10994
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10995/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
10996 * the first '/' after the possible hostname, and ends before the possible '?'.
10997 */
10998static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10999smp_fetch_path(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]11000{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11001 struct http_txn *txn;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]11002 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]11003
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]11004 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]11005
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11006 txn = smp->strm->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11007 end = txn->req.chn->buf->p + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]11008 ptr = http_get_path(txn);
11009 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]11010 return 0;
11011
11012 /* OK, we got the '/' ! */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11013 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11014 smp->data.u.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]11015
11016 while (ptr < end && *ptr != '?')
11017 ptr++;
11018
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11019 smp->data.u.str.len = ptr - smp->data.u.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11020 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]11021 return 1;
11022}
11023
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]11024/* This produces a concatenation of the first occurrence of the Host header
11025 * followed by the path component if it begins with a slash ('/'). This means
11026 * that '*' will not be added, resulting in exactly the first Host entry.
11027 * If no Host header is found, then the path is returned as-is. The returned
11028 * value is stored in the trash so it does not need to be marked constant.
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]11029 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]11030 */
11031static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11032smp_fetch_base(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]11033{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11034 struct http_txn *txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]11035 char *ptr, *end, *beg;
11036 struct hdr_ctx ctx;
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]11037 struct chunk *temp;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]11038
11039 CHECK_HTTP_MESSAGE_FIRST();
11040
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11041 txn = smp->strm->txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]11042 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11043 if (!http_find_header2("Host", 4, txn->req.chn->buf->p, &txn->hdr_idx, &ctx) || !ctx.vlen)
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11044 return smp_fetch_path(args, smp, kw, private);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]11045
11046 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]11047 temp = get_trash_chunk();
11048 memcpy(temp->str, ctx.line + ctx.val, ctx.vlen);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11049 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11050 smp->data.u.str.str = temp->str;
11051 smp->data.u.str.len = ctx.vlen;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]11052
11053 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11054 end = txn->req.chn->buf->p + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]11055 beg = http_get_path(txn);
11056 if (!beg)
11057 beg = end;
11058
11059 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
11060
11061 if (beg < ptr && *beg == '/') {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11062 memcpy(smp->data.u.str.str + smp->data.u.str.len, beg, ptr - beg);
11063 smp->data.u.str.len += ptr - beg;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]11064 }
11065
11066 smp->flags = SMP_F_VOL_1ST;
11067 return 1;
11068}
11069
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]11070/* This produces a 32-bit hash of the concatenation of the first occurrence of
11071 * the Host header followed by the path component if it begins with a slash ('/').
11072 * This means that '*' will not be added, resulting in exactly the first Host
11073 * entry. If no Host header is found, then the path is used. The resulting value
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11074 * is hashed using the path hash followed by a full avalanche hash and provides a
11075 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]11076 * high-traffic sites without having to store whole paths.
11077 */
Thierry FOURNIER055b9d52014-07-15 16:11:07 +0200[diff] [blame]11078int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11079smp_fetch_base32(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]11080{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11081 struct http_txn *txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]11082 struct hdr_ctx ctx;
11083 unsigned int hash = 0;
11084 char *ptr, *beg, *end;
11085 int len;
11086
11087 CHECK_HTTP_MESSAGE_FIRST();
11088
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11089 txn = smp->strm->txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]11090 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11091 if (http_find_header2("Host", 4, txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]11092 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
11093 ptr = ctx.line + ctx.val;
11094 len = ctx.vlen;
11095 while (len--)
11096 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
11097 }
11098
11099 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11100 end = txn->req.chn->buf->p + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]11101 beg = http_get_path(txn);
11102 if (!beg)
11103 beg = end;
11104
11105 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
11106
11107 if (beg < ptr && *beg == '/') {
11108 while (beg < ptr)
11109 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
11110 }
11111 hash = full_hash(hash);
11112
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11113 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11114 smp->data.u.sint = hash;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]11115 smp->flags = SMP_F_VOL_1ST;
11116 return 1;
11117}
11118
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]11119/* This concatenates the source address with the 32-bit hash of the Host and
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11120 * path as returned by smp_fetch_base32(). The idea is to have per-source and
11121 * per-path counters. The result is a binary block from 8 to 20 bytes depending
11122 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]11123 * that in environments where IPv6 is insignificant, truncating the output to
11124 * 8 bytes would still work.
11125 */
11126static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11127smp_fetch_base32_src(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]11128{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]11129 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11130 struct connection *cli_conn = objt_conn(smp->sess->origin);
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11131
11132 if (!cli_conn)
11133 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]11134
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11135 if (!smp_fetch_base32(args, smp, kw, private))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]11136 return 0;
11137
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]11138 temp = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11139 *(unsigned int *)temp->str = htonl(smp->data.u.sint);
Willy Tarreau5ad6e1d2014-07-15 21:34:06 +0200[diff] [blame]11140 temp->len += sizeof(unsigned int);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]11141
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11142 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]11143 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11144 memcpy(temp->str + temp->len, &((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr, 4);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]11145 temp->len += 4;
11146 break;
11147 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11148 memcpy(temp->str + temp->len, &((struct sockaddr_in6 *)&cli_conn->addr.from)->sin6_addr, 16);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]11149 temp->len += 16;
11150 break;
11151 default:
11152 return 0;
11153 }
11154
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11155 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11156 smp->data.type = SMP_T_BIN;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]11157 return 1;
11158}
11159
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]11160/* Extracts the query string, which comes after the question mark '?'. If no
11161 * question mark is found, nothing is returned. Otherwise it returns a sample
11162 * of type string carrying the whole query string.
11163 */
11164static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11165smp_fetch_query(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]11166{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11167 struct http_txn *txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]11168 char *ptr, *end;
11169
11170 CHECK_HTTP_MESSAGE_FIRST();
11171
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11172 txn = smp->strm->txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]11173 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
11174 end = ptr + txn->req.sl.rq.u_l;
11175
11176 /* look up the '?' */
11177 do {
11178 if (ptr == end)
11179 return 0;
11180 } while (*ptr++ != '?');
11181
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11182 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11183 smp->data.u.str.str = ptr;
11184 smp->data.u.str.len = end - ptr;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]11185 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
11186 return 1;
11187}
11188
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]11189static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11190smp_fetch_proto_http(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]11191{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]11192 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
11193 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
11194 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]11195
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11196 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]11197
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11198 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11199 smp->data.u.sint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]11200 return 1;
11201}
11202
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]11203/* return a valid test if the current request is the first one on the connection */
11204static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11205smp_fetch_http_first_req(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]11206{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11207 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11208 smp->data.u.sint = !(smp->strm->txn->flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]11209 return 1;
11210}
11211
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11212/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11213static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11214smp_fetch_http_auth(const struct arg *args, struct sample *smp, const char *kw, void *private)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11215{
11216
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11217 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11218 return 0;
11219
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]11220 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11221
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11222 if (!get_http_auth(smp->strm))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11223 return 0;
11224
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11225 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11226 smp->data.u.sint = check_user(args->data.usr, smp->strm->txn->auth.user,
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11227 smp->strm->txn->auth.pass);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11228 return 1;
11229}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11230
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11231/* Accepts exactly 1 argument of type userlist */
11232static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11233smp_fetch_http_auth_grp(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11234{
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11235 if (!args || args->type != ARGT_USR)
11236 return 0;
11237
11238 CHECK_HTTP_MESSAGE_FIRST();
11239
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11240 if (!get_http_auth(smp->strm))
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11241 return 0;
11242
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11243 /* if the user does not belong to the userlist or has a wrong password,
11244 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]11245 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11246 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11247 if (!check_user(args->data.usr, smp->strm->txn->auth.user,
11248 smp->strm->txn->auth.pass))
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]11249 return 0;
11250
11251 /* pat_match_auth() will need the user list */
11252 smp->ctx.a[0] = args->data.usr;
11253
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11254 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11255 smp->flags = SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11256 smp->data.u.str.str = smp->strm->txn->auth.user;
11257 smp->data.u.str.len = strlen(smp->strm->txn->auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11258
11259 return 1;
11260}
11261
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11262/* Try to find the next occurrence of a cookie name in a cookie header value.
11263 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
11264 * the cookie value is returned into *value and *value_l, and the function
11265 * returns a pointer to the next pointer to search from if the value was found.
11266 * Otherwise if the cookie was not found, NULL is returned and neither value
11267 * nor value_l are touched. The input <hdr> string should first point to the
11268 * header's value, and the <hdr_end> pointer must point to the first character
11269 * not part of the value. <list> must be non-zero if value may represent a list
11270 * of values (cookie headers). This makes it faster to abort parsing when no
11271 * list is expected.
11272 */
David Carlier4686f792015-09-25 14:10:50 +0100[diff] [blame]11273char *
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11274extract_cookie_value(char *hdr, const char *hdr_end,
11275 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]11276 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11277{
11278 char *equal, *att_end, *att_beg, *val_beg, *val_end;
11279 char *next;
11280
11281 /* we search at least a cookie name followed by an equal, and more
11282 * generally something like this :
11283 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
11284 */
11285 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
11286 /* Iterate through all cookies on this line */
11287
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]11288 while (att_beg < hdr_end && HTTP_IS_SPHT(*att_beg))
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11289 att_beg++;
11290
11291 /* find att_end : this is the first character after the last non
11292 * space before the equal. It may be equal to hdr_end.
11293 */
11294 equal = att_end = att_beg;
11295
11296 while (equal < hdr_end) {
11297 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
11298 break;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]11299 if (HTTP_IS_SPHT(*equal++))
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11300 continue;
11301 att_end = equal;
11302 }
11303
11304 /* here, <equal> points to '=', a delimitor or the end. <att_end>
11305 * is between <att_beg> and <equal>, both may be identical.
11306 */
11307
11308 /* look for end of cookie if there is an equal sign */
11309 if (equal < hdr_end && *equal == '=') {
11310 /* look for the beginning of the value */
11311 val_beg = equal + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]11312 while (val_beg < hdr_end && HTTP_IS_SPHT(*val_beg))
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11313 val_beg++;
11314
11315 /* find the end of the value, respecting quotes */
11316 next = find_cookie_value_end(val_beg, hdr_end);
11317
11318 /* make val_end point to the first white space or delimitor after the value */
11319 val_end = next;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]11320 while (val_end > val_beg && HTTP_IS_SPHT(*(val_end - 1)))
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11321 val_end--;
11322 } else {
11323 val_beg = val_end = next = equal;
11324 }
11325
11326 /* We have nothing to do with attributes beginning with '$'. However,
11327 * they will automatically be removed if a header before them is removed,
11328 * since they're supposed to be linked together.
11329 */
11330 if (*att_beg == '$')
11331 continue;
11332
11333 /* Ignore cookies with no equal sign */
11334 if (equal == next)
11335 continue;
11336
11337 /* Now we have the cookie name between att_beg and att_end, and
11338 * its value between val_beg and val_end.
