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git01.mediatek.com / haproxy / e3e326d9f048a001bc848ca0638faf3d806e8b04 / . / src / proto_http.c
blob: 3490aa77d77b6ef33177a0dc844203631e9c6d1b [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
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]369void init_proto_http()
370{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]371 int i;
372 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]373 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]374
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]375 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
376 if (!http_err_msgs[msg]) {
377 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
378 abort();
379 }
380
381 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
382 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
383 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]384
385 /* initialize the log header encoding map : '{|}"#' should be encoded with
386 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
387 * URL encoding only requires '"', '#' to be encoded as well as non-
388 * printable characters above.
389 */
390 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
391 memset(url_encode_map, 0, sizeof(url_encode_map));
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]392 memset(http_encode_map, 0, sizeof(url_encode_map));
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]393 for (i = 0; i < 32; i++) {
394 FD_SET(i, hdr_encode_map);
395 FD_SET(i, url_encode_map);
396 }
397 for (i = 127; i < 256; i++) {
398 FD_SET(i, hdr_encode_map);
399 FD_SET(i, url_encode_map);
400 }
401
402 tmp = "\"#{|}";
403 while (*tmp) {
404 FD_SET(*tmp, hdr_encode_map);
405 tmp++;
406 }
407
408 tmp = "\"#";
409 while (*tmp) {
410 FD_SET(*tmp, url_encode_map);
411 tmp++;
412 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]413
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]414 /* initialize the http header encoding map. The draft httpbis define the
415 * header content as:
416 *
417 * HTTP-message = start-line
418 * *( header-field CRLF )
419 * CRLF
420 * [ message-body ]
421 * header-field = field-name ":" OWS field-value OWS
422 * field-value = *( field-content / obs-fold )
423 * field-content = field-vchar [ 1*( SP / HTAB ) field-vchar ]
424 * obs-fold = CRLF 1*( SP / HTAB )
425 * field-vchar = VCHAR / obs-text
426 * VCHAR = %x21-7E
427 * obs-text = %x80-FF
428 *
429 * All the chars are encoded except "VCHAR", "obs-text", SP and HTAB.
430 * The encoded chars are form 0x00 to 0x08, 0x0a to 0x1f and 0x7f. The
431 * "obs-fold" is volontary forgotten because haproxy remove this.
432 */
433 memset(http_encode_map, 0, sizeof(http_encode_map));
434 for (i = 0x00; i <= 0x08; i++)
435 FD_SET(i, http_encode_map);
436 for (i = 0x0a; i <= 0x1f; i++)
437 FD_SET(i, http_encode_map);
438 FD_SET(0x7f, http_encode_map);
439
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]440 /* memory allocations */
Willy Tarreau63986c72015-04-03 22:55:33 +0200[diff] [blame]441 pool2_http_txn = create_pool("http_txn", sizeof(struct http_txn), MEM_F_SHARED);
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]442 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]443 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]444}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]445
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]446/*
447 * We have 26 list of methods (1 per first letter), each of which can have
448 * up to 3 entries (2 valid, 1 null).
449 */
450struct http_method_desc {
Willy Tarreauc8987b32013-12-06 23:43:17 +0100[diff] [blame]451 enum http_meth_t meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]452 int len;
453 const char text[8];
454};
455
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]456const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]457 ['C' - 'A'] = {
458 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
459 },
460 ['D' - 'A'] = {
461 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
462 },
463 ['G' - 'A'] = {
464 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
465 },
466 ['H' - 'A'] = {
467 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
468 },
Christopher Fauletd57ad642015-07-31 14:26:57 +0200[diff] [blame]469 ['O' - 'A'] = {
470 [0] = { .meth = HTTP_METH_OPTIONS , .len=7, .text="OPTIONS" },
471 },
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]472 ['P' - 'A'] = {
473 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
474 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
475 },
476 ['T' - 'A'] = {
477 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
478 },
479 /* rest is empty like this :
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]480 * [0] = { .meth = HTTP_METH_OTHER , .len=0, .text="" },
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]481 */
482};
483
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]484const struct http_method_name http_known_methods[HTTP_METH_OTHER] = {
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]485 [HTTP_METH_OPTIONS] = { "OPTIONS", 7 },
486 [HTTP_METH_GET] = { "GET", 3 },
487 [HTTP_METH_HEAD] = { "HEAD", 4 },
488 [HTTP_METH_POST] = { "POST", 4 },
489 [HTTP_METH_PUT] = { "PUT", 3 },
490 [HTTP_METH_DELETE] = { "DELETE", 6 },
491 [HTTP_METH_TRACE] = { "TRACE", 5 },
492 [HTTP_METH_CONNECT] = { "CONNECT", 7 },
493};
494
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]495/* 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]496 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]497 * RFC2616/RFC5234/RFC7230 for those chars. A token is any ASCII char that is
498 * neither a separator nor a CTL char. An http ver_token is any ASCII which can
499 * be found in an HTTP version, which includes 'H', 'T', 'P', '/', '.' and any
500 * digit. Note: please do not overwrite values in assignment since gcc-2.95
501 * will not handle them correctly. It's worth noting that chars 128..255 are
502 * nothing, not even control chars.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]503 */
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]504const unsigned char http_char_classes[256] = {
505 [ 0] = HTTP_FLG_CTL,
506 [ 1] = HTTP_FLG_CTL,
507 [ 2] = HTTP_FLG_CTL,
508 [ 3] = HTTP_FLG_CTL,
509 [ 4] = HTTP_FLG_CTL,
510 [ 5] = HTTP_FLG_CTL,
511 [ 6] = HTTP_FLG_CTL,
512 [ 7] = HTTP_FLG_CTL,
513 [ 8] = HTTP_FLG_CTL,
514 [ 9] = HTTP_FLG_SPHT | HTTP_FLG_LWS | HTTP_FLG_SEP | HTTP_FLG_CTL,
515 [ 10] = HTTP_FLG_CRLF | HTTP_FLG_LWS | HTTP_FLG_CTL,
516 [ 11] = HTTP_FLG_CTL,
517 [ 12] = HTTP_FLG_CTL,
518 [ 13] = HTTP_FLG_CRLF | HTTP_FLG_LWS | HTTP_FLG_CTL,
519 [ 14] = HTTP_FLG_CTL,
520 [ 15] = HTTP_FLG_CTL,
521 [ 16] = HTTP_FLG_CTL,
522 [ 17] = HTTP_FLG_CTL,
523 [ 18] = HTTP_FLG_CTL,
524 [ 19] = HTTP_FLG_CTL,
525 [ 20] = HTTP_FLG_CTL,
526 [ 21] = HTTP_FLG_CTL,
527 [ 22] = HTTP_FLG_CTL,
528 [ 23] = HTTP_FLG_CTL,
529 [ 24] = HTTP_FLG_CTL,
530 [ 25] = HTTP_FLG_CTL,
531 [ 26] = HTTP_FLG_CTL,
532 [ 27] = HTTP_FLG_CTL,
533 [ 28] = HTTP_FLG_CTL,
534 [ 29] = HTTP_FLG_CTL,
535 [ 30] = HTTP_FLG_CTL,
536 [ 31] = HTTP_FLG_CTL,
537 [' '] = HTTP_FLG_SPHT | HTTP_FLG_LWS | HTTP_FLG_SEP,
538 ['!'] = HTTP_FLG_TOK,
539 ['"'] = HTTP_FLG_SEP,
540 ['#'] = HTTP_FLG_TOK,
541 ['$'] = HTTP_FLG_TOK,
542 ['%'] = HTTP_FLG_TOK,
543 ['&'] = HTTP_FLG_TOK,
544 [ 39] = HTTP_FLG_TOK,
545 ['('] = HTTP_FLG_SEP,
546 [')'] = HTTP_FLG_SEP,
547 ['*'] = HTTP_FLG_TOK,
548 ['+'] = HTTP_FLG_TOK,
549 [','] = HTTP_FLG_SEP,
550 ['-'] = HTTP_FLG_TOK,
551 ['.'] = HTTP_FLG_TOK | HTTP_FLG_VER,
552 ['/'] = HTTP_FLG_SEP | HTTP_FLG_VER,
553 ['0'] = HTTP_FLG_TOK | HTTP_FLG_VER,
554 ['1'] = HTTP_FLG_TOK | HTTP_FLG_VER,
555 ['2'] = HTTP_FLG_TOK | HTTP_FLG_VER,
556 ['3'] = HTTP_FLG_TOK | HTTP_FLG_VER,
557 ['4'] = HTTP_FLG_TOK | HTTP_FLG_VER,
558 ['5'] = HTTP_FLG_TOK | HTTP_FLG_VER,
559 ['6'] = HTTP_FLG_TOK | HTTP_FLG_VER,
560 ['7'] = HTTP_FLG_TOK | HTTP_FLG_VER,
561 ['8'] = HTTP_FLG_TOK | HTTP_FLG_VER,
562 ['9'] = HTTP_FLG_TOK | HTTP_FLG_VER,
563 [':'] = HTTP_FLG_SEP,
564 [';'] = HTTP_FLG_SEP,
565 ['<'] = HTTP_FLG_SEP,
566 ['='] = HTTP_FLG_SEP,
567 ['>'] = HTTP_FLG_SEP,
568 ['?'] = HTTP_FLG_SEP,
569 ['@'] = HTTP_FLG_SEP,
570 ['A'] = HTTP_FLG_TOK,
571 ['B'] = HTTP_FLG_TOK,
572 ['C'] = HTTP_FLG_TOK,
573 ['D'] = HTTP_FLG_TOK,
574 ['E'] = HTTP_FLG_TOK,
575 ['F'] = HTTP_FLG_TOK,
576 ['G'] = HTTP_FLG_TOK,
577 ['H'] = HTTP_FLG_TOK | HTTP_FLG_VER,
578 ['I'] = HTTP_FLG_TOK,
579 ['J'] = HTTP_FLG_TOK,
580 ['K'] = HTTP_FLG_TOK,
581 ['L'] = HTTP_FLG_TOK,
582 ['M'] = HTTP_FLG_TOK,
583 ['N'] = HTTP_FLG_TOK,
584 ['O'] = HTTP_FLG_TOK,
585 ['P'] = HTTP_FLG_TOK | HTTP_FLG_VER,
586 ['Q'] = HTTP_FLG_TOK,
587 ['R'] = HTTP_FLG_TOK | HTTP_FLG_VER,
588 ['S'] = HTTP_FLG_TOK | HTTP_FLG_VER,
589 ['T'] = HTTP_FLG_TOK | HTTP_FLG_VER,
590 ['U'] = HTTP_FLG_TOK,
591 ['V'] = HTTP_FLG_TOK,
592 ['W'] = HTTP_FLG_TOK,
593 ['X'] = HTTP_FLG_TOK,
594 ['Y'] = HTTP_FLG_TOK,
595 ['Z'] = HTTP_FLG_TOK,
596 ['['] = HTTP_FLG_SEP,
597 [ 92] = HTTP_FLG_SEP,
598 [']'] = HTTP_FLG_SEP,
599 ['^'] = HTTP_FLG_TOK,
600 ['_'] = HTTP_FLG_TOK,
601 ['`'] = HTTP_FLG_TOK,
602 ['a'] = HTTP_FLG_TOK,
603 ['b'] = HTTP_FLG_TOK,
604 ['c'] = HTTP_FLG_TOK,
605 ['d'] = HTTP_FLG_TOK,
606 ['e'] = HTTP_FLG_TOK,
607 ['f'] = HTTP_FLG_TOK,
608 ['g'] = HTTP_FLG_TOK,
609 ['h'] = HTTP_FLG_TOK,
610 ['i'] = HTTP_FLG_TOK,
611 ['j'] = HTTP_FLG_TOK,
612 ['k'] = HTTP_FLG_TOK,
613 ['l'] = HTTP_FLG_TOK,
614 ['m'] = HTTP_FLG_TOK,
615 ['n'] = HTTP_FLG_TOK,
616 ['o'] = HTTP_FLG_TOK,
617 ['p'] = HTTP_FLG_TOK,
618 ['q'] = HTTP_FLG_TOK,
619 ['r'] = HTTP_FLG_TOK,
620 ['s'] = HTTP_FLG_TOK,
621 ['t'] = HTTP_FLG_TOK,
622 ['u'] = HTTP_FLG_TOK,
623 ['v'] = HTTP_FLG_TOK,
624 ['w'] = HTTP_FLG_TOK,
625 ['x'] = HTTP_FLG_TOK,
626 ['y'] = HTTP_FLG_TOK,
627 ['z'] = HTTP_FLG_TOK,
628 ['{'] = HTTP_FLG_SEP,
629 ['|'] = HTTP_FLG_TOK,
630 ['}'] = HTTP_FLG_SEP,
631 ['~'] = HTTP_FLG_TOK,
632 [127] = HTTP_FLG_CTL,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]633};
634
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]635/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]636 * Adds a header and its CRLF at the tail of the message's buffer, just before
637 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]638 * The header is also automatically added to the index <hdr_idx>, and the end
639 * of headers is automatically adjusted. The number of bytes added is returned
640 * on success, otherwise <0 is returned indicating an error.
641 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]642int 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]643{
644 int bytes, len;
645
646 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]647 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]648 if (!bytes)
649 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]650 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]651 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
652}
653
654/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]655 * Adds a header and its CRLF at the tail of the message's buffer, just before
656 * 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]657 * the buffer is only opened and the space reserved, but nothing is copied.
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_tail2(struct http_msg *msg,
663 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]664{
665 int bytes;
666
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}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]673
674/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]675 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
676 * If so, returns the position of the first non-space character relative to
677 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
678 * to return a pointer to the place after the first space. Returns 0 if the
679 * header name does not match. Checks are case-insensitive.
680 */
681int http_header_match2(const char *hdr, const char *end,
682 const char *name, int len)
683{
684 const char *val;
685
686 if (hdr + len >= end)
687 return 0;
688 if (hdr[len] != ':')
689 return 0;
690 if (strncasecmp(hdr, name, len) != 0)
691 return 0;
692 val = hdr + len + 1;
693 while (val < end && HTTP_IS_SPHT(*val))
694 val++;
695 if ((val >= end) && (len + 2 <= end - hdr))
696 return len + 2; /* we may replace starting from second space */
697 return val - hdr;
698}
699
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]700/* Find the first or next occurrence of header <name> in message buffer <sol>
701 * using headers index <idx>, and return it in the <ctx> structure. This
702 * structure holds everything necessary to use the header and find next
703 * occurrence. If its <idx> member is 0, the header is searched from the
704 * beginning. Otherwise, the next occurrence is returned. The function returns
705 * 1 when it finds a value, and 0 when there is no more. It is very similar to
706 * http_find_header2() except that it is designed to work with full-line headers
707 * whose comma is not a delimiter but is part of the syntax. As a special case,
708 * if ctx->val is NULL when searching for a new values of a header, the current
709 * header is rescanned. This allows rescanning after a header deletion.
710 */
711int http_find_full_header2(const char *name, int len,
712 char *sol, struct hdr_idx *idx,
713 struct hdr_ctx *ctx)
714{
715 char *eol, *sov;
716 int cur_idx, old_idx;
717
718 cur_idx = ctx->idx;
719 if (cur_idx) {
720 /* We have previously returned a header, let's search another one */
721 sol = ctx->line;
722 eol = sol + idx->v[cur_idx].len;
723 goto next_hdr;
724 }
725
726 /* first request for this header */
727 sol += hdr_idx_first_pos(idx);
728 old_idx = 0;
729 cur_idx = hdr_idx_first_idx(idx);
730 while (cur_idx) {
731 eol = sol + idx->v[cur_idx].len;
732
733 if (len == 0) {
734 /* No argument was passed, we want any header.
735 * To achieve this, we simply build a fake request. */
736 while (sol + len < eol && sol[len] != ':')
737 len++;
738 name = sol;
739 }
740
741 if ((len < eol - sol) &&
742 (sol[len] == ':') &&
743 (strncasecmp(sol, name, len) == 0)) {
744 ctx->del = len;
745 sov = sol + len + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]746 while (sov < eol && HTTP_IS_LWS(*sov))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]747 sov++;
748
749 ctx->line = sol;
750 ctx->prev = old_idx;
751 ctx->idx = cur_idx;
752 ctx->val = sov - sol;
753 ctx->tws = 0;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]754 while (eol > sov && HTTP_IS_LWS(*(eol - 1))) {
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]755 eol--;
756 ctx->tws++;
757 }
758 ctx->vlen = eol - sov;
759 return 1;
760 }
761 next_hdr:
762 sol = eol + idx->v[cur_idx].cr + 1;
763 old_idx = cur_idx;
764 cur_idx = idx->v[cur_idx].next;
765 }
766 return 0;
767}
768
Willy Tarreauc90dc232015-02-20 13:51:36 +0100[diff] [blame]769/* Find the first or next header field in message buffer <sol> using headers
770 * index <idx>, and return it in the <ctx> structure. This structure holds
771 * everything necessary to use the header and find next occurrence. If its
772 * <idx> member is 0, the first header is retrieved. Otherwise, the next
773 * occurrence is returned. The function returns 1 when it finds a value, and
774 * 0 when there is no more. It is equivalent to http_find_full_header2() with
775 * no header name.
776 */
777int http_find_next_header(char *sol, struct hdr_idx *idx, struct hdr_ctx *ctx)
778{
779 char *eol, *sov;
780 int cur_idx, old_idx;
781 int len;
782
783 cur_idx = ctx->idx;
784 if (cur_idx) {
785 /* We have previously returned a header, let's search another one */
786 sol = ctx->line;
787 eol = sol + idx->v[cur_idx].len;
788 goto next_hdr;
789 }
790
791 /* first request for this header */
792 sol += hdr_idx_first_pos(idx);
793 old_idx = 0;
794 cur_idx = hdr_idx_first_idx(idx);
795 while (cur_idx) {
796 eol = sol + idx->v[cur_idx].len;
797
798 len = 0;
799 while (1) {
800 if (len >= eol - sol)
801 goto next_hdr;
802 if (sol[len] == ':')
803 break;
804 len++;
805 }
806
807 ctx->del = len;
808 sov = sol + len + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]809 while (sov < eol && HTTP_IS_LWS(*sov))
Willy Tarreauc90dc232015-02-20 13:51:36 +0100[diff] [blame]810 sov++;
811
812 ctx->line = sol;
813 ctx->prev = old_idx;
814 ctx->idx = cur_idx;
815 ctx->val = sov - sol;
816 ctx->tws = 0;
817
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]818 while (eol > sov && HTTP_IS_LWS(*(eol - 1))) {
Willy Tarreauc90dc232015-02-20 13:51:36 +0100[diff] [blame]819 eol--;
820 ctx->tws++;
821 }
822 ctx->vlen = eol - sov;
823 return 1;
824
825 next_hdr:
826 sol = eol + idx->v[cur_idx].cr + 1;
827 old_idx = cur_idx;
828 cur_idx = idx->v[cur_idx].next;
829 }
830 return 0;
831}
832
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]833/* Find the end of the header value contained between <s> and <e>. See RFC2616,
834 * par 2.2 for more information. Note that it requires a valid header to return
835 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]836 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]837char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]838{
839 int quoted, qdpair;
840
841 quoted = qdpair = 0;
Willy Tarreaue6d9c212016-11-05 18:23:38 +0100[diff] [blame]842
843#if defined(__x86_64__) || \
844 defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) || \
845 defined(__ARM_ARCH_7A__)
846 /* speedup: skip everything not a comma nor a double quote */
847 for (; s <= e - sizeof(int); s += sizeof(int)) {
848 unsigned int c = *(int *)s; // comma
849 unsigned int q = c; // quote
850
851 c ^= 0x2c2c2c2c; // contains one zero on a comma
852 q ^= 0x22222222; // contains one zero on a quote
853
854 c = (c - 0x01010101) & ~c; // contains 0x80 below a comma
855 q = (q - 0x01010101) & ~q; // contains 0x80 below a quote
856
857 if ((c | q) & 0x80808080)
858 break; // found a comma or a quote
859 }
860#endif
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]861 for (; s < e; s++) {
862 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]863 else if (quoted) {
864 if (*s == '\\') qdpair = 1;
865 else if (*s == '"') quoted = 0;
866 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]867 else if (*s == '"') quoted = 1;
868 else if (*s == ',') return s;
869 }
870 return s;
871}
872
873/* Find the first or next occurrence of header <name> in message buffer <sol>
874 * using headers index <idx>, and return it in the <ctx> structure. This
875 * structure holds everything necessary to use the header and find next
876 * occurrence. If its <idx> member is 0, the header is searched from the
877 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]878 * 1 when it finds a value, and 0 when there is no more. It is designed to work
879 * with headers defined as comma-separated lists. As a special case, if ctx->val
880 * is NULL when searching for a new values of a header, the current header is
881 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]882 */
883int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]884 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]885 struct hdr_ctx *ctx)
886{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]887 char *eol, *sov;
888 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]889
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]890 cur_idx = ctx->idx;
891 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]892 /* We have previously returned a value, let's search
893 * another one on the same line.
894 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]895 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]896 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]897 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]898 eol = sol + idx->v[cur_idx].len;
899
900 if (sov >= eol)
901 /* no more values in this header */
902 goto next_hdr;
903
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]904 /* values remaining for this header, skip the comma but save it
905 * for later use (eg: for header deletion).
906 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]907 sov++;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]908 while (sov < eol && HTTP_IS_LWS((*sov)))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]909 sov++;
910
911 goto return_hdr;
912 }
913
914 /* first request for this header */
915 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]916 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]917 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]918 while (cur_idx) {
919 eol = sol + idx->v[cur_idx].len;
920
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]921 if (len == 0) {
922 /* No argument was passed, we want any header.
923 * To achieve this, we simply build a fake request. */
924 while (sol + len < eol && sol[len] != ':')
925 len++;
926 name = sol;
927 }
928
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]929 if ((len < eol - sol) &&
930 (sol[len] == ':') &&
931 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]932 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]933 sov = sol + len + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]934 while (sov < eol && HTTP_IS_LWS(*sov))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]935 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]936
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]937 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]938 ctx->prev = old_idx;
939 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]940 ctx->idx = cur_idx;
941 ctx->val = sov - sol;
942
943 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]944 ctx->tws = 0;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]945 while (eol > sov && HTTP_IS_LWS(*(eol - 1))) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]946 eol--;
947 ctx->tws++;
948 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]949 ctx->vlen = eol - sov;
950 return 1;
951 }
952 next_hdr:
953 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]954 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]955 cur_idx = idx->v[cur_idx].next;
956 }
957 return 0;
958}
959
960int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]961 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]962 struct hdr_ctx *ctx)
963{
964 return http_find_header2(name, strlen(name), sol, idx, ctx);
965}
966
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]967/* Remove one value of a header. This only works on a <ctx> returned by one of
968 * the http_find_header functions. The value is removed, as well as surrounding
969 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]970 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]971 * message <msg>. The new index is returned. If it is zero, it means there is
972 * no more header, so any processing may stop. The ctx is always left in a form
973 * that can be handled by http_find_header2() to find next occurrence.
974 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]975int 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]976{
977 int cur_idx = ctx->idx;
978 char *sol = ctx->line;
979 struct hdr_idx_elem *hdr;
980 int delta, skip_comma;
981
982 if (!cur_idx)
983 return 0;
984
985 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]986 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]987 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]988 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]989 http_msg_move_end(msg, delta);
990 idx->used--;
991 hdr->len = 0; /* unused entry */
992 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]993 if (idx->tail == ctx->idx)
994 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]995 ctx->idx = ctx->prev; /* walk back to the end of previous header */
Willy Tarreau7c1c2172015-01-07 17:23:50 +0100[diff] [blame]996 ctx->line -= idx->v[ctx->idx].len + idx->v[ctx->idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]997 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]998 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]999 return ctx->idx;
1000 }
1001
1002 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]1003 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
1004 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]1005 */
1006
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]1007 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1008 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]1009 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]1010 NULL, 0);
1011 hdr->len += delta;
1012 http_msg_move_end(msg, delta);
1013 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]1014 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]1015 return ctx->idx;
1016}
1017
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1018/* This function handles a server error at the stream interface level. The
1019 * stream interface is assumed to be already in a closed state. An optional
1020 * message is copied into the input buffer, and an HTTP status code stored.
1021 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]1022 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1023 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1024static void http_server_error(struct stream *s, struct stream_interface *si,
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1025 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1026{
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]1027 FLT_STRM_CB(s, flt_http_reply(s, status, msg));
Willy Tarreau2bb4a962014-11-28 11:11:05 +0100[diff] [blame]1028 channel_auto_read(si_oc(si));
1029 channel_abort(si_oc(si));
1030 channel_auto_close(si_oc(si));
1031 channel_erase(si_oc(si));
1032 channel_auto_close(si_ic(si));
1033 channel_auto_read(si_ic(si));
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]1034 if (status > 0 && msg) {
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1035 s->txn->status = status;
Willy Tarreau2bb4a962014-11-28 11:11:05 +0100[diff] [blame]1036 bo_inject(si_ic(si), msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1037 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1038 if (!(s->flags & SF_ERR_MASK))
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]1039 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1040 if (!(s->flags & SF_FINST_MASK))
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]1041 s->flags |= finst;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1042}
1043
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1044/* This function returns the appropriate error location for the given stream
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1045 * and message.
1046 */
1047
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1048struct chunk *http_error_message(struct stream *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1049{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1050 if (s->be->errmsg[msgnum].str)
1051 return &s->be->errmsg[msgnum];
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]1052 else if (strm_fe(s)->errmsg[msgnum].str)
1053 return &strm_fe(s)->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1054 else
1055 return &http_err_chunks[msgnum];
1056}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1057
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]1058void
1059http_reply_and_close(struct stream *s, short status, struct chunk *msg)
1060{
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]1061 s->txn->flags &= ~TX_WAIT_NEXT_RQ;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]1062 FLT_STRM_CB(s, flt_http_reply(s, status, msg));
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]1063 stream_int_retnclose(&s->si[0], msg);
1064}
1065
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1066/*
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]1067 * returns a known method among HTTP_METH_* or HTTP_METH_OTHER for all unknown
1068 * ones.
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1069 */
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]1070enum http_meth_t find_http_meth(const char *str, const int len)
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1071{
1072 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1073 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1074
1075 m = ((unsigned)*str - 'A');
1076
1077 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1078 for (h = http_methods[m]; h->len > 0; h++) {
1079 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1080 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1081 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1082 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1083 };
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1084 }
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]1085 return HTTP_METH_OTHER;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1086}
1087
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1088/* Parse the URI from the given transaction (which is assumed to be in request
1089 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
1090 * It is returned otherwise.
1091 */
Thierry FOURNIER3c331782015-09-17 19:33:35 +0200[diff] [blame]1092char *http_get_path(struct http_txn *txn)
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1093{
1094 char *ptr, *end;
1095
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1096 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1097 end = ptr + txn->req.sl.rq.u_l;
1098
1099 if (ptr >= end)
1100 return NULL;
1101
1102 /* RFC2616, par. 5.1.2 :
1103 * Request-URI = "*" | absuri | abspath | authority
1104 */
1105
1106 if (*ptr == '*')
1107 return NULL;
1108
1109 if (isalpha((unsigned char)*ptr)) {
1110 /* this is a scheme as described by RFC3986, par. 3.1 */
1111 ptr++;
1112 while (ptr < end &&
1113 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
1114 ptr++;
1115 /* skip '://' */
1116 if (ptr == end || *ptr++ != ':')
1117 return NULL;
1118 if (ptr == end || *ptr++ != '/')
1119 return NULL;
1120 if (ptr == end || *ptr++ != '/')
1121 return NULL;
1122 }
1123 /* skip [user[:passwd]@]host[:[port]] */
1124
1125 while (ptr < end && *ptr != '/')
1126 ptr++;
1127
1128 if (ptr == end)
1129 return NULL;
1130
1131 /* OK, we got the '/' ! */
1132 return ptr;
1133}
1134
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]1135/* Parse the URI from the given string and look for the "/" beginning the PATH.
1136 * If not found, return NULL. It is returned otherwise.
1137 */
1138static char *
1139http_get_path_from_string(char *str)
1140{
1141 char *ptr = str;
1142
1143 /* RFC2616, par. 5.1.2 :
1144 * Request-URI = "*" | absuri | abspath | authority
1145 */
1146
1147 if (*ptr == '*')
1148 return NULL;
1149
1150 if (isalpha((unsigned char)*ptr)) {
1151 /* this is a scheme as described by RFC3986, par. 3.1 */
1152 ptr++;
1153 while (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.')
1154 ptr++;
1155 /* skip '://' */
1156 if (*ptr == '\0' || *ptr++ != ':')
1157 return NULL;
1158 if (*ptr == '\0' || *ptr++ != '/')
1159 return NULL;
1160 if (*ptr == '\0' || *ptr++ != '/')
1161 return NULL;
1162 }
1163 /* skip [user[:passwd]@]host[:[port]] */
1164
1165 while (*ptr != '\0' && *ptr != ' ' && *ptr != '/')
1166 ptr++;
1167
1168 if (*ptr == '\0' || *ptr == ' ')
1169 return NULL;
1170
1171 /* OK, we got the '/' ! */
1172 return ptr;
1173}
1174
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]1175/* Returns a 302 for a redirectable request that reaches a server working in
1176 * in redirect mode. This may only be called just after the stream interface
1177 * has moved to SI_ST_ASS. Unprocessable requests are left unchanged and will
1178 * follow normal proxy processing. NOTE: this function is designed to support
1179 * being called once data are scheduled for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1180 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1181void http_perform_server_redirect(struct stream *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1182{
1183 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1184 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1185 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1186 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1187
1188 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1189 trash.len = strlen(HTTP_302);
1190 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1191
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]1192 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1193
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1194 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1195 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1196 return;
1197
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]1198 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1199 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1200 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
1201 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]1202 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1203
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1204 /* 3: add the request URI. Since it was already forwarded, we need
1205 * to temporarily rewind the buffer.
1206 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1207 txn = s->txn;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1208 b_rew(s->req.buf, rewind = http_hdr_rewind(&txn->req));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1209
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1210 path = http_get_path(txn);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1211 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]1212
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1213 b_adv(s->req.buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1214
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1215 if (!path)
1216 return;
1217
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1218 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1219 return;
1220
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1221 memcpy(trash.str + trash.len, path, len);
1222 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1223
1224 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1225 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
1226 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1227 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1228 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
1229 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1230 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1231
1232 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]1233 si_shutr(si);
1234 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1235 si->err_type = SI_ET_NONE;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1236 si->state = SI_ST_CLO;
1237
1238 /* send the message */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1239 http_server_error(s, si, SF_ERR_LOCAL, SF_FINST_C, 302, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1240
1241 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau4521ba62013-01-24 01:25:25 +0100[diff] [blame]1242 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500[diff] [blame]1243 srv_set_sess_last(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1244}
1245
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]1246/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1247 * that the server side is closed. Note that err_type is actually a
1248 * bitmask, where almost only aborts may be cumulated with other
1249 * values. We consider that aborted operations are more important
1250 * than timeouts or errors due to the fact that nobody else in the
1251 * logs might explain incomplete retries. All others should avoid
1252 * being cumulated. It should normally not be possible to have multiple
1253 * aborts at once, but just in case, the first one in sequence is reported.
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1254 * Note that connection errors appearing on the second request of a keep-alive
1255 * connection are not reported since this allows the client to retry.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1256 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1257void http_return_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1258{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]1259 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1260
1261 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1262 http_server_error(s, si, SF_ERR_CLICL, SF_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1263 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1264 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1265 http_server_error(s, si, SF_ERR_CLICL, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1266 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1267 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1268 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1269 http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1270 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1271 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1272 http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1273 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1274 else if (err_type & SI_ET_CONN_TO)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1275 http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1276 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1277 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1278 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1279 http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_C,
1280 503, (s->flags & SF_SRV_REUSED) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1281 http_error_message(s, HTTP_ERR_503));
Willy Tarreau2d400bb2012-05-14 12:11:47 +0200[diff] [blame]1282 else if (err_type & SI_ET_CONN_RES)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1283 http_server_error(s, si, SF_ERR_RESOURCE, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1284 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1285 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1286 else /* SI_ET_CONN_OTHER and others */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1287 http_server_error(s, si, SF_ERR_INTERNAL, SF_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1288 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1289}
1290
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1291extern const char sess_term_cond[8];
1292extern const char sess_fin_state[8];
1293extern const char *monthname[12];
Willy Tarreau63986c72015-04-03 22:55:33 +0200[diff] [blame]1294struct pool_head *pool2_http_txn;
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]1295struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]1296struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]1297struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1298
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1299/*
1300 * Capture headers from message starting at <som> according to header list
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1301 * <cap_hdr>, and fill the <cap> pointers appropriately.
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1302 */
1303void capture_headers(char *som, struct hdr_idx *idx,
1304 char **cap, struct cap_hdr *cap_hdr)
1305{
1306 char *eol, *sol, *col, *sov;
1307 int cur_idx;
1308 struct cap_hdr *h;
1309 int len;
1310
1311 sol = som + hdr_idx_first_pos(idx);
1312 cur_idx = hdr_idx_first_idx(idx);
1313
1314 while (cur_idx) {
1315 eol = sol + idx->v[cur_idx].len;
1316
1317 col = sol;
1318 while (col < eol && *col != ':')
1319 col++;
1320
1321 sov = col + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]1322 while (sov < eol && HTTP_IS_LWS(*sov))
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1323 sov++;
1324
1325 for (h = cap_hdr; h; h = h->next) {
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1326 if (h->namelen && (h->namelen == col - sol) &&
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1327 (strncasecmp(sol, h->name, h->namelen) == 0)) {
1328 if (cap[h->index] == NULL)
1329 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]1330 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1331
1332 if (cap[h->index] == NULL) {
1333 Alert("HTTP capture : out of memory.\n");
1334 continue;
1335 }
1336
1337 len = eol - sov;
1338 if (len > h->len)
1339 len = h->len;
1340
1341 memcpy(cap[h->index], sov, len);
1342 cap[h->index][len]=0;
1343 }
1344 }
1345 sol = eol + idx->v[cur_idx].cr + 1;
1346 cur_idx = idx->v[cur_idx].next;
1347 }
1348}
1349
1350
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1351/* either we find an LF at <ptr> or we jump to <bad>.
1352 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1353#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]1354
1355/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
1356 * otherwise to <http_msg_ood> with <state> set to <st>.
1357 */
1358#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
1359 ptr++; \
1360 if (likely(ptr < end)) \
1361 goto good; \
1362 else { \
1363 state = (st); \
1364 goto http_msg_ood; \
1365 } \
1366 } while (0)
1367
1368
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1369/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1370 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1371 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
1372 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
1373 * will give undefined results.
1374 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1375 * and that msg->sol points to the beginning of the response.
1376 * If a complete line is found (which implies that at least one CR or LF is
1377 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1378 * returned indicating an incomplete line (which does not mean that parts have
1379 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1380 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1381 * upon next call.
1382 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1383 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1384 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1385 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1386 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1387 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1388const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1389 enum ht_state state, const char *ptr, const char *end,
1390 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1391{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1392 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1393
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1394 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1395 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1396 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1397 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1398 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
1399
1400 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1401 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1402 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1403 }
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1404 msg->err_state = HTTP_MSG_RPVER;
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1405 state = HTTP_MSG_ERROR;
1406 break;
1407
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1408 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1409 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1410 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1411 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1412 goto http_msg_rpcode;
1413 }
1414 if (likely(HTTP_IS_SPHT(*ptr)))
1415 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1416 /* so it's a CR/LF, this is invalid */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1417 msg->err_state = HTTP_MSG_RPVER_SP;
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1418 state = HTTP_MSG_ERROR;
1419 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1420
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1421 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1422 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1423 if (likely(!HTTP_IS_LWS(*ptr)))
1424 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
1425
1426 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1427 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1428 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1429 }
1430
1431 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1432 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1433 http_msg_rsp_reason:
1434 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1435 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1436 msg->sl.st.r_l = 0;
1437 goto http_msg_rpline_eol;
1438
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1439 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1440 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1441 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1442 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1443 goto http_msg_rpreason;
1444 }
1445 if (likely(HTTP_IS_SPHT(*ptr)))
1446 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1447 /* so it's a CR/LF, so there is no reason phrase */
1448 goto http_msg_rsp_reason;
1449
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1450 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1451 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1452 if (likely(!HTTP_IS_CRLF(*ptr)))
1453 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1454 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1455 http_msg_rpline_eol:
1456 /* We have seen the end of line. Note that we do not
1457 * necessarily have the \n yet, but at least we know that we
1458 * have EITHER \r OR \n, otherwise the response would not be
1459 * complete. We can then record the response length and return
1460 * to the caller which will be able to register it.
1461 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1462 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1463 return ptr;
1464
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1465 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1466#ifdef DEBUG_FULL
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1467 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1468 exit(1);
1469#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1470 ;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1471 }
1472
1473 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1474 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1475 if (ret_state)
1476 *ret_state = state;
1477 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1478 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1479 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1480}
1481
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1482/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1483 * This function parses a request line between <ptr> and <end>, starting with
1484 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1485 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1486 * will give undefined results.
1487 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1488 * and that msg->sol points to the beginning of the request.
1489 * If a complete line is found (which implies that at least one CR or LF is
1490 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1491 * returned indicating an incomplete line (which does not mean that parts have
1492 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1493 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1494 * upon next call.
1495 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1496 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1497 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1498 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1499 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1500 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1501const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1502 enum ht_state state, const char *ptr, const char *end,
1503 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1504{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1505 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1506
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1507 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1508 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1509 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1510 if (likely(HTTP_IS_TOKEN(*ptr)))
1511 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1512
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1513 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1514 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1515 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1516 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1517
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1518 if (likely(HTTP_IS_CRLF(*ptr))) {
1519 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1520 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1521 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1522 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1523 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1524 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1525 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1526 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1527 msg->sl.rq.v_l = 0;
1528 goto http_msg_rqline_eol;
1529 }
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1530 msg->err_state = HTTP_MSG_RQMETH;
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1531 state = HTTP_MSG_ERROR;
1532 break;
1533
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1534 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1535 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1536 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1537 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1538 goto http_msg_rquri;
1539 }
1540 if (likely(HTTP_IS_SPHT(*ptr)))
1541 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1542 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1543 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1544
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1545 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1546 http_msg_rquri:
Willy Tarreau5f10ea32016-11-05 17:52:06 +0100[diff] [blame]1547#if defined(__x86_64__) || \
1548 defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) || \
1549 defined(__ARM_ARCH_7A__)
1550 /* speedup: skip bytes not between 0x21 and 0x7e inclusive */
1551 while (ptr <= end - sizeof(int)) {
1552 int x = *(int *)ptr - 0x21212121;
1553 if (x & 0x80808080)
1554 break;
1555
1556 x -= 0x5e5e5e5e;
1557 if (!(x & 0x80808080))
1558 break;
1559
1560 ptr += sizeof(int);
1561 }
1562#endif
Willy Tarreau2afff9c2017-01-04 14:44:46 +0100[diff] [blame]1563 if (ptr >= end) {
1564 state = HTTP_MSG_RQURI;
1565 goto http_msg_ood;
1566 }
Willy Tarreau5f10ea32016-11-05 17:52:06 +0100[diff] [blame]1567 http_msg_rquri2:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1568 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau5f10ea32016-11-05 17:52:06 +0100[diff] [blame]1569 EAT_AND_JUMP_OR_RETURN(http_msg_rquri2, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1570
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1571 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1572 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1573 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1574 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1575
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1576 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1577 /* non-ASCII chars are forbidden unless option
1578 * accept-invalid-http-request is enabled in the frontend.
1579 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1580 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1581 if (msg->err_pos < -1)
1582 goto invalid_char;
1583 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1584 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1585 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1586 }
1587
1588 if (likely(HTTP_IS_CRLF(*ptr))) {
1589 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1590 goto http_msg_req09_uri_e;
1591 }
1592
1593 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1594 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1595 msg->err_pos = ptr - msg_start;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1596 msg->err_state = HTTP_MSG_RQURI;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1597 state = HTTP_MSG_ERROR;
1598 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1599
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1600 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1601 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1602 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1603 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1604 goto http_msg_rqver;
1605 }
1606 if (likely(HTTP_IS_SPHT(*ptr)))
1607 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1608 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1609 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1610
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1611 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1612 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1613 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1614 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1615
1616 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1617 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1618 http_msg_rqline_eol:
1619 /* We have seen the end of line. Note that we do not
1620 * necessarily have the \n yet, but at least we know that we
1621 * have EITHER \r OR \n, otherwise the request would not be
1622 * complete. We can then record the request length and return
1623 * to the caller which will be able to register it.
1624 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1625 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1626 return ptr;
1627 }
1628
1629 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1630 msg->err_state = HTTP_MSG_RQVER;
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1631 state = HTTP_MSG_ERROR;
1632 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1633
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1634 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1635#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1636 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1637 exit(1);
1638#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1639 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1640 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1641
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1642 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1643 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1644 if (ret_state)
1645 *ret_state = state;
1646 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1647 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1648 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1649}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1650
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1651/*
1652 * Returns the data from Authorization header. Function may be called more
1653 * than once so data is stored in txn->auth_data. When no header is found
1654 * 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]1655 * searching again for something we are unable to find anyway. However, if
1656 * the result if valid, the cache is not reused because we would risk to
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1657 * have the credentials overwritten by another stream in parallel.
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1658 */
1659
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]1660/* This bufffer is initialized in the file 'src/haproxy.c'. This length is
1661 * set according to global.tune.bufsize.
1662 */
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1663char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1664
1665int
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1666get_http_auth(struct stream *s)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1667{
1668
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1669 struct http_txn *txn = s->txn;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1670 struct chunk auth_method;
1671 struct hdr_ctx ctx;
1672 char *h, *p;
1673 int len;
1674
1675#ifdef DEBUG_AUTH
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1676 printf("Auth for stream %p: %d\n", s, txn->auth.method);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1677#endif
1678
1679 if (txn->auth.method == HTTP_AUTH_WRONG)
1680 return 0;
1681
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1682 txn->auth.method = HTTP_AUTH_WRONG;
1683
1684 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1685
1686 if (txn->flags & TX_USE_PX_CONN) {
1687 h = "Proxy-Authorization";
1688 len = strlen(h);
1689 } else {
1690 h = "Authorization";
1691 len = strlen(h);
1692 }
1693
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1694 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]1695 return 0;
1696
1697 h = ctx.line + ctx.val;
1698
1699 p = memchr(h, ' ', ctx.vlen);
Willy Tarreau5c557d12016-03-13 08:17:02 +0100[diff] [blame]1700 len = p - h;
1701 if (!p || len <= 0)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1702 return 0;
1703
David Carlier7365f7d2016-04-04 11:54:42 +0100[diff] [blame]1704 if (chunk_initlen(&auth_method, h, 0, len) != 1)
1705 return 0;
1706
Willy Tarreau5c557d12016-03-13 08:17:02 +0100[diff] [blame]1707 chunk_initlen(&txn->auth.method_data, p + 1, 0, ctx.vlen - len - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1708
1709 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1710
1711 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1712 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1713
1714 if (len < 0)
1715 return 0;
1716
1717
1718 get_http_auth_buff[len] = '\0';
1719
1720 p = strchr(get_http_auth_buff, ':');
1721
1722 if (!p)
1723 return 0;
1724
1725 txn->auth.user = get_http_auth_buff;
1726 *p = '\0';
1727 txn->auth.pass = p+1;
1728
1729 txn->auth.method = HTTP_AUTH_BASIC;
1730 return 1;
1731 }
1732
1733 return 0;
1734}
1735
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1736
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1737/*
1738 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1739 * depending on the initial msg->msg_state. The caller is responsible for
1740 * ensuring that the message does not wrap. The function can be preempted
1741 * everywhere when data are missing and recalled at the exact same location
1742 * with no information loss. The message may even be realigned between two
1743 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1744 * 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]1745 * fields. Note that msg->sol will be initialized after completing the first
1746 * state, so that none of the msg pointers has to be initialized prior to the
1747 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1748 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1749void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1750{
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1751 enum ht_state state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1752 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1753 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1754
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1755 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1756 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1757 ptr = buf->p + msg->next;
1758 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1759
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1760 if (unlikely(ptr >= end))
1761 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1762
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1763 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1764 /*
1765 * First, states that are specific to the response only.
1766 * We check them first so that request and headers are
1767 * closer to each other (accessed more often).
1768 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1769 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1770 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1771 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1772 /* we have a start of message, but we have to check
1773 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1774 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1775 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1776 if (unlikely(ptr != buf->p)) {
1777 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1778 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1779 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1780 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1781 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1782 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1783 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1784 hdr_idx_init(idx);
1785 state = HTTP_MSG_RPVER;
1786 goto http_msg_rpver;
1787 }
1788
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1789 if (unlikely(!HTTP_IS_CRLF(*ptr))) {
1790 state = HTTP_MSG_RPBEFORE;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1791 goto http_msg_invalid;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1792 }
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1793
1794 if (unlikely(*ptr == '\n'))
1795 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1796 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1797 /* stop here */
1798
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1799 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1800 http_msg_rpbefore_cr:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1801 EXPECT_LF_HERE(ptr, http_msg_invalid, HTTP_MSG_RPBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1802 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1803 /* stop here */
1804
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1805 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1806 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1807 case HTTP_MSG_RPVER_SP:
1808 case HTTP_MSG_RPCODE:
1809 case HTTP_MSG_RPCODE_SP:
1810 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1811 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1812 state, ptr, end,
1813 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1814 if (unlikely(!ptr))
1815 return;
1816
1817 /* we have a full response and we know that we have either a CR
1818 * or an LF at <ptr>.
1819 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1820 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1821
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1822 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1823 if (likely(*ptr == '\r'))
1824 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1825 goto http_msg_rpline_end;
1826
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1827 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1828 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1829 /* msg->sol must point to the first of CR or LF. */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1830 EXPECT_LF_HERE(ptr, http_msg_invalid, HTTP_MSG_RPLINE_END);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1831 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1832 /* stop here */
1833
1834 /*
1835 * Second, states that are specific to the request only
1836 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1837 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1838 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1839 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1840 /* we have a start of message, but we have to check
1841 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1842 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1843 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1844 if (likely(ptr != buf->p)) {
1845 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1846 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1847 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1848 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1849 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1850 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1851 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1852 state = HTTP_MSG_RQMETH;
1853 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1854 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1855
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1856 if (unlikely(!HTTP_IS_CRLF(*ptr))) {
1857 state = HTTP_MSG_RQBEFORE;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1858 goto http_msg_invalid;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1859 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1860
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1861 if (unlikely(*ptr == '\n'))
1862 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1863 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1864 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1865
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1866 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1867 http_msg_rqbefore_cr:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1868 EXPECT_LF_HERE(ptr, http_msg_invalid, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1869 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1870 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1871
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1872 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1873 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1874 case HTTP_MSG_RQMETH_SP:
1875 case HTTP_MSG_RQURI:
1876 case HTTP_MSG_RQURI_SP:
1877 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1878 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1879 state, ptr, end,
1880 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1881 if (unlikely(!ptr))
1882 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1883
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1884 /* we have a full request and we know that we have either a CR
1885 * or an LF at <ptr>.
1886 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1887 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1888
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1889 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1890 if (likely(*ptr == '\r'))
1891 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1892 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1893
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1894 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1895 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1896 /* check for HTTP/0.9 request : no version information available.
1897 * msg->sol must point to the first of CR or LF.
1898 */
1899 if (unlikely(msg->sl.rq.v_l == 0))
1900 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1901
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1902 EXPECT_LF_HERE(ptr, http_msg_invalid, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1903 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1904 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1905
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1906 /*
1907 * Common states below
1908 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1909 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1910 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1911 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1912 if (likely(!HTTP_IS_CRLF(*ptr))) {
1913 goto http_msg_hdr_name;
1914 }
1915
1916 if (likely(*ptr == '\r'))
1917 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1918 goto http_msg_last_lf;
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_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1921 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1922 /* assumes msg->sol points to the first char */
1923 if (likely(HTTP_IS_TOKEN(*ptr)))
1924 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1925
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1926 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1927 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]1928
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1929 if (likely(msg->err_pos < -1) || *ptr == '\n') {
1930 state = HTTP_MSG_HDR_NAME;
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1931 goto http_msg_invalid;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1932 }
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1933
1934 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1935 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1936
1937 /* and we still accept this non-token character */
1938 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1939
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1940 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1941 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1942 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1943 if (likely(HTTP_IS_SPHT(*ptr)))
1944 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]1945
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1946 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1947 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1948
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1949 if (likely(!HTTP_IS_CRLF(*ptr))) {
1950 goto http_msg_hdr_val;
1951 }
1952
1953 if (likely(*ptr == '\r'))
1954 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1955 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1956
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1957 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1958 http_msg_hdr_l1_lf:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1959 EXPECT_LF_HERE(ptr, http_msg_invalid, HTTP_MSG_HDR_L1_LF);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1960 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]1961
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1962 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1963 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1964 if (likely(HTTP_IS_SPHT(*ptr))) {
1965 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1966 for (; buf->p + msg->sov < ptr; msg->sov++)
1967 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1968 goto http_msg_hdr_l1_sp;
1969 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1970 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1971 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1972 goto http_msg_complete_header;
1973
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1974 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1975 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1976 /* assumes msg->sol points to the first char, and msg->sov
1977 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1978 */
Willy Tarreau0431f9d2016-11-05 17:35:40 +0100[diff] [blame]1979
1980 /* speedup: we'll skip packs of 4 or 8 bytes not containing bytes 0x0D
1981 * and lower. In fact since most of the time is spent in the loop, we
1982 * also remove the sign bit test so that bytes 0x8e..0x0d break the
1983 * loop, but we don't care since they're very rare in header values.
1984 */
1985#if defined(__x86_64__)
1986 while (ptr <= end - sizeof(long)) {
1987 if ((*(long *)ptr - 0x0e0e0e0e0e0e0e0eULL) & 0x8080808080808080ULL)
1988 goto http_msg_hdr_val2;
1989 ptr += sizeof(long);
1990 }
1991#endif
1992#if defined(__x86_64__) || \
1993 defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) || \
1994 defined(__ARM_ARCH_7A__)
1995 while (ptr <= end - sizeof(int)) {
1996 if ((*(int*)ptr - 0x0e0e0e0e) & 0x80808080)
1997 goto http_msg_hdr_val2;
1998 ptr += sizeof(int);
1999 }
2000#endif
Willy Tarreau2afff9c2017-01-04 14:44:46 +0100[diff] [blame]2001 if (ptr >= end) {
2002 state = HTTP_MSG_HDR_VAL;
2003 goto http_msg_ood;
2004 }
Willy Tarreau0431f9d2016-11-05 17:35:40 +0100[diff] [blame]2005 http_msg_hdr_val2:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2006 if (likely(!HTTP_IS_CRLF(*ptr)))
Willy Tarreau0431f9d2016-11-05 17:35:40 +0100[diff] [blame]2007 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val2, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2008
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2009 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2010 /* Note: we could also copy eol into ->eoh so that we have the
2011 * real header end in case it ends with lots of LWS, but is this
2012 * really needed ?
2013 */
2014 if (likely(*ptr == '\r'))
2015 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
2016 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2017
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2018 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]2019 http_msg_hdr_l2_lf:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2020 EXPECT_LF_HERE(ptr, http_msg_invalid, HTTP_MSG_HDR_L2_LF);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2021 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]2022
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2023 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]2024 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2025 if (unlikely(HTTP_IS_SPHT(*ptr))) {
2026 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2027 for (; buf->p + msg->eol < ptr; msg->eol++)
2028 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2029 goto http_msg_hdr_val;
2030 }
2031 http_msg_complete_header:
2032 /*
2033 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2034 * Assumes msg->sol points to the first char, msg->sov points
2035 * to the first character of the value and msg->eol to the
2036 * first CR or LF so we know how the line ends. We insert last
2037 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2038 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2039 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2040 idx, idx->tail) < 0)) {
2041 state = HTTP_MSG_HDR_L2_LWS;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2042 goto http_msg_invalid;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2043 }
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]2044
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2045 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2046 if (likely(!HTTP_IS_CRLF(*ptr))) {
2047 goto http_msg_hdr_name;
2048 }
2049
2050 if (likely(*ptr == '\r'))
2051 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
2052 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]2053
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2054 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]2055 http_msg_last_lf:
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]2056 /* Assumes msg->sol points to the first of either CR or LF.
2057 * Sets ->sov and ->next to the total header length, ->eoh to
2058 * the last CRLF, and ->eol to the last CRLF length (1 or 2).
2059 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2060 EXPECT_LF_HERE(ptr, http_msg_invalid, HTTP_MSG_LAST_LF);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2061 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2062 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]2063 msg->eoh = msg->sol;
2064 msg->sol = 0;
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]2065 msg->eol = msg->sov - msg->eoh;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]2066 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2067 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]2068
2069 case HTTP_MSG_ERROR:
2070 /* this may only happen if we call http_msg_analyser() twice with an error */
2071 break;
2072
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2073 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]2074#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2075 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
2076 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]2077#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]2078 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2079 }
2080 http_msg_ood:
2081 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]2082 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2083 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2084 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2085
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2086 http_msg_invalid:
2087 /* invalid message */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2088 msg->err_state = state;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]2089 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2090 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2091 return;
2092}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]2093
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2094/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
2095 * conversion succeeded, 0 in case of error. If the request was already 1.X,
2096 * nothing is done and 1 is returned.
2097 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2098static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2099{
2100 int delta;
2101 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2102 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2103
2104 if (msg->sl.rq.v_l != 0)
2105 return 1;
2106
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]2107 /* RFC 1945 allows only GET for HTTP/0.9 requests */
2108 if (txn->meth != HTTP_METH_GET)
2109 return 0;
2110
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2111 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2112
2113 if (msg->sl.rq.u_l == 0) {
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]2114 /* HTTP/0.9 requests *must* have a request URI, per RFC 1945 */
2115 return 0;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2116 }
2117 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2118 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]2119 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2120 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]2121 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2122 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2123 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2124 NULL, NULL);
2125 if (unlikely(!cur_end))
2126 return 0;
2127
2128 /* we have a full HTTP/1.0 request now and we know that
2129 * we have either a CR or an LF at <ptr>.
2130 */
2131 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
2132 return 1;
2133}
2134
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2135/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2136 * and "keep-alive" values. If we already know that some headers may safely
2137 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2138 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
2139 * - 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]2140 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2141 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
2142 * found, and TX_CON_*_SET is adjusted depending on what is left so only
2143 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2144 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2145 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2146void 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]2147{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2148 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2149 const char *hdr_val = "Connection";
2150 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2151
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2152 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2153 return;
2154
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2155 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2156 hdr_val = "Proxy-Connection";
2157 hdr_len = 16;
2158 }
2159
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2160 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2161 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2162 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]2163 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
2164 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2165 if (to_del & 2)
2166 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2167 else
2168 txn->flags |= TX_CON_KAL_SET;
2169 }
2170 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
2171 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2172 if (to_del & 1)
2173 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2174 else
2175 txn->flags |= TX_CON_CLO_SET;
2176 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2177 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
2178 txn->flags |= TX_HDR_CONN_UPG;
2179 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2180 }
2181
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2182 txn->flags |= TX_HDR_CONN_PRS;
2183 return;
2184}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2185
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2186/* Apply desired changes on the Connection: header. Values may be removed and/or
2187 * added depending on the <wanted> flags, which are exclusively composed of
2188 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
2189 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
2190 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2191void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2192{
2193 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2194 const char *hdr_val = "Connection";
2195 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2196
2197 ctx.idx = 0;
2198
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2199
2200 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2201 hdr_val = "Proxy-Connection";
2202 hdr_len = 16;
2203 }
2204
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2205 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2206 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]2207 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
2208 if (wanted & TX_CON_KAL_SET)
2209 txn->flags |= TX_CON_KAL_SET;
2210 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2211 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2212 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2213 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
2214 if (wanted & TX_CON_CLO_SET)
2215 txn->flags |= TX_CON_CLO_SET;
2216 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2217 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2218 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2219 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2220
2221 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
2222 return;
2223
2224 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
2225 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2226 hdr_val = "Connection: close";
2227 hdr_len = 17;
2228 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2229 hdr_val = "Proxy-Connection: close";
2230 hdr_len = 23;
2231 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2232 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2233 }
2234
2235 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
2236 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2237 hdr_val = "Connection: keep-alive";
2238 hdr_len = 22;
2239 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2240 hdr_val = "Proxy-Connection: keep-alive";
2241 hdr_len = 28;
2242 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2243 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2244 }
2245 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2246}
2247
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2248/* Parse the chunk size at msg->next. Once done, caller should adjust ->next to
2249 * point to the first byte of data after the chunk size, so that we know we can
2250 * forward exactly msg->next bytes. msg->sol contains the exact number of bytes
2251 * forming the chunk size. That way it is always possible to differentiate
2252 * between the start of the body and the start of the data. Return the number
2253 * of byte parsed on success, 0 when some data is missing, <0 on error. Note:
2254 * this function is designed to parse wrapped CRLF at the end of the buffer.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2255 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2256static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2257{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2258 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2259 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2260 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2261 const char *end = buf->data + buf->size;
2262 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2263 unsigned int chunk = 0;
2264
2265 /* The chunk size is in the following form, though we are only
2266 * interested in the size and CRLF :
2267 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
2268 */
2269 while (1) {
2270 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2271 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2272 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2273 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2274 if (c < 0) /* not a hex digit anymore */
2275 break;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2276 if (unlikely(++ptr >= end))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2277 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]2278 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2279 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2280 chunk = (chunk << 4) + c;
2281 }
2282
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2283 /* empty size not allowed */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2284 if (unlikely(ptr == ptr_old))
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2285 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2286
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]2287 while (HTTP_IS_SPHT(*ptr)) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2288 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2289 ptr = buf->data;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2290 if (unlikely(ptr == stop))
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2291 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2292 }
2293
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2294 /* Up to there, we know that at least one byte is present at *ptr. Check
2295 * for the end of chunk size.
2296 */
2297 while (1) {
2298 if (likely(HTTP_IS_CRLF(*ptr))) {
2299 /* we now have a CR or an LF at ptr */
2300 if (likely(*ptr == '\r')) {
2301 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2302 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2303 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2304 return 0;
2305 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2306
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2307 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2308 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2309 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2310 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2311 /* done */
2312 break;
2313 }
2314 else if (*ptr == ';') {
2315 /* chunk extension, ends at next CRLF */
2316 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2317 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2318 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2319 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2320
2321 while (!HTTP_IS_CRLF(*ptr)) {
2322 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2323 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2324 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2325 return 0;
2326 }
2327 /* we have a CRLF now, loop above */
2328 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2329 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2330 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2331 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2332 }
2333
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2334 /* OK we found our CRLF and now <ptr> points to the next byte, which may
2335 * or may not be present. We save the number of bytes parsed into
2336 * msg->sol.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2337 */
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2338 msg->sol = ptr - ptr_old;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2339 if (unlikely(ptr < ptr_old))
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2340 msg->sol += buf->size;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2341 msg->chunk_len = chunk;
2342 msg->body_len += chunk;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2343 return msg->sol;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2344 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2345 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2346 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2347}
2348
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2349/* This function skips trailers in the buffer associated with HTTP message
2350 * <msg>. The first visited position is msg->next. If the end of the trailers is
2351 * found, the function returns >0. So, the caller can automatically schedul it
2352 * to be forwarded, and switch msg->msg_state to HTTP_MSG_DONE. If not enough
2353 * data are available, the function does not change anything except maybe
2354 * msg->sol if it could parse some lines, and returns zero. If a parse error
2355 * is encountered, the function returns < 0 and does not change anything except
2356 * maybe msg->sol. Note that the message must already be in HTTP_MSG_TRAILERS
2357 * state before calling this function, which implies that all non-trailers data
2358 * have already been scheduled for forwarding, and that msg->next exactly
2359 * matches the length of trailers already parsed and not forwarded. It is also
2360 * important to note that this function is designed to be able to parse wrapped
2361 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2362 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2363static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2364{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2365 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2366
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2367 /* we have msg->next which points to next line. Look for CRLF. But
2368 * first, we reset msg->sol */
2369 msg->sol = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2370 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2371 const char *p1 = NULL, *p2 = NULL;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2372 const char *start = b_ptr(buf, msg->next + msg->sol);
2373 const char *stop = bi_end(buf);
2374 const char *ptr = start;
2375 int bytes = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2376
2377 /* scan current line and stop at LF or CRLF */
2378 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2379 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2380 return 0;
2381
2382 if (*ptr == '\n') {
2383 if (!p1)
2384 p1 = ptr;
2385 p2 = ptr;
2386 break;
2387 }
2388
2389 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2390 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2391 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2392 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2393 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2394 p1 = ptr;
2395 }
2396
2397 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2398 if (ptr >= buf->data + buf->size)
2399 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2400 }
2401
2402 /* after LF; point to beginning of next line */
2403 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2404 if (p2 >= buf->data + buf->size)
2405 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2406
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2407 bytes = p2 - start;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2408 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2409 bytes += buf->size;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2410 msg->sol += bytes;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2411
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2412 /* LF/CRLF at beginning of line => end of trailers at p2.
2413 * Everything was scheduled for forwarding, there's nothing left
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2414 * from this message. */
2415 if (p1 == start)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2416 return 1;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2417
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2418 /* OK, next line then */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2419 }
2420}
2421
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2422/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF or
2423 * a possible LF alone at the end of a chunk. The caller should adjust msg->next
2424 * in order to include this part into the next forwarding phase. Note that the
2425 * caller must ensure that ->p points to the first byte to parse. It returns
2426 * the number of bytes parsed on success, so the caller can set msg_state to
2427 * HTTP_MSG_CHUNK_SIZE. If not enough data are available, the function does not
2428 * change anything and returns zero. If a parse error is encountered, the
2429 * function returns < 0. Note: this function is designed to parse wrapped CRLF
2430 * at the end of the buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2431 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2432static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2433{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2434 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2435 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2436 int bytes;
2437
2438 /* NB: we'll check data availabilty at the end. It's not a
2439 * problem because whatever we match first will be checked
2440 * against the correct length.
2441 */
2442 bytes = 1;
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2443 ptr = b_ptr(buf, msg->next);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2444 if (*ptr == '\r') {
2445 bytes++;
2446 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2447 if (ptr >= buf->data + buf->size)
2448 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2449 }
2450
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2451 if (msg->next + bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2452 return 0;
2453
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2454 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2455 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2456 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2457 }
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2458 return bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2459}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2460
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2461/* Parses a qvalue and returns it multipled by 1000, from 0 to 1000. If the
2462 * value is larger than 1000, it is bound to 1000. The parser consumes up to
2463 * 1 digit, one dot and 3 digits and stops on the first invalid character.
2464 * Unparsable qvalues return 1000 as "q=1.000".
2465 */
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2466int parse_qvalue(const char *qvalue, const char **end)
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2467{
2468 int q = 1000;
2469
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2470 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2471 goto out;
2472 q = (*qvalue++ - '0') * 1000;
2473
2474 if (*qvalue++ != '.')
2475 goto out;
2476
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2477 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2478 goto out;
2479 q += (*qvalue++ - '0') * 100;
2480
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2481 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2482 goto out;
2483 q += (*qvalue++ - '0') * 10;
2484
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2485 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2486 goto out;
2487 q += (*qvalue++ - '0') * 1;
2488 out:
2489 if (q > 1000)
2490 q = 1000;
Willy Tarreau38b3aa52014-04-22 23:32:05 +0200[diff] [blame]2491 if (end)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2492 *end = qvalue;
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2493 return q;
2494}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2495
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2496void 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]2497{
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]2498 struct proxy *fe = strm_fe(s);
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2499 int tmp = TX_CON_WANT_KAL;
2500
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2501 if (!((fe->options2|s->be->options2) & PR_O2_FAKE_KA)) {
2502 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2503 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN)
2504 tmp = TX_CON_WANT_TUN;
2505
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2506 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2507 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2508 tmp = TX_CON_WANT_TUN;
2509 }
2510
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2511 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2512 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL) {
2513 /* option httpclose + server_close => forceclose */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2514 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2515 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2516 tmp = TX_CON_WANT_CLO;
2517 else
2518 tmp = TX_CON_WANT_SCL;
2519 }
2520
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2521 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2522 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL)
2523 tmp = TX_CON_WANT_CLO;
2524
2525 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
2526 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
2527
2528 if (!(txn->flags & TX_HDR_CONN_PRS) &&
2529 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) {
2530 /* parse the Connection header and possibly clean it */
2531 int to_del = 0;
2532 if ((msg->flags & HTTP_MSGF_VER_11) ||
2533 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2534 !((fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2535 to_del |= 2; /* remove "keep-alive" */
2536 if (!(msg->flags & HTTP_MSGF_VER_11))
2537 to_del |= 1; /* remove "close" */
2538 http_parse_connection_header(txn, msg, to_del);
2539 }
2540
2541 /* check if client or config asks for explicit close in KAL/SCL */
2542 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
2543 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
2544 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
2545 (!(msg->flags & HTTP_MSGF_VER_11) && !(txn->flags & TX_HDR_CONN_KAL)) || /* no "connection: k-a" in 1.0 */
2546 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2547 fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2548 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
2549}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2550
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2551/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2552 * processing can continue on next analysers, or zero if it either needs more
2553 * data or wants to immediately abort the request (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2554 * 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]2555 * when it has nothing left to do, and may remove any analyser when it wants to
2556 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2557 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2558int http_wait_for_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2559{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2560 /*
2561 * We will parse the partial (or complete) lines.
2562 * We will check the request syntax, and also join multi-line
2563 * headers. An index of all the lines will be elaborated while
2564 * parsing.
2565 *
2566 * For the parsing, we use a 28 states FSM.
2567 *
2568 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2569 * req->buf->p = beginning of request
2570 * req->buf->p + msg->eoh = end of processed headers / start of current one
2571 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2572 * msg->eol = end of current header or line (LF or CRLF)
2573 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2574 *
2575 * 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]2576 * we will set a few fields (txn->meth, sn->flags/SF_REDIRECTABLE).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2577 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2578 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2579 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2580
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2581 int cur_idx;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2582 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]2583 struct http_txn *txn = s->txn;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2584 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2585 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2586
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2587 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]2588 now_ms, __FUNCTION__,
2589 s,
2590 req,
2591 req->rex, req->wex,
2592 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2593 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2594 req->analysers);
2595
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2596 /* we're speaking HTTP here, so let's speak HTTP to the client */
2597 s->srv_error = http_return_srv_error;
2598
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2599 /* There's a protected area at the end of the buffer for rewriting
2600 * purposes. We don't want to start to parse the request if the
2601 * protected area is affected, because we may have to move processed
2602 * data later, which is much more complicated.
2603 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2604 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Thierry FOURNIER / OZON.IO4cac3592016-07-28 17:19:45 +0200[diff] [blame]2605
2606 /* This point is executed when some data is avalaible for analysis,
2607 * so we log the end of the idle time. */
2608 if (s->logs.t_idle == -1)
2609 s->logs.t_idle = tv_ms_elapsed(&s->logs.tv_accept, &now) - s->logs.t_handshake;
2610
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2611 if (txn->flags & TX_NOT_FIRST) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]2612 if (unlikely(!channel_is_rewritable(req))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2613 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2614 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2615 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2616 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2617 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]2618 req->flags |= CF_WAKE_WRITE;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2619 return 0;
2620 }
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2621 if (unlikely(bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2622 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite))
2623 buffer_slow_realign(req->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2624 }
2625
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2626 /* Note that we have the same problem with the response ; we
2627 * may want to send a redirect, error or anything which requires
2628 * some spare space. So we'll ensure that we have at least
2629 * maxrewrite bytes available in the response buffer before
2630 * processing that one. This will only affect pipelined
2631 * keep-alive requests.
2632 */
2633 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2634 unlikely(!channel_is_rewritable(&s->res) ||
2635 bi_end(s->res.buf) < b_ptr(s->res.buf, txn->rsp.next) ||
2636 bi_end(s->res.buf) > s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)) {
2637 if (s->res.buf->o) {
2638 if (s->res.flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2639 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2640 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2641 channel_dont_connect(req);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2642 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
2643 s->res.flags |= CF_WAKE_WRITE;
2644 s->res.analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2645 return 0;
2646 }
2647 }
2648
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2649 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2650 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2651 }
2652
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2653 /* 1: we might have to print this header in debug mode */
2654 if (unlikely((global.mode & MODE_DEBUG) &&
2655 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]2656 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2657 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2658
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2659 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2660 /* this is a bit complex : in case of error on the request line,
2661 * we know that rq.l is still zero, so we display only the part
2662 * up to the end of the line (truncated by debug_hdr).
2663 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2664 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2665 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2666
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2667 sol += hdr_idx_first_pos(&txn->hdr_idx);
2668 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2669
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2670 while (cur_idx) {
2671 eol = sol + txn->hdr_idx.v[cur_idx].len;
2672 debug_hdr("clihdr", s, sol, eol);
2673 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2674 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2675 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2676 }
2677
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2678
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2679 /*
2680 * Now we quickly check if we have found a full valid request.
2681 * If not so, we check the FD and buffer states before leaving.
2682 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2683 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2684 * requests are checked first. When waiting for a second request
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2685 * on a keep-alive stream, if we encounter and error, close, t/o,
2686 * we note the error in the stream flags but don't set any state.
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2687 * Since the error will be noted there, it will not be counted by
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2688 * process_stream() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2689 * Last, we may increase some tracked counters' http request errors on
2690 * the cases that are deliberately the client's fault. For instance,
2691 * a timeout or connection reset is not counted as an error. However
2692 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2693 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2694
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2695 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2696 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2697 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2698 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2699 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2700 stream_inc_http_req_ctr(s);
2701 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2702 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2703 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2704 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2705
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2706 /* 1: Since we are in header mode, if there's no space
2707 * left for headers, we won't be able to free more
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2708 * later, so the stream will never terminate. We
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2709 * must terminate it now.
2710 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2711 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2712 /* FIXME: check if URI is set and return Status
2713 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2714 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2715 stream_inc_http_req_ctr(s);
2716 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2717 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2718 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2719 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2720 goto return_bad_req;
2721 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2722
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2723 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2724 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2725 if (!(s->flags & SF_ERR_MASK))
2726 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2727
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2728 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2729 goto failed_keep_alive;
2730
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2731 if (sess->fe->options & PR_O_IGNORE_PRB)
2732 goto failed_keep_alive;
2733
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2734 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2735 if (msg->err_pos >= 0) {
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2736 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]2737 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2738 }
2739
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2740 txn->status = 400;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2741 msg->err_state = msg->msg_state;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2742 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2743 http_reply_and_close(s, txn->status, NULL);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]2744 req->analysers &= AN_REQ_FLT_END;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2745 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2746 proxy_inc_fe_req_ctr(sess->fe);
2747 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2748 if (sess->listener->counters)
2749 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2750
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2751 if (!(s->flags & SF_FINST_MASK))
2752 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2753 return 0;
2754 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2755
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2756 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2757 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]2758 if (!(s->flags & SF_ERR_MASK))
2759 s->flags |= SF_ERR_CLITO;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2760
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2761 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2762 goto failed_keep_alive;
2763
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2764 if (sess->fe->options & PR_O_IGNORE_PRB)
2765 goto failed_keep_alive;
2766
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2767 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2768 if (msg->err_pos >= 0) {
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2769 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]2770 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2771 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2772 txn->status = 408;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2773 msg->err_state = msg->msg_state;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2774 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2775 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_408));
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]2776 req->analysers &= AN_REQ_FLT_END;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2777
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2778 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2779 proxy_inc_fe_req_ctr(sess->fe);
2780 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2781 if (sess->listener->counters)
2782 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2783
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2784 if (!(s->flags & SF_FINST_MASK))
2785 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2786 return 0;
2787 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2788
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2789 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2790 else if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2791 if (!(s->flags & SF_ERR_MASK))
2792 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2793
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2794 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2795 goto failed_keep_alive;
2796
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2797 if (sess->fe->options & PR_O_IGNORE_PRB)
2798 goto failed_keep_alive;
2799
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2800 if (msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2801 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]2802 txn->status = 400;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2803 msg->err_state = msg->msg_state;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2804 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2805 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]2806 req->analysers &= AN_REQ_FLT_END;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2807 stream_inc_http_err_ctr(s);
2808 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2809 proxy_inc_fe_req_ctr(sess->fe);
2810 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2811 if (sess->listener->counters)
2812 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2813
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2814 if (!(s->flags & SF_FINST_MASK))
2815 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2816 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2817 }
2818
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2819 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2820 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2821 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2822#ifdef TCP_QUICKACK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2823 if (sess->listener->options & LI_O_NOQUICKACK && req->buf->i &&
2824 objt_conn(sess->origin) && conn_ctrl_ready(__objt_conn(sess->origin))) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2825 /* We need more data, we have to re-enable quick-ack in case we
2826 * previously disabled it, otherwise we might cause the client
2827 * to delay next data.
2828 */
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2829 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]2830 }
2831#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2832
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2833 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2834 /* If the client starts to talk, let's fall back to
2835 * request timeout processing.
2836 */
2837 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2838 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2839 }
2840
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2841 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2842 if (!tick_isset(req->analyse_exp)) {
2843 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2844 (txn->flags & TX_WAIT_NEXT_RQ) &&
2845 tick_isset(s->be->timeout.httpka))
2846 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2847 else
2848 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2849 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2850
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2851 /* we're not ready yet */
2852 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2853
2854 failed_keep_alive:
2855 /* Here we process low-level errors for keep-alive requests. In
2856 * short, if the request is not the first one and it experiences
2857 * a timeout, read error or shutdown, we just silently close so
2858 * that the client can try again.
2859 */
2860 txn->status = 0;
2861 msg->msg_state = HTTP_MSG_RQBEFORE;
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]2862 req->analysers &= AN_REQ_FLT_END;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2863 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]2864 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2865 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2866 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2867 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2868 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2869
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2870 /* OK now we have a complete HTTP request with indexed headers. Let's
2871 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2872 * 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]2873 * 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]2874 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2875 * byte after the last LF. msg->sov points to the first byte of data.
2876 * msg->eol cannot be trusted because it may have been left uninitialized
2877 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2878 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2879
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2880 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2881 proxy_inc_fe_req_ctr(sess->fe); /* one more valid request for this FE */
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2882
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2883 if (txn->flags & TX_WAIT_NEXT_RQ) {
2884 /* kill the pending keep-alive timeout */
2885 txn->flags &= ~TX_WAIT_NEXT_RQ;
2886 req->analyse_exp = TICK_ETERNITY;
2887 }
2888
2889
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2890 /* Maybe we found in invalid header name while we were configured not
2891 * to block on that, so we have to capture it now.
2892 */
2893 if (unlikely(msg->err_pos >= 0))
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2894 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]2895
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2896 /*
2897 * 1: identify the method
2898 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2899 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2900
2901 /* we can make use of server redirect on GET and HEAD */
2902 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2903 s->flags |= SF_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2904
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2905 /*
2906 * 2: check if the URI matches the monitor_uri.
2907 * We have to do this for every request which gets in, because
2908 * the monitor-uri is defined by the frontend.
2909 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2910 if (unlikely((sess->fe->monitor_uri_len != 0) &&
2911 (sess->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2912 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2913 sess->fe->monitor_uri,
2914 sess->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2915 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2916 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2917 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2918 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2919
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2920 s->flags |= SF_MONITOR;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2921 sess->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2922
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2923 /* Check if we want to fail this monitor request or not */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2924 list_for_each_entry(cond, &sess->fe->mon_fail_cond, list) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]2925 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]2926
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2927 ret = acl_pass(ret);
2928 if (cond->pol == ACL_COND_UNLESS)
2929 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2930
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2931 if (ret) {
2932 /* we fail this request, let's return 503 service unavail */
2933 txn->status = 503;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2934 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_503));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2935 if (!(s->flags & SF_ERR_MASK))
2936 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2937 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2938 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2939 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2940
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2941 /* nothing to fail, let's reply normaly */
2942 txn->status = 200;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2943 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_200));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2944 if (!(s->flags & SF_ERR_MASK))
2945 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2946 goto return_prx_cond;
2947 }
2948
2949 /*
2950 * 3: Maybe we have to copy the original REQURI for the logs ?
2951 * Note: we cannot log anymore if the request has been
2952 * classified as invalid.
2953 */
2954 if (unlikely(s->logs.logwait & LW_REQ)) {
2955 /* we have a complete HTTP request that we must log */
2956 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2957 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2958
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2959 if (urilen >= REQURI_LEN)
2960 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2961 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2962 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2963
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2964 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2965 s->do_log(s);
2966 } else {
2967 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2968 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2969 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2970
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]2971 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
2972 * exactly one digit "." one digit. This check may be disabled using
2973 * option accept-invalid-http-request.
2974 */
2975 if (!(sess->fe->options2 & PR_O2_REQBUG_OK)) {
2976 if (msg->sl.rq.v_l != 8) {
2977 msg->err_pos = msg->sl.rq.v;
2978 goto return_bad_req;
2979 }
2980
2981 if (req->buf->p[msg->sl.rq.v + 4] != '/' ||
2982 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 5]) ||
2983 req->buf->p[msg->sl.rq.v + 6] != '.' ||
2984 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 7])) {
2985 msg->err_pos = msg->sl.rq.v + 4;
2986 goto return_bad_req;
2987 }
2988 }
Willy Tarreau13317662015-05-01 13:47:08 +0200[diff] [blame]2989 else {
2990 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
2991 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
2992 goto return_bad_req;
2993 }
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]2994
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2995 /* ... and check if the request is HTTP/1.1 or above */
2996 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2997 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2998 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2999 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3000 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3001
3002 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]3003 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]3004
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3005 /* if the frontend has "option http-use-proxy-header", we'll check if
3006 * we have what looks like a proxied connection instead of a connection,
3007 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
3008 * Note that this is *not* RFC-compliant, however browsers and proxies
3009 * happen to do that despite being non-standard :-(
3010 * We consider that a request not beginning with either '/' or '*' is
3011 * a proxied connection, which covers both "scheme://location" and
3012 * CONNECT ip:port.
3013 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3014 if ((sess->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3015 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3016 txn->flags |= TX_USE_PX_CONN;
3017
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3018 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3019 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3020
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3021 /* 5: we may need to capture headers */
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]3022 if (unlikely((s->logs.logwait & LW_REQHDR) && s->req_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3023 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]3024 s->req_cap, sess->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3025
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3026 /* 6: determine the transfer-length according to RFC2616 #4.4, updated
3027 * by RFC7230#3.3.3 :
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3028 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3029 * The length of a message body is determined by one of the following
3030 * (in order of precedence):
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3031 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3032 * 1. Any response to a HEAD request and any response with a 1xx
3033 * (Informational), 204 (No Content), or 304 (Not Modified) status
3034 * code is always terminated by the first empty line after the
3035 * header fields, regardless of the header fields present in the
3036 * message, and thus cannot contain a message body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3037 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3038 * 2. Any 2xx (Successful) response to a CONNECT request implies that
3039 * the connection will become a tunnel immediately after the empty
3040 * line that concludes the header fields. A client MUST ignore any
3041 * Content-Length or Transfer-Encoding header fields received in
3042 * such a message.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3043 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3044 * 3. If a Transfer-Encoding header field is present and the chunked
3045 * transfer coding (Section 4.1) is the final encoding, the message
3046 * body length is determined by reading and decoding the chunked
3047 * data until the transfer coding indicates the data is complete.
3048 *
3049 * If a Transfer-Encoding header field is present in a response and
3050 * the chunked transfer coding is not the final encoding, the
3051 * message body length is determined by reading the connection until
3052 * it is closed by the server. If a Transfer-Encoding header field
3053 * is present in a request and the chunked transfer coding is not
3054 * the final encoding, the message body length cannot be determined
3055 * reliably; the server MUST respond with the 400 (Bad Request)
3056 * status code and then close the connection.
3057 *
3058 * If a message is received with both a Transfer-Encoding and a
3059 * Content-Length header field, the Transfer-Encoding overrides the
3060 * Content-Length. Such a message might indicate an attempt to
3061 * perform request smuggling (Section 9.5) or response splitting
3062 * (Section 9.4) and ought to be handled as an error. A sender MUST
3063 * remove the received Content-Length field prior to forwarding such
3064 * a message downstream.
3065 *
3066 * 4. If a message is received without Transfer-Encoding and with
3067 * either multiple Content-Length header fields having differing
3068 * field-values or a single Content-Length header field having an
3069 * invalid value, then the message framing is invalid and the
3070 * recipient MUST treat it as an unrecoverable error. If this is a
3071 * request message, the server MUST respond with a 400 (Bad Request)
3072 * status code and then close the connection. If this is a response
3073 * message received by a proxy, the proxy MUST close the connection
3074 * to the server, discard the received response, and send a 502 (Bad
3075 * Gateway) response to the client. If this is a response message
3076 * received by a user agent, the user agent MUST close the
3077 * connection to the server and discard the received response.