11339 */
11340
11341 if (att_end - att_beg == cookie_name_l &&
11342 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
11343 /* let's return this value and indicate where to go on from */
11344 *value = val_beg;
11345 *value_l = val_end - val_beg;
11346 return next + 1;
11347 }
11348
11349 /* Set-Cookie headers only have the name in the first attr=value part */
11350 if (!list)
11351 break;
11352 }
11353
11354 return NULL;
11355}
11356
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11357/* Fetch a captured HTTP request header. The index is the position of
11358 * the "capture" option in the configuration file
11359 */
11360static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11361smp_fetch_capture_header_req(const struct arg *args, struct sample *smp, const char *kw, void *private)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11362{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11363 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11364 int idx;
11365
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11366 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11367 return 0;
11368
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11369 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11370
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11371 if (idx > (fe->nb_req_cap - 1) || smp->strm->req_cap == NULL || smp->strm->req_cap[idx] == NULL)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11372 return 0;
11373
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11374 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11375 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11376 smp->data.u.str.str = smp->strm->req_cap[idx];
11377 smp->data.u.str.len = strlen(smp->strm->req_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11378
11379 return 1;
11380}
11381
11382/* Fetch a captured HTTP response header. The index is the position of
11383 * the "capture" option in the configuration file
11384 */
11385static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11386smp_fetch_capture_header_res(const struct arg *args, struct sample *smp, const char *kw, void *private)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11387{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11388 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11389 int idx;
11390
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11391 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11392 return 0;
11393
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11394 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11395
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11396 if (idx > (fe->nb_rsp_cap - 1) || smp->strm->res_cap == NULL || smp->strm->res_cap[idx] == NULL)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11397 return 0;
11398
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11399 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11400 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11401 smp->data.u.str.str = smp->strm->res_cap[idx];
11402 smp->data.u.str.len = strlen(smp->strm->res_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11403
11404 return 1;
11405}
11406
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11407/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
11408static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11409smp_fetch_capture_req_method(const struct arg *args, struct sample *smp, const char *kw, void *private)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11410{
11411 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11412 struct http_txn *txn = smp->strm->txn;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11413 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11414
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11415 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11416 return 0;
11417
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11418 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11419
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11420 while (*ptr != ' ' && *ptr != '\0') /* find first space */
11421 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11422
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11423 temp = get_trash_chunk();
11424 temp->str = txn->uri;
11425 temp->len = ptr - txn->uri;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11426 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11427 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11428 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11429
11430 return 1;
11431
11432}
11433
11434/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
11435static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11436smp_fetch_capture_req_uri(const struct arg *args, struct sample *smp, const char *kw, void *private)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11437{
11438 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11439 struct http_txn *txn = smp->strm->txn;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11440 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11441
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11442 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11443 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11444
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11445 ptr = txn->uri;
11446
11447 while (*ptr != ' ' && *ptr != '\0') /* find first space */
11448 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11449
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11450 if (!*ptr)
11451 return 0;
11452
11453 ptr++; /* skip the space */
11454
11455 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11456 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11457 if (!ptr)
11458 return 0;
11459 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
11460 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11461
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11462 smp->data.u.str = *temp;
11463 smp->data.u.str.len = ptr - temp->str;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11464 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11465 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11466
11467 return 1;
11468}
11469
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11470/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
11471 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11472 */
11473static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11474smp_fetch_capture_req_ver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11475{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11476 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11477
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11478 if (!txn || txn->req.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11479 return 0;
11480
11481 if (txn->req.flags & HTTP_MSGF_VER_11)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11482 smp->data.u.str.str = "HTTP/1.1";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11483 else
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11484 smp->data.u.str.str = "HTTP/1.0";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11485
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11486 smp->data.u.str.len = 8;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11487 smp->data.type = SMP_T_STR;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11488 smp->flags = SMP_F_CONST;
11489 return 1;
11490
11491}
11492
11493/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
11494 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11495 */
11496static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11497smp_fetch_capture_res_ver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11498{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11499 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11500
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11501 if (!txn || txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11502 return 0;
11503
11504 if (txn->rsp.flags & HTTP_MSGF_VER_11)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11505 smp->data.u.str.str = "HTTP/1.1";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11506 else
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11507 smp->data.u.str.str = "HTTP/1.0";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11508
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11509 smp->data.u.str.len = 8;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11510 smp->data.type = SMP_T_STR;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11511 smp->flags = SMP_F_CONST;
11512 return 1;
11513
11514}
11515
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11516
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11517/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11518 * smp->ctx.a[0] for the in-header position, smp->ctx.a[1] for the
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11519 * end-of-header-value, and smp->ctx.a[2] for the hdr_ctx. Depending on
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11520 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11521 * The cookie name is in args and the name length in args->data.str.len.
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11522 * Accepts exactly 1 argument of type string. If the input options indicate
11523 * that no iterating is desired, then only last value is fetched if any.
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]11524 * The returned sample is of type CSTR. Can be used to parse cookies in other
11525 * files.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11526 */
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11527int smp_fetch_cookie(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11528{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11529 struct http_txn *txn;
11530 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11531 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11532 const struct http_msg *msg;
11533 const char *hdr_name;
11534 int hdr_name_len;
11535 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11536 int occ = 0;
11537 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11538
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11539 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11540 return 0;
11541
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11542 if (!ctx) {
11543 /* first call */
11544 ctx = &static_hdr_ctx;
11545 ctx->idx = 0;
11546 smp->ctx.a[2] = ctx;
11547 }
11548
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11549 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11550
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11551 txn = smp->strm->txn;
11552 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11553
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11554 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11555 msg = &txn->req;
11556 hdr_name = "Cookie";
11557 hdr_name_len = 6;
11558 } else {
11559 msg = &txn->rsp;
11560 hdr_name = "Set-Cookie";
11561 hdr_name_len = 10;
11562 }
11563
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11564 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11565 /* no explicit occurrence and single fetch => last cookie by default */
11566 occ = -1;
11567
11568 /* OK so basically here, either we want only one value and it's the
11569 * last one, or we want to iterate over all of them and we fetch the
11570 * next one.
11571 */
11572
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11573 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11574 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11575 /* search for the header from the beginning, we must first initialize
11576 * the search parameters.
11577 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11578 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11579 ctx->idx = 0;
11580 }
11581
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11582 smp->flags |= SMP_F_VOL_HDR;
11583
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11584 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11585 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
11586 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11587 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
11588 goto out;
11589
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11590 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11591 continue;
11592
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11593 smp->ctx.a[0] = ctx->line + ctx->val;
11594 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11595 }
11596
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11597 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11598 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11599 smp->ctx.a[0] = extract_cookie_value(smp->ctx.a[0], smp->ctx.a[1],
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11600 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11601 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11602 &smp->data.u.str.str,
11603 &smp->data.u.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11604 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11605 found = 1;
11606 if (occ >= 0) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11607 /* one value was returned into smp->data.u.str.{str,len} */
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11608 smp->flags |= SMP_F_NOT_LAST;
11609 return 1;
11610 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11611 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11612 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11613 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11614 /* all cookie headers and values were scanned. If we're looking for the
11615 * last occurrence, we may return it now.
11616 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11617 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11618 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11619 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11620}
11621
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11622/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11623 * match the name in args and args->data.str.len. If <multi> is non-null, then
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]11624 * multiple cookies may be parsed on the same line. The returned sample is of
11625 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11626 */
11627static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11628smp_fetch_cookie_cnt(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11629{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11630 struct http_txn *txn;
11631 struct hdr_idx *idx;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11632 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11633 const struct http_msg *msg;
11634 const char *hdr_name;
11635 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11636 int cnt;
11637 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11638 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11639
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11640 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11641 return 0;
11642
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11643 CHECK_HTTP_MESSAGE_FIRST();
11644
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11645 txn = smp->strm->txn;
11646 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11647
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11648 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11649 msg = &txn->req;
11650 hdr_name = "Cookie";
11651 hdr_name_len = 6;
11652 } else {
11653 msg = &txn->rsp;
11654 hdr_name = "Set-Cookie";
11655 hdr_name_len = 10;
11656 }
11657
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11658 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]11659 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11660 ctx.idx = 0;
11661 cnt = 0;
11662
11663 while (1) {
11664 /* Note: val_beg == NULL every time we need to fetch a new header */
11665 if (!val_beg) {
11666 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
11667 break;
11668
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11669 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11670 continue;
11671
11672 val_beg = ctx.line + ctx.val;
11673 val_end = val_beg + ctx.vlen;
11674 }
11675
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11676 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11677 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11678 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11679 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11680 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11681 &smp->data.u.str.str,
11682 &smp->data.u.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11683 cnt++;
11684 }
11685 }
11686
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11687 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11688 smp->data.u.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11689 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11690 return 1;
11691}
11692
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11693/* Fetch an cookie's integer value. The integer value is returned. It
11694 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
11695 */
11696static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11697smp_fetch_cookie_val(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11698{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11699 int ret = smp_fetch_cookie(args, smp, kw, private);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11700
11701 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11702 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11703 smp->data.u.sint = strl2ic(smp->data.u.str.str, smp->data.u.str.len);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11704 }
11705
11706 return ret;
11707}
11708
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11709/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]11710/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11711/************************************************************************/
11712
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11713/*
11714 * Given a path string and its length, find the position of beginning of the
11715 * query string. Returns NULL if no query string is found in the path.
11716 *
11717 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
11718 *
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11719 * find_query_string(path, n, '?') points to "yo=mama;ye=daddy" string.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11720 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11721static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11722{
11723 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]11724
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11725 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11726 return p ? p + 1 : NULL;
11727}
11728
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11729static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11730{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11731 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11732}
11733
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11734/* after increasing a pointer value, it can exceed the first buffer
11735 * size. This function transform the value of <ptr> according with
11736 * the expected position. <chunks> is an array of the one or two
11737 * avalaible chunks. The first value is the start of the first chunk,
11738 * the second value if the end+1 of the first chunks. The third value
11739 * is NULL or the start of the second chunk and the fourth value is
11740 * the end+1 of the second chunk. The function returns 1 if does a
11741 * wrap, else returns 0.
11742 */
11743static inline int fix_pointer_if_wrap(const char **chunks, const char **ptr)
11744{
11745 if (*ptr < chunks[1])
11746 return 0;
11747 if (!chunks[2])
11748 return 0;
11749 *ptr = chunks[2] + ( *ptr - chunks[1] );
11750 return 1;
11751}
11752
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11753/*
11754 * Given a url parameter, find the starting position of the first occurence,
11755 * or NULL if the parameter is not found.
11756 *
11757 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
11758 * the function will return query_string+8.
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11759 *
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11760 * Warning: this function returns a pointer that can point to the first chunk
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11761 * or the second chunk. The caller must be check the position before using the
11762 * result.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11763 */
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11764static const char *
11765find_url_param_pos(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11766 const char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11767 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11768{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11769 const char *pos, *last, *equal;
11770 const char **bufs = chunks;
11771 int l1, l2;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11772
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11773
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11774 pos = bufs[0];
11775 last = bufs[1];
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11776 while (pos < last) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11777 /* Check the equal. */
11778 equal = pos + url_param_name_l;
11779 if (fix_pointer_if_wrap(chunks, &equal)) {
11780 if (equal >= chunks[3])
11781 return NULL;
11782 } else {
11783 if (equal >= chunks[1])
11784 return NULL;
11785 }
11786 if (*equal == '=') {
11787 if (pos + url_param_name_l > last) {
11788 /* process wrap case, we detect a wrap. In this case, the
11789 * comparison is performed in two parts.
11790 */
11791
11792 /* This is the end, we dont have any other chunk. */
11793 if (bufs != chunks || !bufs[2])
11794 return NULL;
11795
11796 /* Compute the length of each part of the comparison. */
11797 l1 = last - pos;
11798 l2 = url_param_name_l - l1;
11799
11800 /* The second buffer is too short to contain the compared string. */
11801 if (bufs[2] + l2 > bufs[3])
11802 return NULL;
11803
11804 if (memcmp(pos, url_param_name, l1) == 0 &&
11805 memcmp(bufs[2], url_param_name+l1, l2) == 0)
11806 return pos;
11807
11808 /* Perform wrapping and jump the string who fail the comparison. */
11809 bufs += 2;
11810 pos = bufs[0] + l2;
11811 last = bufs[1];
11812
11813 } else {
11814 /* process a simple comparison. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11815 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
11816 return pos;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11817 pos += url_param_name_l + 1;
11818 if (fix_pointer_if_wrap(chunks, &pos))
11819 last = bufs[2];
11820 }
11821 }
11822
11823 while (1) {
11824 /* Look for the next delimiter. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11825 while (pos < last && !is_param_delimiter(*pos, delim))
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11826 pos++;
11827 if (pos < last)
11828 break;
11829 /* process buffer wrapping. */
11830 if (bufs != chunks || !bufs[2])
11831 return NULL;
11832 bufs += 2;
11833 pos = bufs[0];
11834 last = bufs[1];
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11835 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11836 pos++;
11837 }
11838 return NULL;
11839}
11840
11841/*
Cyril Bontéce1ef4d2015-11-26 21:39:56 +0100[diff] [blame]11842 * Given a url parameter name and a query string, find the next value.
11843 * An empty url_param_name matches the first available parameter.
11844 * If the parameter is found, 1 is returned and *vstart / *vend are updated to
11845 * respectively provide a pointer to the value and its end.
11846 * Otherwise, 0 is returned and vstart/vend are not modified.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11847 */
11848static int
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11849find_next_url_param(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11850 const char* url_param_name, size_t url_param_name_l,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11851 const char **vstart, const char **vend, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11852{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11853 const char *arg_start, *qs_end;
11854 const char *value_start, *value_end;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11855
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11856 arg_start = chunks[0];
11857 qs_end = chunks[1];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11858 if (url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11859 /* Looks for an argument name. */
11860 arg_start = find_url_param_pos(chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11861 url_param_name, url_param_name_l,
11862 delim);
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11863 /* Check for wrapping. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11864 if (arg_start >= qs_end)
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11865 qs_end = chunks[3];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11866 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11867 if (!arg_start)
11868 return 0;
11869
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11870 if (!url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11871 while (1) {
11872 /* looks for the first argument. */
11873 value_start = memchr(arg_start, '=', qs_end - arg_start);
11874 if (!value_start) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11875 /* Check for wrapping. */
11876 if (arg_start >= chunks[0] &&
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11877 arg_start < chunks[1] &&
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11878 chunks[2]) {
11879 arg_start = chunks[2];
11880 qs_end = chunks[3];
11881 continue;
11882 }
11883 return 0;
11884 }
11885 break;
11886 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11887 value_start++;
11888 }
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11889 else {
11890 /* Jump the argument length. */
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11891 value_start = arg_start + url_param_name_l + 1;
11892
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11893 /* Check for pointer wrapping. */
11894 if (fix_pointer_if_wrap(chunks, &value_start)) {
11895 /* Update the end pointer. */
11896 qs_end = chunks[3];
11897
11898 /* Check for overflow. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11899 if (value_start >= qs_end)
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11900 return 0;
11901 }
11902 }
11903
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11904 value_end = value_start;
11905
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11906 while (1) {
11907 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
11908 value_end++;
11909 if (value_end < qs_end)
11910 break;
11911 /* process buffer wrapping. */
11912 if (value_end >= chunks[0] &&
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11913 value_end < chunks[1] &&
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11914 chunks[2]) {
11915 value_end = chunks[2];
11916 qs_end = chunks[3];
11917 continue;
11918 }
11919 break;
11920 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11921
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11922 *vstart = value_start;
11923 *vend = value_end;
Cyril Bontéce1ef4d2015-11-26 21:39:56 +0100[diff] [blame]11924 return 1;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11925}
11926
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11927/* This scans a URL-encoded query string. It takes an optionally wrapping
11928 * string whose first contigous chunk has its beginning in ctx->a[0] and end
11929 * in ctx->a[1], and the optional second part in (ctx->a[2]..ctx->a[3]). The
11930 * pointers are updated for next iteration before leaving.
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11931 */
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11932static int
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11933smp_fetch_param(char delim, const char *name, int name_len, const struct arg *args, struct sample *smp, const char *kw, void *private)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11934{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11935 const char *vstart, *vend;
11936 struct chunk *temp;
11937 const char **chunks = (const char **)smp->ctx.a;
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11938
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11939 if (!find_next_url_param(chunks,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11940 name, name_len,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11941 &vstart, &vend,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11942 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11943 return 0;
11944
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11945 /* Create sample. If the value is contiguous, return the pointer as CONST,
11946 * if the value is wrapped, copy-it in a buffer.
11947 */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11948 smp->data.type = SMP_T_STR;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11949 if (chunks[2] &&
11950 vstart >= chunks[0] && vstart <= chunks[1] &&
11951 vend >= chunks[2] && vend <= chunks[3]) {
11952 /* Wrapped case. */
11953 temp = get_trash_chunk();
11954 memcpy(temp->str, vstart, chunks[1] - vstart);
11955 memcpy(temp->str + ( chunks[1] - vstart ), chunks[2], vend - chunks[2]);
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11956 smp->data.u.str.str = temp->str;
11957 smp->data.u.str.len = ( chunks[1] - vstart ) + ( vend - chunks[2] );
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11958 } else {
11959 /* Contiguous case. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11960 smp->data.u.str.str = (char *)vstart;
11961 smp->data.u.str.len = vend - vstart;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11962 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
11963 }
11964
11965 /* Update context, check wrapping. */
11966 chunks[0] = vend;
11967 if (chunks[2] && vend >= chunks[2] && vend <= chunks[3]) {
11968 chunks[1] = chunks[3];
11969 chunks[2] = NULL;
11970 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11971
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11972 if (chunks[0] < chunks[1])
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11973 smp->flags |= SMP_F_NOT_LAST;
11974
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11975 return 1;
11976}
11977
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11978/* This function iterates over each parameter of the query string. It uses
11979 * ctx->a[0] and ctx->a[1] to store the beginning and end of the current
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11980 * parameter. Since it uses smp_fetch_param(), ctx->a[2..3] are both NULL.
11981 * An optional parameter name is passed in args[0], otherwise any parameter is
11982 * considered. It supports an optional delimiter argument for the beginning of
11983 * the string in args[1], which defaults to "?".
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11984 */
11985static int
11986smp_fetch_url_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11987{
11988 struct http_msg *msg;
11989 char delim = '?';
11990 const char *name;
11991 int name_len;
11992
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11993 if (!args ||
11994 (args[0].type && args[0].type != ARGT_STR) ||
11995 (args[1].type && args[1].type != ARGT_STR))
11996 return 0;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11997
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11998 name = "";
11999 name_len = 0;
12000 if (args->type == ARGT_STR) {
12001 name = args->data.str.str;
12002 name_len = args->data.str.len;
12003 }
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]12004
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]12005 if (args[1].type)
12006 delim = *args[1].data.str.str;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]12007
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]12008 if (!smp->ctx.a[0]) { // first call, find the query string
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]12009 CHECK_HTTP_MESSAGE_FIRST();
12010
12011 msg = &smp->strm->txn->req;
12012
12013 smp->ctx.a[0] = find_param_list(msg->chn->buf->p + msg->sl.rq.u,
12014 msg->sl.rq.u_l, delim);
12015 if (!smp->ctx.a[0])
12016 return 0;
12017
12018 smp->ctx.a[1] = msg->chn->buf->p + msg->sl.rq.u + msg->sl.rq.u_l;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]12019
12020 /* Assume that the context is filled with NULL pointer
12021 * before the first call.
12022 * smp->ctx.a[2] = NULL;
12023 * smp->ctx.a[3] = NULL;
12024 */
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]12025 }
12026
12027 return smp_fetch_param(delim, name, name_len, args, smp, kw, private);
12028}
12029
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]12030/* This function iterates over each parameter of the body. This requires
12031 * that the body has been waited for using http-buffer-request. It uses
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]12032 * ctx->a[0] and ctx->a[1] to store the beginning and end of the first
12033 * contigous part of the body, and optionally ctx->a[2..3] to reference the
12034 * optional second part if the body wraps at the end of the buffer. An optional
12035 * parameter name is passed in args[0], otherwise any parameter is considered.
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]12036 */
12037static int
12038smp_fetch_body_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
12039{
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]12040 struct http_msg *msg;
12041 unsigned long len;
12042 unsigned long block1;
12043 char *body;
12044 const char *name;
12045 int name_len;
12046
12047 if (!args || (args[0].type && args[0].type != ARGT_STR))
12048 return 0;
12049
12050 name = "";
12051 name_len = 0;
12052 if (args[0].type == ARGT_STR) {
12053 name = args[0].data.str.str;
12054 name_len = args[0].data.str.len;
12055 }
12056
12057 if (!smp->ctx.a[0]) { // first call, find the query string
12058 CHECK_HTTP_MESSAGE_FIRST();
12059
12060 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]12061 msg = &smp->strm->txn->req;
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]12062 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]12063 msg = &smp->strm->txn->rsp;
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]12064
12065 len = http_body_bytes(msg);
12066 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
12067
12068 block1 = len;
12069 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
12070 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
12071
12072 if (block1 == len) {
12073 /* buffer is not wrapped (or empty) */
12074 smp->ctx.a[0] = body;
12075 smp->ctx.a[1] = body + len;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]12076
12077 /* Assume that the context is filled with NULL pointer
12078 * before the first call.
12079 * smp->ctx.a[2] = NULL;
12080 * smp->ctx.a[3] = NULL;
12081 */
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]12082 }
12083 else {
12084 /* buffer is wrapped, we need to defragment it */
12085 smp->ctx.a[0] = body;
12086 smp->ctx.a[1] = body + block1;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]12087 smp->ctx.a[2] = msg->chn->buf->data;
12088 smp->ctx.a[3] = msg->chn->buf->data + ( len - block1 );
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]12089 }
12090 }
12091 return smp_fetch_param('&', name, name_len, args, smp, kw, private);
12092}
12093
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]12094/* Return the signed integer value for the specified url parameter (see url_param
12095 * above).