3078 *
3079 * 5. If a valid Content-Length header field is present without
3080 * Transfer-Encoding, its decimal value defines the expected message
3081 * body length in octets. If the sender closes the connection or
3082 * the recipient times out before the indicated number of octets are
3083 * received, the recipient MUST consider the message to be
3084 * incomplete and close the connection.
3085 *
3086 * 6. If this is a request message and none of the above are true, then
3087 * the message body length is zero (no message body is present).
3088 *
3089 * 7. Otherwise, this is a response message without a declared message
3090 * body length, so the message body length is determined by the
3091 * number of octets received prior to the server closing the
3092 * connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3093 */
3094
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3095 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3096 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]3097 while (http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3098 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3099 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
3100 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]3101 /* chunked not last, return badreq */
3102 goto return_bad_req;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3103 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3104 }
3105
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]3106 /* Chunked requests must have their content-length removed */
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3107 ctx.idx = 0;
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]3108 if (msg->flags & HTTP_MSGF_TE_CHNK) {
3109 while (http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx))
3110 http_remove_header2(msg, &txn->hdr_idx, &ctx);
3111 }
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]3112 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]3113 signed long long cl;
3114
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3115 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3116 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3117 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3118 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3119
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3120 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3121 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3122 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3123 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3124
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3125 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3126 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3127 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3128 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3129
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3130 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3131 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3132 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3133 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3134
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3135 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3136 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3137 }
3138
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]3139 /* even bodyless requests have a known length */
3140 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3141
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]3142 /* Until set to anything else, the connection mode is set as Keep-Alive. It will
3143 * only change if both the request and the config reference something else.
3144 * Option httpclose by itself sets tunnel mode where headers are mangled.
3145 * However, if another mode is set, it will affect it (eg: server-close/
3146 * keep-alive + httpclose = close). Note that we avoid to redo the same work
3147 * if FE and BE have the same settings (common). The method consists in
3148 * checking if options changed between the two calls (implying that either
3149 * one is non-null, or one of them is non-null and we are there for the first
3150 * time.
3151 */
3152 if (!(txn->flags & TX_HDR_CONN_PRS) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3153 ((sess->fe->options & PR_O_HTTP_MODE) != (s->be->options & PR_O_HTTP_MODE)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]3154 http_adjust_conn_mode(s, txn, msg);
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]3155
Willy Tarreau9fbe18e2015-05-01 22:42:08 +0200[diff] [blame]3156 /* we may have to wait for the request's body */
3157 if ((s->be->options & PR_O_WREQ_BODY) &&
3158 (msg->body_len || (msg->flags & HTTP_MSGF_TE_CHNK)))
3159 req->analysers |= AN_REQ_HTTP_BODY;
3160
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3161 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3162 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3163 req->analyse_exp = TICK_ETERNITY;
3164 return 1;
3165
3166 return_bad_req:
3167 /* We centralize bad requests processing here */
3168 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3169 /* we detected a parsing error. We want to archive this request
3170 * in the dedicated proxy area for later troubleshooting.
3171 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]3172 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]3173 }
3174
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]3175 txn->req.err_state = txn->req.msg_state;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3176 txn->req.msg_state = HTTP_MSG_ERROR;
3177 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]3178 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3179
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3180 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]3181 if (sess->listener->counters)
3182 sess->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3183
3184 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]3185 if (!(s->flags & SF_ERR_MASK))
3186 s->flags |= SF_ERR_PRXCOND;
3187 if (!(s->flags & SF_FINST_MASK))
3188 s->flags |= SF_FINST_R;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3189
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]3190 req->analysers &= AN_REQ_FLT_END;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3191 req->analyse_exp = TICK_ETERNITY;
3192 return 0;
3193}
3194
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]3195
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3196/* This function prepares an applet to handle the stats. It can deal with the
3197 * "100-continue" expectation, check that admin rules are met for POST requests,
3198 * and program a response message if something was unexpected. It cannot fail
3199 * 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]3200 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3201 * s->target which is supposed to already point to the stats applet. The caller
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3202 * is expected to have already assigned an appctx to the stream.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3203 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3204int http_handle_stats(struct stream *s, struct channel *req)
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3205{
3206 struct stats_admin_rule *stats_admin_rule;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]3207 struct stream_interface *si = &s->si[1];
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3208 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3209 struct http_txn *txn = s->txn;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3210 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3211 struct uri_auth *uri_auth = s->be->uri_auth;
3212 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3213 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3214
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3215 appctx = si_appctx(si);
3216 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
3217 appctx->st1 = appctx->st2 = 0;
3218 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
3219 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3220 if ((msg->flags & HTTP_MSGF_VER_11) && (s->txn->meth != HTTP_METH_HEAD))
Willy Tarreauaf3cf702014-04-22 22:19:53 +0200[diff] [blame]3221 appctx->ctx.stats.flags |= STAT_CHUNKED;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3222
3223 uri = msg->chn->buf->p + msg->sl.rq.u;
3224 lookup = uri + uri_auth->uri_len;
3225
3226 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
3227 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3228 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3229 break;
3230 }
3231 }
3232
3233 if (uri_auth->refresh) {
3234 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
3235 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3236 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3237 break;
3238 }
3239 }
3240 }
3241
3242 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
3243 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3244 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3245 break;
3246 }
3247 }
3248
Willy Tarreau1e62df92016-01-11 18:57:53 +0100[diff] [blame]3249 for (h = lookup; h <= uri + msg->sl.rq.u_l - 6; h++) {
3250 if (memcmp(h, ";typed", 6) == 0) {
3251 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
3252 appctx->ctx.stats.flags |= STAT_FMT_TYPED;
3253 break;
3254 }
3255 }
3256
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3257 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3258 if (memcmp(h, ";st=", 4) == 0) {
3259 int i;
3260 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3261 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3262 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
3263 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3264 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3265 break;
3266 }
3267 }
3268 break;
3269 }
3270 }
3271
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3272 appctx->ctx.stats.scope_str = 0;
3273 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3274 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3275 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
3276 int itx = 0;
3277 const char *h2;
3278 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
3279 const char *err;
3280
3281 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
3282 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3283 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3284 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
3285 itx++;
3286 h++;
3287 }
3288
3289 if (itx > STAT_SCOPE_TXT_MAXLEN)
3290 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3291 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3292
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3293 /* 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]3294 memcpy(scope_txt, h2, itx);
3295 scope_txt[itx] = '\0';
3296 err = invalid_char(scope_txt);
3297 if (err) {
3298 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3299 appctx->ctx.stats.scope_str = 0;
3300 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3301 }
3302 break;
3303 }
3304 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3305
3306 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3307 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3308 int ret = 1;
3309
3310 if (stats_admin_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3311 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]3312 ret = acl_pass(ret);
3313 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3314 ret = !ret;
3315 }
3316
3317 if (ret) {
3318 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3319 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3320 break;
3321 }
3322 }
3323
3324 /* Was the status page requested with a POST ? */
Willy Tarreaub8cdf522015-05-29 01:09:15 +0200[diff] [blame]3325 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3326 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreaucfe7fdd2014-04-26 22:08:32 +0200[diff] [blame]3327 /* we'll need the request body, possibly after sending 100-continue */
Willy Tarreaub8cdf522015-05-29 01:09:15 +0200[diff] [blame]3328 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE)
3329 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3330 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3331 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3332 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3333 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
3334 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]3335 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3336 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3337 else {
3338 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3339 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3340 }
3341
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3342 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3343 return 1;
3344}
3345
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3346/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
3347 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
3348 */
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3349void inet_set_tos(int fd, const struct sockaddr_storage *from, int tos)
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3350{
3351#ifdef IP_TOS
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3352 if (from->ss_family == AF_INET)
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3353 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3354#endif
3355#ifdef IPV6_TCLASS
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3356 if (from->ss_family == AF_INET6) {
3357 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)from)->sin6_addr))
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3358 /* v4-mapped addresses need IP_TOS */
3359 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3360 else
3361 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
3362 }
3363#endif
3364}
3365
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3366int http_transform_header_str(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3367 const char* name, unsigned int name_len,
3368 const char *str, struct my_regex *re,
3369 int action)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3370{
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3371 struct hdr_ctx ctx;
3372 char *buf = msg->chn->buf->p;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3373 struct hdr_idx *idx = &s->txn->hdr_idx;
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3374 int (*http_find_hdr_func)(const char *name, int len, char *sol,
3375 struct hdr_idx *idx, struct hdr_ctx *ctx);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3376 struct chunk *output = get_trash_chunk();
3377
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3378 ctx.idx = 0;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3379
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3380 /* Choose the header browsing function. */
3381 switch (action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3382 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3383 http_find_hdr_func = http_find_header2;
3384 break;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3385 case ACT_HTTP_REPLACE_HDR:
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3386 http_find_hdr_func = http_find_full_header2;
3387 break;
3388 default: /* impossible */
3389 return -1;
3390 }
3391
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3392 while (http_find_hdr_func(name, name_len, buf, idx, &ctx)) {
3393 struct hdr_idx_elem *hdr = idx->v + ctx.idx;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3394 int delta;
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3395 char *val = ctx.line + ctx.val;
3396 char* val_end = val + ctx.vlen;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3397
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3398 if (!regex_exec_match2(re, val, val_end-val, MAX_MATCH, pmatch, 0))
3399 continue;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3400
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3401 output->len = exp_replace(output->str, output->size, val, str, pmatch);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3402 if (output->len == -1)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3403 return -1;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3404
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3405 delta = buffer_replace2(msg->chn->buf, val, val_end, output->str, output->len);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3406
3407 hdr->len += delta;
3408 http_msg_move_end(msg, delta);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3409
3410 /* Adjust the length of the current value of the index. */
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3411 ctx.vlen += delta;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3412 }
3413
3414 return 0;
3415}
3416
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3417static int http_transform_header(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3418 const char* name, unsigned int name_len,
3419 struct list *fmt, struct my_regex *re,
3420 int action)
3421{
3422 struct chunk *replace = get_trash_chunk();
3423
3424 replace->len = build_logline(s, replace->str, replace->size, fmt);
3425 if (replace->len >= replace->size - 1)
3426 return -1;
3427
3428 return http_transform_header_str(s, msg, name, name_len, replace->str, re, action);
3429}
3430
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3431/* Executes the http-request rules <rules> for stream <s>, proxy <px> and
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3432 * transaction <txn>. Returns the verdict of the first rule that prevents
3433 * further processing of the request (auth, deny, ...), and defaults to
3434 * HTTP_RULE_RES_STOP if it executed all rules or stopped on an allow, or
3435 * 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]3436 * on txn->flags if it encounters a tarpit rule. If <deny_status> is not NULL
3437 * and a deny/tarpit rule is matched, it will be filled with this rule's deny
3438 * status.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3439 */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3440enum rule_result
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3441http_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]3442{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3443 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3444 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3445 struct connection *cli_conn;
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]3446 struct act_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3447 struct hdr_ctx ctx;
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3448 const char *auth_realm;
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3449 int act_flags = 0;
Thierry Fournier4b788f72016-06-01 13:35:36 +0200[diff] [blame]3450 int len;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3451
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3452 /* If "the current_rule_list" match the executed rule list, we are in
3453 * resume condition. If a resume is needed it is always in the action
3454 * and never in the ACL or converters. In this case, we initialise the
3455 * current rule, and go to the action execution point.
3456 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3457 if (s->current_rule) {
3458 rule = s->current_rule;
3459 s->current_rule = NULL;
3460 if (s->current_rule_list == rules)
3461 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3462 }
3463 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3464
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3465 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3466
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3467 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3468 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3469 int ret;
3470
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3471 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]3472 ret = acl_pass(ret);
3473
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3474 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3475 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3476
3477 if (!ret) /* condition not matched */
3478 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3479 }
3480
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3481 act_flags |= ACT_FLAG_FIRST;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3482resume_execution:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3483 switch (rule->action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3484 case ACT_ACTION_ALLOW:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3485 return HTTP_RULE_RES_STOP;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3486
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3487 case ACT_ACTION_DENY:
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3488 if (deny_status)
3489 *deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3490 return HTTP_RULE_RES_DENY;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3491
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3492 case ACT_HTTP_REQ_TARPIT:
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3493 txn->flags |= TX_CLTARPIT;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3494 if (deny_status)
3495 *deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3496 return HTTP_RULE_RES_DENY;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3497
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3498 case ACT_HTTP_REQ_AUTH:
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3499 /* Auth might be performed on regular http-req rules as well as on stats */
3500 auth_realm = rule->arg.auth.realm;
3501 if (!auth_realm) {
3502 if (px->uri_auth && rules == &px->uri_auth->http_req_rules)
3503 auth_realm = STATS_DEFAULT_REALM;
3504 else
3505 auth_realm = px->id;
3506 }
3507 /* send 401/407 depending on whether we use a proxy or not. We still
3508 * count one error, because normal browsing won't significantly
3509 * increase the counter but brute force attempts will.
3510 */
3511 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, auth_realm);
3512 txn->status = (txn->flags & TX_USE_PX_CONN) ? 407 : 401;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]3513 http_reply_and_close(s, txn->status, &trash);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3514 stream_inc_http_err_ctr(s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3515 return HTTP_RULE_RES_ABRT;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3516
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3517 case ACT_HTTP_REDIR:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3518 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3519 return HTTP_RULE_RES_BADREQ;
3520 return HTTP_RULE_RES_DONE;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3521
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3522 case ACT_HTTP_SET_NICE:
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3523 s->task->nice = rule->arg.nice;
3524 break;
3525
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3526 case ACT_HTTP_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3527 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3528 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]3529 break;
3530
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3531 case ACT_HTTP_SET_MARK:
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3532#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3533 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3534 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]3535#endif
3536 break;
3537
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3538 case ACT_HTTP_SET_LOGL:
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3539 s->logs.level = rule->arg.loglevel;
3540 break;
3541
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3542 case ACT_HTTP_REPLACE_HDR:
3543 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3544 if (http_transform_header(s, &txn->req, rule->arg.hdr_add.name,
3545 rule->arg.hdr_add.name_len,
3546 &rule->arg.hdr_add.fmt,
3547 &rule->arg.hdr_add.re, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3548 return HTTP_RULE_RES_BADREQ;
3549 break;
3550
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3551 case ACT_HTTP_DEL_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3552 ctx.idx = 0;
3553 /* remove all occurrences of the header */
3554 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3555 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3556 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3557 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3558 break;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3559
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3560 case ACT_HTTP_SET_HDR:
3561 case ACT_HTTP_ADD_HDR:
Thierry Fournier4b788f72016-06-01 13:35:36 +0200[diff] [blame]3562 /* The scope of the trash buffer must be limited to this function. The
3563 * build_logline() function can execute a lot of other function which
3564 * can use the trash buffer. So for limiting the scope of this global
3565 * buffer, we build first the header value using build_logline, and
3566 * after we store the header name.
3567 */
3568 len = rule->arg.hdr_add.name_len + 2,
3569 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]3570 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
Thierry Fournier4b788f72016-06-01 13:35:36 +0200[diff] [blame]3571 trash.str[rule->arg.hdr_add.name_len] = ':';
3572 trash.str[rule->arg.hdr_add.name_len + 1] = ' ';
3573 trash.len = len;
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3574
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3575 if (rule->action == ACT_HTTP_SET_HDR) {
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3576 /* remove all occurrences of the header */
3577 ctx.idx = 0;
3578 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3579 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3580 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
3581 }
3582 }
3583
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3584 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3585 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3586
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3587 case ACT_HTTP_DEL_ACL:
3588 case ACT_HTTP_DEL_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3589 struct pat_ref *ref;
3590 char *key;
3591 int len;
3592
3593 /* collect reference */
3594 ref = pat_ref_lookup(rule->arg.map.ref);
3595 if (!ref)
3596 continue;
3597
3598 /* collect key */
3599 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3600 key = trash.str;
3601 key[len] = '\0';
3602
3603 /* perform update */
3604 /* returned code: 1=ok, 0=ko */
3605 pat_ref_delete(ref, key);
3606
3607 break;
3608 }
3609
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3610 case ACT_HTTP_ADD_ACL: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3611 struct pat_ref *ref;
3612 char *key;
3613 struct chunk *trash_key;
3614 int len;
3615
3616 trash_key = get_trash_chunk();
3617
3618 /* collect reference */
3619 ref = pat_ref_lookup(rule->arg.map.ref);
3620 if (!ref)
3621 continue;
3622
3623 /* collect key */
3624 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3625 key = trash_key->str;
3626 key[len] = '\0';
3627
3628 /* perform update */
3629 /* add entry only if it does not already exist */
3630 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3631 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3632
3633 break;
3634 }
3635
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3636 case ACT_HTTP_SET_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3637 struct pat_ref *ref;
3638 char *key, *value;
3639 struct chunk *trash_key, *trash_value;
3640 int len;
3641
3642 trash_key = get_trash_chunk();
3643 trash_value = get_trash_chunk();
3644
3645 /* collect reference */
3646 ref = pat_ref_lookup(rule->arg.map.ref);
3647 if (!ref)
3648 continue;
3649
3650 /* collect key */
3651 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3652 key = trash_key->str;
3653 key[len] = '\0';
3654
3655 /* collect value */
3656 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3657 value = trash_value->str;
3658 value[len] = '\0';
3659
3660 /* perform update */
3661 if (pat_ref_find_elt(ref, key) != NULL)
3662 /* update entry if it exists */
3663 pat_ref_set(ref, key, value, NULL);
3664 else
3665 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3666 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3667
3668 break;
3669 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3670
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3671 case ACT_CUSTOM:
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3672 if ((px->options & PR_O_ABRT_CLOSE) && (s->req.flags & (CF_SHUTR|CF_READ_NULL|CF_READ_ERROR)))
3673 act_flags |= ACT_FLAG_FINAL;
Willy Tarreau39458682015-09-27 10:33:15 +0200[diff] [blame]3674
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3675 switch (rule->action_ptr(rule, px, s->sess, s, act_flags)) {
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3676 case ACT_RET_ERR:
3677 case ACT_RET_CONT:
3678 break;
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3679 case ACT_RET_STOP:
3680 return HTTP_RULE_RES_DONE;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3681 case ACT_RET_YIELD:
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3682 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3683 return HTTP_RULE_RES_YIELD;
3684 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3685 break;
3686
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3687 case ACT_ACTION_TRK_SC0 ... ACT_ACTION_TRK_SCMAX:
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3688 /* Note: only the first valid tracking parameter of each
3689 * applies.
3690 */
3691
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3692 if (stkctr_entry(&s->stkctr[http_trk_idx(rule->action)]) == NULL) {
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3693 struct stktable *t;
3694 struct stksess *ts;
3695 struct stktable_key *key;
3696 void *ptr;
3697
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]3698 t = rule->arg.trk_ctr.table.t;
3699 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]3700
3701 if (key && (ts = stktable_get_entry(t, key))) {
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3702 stream_track_stkctr(&s->stkctr[http_trk_idx(rule->action)], t, ts);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3703
3704 /* let's count a new HTTP request as it's the first time we do it */
3705 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT);
3706 if (ptr)
3707 stktable_data_cast(ptr, http_req_cnt)++;
3708
3709 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE);
3710 if (ptr)
3711 update_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
3712 t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1);
3713
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3714 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_CONTENT);
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3715 if (sess->fe != s->be)
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3716 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_BACKEND);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3717 }
3718 }
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3719 break;
3720
Thierry FOURNIER22e49012015-08-05 19:13:48 +0200[diff] [blame]3721 /* other flags exists, but normaly, they never be matched. */
3722 default:
3723 break;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3724 }
3725 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3726
3727 /* we reached the end of the rules, nothing to report */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3728 return HTTP_RULE_RES_CONT;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3729}
3730
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3731
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3732/* Executes the http-response rules <rules> for stream <s> and proxy <px>. It
3733 * returns one of 5 possible statuses: HTTP_RULE_RES_CONT, HTTP_RULE_RES_STOP,
3734 * HTTP_RULE_RES_DONE, HTTP_RULE_RES_YIELD, or HTTP_RULE_RES_BADREQ. If *CONT
3735 * is returned, the process can continue the evaluation of next rule list. If
3736 * *STOP or *DONE is returned, the process must stop the evaluation. If *BADREQ
3737 * is returned, it means the operation could not be processed and a server error
3738 * must be returned. It may set the TX_SVDENY on txn->flags if it encounters a
3739 * deny rule. If *YIELD is returned, the caller must call again the function
3740 * with the same context.
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3741 */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3742static enum rule_result
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3743http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s)
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3744{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3745 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3746 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3747 struct connection *cli_conn;
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]3748 struct act_rule *rule;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3749 struct hdr_ctx ctx;
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3750 int act_flags = 0;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3751
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3752 /* If "the current_rule_list" match the executed rule list, we are in
3753 * resume condition. If a resume is needed it is always in the action
3754 * and never in the ACL or converters. In this case, we initialise the
3755 * current rule, and go to the action execution point.
3756 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3757 if (s->current_rule) {
3758 rule = s->current_rule;
3759 s->current_rule = NULL;
3760 if (s->current_rule_list == rules)
3761 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3762 }
3763 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3764
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3765 list_for_each_entry(rule, rules, list) {
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3766
3767 /* check optional condition */
3768 if (rule->cond) {
3769 int ret;
3770
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3771 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]3772 ret = acl_pass(ret);
3773
3774 if (rule->cond->pol == ACL_COND_UNLESS)
3775 ret = !ret;
3776
3777 if (!ret) /* condition not matched */
3778 continue;
3779 }
3780
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3781 act_flags |= ACT_FLAG_FIRST;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3782resume_execution:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3783 switch (rule->action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3784 case ACT_ACTION_ALLOW:
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3785 return HTTP_RULE_RES_STOP; /* "allow" rules are OK */
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3786
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3787 case ACT_ACTION_DENY:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3788 txn->flags |= TX_SVDENY;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3789 return HTTP_RULE_RES_STOP;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3790
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3791 case ACT_HTTP_SET_NICE:
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3792 s->task->nice = rule->arg.nice;
3793 break;
3794
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3795 case ACT_HTTP_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3796 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3797 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]3798 break;
3799
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3800 case ACT_HTTP_SET_MARK:
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3801#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3802 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3803 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]3804#endif
3805 break;
3806
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3807 case ACT_HTTP_SET_LOGL:
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3808 s->logs.level = rule->arg.loglevel;
3809 break;
3810
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3811 case ACT_HTTP_REPLACE_HDR:
3812 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3813 if (http_transform_header(s, &txn->rsp, rule->arg.hdr_add.name,
3814 rule->arg.hdr_add.name_len,
3815 &rule->arg.hdr_add.fmt,
3816 &rule->arg.hdr_add.re, rule->action))
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3817 return HTTP_RULE_RES_STOP; /* note: we should report an error here */
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3818 break;
3819
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3820 case ACT_HTTP_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3821 ctx.idx = 0;
3822 /* remove all occurrences of the header */
3823 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3824 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3825 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3826 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3827 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3828
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3829 case ACT_HTTP_SET_HDR:
3830 case ACT_HTTP_ADD_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3831 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3832 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3833 trash.len = rule->arg.hdr_add.name_len;
3834 trash.str[trash.len++] = ':';
3835 trash.str[trash.len++] = ' ';
3836 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]3837
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3838 if (rule->action == ACT_HTTP_SET_HDR) {
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3839 /* remove all occurrences of the header */
3840 ctx.idx = 0;
3841 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3842 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3843 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3844 }
3845 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3846 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3847 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3848
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3849 case ACT_HTTP_DEL_ACL:
3850 case ACT_HTTP_DEL_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3851 struct pat_ref *ref;
3852 char *key;
3853 int len;
3854
3855 /* collect reference */
3856 ref = pat_ref_lookup(rule->arg.map.ref);
3857 if (!ref)
3858 continue;
3859
3860 /* collect key */
3861 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3862 key = trash.str;
3863 key[len] = '\0';
3864
3865 /* perform update */
3866 /* returned code: 1=ok, 0=ko */
3867 pat_ref_delete(ref, key);
3868
3869 break;
3870 }
3871
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3872 case ACT_HTTP_ADD_ACL: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3873 struct pat_ref *ref;
3874 char *key;
3875 struct chunk *trash_key;
3876 int len;
3877
3878 trash_key = get_trash_chunk();
3879
3880 /* collect reference */
3881 ref = pat_ref_lookup(rule->arg.map.ref);
3882 if (!ref)
3883 continue;
3884
3885 /* collect key */
3886 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3887 key = trash_key->str;
3888 key[len] = '\0';
3889
3890 /* perform update */
3891 /* check if the entry already exists */
3892 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3893 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3894
3895 break;
3896 }
3897
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3898 case ACT_HTTP_SET_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3899 struct pat_ref *ref;
3900 char *key, *value;
3901 struct chunk *trash_key, *trash_value;
3902 int len;
3903
3904 trash_key = get_trash_chunk();
3905 trash_value = get_trash_chunk();
3906
3907 /* collect reference */
3908 ref = pat_ref_lookup(rule->arg.map.ref);
3909 if (!ref)
3910 continue;
3911
3912 /* collect key */
3913 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3914 key = trash_key->str;
3915 key[len] = '\0';
3916
3917 /* collect value */
3918 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3919 value = trash_value->str;
3920 value[len] = '\0';
3921
3922 /* perform update */
3923 if (pat_ref_find_elt(ref, key) != NULL)
3924 /* update entry if it exists */
3925 pat_ref_set(ref, key, value, NULL);
3926 else
3927 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3928 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3929
3930 break;
3931 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3932
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3933 case ACT_HTTP_REDIR:
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3934 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3935 return HTTP_RULE_RES_BADREQ;
3936 return HTTP_RULE_RES_DONE;
3937
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3938 case ACT_ACTION_TRK_SC0 ... ACT_ACTION_TRK_SCMAX:
3939 /* Note: only the first valid tracking parameter of each
3940 * applies.
3941 */
3942
3943 if (stkctr_entry(&s->stkctr[http_trk_idx(rule->action)]) == NULL) {
3944 struct stktable *t;
3945 struct stksess *ts;
3946 struct stktable_key *key;
3947 void *ptr;
3948
3949 t = rule->arg.trk_ctr.table.t;
3950 key = stktable_fetch_key(t, s->be, sess, s, SMP_OPT_DIR_RES | SMP_OPT_FINAL, rule->arg.trk_ctr.expr, NULL);
3951
3952 if (key && (ts = stktable_get_entry(t, key))) {
3953 stream_track_stkctr(&s->stkctr[http_trk_idx(rule->action)], t, ts);
3954
3955 /* let's count a new HTTP request as it's the first time we do it */
3956 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT);
3957 if (ptr)
3958 stktable_data_cast(ptr, http_req_cnt)++;
3959
3960 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE);
3961 if (ptr)
3962 update_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
3963 t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1);
3964
3965 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_CONTENT);
3966 if (sess->fe != s->be)
3967 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_BACKEND);
3968
3969 /* When the client triggers a 4xx from the server, it's most often due
3970 * to a missing object or permission. These events should be tracked
3971 * because if they happen often, it may indicate a brute force or a
3972 * vulnerability scan. Normally this is done when receiving the response
3973 * but here we're tracking after this ought to have been done so we have
3974 * to do it on purpose.
3975 */
Willy Tarreau3146a4c2016-07-26 15:22:33 +0200[diff] [blame]3976 if ((unsigned)(txn->status - 400) < 100) {
3977 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_ERR_CNT);
3978 if (ptr)
3979 stktable_data_cast(ptr, http_err_cnt)++;
3980
3981 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_ERR_RATE);
3982 if (ptr)
3983 update_freq_ctr_period(&stktable_data_cast(ptr, http_err_rate),
3984 t->data_arg[STKTABLE_DT_HTTP_ERR_RATE].u, 1);
3985 }
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3986 }
3987 }
3988 break;
3989
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3990 case ACT_CUSTOM:
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3991 if ((px->options & PR_O_ABRT_CLOSE) && (s->req.flags & (CF_SHUTR|CF_READ_NULL|CF_READ_ERROR)))
3992 act_flags |= ACT_FLAG_FINAL;
Willy Tarreau39458682015-09-27 10:33:15 +0200[diff] [blame]3993
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3994 switch (rule->action_ptr(rule, px, s->sess, s, act_flags)) {
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3995 case ACT_RET_ERR:
3996 case ACT_RET_CONT:
3997 break;
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3998 case ACT_RET_STOP:
3999 return HTTP_RULE_RES_STOP;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]4000 case ACT_RET_YIELD:
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]4001 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4002 return HTTP_RULE_RES_YIELD;
4003 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]4004 break;
4005
Thierry FOURNIER22e49012015-08-05 19:13:48 +0200[diff] [blame]4006 /* other flags exists, but normaly, they never be matched. */
4007 default:
4008 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]4009 }
4010 }
4011
4012 /* we reached the end of the rules, nothing to report */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]4013 return HTTP_RULE_RES_CONT;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]4014}
4015
4016
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4017/* Perform an HTTP redirect based on the information in <rule>. The function
4018 * returns non-zero on success, or zero in case of a, irrecoverable error such
4019 * as too large a request to build a valid response.
4020 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4021static 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]4022{
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4023 struct http_msg *req = &txn->req;
4024 struct http_msg *res = &txn->rsp;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4025 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4026 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4027
4028 /* build redirect message */
4029 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]4030 case 308:
4031 msg_fmt = HTTP_308;
4032 break;
4033 case 307:
4034 msg_fmt = HTTP_307;
4035 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4036 case 303:
4037 msg_fmt = HTTP_303;
4038 break;
4039 case 301:
4040 msg_fmt = HTTP_301;
4041 break;
4042 case 302:
4043 default:
4044 msg_fmt = HTTP_302;
4045 break;
4046 }
4047
4048 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
4049 return 0;
4050
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4051 location = trash.str + trash.len;
4052
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4053 switch(rule->type) {
4054 case REDIRECT_TYPE_SCHEME: {
4055 const char *path;
4056 const char *host;
4057 struct hdr_ctx ctx;
4058 int pathlen;
4059 int hostlen;
4060
4061 host = "";
4062 hostlen = 0;
4063 ctx.idx = 0;
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4064 if (http_find_header2("Host", 4, req->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4065 host = ctx.line + ctx.val;
4066 hostlen = ctx.vlen;
4067 }
4068
4069 path = http_get_path(txn);
4070 /* build message using path */
4071 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4072 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]4073 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
4074 int qs = 0;
4075 while (qs < pathlen) {
4076 if (path[qs] == '?') {
4077 pathlen = qs;
4078 break;
4079 }
4080 qs++;
4081 }
4082 }
4083 } else {
4084 path = "/";
4085 pathlen = 1;
4086 }
4087
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4088 if (rule->rdr_str) { /* this is an old "redirect" rule */
4089 /* check if we can add scheme + "://" + host + path */
4090 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
4091 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4092
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4093 /* add scheme */
4094 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
4095 trash.len += rule->rdr_len;
4096 }
4097 else {
4098 /* add scheme with executing log format */
4099 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4100
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4101 /* check if we can add scheme + "://" + host + path */
4102 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
4103 return 0;
4104 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4105 /* add "://" */
4106 memcpy(trash.str + trash.len, "://", 3);
4107 trash.len += 3;
4108
4109 /* add host */
4110 memcpy(trash.str + trash.len, host, hostlen);
4111 trash.len += hostlen;
4112
4113 /* add path */
4114 memcpy(trash.str + trash.len, path, pathlen);
4115 trash.len += pathlen;
4116
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4117 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4118 if (trash.len && trash.str[trash.len - 1] != '/' &&
4119 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
4120 if (trash.len > trash.size - 5)
4121 return 0;
4122 trash.str[trash.len] = '/';
4123 trash.len++;
4124 }
4125
4126 break;
4127 }
4128 case REDIRECT_TYPE_PREFIX: {
4129 const char *path;
4130 int pathlen;
4131
4132 path = http_get_path(txn);
4133 /* build message using path */
4134 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4135 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]4136 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
4137 int qs = 0;
4138 while (qs < pathlen) {
4139 if (path[qs] == '?') {
4140 pathlen = qs;
4141 break;
4142 }
4143 qs++;
4144 }
4145 }
4146 } else {
4147 path = "/";
4148 pathlen = 1;
4149 }
4150
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4151 if (rule->rdr_str) { /* this is an old "redirect" rule */
4152 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
4153 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4154
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4155 /* add prefix. Note that if prefix == "/", we don't want to
4156 * add anything, otherwise it makes it hard for the user to
4157 * configure a self-redirection.
4158 */
4159 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
4160 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
4161 trash.len += rule->rdr_len;
4162 }
4163 }
4164 else {
4165 /* add prefix with executing log format */
4166 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
4167
4168 /* Check length */
4169 if (trash.len + pathlen > trash.size - 4)
4170 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4171 }
4172
4173 /* add path */
4174 memcpy(trash.str + trash.len, path, pathlen);
4175 trash.len += pathlen;
4176
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4177 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4178 if (trash.len && trash.str[trash.len - 1] != '/' &&
4179 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
4180 if (trash.len > trash.size - 5)
4181 return 0;
4182 trash.str[trash.len] = '/';
4183 trash.len++;
4184 }
4185
4186 break;
4187 }
4188 case REDIRECT_TYPE_LOCATION:
4189 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4190 if (rule->rdr_str) { /* this is an old "redirect" rule */
4191 if (trash.len + rule->rdr_len > trash.size - 4)
4192 return 0;
4193
4194 /* add location */
4195 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
4196 trash.len += rule->rdr_len;
4197 }
4198 else {
4199 /* add location with executing log format */
4200 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4201
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4202 /* Check left length */
4203 if (trash.len > trash.size - 4)
4204 return 0;
4205 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4206 break;
4207 }
4208
4209 if (rule->cookie_len) {
4210 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
4211 trash.len += 14;
4212 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
4213 trash.len += rule->cookie_len;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4214 }
4215
4216 /* add end of headers and the keep-alive/close status.
4217 * We may choose to set keep-alive if the Location begins
4218 * with a slash, because the client will come back to the
4219 * same server.
4220 */
4221 txn->status = rule->code;
4222 /* let's log the request time */
4223 s->logs.tv_request = now;
4224
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4225 if (*location == '/' &&
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4226 (req->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau2de8a502015-05-28 17:23:54 +0200[diff] [blame]4227 ((!(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]4228 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
4229 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
4230 /* keep-alive possible */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4231 if (!(req->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4232 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4233 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
4234 trash.len += 30;
4235 } else {
4236 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
4237 trash.len += 24;
4238 }
4239 }
4240 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
4241 trash.len += 4;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]4242 FLT_STRM_CB(s, flt_http_reply(s, txn->status, &trash));
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4243 bo_inject(res->chn, trash.str, trash.len);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4244 /* "eat" the request */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4245 bi_fast_delete(req->chn->buf, req->sov);
4246 req->next -= req->sov;
4247 req->sov = 0;
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4248 s->req.analysers = AN_REQ_HTTP_XFER_BODY | (s->req.analysers & AN_REQ_FLT_END);
4249 s->res.analysers = AN_RES_HTTP_XFER_BODY | (s->req.analysers & AN_RES_FLT_END);
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4250 req->msg_state = HTTP_MSG_CLOSED;
4251 res->msg_state = HTTP_MSG_DONE;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]4252 /* Trim any possible response */
4253 res->chn->buf->i = 0;
4254 res->next = res->sov = 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4255 } else {
4256 /* keep-alive not possible */
4257 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4258 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
4259 trash.len += 29;
4260 } else {
4261 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
4262 trash.len += 23;
4263 }
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4264 http_reply_and_close(s, txn->status, &trash);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4265 req->chn->analysers &= AN_REQ_FLT_END;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4266 }
4267
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4268 if (!(s->flags & SF_ERR_MASK))
4269 s->flags |= SF_ERR_LOCAL;
4270 if (!(s->flags & SF_FINST_MASK))
4271 s->flags |= SF_FINST_R;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4272
4273 return 1;
4274}
4275
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4276/* This stream analyser runs all HTTP request processing which is common to
4277 * frontends and backends, which means blocking ACLs, filters, connection-close,
4278 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4279 * 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]4280 * either needs more data or wants to immediately abort the request (eg: deny,
4281 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4282 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4283int 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]4284{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4285 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4286 struct http_txn *txn = s->txn;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4287 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4288 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]4289 struct cond_wordlist *wl;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4290 enum rule_result verdict;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4291 int deny_status = HTTP_ERR_403;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4292
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4293 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4294 /* we need more data */
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4295 goto return_prx_yield;
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4296 }
4297
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4298 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]4299 now_ms, __FUNCTION__,
4300 s,
4301 req,
4302 req->rex, req->wex,
4303 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4304 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4305 req->analysers);
4306
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4307 /* just in case we have some per-backend tracking */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4308 stream_inc_be_http_req_ctr(s);
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4309
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4310 /* evaluate http-request rules */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4311 if (!LIST_ISEMPTY(&px->http_req_rules)) {
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4312 verdict = http_req_get_intercept_rule(px, &px->http_req_rules, s, &deny_status);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]4313
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4314 switch (verdict) {
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4315 case HTTP_RULE_RES_YIELD: /* some data miss, call the function later. */
4316 goto return_prx_yield;
4317
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4318 case HTTP_RULE_RES_CONT:
4319 case HTTP_RULE_RES_STOP: /* nothing to do */
4320 break;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4321
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4322 case HTTP_RULE_RES_DENY: /* deny or tarpit */
4323 if (txn->flags & TX_CLTARPIT)
4324 goto tarpit;
4325 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4326
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4327 case HTTP_RULE_RES_ABRT: /* abort request, response already sent. Eg: auth */
4328 goto return_prx_cond;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4329
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4330 case HTTP_RULE_RES_DONE: /* OK, but terminate request processing (eg: redirect) */
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4331 goto done;
4332
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4333 case HTTP_RULE_RES_BADREQ: /* failed with a bad request */
4334 goto return_bad_req;
4335 }
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4336 }
4337
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4338 /* OK at this stage, we know that the request was accepted according to
4339 * the http-request rules, we can check for the stats. Note that the
4340 * URI is detected *before* the req* rules in order not to be affected
4341 * by a possible reqrep, while they are processed *after* so that a
4342 * reqdeny can still block them. This clearly needs to change in 1.6!
4343 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4344 if (stats_check_uri(&s->si[1], txn, px)) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4345 s->target = &http_stats_applet.obj_type;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4346 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target)))) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4347 txn->status = 500;
4348 s->logs.tv_request = now;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4349 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]4350
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4351 if (!(s->flags & SF_ERR_MASK))
4352 s->flags |= SF_ERR_RESOURCE;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4353 goto return_prx_cond;
4354 }
4355
4356 /* parse the whole stats request and extract the relevant information */
4357 http_handle_stats(s, req);
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4358 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]4359 /* not all actions implemented: deny, allow, auth */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4360
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4361 if (verdict == HTTP_RULE_RES_DENY) /* stats http-request deny */
4362 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4363
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4364 if (verdict == HTTP_RULE_RES_ABRT) /* stats auth / stats http-request auth */
4365 goto return_prx_cond;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]4366 }
4367
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4368 /* evaluate the req* rules except reqadd */
4369 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]4370 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4371 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4372
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4373 if (txn->flags & TX_CLDENY)
4374 goto deny;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]4375
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4376 if (txn->flags & TX_CLTARPIT)
4377 goto tarpit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4378 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4379
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4380 /* add request headers from the rule sets in the same order */
4381 list_for_each_entry(wl, &px->req_add, list) {
4382 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4383 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]4384 ret = acl_pass(ret);
4385 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
4386 ret = !ret;
4387 if (!ret)
4388 continue;
4389 }
4390
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4391 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4392 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]4393 }
4394
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4395
4396 /* Proceed with the stats now. */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]4397 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]4398 /* process the stats request now */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4399 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
4400 sess->fe->fe_counters.intercepted_req++;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4401
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4402 if (!(s->flags & SF_ERR_MASK)) // this is not really an error but it is
4403 s->flags |= SF_ERR_LOCAL; // to mark that it comes from the proxy
4404 if (!(s->flags & SF_FINST_MASK))
4405 s->flags |= SF_FINST_R;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4406
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4407 /* 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]4408 req->analysers &= (AN_REQ_HTTP_BODY | AN_REQ_FLT_HTTP_HDRS | AN_REQ_FLT_END);
4409 req->analysers &= ~AN_REQ_FLT_XFER_DATA;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4410 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4411 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4412 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4413
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4414 /* check whether we have some ACLs set to redirect this request */
4415 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4416 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4417 int ret;
4418
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4419 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]4420 ret = acl_pass(ret);
4421 if (rule->cond->pol == ACL_COND_UNLESS)
4422 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4423 if (!ret)
4424 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4425 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4426 if (!http_apply_redirect_rule(rule, s, txn))
4427 goto return_bad_req;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4428 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4429 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4430
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4431 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
4432 * If this happens, then the data will not come immediately, so we must
4433 * send all what we have without waiting. Note that due to the small gain
4434 * 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]4435 * 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]4436 * itself once used.