12096 */
12097static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]12098smp_fetch_url_param_val(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]12099{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]12100 int ret = smp_fetch_url_param(args, smp, kw, private);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]12101
12102 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]12103 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12104 smp->data.u.sint = strl2ic(smp->data.u.str.str, smp->data.u.str.len);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]12105 }
12106
12107 return ret;
12108}
12109
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12110/* This produces a 32-bit hash of the concatenation of the first occurrence of
12111 * the Host header followed by the path component if it begins with a slash ('/').
12112 * This means that '*' will not be added, resulting in exactly the first Host
12113 * entry. If no Host header is found, then the path is used. The resulting value
12114 * is hashed using the url hash followed by a full avalanche hash and provides a
12115 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
12116 * high-traffic sites without having to store whole paths.
12117 * this differs from the base32 functions in that it includes the url parameters
12118 * as well as the path
12119 */
12120static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]12121smp_fetch_url32(const struct arg *args, struct sample *smp, const char *kw, void *private)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12122{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]12123 struct http_txn *txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12124 struct hdr_ctx ctx;
12125 unsigned int hash = 0;
12126 char *ptr, *beg, *end;
12127 int len;
12128
12129 CHECK_HTTP_MESSAGE_FIRST();
12130
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12131 txn = smp->strm->txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12132 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]12133 if (http_find_header2("Host", 4, txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12134 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
12135 ptr = ctx.line + ctx.val;
12136 len = ctx.vlen;
12137 while (len--)
12138 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
12139 }
12140
12141 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]12142 end = txn->req.chn->buf->p + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12143 beg = http_get_path(txn);
12144 if (!beg)
12145 beg = end;
12146
12147 for (ptr = beg; ptr < end ; ptr++);
12148
12149 if (beg < ptr && *beg == '/') {
12150 while (beg < ptr)
12151 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
12152 }
12153 hash = full_hash(hash);
12154
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]12155 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12156 smp->data.u.sint = hash;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12157 smp->flags = SMP_F_VOL_1ST;
12158 return 1;
12159}
12160
12161/* This concatenates the source address with the 32-bit hash of the Host and
12162 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
12163 * per-url counters. The result is a binary block from 8 to 20 bytes depending
12164 * on the source address length. The URL hash is stored before the address so
12165 * that in environments where IPv6 is insignificant, truncating the output to
12166 * 8 bytes would still work.
12167 */
12168static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]12169smp_fetch_url32_src(const struct arg *args, struct sample *smp, const char *kw, void *private)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12170{
12171 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12172 struct connection *cli_conn = objt_conn(smp->sess->origin);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12173
Dragan Dosendb5af612016-06-16 11:23:01 +0200[diff] [blame]12174 if (!cli_conn)
12175 return 0;
12176
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]12177 if (!smp_fetch_url32(args, smp, kw, private))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12178 return 0;
12179
12180 temp = get_trash_chunk();
Dragan Dosene5f41332016-06-16 11:08:08 +0200[diff] [blame]12181 *(unsigned int *)temp->str = htonl(smp->data.u.sint);
12182 temp->len += sizeof(unsigned int);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12183
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]12184 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12185 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]12186 memcpy(temp->str + temp->len, &((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr, 4);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12187 temp->len += 4;
12188 break;
12189 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]12190 memcpy(temp->str + temp->len, &((struct sockaddr_in6 *)&cli_conn->addr.from)->sin6_addr, 16);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12191 temp->len += 16;
12192 break;
12193 default:
12194 return 0;
12195 }
12196
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12197 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]12198 smp->data.type = SMP_T_BIN;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12199 return 1;
12200}
12201
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]12202/* This function is used to validate the arguments passed to any "hdr" fetch
12203 * keyword. These keywords support an optional positive or negative occurrence
12204 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
12205 * is assumed that the types are already the correct ones. Returns 0 on error,
12206 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
12207 * error message in case of error, that the caller is responsible for freeing.
12208 * The initial location must either be freeable or NULL.
12209 */
Thierry FOURNIER49f45af2014-12-08 19:50:43 +0100[diff] [blame]12210int val_hdr(struct arg *arg, char **err_msg)
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]12211{
12212 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]12213 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]12214 return 0;
12215 }
12216 return 1;
12217}
12218
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12219/* takes an UINT value on input supposed to represent the time since EPOCH,
12220 * adds an optional offset found in args[0] and emits a string representing
12221 * the date in RFC-1123/5322 format.
12222 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12223static int sample_conv_http_date(const struct arg *args, struct sample *smp, void *private)
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12224{
Cyril Bontéf78d8962016-01-22 19:40:28 +0100[diff] [blame]12225 const char day[7][4] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12226 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
12227 struct chunk *temp;
12228 struct tm *tm;
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12229 /* With high numbers, the date returned can be negative, the 55 bits mask prevent this. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12230 time_t curr_date = smp->data.u.sint & 0x007fffffffffffffLL;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12231
12232 /* add offset */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12233 if (args && (args[0].type == ARGT_SINT))
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12234 curr_date += args[0].data.sint;
12235
12236 tm = gmtime(&curr_date);
Thierry FOURNIERfac9ccf2015-07-08 00:15:20 +0200[diff] [blame]12237 if (!tm)
12238 return 0;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12239
12240 temp = get_trash_chunk();
12241 temp->len = snprintf(temp->str, temp->size - temp->len,
12242 "%s, %02d %s %04d %02d:%02d:%02d GMT",
12243 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
12244 tm->tm_hour, tm->tm_min, tm->tm_sec);
12245
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12246 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]12247 smp->data.type = SMP_T_STR;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12248 return 1;
12249}
12250
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12251/* Match language range with language tag. RFC2616 14.4:
12252 *
12253 * A language-range matches a language-tag if it exactly equals
12254 * the tag, or if it exactly equals a prefix of the tag such
12255 * that the first tag character following the prefix is "-".
12256 *
12257 * Return 1 if the strings match, else return 0.
12258 */
12259static inline int language_range_match(const char *range, int range_len,
12260 const char *tag, int tag_len)
12261{
12262 const char *end = range + range_len;
12263 const char *tend = tag + tag_len;
12264 while (range < end) {
12265 if (*range == '-' && tag == tend)
12266 return 1;
12267 if (*range != *tag || tag == tend)
12268 return 0;
12269 range++;
12270 tag++;
12271 }
12272 /* Return true only if the last char of the tag is matched. */
12273 return tag == tend;
12274}
12275
12276/* Arguments: The list of expected value, the number of parts returned and the separator */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12277static int sample_conv_q_prefered(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12278{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12279 const char *al = smp->data.u.str.str;
12280 const char *end = al + smp->data.u.str.len;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12281 const char *token;
12282 int toklen;
12283 int qvalue;
12284 const char *str;
12285 const char *w;
12286 int best_q = 0;
12287
12288 /* Set the constant to the sample, because the output of the
12289 * function will be peek in the constant configuration string.
12290 */
12291 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12292 smp->data.u.str.size = 0;
12293 smp->data.u.str.str = "";
12294 smp->data.u.str.len = 0;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12295
12296 /* Parse the accept language */
12297 while (1) {
12298
12299 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12300 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12301 al++;
12302 if (al >= end)
12303 break;
12304
12305 /* Start of the fisrt word. */
12306 token = al;
12307
12308 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12309 while (al < end && *al != ';' && *al != ',' && !isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12310 al++;
12311 if (al == token)
12312 goto expect_comma;
12313
12314 /* Length of the token. */
12315 toklen = al - token;
12316 qvalue = 1000;
12317
12318 /* Check if the token exists in the list. If the token not exists,
12319 * jump to the next token.
12320 */
12321 str = args[0].data.str.str;
12322 w = str;
12323 while (1) {
12324 if (*str == ';' || *str == '\0') {
12325 if (language_range_match(token, toklen, w, str-w))
12326 goto look_for_q;
12327 if (*str == '\0')
12328 goto expect_comma;
12329 w = str + 1;
12330 }
12331 str++;
12332 }
12333 goto expect_comma;
12334
12335look_for_q:
12336
12337 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12338 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12339 al++;
12340 if (al >= end)
12341 goto process_value;
12342
12343 /* If ',' is found, process the result */
12344 if (*al == ',')
12345 goto process_value;
12346
12347 /* If the character is different from ';', look
12348 * for the end of the header part in best effort.
12349 */
12350 if (*al != ';')
12351 goto expect_comma;
12352
12353 /* Assumes that the char is ';', now expect "q=". */
12354 al++;
12355
12356 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12357 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12358 al++;
12359 if (al >= end)
12360 goto process_value;
12361
12362 /* Expect 'q'. If no 'q', continue in best effort */
12363 if (*al != 'q')
12364 goto process_value;
12365 al++;
12366
12367 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12368 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12369 al++;
12370 if (al >= end)
12371 goto process_value;
12372
12373 /* Expect '='. If no '=', continue in best effort */
12374 if (*al != '=')
12375 goto process_value;
12376 al++;
12377
12378 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12379 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12380 al++;
12381 if (al >= end)
12382 goto process_value;
12383
12384 /* Parse the q value. */
12385 qvalue = parse_qvalue(al, &al);
12386
12387process_value:
12388
12389 /* If the new q value is the best q value, then store the associated
12390 * language in the response. If qvalue is the biggest value (1000),
12391 * break the process.
12392 */
12393 if (qvalue > best_q) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12394 smp->data.u.str.str = (char *)w;
12395 smp->data.u.str.len = str - w;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12396 if (qvalue >= 1000)
12397 break;
12398 best_q = qvalue;
12399 }
12400
12401expect_comma:
12402
12403 /* Expect comma or end. If the end is detected, quit the loop. */
12404 while (al < end && *al != ',')
12405 al++;
12406 if (al >= end)
12407 break;
12408
12409 /* Comma is found, jump it and restart the analyzer. */
12410 al++;
12411 }
12412
12413 /* Set default value if required. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12414 if (smp->data.u.str.len == 0 && args[1].type == ARGT_STR) {
12415 smp->data.u.str.str = args[1].data.str.str;
12416 smp->data.u.str.len = args[1].data.str.len;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12417 }
12418
12419 /* Return true only if a matching language was found. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12420 return smp->data.u.str.len != 0;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12421}
12422
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12423/* This fetch url-decode any input string. */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12424static int sample_conv_url_dec(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12425{
12426 /* If the constant flag is set or if not size is avalaible at
12427 * the end of the buffer, copy the string in other buffer
12428 * before decoding.
12429 */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12430 if (smp->flags & SMP_F_CONST || smp->data.u.str.size <= smp->data.u.str.len) {
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12431 struct chunk *str = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12432 memcpy(str->str, smp->data.u.str.str, smp->data.u.str.len);
12433 smp->data.u.str.str = str->str;
12434 smp->data.u.str.size = str->size;
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12435 smp->flags &= ~SMP_F_CONST;
12436 }
12437
12438 /* Add final \0 required by url_decode(), and convert the input string. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12439 smp->data.u.str.str[smp->data.u.str.len] = '\0';
12440 smp->data.u.str.len = url_decode(smp->data.u.str.str);
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12441 return 1;
12442}
12443
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12444static int smp_conv_req_capture(const struct arg *args, struct sample *smp, void *private)
12445{
12446 struct proxy *fe = strm_fe(smp->strm);
12447 int idx, i;
12448 struct cap_hdr *hdr;
12449 int len;
12450
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12451 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12452 return 0;
12453
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12454 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12455
12456 /* Check the availibity of the capture id. */
12457 if (idx > fe->nb_req_cap - 1)
12458 return 0;
12459
12460 /* Look for the original configuration. */
12461 for (hdr = fe->req_cap, i = fe->nb_req_cap - 1;
12462 hdr != NULL && i != idx ;
12463 i--, hdr = hdr->next);
12464 if (!hdr)
12465 return 0;
12466
12467 /* check for the memory allocation */
12468 if (smp->strm->req_cap[hdr->index] == NULL)
12469 smp->strm->req_cap[hdr->index] = pool_alloc2(hdr->pool);
12470 if (smp->strm->req_cap[hdr->index] == NULL)
12471 return 0;
12472
12473 /* Check length. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12474 len = smp->data.u.str.len;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12475 if (len > hdr->len)
12476 len = hdr->len;
12477
12478 /* Capture input data. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12479 memcpy(smp->strm->req_cap[idx], smp->data.u.str.str, len);
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12480 smp->strm->req_cap[idx][len] = '\0';
12481
12482 return 1;
12483}
12484
12485static int smp_conv_res_capture(const struct arg *args, struct sample *smp, void *private)
12486{
12487 struct proxy *fe = strm_fe(smp->strm);
12488 int idx, i;
12489 struct cap_hdr *hdr;
12490 int len;
12491
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12492 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12493 return 0;
12494
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12495 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12496
12497 /* Check the availibity of the capture id. */
12498 if (idx > fe->nb_rsp_cap - 1)
12499 return 0;
12500
12501 /* Look for the original configuration. */
12502 for (hdr = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
12503 hdr != NULL && i != idx ;
12504 i--, hdr = hdr->next);
12505 if (!hdr)
12506 return 0;
12507
12508 /* check for the memory allocation */
12509 if (smp->strm->res_cap[hdr->index] == NULL)
12510 smp->strm->res_cap[hdr->index] = pool_alloc2(hdr->pool);
12511 if (smp->strm->res_cap[hdr->index] == NULL)
12512 return 0;
12513
12514 /* Check length. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12515 len = smp->data.u.str.len;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12516 if (len > hdr->len)
12517 len = hdr->len;
12518
12519 /* Capture input data. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12520 memcpy(smp->strm->res_cap[idx], smp->data.u.str.str, len);
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12521 smp->strm->res_cap[idx][len] = '\0';
12522
12523 return 1;
12524}
12525
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12526/* This function executes one of the set-{method,path,query,uri} actions. It
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12527 * takes the string from the variable 'replace' with length 'len', then modifies
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12528 * the relevant part of the request line accordingly. Then it updates various
12529 * pointers to the next elements which were moved, and the total buffer length.
12530 * It finds the action to be performed in p[2], previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12531 * parse_set_req_line(). It returns 0 in case of success, -1 in case of internal
12532 * error, though this can be revisited when this code is finally exploited.
12533 *
12534 * 'action' can be '0' to replace method, '1' to replace path, '2' to replace
12535 * query string and 3 to replace uri.
12536 *
12537 * In query string case, the mark question '?' must be set at the start of the
12538 * string by the caller, event if the replacement query string is empty.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12539 */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12540int http_replace_req_line(int action, const char *replace, int len,
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12541 struct proxy *px, struct stream *s)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12542{
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12543 struct http_txn *txn = s->txn;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12544 char *cur_ptr, *cur_end;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12545 int offset = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12546 int delta;
12547
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12548 switch (action) {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12549 case 0: // method
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12550 cur_ptr = s->req.buf->p;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12551 cur_end = cur_ptr + txn->req.sl.rq.m_l;
12552
12553 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12554 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12555 txn->req.sl.rq.m_l += delta;
12556 txn->req.sl.rq.u += delta;
12557 txn->req.sl.rq.v += delta;
12558 break;
12559
12560 case 1: // path
12561 cur_ptr = http_get_path(txn);
12562 if (!cur_ptr)
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12563 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12564
12565 cur_end = cur_ptr;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12566 while (cur_end < s->req.buf->p + txn->req.sl.rq.u + txn->req.sl.rq.u_l && *cur_end != '?')
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12567 cur_end++;
12568
12569 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12570 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12571 txn->req.sl.rq.u_l += delta;
12572 txn->req.sl.rq.v += delta;
12573 break;
12574
12575 case 2: // query
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12576 offset = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12577 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12578 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12579 while (cur_ptr < cur_end && *cur_ptr != '?')
12580 cur_ptr++;
12581
12582 /* skip the question mark or indicate that we must insert it
12583 * (but only if the format string is not empty then).
12584 */
12585 if (cur_ptr < cur_end)
12586 cur_ptr++;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12587 else if (len > 1)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12588 offset = 0;
12589
12590 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12591 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12592 txn->req.sl.rq.u_l += delta;
12593 txn->req.sl.rq.v += delta;
12594 break;
12595
12596 case 3: // uri
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12597 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12598 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12599
12600 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12601 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12602 txn->req.sl.rq.u_l += delta;
12603 txn->req.sl.rq.v += delta;
12604 break;
12605
12606 default:
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12607 return -1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12608 }
12609
12610 /* commit changes and adjust end of message */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12611 delta = buffer_replace2(s->req.buf, cur_ptr, cur_end, replace + offset, len - offset);
Thierry FOURNIER7f6192c2015-04-26 18:01:40 +0200[diff] [blame]12612 txn->req.sl.rq.l += delta;
12613 txn->hdr_idx.v[0].len += delta;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12614 http_msg_move_end(&txn->req, delta);
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12615 return 0;
12616}
12617
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12618/* This function replace the HTTP status code and the associated message. The
12619 * variable <status> contains the new status code. This function never fails.
12620 */
Robin H. Johnson52f5db22017-01-01 13:10:52 -0800[diff] [blame]12621void http_set_status(unsigned int status, const char *reason, struct stream *s)
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12622{
12623 struct http_txn *txn = s->txn;
12624 char *cur_ptr, *cur_end;
12625 int delta;
12626 char *res;
12627 int c_l;
Robin H. Johnson52f5db22017-01-01 13:10:52 -0800[diff] [blame]12628 const char *msg = reason;
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12629 int msg_len;
12630
12631 chunk_reset(&trash);
12632
12633 res = ultoa_o(status, trash.str, trash.size);
12634 c_l = res - trash.str;
12635
12636 trash.str[c_l] = ' ';
12637 trash.len = c_l + 1;
12638
Robin H. Johnson52f5db22017-01-01 13:10:52 -0800[diff] [blame]12639 /* Do we have a custom reason format string? */
12640 if (msg == NULL)
12641 msg = get_reason(status);
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12642 msg_len = strlen(msg);
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12643 strncpy(&trash.str[trash.len], msg, trash.size - trash.len);
12644 trash.len += msg_len;
12645
12646 cur_ptr = s->res.buf->p + txn->rsp.sl.st.c;
12647 cur_end = s->res.buf->p + txn->rsp.sl.st.r + txn->rsp.sl.st.r_l;
12648
12649 /* commit changes and adjust message */
12650 delta = buffer_replace2(s->res.buf, cur_ptr, cur_end, trash.str, trash.len);
12651
12652 /* adjust res line offsets and lengths */
12653 txn->rsp.sl.st.r += c_l - txn->rsp.sl.st.c_l;
12654 txn->rsp.sl.st.c_l = c_l;
12655 txn->rsp.sl.st.r_l = msg_len;
12656
12657 delta = trash.len - (cur_end - cur_ptr);
12658 txn->rsp.sl.st.l += delta;
12659 txn->hdr_idx.v[0].len += delta;
12660 http_msg_move_end(&txn->rsp, delta);
12661}
12662
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12663/* This function executes one of the set-{method,path,query,uri} actions. It
12664 * builds a string in the trash from the specified format string. It finds
Thierry FOURNIER3f4bc652015-08-26 16:23:34 +0200[diff] [blame]12665 * the action to be performed in <http.action>, previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12666 * parse_set_req_line(). The replacement action is excuted by the function
Thierry FOURNIER3f4bc652015-08-26 16:23:34 +0200[diff] [blame]12667 * http_action_set_req_line(). It always returns ACT_RET_CONT. If an error
12668 * occurs the action is canceled, but the rule processing continue.
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12669 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12670enum act_return http_action_set_req_line(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12671 struct session *sess, struct stream *s, int flags)
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12672{
12673 chunk_reset(&trash);
12674
12675 /* If we have to create a query string, prepare a '?'. */
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12676 if (rule->arg.http.action == 2)
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12677 trash.str[trash.len++] = '?';
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12678 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.http.logfmt);
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12679
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12680 http_replace_req_line(rule->arg.http.action, trash.str, trash.len, px, s);
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12681 return ACT_RET_CONT;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12682}
12683
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12684/* This function is just a compliant action wrapper for "set-status". */
12685enum act_return action_http_set_status(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12686 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12687{
Robin H. Johnson52f5db22017-01-01 13:10:52 -0800[diff] [blame]12688 http_set_status(rule->arg.status.code, rule->arg.status.reason, s);
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12689 return ACT_RET_CONT;
12690}
12691
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12692/* parse an http-request action among :
12693 * set-method
12694 * set-path
12695 * set-query
12696 * set-uri
12697 *
12698 * All of them accept a single argument of type string representing a log-format.
12699 * The resulting rule makes use of arg->act.p[0..1] to store the log-format list
12700 * head, and p[2] to store the action as an int (0=method, 1=path, 2=query, 3=uri).