4437 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4438 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4439
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4440 done: /* done with this analyser, continue with next ones that the calling
4441 * points will have set, if any.
4442 */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4443 req->analyse_exp = TICK_ETERNITY;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4444 done_without_exp: /* done with this analyser, but dont reset the analyse_exp. */
4445 req->analysers &= ~an_bit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4446 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4447
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4448 tarpit:
4449 /* When a connection is tarpitted, we use the tarpit timeout,
4450 * which may be the same as the connect timeout if unspecified.
4451 * If unset, then set it to zero because we really want it to
4452 * eventually expire. We build the tarpit as an analyser.
4453 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4454 channel_erase(&s->req);
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4455
4456 /* wipe the request out so that we can drop the connection early
4457 * if the client closes first.
4458 */
4459 channel_dont_connect(req);
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]4460
4461 /* Allow cookie logging
4462 */
4463 if (s->be->cookie_name || sess->fe->capture_name)
4464 manage_client_side_cookies(s, req);
4465
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4466 req->analysers &= AN_REQ_FLT_END; /* remove switching rules etc... */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4467 req->analysers |= AN_REQ_HTTP_TARPIT;
4468 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
4469 if (!req->analyse_exp)
4470 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4471 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4472 sess->fe->fe_counters.denied_req++;
4473 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4474 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4475 if (sess->listener->counters)
4476 sess->listener->counters->denied_req++;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4477 goto done_without_exp;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4478
4479 deny: /* this request was blocked (denied) */
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]4480
4481 /* Allow cookie logging
4482 */
4483 if (s->be->cookie_name || sess->fe->capture_name)
4484 manage_client_side_cookies(s, req);
4485
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4486 txn->flags |= TX_CLDENY;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4487 txn->status = http_err_codes[deny_status];
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4488 s->logs.tv_request = now;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4489 http_reply_and_close(s, txn->status, http_error_message(s, deny_status));
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4490 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4491 sess->fe->fe_counters.denied_req++;
4492 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4493 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4494 if (sess->listener->counters)
4495 sess->listener->counters->denied_req++;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4496 goto return_prx_cond;
4497
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4498 return_bad_req:
4499 /* We centralize bad requests processing here */
4500 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
4501 /* we detected a parsing error. We want to archive this request
4502 * in the dedicated proxy area for later troubleshooting.
4503 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]4504 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]4505 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4506
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]4507 txn->req.err_state = txn->req.msg_state;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4508 txn->req.msg_state = HTTP_MSG_ERROR;
4509 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4510 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4511
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4512 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4513 if (sess->listener->counters)
4514 sess->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4515
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4516 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4517 if (!(s->flags & SF_ERR_MASK))
4518 s->flags |= SF_ERR_PRXCOND;
4519 if (!(s->flags & SF_FINST_MASK))
4520 s->flags |= SF_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]4521
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4522 req->analysers &= AN_REQ_FLT_END;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4523 req->analyse_exp = TICK_ETERNITY;
4524 return 0;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4525
4526 return_prx_yield:
4527 channel_dont_connect(req);
4528 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4529}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4530
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4531/* This function performs all the processing enabled for the current request.
4532 * It returns 1 if the processing can continue on next analysers, or zero if it
4533 * needs more data, encounters an error, or wants to immediately abort the
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4534 * request. It relies on buffers flags, and updates s->req.analysers.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4535 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4536int http_process_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4537{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4538 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4539 struct http_txn *txn = s->txn;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4540 struct http_msg *msg = &txn->req;
Willy Tarreauee335e62015-04-21 18:15:13 +0200[diff] [blame]4541 struct connection *cli_conn = objt_conn(strm_sess(s)->origin);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4542
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4543 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4544 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4545 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4546 return 0;
4547 }
4548
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4549 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]4550 now_ms, __FUNCTION__,
4551 s,
4552 req,
4553 req->rex, req->wex,
4554 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4555 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4556 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4557
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4558 /*
4559 * Right now, we know that we have processed the entire headers
4560 * and that unwanted requests have been filtered out. We can do
4561 * whatever we want with the remaining request. Also, now we
4562 * may have separate values for ->fe, ->be.
4563 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4564
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4565 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4566 * If HTTP PROXY is set we simply get remote server address parsing
4567 * incoming request. Note that this requires that a connection is
4568 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4569 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4570 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SF_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4571 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4572 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4573
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]4574 /* Note that for now we don't reuse existing proxy connections */
Willy Tarreau973a5422015-08-05 21:47:23 +0200[diff] [blame]4575 if (unlikely((conn = si_alloc_conn(&s->si[1])) == NULL)) {
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]4576 txn->req.err_state = txn->req.msg_state;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4577 txn->req.msg_state = HTTP_MSG_ERROR;
4578 txn->status = 500;
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4579 req->analysers &= AN_REQ_FLT_END;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4580 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_500));
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4581
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4582 if (!(s->flags & SF_ERR_MASK))
4583 s->flags |= SF_ERR_RESOURCE;
4584 if (!(s->flags & SF_FINST_MASK))
4585 s->flags |= SF_FINST_R;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4586
4587 return 0;
4588 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4589
4590 path = http_get_path(txn);
4591 url2sa(req->buf->p + msg->sl.rq.u,
4592 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]4593 &conn->addr.to, NULL);
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4594 /* if the path was found, we have to remove everything between
4595 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
4596 * found, we need to replace from req->buf->p + msg->sl.rq.u for
4597 * u_l characters by a single "/".
4598 */
4599 if (path) {
4600 char *cur_ptr = req->buf->p;
4601 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4602 int delta;
4603
4604 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
4605 http_msg_move_end(&txn->req, delta);
4606 cur_end += delta;
4607 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4608 goto return_bad_req;
4609 }
4610 else {
4611 char *cur_ptr = req->buf->p;
4612 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4613 int delta;
4614
4615 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
4616 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
4617 http_msg_move_end(&txn->req, delta);
4618 cur_end += delta;
4619 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4620 goto return_bad_req;
4621 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4622 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4623
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4624 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4625 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4626 * Note that doing so might move headers in the request, but
4627 * the fields will stay coherent and the URI will not move.
4628 * This should only be performed in the backend.
4629 */
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]4630 if (s->be->cookie_name || sess->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4631 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]4632
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4633 /* add unique-id if "header-unique-id" is specified */
4634
Thierry Fournierf4011dd2016-03-29 17:23:51 +0200[diff] [blame]4635 if (!LIST_ISEMPTY(&sess->fe->format_unique_id) && !s->unique_id) {
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4636 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
4637 goto return_bad_req;
4638 s->unique_id[0] = '\0';
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4639 build_logline(s, s->unique_id, UNIQUEID_LEN, &sess->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4640 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4641
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4642 if (sess->fe->header_unique_id && s->unique_id) {
4643 chunk_printf(&trash, "%s: %s", sess->fe->header_unique_id, s->unique_id);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4644 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4645 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4646 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]4647 goto return_bad_req;
4648 }
4649
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4650 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4651 * 9: add X-Forwarded-For if either the frontend or the backend
4652 * asks for it.
4653 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4654 if ((sess->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4655 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4656 if (!((sess->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
4657 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : sess->fe->fwdfor_hdr_name,
4658 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]4659 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4660 /* The header is set to be added only if none is present
4661 * and we found it, so don't do anything.
4662 */
4663 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4664 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4665 /* Add an X-Forwarded-For header unless the source IP is
4666 * in the 'except' network range.
4667 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4668 if ((!sess->fe->except_mask.s_addr ||
4669 (((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr & sess->fe->except_mask.s_addr)
4670 != sess->fe->except_net.s_addr) &&
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4671 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4672 (((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]4673 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4674 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4675 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4676 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4677
4678 /* Note: we rely on the backend to get the header name to be used for
4679 * x-forwarded-for, because the header is really meant for the backends.
4680 * However, if the backend did not specify any option, we have to rely
4681 * on the frontend's header name.
4682 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4683 if (s->be->fwdfor_hdr_len) {
4684 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4685 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4686 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4687 len = sess->fe->fwdfor_hdr_len;
4688 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4689 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4690 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]4691
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4692 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]4693 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4694 }
4695 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4696 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4697 /* FIXME: for the sake of completeness, we should also support
4698 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4699 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4700 int len;
4701 char pn[INET6_ADDRSTRLEN];
4702 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4703 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4704 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4705
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4706 /* Note: we rely on the backend to get the header name to be used for
4707 * x-forwarded-for, because the header is really meant for the backends.
4708 * However, if the backend did not specify any option, we have to rely
4709 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4710 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4711 if (s->be->fwdfor_hdr_len) {
4712 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4713 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4714 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4715 len = sess->fe->fwdfor_hdr_len;
4716 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4717 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4718 len += snprintf(trash.str + len, trash.size - len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4719
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4720 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]4721 goto return_bad_req;
4722 }
4723 }
4724
4725 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4726 * 10: add X-Original-To if either the frontend or the backend
4727 * asks for it.
4728 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4729 if ((sess->fe->options | s->be->options) & PR_O_ORGTO) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4730
4731 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4732 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4733 /* Add an X-Original-To header unless the destination IP is
4734 * in the 'except' network range.
4735 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4736 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4737
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4738 if (cli_conn->addr.to.ss_family == AF_INET &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4739 ((!sess->fe->except_mask_to.s_addr ||
4740 (((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr.s_addr & sess->fe->except_mask_to.s_addr)
4741 != sess->fe->except_to.s_addr) &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4742 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4743 (((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]4744 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4745 int len;
4746 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4747 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4748
4749 /* Note: we rely on the backend to get the header name to be used for
4750 * x-original-to, because the header is really meant for the backends.
4751 * However, if the backend did not specify any option, we have to rely
4752 * on the frontend's header name.
4753 */
4754 if (s->be->orgto_hdr_len) {
4755 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4756 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4757 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4758 len = sess->fe->orgto_hdr_len;
4759 memcpy(trash.str, sess->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4760 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4761 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]4762
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4763 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]4764 goto return_bad_req;
4765 }
4766 }
4767 }
4768
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4769 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
4770 * If an "Upgrade" token is found, the header is left untouched in order not to have
4771 * to deal with some servers bugs : some of them fail an Upgrade if anything but
4772 * "Upgrade" is present in the Connection header.
4773 */
4774 if (!(txn->flags & TX_HDR_CONN_UPG) &&
4775 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4776 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4777 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4778 unsigned int want_flags = 0;
4779
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4780 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4781 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4782 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4783 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4784 !((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4785 want_flags |= TX_CON_CLO_SET;
4786 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4787 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4788 ((sess->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4789 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4790 ((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4791 want_flags |= TX_CON_KAL_SET;
4792 }
4793
4794 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4795 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4796 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4797
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4798
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4799 /* If we have no server assigned yet and we're balancing on url_param
4800 * with a POST request, we may be interested in checking the body for
4801 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4802 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4803 if (!(s->flags & (SF_ASSIGNED|SF_DIRECT)) &&
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4804 s->txn->meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4805 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4806 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4807 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4808 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4809
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4810 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4811 req->analysers &= ~AN_REQ_FLT_XFER_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4812 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4813#ifdef TCP_QUICKACK
4814 /* We expect some data from the client. Unless we know for sure
4815 * we already have a full request, we have to re-enable quick-ack
4816 * in case we previously disabled it, otherwise we might cause
4817 * the client to delay further data.
4818 */
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4819 if ((sess->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]4820 cli_conn && conn_ctrl_ready(cli_conn) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4821 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4822 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4823 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4824#endif
4825 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4826
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4827 /*************************************************************
4828 * OK, that's finished for the headers. We have done what we *
4829 * could. Let's switch to the DATA state. *
4830 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4831 req->analyse_exp = TICK_ETERNITY;
4832 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4833
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4834 /* if the server closes the connection, we want to immediately react
4835 * and close the socket to save packets and syscalls.
4836 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4837 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4838 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4839
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4840 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4841 /* OK let's go on with the BODY now */
4842 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4843
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4844 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4845 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4846 /* we detected a parsing error. We want to archive this request
4847 * in the dedicated proxy area for later troubleshooting.
4848 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]4849 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]4850 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4851
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]4852 txn->req.err_state = txn->req.msg_state;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4853 txn->req.msg_state = HTTP_MSG_ERROR;
4854 txn->status = 400;
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4855 req->analysers &= AN_REQ_FLT_END;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4856 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4857
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4858 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4859 if (sess->listener->counters)
4860 sess->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4861
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4862 if (!(s->flags & SF_ERR_MASK))
4863 s->flags |= SF_ERR_PRXCOND;
4864 if (!(s->flags & SF_FINST_MASK))
4865 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4866 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4867}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4868
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4869/* This function is an analyser which processes the HTTP tarpit. It always
4870 * returns zero, at the beginning because it prevents any other processing
4871 * from occurring, and at the end because it terminates the request.
4872 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4873int http_process_tarpit(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4874{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4875 struct http_txn *txn = s->txn;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4876
4877 /* This connection is being tarpitted. The CLIENT side has
4878 * already set the connect expiration date to the right
4879 * timeout. We just have to check that the client is still
4880 * there and that the timeout has not expired.
4881 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4882 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4883 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4884 !tick_is_expired(req->analyse_exp, now_ms))
4885 return 0;
4886
4887 /* We will set the queue timer to the time spent, just for
4888 * logging purposes. We fake a 500 server error, so that the
4889 * attacker will not suspect his connection has been tarpitted.
4890 * It will not cause trouble to the logs because we can exclude
4891 * the tarpitted connections by filtering on the 'PT' status flags.
4892 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4893 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4894
4895 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4896 if (!(req->flags & CF_READ_ERROR))
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4897 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4898
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4899 req->analysers &= AN_REQ_FLT_END;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4900 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4901
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4902 if (!(s->flags & SF_ERR_MASK))
4903 s->flags |= SF_ERR_PRXCOND;
4904 if (!(s->flags & SF_FINST_MASK))
4905 s->flags |= SF_FINST_T;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4906 return 0;
4907}
4908
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4909/* This function is an analyser which waits for the HTTP request body. It waits
4910 * for either the buffer to be full, or the full advertised contents to have
4911 * reached the buffer. It must only be called after the standard HTTP request
4912 * processing has occurred, because it expects the request to be parsed and will
4913 * look for the Expect header. It may send a 100-Continue interim response. It
4914 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
4915 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
4916 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4917 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4918int http_wait_for_request_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4919{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4920 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4921 struct http_txn *txn = s->txn;
4922 struct http_msg *msg = &s->txn->req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4923
4924 /* We have to parse the HTTP request body to find any required data.
4925 * "balance url_param check_post" should have been the only way to get
4926 * into this. We were brought here after HTTP header analysis, so all
4927 * related structures are ready.
4928 */
4929
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4930 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
4931 /* This is the first call */
4932 if (msg->msg_state < HTTP_MSG_BODY)
4933 goto missing_data;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4934
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4935 if (msg->msg_state < HTTP_MSG_100_SENT) {
4936 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4937 * send an HTTP/1.1 100 Continue intermediate response.
4938 */
4939 if (msg->flags & HTTP_MSGF_VER_11) {
4940 struct hdr_ctx ctx;
4941 ctx.idx = 0;
4942 /* Expect is allowed in 1.1, look for it */
4943 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
4944 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4945 bo_inject(&s->res, http_100_chunk.str, http_100_chunk.len);
Thierry FOURNIER / OZON.IO43ad11d2016-12-12 15:19:58 +0100[diff] [blame]4946 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4947 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4948 }
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4949 msg->msg_state = HTTP_MSG_100_SENT;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4950 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4951
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4952 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4953 * req->buf->p still points to the beginning of the message. We
4954 * must save the body in msg->next because it survives buffer
4955 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4956 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4957 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4958
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4959 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4960 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4961 else
4962 msg->msg_state = HTTP_MSG_DATA;
4963 }
4964
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4965 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
4966 /* We're in content-length mode, we just have to wait for enough data. */
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4967 if (http_body_bytes(msg) < msg->body_len)
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4968 goto missing_data;
4969
4970 /* OK we have everything we need now */
4971 goto http_end;
4972 }
4973
4974 /* OK here we're parsing a chunked-encoded message */
4975
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4976 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4977 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4978 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4979 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4980 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4981 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4982
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4983 if (!ret)
4984 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4985 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4986 stream_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4987 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4988 }
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]4989 msg->next += ret;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4990 msg->msg_state = msg->chunk_len ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4991 }
4992
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4993 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4994 * We have the first data byte is in msg->sov + msg->sol. We're waiting
4995 * for at least a whole chunk or the whole content length bytes after
4996 * msg->sov + msg->sol.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4997 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4998 if (msg->msg_state == HTTP_MSG_TRAILERS)
4999 goto http_end;
5000
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]5001 if (http_body_bytes(msg) >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5002 goto http_end;
5003
5004 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]5005 /* we get here if we need to wait for more data. If the buffer is full,
5006 * we have the maximum we can expect.
5007 */
5008 if (buffer_full(req->buf, global.tune.maxrewrite))
5009 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]5010
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5011 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5012 txn->status = 408;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5013 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5014
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5015 if (!(s->flags & SF_ERR_MASK))
5016 s->flags |= SF_ERR_CLITO;
5017 if (!(s->flags & SF_FINST_MASK))
5018 s->flags |= SF_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5019 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]5020 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5021
5022 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]5023 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]5024 /* Not enough data. We'll re-use the http-request
5025 * timeout here. Ideally, we should set the timeout
5026 * relative to the accept() date. We just set the
5027 * request timeout once at the beginning of the
5028 * request.
5029 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5030 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]5031 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]5032 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]5033 return 0;
5034 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5035
5036 http_end:
5037 /* The situation will not evolve, so let's give up on the analysis. */
5038 s->logs.tv_request = now; /* update the request timer to reflect full request */
5039 req->analysers &= ~an_bit;
5040 req->analyse_exp = TICK_ETERNITY;
5041 return 1;
5042
5043 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5044 txn->req.err_state = txn->req.msg_state;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5045 txn->req.msg_state = HTTP_MSG_ERROR;
5046 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5047 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5048
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5049 if (!(s->flags & SF_ERR_MASK))
5050 s->flags |= SF_ERR_PRXCOND;
5051 if (!(s->flags & SF_FINST_MASK))
5052 s->flags |= SF_FINST_R;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5053
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5054 return_err_msg:
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5055 req->analysers &= AN_REQ_FLT_END;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5056 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5057 if (sess->listener->counters)
5058 sess->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5059 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]5060}
5061
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5062/* send a server's name with an outgoing request over an established connection.
5063 * Note: this function is designed to be called once the request has been scheduled
5064 * for being forwarded. This is the reason why it rewinds the buffer before
5065 * proceeding.
5066 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]5067int 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]5068
5069 struct hdr_ctx ctx;
5070
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5071 char *hdr_name = be->server_id_hdr_name;
5072 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]5073 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5074 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5075 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5076
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]5077 ctx.idx = 0;
5078
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]5079 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5080 if (old_o) {
5081 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5082 b_rew(chn->buf, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]5083 txn->req.next += old_o;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5084 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5085 }
5086
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5087 old_i = chn->buf->i;
5088 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]5089 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5090 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5091 }
5092
5093 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5094 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5095 memcpy(hdr_val, hdr_name, hdr_name_len);
5096 hdr_val += hdr_name_len;
5097 *hdr_val++ = ':';
5098 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5099 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
5100 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]5101
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5102 if (old_o) {
5103 /* If this was a forwarded request, we must readjust the amount of
5104 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]5105 * variations. Note that the current state is >= HTTP_MSG_BODY,
5106 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5107 */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]5108 old_o += chn->buf->i - old_i;
5109 b_adv(chn->buf, old_o);
5110 txn->req.next -= old_o;
5111 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5112 }
5113
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5114 return 0;
5115}
5116
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5117/* Terminate current transaction and prepare a new one. This is very tricky
5118 * right now but it works.
5119 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5120void http_end_txn_clean_session(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5121{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5122 int prev_status = s->txn->status;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]5123 struct proxy *fe = strm_fe(s);
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]5124 struct proxy *be = s->be;
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5125 struct connection *srv_conn;
5126 struct server *srv;
Willy Tarreau449d74a2015-08-05 17:16:33 +0200[diff] [blame]5127 unsigned int prev_flags = s->txn->flags;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5128
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5129 /* FIXME: We need a more portable way of releasing a backend's and a
5130 * server's connections. We need a safer way to reinitialize buffer
5131 * flags. We also need a more accurate method for computing per-request
5132 * data.
5133 */
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5134 srv_conn = objt_conn(s->si[1].end);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5135
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5136 /* unless we're doing keep-alive, we want to quickly close the connection
5137 * to the server.
5138 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5139 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5140 !si_conn_ready(&s->si[1])) {
5141 s->si[1].flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
5142 si_shutr(&s->si[1]);
5143 si_shutw(&s->si[1]);
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5144 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5145
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5146 if (s->flags & SF_BE_ASSIGNED) {
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]5147 be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]5148 if (unlikely(s->srv_conn))
5149 sess_change_server(s, NULL);
5150 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5151
5152 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5153 stream_process_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5154
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5155 if (s->txn->status) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5156 int n;
5157
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5158 n = s->txn->status / 100;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5159 if (n < 1 || n > 5)
5160 n = 0;
5161
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5162 if (fe->mode == PR_MODE_HTTP) {
5163 fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5164 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5165 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]5166 (be->mode == PR_MODE_HTTP)) {
5167 be->be_counters.p.http.rsp[n]++;
5168 be->be_counters.p.http.cum_req++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5169 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5170 }
5171
5172 /* don't count other requests' data */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5173 s->logs.bytes_in -= s->req.buf->i;
5174 s->logs.bytes_out -= s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5175
5176 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5177 if (!LIST_ISEMPTY(&fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5178 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5179 (!(fe->options & PR_O_NULLNOLOG) || s->req.total)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5180 s->do_log(s);
5181 }
5182
Willy Tarreaud713bcc2014-06-25 15:36:04 +0200[diff] [blame]5183 /* stop tracking content-based counters */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5184 stream_stop_content_counters(s);
5185 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +0200[diff] [blame]5186
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5187 s->logs.accept_date = date; /* user-visible date for logging */
5188 s->logs.tv_accept = now; /* corrected date for internal use */
Thierry FOURNIER / OZON.IO4cac3592016-07-28 17:19:45 +0200[diff] [blame]5189 s->logs.t_handshake = 0; /* There are no handshake in keep alive connection. */
5190 s->logs.t_idle = -1;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5191 tv_zero(&s->logs.tv_request);
5192 s->logs.t_queue = -1;
5193 s->logs.t_connect = -1;
5194 s->logs.t_data = -1;
5195 s->logs.t_close = 0;
5196 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
5197 s->logs.srv_queue_size = 0; /* we will get this number soon */
5198
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5199 s->logs.bytes_in = s->req.total = s->req.buf->i;
5200 s->logs.bytes_out = s->res.total = s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5201
5202 if (s->pend_pos)
5203 pendconn_free(s->pend_pos);
5204
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5205 if (objt_server(s->target)) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5206 if (s->flags & SF_CURR_SESS) {
5207 s->flags &= ~SF_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5208 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5209 }
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]5210 if (may_dequeue_tasks(objt_server(s->target), be))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5211 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5212 }
5213
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5214 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5215
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5216 /* only release our endpoint if we don't intend to reuse the
5217 * connection.
5218 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5219 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5220 !si_conn_ready(&s->si[1])) {
5221 si_release_endpoint(&s->si[1]);
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5222 srv_conn = NULL;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5223 }
5224
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5225 s->si[1].state = s->si[1].prev_state = SI_ST_INI;
5226 s->si[1].err_type = SI_ET_NONE;
5227 s->si[1].conn_retries = 0; /* used for logging too */
5228 s->si[1].exp = TICK_ETERNITY;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5229 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]5230 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);
5231 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]5232 s->flags &= ~(SF_DIRECT|SF_ASSIGNED|SF_ADDR_SET|SF_BE_ASSIGNED|SF_FORCE_PRST|SF_IGNORE_PRST);
5233 s->flags &= ~(SF_CURR_SESS|SF_REDIRECTABLE|SF_SRV_REUSED);
5234 s->flags &= ~(SF_ERR_MASK|SF_FINST_MASK|SF_REDISP);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]5235
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5236 s->txn->meth = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5237 http_reset_txn(s);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5238 s->txn->flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5239
5240 if (prev_status == 401 || prev_status == 407) {
5241 /* In HTTP keep-alive mode, if we receive a 401, we still have
5242 * a chance of being able to send the visitor again to the same
5243 * server over the same connection. This is required by some
5244 * broken protocols such as NTLM, and anyway whenever there is
5245 * an opportunity for sending the challenge to the proper place,
5246 * it's better to do it (at least it helps with debugging).
5247 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5248 s->txn->flags |= TX_PREFER_LAST;
Willy Tarreaubd99d582015-09-02 10:40:43 +0200[diff] [blame]5249 if (srv_conn)
5250 srv_conn->flags |= CO_FL_PRIVATE;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5251 }
5252
Willy Tarreau53f96852016-02-02 18:50:47 +0100[diff] [blame]5253 /* Never ever allow to reuse a connection from a non-reuse backend */
5254 if (srv_conn && (be->options & PR_O_REUSE_MASK) == PR_O_REUSE_NEVR)
5255 srv_conn->flags |= CO_FL_PRIVATE;
5256
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5257 if (fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5258 s->si[1].flags |= SI_FL_INDEP_STR;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5259
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5260 if (fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5261 s->req.flags |= CF_NEVER_WAIT;
5262 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]5263 }
5264
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5265 /* if the request buffer is not empty, it means we're
5266 * about to process another request, so send pending
5267 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5268 * Just don't do this if the buffer is close to be full,
5269 * because the request will wait for it to flush a little
5270 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5271 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5272 if (s->req.buf->i) {
5273 if (s->res.buf->o &&
5274 !buffer_full(s->res.buf, global.tune.maxrewrite) &&
5275 bi_end(s->res.buf) <= s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)
5276 s->res.flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5277 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5278
Willy Tarreau714ea782015-11-25 20:11:11 +0100[diff] [blame]5279 /* we're removing the analysers, we MUST re-enable events detection.
5280 * We don't enable close on the response channel since it's either
5281 * already closed, or in keep-alive with an idle connection handler.
5282 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5283 channel_auto_read(&s->req);
5284 channel_auto_close(&s->req);
5285 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5286
Willy Tarreau1c59bd52015-11-02 20:20:11 +0100[diff] [blame]5287 /* we're in keep-alive with an idle connection, monitor it if not already done */
5288 if (srv_conn && LIST_ISEMPTY(&srv_conn->list)) {
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5289 srv = objt_server(srv_conn->target);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5290 if (!srv)
5291 si_idle_conn(&s->si[1], NULL);
Willy Tarreau53f96852016-02-02 18:50:47 +0100[diff] [blame]5292 else if (srv_conn->flags & CO_FL_PRIVATE)
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5293 si_idle_conn(&s->si[1], &srv->priv_conns);
Willy Tarreau449d74a2015-08-05 17:16:33 +0200[diff] [blame]5294 else if (prev_flags & TX_NOT_FIRST)
5295 /* note: we check the request, not the connection, but
5296 * this is valid for strategies SAFE and AGGR, and in
5297 * case of ALWS, we don't care anyway.
5298 */
5299 si_idle_conn(&s->si[1], &srv->safe_conns);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5300 else
5301 si_idle_conn(&s->si[1], &srv->idle_conns);
Willy Tarreau4320eaa2015-08-05 11:08:30 +0200[diff] [blame]5302 }
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]5303
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5304 if (HAS_FILTERS(s)) {
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5305 s->req.analysers &= AN_REQ_FLT_END;
5306 s->res.analysers &= AN_RES_FLT_END;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5307 }
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5308 else {
5309 s->req.analysers = strm_li(s) ? strm_li(s)->analysers : 0;
5310 s->res.analysers = 0;
5311 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5312}
5313
5314
5315/* This function updates the request state machine according to the response
5316 * state machine and buffer flags. It returns 1 if it changes anything (flag
5317 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5318 * it is only used to find when a request/response couple is complete. Both
5319 * this function and its equivalent should loop until both return zero. It
5320 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5321 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5322int http_sync_req_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5323{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5324 struct channel *chn = &s->req;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5325 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5326 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5327 unsigned int old_state = txn->req.msg_state;
5328
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5329 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
5330 return 0;
5331
5332 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5333 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5334 * We can shut the read side unless we want to abort_on_close,
5335 * or we have a POST request. The issue with POST requests is
5336 * that some browsers still send a CRLF after the request, and
5337 * this CRLF must be read so that it does not remain in the kernel
5338 * buffers, otherwise a close could cause an RST on some systems
5339 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5340 * Note that if we're using keep-alive on the client side, we'd
5341 * rather poll now and keep the polling enabled for the whole
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5342 * stream's life than enabling/disabling it between each
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5343 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5344 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5345 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5346 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5347 !(s->be->options & PR_O_ABRT_CLOSE) &&
5348 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5349 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5350
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5351 /* if the server closes the connection, we want to immediately react
5352 * and close the socket to save packets and syscalls.
5353 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5354 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5355
Willy Tarreau7f876a12015-11-18 11:59:55 +0100[diff] [blame]5356 /* In any case we've finished parsing the request so we must
5357 * disable Nagle when sending data because 1) we're not going
5358 * to shut this side, and 2) the server is waiting for us to
5359 * send pending data.
5360 */
5361 chn->flags |= CF_NEVER_WAIT;
5362
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5363 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
5364 goto wait_other_side;
5365
5366 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
5367 /* The server has not finished to respond, so we
5368 * don't want to move in order not to upset it.
5369 */
5370 goto wait_other_side;
5371 }
5372
5373 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
5374 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5375 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5376 txn->req.msg_state = HTTP_MSG_TUNNEL;
5377 goto wait_other_side;
5378 }
5379
5380 /* When we get here, it means that both the request and the
5381 * response have finished receiving. Depending on the connection
5382 * mode, we'll have to wait for the last bytes to leave in either
5383 * direction, and sometimes for a close to be effective.
5384 */
5385
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5386 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5387 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5388 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
5389 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5390 }
5391 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5392 /* Option forceclose is set, or either side wants to close,
5393 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5394 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5395 * once both states are CLOSED.
5396 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5397 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5398 channel_shutr_now(chn);
5399 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5400 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5401 }
5402 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5403 /* The last possible modes are keep-alive and tunnel. Tunnel mode
5404 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5405 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5406 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
5407 channel_auto_read(chn);
5408 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5409 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5410 }
5411
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5412 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5413 /* if we've just closed an output, let's switch */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5414 s->si[1].flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5415
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5416 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5417 txn->req.msg_state = HTTP_MSG_CLOSING;
5418 goto http_msg_closing;
5419 }
5420 else {
5421 txn->req.msg_state = HTTP_MSG_CLOSED;
5422 goto http_msg_closed;
5423 }
5424 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5425 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5426 }
5427
5428 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
5429 http_msg_closing:
5430 /* nothing else to forward, just waiting for the output buffer
5431 * to be empty and for the shutw_now to take effect.
5432 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5433 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5434 txn->req.msg_state = HTTP_MSG_CLOSED;
5435 goto http_msg_closed;
5436 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5437 else if (chn->flags & CF_SHUTW) {
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5438 txn->req.err_state = txn->req.msg_state;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5439 txn->req.msg_state = HTTP_MSG_ERROR;
5440 goto wait_other_side;
5441 }
5442 }
5443
5444 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
5445 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5446 /* see above in MSG_DONE why we only do this in these states */
5447 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5448 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5449 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]5450 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5451 goto wait_other_side;
5452 }
5453
5454 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5455 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5456}
5457
5458
5459/* This function updates the response state machine according to the request
5460 * state machine and buffer flags. It returns 1 if it changes anything (flag
5461 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5462 * it is only used to find when a request/response couple is complete. Both
5463 * this function and its equivalent should loop until both return zero. It
5464 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5465 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5466int http_sync_res_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5467{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5468 struct channel *chn = &s->res;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5469 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5470 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5471 unsigned int old_state = txn->rsp.msg_state;
5472
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5473 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
5474 return 0;
5475
5476 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
5477 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5478 * still monitor the server connection for a possible close
5479 * while the request is being uploaded, so we don't disable
5480 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5481 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5482 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5483
5484 if (txn->req.msg_state == HTTP_MSG_ERROR)
5485 goto wait_other_side;
5486
5487 if (txn->req.msg_state < HTTP_MSG_DONE) {
5488 /* The client seems to still be sending data, probably
5489 * because we got an error response during an upload.
5490 * We have the choice of either breaking the connection
5491 * or letting it pass through. Let's do the later.
5492 */
5493 goto wait_other_side;
5494 }
5495
5496 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
5497 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5498 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5499 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5500 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5501 goto wait_other_side;
5502 }
5503
5504 /* When we get here, it means that both the request and the
5505 * response have finished receiving. Depending on the connection
5506 * mode, we'll have to wait for the last bytes to leave in either
5507 * direction, and sometimes for a close to be effective.
5508 */
5509
5510 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5511 /* Server-close mode : shut read and wait for the request
5512 * side to close its output buffer. The caller will detect
5513 * when we're in DONE and the other is in CLOSED and will
5514 * catch that for the final cleanup.
5515 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5516 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
5517 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5518 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5519 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5520 /* Option forceclose is set, or either side wants to close,
5521 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5522 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5523 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5524 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5525 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5526 channel_shutr_now(chn);
5527 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5528 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5529 }
5530 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5531 /* The last possible modes are keep-alive and tunnel. Tunnel will
5532 * need to forward remaining data. Keep-alive will need to monitor
5533 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5534 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5535 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5536 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5537 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
5538 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5539 }
5540
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5541 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5542 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5543 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5544 txn->rsp.msg_state = HTTP_MSG_CLOSING;
5545 goto http_msg_closing;
5546 }
5547 else {
5548 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5549 goto http_msg_closed;
5550 }
5551 }
5552 goto wait_other_side;
5553 }
5554
5555 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
5556 http_msg_closing:
5557 /* nothing else to forward, just waiting for the output buffer
5558 * to be empty and for the shutw_now to take effect.
5559 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5560 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5561 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5562 goto http_msg_closed;
5563 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5564 else if (chn->flags & CF_SHUTW) {
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5565 txn->req.err_state = txn->req.msg_state;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5566 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5567 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5568 if (objt_server(s->target))
5569 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5570 goto wait_other_side;
5571 }
5572 }
5573
5574 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
5575 http_msg_closed:
5576 /* drop any pending data */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5577 channel_truncate(chn);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5578 channel_auto_close(chn);
5579 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5580 goto wait_other_side;
5581 }
5582
5583 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5584 /* We force the response to leave immediately if we're waiting for the
5585 * other side, since there is no pending shutdown to push it out.
5586 */
5587 if (!channel_is_empty(chn))
5588 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5589 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5590}
5591
5592
5593/* Resync the request and response state machines. Return 1 if either state
5594 * changes.
5595 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5596int http_resync_states(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5597{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5598 struct http_txn *txn = s->txn;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5599 int old_req_state = txn->req.msg_state;
5600 int old_res_state = txn->rsp.msg_state;
5601
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5602 http_sync_req_state(s);
5603 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5604 if (!http_sync_res_state(s))
5605 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5606 if (!http_sync_req_state(s))
5607 break;
5608 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]5609
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5610 /* OK, both state machines agree on a compatible state.
5611 * There are a few cases we're interested in :
5612 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
5613 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
5614 * directions, so let's simply disable both analysers.
5615 * - HTTP_MSG_CLOSED on the response only means we must abort the
5616 * request.
5617 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
5618 * with server-close mode means we've completed one request and we
5619 * must re-initialize the server connection.
5620 */
5621
5622 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
5623 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
5624 (txn->req.msg_state == HTTP_MSG_CLOSED &&
5625 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5626 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5627 channel_auto_close(&s->req);
5628 channel_auto_read(&s->req);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5629 s->res.analysers &= AN_RES_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5630 channel_auto_close(&s->res);
5631 channel_auto_read(&s->res);
Christopher Faulet6962f4e2016-11-28 14:21:27 +0100[diff] [blame]5632 if (txn->req.msg_state == HTTP_MSG_TUNNEL && HAS_REQ_DATA_FILTERS(s))
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5633 s->req.analysers |= AN_REQ_FLT_XFER_DATA;
Christopher Faulet6962f4e2016-11-28 14:21:27 +0100[diff] [blame]5634 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL && HAS_RSP_DATA_FILTERS(s))
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5635 s->res.analysers |= AN_RES_FLT_XFER_DATA;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5636 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5637 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5638 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->res.flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]5639 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5640 txn->req.msg_state == HTTP_MSG_ERROR) {
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5641 s->res.analysers &= AN_RES_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5642 channel_auto_close(&s->res);
5643 channel_auto_read(&s->res);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5644 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5645 channel_abort(&s->req);
5646 channel_auto_close(&s->req);
5647 channel_auto_read(&s->req);
5648 channel_truncate(&s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5649 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5650 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
5651 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5652 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5653 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
5654 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
5655 /* server-close/keep-alive: terminate this transaction,
5656 * possibly killing the server connection and reinitialize
Willy Tarreau3de5bd62016-05-02 16:07:07 +0200[diff] [blame]5657 * a fresh-new transaction, but only once we're sure there's
5658 * enough room in the request and response buffer to process
5659 * another request. The request buffer must not hold any
5660 * pending output data and the request buffer must not have
5661 * output data occupying the reserve.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5662 */
Willy Tarreau3de5bd62016-05-02 16:07:07 +0200[diff] [blame]5663 if (s->req.buf->o)
5664 s->req.flags |= CF_WAKE_WRITE;
5665 else if (channel_congested(&s->res))
5666 s->res.flags |= CF_WAKE_WRITE;
5667 else
5668 http_end_txn_clean_session(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5669 }
5670
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5671 return txn->req.msg_state != old_req_state ||
5672 txn->rsp.msg_state != old_res_state;
5673}
5674
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5675/* This function is an analyser which forwards request body (including chunk
5676 * sizes if any). It is called as soon as we must forward, even if we forward
5677 * zero byte. The only situation where it must not be called is when we're in
5678 * tunnel mode and we want to forward till the close. It's used both to forward
5679 * remaining data and to resync after end of body. It expects the msg_state to
5680 * 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]5681 * 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]5682 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5683 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5684 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5685int http_request_forward_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5686{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5687 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5688 struct http_txn *txn = s->txn;
5689 struct http_msg *msg = &s->txn->req;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5690 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5691
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5692 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5693 return 0;
5694
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5695 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]5696 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5697 /* Output closed while we were sending data. We must abort and
5698 * wake the other side up.
5699 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5700 msg->err_state = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5701 msg->msg_state = HTTP_MSG_ERROR;
5702 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5703 return 1;
5704 }
5705
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5706 /* Note that we don't have to send 100-continue back because we don't
5707 * need the data to complete our job, and it's up to the server to
5708 * decide whether to return 100, 417 or anything else in return of
5709 * an "Expect: 100-continue" header.
5710 */
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5711 if (msg->msg_state == HTTP_MSG_BODY) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5712 msg->msg_state = ((msg->flags & HTTP_MSGF_TE_CHNK)
5713 ? HTTP_MSG_CHUNK_SIZE
5714 : HTTP_MSG_DATA);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5715
5716 /* TODO/filters: when http-buffer-request option is set or if a
5717 * rule on url_param exists, the first chunk size could be
5718 * already parsed. In that case, msg->next is after the chunk
5719 * size (including the CRLF after the size). So this case should
5720 * be handled to */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5721 }
5722
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5723 /* Some post-connect processing might want us to refrain from starting to
5724 * forward data. Currently, the only reason for this is "balance url_param"
5725 * whichs need to parse/process the request after we've enabled forwarding.
5726 */
5727 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5728 if (!(s->res.flags & CF_READ_ATTACHED)) {
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5729 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +0200[diff] [blame]5730 req->flags |= CF_WAKE_CONNECT;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5731 goto missing_data_or_waiting;
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5732 }
5733 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5734 }
5735
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5736 /* in most states, we should abort in case of early close */
5737 channel_auto_close(req);
5738
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5739 if (req->to_forward) {
5740 /* We can't process the buffer's contents yet */
5741 req->flags |= CF_WAKE_WRITE;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5742 goto missing_data_or_waiting;
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5743 }
5744
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5745 if (msg->msg_state < HTTP_MSG_DONE) {
5746 ret = ((msg->flags & HTTP_MSGF_TE_CHNK)
5747 ? http_msg_forward_chunked_body(s, msg)
5748 : http_msg_forward_body(s, msg));
5749 if (!ret)
5750 goto missing_data_or_waiting;
5751 if (ret < 0)
5752 goto return_bad_req;
5753 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5754
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5755 /* other states, DONE...TUNNEL */
5756 /* we don't want to forward closes on DONE except in tunnel mode. */
5757 if ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5758 channel_dont_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5759
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5760 if (http_resync_states(s)) {
5761 /* some state changes occurred, maybe the analyser
5762 * was disabled too. */
5763 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5764 if (req->flags & CF_SHUTW) {
5765 /* request errors are most likely due to the
5766 * server aborting the transfer. */
5767 goto aborted_xfer;
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5768 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5769 if (msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5770 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]5771 goto return_bad_req;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5772 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5773 return 1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5774 }
5775
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5776 /* If "option abortonclose" is set on the backend, we want to monitor
5777 * the client's connection and forward any shutdown notification to the
5778 * server, which will decide whether to close or to go on processing the
5779 * request. We only do that in tunnel mode, and not in other modes since
5780 * it can be abused to exhaust source ports. */
5781 if (s->be->options & PR_O_ABRT_CLOSE) {
5782 channel_auto_read(req);
5783 if ((req->flags & (CF_SHUTR|CF_READ_NULL)) &&
5784 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN))
5785 s->si[1].flags |= SI_FL_NOLINGER;
5786 channel_auto_close(req);
5787 }
5788 else if (s->txn->meth == HTTP_METH_POST) {
5789 /* POST requests may require to read extra CRLF sent by broken
5790 * browsers and which could cause an RST to be sent upon close
5791 * on some systems (eg: Linux). */
5792 channel_auto_read(req);
5793 }
5794 return 0;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5795
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5796 missing_data_or_waiting:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5797 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5798 if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5799 if (!(s->flags & SF_ERR_MASK))
5800 s->flags |= SF_ERR_CLICL;
5801 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5802 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5803 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5804 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5805 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5806 }
5807
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5808 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5809 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5810 if (objt_server(s->target))
5811 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5812
5813 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5814 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5815
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5816 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5817 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5818 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5819
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5820 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5821 * 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]5822 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5823 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5824 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5825
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5826 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5827 * 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]5828 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5829 * modes are already handled by the stream sock layer. We must not do
5830 * this in content-length mode because it could present the MSG_MORE
5831 * flag with the last block of forwarded data, which would cause an
5832 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5833 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5834 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5835 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5836
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5837 return 0;
5838
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5839 return_bad_req: /* let's centralize all bad requests */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5840 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5841 if (sess->listener->counters)
5842 sess->listener->counters->failed_req++;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5843
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5844 return_bad_req_stats_ok:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5845 txn->req.err_state = txn->req.msg_state;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5846 txn->req.msg_state = HTTP_MSG_ERROR;
5847 if (txn->status) {
5848 /* Note: we don't send any error if some data were already sent */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5849 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5850 } else {
5851 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5852 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5853 }
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5854 req->analysers &= AN_REQ_FLT_END;
5855 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]5856
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5857 if (!(s->flags & SF_ERR_MASK))
5858 s->flags |= SF_ERR_PRXCOND;
5859 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5860 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5861 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5862 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5863 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5864 }
5865 return 0;
5866
5867 aborted_xfer:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5868 txn->req.err_state = txn->req.msg_state;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5869 txn->req.msg_state = HTTP_MSG_ERROR;
5870 if (txn->status) {
5871 /* Note: we don't send any error if some data were already sent */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5872 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5873 } else {
5874 txn->status = 502;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5875 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5876 }
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5877 req->analysers &= AN_REQ_FLT_END;
5878 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]5879
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5880 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5881 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5882 if (objt_server(s->target))
5883 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5884
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5885 if (!(s->flags & SF_ERR_MASK))
5886 s->flags |= SF_ERR_SRVCL;
5887 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5888 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5889 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5890 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5891 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5892 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5893 return 0;
5894}
5895
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5896/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5897 * processing can continue on next analysers, or zero if it either needs more
5898 * data or wants to immediately abort the response (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5899 * 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]5900 * when it has nothing left to do, and may remove any analyser when it wants to
5901 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5902 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5903int http_wait_for_response(struct stream *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5904{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5905 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5906 struct http_txn *txn = s->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5907 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5908 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5909 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5910 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5911 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5912
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5913 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]5914 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5915 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5916 rep,
5917 rep->rex, rep->wex,
5918 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5919 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5920 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5921
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5922 /*
5923 * Now parse the partial (or complete) lines.
5924 * We will check the response syntax, and also join multi-line
5925 * headers. An index of all the lines will be elaborated while
5926 * parsing.
5927 *
5928 * For the parsing, we use a 28 states FSM.
5929 *
5930 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5931 * rep->buf->p = beginning of response
5932 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5933 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5934 * msg->eol = end of current header or line (LF or CRLF)
5935 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5936 */
5937
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5938 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5939 /* There's a protected area at the end of the buffer for rewriting
5940 * purposes. We don't want to start to parse the request if the
5941 * protected area is affected, because we may have to move processed
5942 * data later, which is much more complicated.
5943 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5944 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]5945 if (unlikely(!channel_is_rewritable(rep))) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5946 /* some data has still not left the buffer, wake us once that's done */
5947 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5948 goto abort_response;
5949 channel_dont_close(rep);
5950 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5951 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5952 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5953 }
5954
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5955 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5956 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5957 buffer_slow_realign(rep->buf);
5958
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5959 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5960 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5961 }
5962
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5963 /* 1: we might have to print this header in debug mode */
5964 if (unlikely((global.mode & MODE_DEBUG) &&
5965 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]5966 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5967 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5968
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5969 sol = rep->buf->p;
5970 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5971 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5972
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5973 sol += hdr_idx_first_pos(&txn->hdr_idx);
5974 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5975
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5976 while (cur_idx) {
5977 eol = sol + txn->hdr_idx.v[cur_idx].len;
5978 debug_hdr("srvhdr", s, sol, eol);
5979 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5980 cur_idx = txn->hdr_idx.v[cur_idx].next;
5981 }
5982 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5983
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5984 /*
5985 * Now we quickly check if we have found a full valid response.
5986 * If not so, we check the FD and buffer states before leaving.
5987 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5988 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5989 * responses are checked first.
5990 *
5991 * Depending on whether the client is still there or not, we
5992 * may send an error response back or not. Note that normally
5993 * we should only check for HTTP status there, and check I/O
5994 * errors somewhere else.
5995 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5996
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5997 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5998 /* Invalid response */
5999 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
6000 /* we detected a parsing error. We want to archive this response
6001 * in the dedicated proxy area for later troubleshooting.
6002 */
6003 hdr_response_bad:
6004 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]6005 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]6006
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6007 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6008 if (objt_server(s->target)) {
6009 objt_server(s->target)->counters.failed_resp++;
6010 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6011 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]6012 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6013 channel_auto_close(rep);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6014 rep->analysers &= AN_RES_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6015 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6016 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6017 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6018 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6019
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6020 if (!(s->flags & SF_ERR_MASK))
6021 s->flags |= SF_ERR_PRXCOND;
6022 if (!(s->flags & SF_FINST_MASK))
6023 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6024
6025 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6026 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6027
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6028 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6029 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]6030 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6031 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6032 goto hdr_response_bad;
6033 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6034
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6035 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6036 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6037 if (msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]6038 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]6039 else if (txn->flags & TX_NOT_FIRST)
6040 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]6041
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6042 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6043 if (objt_server(s->target)) {
6044 objt_server(s->target)->counters.failed_resp++;
6045 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6046 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]6047
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6048 channel_auto_close(rep);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6049 rep->analysers &= AN_RES_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6050 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6051 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6052 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6053 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]6054
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6055 if (!(s->flags & SF_ERR_MASK))
6056 s->flags |= SF_ERR_SRVCL;
6057 if (!(s->flags & SF_FINST_MASK))
6058 s->flags |= SF_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]6059 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6060 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6061
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +0200[diff] [blame]6062 /* read timeout : return a 504 to the client. */
6063 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6064 if (msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]6065 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]6066
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6067 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6068 if (objt_server(s->target)) {
6069 objt_server(s->target)->counters.failed_resp++;
6070 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6071 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6072
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6073 channel_auto_close(rep);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6074 rep->analysers &= AN_RES_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6075 txn->status = 504;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6076 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6077 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6078 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]6079
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6080 if (!(s->flags & SF_ERR_MASK))
6081 s->flags |= SF_ERR_SRVTO;
6082 if (!(s->flags & SF_FINST_MASK))
6083 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6084 return 0;
6085 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]6086
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6087 /* client abort with an abortonclose */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6088 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]6089 sess->fe->fe_counters.cli_aborts++;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6090 s->be->be_counters.cli_aborts++;
6091 if (objt_server(s->target))
6092 objt_server(s->target)->counters.cli_aborts++;
6093
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6094 rep->analysers &= AN_RES_FLT_END;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6095 channel_auto_close(rep);
6096
6097 txn->status = 400;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6098 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6099 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6100
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6101 if (!(s->flags & SF_ERR_MASK))
6102 s->flags |= SF_ERR_CLICL;
6103 if (!(s->flags & SF_FINST_MASK))
6104 s->flags |= SF_FINST_H;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6105
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6106 /* process_stream() will take care of the error */
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6107 return 0;
6108 }
6109
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]6110 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6111 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]6112 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]6113 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]6114 else if (txn->flags & TX_NOT_FIRST)
6115 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6116
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6117 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6118 if (objt_server(s->target)) {
6119 objt_server(s->target)->counters.failed_resp++;
6120 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6121 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6122
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6123 channel_auto_close(rep);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6124 rep->analysers &= AN_RES_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6125 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6126 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6127 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6128 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6129
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6130 if (!(s->flags & SF_ERR_MASK))
6131 s->flags |= SF_ERR_SRVCL;
6132 if (!(s->flags & SF_FINST_MASK))
6133 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6134 return 0;
6135 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]6136
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6137 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6138 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6139 if (msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]6140 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]6141 else if (txn->flags & TX_NOT_FIRST)
6142 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]6143
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6144 s->be->be_counters.failed_resp++;
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6145 rep->analysers &= AN_RES_FLT_END;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6146 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6147
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6148 if (!(s->flags & SF_ERR_MASK))
6149 s->flags |= SF_ERR_CLICL;
6150 if (!(s->flags & SF_FINST_MASK))
6151 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6152
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6153 /* process_stream() will take care of the error */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6154 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6155 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6156
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6157 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]6158 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6159 return 0;
6160 }
6161
6162 /* More interesting part now : we know that we have a complete
6163 * response which at least looks like HTTP. We have an indicator
6164 * of each header's length, so we can parse them quickly.
6165 */
6166
6167 if (unlikely(msg->err_pos >= 0))
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]6168 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]6169
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6170 /*
6171 * 1: get the status code
6172 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6173 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6174 if (n < 1 || n > 5)
6175 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6176 /* when the client triggers a 4xx from the server, it's most often due
6177 * to a missing object or permission. These events should be tracked
6178 * because if they happen often, it may indicate a brute force or a
6179 * vulnerability scan.
6180 */
6181 if (n == 4)
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6182 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6183
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6184 if (objt_server(s->target))
6185 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6186
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]6187 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
6188 * exactly one digit "." one digit. This check may be disabled using
6189 * option accept-invalid-http-response.
6190 */
6191 if (!(s->be->options2 & PR_O2_RSPBUG_OK)) {
6192 if (msg->sl.st.v_l != 8) {
6193 msg->err_pos = 0;
6194 goto hdr_response_bad;
6195 }
6196
6197 if (rep->buf->p[4] != '/' ||
6198 !isdigit((unsigned char)rep->buf->p[5]) ||
6199 rep->buf->p[6] != '.' ||
6200 !isdigit((unsigned char)rep->buf->p[7])) {
6201 msg->err_pos = 4;
6202 goto hdr_response_bad;
6203 }
6204 }
6205
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6206 /* check if the response is HTTP/1.1 or above */
6207 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6208 ((rep->buf->p[5] > '1') ||
6209 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6210 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6211
6212 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]6213 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]6214
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6215 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6216 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6217
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6218 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]6219
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]6220 /* Adjust server's health based on status code. Note: status codes 501
6221 * and 505 are triggered on demand by client request, so we must not
6222 * count them as server failures.
6223 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6224 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6225 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6226 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6227 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6228 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6229 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6230
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6231 /*
6232 * 2: check for cacheability.
6233 */
6234
6235 switch (txn->status) {
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]6236 case 100:
6237 /*
6238 * We may be facing a 100-continue response, in which case this
6239 * is not the right response, and we're waiting for the next one.
6240 * Let's allow this response to go to the client and wait for the
6241 * next one.
6242 */
6243 hdr_idx_init(&txn->hdr_idx);
6244 msg->next -= channel_forward(rep, msg->next);
6245 msg->msg_state = HTTP_MSG_RPBEFORE;
6246 txn->status = 0;
6247 s->logs.t_data = -1; /* was not a response yet */
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6248 FLT_STRM_CB(s, flt_http_reset(s, msg));
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]6249 goto next_one;
6250
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6251 case 200:
6252 case 203:
6253 case 206:
6254 case 300:
6255 case 301:
6256 case 410:
6257 /* RFC2616 @13.4:
6258 * "A response received with a status code of
6259 * 200, 203, 206, 300, 301 or 410 MAY be stored
6260 * by a cache (...) unless a cache-control
6261 * directive prohibits caching."
6262 *
6263 * RFC2616 @9.5: POST method :
6264 * "Responses to this method are not cacheable,
6265 * unless the response includes appropriate
6266 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6267 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6268 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6269 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6270 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
6271 break;
6272 default:
6273 break;
6274 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6275
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6276 /*
6277 * 3: we may need to capture headers
6278 */
6279 s->logs.logwait &= ~LW_RESP;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6280 if (unlikely((s->logs.logwait & LW_RSPHDR) && s->res_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6281 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6282 s->res_cap, sess->fe->rsp_cap);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6283
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6284 /* 4: determine the transfer-length according to RFC2616 #4.4, updated
6285 * by RFC7230#3.3.3 :
6286 *
6287 * The length of a message body is determined by one of the following
6288 * (in order of precedence):
6289 *
Christopher Fauletd1cd2092016-11-28 10:14:03 +0100[diff] [blame]6290 * 1. Any 2xx (Successful) response to a CONNECT request implies that
6291 * the connection will become a tunnel immediately after the empty
6292 * line that concludes the header fields. A client MUST ignore
6293 * any Content-Length or Transfer-Encoding header fields received
6294 * in such a message. Any 101 response (Switching Protocols) is
6295 * managed in the same manner.
6296 *
6297 * 2. Any response to a HEAD request and any response with a 1xx
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6298 * (Informational), 204 (No Content), or 304 (Not Modified) status
6299 * code is always terminated by the first empty line after the
6300 * header fields, regardless of the header fields present in the
6301 * message, and thus cannot contain a message body.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6302 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6303 * 3. If a Transfer-Encoding header field is present and the chunked
6304 * transfer coding (Section 4.1) is the final encoding, the message
6305 * body length is determined by reading and decoding the chunked
6306 * data until the transfer coding indicates the data is complete.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6307 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6308 * If a Transfer-Encoding header field is present in a response and
6309 * the chunked transfer coding is not the final encoding, the
6310 * message body length is determined by reading the connection until
6311 * it is closed by the server. If a Transfer-Encoding header field
6312 * is present in a request and the chunked transfer coding is not
6313 * the final encoding, the message body length cannot be determined
6314 * reliably; the server MUST respond with the 400 (Bad Request)
6315 * status code and then close the connection.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6316 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6317 * If a message is received with both a Transfer-Encoding and a
6318 * Content-Length header field, the Transfer-Encoding overrides the
6319 * Content-Length. Such a message might indicate an attempt to
6320 * perform request smuggling (Section 9.5) or response splitting
6321 * (Section 9.4) and ought to be handled as an error. A sender MUST
6322 * remove the received Content-Length field prior to forwarding such
6323 * a message downstream.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6324 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6325 * 4. If a message is received without Transfer-Encoding and with
6326 * either multiple Content-Length header fields having differing
6327 * field-values or a single Content-Length header field having an
6328 * invalid value, then the message framing is invalid and the
6329 * recipient MUST treat it as an unrecoverable error. If this is a
6330 * request message, the server MUST respond with a 400 (Bad Request)
6331 * status code and then close the connection. If this is a response
6332 * message received by a proxy, the proxy MUST close the connection
6333 * to the server, discard the received response, and send a 502 (Bad
6334 * Gateway) response to the client. If this is a response message
6335 * received by a user agent, the user agent MUST close the
6336 * connection to the server and discard the received response.
6337 *
6338 * 5. If a valid Content-Length header field is present without
6339 * Transfer-Encoding, its decimal value defines the expected message
6340 * body length in octets. If the sender closes the connection or
6341 * the recipient times out before the indicated number of octets are
6342 * received, the recipient MUST consider the message to be
6343 * incomplete and close the connection.
6344 *
6345 * 6. If this is a request message and none of the above are true, then
6346 * the message body length is zero (no message body is present).
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6347 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6348 * 7. Otherwise, this is a response message without a declared message
6349 * body length, so the message body length is determined by the
6350 * number of octets received prior to the server closing the
6351 * connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6352 */
6353
6354 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6355 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6356 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6357 * FIXME: should we parse anyway and return an error on chunked encoding ?
6358 */
Christopher Fauletd1cd2092016-11-28 10:14:03 +0100[diff] [blame]6359 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
6360 txn->status == 101)) {
6361 /* Either we've established an explicit tunnel, or we're
6362 * switching the protocol. In both cases, we're very unlikely
6363 * to understand the next protocols. We have to switch to tunnel
6364 * mode, so that we transfer the request and responses then let
6365 * this protocol pass unmodified. When we later implement specific
6366 * parsers for such protocols, we'll want to check the Upgrade
6367 * header which contains information about that protocol for
6368 * responses with status 101 (eg: see RFC2817 about TLS).
6369 */
6370 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
6371 msg->flags |= HTTP_MSGF_XFER_LEN;
6372 goto end;
6373 }
6374
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6375 if (txn->meth == HTTP_METH_HEAD ||
6376 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6377 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6378 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6379 goto skip_content_length;
6380 }
6381
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6382 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6383 ctx.idx = 0;
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]6384 while (http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6385 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6386 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
6387 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6388 /* bad transfer-encoding (chunked followed by something else) */
6389 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6390 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6391 break;
6392 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6393 }
6394
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6395 /* Chunked responses must have their content-length removed */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6396 ctx.idx = 0;
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6397 if (use_close_only || (msg->flags & HTTP_MSGF_TE_CHNK)) {
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6398 while (http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx))
6399 http_remove_header2(msg, &txn->hdr_idx, &ctx);
6400 }
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6401 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]6402 signed long long cl;
6403
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6404 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6405 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6406 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6407 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6408
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6409 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6410 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6411 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6412 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6413
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6414 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6415 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6416 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6417 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6418
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6419 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6420 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6421 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6422 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6423
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6424 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6425 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6426 }
6427
Christopher Fauletd1cd2092016-11-28 10:14:03 +0100[diff] [blame]6428 skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6429 /* Now we have to check if we need to modify the Connection header.
6430 * This is more difficult on the response than it is on the request,
6431 * because we can have two different HTTP versions and we don't know
6432 * how the client will interprete a response. For instance, let's say
6433 * that the client sends a keep-alive request in HTTP/1.0 and gets an
6434 * HTTP/1.1 response without any header. Maybe it will bound itself to
6435 * HTTP/1.0 because it only knows about it, and will consider the lack
6436 * of header as a close, or maybe it knows HTTP/1.1 and can consider
6437 * the lack of header as a keep-alive. Thus we will use two flags
6438 * indicating how a request MAY be understood by the client. In case
6439 * of multiple possibilities, we'll fix the header to be explicit. If
6440 * ambiguous cases such as both close and keepalive are seen, then we
6441 * will fall back to explicit close. Note that we won't take risks with
6442 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6443 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6444 */
Christopher Fauletd1cd2092016-11-28 10:14:03 +0100[diff] [blame]6445 if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
6446 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
6447 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6448 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6449 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6450
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6451 /* this situation happens when combining pretend-keepalive with httpclose. */
6452 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6453 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6454 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6455 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
6456
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6457 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6458 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6459 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
6460 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6461
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6462 /* now adjust header transformations depending on current state */
6463 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
6464 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
6465 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6466 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6467 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6468 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6469 else { /* SCL / KAL */
6470 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6471 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6472 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6473 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6474
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6475 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6476 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6477
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6478 /* Some keep-alive responses are converted to Server-close if
6479 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6480 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6481 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
6482 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6483 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6484 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6485 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6486 }
6487
Christopher Fauletd1cd2092016-11-28 10:14:03 +0100[diff] [blame]6488 end:
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6489 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6490 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6491
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6492 /* end of job, return OK */
6493 rep->analysers &= ~an_bit;
6494 rep->analyse_exp = TICK_ETERNITY;
6495 channel_auto_close(rep);
6496 return 1;
6497
6498 abort_keep_alive:
6499 /* A keep-alive request to the server failed on a network error.
6500 * The client is required to retry. We need to close without returning
6501 * any other information so that the client retries.
6502 */
6503 txn->status = 0;
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6504 rep->analysers &= AN_RES_FLT_END;
6505 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6506 channel_auto_close(rep);
6507 s->logs.logwait = 0;
6508 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6509 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6510 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6511 http_reply_and_close(s, txn->status, NULL);
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6512 return 0;
6513}
6514
6515/* This function performs all the processing enabled for the current response.
6516 * It normally returns 1 unless it wants to break. It relies on buffers flags,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6517 * and updates s->res.analysers. It might make sense to explode it into several
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6518 * other functions. It works like process_request (see indications above).
6519 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6520int 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]6521{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6522 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6523 struct http_txn *txn = s->txn;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6524 struct http_msg *msg = &txn->rsp;
6525 struct proxy *cur_proxy;
6526 struct cond_wordlist *wl;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]6527 enum rule_result ret = HTTP_RULE_RES_CONT;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6528
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6529 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]6530 now_ms, __FUNCTION__,
6531 s,
6532 rep,
6533 rep->rex, rep->wex,
6534 rep->flags,
6535 rep->buf->i,
6536 rep->analysers);
6537
6538 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
6539 return 0;
6540
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6541 /* The stats applet needs to adjust the Connection header but we don't
6542 * apply any filter there.
6543 */
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6544 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
6545 rep->analysers &= ~an_bit;
6546 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6547 goto skip_filters;
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6548 }
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6549
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6550 /*
6551 * We will have to evaluate the filters.
6552 * As opposed to version 1.2, now they will be evaluated in the
6553 * filters order and not in the header order. This means that
6554 * each filter has to be validated among all headers.
6555 *
6556 * Filters are tried with ->be first, then with ->fe if it is
6557 * different from ->be.
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6558 *
6559 * Maybe we are in resume condiion. In this case I choose the
6560 * "struct proxy" which contains the rule list matching the resume
6561 * pointer. If none of theses "struct proxy" match, I initialise
6562 * the process with the first one.
6563 *
6564 * In fact, I check only correspondance betwwen the current list
6565 * pointer and the ->fe rule list. If it doesn't match, I initialize
6566 * the loop with the ->be.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6567 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6568 if (s->current_rule_list == &sess->fe->http_res_rules)
6569 cur_proxy = sess->fe;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6570 else
6571 cur_proxy = s->be;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6572 while (1) {
6573 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6574
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6575 /* evaluate http-response rules */
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6576 if (ret == HTTP_RULE_RES_CONT) {
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]6577 ret = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, s);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]6578
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6579 if (ret == HTTP_RULE_RES_BADREQ)
6580 goto return_srv_prx_502;
6581
6582 if (ret == HTTP_RULE_RES_DONE) {
6583 rep->analysers &= ~an_bit;
6584 rep->analyse_exp = TICK_ETERNITY;
6585 return 1;
6586 }
6587 }
6588
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6589 /* we need to be called again. */
6590 if (ret == HTTP_RULE_RES_YIELD) {
6591 channel_dont_close(rep);
6592 return 0;
6593 }
6594
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6595 /* try headers filters */
6596 if (rule_set->rsp_exp != NULL) {
6597 if (apply_filters_to_response(s, rep, rule_set) < 0) {
6598 return_bad_resp:
6599 if (objt_server(s->target)) {
6600 objt_server(s->target)->counters.failed_resp++;
6601 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6602 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6603 s->be->be_counters.failed_resp++;
6604 return_srv_prx_502:
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6605 rep->analysers &= AN_RES_FLT_END;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6606 txn->status = 502;
6607 s->logs.t_data = -1; /* was not a valid response */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6608 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6609 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6610 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6611 if (!(s->flags & SF_ERR_MASK))
6612 s->flags |= SF_ERR_PRXCOND;
6613 if (!(s->flags & SF_FINST_MASK))
6614 s->flags |= SF_FINST_H;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6615 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6616 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6617 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6618
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6619 /* has the response been denied ? */
6620 if (txn->flags & TX_SVDENY) {
6621 if (objt_server(s->target))
6622 objt_server(s->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6623
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6624 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6625 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6626 if (sess->listener->counters)
6627 sess->listener->counters->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6628
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6629 goto return_srv_prx_502;
6630 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]6631
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6632 /* add response headers from the rule sets in the same order */
6633 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6634 if (txn->status < 200 && txn->status != 101)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6635 break;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6636 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]6637 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]6638 ret = acl_pass(ret);
6639 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
6640 ret = !ret;
6641 if (!ret)
6642 continue;
6643 }
6644 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
6645 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6646 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6647
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6648 /* check whether we're already working on the frontend */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6649 if (cur_proxy == sess->fe)
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6650 break;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6651 cur_proxy = sess->fe;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6652 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6653
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6654 /* After this point, this anayzer can't return yield, so we can
6655 * remove the bit corresponding to this analyzer from the list.
6656 *
6657 * Note that the intermediate returns and goto found previously
6658 * reset the analyzers.
6659 */
6660 rep->analysers &= ~an_bit;
6661 rep->analyse_exp = TICK_ETERNITY;
6662
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6663 /* OK that's all we can do for 1xx responses */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6664 if (unlikely(txn->status < 200 && txn->status != 101))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6665 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6666
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6667 /*
6668 * Now check for a server cookie.
6669 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]6670 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]6671 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6672
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6673 /*
6674 * Check for cache-control or pragma headers if required.
6675 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6676 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]6677 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6678
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6679 /*
6680 * Add server cookie in the response if needed
6681 */
6682 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
6683 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6684 (!(s->flags & SF_DIRECT) ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6685 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
6686 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
6687 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
6688 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
6689 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6690 !(s->flags & SF_IGNORE_PRST)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6691 /* the server is known, it's not the one the client requested, or the
6692 * cookie's last seen date needs to be refreshed. We have to
6693 * insert a set-cookie here, except if we want to insert only on POST
6694 * requests and this one isn't. Note that servers which don't have cookies
6695 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6696 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6697 if (!objt_server(s->target)->cookie) {
6698 chunk_printf(&trash,
6699 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
6700 s->be->cookie_name);
6701 }
6702 else {
6703 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]6704
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6705 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
6706 /* emit last_date, which is mandatory */
6707 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6708 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6709 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6710
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6711 if (s->be->cookie_maxlife) {
6712 /* emit first_date, which is either the original one or
6713 * the current date.
6714 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6715 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6716 s30tob64(txn->cookie_first_date ?
6717 txn->cookie_first_date >> 2 :
6718 (date.tv_sec+3) >> 2, trash.str + trash.len);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6719 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6720 }
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6721 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6722 chunk_appendf(&trash, "; path=/");
6723 }
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6724
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6725 if (s->be->cookie_domain)
6726 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6727
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6728 if (s->be->ck_opts & PR_CK_HTTPONLY)
6729 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6730
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6731 if (s->be->ck_opts & PR_CK_SECURE)
6732 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6733
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6734 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
6735 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6736
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6737 txn->flags &= ~TX_SCK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6738 if (objt_server(s->target)->cookie && (s->flags & SF_DIRECT))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6739 /* the server did not change, only the date was updated */
6740 txn->flags |= TX_SCK_UPDATED;
6741 else
6742 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6743
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6744 /* Here, we will tell an eventual cache on the client side that we don't
6745 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6746 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6747 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6748 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6749 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6750
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6751 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6752
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6753 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
6754 "Cache-control: private", 22) < 0))
6755 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6756 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6757 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6758
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6759 /*
6760 * Check if result will be cacheable with a cookie.
6761 * We'll block the response if security checks have caught
6762 * nasty things such as a cacheable cookie.
6763 */
6764 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6765 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
6766 (s->be->options & PR_O_CHK_CACHE)) {
6767 /* we're in presence of a cacheable response containing
6768 * a set-cookie header. We'll block it as requested by
6769 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6770 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6771 if (objt_server(s->target))
6772 objt_server(s->target)->counters.failed_secu++;
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6773
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6774 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6775 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6776 if (sess->listener->counters)
6777 sess->listener->counters->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6778
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6779 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
6780 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6781 send_log(s->be, LOG_ALERT,
6782 "Blocking cacheable cookie in response from instance %s, server %s.\n",
6783 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6784 goto return_srv_prx_502;
6785 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6786
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6787 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6788 /*
6789 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
6790 * If an "Upgrade" token is found, the header is left untouched in order
6791 * 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]6792 * if anything but "Upgrade" is present in the Connection header. We don't
6793 * want to touch any 101 response either since it's switching to another
6794 * protocol.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6795 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6796 if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) &&
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6797 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6798 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6799 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
6800 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6801
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6802 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6803 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6804 /* we want a keep-alive response here. Keep-alive header
6805 * required if either side is not 1.1.
6806 */
6807 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
6808 want_flags |= TX_CON_KAL_SET;
6809 }
6810 else {
6811 /* we want a close response here. Close header required if
6812 * the server is 1.1, regardless of the client.
6813 */
6814 if (msg->flags & HTTP_MSGF_VER_11)
6815 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6816 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6817
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6818 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
6819 http_change_connection_header(txn, msg, want_flags);
6820 }
6821
6822 skip_header_mangling:
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6823 if ((msg->flags & HTTP_MSGF_XFER_LEN) || HAS_FILTERS(s) ||
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6824 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6825 rep->analysers &= ~AN_RES_FLT_XFER_DATA;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6826 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6827 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6828
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6829 /* if the user wants to log as soon as possible, without counting
6830 * bytes from the server, then this is the right moment. We have
6831 * to temporarily assign bytes_out to log what we currently have.
6832 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6833 if (!LIST_ISEMPTY(&sess->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6834 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
6835 s->logs.bytes_out = txn->rsp.eoh;
6836 s->do_log(s);
6837 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6838 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6839 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6840}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6841
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6842/* This function is an analyser which forwards response body (including chunk
6843 * sizes if any). It is called as soon as we must forward, even if we forward
6844 * zero byte. The only situation where it must not be called is when we're in
6845 * tunnel mode and we want to forward till the close. It's used both to forward
6846 * remaining data and to resync after end of body. It expects the msg_state to
6847 * 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]6848 * 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]6849 *
6850 * It is capable of compressing response data both in content-length mode and
6851 * in chunked mode. The state machines follows different flows depending on
6852 * whether content-length and chunked modes are used, since there are no
6853 * trailers in content-length :
6854 *
6855 * chk-mode cl-mode
6856 * ,----- BODY -----.
6857 * / \
6858 * V size > 0 V chk-mode
6859 * .--> SIZE -------------> DATA -------------> CRLF
6860 * | | size == 0 | last byte |
6861 * | v final crlf v inspected |
6862 * | TRAILERS -----------> DONE |
6863 * | |
6864 * `----------------------------------------------'
6865 *
6866 * Compression only happens in the DATA state, and must be flushed in final
6867 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
6868 * is performed at once on final states for all bytes parsed, or when leaving
6869 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6870 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6871int http_response_forward_body(struct stream *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6872{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6873 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6874 struct http_txn *txn = s->txn;
6875 struct http_msg *msg = &s->txn->rsp;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6876 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6877
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6878 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6879 return 0;
6880
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6881 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]6882 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6883 !s->req.analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6884 /* Output closed while we were sending data. We must abort and
6885 * wake the other side up.
6886 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]6887 msg->err_state = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6888 msg->msg_state = HTTP_MSG_ERROR;
6889 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6890 return 1;
6891 }
6892
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6893 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6894 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6895
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6896 if (msg->msg_state == HTTP_MSG_BODY) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6897 msg->msg_state = ((msg->flags & HTTP_MSGF_TE_CHNK)
6898 ? HTTP_MSG_CHUNK_SIZE
6899 : HTTP_MSG_DATA);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6900 }
6901
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6902 if (res->to_forward) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6903 /* We can't process the buffer's contents yet */
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6904 res->flags |= CF_WAKE_WRITE;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6905 goto missing_data_or_waiting;
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6906 }
6907
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6908 if (msg->msg_state < HTTP_MSG_DONE) {
6909 ret = ((msg->flags & HTTP_MSGF_TE_CHNK)
6910 ? http_msg_forward_chunked_body(s, msg)
6911 : http_msg_forward_body(s, msg));
6912 if (!ret)
6913 goto missing_data_or_waiting;
6914 if (ret < 0)
6915 goto return_bad_res;
6916 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6917
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6918 /* other states, DONE...TUNNEL */
6919 /* for keep-alive we don't want to forward closes on DONE */
6920 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6921 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
6922 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]6923
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6924 if (http_resync_states(s)) {
6925 /* some state changes occurred, maybe the analyser was disabled
6926 * too. */
6927 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
6928 if (res->flags & CF_SHUTW) {
6929 /* response errors are most likely due to the
6930 * client aborting the transfer. */
6931 goto aborted_xfer;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6932 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6933 if (msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]6934 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]6935 goto return_bad_res;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6936 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6937 return 1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6938 }
Willy Tarreauf51d03c2016-05-02 15:25:15 +0200[diff] [blame]6939 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6940
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6941 missing_data_or_waiting:
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6942 if (res->flags & CF_SHUTW)
6943 goto aborted_xfer;
6944
6945 /* stop waiting for data if the input is closed before the end. If the
6946 * client side was already closed, it means that the client has aborted,
6947 * so we don't want to count this as a server abort. Otherwise it's a
6948 * server abort.
6949 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6950 if (res->flags & CF_SHUTR) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6951 if ((s->req.flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6952 goto aborted_xfer;
Christopher Fauleta46bbd82015-06-19 09:00:58 +0200[diff] [blame]6953 /* If we have some pending data, we continue the processing */
6954 if (!buffer_pending(res->buf)) {
6955 if (!(s->flags & SF_ERR_MASK))
6956 s->flags |= SF_ERR_SRVCL;
6957 s->be->be_counters.srv_aborts++;
6958 if (objt_server(s->target))
6959 objt_server(s->target)->counters.srv_aborts++;
6960 goto return_bad_res_stats_ok;
6961 }
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6962 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6963
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6964 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6965 if (!s->req.analysers)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6966 goto return_bad_res;
6967
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6968 /* When TE: chunked is used, we need to get there again to parse
6969 * remaining chunks even if the server has closed, so we don't want to
6970 * set CF_DONTCLOSE. Similarly, if the body length is undefined, if
6971 * keep-alive is set on the client side or if there are filters
6972 * registered on the stream, we don't want to forward a close
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6973 */
Christopher Faulet92d36382015-11-05 13:35:03 +0100[diff] [blame]6974 if ((msg->flags & HTTP_MSGF_TE_CHNK) || !msg->body_len ||
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6975 HAS_FILTERS(s) ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6976 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6977 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6978 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6979
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6980 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6981 * 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]6982 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6983 * modes are already handled by the stream sock layer. We must not do
6984 * this in content-length mode because it could present the MSG_MORE
6985 * flag with the last block of forwarded data, which would cause an
6986 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6987 */
Christopher Faulet92d36382015-11-05 13:35:03 +0100[diff] [blame]6988 if ((msg->flags & HTTP_MSGF_TE_CHNK) || (msg->flags & HTTP_MSGF_COMPRESSING))
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6989 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6990
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6991 /* the stream handler will take care of timeouts and errors */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6992 return 0;
6993
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6994 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6995 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6996 if (objt_server(s->target))
6997 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6998
6999 return_bad_res_stats_ok:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]7000 txn->rsp.err_state = txn->rsp.msg_state;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7001 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]7002 /* don't send any error message as we're in the body */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]7003 http_reply_and_close(s, txn->status, NULL);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]7004 res->analysers &= AN_RES_FLT_END;
7005 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]7006 if (objt_server(s->target))
7007 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7008
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7009 if (!(s->flags & SF_ERR_MASK))
7010 s->flags |= SF_ERR_PRXCOND;
7011 if (!(s->flags & SF_FINST_MASK))
7012 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7013 return 0;
7014
7015 aborted_xfer:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]7016 txn->rsp.err_state = txn->rsp.msg_state;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7017 txn->rsp.msg_state = HTTP_MSG_ERROR;
7018 /* don't send any error message as we're in the body */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]7019 http_reply_and_close(s, txn->status, NULL);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]7020 res->analysers &= AN_RES_FLT_END;
7021 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]7022
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7023 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]7024 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7025 if (objt_server(s->target))
7026 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7027
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7028 if (!(s->flags & SF_ERR_MASK))
7029 s->flags |= SF_ERR_CLICL;
7030 if (!(s->flags & SF_FINST_MASK))
7031 s->flags |= SF_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7032 return 0;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7033}
7034
7035
7036static inline int
7037http_msg_forward_body(struct stream *s, struct http_msg *msg)
7038{
7039 struct channel *chn = msg->chn;
7040 int ret;
7041
7042 /* Here we have the guarantee to be in HTTP_MSG_DATA or HTTP_MSG_ENDING state */
7043
7044 if (msg->msg_state == HTTP_MSG_ENDING)
7045 goto ending;
7046
7047 /* Neither content-length, nor transfer-encoding was found, so we must
7048 * read the body until the server connection is closed. In that case, we
7049 * eat data as they come. Of course, this happens for response only. */
7050 if (!(msg->flags & HTTP_MSGF_XFER_LEN)) {
7051 unsigned long long len = (chn->buf->i - msg->next);
7052 msg->chunk_len += len;
7053 msg->body_len += len;
7054 }
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7055 ret = FLT_STRM_DATA_CB(s, chn, flt_http_data(s, msg),
7056 /* default_ret */ MIN(msg->chunk_len, chn->buf->i - msg->next),
7057 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7058 msg->next += ret;
7059 msg->chunk_len -= ret;
7060 if (msg->chunk_len) {
7061 /* input empty or output full */
7062 if (chn->buf->i > msg->next)
7063 chn->flags |= CF_WAKE_WRITE;
7064 goto missing_data_or_waiting;
7065 }
7066
Christopher Faulet32359572016-11-29 14:49:54 +0100[diff] [blame]7067 if (!(msg->flags & HTTP_MSGF_XFER_LEN) && !(chn->flags & CF_SHUTR) &&
7068 HAS_DATA_FILTERS(s, chn)) {
7069 /* The server still sending data that should be filtered */
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7070 goto missing_data_or_waiting;
7071 }
7072 msg->msg_state = HTTP_MSG_ENDING;
7073
7074 ending:
7075 /* we may have some pending data starting at res->buf->p such as a last
7076 * chunk of data or trailers. */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7077 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
7078 /* default_ret */ msg->next,
7079 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7080 b_adv(chn->buf, ret);
7081 msg->next -= ret;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]7082 if (unlikely(!(chn->flags & CF_WROTE_DATA) || msg->sov > 0))
7083 msg->sov -= ret;
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]7084 if (msg->next)
7085 goto waiting;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]7086
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7087 FLT_STRM_DATA_CB(s, chn, flt_http_end(s, msg),
7088 /* default_ret */ 1,
7089 /* on_error */ goto error,
7090 /* on_wait */ goto waiting);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7091 msg->msg_state = HTTP_MSG_DONE;
7092 return 1;
7093
7094 missing_data_or_waiting:
7095 /* we may have some pending data starting at chn->buf->p */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7096 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
7097 /* default_ret */ msg->next,
7098 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7099 b_adv(chn->buf, ret);
7100 msg->next -= ret;
7101 if (!(chn->flags & CF_WROTE_DATA) || msg->sov > 0)
7102 msg->sov -= ret;
Christopher Faulet75e2eb62015-12-15 10:41:47 +0100[diff] [blame]7103 if (!HAS_DATA_FILTERS(s, chn))
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7104 msg->chunk_len -= channel_forward(chn, msg->chunk_len);
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]7105 waiting:
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7106 return 0;
7107 error:
7108 return -1;
7109}
7110
7111static inline int
7112http_msg_forward_chunked_body(struct stream *s, struct http_msg *msg)
7113{
7114 struct channel *chn = msg->chn;
7115 int ret;
7116
7117 /* Here we have the guarantee to be in one of the following state:
7118 * HTTP_MSG_DATA, HTTP_MSG_CHUNK_SIZE, HTTP_MSG_CHUNK_CRLF,
7119 * HTTP_MSG_TRAILERS or HTTP_MSG_ENDING. */
7120
7121 switch_states:
7122 switch (msg->msg_state) {
7123 case HTTP_MSG_DATA:
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7124 ret = FLT_STRM_DATA_CB(s, chn, flt_http_data(s, msg),
7125 /* default_ret */ MIN(msg->chunk_len, chn->buf->i - msg->next),
7126 /* on_error */ goto error);
7127 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7128 msg->chunk_len -= ret;
7129 if (msg->chunk_len) {
7130 /* input empty or output full */
7131 if (chn->buf->i > msg->next)
7132 chn->flags |= CF_WAKE_WRITE;
7133 goto missing_data_or_waiting;
7134 }
7135
7136 /* nothing left to forward for this chunk*/
7137 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
7138 /* fall through for HTTP_MSG_CHUNK_CRLF */
7139
7140 case HTTP_MSG_CHUNK_CRLF:
7141 /* we want the CRLF after the data */
7142 ret = http_skip_chunk_crlf(msg);
7143 if (ret == 0)
7144 goto missing_data_or_waiting;
7145 if (ret < 0)
7146 goto chunk_parsing_error;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]7147 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7148 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
7149 /* fall through for HTTP_MSG_CHUNK_SIZE */
7150
7151 case HTTP_MSG_CHUNK_SIZE:
7152 /* read the chunk size and assign it to ->chunk_len,
7153 * then set ->next to point to the body and switch to
7154 * DATA or TRAILERS state.