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12701 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12702 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12703enum act_parse_ret parse_set_req_line(const char **args, int *orig_arg, struct proxy *px,
12704 struct act_rule *rule, char **err)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12705{
12706 int cur_arg = *orig_arg;
12707
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12708 rule->action = ACT_CUSTOM;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12709
12710 switch (args[0][4]) {
12711 case 'm' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12712 rule->arg.http.action = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12713 rule->action_ptr = http_action_set_req_line;
12714 break;
12715 case 'p' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12716 rule->arg.http.action = 1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12717 rule->action_ptr = http_action_set_req_line;
12718 break;
12719 case 'q' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12720 rule->arg.http.action = 2;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12721 rule->action_ptr = http_action_set_req_line;
12722 break;
12723 case 'u' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12724 rule->arg.http.action = 3;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12725 rule->action_ptr = http_action_set_req_line;
12726 break;
12727 default:
12728 memprintf(err, "internal error: unhandled action '%s'", args[0]);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12729 return ACT_RET_PRS_ERR;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12730 }
12731
12732 if (!*args[cur_arg] ||
12733 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
12734 memprintf(err, "expects exactly 1 argument <format>");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12735 return ACT_RET_PRS_ERR;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12736 }
12737
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12738 LIST_INIT(&rule->arg.http.logfmt);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12739 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]12740 if (!parse_logformat_string(args[cur_arg], proxy, &rule->arg.http.logfmt, LOG_OPT_HTTP,
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]12741 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, err)) {
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]12742 return ACT_RET_PRS_ERR;
12743 }
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12744
12745 (*orig_arg)++;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12746 return ACT_RET_PRS_OK;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12747}
12748
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12749/* parse set-status action:
12750 * This action accepts a single argument of type int representing
12751 * an http status code. It returns ACT_RET_PRS_OK on success,
12752 * ACT_RET_PRS_ERR on error.
12753 */
12754enum act_parse_ret parse_http_set_status(const char **args, int *orig_arg, struct proxy *px,
12755 struct act_rule *rule, char **err)
12756{
12757 char *error;
12758
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12759 rule->action = ACT_CUSTOM;
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12760 rule->action_ptr = action_http_set_status;
12761
12762 /* Check if an argument is available */
12763 if (!*args[*orig_arg]) {
Robin H. Johnson52f5db22017-01-01 13:10:52 -0800[diff] [blame]12764 memprintf(err, "expects 1 argument: <status>; or 3 arguments: <status> reason <fmt>");
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12765 return ACT_RET_PRS_ERR;
12766 }
12767
12768 /* convert status code as integer */
12769 rule->arg.status.code = strtol(args[*orig_arg], &error, 10);
12770 if (*error != '\0' || rule->arg.status.code < 100 || rule->arg.status.code > 999) {
12771 memprintf(err, "expects an integer status code between 100 and 999");
12772 return ACT_RET_PRS_ERR;
12773 }
12774
12775 (*orig_arg)++;
Robin H. Johnson52f5db22017-01-01 13:10:52 -0800[diff] [blame]12776
12777 /* set custom reason string */
12778 rule->arg.status.reason = NULL; // If null, we use the default reason for the status code.
12779 if (*args[*orig_arg] && strcmp(args[*orig_arg], "reason") == 0 &&
12780 (*args[*orig_arg + 1] && strcmp(args[*orig_arg + 1], "if") != 0 && strcmp(args[*orig_arg + 1], "unless") != 0)) {
12781 (*orig_arg)++;
12782 rule->arg.status.reason = strdup(args[*orig_arg]);
12783 (*orig_arg)++;
12784 }
12785
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12786 return ACT_RET_PRS_OK;
12787}
12788
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12789/* This function executes the "capture" action. It executes a fetch expression,
12790 * turns the result into a string and puts it in a capture slot. It always
12791 * returns 1. If an error occurs the action is cancelled, but the rule
12792 * processing continues.
12793 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12794enum act_return http_action_req_capture(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12795 struct session *sess, struct stream *s, int flags)
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12796{
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12797 struct sample *key;
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12798 struct cap_hdr *h = rule->arg.cap.hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12799 char **cap = s->req_cap;
12800 int len;
12801
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12802 key = sample_fetch_as_type(s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL, rule->arg.cap.expr, SMP_T_STR);
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12803 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12804 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12805
12806 if (cap[h->index] == NULL)
12807 cap[h->index] = pool_alloc2(h->pool);
12808
12809 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12810 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12811
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12812 len = key->data.u.str.len;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12813 if (len > h->len)
12814 len = h->len;
12815
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12816 memcpy(cap[h->index], key->data.u.str.str, len);
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12817 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12818 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12819}
12820
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12821/* This function executes the "capture" action and store the result in a
12822 * capture slot if exists. It executes a fetch expression, turns the result
12823 * into a string and puts it in a capture slot. It always returns 1. If an
12824 * error occurs the action is cancelled, but the rule processing continues.
12825 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12826enum act_return http_action_req_capture_by_id(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12827 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12828{
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12829 struct sample *key;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12830 struct cap_hdr *h;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12831 char **cap = s->req_cap;
12832 struct proxy *fe = strm_fe(s);
12833 int len;
12834 int i;
12835
12836 /* Look for the original configuration. */
12837 for (h = fe->req_cap, i = fe->nb_req_cap - 1;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12838 h != NULL && i != rule->arg.capid.idx ;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12839 i--, h = h->next);
12840 if (!h)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12841 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12842
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12843 key = sample_fetch_as_type(s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL, rule->arg.capid.expr, SMP_T_STR);
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12844 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12845 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12846
12847 if (cap[h->index] == NULL)
12848 cap[h->index] = pool_alloc2(h->pool);
12849
12850 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12851 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12852
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12853 len = key->data.u.str.len;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12854 if (len > h->len)
12855 len = h->len;
12856
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12857 memcpy(cap[h->index], key->data.u.str.str, len);
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12858 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12859 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12860}
12861
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12862/* parse an "http-request capture" action. It takes a single argument which is
12863 * a sample fetch expression. It stores the expression into arg->act.p[0] and
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12864 * the allocated hdr_cap struct or the preallocated "id" into arg->act.p[1].
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12865 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12866 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12867enum act_parse_ret parse_http_req_capture(const char **args, int *orig_arg, struct proxy *px,
12868 struct act_rule *rule, char **err)
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12869{
12870 struct sample_expr *expr;
12871 struct cap_hdr *hdr;
12872 int cur_arg;
Willy Tarreau3986ac12015-05-08 16:13:42 +0200[diff] [blame]12873 int len = 0;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12874
12875 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12876 if (strcmp(args[cur_arg], "if") == 0 ||
12877 strcmp(args[cur_arg], "unless") == 0)
12878 break;
12879
12880 if (cur_arg < *orig_arg + 3) {
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12881 memprintf(err, "expects <expression> [ 'len' <length> | id <idx> ]");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12882 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12883 }
12884
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12885 cur_arg = *orig_arg;
12886 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12887 if (!expr)
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12888 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12889
12890 if (!(expr->fetch->val & SMP_VAL_FE_HRQ_HDR)) {
12891 memprintf(err,
12892 "fetch method '%s' extracts information from '%s', none of which is available here",
12893 args[cur_arg-1], sample_src_names(expr->fetch->use));
12894 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12895 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12896 }
12897
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12898 if (!args[cur_arg] || !*args[cur_arg]) {
12899 memprintf(err, "expects 'len or 'id'");
12900 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12901 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12902 }
12903
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12904 if (strcmp(args[cur_arg], "len") == 0) {
12905 cur_arg++;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12906
12907 if (!(px->cap & PR_CAP_FE)) {
12908 memprintf(err, "proxy '%s' has no frontend capability", px->id);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12909 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12910 }
12911
12912 proxy->conf.args.ctx = ARGC_CAP;
12913
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12914 if (!args[cur_arg]) {
12915 memprintf(err, "missing length value");
12916 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12917 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12918 }
12919 /* we copy the table name for now, it will be resolved later */
12920 len = atoi(args[cur_arg]);
12921 if (len <= 0) {
12922 memprintf(err, "length must be > 0");
12923 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12924 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12925 }
12926 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12927
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12928 if (!len) {
12929 memprintf(err, "a positive 'len' argument is mandatory");
12930 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12931 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12932 }
12933
Vincent Bernat02779b62016-04-03 13:48:43 +0200[diff] [blame]12934 hdr = calloc(1, sizeof(*hdr));
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12935 hdr->next = px->req_cap;
12936 hdr->name = NULL; /* not a header capture */
12937 hdr->namelen = 0;
12938 hdr->len = len;
12939 hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
12940 hdr->index = px->nb_req_cap++;
12941
12942 px->req_cap = hdr;
12943 px->to_log |= LW_REQHDR;
12944
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12945 rule->action = ACT_CUSTOM;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12946 rule->action_ptr = http_action_req_capture;
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12947 rule->arg.cap.expr = expr;
12948 rule->arg.cap.hdr = hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12949 }
12950
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12951 else if (strcmp(args[cur_arg], "id") == 0) {
12952 int id;
12953 char *error;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12954
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12955 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12956
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12957 if (!args[cur_arg]) {
12958 memprintf(err, "missing id value");
12959 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12960 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12961 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12962
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12963 id = strtol(args[cur_arg], &error, 10);
12964 if (*error != '\0') {
12965 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12966 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12967 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12968 }
12969 cur_arg++;
12970
12971 proxy->conf.args.ctx = ARGC_CAP;
12972
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12973 rule->action = ACT_CUSTOM;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12974 rule->action_ptr = http_action_req_capture_by_id;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12975 rule->arg.capid.expr = expr;
12976 rule->arg.capid.idx = id;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12977 }
12978
12979 else {
12980 memprintf(err, "expects 'len' or 'id', found '%s'", args[cur_arg]);
12981 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12982 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12983 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12984
12985 *orig_arg = cur_arg;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12986 return ACT_RET_PRS_OK;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12987}
12988
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12989/* This function executes the "capture" action and store the result in a
12990 * capture slot if exists. It executes a fetch expression, turns the result
12991 * into a string and puts it in a capture slot. It always returns 1. If an
12992 * error occurs the action is cancelled, but the rule processing continues.
12993 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12994enum act_return http_action_res_capture_by_id(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12995 struct session *sess, struct stream *s, int flags)
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12996{
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12997 struct sample *key;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12998 struct cap_hdr *h;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12999 char **cap = s->res_cap;
13000 struct proxy *fe = strm_fe(s);
13001 int len;
13002 int i;
13003
13004 /* Look for the original configuration. */
13005 for (h = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]13006 h != NULL && i != rule->arg.capid.idx ;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13007 i--, h = h->next);
13008 if (!h)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]13009 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13010
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]13011 key = sample_fetch_as_type(s->be, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL, rule->arg.capid.expr, SMP_T_STR);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13012 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]13013 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13014
13015 if (cap[h->index] == NULL)
13016 cap[h->index] = pool_alloc2(h->pool);
13017
13018 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]13019 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13020
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]13021 len = key->data.u.str.len;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13022 if (len > h->len)
13023 len = h->len;
13024
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]13025 memcpy(cap[h->index], key->data.u.str.str, len);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13026 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]13027 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13028}
13029
13030/* parse an "http-response capture" action. It takes a single argument which is
13031 * a sample fetch expression. It stores the expression into arg->act.p[0] and
13032 * the allocated hdr_cap struct od the preallocated id into arg->act.p[1].
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]13033 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13034 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]13035enum act_parse_ret parse_http_res_capture(const char **args, int *orig_arg, struct proxy *px,
13036 struct act_rule *rule, char **err)
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13037{
13038 struct sample_expr *expr;
13039 int cur_arg;
13040 int id;
13041 char *error;
13042
13043 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
13044 if (strcmp(args[cur_arg], "if") == 0 ||
13045 strcmp(args[cur_arg], "unless") == 0)
13046 break;
13047
13048 if (cur_arg < *orig_arg + 3) {
Willy Tarreau29bdb1c2016-06-24 15:36:34 +0200[diff] [blame]13049 memprintf(err, "expects <expression> id <idx>");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]13050 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13051 }
13052
13053 cur_arg = *orig_arg;
13054 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
13055 if (!expr)
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]13056 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13057
13058 if (!(expr->fetch->val & SMP_VAL_FE_HRS_HDR)) {
13059 memprintf(err,
13060 "fetch method '%s' extracts information from '%s', none of which is available here",
13061 args[cur_arg-1], sample_src_names(expr->fetch->use));
13062 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]13063 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13064 }
13065
13066 if (!args[cur_arg] || !*args[cur_arg]) {
Willy Tarreau29bdb1c2016-06-24 15:36:34 +0200[diff] [blame]13067 memprintf(err, "expects 'id'");
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13068 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]13069 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13070 }
13071
13072 if (strcmp(args[cur_arg], "id") != 0) {
13073 memprintf(err, "expects 'id', found '%s'", args[cur_arg]);
13074 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]13075 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13076 }
13077
13078 cur_arg++;
13079
13080 if (!args[cur_arg]) {
13081 memprintf(err, "missing id value");
13082 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]13083 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13084 }
13085
13086 id = strtol(args[cur_arg], &error, 10);
13087 if (*error != '\0') {
13088 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
13089 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]13090 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13091 }
13092 cur_arg++;
13093
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13094 proxy->conf.args.ctx = ARGC_CAP;
13095
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]13096 rule->action = ACT_CUSTOM;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13097 rule->action_ptr = http_action_res_capture_by_id;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]13098 rule->arg.capid.expr = expr;
13099 rule->arg.capid.idx = id;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13100
13101 *orig_arg = cur_arg;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]13102 return ACT_RET_PRS_OK;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13103}
13104
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]13105/*
13106 * Return the struct http_req_action_kw associated to a keyword.
13107 */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]13108struct action_kw *action_http_req_custom(const char *kw)
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]13109{
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]13110 return action_lookup(&http_req_keywords.list, kw);
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]13111}
13112
13113/*
13114 * Return the struct http_res_action_kw associated to a keyword.
13115 */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]13116struct action_kw *action_http_res_custom(const char *kw)
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]13117{
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]13118 return action_lookup(&http_res_keywords.list, kw);
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]13119}
13120
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13121
13122/* "show errors" handler for the CLI. Returns 0 if wants to continue, 1 to stop
13123 * now.
13124 */
13125static int cli_parse_show_errors(char **args, struct appctx *appctx, void *private)
13126{
13127 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
13128 return 1;
13129
Willy Tarreau234ba2d2016-11-25 08:39:10 +0100[diff] [blame]13130 if (*args[2]) {
13131 struct proxy *px;
13132
13133 px = proxy_find_by_name(args[2], 0, 0);
13134 if (px)
13135 appctx->ctx.errors.iid = px->uuid;
13136 else
13137 appctx->ctx.errors.iid = atoi(args[2]);
13138
13139 if (!appctx->ctx.errors.iid) {
13140 appctx->ctx.cli.msg = "No such proxy.\n";
13141 appctx->st0 = CLI_ST_PRINT;
13142 return 1;
13143 }
13144 }
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13145 else
Willy Tarreau234ba2d2016-11-25 08:39:10 +0100[diff] [blame]13146 appctx->ctx.errors.iid = -1; // dump all proxies
13147
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]13148 appctx->ctx.errors.flag = 0;
13149 if (strcmp(args[3], "request") == 0)
13150 appctx->ctx.errors.flag |= 4; // ignore response
13151 else if (strcmp(args[3], "response") == 0)
13152 appctx->ctx.errors.flag |= 2; // ignore request
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13153 appctx->ctx.errors.px = NULL;
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13154 return 0;
13155}
13156
13157/* This function dumps all captured errors onto the stream interface's
13158 * read buffer. It returns 0 if the output buffer is full and it needs
13159 * to be called again, otherwise non-zero.
13160 */
13161static int cli_io_handler_show_errors(struct appctx *appctx)
13162{
13163 struct stream_interface *si = appctx->owner;
13164 extern const char *monthname[12];
13165
13166 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW)))
13167 return 1;
13168
13169 chunk_reset(&trash);
13170
13171 if (!appctx->ctx.errors.px) {
13172 /* the function had not been called yet, let's prepare the
13173 * buffer for a response.
13174 */
13175 struct tm tm;
13176
13177 get_localtime(date.tv_sec, &tm);
13178 chunk_appendf(&trash, "Total events captured on [%02d/%s/%04d:%02d:%02d:%02d.%03d] : %u\n",
13179 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
13180 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(date.tv_usec/1000),
13181 error_snapshot_id);
13182
13183 if (bi_putchk(si_ic(si), &trash) == -1) {
13184 /* Socket buffer full. Let's try again later from the same point */
13185 si_applet_cant_put(si);
13186 return 0;
13187 }
13188
13189 appctx->ctx.errors.px = proxy;
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13190 appctx->ctx.errors.bol = 0;
13191 appctx->ctx.errors.ptr = -1;
13192 }
13193
13194 /* we have two inner loops here, one for the proxy, the other one for
13195 * the buffer.
13196 */
13197 while (appctx->ctx.errors.px) {
13198 struct error_snapshot *es;
13199
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]13200 if ((appctx->ctx.errors.flag & 1) == 0) {
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13201 es = &appctx->ctx.errors.px->invalid_req;
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]13202 if (appctx->ctx.errors.flag & 2) // skip req
13203 goto next;
13204 }
13205 else {
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13206 es = &appctx->ctx.errors.px->invalid_rep;
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]13207 if (appctx->ctx.errors.flag & 4) // skip resp
13208 goto next;
13209 }
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13210
13211 if (!es->when.tv_sec)
13212 goto next;
13213
13214 if (appctx->ctx.errors.iid >= 0 &&
13215 appctx->ctx.errors.px->uuid != appctx->ctx.errors.iid &&
13216 es->oe->uuid != appctx->ctx.errors.iid)
13217 goto next;
13218
13219 if (appctx->ctx.errors.ptr < 0) {
13220 /* just print headers now */
13221
13222 char pn[INET6_ADDRSTRLEN];
13223 struct tm tm;
13224 int port;
13225
13226 get_localtime(es->when.tv_sec, &tm);
13227 chunk_appendf(&trash, " \n[%02d/%s/%04d:%02d:%02d:%02d.%03d]",
13228 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
13229 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(es->when.tv_usec/1000));
13230
13231 switch (addr_to_str(&es->src, pn, sizeof(pn))) {
13232 case AF_INET:
13233 case AF_INET6:
13234 port = get_host_port(&es->src);
13235 break;
13236 default:
13237 port = 0;
13238 }
13239
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]13240 switch (appctx->ctx.errors.flag & 1) {
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13241 case 0:
13242 chunk_appendf(&trash,
13243 " frontend %s (#%d): invalid request\n"
13244 " backend %s (#%d)",
13245 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
13246 (es->oe->cap & PR_CAP_BE) ? es->oe->id : "<NONE>",
13247 (es->oe->cap & PR_CAP_BE) ? es->oe->uuid : -1);
13248 break;
13249 case 1:
13250 chunk_appendf(&trash,
13251 " backend %s (#%d): invalid response\n"
13252 " frontend %s (#%d)",
13253 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
13254 es->oe->id, es->oe->uuid);
13255 break;
13256 }
13257
13258 chunk_appendf(&trash,
13259 ", server %s (#%d), event #%u\n"
13260 " src %s:%d, session #%d, session flags 0x%08x\n"
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]13261 " HTTP msg state %s(%d), msg flags 0x%08x, tx flags 0x%08x\n"
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13262 " HTTP chunk len %lld bytes, HTTP body len %lld bytes\n"
13263 " buffer flags 0x%08x, out %d bytes, total %lld bytes\n"
13264 " pending %d bytes, wrapping at %d, error at position %d:\n \n",
13265 es->srv ? es->srv->id : "<NONE>", es->srv ? es->srv->puid : -1,
13266 es->ev_id,
13267 pn, port, es->sid, es->s_flags,
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]13268 http_msg_state_str(es->state), es->state, es->m_flags, es->t_flags,
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13269 es->m_clen, es->m_blen,
13270 es->b_flags, es->b_out, es->b_tot,
13271 es->len, es->b_wrap, es->pos);
13272
13273 if (bi_putchk(si_ic(si), &trash) == -1) {
13274 /* Socket buffer full. Let's try again later from the same point */
13275 si_applet_cant_put(si);
13276 return 0;
13277 }
13278 appctx->ctx.errors.ptr = 0;
13279 appctx->ctx.errors.sid = es->sid;
13280 }
13281
13282 if (appctx->ctx.errors.sid != es->sid) {
13283 /* the snapshot changed while we were dumping it */
13284 chunk_appendf(&trash,
13285 " WARNING! update detected on this snapshot, dump interrupted. Please re-check!\n");
13286 if (bi_putchk(si_ic(si), &trash) == -1) {
13287 si_applet_cant_put(si);
13288 return 0;
13289 }
13290 goto next;
13291 }
13292
13293 /* OK, ptr >= 0, so we have to dump the current line */
13294 while (es->buf && appctx->ctx.errors.ptr < es->len && appctx->ctx.errors.ptr < global.tune.bufsize) {
13295 int newptr;
13296 int newline;
13297
13298 newline = appctx->ctx.errors.bol;
13299 newptr = dump_text_line(&trash, es->buf, global.tune.bufsize, es->len, &newline, appctx->ctx.errors.ptr);
13300 if (newptr == appctx->ctx.errors.ptr)
13301 return 0;
13302
13303 if (bi_putchk(si_ic(si), &trash) == -1) {
13304 /* Socket buffer full. Let's try again later from the same point */
13305 si_applet_cant_put(si);
13306 return 0;
13307 }
13308 appctx->ctx.errors.ptr = newptr;
13309 appctx->ctx.errors.bol = newline;
13310 };
13311 next:
13312 appctx->ctx.errors.bol = 0;
13313 appctx->ctx.errors.ptr = -1;
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]13314 appctx->ctx.errors.flag ^= 1;
13315 if (!(appctx->ctx.errors.flag & 1))
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13316 appctx->ctx.errors.px = appctx->ctx.errors.px->next;
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13317 }
13318
13319 /* dump complete */
13320 return 1;
13321}
13322
13323/* register cli keywords */
13324static struct cli_kw_list cli_kws = {{ },{
13325 { { "show", "errors", NULL },
13326 "show errors : report last request and response errors for each proxy",
13327 cli_parse_show_errors, cli_io_handler_show_errors, NULL,
13328 },
13329 {{},}
13330}};
13331
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]13332/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13333/* All supported ACL keywords must be declared here. */
13334/************************************************************************/
13335
13336/* Note: must not be declared <const> as its list will be overwritten.