7155 */
7156 ret = http_parse_chunk_size(msg);
7157 if (ret == 0)
7158 goto missing_data_or_waiting;
7159 if (ret < 0)
7160 goto chunk_parsing_error;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]7161 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7162 if (msg->chunk_len) {
7163 msg->msg_state = HTTP_MSG_DATA;
7164 goto switch_states;
7165 }
7166 msg->msg_state = HTTP_MSG_TRAILERS;
7167 /* fall through for HTTP_MSG_TRAILERS */
7168
7169 case HTTP_MSG_TRAILERS:
7170 ret = http_forward_trailers(msg);
7171 if (ret < 0)
7172 goto chunk_parsing_error;
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7173 FLT_STRM_DATA_CB(s, chn, flt_http_chunk_trailers(s, msg),
7174 /* default_ret */ 1,
7175 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7176 msg->next += msg->sol;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7177 if (!ret)
7178 goto missing_data_or_waiting;
7179 break;
7180
7181 case HTTP_MSG_ENDING:
7182 goto ending;
7183
7184 default:
7185 /* This should no happen in this function */
7186 goto error;
7187 }
7188
7189 msg->msg_state = HTTP_MSG_ENDING;
7190 ending:
7191 /* we may have some pending data starting at res->buf->p such as a last
7192 * chunk of data or trailers. */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7193 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]7194 /* default_ret */ msg->next,
7195 /* on_error */ goto error);
7196 b_adv(chn->buf, ret);
7197 msg->next -= ret;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]7198 if (unlikely(!(chn->flags & CF_WROTE_DATA) || msg->sov > 0))
7199 msg->sov -= ret;
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]7200 if (msg->next)
7201 goto waiting;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]7202
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7203 FLT_STRM_DATA_CB(s, chn, flt_http_end(s, msg),
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7204 /* default_ret */ 1,
7205 /* on_error */ goto error,
7206 /* on_wait */ goto waiting);
7207 msg->msg_state = HTTP_MSG_DONE;
7208 return 1;
7209
7210 missing_data_or_waiting:
7211 /* we may have some pending data starting at chn->buf->p */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7212 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]7213 /* default_ret */ msg->next,
7214 /* on_error */ goto error);
7215 b_adv(chn->buf, ret);
7216 msg->next -= ret;
7217 if (!(chn->flags & CF_WROTE_DATA) || msg->sov > 0)
7218 msg->sov -= ret;
Christopher Faulet75e2eb62015-12-15 10:41:47 +0100[diff] [blame]7219 if (!HAS_DATA_FILTERS(s, chn))
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7220 msg->chunk_len -= channel_forward(chn, msg->chunk_len);
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]7221 waiting:
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7222 return 0;
7223
7224 chunk_parsing_error:
7225 if (msg->err_pos >= 0) {
7226 if (chn->flags & CF_ISRESP)
7227 http_capture_bad_message(&s->be->invalid_rep, s, msg,
7228 msg->msg_state, strm_fe(s));
7229 else
7230 http_capture_bad_message(&strm_fe(s)->invalid_req, s,
7231 msg, msg->msg_state, s->be);
7232 }
7233 error:
7234 return -1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7235}
7236
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7237
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7238/* Iterate the same filter through all request headers.
7239 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7240 * Since it can manage the switch to another backend, it updates the per-proxy
7241 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7242 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7243int 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]7244{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7245 char *cur_ptr, *cur_end, *cur_next;
7246 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7247 struct http_txn *txn = s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7248 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7249 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]7250
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7251 last_hdr = 0;
7252
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7253 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7254 old_idx = 0;
7255
7256 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7257 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7258 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7259 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7260 (exp->action == ACT_ALLOW ||
7261 exp->action == ACT_DENY ||
7262 exp->action == ACT_TARPIT))
7263 return 0;
7264
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7265 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7266 if (!cur_idx)
7267 break;
7268
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7269 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7270 cur_ptr = cur_next;
7271 cur_end = cur_ptr + cur_hdr->len;
7272 cur_next = cur_end + cur_hdr->cr + 1;
7273
7274 /* Now we have one header between cur_ptr and cur_end,
7275 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7276 */
7277
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7278 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]7279 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7280 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7281 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7282 last_hdr = 1;
7283 break;
7284
7285 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7286 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7287 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7288 break;
7289
7290 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7291 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7292 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7293 break;
7294
7295 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7296 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7297 if (trash.len < 0)
7298 return -1;
7299
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7300 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7301 /* FIXME: if the user adds a newline in the replacement, the
7302 * index will not be recalculated for now, and the new line
7303 * will not be counted as a new header.
7304 */
7305
7306 cur_end += delta;
7307 cur_next += delta;
7308 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7309 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7310 break;
7311
7312 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7313 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7314 cur_next += delta;
7315
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7316 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7317 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7318 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7319 cur_hdr->len = 0;
7320 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7321 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7322 break;
7323
7324 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7325 }
7326
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7327 /* keep the link from this header to next one in case of later
7328 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7329 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7330 old_idx = cur_idx;
7331 }
7332 return 0;
7333}
7334
7335
7336/* Apply the filter to the request line.
7337 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7338 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7339 * Since it can manage the switch to another backend, it updates the per-proxy
7340 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7341 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7342int 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]7343{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7344 char *cur_ptr, *cur_end;
7345 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7346 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7347 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7348
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7349 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7350 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7351 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7352 (exp->action == ACT_ALLOW ||
7353 exp->action == ACT_DENY ||
7354 exp->action == ACT_TARPIT))
7355 return 0;
7356 else if (exp->action == ACT_REMOVE)
7357 return 0;
7358
7359 done = 0;
7360
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7361 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7362 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7363
7364 /* Now we have the request line between cur_ptr and cur_end */
7365
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7366 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]7367 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7368 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7369 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7370 done = 1;
7371 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7372
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7373 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7374 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7375 done = 1;
7376 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7377
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7378 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7379 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7380 done = 1;
7381 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7382
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7383 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7384 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7385 if (trash.len < 0)
7386 return -1;
7387
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7388 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7389 /* FIXME: if the user adds a newline in the replacement, the
7390 * index will not be recalculated for now, and the new line
7391 * will not be counted as a new header.
7392 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7393
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7394 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7395 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7396 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7397 HTTP_MSG_RQMETH,
7398 cur_ptr, cur_end + 1,
7399 NULL, NULL);
7400 if (unlikely(!cur_end))
7401 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7402
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7403 /* we have a full request and we know that we have either a CR
7404 * or an LF at <ptr>.
7405 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7406 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
7407 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]7408 /* there is no point trying this regex on headers */
7409 return 1;
7410 }
7411 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7412 return done;
7413}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]7414
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7415
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7416
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7417/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7418 * 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]7419 * 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]7420 * unparsable request. Since it can manage the switch to another backend, it
7421 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7422 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7423int apply_filters_to_request(struct stream *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7424{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7425 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7426 struct http_txn *txn = s->txn;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7427 struct hdr_exp *exp;
7428
7429 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7430 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7431
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7432 /*
7433 * The interleaving of transformations and verdicts
7434 * makes it difficult to decide to continue or stop
7435 * the evaluation.
7436 */
7437
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7438 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
7439 break;
7440
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7441 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7442 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7443 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7444 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7445
7446 /* if this filter had a condition, evaluate it now and skip to
7447 * next filter if the condition does not match.
7448 */
7449 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7450 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]7451 ret = acl_pass(ret);
7452 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7453 ret = !ret;
7454
7455 if (!ret)
7456 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7457 }
7458
7459 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7460 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7461 if (unlikely(ret < 0))
7462 return -1;
7463
7464 if (likely(ret == 0)) {
7465 /* The filter did not match the request, it can be
7466 * iterated through all headers.
7467 */
Willy Tarreau34d4c3c2015-01-30 20:58:58 +0100[diff] [blame]7468 if (unlikely(apply_filter_to_req_headers(s, req, exp) < 0))
7469 return -1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7470 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7471 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7472 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7473}
7474
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7475
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7476/* Find the end of a cookie value contained between <s> and <e>. It works the
7477 * same way as with headers above except that the semi-colon also ends a token.
7478 * See RFC2965 for more information. Note that it requires a valid header to
7479 * return a valid result.
7480 */
7481char *find_cookie_value_end(char *s, const char *e)
7482{
7483 int quoted, qdpair;
7484
7485 quoted = qdpair = 0;
7486 for (; s < e; s++) {
7487 if (qdpair) qdpair = 0;
7488 else if (quoted) {
7489 if (*s == '\\') qdpair = 1;
7490 else if (*s == '"') quoted = 0;
7491 }
7492 else if (*s == '"') quoted = 1;
7493 else if (*s == ',' || *s == ';') return s;
7494 }
7495 return s;
7496}
7497
7498/* Delete a value in a header between delimiters <from> and <next> in buffer
7499 * <buf>. The number of characters displaced is returned, and the pointer to
7500 * the first delimiter is updated if required. The function tries as much as
7501 * possible to respect the following principles :
7502 * - replace <from> delimiter by the <next> one unless <from> points to a
7503 * colon, in which case <next> is simply removed
7504 * - set exactly one space character after the new first delimiter, unless
7505 * there are not enough characters in the block being moved to do so.
7506 * - remove unneeded spaces before the previous delimiter and after the new
7507 * one.
7508 *
7509 * It is the caller's responsibility to ensure that :
7510 * - <from> points to a valid delimiter or the colon ;
7511 * - <next> points to a valid delimiter or the final CR/LF ;
7512 * - there are non-space chars before <from> ;
7513 * - there is a CR/LF at or after <next>.
7514 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]7515int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7516{
7517 char *prev = *from;
7518
7519 if (*prev == ':') {
7520 /* We're removing the first value, preserve the colon and add a
7521 * space if possible.
7522 */
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7523 if (!HTTP_IS_CRLF(*next))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7524 next++;
7525 prev++;
7526 if (prev < next)
7527 *prev++ = ' ';
7528
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7529 while (HTTP_IS_SPHT(*next))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7530 next++;
7531 } else {
7532 /* Remove useless spaces before the old delimiter. */
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7533 while (HTTP_IS_SPHT(*(prev-1)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7534 prev--;
7535 *from = prev;
7536
7537 /* copy the delimiter and if possible a space if we're
7538 * not at the end of the line.
7539 */
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7540 if (!HTTP_IS_CRLF(*next)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7541 *prev++ = *next++;
7542 if (prev + 1 < next)
7543 *prev++ = ' ';
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7544 while (HTTP_IS_SPHT(*next))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7545 next++;
7546 }
7547 }
7548 return buffer_replace2(buf, prev, next, NULL, 0);
7549}
7550
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7551/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7552 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7553 * desirable to call it only when needed. This code is quite complex because
7554 * of the multiple very crappy and ambiguous syntaxes we have to support. it
7555 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7556 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7557void manage_client_side_cookies(struct stream *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7558{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7559 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7560 struct session *sess = s->sess;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7561 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7562 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7563 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
7564 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7565
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7566 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]7567 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7568 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7569
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7570 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7571 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7572 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7573
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7574 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7575 hdr_beg = hdr_next;
7576 hdr_end = hdr_beg + cur_hdr->len;
7577 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7578
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7579 /* We have one full header between hdr_beg and hdr_end, and the
7580 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7581 * "Cookie:" headers.
7582 */
7583
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7584 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7585 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7586 old_idx = cur_idx;
7587 continue;
7588 }
7589
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7590 del_from = NULL; /* nothing to be deleted */
7591 preserve_hdr = 0; /* assume we may kill the whole header */
7592
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7593 /* Now look for cookies. Conforming to RFC2109, we have to support
7594 * attributes whose name begin with a '$', and associate them with
7595 * the right cookie, if we want to delete this cookie.
7596 * So there are 3 cases for each cookie read :
7597 * 1) it's a special attribute, beginning with a '$' : ignore it.
7598 * 2) it's a server id cookie that we *MAY* want to delete : save
7599 * some pointers on it (last semi-colon, beginning of cookie...)
7600 * 3) it's an application cookie : we *MAY* have to delete a previous
7601 * "special" cookie.
7602 * At the end of loop, if a "special" cookie remains, we may have to
7603 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7604 * *MUST* delete it.
7605 *
7606 * Note: RFC2965 is unclear about the processing of spaces around
7607 * the equal sign in the ATTR=VALUE form. A careful inspection of
7608 * the RFC explicitly allows spaces before it, and not within the
7609 * tokens (attrs or values). An inspection of RFC2109 allows that
7610 * too but section 10.1.3 lets one think that spaces may be allowed
7611 * after the equal sign too, resulting in some (rare) buggy
7612 * implementations trying to do that. So let's do what servers do.
7613 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
7614 * allowed quoted strings in values, with any possible character
7615 * after a backslash, including control chars and delimitors, which
7616 * causes parsing to become ambiguous. Browsers also allow spaces
7617 * within values even without quotes.
7618 *
7619 * We have to keep multiple pointers in order to support cookie
7620 * removal at the beginning, middle or end of header without
7621 * corrupting the header. All of these headers are valid :
7622 *
7623 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
7624 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
7625 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
7626 * | | | | | | | | |
7627 * | | | | | | | | hdr_end <--+
7628 * | | | | | | | +--> next
7629 * | | | | | | +----> val_end
7630 * | | | | | +-----------> val_beg
7631 * | | | | +--------------> equal
7632 * | | | +----------------> att_end
7633 * | | +---------------------> att_beg
7634 * | +--------------------------> prev
7635 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7636 */
7637
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7638 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
7639 /* Iterate through all cookies on this line */
7640
7641 /* find att_beg */
7642 att_beg = prev + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7643 while (att_beg < hdr_end && HTTP_IS_SPHT(*att_beg))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7644 att_beg++;
7645
7646 /* find att_end : this is the first character after the last non
7647 * space before the equal. It may be equal to hdr_end.
7648 */
7649 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7650
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7651 while (equal < hdr_end) {
7652 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7653 break;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7654 if (HTTP_IS_SPHT(*equal++))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7655 continue;
7656 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7657 }
7658
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7659 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7660 * is between <att_beg> and <equal>, both may be identical.
7661 */
7662
7663 /* look for end of cookie if there is an equal sign */
7664 if (equal < hdr_end && *equal == '=') {
7665 /* look for the beginning of the value */
7666 val_beg = equal + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7667 while (val_beg < hdr_end && HTTP_IS_SPHT(*val_beg))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7668 val_beg++;
7669
7670 /* find the end of the value, respecting quotes */
7671 next = find_cookie_value_end(val_beg, hdr_end);
7672
7673 /* make val_end point to the first white space or delimitor after the value */
7674 val_end = next;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7675 while (val_end > val_beg && HTTP_IS_SPHT(*(val_end - 1)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7676 val_end--;
7677 } else {
7678 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7679 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7680
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7681 /* We have nothing to do with attributes beginning with '$'. However,
7682 * they will automatically be removed if a header before them is removed,
7683 * since they're supposed to be linked together.
7684 */
7685 if (*att_beg == '$')
7686 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7687
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7688 /* Ignore cookies with no equal sign */
7689 if (equal == next) {
7690 /* This is not our cookie, so we must preserve it. But if we already
7691 * scheduled another cookie for removal, we cannot remove the
7692 * complete header, but we can remove the previous block itself.
7693 */
7694 preserve_hdr = 1;
7695 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7696 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7697 val_end += delta;
7698 next += delta;
7699 hdr_end += delta;
7700 hdr_next += delta;
7701 cur_hdr->len += delta;
7702 http_msg_move_end(&txn->req, delta);
7703 prev = del_from;
7704 del_from = NULL;
7705 }
7706 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7707 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7708
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7709 /* if there are spaces around the equal sign, we need to
7710 * strip them otherwise we'll get trouble for cookie captures,
7711 * or even for rewrites. Since this happens extremely rarely,
7712 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7713 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7714 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7715 int stripped_before = 0;
7716 int stripped_after = 0;
7717
7718 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7719 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7720 equal += stripped_before;
7721 val_beg += stripped_before;
7722 }
7723
7724 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7725 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7726 val_beg += stripped_after;
7727 stripped_before += stripped_after;
7728 }
7729
7730 val_end += stripped_before;
7731 next += stripped_before;
7732 hdr_end += stripped_before;
7733 hdr_next += stripped_before;
7734 cur_hdr->len += stripped_before;
7735 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7736 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7737 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7738
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7739 /* First, let's see if we want to capture this cookie. We check
7740 * that we don't already have a client side cookie, because we
7741 * can only capture one. Also as an optimisation, we ignore
7742 * cookies shorter than the declared name.
7743 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7744 if (sess->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7745 (val_end - att_beg >= sess->fe->capture_namelen) &&
7746 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7747 int log_len = val_end - att_beg;
7748
7749 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7750 Alert("HTTP logging : out of memory.\n");
7751 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7752 if (log_len > sess->fe->capture_len)
7753 log_len = sess->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7754 memcpy(txn->cli_cookie, att_beg, log_len);
7755 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7756 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7757 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7758
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7759 /* Persistence cookies in passive, rewrite or insert mode have the
7760 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7761 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7762 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7763 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7764 * For cookies in prefix mode, the form is :
7765 *
7766 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7767 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7768 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
7769 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
7770 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7771 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7772
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7773 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7774 * have the server ID between val_beg and delim, and the original cookie between
7775 * delim+1 and val_end. Otherwise, delim==val_end :
7776 *
7777 * Cookie: NAME=SRV; # in all but prefix modes
7778 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7779 * | || || | |+-> next
7780 * | || || | +--> val_end
7781 * | || || +---------> delim
7782 * | || |+------------> val_beg
7783 * | || +-------------> att_end = equal
7784 * | |+-----------------> att_beg
7785 * | +------------------> prev
7786 * +-------------------------> hdr_beg
7787 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7788
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7789 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7790 for (delim = val_beg; delim < val_end; delim++)
7791 if (*delim == COOKIE_DELIM)
7792 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7793 } else {
7794 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7795 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7796 /* Now check if the cookie contains a date field, which would
7797 * appear after a vertical bar ('|') just after the server name
7798 * and before the delimiter.
7799 */
7800 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7801 if (vbar1) {
7802 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7803 * right is the last seen date. It is a base64 encoded
7804 * 30-bit value representing the UNIX date since the
7805 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7806 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7807 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7808 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7809 if (val_end - vbar1 >= 5) {
7810 val = b64tos30(vbar1);
7811 if (val > 0)
7812 txn->cookie_last_date = val << 2;
7813 }
7814 /* look for a second vertical bar */
7815 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7816 if (vbar1 && (val_end - vbar1 > 5)) {
7817 val = b64tos30(vbar1 + 1);
7818 if (val > 0)
7819 txn->cookie_first_date = val << 2;
7820 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7821 }
7822 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7823
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7824 /* if the cookie has an expiration date and the proxy wants to check
7825 * it, then we do that now. We first check if the cookie is too old,
7826 * then only if it has expired. We detect strict overflow because the
7827 * time resolution here is not great (4 seconds). Cookies with dates
7828 * in the future are ignored if their offset is beyond one day. This
7829 * allows an admin to fix timezone issues without expiring everyone
7830 * and at the same time avoids keeping unwanted side effects for too
7831 * long.
7832 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7833 if (txn->cookie_first_date && s->be->cookie_maxlife &&
7834 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7835 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7836 txn->flags &= ~TX_CK_MASK;
7837 txn->flags |= TX_CK_OLD;
7838 delim = val_beg; // let's pretend we have not found the cookie
7839 txn->cookie_first_date = 0;
7840 txn->cookie_last_date = 0;
7841 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7842 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
7843 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7844 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7845 txn->flags &= ~TX_CK_MASK;
7846 txn->flags |= TX_CK_EXPIRED;
7847 delim = val_beg; // let's pretend we have not found the cookie
7848 txn->cookie_first_date = 0;
7849 txn->cookie_last_date = 0;
7850 }
7851
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7852 /* Here, we'll look for the first running server which supports the cookie.
7853 * This allows to share a same cookie between several servers, for example
7854 * to dedicate backup servers to specific servers only.
7855 * However, to prevent clients from sticking to cookie-less backup server
7856 * when they have incidentely learned an empty cookie, we simply ignore
7857 * empty cookies and mark them as invalid.
7858 * The same behaviour is applied when persistence must be ignored.
7859 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7860 if ((delim == val_beg) || (s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7861 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7862
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7863 while (srv) {
7864 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7865 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7866 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7867 (s->be->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7868 (s->flags & SF_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7869 /* we found the server and we can use it */
7870 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7871 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7872 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7873 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7874 break;
7875 } else {
7876 /* we found a server, but it's down,
7877 * mark it as such and go on in case
7878 * another one is available.
7879 */
7880 txn->flags &= ~TX_CK_MASK;
7881 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7882 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7883 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7884 srv = srv->next;
7885 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7886
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7887 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7888 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7889 txn->flags &= ~TX_CK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7890 if ((s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7891 txn->flags |= TX_CK_UNUSED;
7892 else
7893 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7894 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7895
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7896 /* depending on the cookie mode, we may have to either :
7897 * - delete the complete cookie if we're in insert+indirect mode, so that
7898 * the server never sees it ;
7899 * - remove the server id from the cookie value, and tag the cookie as an
7900 * application cookie so that it does not get accidentely removed later,
7901 * if we're in cookie prefix mode
7902 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7903 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7904 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7905
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7906 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7907 val_end += delta;
7908 next += delta;
7909 hdr_end += delta;
7910 hdr_next += delta;
7911 cur_hdr->len += delta;
7912 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7913
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7914 del_from = NULL;
7915 preserve_hdr = 1; /* we want to keep this cookie */
7916 }
7917 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7918 (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]7919 del_from = prev;
7920 }
7921 } else {
7922 /* This is not our cookie, so we must preserve it. But if we already
7923 * scheduled another cookie for removal, we cannot remove the
7924 * complete header, but we can remove the previous block itself.
7925 */
7926 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7927
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7928 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7929 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7930 if (att_beg >= del_from)
7931 att_beg += delta;
7932 if (att_end >= del_from)
7933 att_end += delta;
7934 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7935 val_end += delta;
7936 next += delta;
7937 hdr_end += delta;
7938 hdr_next += delta;
7939 cur_hdr->len += delta;
7940 http_msg_move_end(&txn->req, delta);
7941 prev = del_from;
7942 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7943 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7944 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7945
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7946 /* continue with next cookie on this header line */
7947 att_beg = next;
7948 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7949
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7950 /* There are no more cookies on this line.
7951 * We may still have one (or several) marked for deletion at the
7952 * end of the line. We must do this now in two ways :
7953 * - if some cookies must be preserved, we only delete from the
7954 * mark to the end of line ;
7955 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7956 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7957 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7958 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7959 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7960 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7961 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7962 cur_hdr->len += delta;
7963 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7964 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7965
7966 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7967 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7968 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7969 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7970 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7971 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7972 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7973 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7974 }
7975
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7976 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7977 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7978 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7979}
7980
7981
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7982/* Iterate the same filter through all response headers contained in <rtr>.
7983 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7984 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7985int 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]7986{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7987 char *cur_ptr, *cur_end, *cur_next;
7988 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7989 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7990 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7991 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7992
7993 last_hdr = 0;
7994
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7995 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7996 old_idx = 0;
7997
7998 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7999 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8000 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8001 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8002 (exp->action == ACT_ALLOW ||
8003 exp->action == ACT_DENY))
8004 return 0;
8005
8006 cur_idx = txn->hdr_idx.v[old_idx].next;
8007 if (!cur_idx)
8008 break;
8009
8010 cur_hdr = &txn->hdr_idx.v[cur_idx];
8011 cur_ptr = cur_next;
8012 cur_end = cur_ptr + cur_hdr->len;
8013 cur_next = cur_end + cur_hdr->cr + 1;
8014
8015 /* Now we have one header between cur_ptr and cur_end,
8016 * and the next header starts at cur_next.
8017 */
8018
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]8019 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]8020 switch (exp->action) {
8021 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8022 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8023 last_hdr = 1;
8024 break;
8025
8026 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8027 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8028 last_hdr = 1;
8029 break;
8030
8031 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8032 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
8033 if (trash.len < 0)
8034 return -1;
8035
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8036 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8037 /* FIXME: if the user adds a newline in the replacement, the
8038 * index will not be recalculated for now, and the new line
8039 * will not be counted as a new header.
8040 */
8041
8042 cur_end += delta;
8043 cur_next += delta;
8044 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8045 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8046 break;
8047
8048 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8049 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8050 cur_next += delta;
8051
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8052 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8053 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8054 txn->hdr_idx.used--;
8055 cur_hdr->len = 0;
8056 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8057 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8058 break;
8059
8060 }
8061 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8062
8063 /* keep the link from this header to next one in case of later
8064 * removal of next header.
8065 */
8066 old_idx = cur_idx;
8067 }
8068 return 0;
8069}
8070
8071
8072/* Apply the filter to the status line in the response buffer <rtr>.
8073 * Returns 0 if nothing has been done, 1 if the filter has been applied,
8074 * or -1 if a replacement resulted in an invalid status line.
8075 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8076int 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]8077{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8078 char *cur_ptr, *cur_end;
8079 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8080 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8081 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8082
8083
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8084 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8085 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8086 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8087 (exp->action == ACT_ALLOW ||
8088 exp->action == ACT_DENY))
8089 return 0;
8090 else if (exp->action == ACT_REMOVE)
8091 return 0;
8092
8093 done = 0;
8094
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8095 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]8096 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8097
8098 /* Now we have the status line between cur_ptr and cur_end */
8099
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]8100 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]8101 switch (exp->action) {
8102 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8103 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8104 done = 1;
8105 break;
8106
8107 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8108 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8109 done = 1;
8110 break;
8111
8112 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8113 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
8114 if (trash.len < 0)
8115 return -1;
8116
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8117 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8118 /* FIXME: if the user adds a newline in the replacement, the
8119 * index will not be recalculated for now, and the new line
8120 * will not be counted as a new header.
8121 */
8122
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8123 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8124 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8125 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]8126 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8127 cur_ptr, cur_end + 1,
8128 NULL, NULL);
8129 if (unlikely(!cur_end))
8130 return -1;
8131
8132 /* we have a full respnse and we know that we have either a CR
8133 * or an LF at <ptr>.
8134 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8135 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]8136 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]8137 /* there is no point trying this regex on headers */
8138 return 1;
8139 }
8140 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8141 return done;
8142}
8143
8144
8145
8146/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8147 * 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]8148 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
8149 * unparsable response.
8150 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8151int apply_filters_to_response(struct stream *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8152{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]8153 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8154 struct http_txn *txn = s->txn;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8155 struct hdr_exp *exp;
8156
8157 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8158 int ret;
8159
8160 /*
8161 * The interleaving of transformations and verdicts
8162 * makes it difficult to decide to continue or stop
8163 * the evaluation.
8164 */
8165
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8166 if (txn->flags & TX_SVDENY)
8167 break;
8168
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8169 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8170 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
8171 exp->action == ACT_PASS)) {
8172 exp = exp->next;
8173 continue;
8174 }
8175
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8176 /* if this filter had a condition, evaluate it now and skip to
8177 * next filter if the condition does not match.
8178 */
8179 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]8180 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]8181 ret = acl_pass(ret);
8182 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
8183 ret = !ret;
8184 if (!ret)
8185 continue;
8186 }
8187
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8188 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8189 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8190 if (unlikely(ret < 0))
8191 return -1;
8192
8193 if (likely(ret == 0)) {
8194 /* The filter did not match the response, it can be
8195 * iterated through all headers.
8196 */
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8197 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
8198 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8199 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8200 }
8201 return 0;
8202}
8203
8204
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8205/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]8206 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8207 * desirable to call it only when needed. This function is also used when we
8208 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8209 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8210void manage_server_side_cookies(struct stream *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8211{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8212 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8213 struct session *sess = s->sess;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8214 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8215 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8216 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8217 char *hdr_beg, *hdr_end, *hdr_next;
8218 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8219
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8220 /* Iterate through the headers.
8221 * we start with the start line.
8222 */
8223 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8224 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8225
8226 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
8227 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8228 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8229
8230 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8231 hdr_beg = hdr_next;
8232 hdr_end = hdr_beg + cur_hdr->len;
8233 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8234
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8235 /* We have one full header between hdr_beg and hdr_end, and the
8236 * next header starts at hdr_next. We're only interested in
8237 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8238 */
8239
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8240 is_cookie2 = 0;
8241 prev = hdr_beg + 10;
8242 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8243 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8244 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
8245 if (!val) {
8246 old_idx = cur_idx;
8247 continue;
8248 }
8249 is_cookie2 = 1;
8250 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8251 }
8252
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8253 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
8254 * <prev> points to the colon.
8255 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8256 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8257
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8258 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
8259 * check-cache is enabled) and we are not interested in checking
8260 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]8261 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]8262 if (s->be->cookie_name == NULL && sess->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8263 return;
8264
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8265 /* OK so now we know we have to process this response cookie.
8266 * The format of the Set-Cookie header is slightly different
8267 * from the format of the Cookie header in that it does not
8268 * support the comma as a cookie delimiter (thus the header
8269 * cannot be folded) because the Expires attribute described in
8270 * the original Netscape's spec may contain an unquoted date
8271 * with a comma inside. We have to live with this because
8272 * many browsers don't support Max-Age and some browsers don't
8273 * support quoted strings. However the Set-Cookie2 header is
8274 * clean.
8275 *
8276 * We have to keep multiple pointers in order to support cookie
8277 * removal at the beginning, middle or end of header without
8278 * corrupting the header (in case of set-cookie2). A special
8279 * pointer, <scav> points to the beginning of the set-cookie-av
8280 * fields after the first semi-colon. The <next> pointer points
8281 * either to the end of line (set-cookie) or next unquoted comma
8282 * (set-cookie2). All of these headers are valid :
8283 *
8284 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
8285 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8286 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8287 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
8288 * | | | | | | | | | |
8289 * | | | | | | | | +-> next hdr_end <--+
8290 * | | | | | | | +------------> scav
8291 * | | | | | | +--------------> val_end
8292 * | | | | | +--------------------> val_beg
8293 * | | | | +----------------------> equal
8294 * | | | +------------------------> att_end
8295 * | | +----------------------------> att_beg
8296 * | +------------------------------> prev
8297 * +-----------------------------------------> hdr_beg
8298 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8299
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8300 for (; prev < hdr_end; prev = next) {
8301 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8302
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8303 /* find att_beg */
8304 att_beg = prev + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]8305 while (att_beg < hdr_end && HTTP_IS_SPHT(*att_beg))
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8306 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8307
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8308 /* find att_end : this is the first character after the last non
8309 * space before the equal. It may be equal to hdr_end.
8310 */
8311 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8312
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8313 while (equal < hdr_end) {
8314 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
8315 break;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]8316 if (HTTP_IS_SPHT(*equal++))
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8317 continue;
8318 att_end = equal;
8319 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8320
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8321 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8322 * is between <att_beg> and <equal>, both may be identical.
8323 */
8324
8325 /* look for end of cookie if there is an equal sign */
8326 if (equal < hdr_end && *equal == '=') {
8327 /* look for the beginning of the value */
8328 val_beg = equal + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]8329 while (val_beg < hdr_end && HTTP_IS_SPHT(*val_beg))
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8330 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8331
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8332 /* find the end of the value, respecting quotes */
8333 next = find_cookie_value_end(val_beg, hdr_end);
8334
8335 /* make val_end point to the first white space or delimitor after the value */
8336 val_end = next;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]8337 while (val_end > val_beg && HTTP_IS_SPHT(*(val_end - 1)))
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8338 val_end--;
8339 } else {
8340 /* <equal> points to next comma, semi-colon or EOL */
8341 val_beg = val_end = next = equal;
8342 }
8343
8344 if (next < hdr_end) {
8345 /* Set-Cookie2 supports multiple cookies, and <next> points to
8346 * a colon or semi-colon before the end. So skip all attr-value
8347 * pairs and look for the next comma. For Set-Cookie, since
8348 * commas are permitted in values, skip to the end.
8349 */
8350 if (is_cookie2)
8351 next = find_hdr_value_end(next, hdr_end);
8352 else
8353 next = hdr_end;
8354 }
8355
8356 /* Now everything is as on the diagram above */
8357
8358 /* Ignore cookies with no equal sign */
8359 if (equal == val_end)
8360 continue;
8361
8362 /* If there are spaces around the equal sign, we need to
8363 * strip them otherwise we'll get trouble for cookie captures,
8364 * or even for rewrites. Since this happens extremely rarely,
8365 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8366 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8367 if (unlikely(att_end != equal || val_beg > equal + 1)) {
8368 int stripped_before = 0;
8369 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8370
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8371 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8372 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8373 equal += stripped_before;
8374 val_beg += stripped_before;
8375 }
8376
8377 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8378 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8379 val_beg += stripped_after;
8380 stripped_before += stripped_after;
8381 }
8382
8383 val_end += stripped_before;
8384 next += stripped_before;
8385 hdr_end += stripped_before;
8386 hdr_next += stripped_before;
8387 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]8388 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8389 }
8390
8391 /* First, let's see if we want to capture this cookie. We check
8392 * that we don't already have a server side cookie, because we
8393 * can only capture one. Also as an optimisation, we ignore
8394 * cookies shorter than the declared name.
8395 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8396 if (sess->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]8397 txn->srv_cookie == NULL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8398 (val_end - att_beg >= sess->fe->capture_namelen) &&
8399 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8400 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]8401 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8402 Alert("HTTP logging : out of memory.\n");
8403 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8404 else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8405 if (log_len > sess->fe->capture_len)
8406 log_len = sess->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8407 memcpy(txn->srv_cookie, att_beg, log_len);
8408 txn->srv_cookie[log_len] = 0;
8409 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8410 }
8411
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8412 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8413 /* now check if we need to process it for persistence */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8414 if (!(s->flags & SF_IGNORE_PRST) &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8415 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
8416 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8417 /* assume passive cookie by default */
8418 txn->flags &= ~TX_SCK_MASK;
8419 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8420
8421 /* If the cookie is in insert mode on a known server, we'll delete
8422 * this occurrence because we'll insert another one later.
8423 * 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]8424 * a direct access.
8425 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8426 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]8427 /* The "preserve" flag was set, we don't want to touch the
8428 * server's cookie.
8429 */
8430 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8431 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8432 ((s->flags & SF_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8433 /* this cookie must be deleted */
8434 if (*prev == ':' && next == hdr_end) {
8435 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8436 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8437 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8438 txn->hdr_idx.used--;
8439 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8440 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8441 hdr_next += delta;
8442 http_msg_move_end(&txn->rsp, delta);
8443 /* note: while both invalid now, <next> and <hdr_end>
8444 * are still equal, so the for() will stop as expected.
8445 */
8446 } else {
8447 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8448 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8449 next = prev;
8450 hdr_end += delta;
8451 hdr_next += delta;
8452 cur_hdr->len += delta;
8453 http_msg_move_end(&txn->rsp, delta);
8454 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8455 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8456 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8457 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8458 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8459 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8460 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8461 * with this server since we know it.
8462 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8463 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8464 next += delta;
8465 hdr_end += delta;
8466 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8467 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8468 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8469
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8470 txn->flags &= ~TX_SCK_MASK;
8471 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8472 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8473 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8474 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8475 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8476 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8477 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8478 next += delta;
8479 hdr_end += delta;
8480 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8481 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8482 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8483
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8484 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8485 txn->flags &= ~TX_SCK_MASK;
8486 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8487 }
8488 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8489 /* that's done for this cookie, check the next one on the same
8490 * line when next != hdr_end (only if is_cookie2).
8491 */
8492 }
8493 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8494 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8495 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8496}
8497
8498
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8499/*
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8500 * Check if response is cacheable or not. Updates s->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8501 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8502void check_response_for_cacheability(struct stream *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8503{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8504 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8505 char *p1, *p2;
8506
8507 char *cur_ptr, *cur_end, *cur_next;
8508 int cur_idx;
8509
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]8510 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8511 return;
8512
8513 /* Iterate through the headers.
8514 * we start with the start line.
8515 */
8516 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8517 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8518
8519 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
8520 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8521 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8522
8523 cur_hdr = &txn->hdr_idx.v[cur_idx];
8524 cur_ptr = cur_next;
8525 cur_end = cur_ptr + cur_hdr->len;
8526 cur_next = cur_end + cur_hdr->cr + 1;
8527
8528 /* We have one full header between cur_ptr and cur_end, and the
8529 * next header starts at cur_next. We're only interested in
8530 * "Cookie:" headers.
8531 */
8532
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8533 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
8534 if (val) {
8535 if ((cur_end - (cur_ptr + val) >= 8) &&
8536 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
8537 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
8538 return;
8539 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8540 }
8541
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8542 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
8543 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8544 continue;
8545
8546 /* OK, right now we know we have a cache-control header at cur_ptr */
8547
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8548 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8549
8550 if (p1 >= cur_end) /* no more info */
8551 continue;
8552
8553 /* p1 is at the beginning of the value */
8554 p2 = p1;
8555
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]8556 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8557 p2++;
8558
8559 /* we have a complete value between p1 and p2 */
8560 if (p2 < cur_end && *p2 == '=') {
8561 /* we have something of the form no-cache="set-cookie" */
8562 if ((cur_end - p1 >= 21) &&
8563 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
8564 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8565 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8566 continue;
8567 }
8568
8569 /* OK, so we know that either p2 points to the end of string or to a comma */
8570 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8571 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8572 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8573 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8574 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8575 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8576 return;
8577 }
8578
8579 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8580 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8581 continue;
8582 }
8583 }
8584}
8585
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8586
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8587/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8588 * 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]8589 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8590 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8591 * 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]8592 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8593 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8594 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8595 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8596int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8597{
8598 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8599 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8600 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8601
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8602 if (!uri_auth)
8603 return 0;
8604
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8605 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]8606 return 0;
8607
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8608 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8609 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8610 return 0;
8611
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8612 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8613 return 0;
8614
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8615 return 1;
8616}
8617
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8618/*
8619 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8620 * By default it tries to report the error position as msg->err_pos. However if
8621 * this one is not set, it will then report msg->next, which is the last known
8622 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8623 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8624 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8625void http_capture_bad_message(struct error_snapshot *es, struct stream *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8626 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8627 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8628{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8629 struct session *sess = strm_sess(s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8630 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8631 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8632
Willy Tarreauf3764b72016-03-31 13:45:10 +0200[diff] [blame]8633 es->len = MIN(chn->buf->i, global.tune.bufsize);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8634 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8635 len1 = MIN(len1, es->len);
8636 len2 = es->len - len1; /* remaining data if buffer wraps */
8637
Willy Tarreauf3764b72016-03-31 13:45:10 +0200[diff] [blame]8638 if (!es->buf)
8639 es->buf = malloc(global.tune.bufsize);
8640
8641 if (es->buf) {
8642 memcpy(es->buf, chn->buf->p, len1);
8643 if (len2)
8644 memcpy(es->buf + len1, chn->buf->data, len2);
8645 }
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8646
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8647 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8648 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8649 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8650 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8651
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8652 es->when = date; // user-visible date
8653 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8654 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8655 es->oe = other_end;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8656 if (objt_conn(sess->origin))
8657 es->src = __objt_conn(sess->origin)->addr.from;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8658 else
8659 memset(&es->src, 0, sizeof(es->src));
8660
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8661 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8662 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8663 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8664 es->s_flags = s->flags;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8665 es->t_flags = s->txn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8666 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8667 es->b_out = chn->buf->o;
8668 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8669 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8670 es->m_clen = msg->chunk_len;
8671 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8672}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8673
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8674/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8675 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8676 * performed over the whole headers. Otherwise it must contain a valid header
8677 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8678 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8679 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8680 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8681 * -1. The value fetch stops at commas, so this function is suited for use with
8682 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8683 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8684 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8685unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8686 struct hdr_idx *idx, int occ,
8687 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8688{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8689 struct hdr_ctx local_ctx;
8690 char *ptr_hist[MAX_HDR_HISTORY];
8691 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8692 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8693 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8694
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8695 if (!ctx) {
8696 local_ctx.idx = 0;
8697 ctx = &local_ctx;
8698 }
8699
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8700 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8701 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8702 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8703 occ--;
8704 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8705 *vptr = ctx->line + ctx->val;
8706 *vlen = ctx->vlen;
8707 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8708 }
8709 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8710 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8711 }
8712
8713 /* negative occurrence, we scan all the list then walk back */
8714 if (-occ > MAX_HDR_HISTORY)
8715 return 0;
8716
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8717 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8718 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8719 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8720 len_hist[hist_ptr] = ctx->vlen;
8721 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8722 hist_ptr = 0;
8723 found++;
8724 }
8725 if (-occ > found)
8726 return 0;
8727 /* 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]8728 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8729 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8730 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8731 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8732 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8733 if (hist_ptr >= MAX_HDR_HISTORY)
8734 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8735 *vptr = ptr_hist[hist_ptr];
8736 *vlen = len_hist[hist_ptr];
8737 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8738}
8739
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8740/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8741 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8742 * performed over the whole headers. Otherwise it must contain a valid header
8743 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8744 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8745 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8746 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8747 * -1. This function differs from http_get_hdr() in that it only returns full
8748 * line header values and does not stop at commas.
8749 * The return value is 0 if nothing was found, or non-zero otherwise.
8750 */
8751unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8752 struct hdr_idx *idx, int occ,
8753 struct hdr_ctx *ctx, char **vptr, int *vlen)
8754{
8755 struct hdr_ctx local_ctx;
8756 char *ptr_hist[MAX_HDR_HISTORY];
8757 int len_hist[MAX_HDR_HISTORY];
8758 unsigned int hist_ptr;
8759 int found;
8760
8761 if (!ctx) {
8762 local_ctx.idx = 0;
8763 ctx = &local_ctx;
8764 }
8765
8766 if (occ >= 0) {
8767 /* search from the beginning */
8768 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8769 occ--;
8770 if (occ <= 0) {
8771 *vptr = ctx->line + ctx->val;
8772 *vlen = ctx->vlen;
8773 return 1;
8774 }
8775 }
8776 return 0;
8777 }
8778
8779 /* negative occurrence, we scan all the list then walk back */
8780 if (-occ > MAX_HDR_HISTORY)
8781 return 0;
8782
8783 found = hist_ptr = 0;
8784 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8785 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8786 len_hist[hist_ptr] = ctx->vlen;
8787 if (++hist_ptr >= MAX_HDR_HISTORY)
8788 hist_ptr = 0;
8789 found++;
8790 }
8791 if (-occ > found)
8792 return 0;
Nenad Merdanovic69ad4b92016-03-29 13:14:30 +0200[diff] [blame]8793
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8794 /* 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]8795 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8796 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8797 * to remain in the 0..9 range.
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8798 */
Nenad Merdanovic69ad4b92016-03-29 13:14:30 +0200[diff] [blame]8799 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8800 if (hist_ptr >= MAX_HDR_HISTORY)
8801 hist_ptr -= MAX_HDR_HISTORY;
8802 *vptr = ptr_hist[hist_ptr];
8803 *vlen = len_hist[hist_ptr];
8804 return 1;
8805}
8806
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8807/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8808 * Print a debug line with a header. Always stop at the first CR or LF char,
8809 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8810 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8811 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8812void debug_hdr(const char *dir, struct stream *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8813{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8814 struct session *sess = strm_sess(s);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8815 int max;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8816
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8817 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8818 dir,
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8819 objt_conn(sess->origin) ? (unsigned short)objt_conn(sess->origin)->t.sock.fd : -1,
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]8820 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]8821
8822 for (max = 0; start + max < end; max++)
8823 if (start[max] == '\r' || start[max] == '\n')
8824 break;
8825
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8826 UBOUND(max, trash.size - trash.len - 3);
8827 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8828 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8829 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8830}
8831
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8832
8833/* Allocate a new HTTP transaction for stream <s> unless there is one already.
8834 * The hdr_idx is allocated as well. In case of allocation failure, everything
8835 * allocated is freed and NULL is returned. Otherwise the new transaction is
8836 * assigned to the stream and returned.
8837 */
8838struct http_txn *http_alloc_txn(struct stream *s)
8839{
8840 struct http_txn *txn = s->txn;
8841
8842 if (txn)
8843 return txn;
8844
8845 txn = pool_alloc2(pool2_http_txn);
8846 if (!txn)
8847 return txn;
8848
8849 txn->hdr_idx.size = global.tune.max_http_hdr;
8850 txn->hdr_idx.v = pool_alloc2(pool2_hdr_idx);
8851 if (!txn->hdr_idx.v) {
8852 pool_free2(pool2_http_txn, txn);
8853 return NULL;
8854 }
8855
8856 s->txn = txn;
8857 return txn;
8858}
8859
Thierry FOURNIERfd50f0b2015-09-25 18:53:18 +0200[diff] [blame]8860void http_txn_reset_req(struct http_txn *txn)
8861{
8862 txn->req.flags = 0;
8863 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
8864 txn->req.next = 0;
8865 txn->req.chunk_len = 0LL;
8866 txn->req.body_len = 0LL;
8867 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8868}
8869
8870void http_txn_reset_res(struct http_txn *txn)
8871{
8872 txn->rsp.flags = 0;
8873 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
8874 txn->rsp.next = 0;
8875 txn->rsp.chunk_len = 0LL;
8876 txn->rsp.body_len = 0LL;
8877 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
8878}
8879
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8880/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8881 * Initialize a new HTTP transaction for stream <s>. It is assumed that all
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8882 * the required fields are properly allocated and that we only need to (re)init
8883 * them. This should be used before processing any new request.
8884 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8885void http_init_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8886{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8887 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8888 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8889
8890 txn->flags = 0;
8891 txn->status = -1;
8892
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8893 txn->cookie_first_date = 0;
8894 txn->cookie_last_date = 0;
8895
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8896 txn->srv_cookie = NULL;
8897 txn->cli_cookie = NULL;
8898 txn->uri = NULL;
8899
Thierry FOURNIERfd50f0b2015-09-25 18:53:18 +0200[diff] [blame]8900 http_txn_reset_req(txn);
8901 http_txn_reset_res(txn);
8902
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8903 txn->req.chn = &s->req;
8904 txn->rsp.chn = &s->res;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8905
8906 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8907
8908 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8909 if (fe->options2 & PR_O2_REQBUG_OK)
8910 txn->req.err_pos = -1; /* let buggy requests pass */
8911
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8912 if (txn->hdr_idx.v)
8913 hdr_idx_init(&txn->hdr_idx);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]8914
8915 vars_init(&s->vars_txn, SCOPE_TXN);
8916 vars_init(&s->vars_reqres, SCOPE_REQ);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8917}
8918
8919/* to be used at the end of a transaction */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8920void http_end_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8921{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8922 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8923 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8924
8925 /* these ones will have been dynamically allocated */
8926 pool_free2(pool2_requri, txn->uri);
8927 pool_free2(pool2_capture, txn->cli_cookie);
8928 pool_free2(pool2_capture, txn->srv_cookie);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8929 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8930
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8931 s->unique_id = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8932 txn->uri = NULL;
8933 txn->srv_cookie = NULL;
8934 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8935
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8936 if (s->req_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8937 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8938 for (h = fe->req_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8939 pool_free2(h->pool, s->req_cap[h->index]);
8940 memset(s->req_cap, 0, fe->nb_req_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8941 }
8942
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8943 if (s->res_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8944 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8945 for (h = fe->rsp_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8946 pool_free2(h->pool, s->res_cap[h->index]);
8947 memset(s->res_cap, 0, fe->nb_rsp_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8948 }
8949
Willy Tarreau6204cd92016-03-10 16:33:04 +0100[diff] [blame]8950 vars_prune(&s->vars_txn, s->sess, s);
8951 vars_prune(&s->vars_reqres, s->sess, s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8952}
8953
8954/* to be used at the end of a transaction to prepare a new one */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8955void http_reset_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8956{
8957 http_end_txn(s);
8958 http_init_txn(s);
8959
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]8960 /* reinitialise the current rule list pointer to NULL. We are sure that
8961 * any rulelist match the NULL pointer.
8962 */
8963 s->current_rule_list = NULL;
8964
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8965 s->be = strm_fe(s);
8966 s->logs.logwait = strm_fe(s)->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8967 s->logs.level = 0;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8968 stream_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8969 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8970 /* re-init store persistence */
8971 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]8972 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8973
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8974 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8975
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8976 s->req.flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8977
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8978 /* We must trim any excess data from the response buffer, because we
8979 * may have blocked an invalid response from a server that we don't
8980 * want to accidentely forward once we disable the analysers, nor do
8981 * we want those data to come along with next response. A typical
8982 * example of such data would be from a buggy server responding to
8983 * a HEAD with some data, or sending more than the advertised
8984 * content-length.
8985 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8986 if (unlikely(s->res.buf->i))
8987 s->res.buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8988
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8989 s->req.rto = strm_fe(s)->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8990 s->req.wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8991
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8992 s->res.rto = TICK_ETERNITY;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8993 s->res.wto = strm_fe(s)->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8994
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8995 s->req.rex = TICK_ETERNITY;
8996 s->req.wex = TICK_ETERNITY;
8997 s->req.analyse_exp = TICK_ETERNITY;
8998 s->res.rex = TICK_ETERNITY;
8999 s->res.wex = TICK_ETERNITY;
9000 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9001}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]9002
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9003void free_http_res_rules(struct list *r)
9004{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9005 struct act_rule *tr, *pr;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9006
9007 list_for_each_entry_safe(pr, tr, r, list) {
9008 LIST_DEL(&pr->list);
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9009 regex_free(&pr->arg.hdr_add.re);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9010 free(pr);
9011 }
9012}
9013
9014void free_http_req_rules(struct list *r)
9015{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9016 struct act_rule *tr, *pr;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9017
9018 list_for_each_entry_safe(pr, tr, r, list) {
9019 LIST_DEL(&pr->list);
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9020 if (pr->action == ACT_HTTP_REQ_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9021 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9022
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9023 regex_free(&pr->arg.hdr_add.re);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9024 free(pr);
9025 }
9026}
9027
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9028/* parse an "http-request" rule */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9029struct 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]9030{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9031 struct act_rule *rule;
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]9032 struct action_kw *custom = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9033 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9034 char *error;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9035
Vincent Bernat02779b62016-04-03 13:48:43 +0200[diff] [blame]9036 rule = calloc(1, sizeof(*rule));
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9037 if (!rule) {
9038 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9039 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9040 }
9041
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9042 rule->deny_status = HTTP_ERR_403;
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9043 if (!strcmp(args[0], "allow")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9044 rule->action = ACT_ACTION_ALLOW;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9045 cur_arg = 1;
Willy Tarreau5bd67592014-04-28 22:00:46 +0200[diff] [blame]9046 } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block")) {
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9047 int code;
9048 int hc;
9049
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9050 rule->action = ACT_ACTION_DENY;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9051 cur_arg = 1;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9052 if (strcmp(args[cur_arg], "deny_status") == 0) {
9053 cur_arg++;
9054 if (!args[cur_arg]) {
9055 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing status code.\n",
9056 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9057 goto out_err;
9058 }
9059
9060 code = atol(args[cur_arg]);
9061 cur_arg++;
9062 for (hc = 0; hc < HTTP_ERR_SIZE; hc++) {
9063 if (http_err_codes[hc] == code) {
9064 rule->deny_status = hc;
9065 break;
9066 }
9067 }
9068
9069 if (hc >= HTTP_ERR_SIZE) {
9070 Warning("parsing [%s:%d] : status code %d not handled, using default code 403.\n",
9071 file, linenum, code);
9072 }
9073 }
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]9074 } else if (!strcmp(args[0], "tarpit")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9075 rule->action = ACT_HTTP_REQ_TARPIT;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]9076 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9077 } else if (!strcmp(args[0], "auth")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9078 rule->action = ACT_HTTP_REQ_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9079 cur_arg = 1;
9080
9081 while(*args[cur_arg]) {
9082 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9083 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9084 cur_arg+=2;
9085 continue;
9086 } else
9087 break;
9088 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9089 } else if (!strcmp(args[0], "set-nice")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9090 rule->action = ACT_HTTP_SET_NICE;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9091 cur_arg = 1;
9092
9093 if (!*args[cur_arg] ||
9094 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9095 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
9096 file, linenum, args[0]);
9097 goto out_err;
9098 }
9099 rule->arg.nice = atoi(args[cur_arg]);
9100 if (rule->arg.nice < -1024)
9101 rule->arg.nice = -1024;
9102 else if (rule->arg.nice > 1024)
9103 rule->arg.nice = 1024;
9104 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9105 } else if (!strcmp(args[0], "set-tos")) {
9106#ifdef IP_TOS
9107 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9108 rule->action = ACT_HTTP_SET_TOS;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9109 cur_arg = 1;
9110
9111 if (!*args[cur_arg] ||
9112 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9113 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
9114 file, linenum, args[0]);
9115 goto out_err;
9116 }
9117
9118 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9119 if (err && *err != '\0') {
9120 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
9121 file, linenum, err, args[0]);
9122 goto out_err;
9123 }
9124 cur_arg++;
9125#else
9126 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9127 goto out_err;
9128#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9129 } else if (!strcmp(args[0], "set-mark")) {
9130#ifdef SO_MARK
9131 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9132 rule->action = ACT_HTTP_SET_MARK;
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9133 cur_arg = 1;
9134
9135 if (!*args[cur_arg] ||
9136 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9137 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
9138 file, linenum, args[0]);
9139 goto out_err;
9140 }
9141
9142 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9143 if (err && *err != '\0') {
9144 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
9145 file, linenum, err, args[0]);
9146 goto out_err;
9147 }
9148 cur_arg++;
9149 global.last_checks |= LSTCHK_NETADM;
9150#else
9151 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9152 goto out_err;
9153#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9154 } else if (!strcmp(args[0], "set-log-level")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9155 rule->action = ACT_HTTP_SET_LOGL;
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9156 cur_arg = 1;
9157
9158 if (!*args[cur_arg] ||
9159 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9160 bad_log_level:
9161 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
9162 file, linenum, args[0]);
9163 goto out_err;
9164 }
9165 if (strcmp(args[cur_arg], "silent") == 0)
9166 rule->arg.loglevel = -1;
9167 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
9168 goto bad_log_level;
9169 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9170 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9171 rule->action = *args[0] == 'a' ? ACT_HTTP_ADD_HDR : ACT_HTTP_SET_HDR;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9172 cur_arg = 1;
9173
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]9174 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9175 (*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]9176 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9177 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9178 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9179 }
9180
9181 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9182 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9183 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]9184
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9185 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9186 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9187 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]9188 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9189 Alert("parsing [%s:%d]: 'http-request %s': %s.\n",
9190 file, linenum, args[0], error);
9191 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9192 goto out_err;
9193 }
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9194 free(proxy->conf.lfs_file);
9195 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9196 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9197 cur_arg += 2;
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9198 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9199 rule->action = args[0][8] == 'h' ? ACT_HTTP_REPLACE_HDR : ACT_HTTP_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9200 cur_arg = 1;
9201
9202 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann92df3702014-06-24 11:10:00 +0200[diff] [blame]9203 (*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]9204 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
9205 file, linenum, args[0]);
9206 goto out_err;
9207 }
9208
9209 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9210 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9211 LIST_INIT(&rule->arg.hdr_add.fmt);
9212
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9213 error = NULL;
9214 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9215 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9216 args[cur_arg + 1], error);
9217 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9218 goto out_err;
9219 }
9220
9221 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9222 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9223 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]9224 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9225 Alert("parsing [%s:%d]: 'http-request %s': %s.\n",
9226 file, linenum, args[0], error);
9227 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9228 goto out_err;
9229 }
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9230
9231 free(proxy->conf.lfs_file);
9232 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9233 proxy->conf.lfs_line = proxy->conf.args.line;
9234 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9235 } else if (strcmp(args[0], "del-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9236 rule->action = ACT_HTTP_DEL_HDR;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9237 cur_arg = 1;
9238
9239 if (!*args[cur_arg] ||
9240 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9241 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9242 file, linenum, args[0]);
9243 goto out_err;
9244 }
9245
9246 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9247 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9248
9249 proxy->conf.args.ctx = ARGC_HRQ;
9250 free(proxy->conf.lfs_file);
9251 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9252 proxy->conf.lfs_line = proxy->conf.args.line;
9253 cur_arg += 1;
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9254 } else if (strncmp(args[0], "track-sc", 8) == 0 &&
9255 args[0][9] == '\0' && args[0][8] >= '0' &&
Willy Tarreaue1cfc1f2014-10-17 11:53:05 +0200[diff] [blame]9256 args[0][8] < '0' + MAX_SESS_STKCTR) { /* track-sc 0..9 */
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9257 struct sample_expr *expr;
9258 unsigned int where;
9259 char *err = NULL;
9260
9261 cur_arg = 1;
9262 proxy->conf.args.ctx = ARGC_TRK;
9263
9264 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9265 if (!expr) {
9266 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9267 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9268 free(err);
9269 goto out_err;
9270 }
9271
9272 where = 0;
9273 if (proxy->cap & PR_CAP_FE)
9274 where |= SMP_VAL_FE_HRQ_HDR;
9275 if (proxy->cap & PR_CAP_BE)
9276 where |= SMP_VAL_BE_HRQ_HDR;
9277
9278 if (!(expr->fetch->val & where)) {
9279 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule :"
9280 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9281 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9282 args[cur_arg-1], sample_src_names(expr->fetch->use));
9283 free(expr);
9284 goto out_err;
9285 }
9286
9287 if (strcmp(args[cur_arg], "table") == 0) {
9288 cur_arg++;
9289 if (!args[cur_arg]) {
9290 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing table name.\n",
9291 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9292 free(expr);
9293 goto out_err;
9294 }
9295 /* we copy the table name for now, it will be resolved later */
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]9296 rule->arg.trk_ctr.table.n = strdup(args[cur_arg]);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9297 cur_arg++;
9298 }
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]9299 rule->arg.trk_ctr.expr = expr;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9300 rule->action = ACT_ACTION_TRK_SC0 + args[0][8] - '0';
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9301 } else if (strcmp(args[0], "redirect") == 0) {
9302 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]9303 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9304
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9305 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]9306 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9307 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9308 goto out_err;
9309 }
9310
9311 /* this redirect rule might already contain a parsed condition which
9312 * we'll pass to the http-request rule.
9313 */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9314 rule->action = ACT_HTTP_REDIR;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9315 rule->arg.redir = redir;
9316 rule->cond = redir->cond;
9317 redir->cond = NULL;
9318 cur_arg = 2;
9319 return rule;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9320 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9321 /* http-request add-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9322 rule->action = ACT_HTTP_ADD_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9323 /*
9324 * '+ 8' for 'add-acl('
9325 * '- 9' for 'add-acl(' + trailing ')'
9326 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9327 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9328
9329 cur_arg = 1;
9330
9331 if (!*args[cur_arg] ||
9332 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9333 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9334 file, linenum, args[0]);
9335 goto out_err;
9336 }
9337
9338 LIST_INIT(&rule->arg.map.key);
9339 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9340 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9341 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]9342 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9343 Alert("parsing [%s:%d]: 'http-request %s': %s.\n",
9344 file, linenum, args[0], error);
9345 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9346 goto out_err;
9347 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9348 free(proxy->conf.lfs_file);
9349 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9350 proxy->conf.lfs_line = proxy->conf.args.line;
9351 cur_arg += 1;
9352 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9353 /* http-request del-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9354 rule->action = ACT_HTTP_DEL_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9355 /*
9356 * '+ 8' for 'del-acl('
9357 * '- 9' for 'del-acl(' + trailing ')'
9358 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9359 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9360
9361 cur_arg = 1;
9362
9363 if (!*args[cur_arg] ||
9364 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9365 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9366 file, linenum, args[0]);
9367 goto out_err;
9368 }
9369
9370 LIST_INIT(&rule->arg.map.key);
9371 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9372 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9373 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]9374 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9375 Alert("parsing [%s:%d]: 'http-request %s': %s.\n",
9376 file, linenum, args[0], error);
9377 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9378 goto out_err;
9379 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9380 free(proxy->conf.lfs_file);
9381 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9382 proxy->conf.lfs_line = proxy->conf.args.line;
9383 cur_arg += 1;
9384 } else if (strncmp(args[0], "del-map", 7) == 0) {
9385 /* http-request del-map(<reference (map name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9386 rule->action = ACT_HTTP_DEL_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9387 /*
9388 * '+ 8' for 'del-map('
9389 * '- 9' for 'del-map(' + trailing ')'
9390 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9391 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9392
9393 cur_arg = 1;
9394
9395 if (!*args[cur_arg] ||
9396 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9397 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9398 file, linenum, args[0]);
9399 goto out_err;
9400 }
9401
9402 LIST_INIT(&rule->arg.map.key);
9403 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9404 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9405 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]9406 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9407 Alert("parsing [%s:%d]: 'http-request %s': %s.\n",
9408 file, linenum, args[0], error);
9409 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9410 goto out_err;
9411 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9412 free(proxy->conf.lfs_file);
9413 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9414 proxy->conf.lfs_line = proxy->conf.args.line;
9415 cur_arg += 1;
9416 } else if (strncmp(args[0], "set-map", 7) == 0) {
9417 /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9418 rule->action = ACT_HTTP_SET_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9419 /*
9420 * '+ 8' for 'set-map('
9421 * '- 9' for 'set-map(' + trailing ')'
9422 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9423 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9424
9425 cur_arg = 1;
9426
9427 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9428 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9429 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9430 file, linenum, args[0]);
9431 goto out_err;
9432 }
9433
9434 LIST_INIT(&rule->arg.map.key);
9435 LIST_INIT(&rule->arg.map.value);
9436 proxy->conf.args.ctx = ARGC_HRQ;
9437
9438 /* key pattern */
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9439 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9440 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]9441 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9442 Alert("parsing [%s:%d]: 'http-request %s' key: %s.\n",
9443 file, linenum, args[0], error);
9444 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9445 goto out_err;
9446 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9447
9448 /* value pattern */
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9449 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9450 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]9451 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9452 Alert("parsing [%s:%d]: 'http-request %s' pattern: %s.\n",
9453 file, linenum, args[0], error);
9454 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9455 goto out_err;
9456 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9457 free(proxy->conf.lfs_file);
9458 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9459 proxy->conf.lfs_line = proxy->conf.args.line;
9460
9461 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9462 } else if (((custom = action_http_req_custom(args[0])) != NULL)) {
9463 char *errmsg = NULL;
9464 cur_arg = 1;
9465 /* try in the module list */
Thierry FOURNIER5563e4b2015-08-14 19:20:07 +0200[diff] [blame]9466 rule->from = ACT_F_HTTP_REQ;
Thierry FOURNIER85c6c972015-09-22 19:14:35 +0200[diff] [blame]9467 rule->kw = custom;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]9468 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) == ACT_RET_PRS_ERR) {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9469 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9470 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9471 free(errmsg);
9472 goto out_err;
9473 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9474 } else {
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9475 action_build_list(&http_req_keywords.list, &trash);
9476 Alert("parsing [%s:%d]: 'http-request' expects 'allow', 'deny', 'auth', 'redirect', "
9477 "'tarpit', 'add-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', "
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]9478 "'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]9479 "%s%s, but got '%s'%s.\n",
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9480 file, linenum, *trash.str ? ", " : "", trash.str, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9481 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9482 }
9483
9484 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9485 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9486 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9487
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9488 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9489 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
9490 file, linenum, args[0], errmsg);
9491 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9492 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9493 }
9494 rule->cond = cond;
9495 }
9496 else if (*args[cur_arg]) {
9497 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
9498 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9499 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9500 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9501 }
9502
9503 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9504 out_err:
9505 free(rule);
9506 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9507}
9508
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9509/* parse an "http-respose" rule */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9510struct 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]9511{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9512 struct act_rule *rule;
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]9513 struct action_kw *custom = NULL;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9514 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9515 char *error;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9516
9517 rule = calloc(1, sizeof(*rule));
9518 if (!rule) {
9519 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
9520 goto out_err;
9521 }
9522
9523 if (!strcmp(args[0], "allow")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9524 rule->action = ACT_ACTION_ALLOW;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9525 cur_arg = 1;
9526 } else if (!strcmp(args[0], "deny")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9527 rule->action = ACT_ACTION_DENY;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9528 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9529 } else if (!strcmp(args[0], "set-nice")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9530 rule->action = ACT_HTTP_SET_NICE;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9531 cur_arg = 1;
9532
9533 if (!*args[cur_arg] ||
9534 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9535 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
9536 file, linenum, args[0]);
9537 goto out_err;
9538 }
9539 rule->arg.nice = atoi(args[cur_arg]);
9540 if (rule->arg.nice < -1024)
9541 rule->arg.nice = -1024;
9542 else if (rule->arg.nice > 1024)
9543 rule->arg.nice = 1024;
9544 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9545 } else if (!strcmp(args[0], "set-tos")) {
9546#ifdef IP_TOS
9547 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9548 rule->action = ACT_HTTP_SET_TOS;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9549 cur_arg = 1;
9550
9551 if (!*args[cur_arg] ||
9552 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9553 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9554 file, linenum, args[0]);
9555 goto out_err;
9556 }
9557
9558 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9559 if (err && *err != '\0') {
9560 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9561 file, linenum, err, args[0]);
9562 goto out_err;
9563 }
9564 cur_arg++;
9565#else
9566 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9567 goto out_err;
9568#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9569 } else if (!strcmp(args[0], "set-mark")) {
9570#ifdef SO_MARK
9571 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9572 rule->action = ACT_HTTP_SET_MARK;
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9573 cur_arg = 1;
9574
9575 if (!*args[cur_arg] ||
9576 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9577 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9578 file, linenum, args[0]);
9579 goto out_err;
9580 }
9581
9582 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9583 if (err && *err != '\0') {
9584 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9585 file, linenum, err, args[0]);
9586 goto out_err;
9587 }
9588 cur_arg++;
9589 global.last_checks |= LSTCHK_NETADM;
9590#else
9591 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9592 goto out_err;
9593#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9594 } else if (!strcmp(args[0], "set-log-level")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9595 rule->action = ACT_HTTP_SET_LOGL;
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9596 cur_arg = 1;
9597
9598 if (!*args[cur_arg] ||
9599 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9600 bad_log_level:
9601 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
9602 file, linenum, args[0]);
9603 goto out_err;
9604 }
9605 if (strcmp(args[cur_arg], "silent") == 0)
9606 rule->arg.loglevel = -1;
Ruoshan Huangdd016782016-06-15 22:16:03 +0800[diff] [blame]9607 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9608 goto bad_log_level;
9609 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9610 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9611 rule->action = *args[0] == 'a' ? ACT_HTTP_ADD_HDR : ACT_HTTP_SET_HDR;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9612 cur_arg = 1;
9613
9614 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9615 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9616 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9617 file, linenum, args[0]);
9618 goto out_err;
9619 }
9620
9621 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9622 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9623 LIST_INIT(&rule->arg.hdr_add.fmt);
9624
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9625 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9626 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9627 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]9628 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9629 Alert("parsing [%s:%d]: 'http-response %s': %s.\n",
9630 file, linenum, args[0], error);
9631 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9632 goto out_err;
9633 }
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9634 free(proxy->conf.lfs_file);
9635 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9636 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9637 cur_arg += 2;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9638 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9639 rule->action = args[0][8] == 'h' ? ACT_HTTP_REPLACE_HDR : ACT_HTTP_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9640 cur_arg = 1;
9641
9642 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann12cb00b2014-08-08 17:29:06 +0200[diff] [blame]9643 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
9644 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 3 arguments.\n",
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9645 file, linenum, args[0]);
9646 goto out_err;
9647 }
9648
9649 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9650 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9651 LIST_INIT(&rule->arg.hdr_add.fmt);
9652
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9653 error = NULL;
9654 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9655 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9656 args[cur_arg + 1], error);
9657 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9658 goto out_err;
9659 }
9660
9661 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9662 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9663 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]9664 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9665 Alert("parsing [%s:%d]: 'http-response %s': %s.\n",
9666 file, linenum, args[0], error);
9667 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9668 goto out_err;
9669 }
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9670
9671 free(proxy->conf.lfs_file);
9672 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9673 proxy->conf.lfs_line = proxy->conf.args.line;
9674 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9675 } else if (strcmp(args[0], "del-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9676 rule->action = ACT_HTTP_DEL_HDR;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9677 cur_arg = 1;
9678
9679 if (!*args[cur_arg] ||
9680 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9681 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9682 file, linenum, args[0]);
9683 goto out_err;
9684 }
9685
9686 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9687 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9688
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9689 proxy->conf.args.ctx = ARGC_HRS;
9690 free(proxy->conf.lfs_file);
9691 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9692 proxy->conf.lfs_line = proxy->conf.args.line;
9693 cur_arg += 1;
9694 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9695 /* http-request add-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9696 rule->action = ACT_HTTP_ADD_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9697 /*
9698 * '+ 8' for 'add-acl('
9699 * '- 9' for 'add-acl(' + trailing ')'
9700 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9701 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9702
9703 cur_arg = 1;
9704
9705 if (!*args[cur_arg] ||
9706 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9707 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9708 file, linenum, args[0]);
9709 goto out_err;
9710 }
9711
9712 LIST_INIT(&rule->arg.map.key);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9713 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9714 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9715 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]9716 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9717 Alert("parsing [%s:%d]: 'http-response %s': %s.\n",
9718 file, linenum, args[0], error);
9719 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9720 goto out_err;
9721 }
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9722 free(proxy->conf.lfs_file);
9723 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9724 proxy->conf.lfs_line = proxy->conf.args.line;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9725
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9726 cur_arg += 1;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9727 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9728 /* http-response del-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9729 rule->action = ACT_HTTP_DEL_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9730 /*
9731 * '+ 8' for 'del-acl('
9732 * '- 9' for 'del-acl(' + trailing ')'
9733 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9734 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9735
9736 cur_arg = 1;
9737
9738 if (!*args[cur_arg] ||
9739 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9740 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9741 file, linenum, args[0]);
9742 goto out_err;
9743 }
9744
9745 LIST_INIT(&rule->arg.map.key);
9746 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9747 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9748 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]9749 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9750 Alert("parsing [%s:%d]: 'http-response %s': %s.\n",
9751 file, linenum, args[0], error);
9752 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9753 goto out_err;
9754 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9755 free(proxy->conf.lfs_file);
9756 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9757 proxy->conf.lfs_line = proxy->conf.args.line;
9758 cur_arg += 1;
9759 } else if (strncmp(args[0], "del-map", 7) == 0) {
9760 /* http-response del-map(<reference (map name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9761 rule->action = ACT_HTTP_DEL_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9762 /*
9763 * '+ 8' for 'del-map('
9764 * '- 9' for 'del-map(' + trailing ')'
9765 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9766 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9767
9768 cur_arg = 1;
9769
9770 if (!*args[cur_arg] ||
9771 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9772 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9773 file, linenum, args[0]);
9774 goto out_err;
9775 }
9776
9777 LIST_INIT(&rule->arg.map.key);
9778 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9779 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9780 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]9781 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9782 Alert("parsing [%s:%d]: 'http-response %s' %s.\n",
9783 file, linenum, args[0], error);
9784 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9785 goto out_err;
9786 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9787 free(proxy->conf.lfs_file);
9788 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9789 proxy->conf.lfs_line = proxy->conf.args.line;
9790 cur_arg += 1;
9791 } else if (strncmp(args[0], "set-map", 7) == 0) {
9792 /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9793 rule->action = ACT_HTTP_SET_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9794 /*
9795 * '+ 8' for 'set-map('
9796 * '- 9' for 'set-map(' + trailing ')'
9797 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9798 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9799
9800 cur_arg = 1;
9801
9802 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9803 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9804 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9805 file, linenum, args[0]);
9806 goto out_err;
9807 }
9808
9809 LIST_INIT(&rule->arg.map.key);
9810 LIST_INIT(&rule->arg.map.value);
9811
9812 proxy->conf.args.ctx = ARGC_HRS;
9813
9814 /* key pattern */
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9815 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9816 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]9817 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9818 Alert("parsing [%s:%d]: 'http-response %s' name: %s.\n",
9819 file, linenum, args[0], error);
9820 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9821 goto out_err;
9822 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9823
9824 /* value pattern */
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9825 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9826 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]9827 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9828 Alert("parsing [%s:%d]: 'http-response %s' value: %s.\n",
9829 file, linenum, args[0], error);
9830 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9831 goto out_err;
9832 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9833
9834 free(proxy->conf.lfs_file);
9835 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9836 proxy->conf.lfs_line = proxy->conf.args.line;
9837
9838 cur_arg += 2;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]9839 } else if (strcmp(args[0], "redirect") == 0) {
9840 struct redirect_rule *redir;
9841 char *errmsg = NULL;
9842
9843 if ((redir = http_parse_redirect_rule(file, linenum, proxy, (const char **)args + 1, &errmsg, 1, 1)) == NULL) {
9844 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9845 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9846 goto out_err;
9847 }
9848
9849 /* this redirect rule might already contain a parsed condition which
9850 * we'll pass to the http-request rule.
9851 */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9852 rule->action = ACT_HTTP_REDIR;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]9853 rule->arg.redir = redir;
9854 rule->cond = redir->cond;
9855 redir->cond = NULL;
9856 cur_arg = 2;
9857 return rule;
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]9858 } else if (strncmp(args[0], "track-sc", 8) == 0 &&
9859 args[0][9] == '\0' && args[0][8] >= '0' &&
9860 args[0][8] < '0' + MAX_SESS_STKCTR) { /* track-sc 0..9 */
9861 struct sample_expr *expr;
9862 unsigned int where;
9863 char *err = NULL;
9864
9865 cur_arg = 1;
9866 proxy->conf.args.ctx = ARGC_TRK;
9867
9868 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9869 if (!expr) {
9870 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9871 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9872 free(err);
9873 goto out_err;
9874 }
9875
9876 where = 0;
9877 if (proxy->cap & PR_CAP_FE)
9878 where |= SMP_VAL_FE_HRS_HDR;
9879 if (proxy->cap & PR_CAP_BE)
9880 where |= SMP_VAL_BE_HRS_HDR;
9881
9882 if (!(expr->fetch->val & where)) {
9883 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule :"
9884 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9885 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9886 args[cur_arg-1], sample_src_names(expr->fetch->use));
9887 free(expr);
9888 goto out_err;
9889 }
9890
9891 if (strcmp(args[cur_arg], "table") == 0) {
9892 cur_arg++;
9893 if (!args[cur_arg]) {
9894 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : missing table name.\n",
9895 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9896 free(expr);
9897 goto out_err;
9898 }
9899 /* we copy the table name for now, it will be resolved later */
9900 rule->arg.trk_ctr.table.n = strdup(args[cur_arg]);
9901 cur_arg++;
9902 }
9903 rule->arg.trk_ctr.expr = expr;
9904 rule->action = ACT_ACTION_TRK_SC0 + args[0][8] - '0';
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9905 } else if (((custom = action_http_res_custom(args[0])) != NULL)) {
9906 char *errmsg = NULL;
9907 cur_arg = 1;
9908 /* try in the module list */
Thierry FOURNIER5563e4b2015-08-14 19:20:07 +0200[diff] [blame]9909 rule->from = ACT_F_HTTP_RES;
Thierry FOURNIER85c6c972015-09-22 19:14:35 +0200[diff] [blame]9910 rule->kw = custom;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]9911 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) == ACT_RET_PRS_ERR) {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9912 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9913 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9914 free(errmsg);
9915 goto out_err;
9916 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9917 } else {
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9918 action_build_list(&http_res_keywords.list, &trash);
9919 Alert("parsing [%s:%d]: 'http-response' expects 'allow', 'deny', 'redirect', "
9920 "'add-header', 'del-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', "
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]9921 "'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]9922 "%s%s, but got '%s'%s.\n",
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9923 file, linenum, *trash.str ? ", " : "", trash.str, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9924 goto out_err;
9925 }
9926
9927 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9928 struct acl_cond *cond;
9929 char *errmsg = NULL;
9930
9931 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9932 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
9933 file, linenum, args[0], errmsg);
9934 free(errmsg);
9935 goto out_err;
9936 }
9937 rule->cond = cond;
9938 }
9939 else if (*args[cur_arg]) {
9940 Alert("parsing [%s:%d]: 'http-response %s' expects"
9941 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9942 file, linenum, args[0], args[cur_arg]);
9943 goto out_err;
9944 }
9945
9946 return rule;
9947 out_err:
9948 free(rule);
9949 return NULL;
9950}
9951
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9952/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9953 * 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]9954 * dynamic log-format rule instead of a static string. Parameter <dir> indicates
9955 * the direction of the rule, and equals 0 for request, non-zero for responses.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9956 */
9957struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9958 const char **args, char **errmsg, int use_fmt, int dir)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9959{
9960 struct redirect_rule *rule;
9961 int cur_arg;
9962 int type = REDIRECT_TYPE_NONE;
9963 int code = 302;
9964 const char *destination = NULL;
9965 const char *cookie = NULL;
9966 int cookie_set = 0;
9967 unsigned int flags = REDIRECT_FLAG_NONE;
9968 struct acl_cond *cond = NULL;
9969
9970 cur_arg = 0;
9971 while (*(args[cur_arg])) {
9972 if (strcmp(args[cur_arg], "location") == 0) {
9973 if (!*args[cur_arg + 1])
9974 goto missing_arg;
9975
9976 type = REDIRECT_TYPE_LOCATION;
9977 cur_arg++;
9978 destination = args[cur_arg];
9979 }
9980 else if (strcmp(args[cur_arg], "prefix") == 0) {
9981 if (!*args[cur_arg + 1])
9982 goto missing_arg;
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9983 type = REDIRECT_TYPE_PREFIX;
9984 cur_arg++;
9985 destination = args[cur_arg];
9986 }
9987 else if (strcmp(args[cur_arg], "scheme") == 0) {
9988 if (!*args[cur_arg + 1])
9989 goto missing_arg;
9990
9991 type = REDIRECT_TYPE_SCHEME;
9992 cur_arg++;
9993 destination = args[cur_arg];
9994 }
9995 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
9996 if (!*args[cur_arg + 1])
9997 goto missing_arg;
9998
9999 cur_arg++;
10000 cookie = args[cur_arg];
10001 cookie_set = 1;
10002 }
10003 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
10004 if (!*args[cur_arg + 1])
10005 goto missing_arg;
10006
10007 cur_arg++;
10008 cookie = args[cur_arg];
10009 cookie_set = 0;
10010 }
10011 else if (strcmp(args[cur_arg], "code") == 0) {
10012 if (!*args[cur_arg + 1])
10013 goto missing_arg;
10014
10015 cur_arg++;
10016 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]10017 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10018 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]10019 "'%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]10020 args[cur_arg - 1], args[cur_arg]);
10021 return NULL;
10022 }
10023 }
10024 else if (!strcmp(args[cur_arg],"drop-query")) {
10025 flags |= REDIRECT_FLAG_DROP_QS;
10026 }
10027 else if (!strcmp(args[cur_arg],"append-slash")) {
10028 flags |= REDIRECT_FLAG_APPEND_SLASH;
10029 }
10030 else if (strcmp(args[cur_arg], "if") == 0 ||
10031 strcmp(args[cur_arg], "unless") == 0) {
10032 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
10033 if (!cond) {
10034 memprintf(errmsg, "error in condition: %s", *errmsg);
10035 return NULL;
10036 }
10037 break;
10038 }
10039 else {
10040 memprintf(errmsg,
10041 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
10042 args[cur_arg]);
10043 return NULL;
10044 }
10045 cur_arg++;
10046 }
10047
10048 if (type == REDIRECT_TYPE_NONE) {
10049 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
10050 return NULL;
10051 }
10052
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]10053 if (dir && type != REDIRECT_TYPE_LOCATION) {
10054 memprintf(errmsg, "response only supports redirect type 'location'");
10055 return NULL;
10056 }
10057
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]10058 rule = calloc(1, sizeof(*rule));
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10059 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]10060 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10061
10062 if (!use_fmt) {
10063 /* old-style static redirect rule */
10064 rule->rdr_str = strdup(destination);
10065 rule->rdr_len = strlen(destination);
10066 }
10067 else {
10068 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10069
10070 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
10071 * if prefix == "/", we don't want to add anything, otherwise it
10072 * makes it hard for the user to configure a self-redirection.