13337 * Please take care of keeping this list alphabetically sorted.
13338 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]13339static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13340 { "base", "base", PAT_MATCH_STR },
13341 { "base_beg", "base", PAT_MATCH_BEG },
13342 { "base_dir", "base", PAT_MATCH_DIR },
13343 { "base_dom", "base", PAT_MATCH_DOM },
13344 { "base_end", "base", PAT_MATCH_END },
13345 { "base_len", "base", PAT_MATCH_LEN },
13346 { "base_reg", "base", PAT_MATCH_REG },
13347 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]13348
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13349 { "cook", "req.cook", PAT_MATCH_STR },
13350 { "cook_beg", "req.cook", PAT_MATCH_BEG },
13351 { "cook_dir", "req.cook", PAT_MATCH_DIR },
13352 { "cook_dom", "req.cook", PAT_MATCH_DOM },
13353 { "cook_end", "req.cook", PAT_MATCH_END },
13354 { "cook_len", "req.cook", PAT_MATCH_LEN },
13355 { "cook_reg", "req.cook", PAT_MATCH_REG },
13356 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13357
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13358 { "hdr", "req.hdr", PAT_MATCH_STR },
13359 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
13360 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
13361 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
13362 { "hdr_end", "req.hdr", PAT_MATCH_END },
13363 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
13364 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
13365 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13366
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13367 /* these two declarations uses strings with list storage (in place
13368 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
13369 * and delete functions are relative to the list management. The parse
13370 * and match method are related to the corresponding fetch methods. This
13371 * is very particular ACL declaration mode.
13372 */
13373 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
13374 { "method", NULL, PAT_MATCH_STR, pat_parse_meth, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_meth },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13375
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13376 { "path", "path", PAT_MATCH_STR },
13377 { "path_beg", "path", PAT_MATCH_BEG },
13378 { "path_dir", "path", PAT_MATCH_DIR },
13379 { "path_dom", "path", PAT_MATCH_DOM },
13380 { "path_end", "path", PAT_MATCH_END },
13381 { "path_len", "path", PAT_MATCH_LEN },
13382 { "path_reg", "path", PAT_MATCH_REG },
13383 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13384
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13385 { "req_ver", "req.ver", PAT_MATCH_STR },
13386 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13387
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13388 { "scook", "res.cook", PAT_MATCH_STR },
13389 { "scook_beg", "res.cook", PAT_MATCH_BEG },
13390 { "scook_dir", "res.cook", PAT_MATCH_DIR },
13391 { "scook_dom", "res.cook", PAT_MATCH_DOM },
13392 { "scook_end", "res.cook", PAT_MATCH_END },
13393 { "scook_len", "res.cook", PAT_MATCH_LEN },
13394 { "scook_reg", "res.cook", PAT_MATCH_REG },
13395 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13396
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13397 { "shdr", "res.hdr", PAT_MATCH_STR },
13398 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
13399 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
13400 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
13401 { "shdr_end", "res.hdr", PAT_MATCH_END },
13402 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
13403 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
13404 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13405
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13406 { "url", "url", PAT_MATCH_STR },
13407 { "url_beg", "url", PAT_MATCH_BEG },
13408 { "url_dir", "url", PAT_MATCH_DIR },
13409 { "url_dom", "url", PAT_MATCH_DOM },
13410 { "url_end", "url", PAT_MATCH_END },
13411 { "url_len", "url", PAT_MATCH_LEN },
13412 { "url_reg", "url", PAT_MATCH_REG },
13413 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13414
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13415 { "urlp", "urlp", PAT_MATCH_STR },
13416 { "urlp_beg", "urlp", PAT_MATCH_BEG },
13417 { "urlp_dir", "urlp", PAT_MATCH_DIR },
13418 { "urlp_dom", "urlp", PAT_MATCH_DOM },
13419 { "urlp_end", "urlp", PAT_MATCH_END },
13420 { "urlp_len", "urlp", PAT_MATCH_LEN },
13421 { "urlp_reg", "urlp", PAT_MATCH_REG },
13422 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13423
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]13424 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13425}};
13426
13427/************************************************************************/
13428/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]13429/************************************************************************/
13430/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]13431static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13432 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13433 { "base32", smp_fetch_base32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13434 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
13435
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]13436 /* capture are allocated and are permanent in the stream */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]13437 { "capture.req.hdr", smp_fetch_capture_header_req, ARG1(1,SINT), NULL, SMP_T_STR, SMP_USE_HRQHP },
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]13438
13439 /* retrieve these captures from the HTTP logs */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]13440 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
13441 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
13442 { "capture.req.ver", smp_fetch_capture_req_ver, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]13443
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]13444 { "capture.res.hdr", smp_fetch_capture_header_res, ARG1(1,SINT), NULL, SMP_T_STR, SMP_USE_HRSHP },
13445 { "capture.res.ver", smp_fetch_capture_res_ver, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]13446
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13447 /* cookie is valid in both directions (eg: for "stick ...") but cook*
13448 * are only here to match the ACL's name, are request-only and are used
13449 * for ACL compatibility only.
13450 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13451 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
13452 { "cookie", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV|SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13453 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
13454 { "cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13455
13456 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
13457 * only here to match the ACL's name, are request-only and are used for
13458 * ACL compatibility only.
13459 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13460 { "hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRQHV|SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13461 { "hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13462 { "hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13463 { "hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13464
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]13465 { "http_auth", smp_fetch_http_auth, ARG1(1,USR), NULL, SMP_T_BOOL, SMP_USE_HRQHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13466 { "http_auth_group", smp_fetch_http_auth_grp, ARG1(1,USR), NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13467 { "http_first_req", smp_fetch_http_first_req, 0, NULL, SMP_T_BOOL, SMP_USE_HRQHP },
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]13468 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13469 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]13470 { "query", smp_fetch_query, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13471
13472 /* HTTP protocol on the request path */
13473 { "req.proto_http", smp_fetch_proto_http, 0, NULL, SMP_T_BOOL, SMP_USE_HRQHP },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13474 { "req_proto_http", smp_fetch_proto_http, 0, NULL, SMP_T_BOOL, SMP_USE_HRQHP },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13475
13476 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13477 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
13478 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13479
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]13480 { "req.body", smp_fetch_body, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13481 { "req.body_len", smp_fetch_body_len, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
13482 { "req.body_size", smp_fetch_body_size, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]13483 { "req.body_param", smp_fetch_body_param, ARG1(0,STR), NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]13484
Thierry FOURNIERd7d88812017-04-19 15:15:14 +0200[diff] [blame]13485 { "req.hdrs", smp_fetch_hdrs, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Thierry FOURNIER5617dce2017-04-09 05:38:19 +0200[diff] [blame]13486 { "req.hdrs_bin", smp_fetch_hdrs_bin, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
13487
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13488 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13489 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
13490 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13491
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13492 /* explicit req.{cook,hdr} are used to force the fetch direction to be request-only */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13493 { "req.cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13494 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
13495 { "req.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13496
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13497 { "req.fhdr", smp_fetch_fhdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13498 { "req.fhdr_cnt", smp_fetch_fhdr_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13499 { "req.hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13500 { "req.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13501 { "req.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]13502 { "req.hdr_names", smp_fetch_hdr_names, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13503 { "req.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13504
13505 /* explicit req.{cook,hdr} are used to force the fetch direction to be response-only */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13506 { "res.cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13507 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
13508 { "res.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13509
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13510 { "res.fhdr", smp_fetch_fhdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13511 { "res.fhdr_cnt", smp_fetch_fhdr_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13512 { "res.hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13513 { "res.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13514 { "res.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]13515 { "res.hdr_names", smp_fetch_hdr_names, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13516 { "res.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_SINT, SMP_USE_HRSHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13517
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13518 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13519 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13520 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
13521 { "scook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13522 { "set-cookie", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV }, /* deprecated */
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13523
13524 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13525 { "shdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13526 { "shdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13527 { "shdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13528 { "shdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_SINT, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13529
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13530 { "status", smp_fetch_stcode, 0, NULL, SMP_T_SINT, SMP_USE_HRSHP },
Thierry Fournier0e00dca2016-04-07 15:47:40 +0200[diff] [blame]13531 { "unique-id", smp_fetch_uniqueid, 0, NULL, SMP_T_STR, SMP_SRC_L4SRV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13532 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13533 { "url32", smp_fetch_url32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]13534 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13535 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13536 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]13537 { "url_param", smp_fetch_url_param, ARG2(0,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
13538 { "urlp" , smp_fetch_url_param, ARG2(0,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13539 { "urlp_val", smp_fetch_url_param_val, ARG2(0,STR,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13540 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]13541}};
13542
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13543
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13544/************************************************************************/
13545/* All supported converter keywords must be declared here. */
13546/************************************************************************/
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13547/* Note: must not be declared <const> as its list will be overwritten */
13548static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13549 { "http_date", sample_conv_http_date, ARG1(0,SINT), NULL, SMP_T_SINT, SMP_T_STR},
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]13550 { "language", sample_conv_q_prefered, ARG2(1,STR,STR), NULL, SMP_T_STR, SMP_T_STR},
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]13551 { "capture-req", smp_conv_req_capture, ARG1(1,SINT), NULL, SMP_T_STR, SMP_T_STR},
13552 { "capture-res", smp_conv_res_capture, ARG1(1,SINT), NULL, SMP_T_STR, SMP_T_STR},
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]13553 { "url_dec", sample_conv_url_dec, 0, NULL, SMP_T_STR, SMP_T_STR},
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13554 { NULL, NULL, 0, 0, 0 },
13555}};
13556
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]13557
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13558/************************************************************************/
13559/* All supported http-request action keywords must be declared here. */
13560/************************************************************************/
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]13561struct action_kw_list http_req_actions = {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13562 .kw = {
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]13563 { "capture", parse_http_req_capture },
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13564 { "set-method", parse_set_req_line },
13565 { "set-path", parse_set_req_line },
13566 { "set-query", parse_set_req_line },
13567 { "set-uri", parse_set_req_line },
Willy Tarreaucb703b02015-04-03 09:52:01 +0200[diff] [blame]13568 { NULL, NULL }
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13569 }
13570};
13571
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]13572struct action_kw_list http_res_actions = {
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13573 .kw = {
13574 { "capture", parse_http_res_capture },
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]13575 { "set-status", parse_http_set_status },
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13576 { NULL, NULL }
13577 }
13578};
13579
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13580__attribute__((constructor))
13581static void __http_protocol_init(void)
13582{
13583 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]13584 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13585 sample_register_convs(&sample_conv_kws);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13586 http_req_keywords_register(&http_req_actions);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13587 http_res_keywords_register(&http_res_actions);
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13588 cli_register_kw(&cli_kws);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13589}
13590
13591
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]13592/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]13593 * Local variables:
13594 * c-indent-level: 8
13595 * c-basic-offset: 8
13596 * End:
13597 */