10073 */
Godbachd9722032014-12-18 15:44:58 +0800[diff] [blame]10074 curproxy->conf.args.ctx = ARGC_RDR;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10075 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]10076 if (!parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
10077 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]10078 : (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
10079 errmsg)) {
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]10080 return NULL;
10081 }
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]10082 free(curproxy->conf.lfs_file);
10083 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
10084 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10085 }
10086 }
10087
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10088 if (cookie) {
10089 /* depending on cookie_set, either we want to set the cookie, or to clear it.
10090 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
10091 */
10092 rule->cookie_len = strlen(cookie);
10093 if (cookie_set) {
10094 rule->cookie_str = malloc(rule->cookie_len + 10);
10095 memcpy(rule->cookie_str, cookie, rule->cookie_len);
10096 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
10097 rule->cookie_len += 9;
10098 } else {
10099 rule->cookie_str = malloc(rule->cookie_len + 21);
10100 memcpy(rule->cookie_str, cookie, rule->cookie_len);
10101 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
10102 rule->cookie_len += 20;
10103 }
10104 }
10105 rule->type = type;
10106 rule->code = code;
10107 rule->flags = flags;
10108 LIST_INIT(&rule->list);
10109 return rule;
10110
10111 missing_arg:
10112 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
10113 return NULL;
10114}
10115
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10116/************************************************************************/
10117/* The code below is dedicated to ACL parsing and matching */
10118/************************************************************************/
10119
10120
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10121/* This function ensures that the prerequisites for an L7 fetch are ready,
10122 * which means that a request or response is ready. If some data is missing,
10123 * 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]10124 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
10125 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10126 *
10127 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10128 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
10129 * decide whether or not an HTTP message is present ;
10130 * 0 if the requested data cannot be fetched or if it is certain that
10131 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10132 * 1 if an HTTP message is ready
10133 */
James Rosewell91a41cb2015-09-18 17:11:16 +0100[diff] [blame]10134int smp_prefetch_http(struct proxy *px, struct stream *s, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10135 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10136{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10137 struct http_txn *txn;
10138 struct http_msg *msg;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10139
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10140 /* Note: it is possible that <s> is NULL when called before stream
10141 * initialization (eg: tcp-request connection), so this function is the
10142 * one responsible for guarding against this case for all HTTP users.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10143 */
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10144 if (!s)
10145 return 0;
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10146
Thierry FOURNIERed08d6a2015-09-24 08:40:18 +0200[diff] [blame]10147 if (!s->txn) {
10148 if (unlikely(!http_alloc_txn(s)))
10149 return 0; /* not enough memory */
10150 http_init_txn(s);
10151 }
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10152 txn = s->txn;
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10153 msg = &txn->req;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10154
10155 /* Check for a dependency on a request */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10156 smp->data.type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10157
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10158 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10159 /* If the buffer does not leave enough free space at the end,
10160 * we must first realign it.
10161 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10162 if (s->req.buf->p > s->req.buf->data &&
10163 s->req.buf->i + s->req.buf->p > s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)
10164 buffer_slow_realign(s->req.buf);
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10165
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10166 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]10167 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10168 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10169
10170 /* Try to decode HTTP request */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10171 if (likely(msg->next < s->req.buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10172 http_msg_analyzer(msg, &txn->hdr_idx);
10173
10174 /* Still no valid request ? */
10175 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]10176 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10177 buffer_full(s->req.buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10178 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10179 }
10180 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10181 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10182 return 0;
10183 }
10184
10185 /* OK we just got a valid HTTP request. We have some minor
10186 * preparation to perform so that further checks can rely
10187 * on HTTP tests.
10188 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10189
10190 /* If the request was parsed but was too large, we must absolutely
10191 * return an error so that it is not processed. At the moment this
10192 * cannot happen, but if the parsers are to change in the future,
10193 * we want this check to be maintained.
10194 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10195 if (unlikely(s->req.buf->i + s->req.buf->p >
10196 s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)) {
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]10197 msg->err_state = msg->msg_state;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10198 msg->msg_state = HTTP_MSG_ERROR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10199 smp->data.u.sint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10200 return 1;
10201 }
10202
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10203 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10204 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]10205 s->flags |= SF_REDIRECTABLE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10206
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10207 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
10208 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10209 }
10210
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10211 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10212 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10213 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10214
10215 /* otherwise everything's ready for the request */
10216 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10217 else {
10218 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10219 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
10220 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10221 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10222 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10223 }
10224
10225 /* everything's OK */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10226 smp->data.u.sint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10227 return 1;
10228}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10229
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10230/* 1. Check on METHOD
10231 * We use the pre-parsed method if it is known, and store its number as an
10232 * integer. If it is unknown, we use the pointer and the length.
10233 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]10234static int pat_parse_meth(const char *text, struct pattern *pattern, int mflags, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10235{
10236 int len, meth;
10237
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]10238 len = strlen(text);
10239 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10240
10241 pattern->val.i = meth;
10242 if (meth == HTTP_METH_OTHER) {
Willy Tarreau912c1192014-08-29 15:15:50 +0200[diff] [blame]10243 pattern->ptr.str = (char *)text;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10244 pattern->len = len;
10245 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10246 else {
10247 pattern->ptr.str = NULL;
10248 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10249 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10250 return 1;
10251}
10252
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10253/* This function fetches the method of current HTTP request and stores
10254 * it in the global pattern struct as a chunk. There are two possibilities :
10255 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
10256 * in <len> and <ptr> is NULL ;
10257 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
10258 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10259 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10260 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10261static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10262smp_fetch_meth(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10263{
10264 int meth;
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10265 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10266
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10267 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10268
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10269 txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10270 meth = txn->meth;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10271 smp->data.type = SMP_T_METH;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10272 smp->data.u.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10273 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10274 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
10275 /* ensure the indexes are not affected */
10276 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10277 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10278 smp->data.u.meth.str.len = txn->req.sl.rq.m_l;
10279 smp->data.u.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10280 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10281 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10282 return 1;
10283}
10284
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10285/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10286static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10287{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10288 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10289 struct pattern_list *lst;
10290 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10291
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10292 list_for_each_entry(lst, &expr->patterns, list) {
10293 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10294
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10295 /* well-known method */
10296 if (pattern->val.i != HTTP_METH_OTHER) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10297 if (smp->data.u.meth.meth == pattern->val.i)
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10298 return pattern;
10299 else
10300 continue;
10301 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10302
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10303 /* Other method, we must compare the strings */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10304 if (pattern->len != smp->data.u.meth.str.len)
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10305 continue;
10306
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]10307 icase = expr->mflags & PAT_MF_IGNORE_CASE;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10308 if ((icase && strncasecmp(pattern->ptr.str, smp->data.u.meth.str.str, smp->data.u.meth.str.len) == 0) ||
10309 (!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]10310 return pattern;
10311 }
10312 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10313}
10314
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10315static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10316smp_fetch_rqver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10317{
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10318 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10319 char *ptr;
10320 int len;
10321
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10322 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10323
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10324 txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10325 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10326 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10327
10328 while ((len-- > 0) && (*ptr++ != '/'));
10329 if (len <= 0)
10330 return 0;
10331
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10332 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10333 smp->data.u.str.str = ptr;
10334 smp->data.u.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10335
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10336 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10337 return 1;
10338}
10339
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10340static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10341smp_fetch_stver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10342{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10343 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10344 char *ptr;
10345 int len;
10346
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10347 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10348
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10349 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10350 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10351 return 0;
10352
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10353 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10354 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10355
10356 while ((len-- > 0) && (*ptr++ != '/'));
10357 if (len <= 0)
10358 return 0;
10359
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10360 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10361 smp->data.u.str.str = ptr;
10362 smp->data.u.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10363
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10364 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10365 return 1;
10366}
10367
10368/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10369static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10370smp_fetch_stcode(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.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10383 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10384
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10385 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10386 smp->data.u.sint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10387 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10388 return 1;
10389}
10390
Thierry Fournierf4011dd2016-03-29 17:23:51 +0200[diff] [blame]10391static int
10392smp_fetch_uniqueid(const struct arg *args, struct sample *smp, const char *kw, void *private)
10393{
10394 if (LIST_ISEMPTY(&smp->sess->fe->format_unique_id))
10395 return 0;
10396
10397 if (!smp->strm->unique_id) {
10398 if ((smp->strm->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
10399 return 0;
10400 smp->strm->unique_id[0] = '\0';
10401 }
10402 smp->data.u.str.len = build_logline(smp->strm, smp->strm->unique_id,
10403 UNIQUEID_LEN, &smp->sess->fe->format_unique_id);
10404
10405 smp->data.type = SMP_T_STR;
10406 smp->data.u.str.str = smp->strm->unique_id;
10407 smp->flags = SMP_F_CONST;
10408 return 1;
10409}
10410
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10411/* returns the longest available part of the body. This requires that the body
10412 * has been waited for using http-buffer-request.
10413 */
10414static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10415smp_fetch_body(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10416{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10417 struct http_msg *msg;
10418 unsigned long len;
10419 unsigned long block1;
10420 char *body;
10421 struct chunk *temp;
10422
10423 CHECK_HTTP_MESSAGE_FIRST();
10424
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10425 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10426 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10427 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10428 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10429
10430 len = http_body_bytes(msg);
10431 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
10432
10433 block1 = len;
10434 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
10435 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
10436
10437 if (block1 == len) {
10438 /* buffer is not wrapped (or empty) */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10439 smp->data.type = SMP_T_BIN;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10440 smp->data.u.str.str = body;
10441 smp->data.u.str.len = len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10442 smp->flags = SMP_F_VOL_TEST | SMP_F_CONST;
10443 }
10444 else {
10445 /* buffer is wrapped, we need to defragment it */
10446 temp = get_trash_chunk();
10447 memcpy(temp->str, body, block1);
10448 memcpy(temp->str + block1, msg->chn->buf->data, len - block1);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10449 smp->data.type = SMP_T_BIN;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10450 smp->data.u.str.str = temp->str;
10451 smp->data.u.str.len = len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10452 smp->flags = SMP_F_VOL_TEST;
10453 }
10454 return 1;
10455}
10456
10457
10458/* returns the available length of the body. This requires that the body
10459 * has been waited for using http-buffer-request.
10460 */
10461static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10462smp_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]10463{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10464 struct http_msg *msg;
10465
10466 CHECK_HTTP_MESSAGE_FIRST();
10467
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10468 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10469 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10470 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10471 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10472
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10473 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10474 smp->data.u.sint = http_body_bytes(msg);
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10475
10476 smp->flags = SMP_F_VOL_TEST;
10477 return 1;
10478}
10479
10480
10481/* returns the advertised length of the body, or the advertised size of the
10482 * chunks available in the buffer. This requires that the body has been waited
10483 * for using http-buffer-request.
10484 */
10485static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10486smp_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]10487{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10488 struct http_msg *msg;
10489
10490 CHECK_HTTP_MESSAGE_FIRST();
10491
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10492 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10493 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10494 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10495 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10496
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10497 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10498 smp->data.u.sint = msg->body_len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10499
10500 smp->flags = SMP_F_VOL_TEST;
10501 return 1;
10502}
10503
10504
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10505/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10506static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10507smp_fetch_url(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10508{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10509 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10510
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10511 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10512
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10513 txn = smp->strm->txn;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10514 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10515 smp->data.u.str.len = txn->req.sl.rq.u_l;
10516 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]10517 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10518 return 1;
10519}
10520
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10521static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10522smp_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]10523{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10524 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10525 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10526
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10527 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10528
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10529 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10530 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]10531 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]10532 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10533
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10534 smp->data.type = SMP_T_IPV4;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10535 smp->data.u.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10536 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10537 return 1;
10538}
10539
10540static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10541smp_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]10542{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10543 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10544 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10545
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10546 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10547
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10548 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10549 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]10550 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
10551 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10552
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10553 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10554 smp->data.u.sint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]10555 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10556 return 1;
10557}
10558
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10559/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10560 * Accepts an optional argument of type string containing the header field name,
10561 * and an optional argument of type signed or unsigned integer to request an
10562 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10563 * headers are considered from the first one. It does not stop on commas and
10564 * returns full lines instead (useful for User-Agent or Date for example).
10565 */
10566static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10567smp_fetch_fhdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10568{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10569 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10570 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10571 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10572 int occ = 0;
10573 const char *name_str = NULL;
10574 int name_len = 0;
10575
10576 if (!ctx) {
10577 /* first call */
10578 ctx = &static_hdr_ctx;
10579 ctx->idx = 0;
10580 smp->ctx.a[0] = ctx;
10581 }
10582
10583 if (args) {
10584 if (args[0].type != ARGT_STR)
10585 return 0;
10586 name_str = args[0].data.str.str;
10587 name_len = args[0].data.str.len;
10588
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10589 if (args[1].type == ARGT_SINT)
10590 occ = args[1].data.sint;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10591 }
10592
10593 CHECK_HTTP_MESSAGE_FIRST();
10594
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10595 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10596 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]10597
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10598 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
10599 /* search for header from the beginning */
10600 ctx->idx = 0;
10601
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10602 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10603 /* no explicit occurrence and single fetch => last header by default */
10604 occ = -1;
10605
10606 if (!occ)
10607 /* prepare to report multiple occurrences for ACL fetches */
10608 smp->flags |= SMP_F_NOT_LAST;
10609
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10610 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10611 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10612 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]10613 return 1;
10614
10615 smp->flags &= ~SMP_F_NOT_LAST;
10616 return 0;
10617}
10618
10619/* 6. Check on HTTP header count. The number of occurrences is returned.
10620 * Accepts exactly 1 argument of type string. It does not stop on commas and
10621 * returns full lines instead (useful for User-Agent or Date for example).
10622 */
10623static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10624smp_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]10625{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10626 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10627 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10628 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10629 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10630 const char *name = NULL;
10631 int len = 0;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10632
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10633 if (args && args->type == ARGT_STR) {
10634 name = args->data.str.str;
10635 len = args->data.str.len;
10636 }
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10637
10638 CHECK_HTTP_MESSAGE_FIRST();
10639
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10640 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10641 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]10642
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10643 ctx.idx = 0;
10644 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10645 while (http_find_full_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10646 cnt++;
10647
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10648 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10649 smp->data.u.sint = cnt;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10650 smp->flags = SMP_F_VOL_HDR;
10651 return 1;
10652}
10653
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10654static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10655smp_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]10656{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10657 struct hdr_idx *idx;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10658 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10659 const struct http_msg *msg;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10660 struct chunk *temp;
10661 char del = ',';
10662
10663 if (args && args->type == ARGT_STR)
10664 del = *args[0].data.str.str;
10665
10666 CHECK_HTTP_MESSAGE_FIRST();
10667
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10668 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10669 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]10670
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10671 temp = get_trash_chunk();
10672
10673 ctx.idx = 0;
10674 while (http_find_next_header(msg->chn->buf->p, idx, &ctx)) {
10675 if (temp->len)
10676 temp->str[temp->len++] = del;
10677 memcpy(temp->str + temp->len, ctx.line, ctx.del);
10678 temp->len += ctx.del;
10679 }
10680
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10681 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10682 smp->data.u.str.str = temp->str;
10683 smp->data.u.str.len = temp->len;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10684 smp->flags = SMP_F_VOL_HDR;
10685 return 1;
10686}
10687
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10688/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10689 * Accepts an optional argument of type string containing the header field name,
10690 * and an optional argument of type signed or unsigned integer to request an
10691 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10692 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10693 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10694static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10695smp_fetch_hdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10696{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10697 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10698 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10699 const struct http_msg *msg;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10700 int occ = 0;
10701 const char *name_str = NULL;
10702 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10703
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10704 if (!ctx) {
10705 /* first call */
10706 ctx = &static_hdr_ctx;
10707 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]10708 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10709 }
10710
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10711 if (args) {
10712 if (args[0].type != ARGT_STR)
10713 return 0;
10714 name_str = args[0].data.str.str;
10715 name_len = args[0].data.str.len;
10716
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10717 if (args[1].type == ARGT_SINT)
10718 occ = args[1].data.sint;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10719 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10720
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10721 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10722
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10723 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10724 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]10725
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10726 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10727 /* search for header from the beginning */
10728 ctx->idx = 0;
10729
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10730 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10731 /* no explicit occurrence and single fetch => last header by default */
10732 occ = -1;
10733
10734 if (!occ)
10735 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10736 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]10737
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10738 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10739 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10740 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]10741 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10742
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10743 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10744 return 0;
10745}
10746
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10747/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10748 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10749 */
10750static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10751smp_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]10752{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10753 struct hdr_idx *idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10754 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10755 const struct http_msg *msg;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10756 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10757 const char *name = NULL;
10758 int len = 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10759
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10760 if (args && args->type == ARGT_STR) {
10761 name = args->data.str.str;
10762 len = args->data.str.len;
10763 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10764
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10765 CHECK_HTTP_MESSAGE_FIRST();
10766
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10767 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10768 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]10769
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10770 ctx.idx = 0;
10771 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10772 while (http_find_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10773 cnt++;
10774
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10775 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10776 smp->data.u.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10777 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10778 return 1;
10779}
10780
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10781/* Fetch an HTTP header's integer value. The integer value is returned. It
10782 * takes a mandatory argument of type string and an optional one of type int
10783 * to designate a specific occurrence. It returns an unsigned integer, which
10784 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10785 */
10786static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10787smp_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]10788{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10789 int ret = smp_fetch_hdr(args, smp, kw, private);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10790
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10791 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10792 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10793 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]10794 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10795
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10796 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10797}
10798
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10799/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
10800 * and an optional one of type int to designate a specific occurrence.
10801 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10802 */
10803static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10804smp_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]10805{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10806 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10807
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10808 while ((ret = smp_fetch_hdr(args, smp, kw, private)) > 0) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10809 if (url2ipv4((char *)smp->data.u.str.str, &smp->data.u.ipv4)) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10810 smp->data.type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10811 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10812 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10813 struct chunk *temp = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10814 if (smp->data.u.str.len < temp->size - 1) {
10815 memcpy(temp->str, smp->data.u.str.str, smp->data.u.str.len);
10816 temp->str[smp->data.u.str.len] = '\0';
10817 if (inet_pton(AF_INET6, temp->str, &smp->data.u.ipv6)) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10818 smp->data.type = SMP_T_IPV6;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10819 break;
10820 }
10821 }
10822 }
10823
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10824 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10825 if (!(smp->flags & SMP_F_NOT_LAST))
10826 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10827 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10828 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10829}
10830
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10831/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
10832 * the first '/' after the possible hostname, and ends before the possible '?'.
10833 */
10834static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10835smp_fetch_path(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10836{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10837 struct http_txn *txn;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10838 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10839
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10840 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10841
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10842 txn = smp->strm->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10843 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]10844 ptr = http_get_path(txn);
10845 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10846 return 0;
10847
10848 /* OK, we got the '/' ! */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10849 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10850 smp->data.u.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10851
10852 while (ptr < end && *ptr != '?')
10853 ptr++;
10854
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10855 smp->data.u.str.len = ptr - smp->data.u.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10856 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10857 return 1;
10858}
10859
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10860/* This produces a concatenation of the first occurrence of the Host header
10861 * followed by the path component if it begins with a slash ('/'). This means
10862 * that '*' will not be added, resulting in exactly the first Host entry.
10863 * If no Host header is found, then the path is returned as-is. The returned
10864 * 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]10865 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10866 */
10867static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10868smp_fetch_base(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10869{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10870 struct http_txn *txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10871 char *ptr, *end, *beg;
10872 struct hdr_ctx ctx;
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10873 struct chunk *temp;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10874
10875 CHECK_HTTP_MESSAGE_FIRST();
10876
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10877 txn = smp->strm->txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10878 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10879 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]10880 return smp_fetch_path(args, smp, kw, private);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10881
10882 /* 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]10883 temp = get_trash_chunk();
10884 memcpy(temp->str, ctx.line + ctx.val, ctx.vlen);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10885 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10886 smp->data.u.str.str = temp->str;
10887 smp->data.u.str.len = ctx.vlen;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10888
10889 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10890 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]10891 beg = http_get_path(txn);
10892 if (!beg)
10893 beg = end;
10894
10895 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10896
10897 if (beg < ptr && *beg == '/') {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10898 memcpy(smp->data.u.str.str + smp->data.u.str.len, beg, ptr - beg);
10899 smp->data.u.str.len += ptr - beg;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10900 }
10901
10902 smp->flags = SMP_F_VOL_1ST;
10903 return 1;
10904}
10905
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10906/* This produces a 32-bit hash of the concatenation of the first occurrence of
10907 * the Host header followed by the path component if it begins with a slash ('/').
10908 * This means that '*' will not be added, resulting in exactly the first Host
10909 * 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]10910 * is hashed using the path hash followed by a full avalanche hash and provides a
10911 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10912 * high-traffic sites without having to store whole paths.
10913 */
Thierry FOURNIER055b9d52014-07-15 16:11:07 +0200[diff] [blame]10914int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10915smp_fetch_base32(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10916{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10917 struct http_txn *txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10918 struct hdr_ctx ctx;
10919 unsigned int hash = 0;
10920 char *ptr, *beg, *end;
10921 int len;
10922
10923 CHECK_HTTP_MESSAGE_FIRST();
10924
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10925 txn = smp->strm->txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10926 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10927 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]10928 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10929 ptr = ctx.line + ctx.val;
10930 len = ctx.vlen;
10931 while (len--)
10932 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10933 }
10934
10935 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10936 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]10937 beg = http_get_path(txn);
10938 if (!beg)
10939 beg = end;
10940
10941 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10942
10943 if (beg < ptr && *beg == '/') {
10944 while (beg < ptr)
10945 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10946 }
10947 hash = full_hash(hash);
10948
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10949 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10950 smp->data.u.sint = hash;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10951 smp->flags = SMP_F_VOL_1ST;
10952 return 1;
10953}
10954
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10955/* 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]10956 * path as returned by smp_fetch_base32(). The idea is to have per-source and
10957 * per-path counters. The result is a binary block from 8 to 20 bytes depending
10958 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10959 * that in environments where IPv6 is insignificant, truncating the output to
10960 * 8 bytes would still work.
10961 */
10962static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10963smp_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]10964{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10965 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10966 struct connection *cli_conn = objt_conn(smp->sess->origin);
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10967
10968 if (!cli_conn)
10969 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10970
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10971 if (!smp_fetch_base32(args, smp, kw, private))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10972 return 0;
10973
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10974 temp = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10975 *(unsigned int *)temp->str = htonl(smp->data.u.sint);
Willy Tarreau5ad6e1d2014-07-15 21:34:06 +0200[diff] [blame]10976 temp->len += sizeof(unsigned int);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10977
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10978 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10979 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10980 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]10981 temp->len += 4;
10982 break;
10983 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10984 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]10985 temp->len += 16;
10986 break;
10987 default:
10988 return 0;
10989 }
10990
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10991 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10992 smp->data.type = SMP_T_BIN;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10993 return 1;
10994}
10995
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10996/* Extracts the query string, which comes after the question mark '?'. If no
10997 * question mark is found, nothing is returned. Otherwise it returns a sample
10998 * of type string carrying the whole query string.
10999 */
11000static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11001smp_fetch_query(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]11002{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11003 struct http_txn *txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]11004 char *ptr, *end;
11005
11006 CHECK_HTTP_MESSAGE_FIRST();
11007
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11008 txn = smp->strm->txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]11009 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
11010 end = ptr + txn->req.sl.rq.u_l;
11011
11012 /* look up the '?' */
11013 do {
11014 if (ptr == end)
11015 return 0;
11016 } while (*ptr++ != '?');
11017
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11018 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11019 smp->data.u.str.str = ptr;
11020 smp->data.u.str.len = end - ptr;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]11021 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
11022 return 1;
11023}
11024
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]11025static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11026smp_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]11027{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]11028 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
11029 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
11030 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]11031
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11032 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]11033
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11034 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11035 smp->data.u.sint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]11036 return 1;
11037}
11038
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]11039/* return a valid test if the current request is the first one on the connection */
11040static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11041smp_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]11042{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11043 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11044 smp->data.u.sint = !(smp->strm->txn->flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]11045 return 1;
11046}
11047
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11048/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11049static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11050smp_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]11051{
11052
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11053 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11054 return 0;
11055
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]11056 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11057
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11058 if (!get_http_auth(smp->strm))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11059 return 0;
11060
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11061 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11062 smp->data.u.sint = check_user(args->data.usr, smp->strm->txn->auth.user,
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11063 smp->strm->txn->auth.pass);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11064 return 1;
11065}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11066
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11067/* Accepts exactly 1 argument of type userlist */
11068static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11069smp_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]11070{
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11071 if (!args || args->type != ARGT_USR)
11072 return 0;
11073
11074 CHECK_HTTP_MESSAGE_FIRST();
11075
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11076 if (!get_http_auth(smp->strm))
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11077 return 0;
11078
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11079 /* if the user does not belong to the userlist or has a wrong password,
11080 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]11081 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11082 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11083 if (!check_user(args->data.usr, smp->strm->txn->auth.user,
11084 smp->strm->txn->auth.pass))
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]11085 return 0;
11086
11087 /* pat_match_auth() will need the user list */
11088 smp->ctx.a[0] = args->data.usr;
11089
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11090 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11091 smp->flags = SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11092 smp->data.u.str.str = smp->strm->txn->auth.user;
11093 smp->data.u.str.len = strlen(smp->strm->txn->auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11094
11095 return 1;
11096}
11097
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11098/* Try to find the next occurrence of a cookie name in a cookie header value.
11099 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
11100 * the cookie value is returned into *value and *value_l, and the function
11101 * returns a pointer to the next pointer to search from if the value was found.
11102 * Otherwise if the cookie was not found, NULL is returned and neither value
11103 * nor value_l are touched. The input <hdr> string should first point to the
11104 * header's value, and the <hdr_end> pointer must point to the first character
11105 * not part of the value. <list> must be non-zero if value may represent a list
11106 * of values (cookie headers). This makes it faster to abort parsing when no
11107 * list is expected.
11108 */
David Carlier4686f792015-09-25 14:10:50 +0100[diff] [blame]11109char *
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11110extract_cookie_value(char *hdr, const char *hdr_end,
11111 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]11112 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11113{
11114 char *equal, *att_end, *att_beg, *val_beg, *val_end;
11115 char *next;
11116
11117 /* we search at least a cookie name followed by an equal, and more
11118 * generally something like this :
11119 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
11120 */
11121 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
11122 /* Iterate through all cookies on this line */
11123
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]11124 while (att_beg < hdr_end && HTTP_IS_SPHT(*att_beg))
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11125 att_beg++;
11126
11127 /* find att_end : this is the first character after the last non
11128 * space before the equal. It may be equal to hdr_end.
11129 */
11130 equal = att_end = att_beg;
11131
11132 while (equal < hdr_end) {
11133 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
11134 break;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]11135 if (HTTP_IS_SPHT(*equal++))
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11136 continue;
11137 att_end = equal;
11138 }
11139
11140 /* here, <equal> points to '=', a delimitor or the end. <att_end>
11141 * is between <att_beg> and <equal>, both may be identical.
11142 */
11143
11144 /* look for end of cookie if there is an equal sign */
11145 if (equal < hdr_end && *equal == '=') {
11146 /* look for the beginning of the value */
11147 val_beg = equal + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]11148 while (val_beg < hdr_end && HTTP_IS_SPHT(*val_beg))
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11149 val_beg++;
11150
11151 /* find the end of the value, respecting quotes */
11152 next = find_cookie_value_end(val_beg, hdr_end);
11153
11154 /* make val_end point to the first white space or delimitor after the value */
11155 val_end = next;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]11156 while (val_end > val_beg && HTTP_IS_SPHT(*(val_end - 1)))
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11157 val_end--;
11158 } else {
11159 val_beg = val_end = next = equal;
11160 }
11161
11162 /* We have nothing to do with attributes beginning with '$'. However,
11163 * they will automatically be removed if a header before them is removed,
11164 * since they're supposed to be linked together.
11165 */
11166 if (*att_beg == '$')
11167 continue;
11168
11169 /* Ignore cookies with no equal sign */
11170 if (equal == next)
11171 continue;
11172
11173 /* Now we have the cookie name between att_beg and att_end, and
11174 * its value between val_beg and val_end.
11175 */
11176
11177 if (att_end - att_beg == cookie_name_l &&
11178 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
11179 /* let's return this value and indicate where to go on from */
11180 *value = val_beg;
11181 *value_l = val_end - val_beg;
11182 return next + 1;
11183 }
11184
11185 /* Set-Cookie headers only have the name in the first attr=value part */
11186 if (!list)
11187 break;
11188 }
11189
11190 return NULL;
11191}
11192
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11193/* Fetch a captured HTTP request header. The index is the position of
11194 * the "capture" option in the configuration file
11195 */
11196static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11197smp_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]11198{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11199 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11200 int idx;
11201
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11202 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11203 return 0;
11204
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11205 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11206
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11207 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]11208 return 0;
11209
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11210 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11211 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11212 smp->data.u.str.str = smp->strm->req_cap[idx];
11213 smp->data.u.str.len = strlen(smp->strm->req_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11214
11215 return 1;
11216}
11217
11218/* Fetch a captured HTTP response header. The index is the position of
11219 * the "capture" option in the configuration file
11220 */
11221static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11222smp_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]11223{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11224 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11225 int idx;
11226
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11227 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11228 return 0;
11229
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11230 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11231
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11232 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]11233 return 0;
11234
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11235 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11236 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11237 smp->data.u.str.str = smp->strm->res_cap[idx];
11238 smp->data.u.str.len = strlen(smp->strm->res_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11239
11240 return 1;
11241}
11242
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11243/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
11244static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11245smp_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]11246{
11247 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11248 struct http_txn *txn = smp->strm->txn;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11249 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11250
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11251 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11252 return 0;
11253
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11254 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11255
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11256 while (*ptr != ' ' && *ptr != '\0') /* find first space */
11257 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11258
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11259 temp = get_trash_chunk();
11260 temp->str = txn->uri;
11261 temp->len = ptr - txn->uri;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11262 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11263 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11264 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11265
11266 return 1;
11267
11268}
11269
11270/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
11271static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11272smp_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]11273{
11274 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11275 struct http_txn *txn = smp->strm->txn;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11276 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11277
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11278 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11279 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11280
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11281 ptr = txn->uri;
11282
11283 while (*ptr != ' ' && *ptr != '\0') /* find first space */
11284 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11285
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11286 if (!*ptr)
11287 return 0;
11288
11289 ptr++; /* skip the space */
11290
11291 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11292 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11293 if (!ptr)
11294 return 0;
11295 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
11296 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11297
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11298 smp->data.u.str = *temp;
11299 smp->data.u.str.len = ptr - temp->str;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11300 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11301 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11302
11303 return 1;
11304}
11305
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11306/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
11307 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11308 */
11309static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11310smp_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]11311{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11312 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11313
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11314 if (!txn || txn->req.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11315 return 0;
11316
11317 if (txn->req.flags & HTTP_MSGF_VER_11)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11318 smp->data.u.str.str = "HTTP/1.1";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11319 else
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11320 smp->data.u.str.str = "HTTP/1.0";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11321
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11322 smp->data.u.str.len = 8;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11323 smp->data.type = SMP_T_STR;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11324 smp->flags = SMP_F_CONST;
11325 return 1;
11326
11327}
11328
11329/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
11330 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11331 */
11332static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11333smp_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]11334{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11335 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11336
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11337 if (!txn || txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11338 return 0;
11339
11340 if (txn->rsp.flags & HTTP_MSGF_VER_11)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11341 smp->data.u.str.str = "HTTP/1.1";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11342 else
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11343 smp->data.u.str.str = "HTTP/1.0";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11344
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11345 smp->data.u.str.len = 8;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11346 smp->data.type = SMP_T_STR;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11347 smp->flags = SMP_F_CONST;
11348 return 1;
11349
11350}
11351
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11352
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11353/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11354 * 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]11355 * 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]11356 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11357 * 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]11358 * Accepts exactly 1 argument of type string. If the input options indicate
11359 * that no iterating is desired, then only last value is fetched if any.
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]11360 * The returned sample is of type CSTR. Can be used to parse cookies in other
11361 * files.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11362 */
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11363int 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]11364{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11365 struct http_txn *txn;
11366 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11367 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11368 const struct http_msg *msg;
11369 const char *hdr_name;
11370 int hdr_name_len;
11371 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11372 int occ = 0;
11373 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11374
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11375 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11376 return 0;
11377
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11378 if (!ctx) {
11379 /* first call */
11380 ctx = &static_hdr_ctx;
11381 ctx->idx = 0;
11382 smp->ctx.a[2] = ctx;
11383 }
11384
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11385 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11386
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11387 txn = smp->strm->txn;
11388 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11389
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11390 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11391 msg = &txn->req;
11392 hdr_name = "Cookie";
11393 hdr_name_len = 6;
11394 } else {
11395 msg = &txn->rsp;
11396 hdr_name = "Set-Cookie";
11397 hdr_name_len = 10;
11398 }
11399
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11400 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11401 /* no explicit occurrence and single fetch => last cookie by default */
11402 occ = -1;
11403
11404 /* OK so basically here, either we want only one value and it's the
11405 * last one, or we want to iterate over all of them and we fetch the
11406 * next one.
11407 */
11408
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11409 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11410 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11411 /* search for the header from the beginning, we must first initialize
11412 * the search parameters.
11413 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11414 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11415 ctx->idx = 0;
11416 }
11417
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11418 smp->flags |= SMP_F_VOL_HDR;
11419
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11420 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11421 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
11422 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11423 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
11424 goto out;
11425
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11426 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11427 continue;
11428
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11429 smp->ctx.a[0] = ctx->line + ctx->val;
11430 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11431 }
11432
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11433 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11434 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11435 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]11436 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11437 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11438 &smp->data.u.str.str,
11439 &smp->data.u.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11440 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11441 found = 1;
11442 if (occ >= 0) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11443 /* one value was returned into smp->data.u.str.{str,len} */
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11444 smp->flags |= SMP_F_NOT_LAST;
11445 return 1;
11446 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11447 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11448 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11449 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11450 /* all cookie headers and values were scanned. If we're looking for the
11451 * last occurrence, we may return it now.
11452 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11453 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11454 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11455 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11456}
11457
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11458/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11459 * 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]11460 * multiple cookies may be parsed on the same line. The returned sample is of
11461 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11462 */
11463static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11464smp_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]11465{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11466 struct http_txn *txn;
11467 struct hdr_idx *idx;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11468 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11469 const struct http_msg *msg;
11470 const char *hdr_name;
11471 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11472 int cnt;
11473 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11474 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11475
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11476 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11477 return 0;
11478
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11479 CHECK_HTTP_MESSAGE_FIRST();
11480
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11481 txn = smp->strm->txn;
11482 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11483
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11484 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11485 msg = &txn->req;
11486 hdr_name = "Cookie";
11487 hdr_name_len = 6;
11488 } else {
11489 msg = &txn->rsp;
11490 hdr_name = "Set-Cookie";
11491 hdr_name_len = 10;
11492 }
11493
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11494 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]11495 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11496 ctx.idx = 0;
11497 cnt = 0;
11498
11499 while (1) {
11500 /* Note: val_beg == NULL every time we need to fetch a new header */
11501 if (!val_beg) {
11502 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
11503 break;
11504
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11505 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11506 continue;
11507
11508 val_beg = ctx.line + ctx.val;
11509 val_end = val_beg + ctx.vlen;
11510 }
11511
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11512 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11513 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11514 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11515 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11516 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11517 &smp->data.u.str.str,
11518 &smp->data.u.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11519 cnt++;
11520 }
11521 }
11522
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11523 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11524 smp->data.u.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11525 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11526 return 1;
11527}
11528
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11529/* Fetch an cookie's integer value. The integer value is returned. It
11530 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
11531 */
11532static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11533smp_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]11534{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11535 int ret = smp_fetch_cookie(args, smp, kw, private);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11536
11537 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11538 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11539 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]11540 }
11541
11542 return ret;
11543}
11544
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11545/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]11546/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11547/************************************************************************/
11548
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11549/*
11550 * Given a path string and its length, find the position of beginning of the
11551 * query string. Returns NULL if no query string is found in the path.
11552 *
11553 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
11554 *
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11555 * find_query_string(path, n, '?') points to "yo=mama;ye=daddy" string.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11556 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11557static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11558{
11559 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]11560
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11561 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11562 return p ? p + 1 : NULL;
11563}
11564
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11565static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11566{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11567 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11568}
11569
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11570/* after increasing a pointer value, it can exceed the first buffer
11571 * size. This function transform the value of <ptr> according with
11572 * the expected position. <chunks> is an array of the one or two
11573 * avalaible chunks. The first value is the start of the first chunk,
11574 * the second value if the end+1 of the first chunks. The third value
11575 * is NULL or the start of the second chunk and the fourth value is
11576 * the end+1 of the second chunk. The function returns 1 if does a
11577 * wrap, else returns 0.
11578 */
11579static inline int fix_pointer_if_wrap(const char **chunks, const char **ptr)
11580{
11581 if (*ptr < chunks[1])
11582 return 0;
11583 if (!chunks[2])
11584 return 0;
11585 *ptr = chunks[2] + ( *ptr - chunks[1] );
11586 return 1;
11587}
11588
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11589/*
11590 * Given a url parameter, find the starting position of the first occurence,
11591 * or NULL if the parameter is not found.
11592 *
11593 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
11594 * the function will return query_string+8.
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11595 *
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11596 * Warning: this function returns a pointer that can point to the first chunk
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11597 * or the second chunk. The caller must be check the position before using the
11598 * result.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11599 */
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11600static const char *
11601find_url_param_pos(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11602 const char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11603 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11604{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11605 const char *pos, *last, *equal;
11606 const char **bufs = chunks;
11607 int l1, l2;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11608
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11609
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11610 pos = bufs[0];
11611 last = bufs[1];
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11612 while (pos < last) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11613 /* Check the equal. */
11614 equal = pos + url_param_name_l;
11615 if (fix_pointer_if_wrap(chunks, &equal)) {
11616 if (equal >= chunks[3])
11617 return NULL;
11618 } else {
11619 if (equal >= chunks[1])
11620 return NULL;
11621 }
11622 if (*equal == '=') {
11623 if (pos + url_param_name_l > last) {
11624 /* process wrap case, we detect a wrap. In this case, the
11625 * comparison is performed in two parts.
11626 */
11627
11628 /* This is the end, we dont have any other chunk. */
11629 if (bufs != chunks || !bufs[2])
11630 return NULL;
11631
11632 /* Compute the length of each part of the comparison. */
11633 l1 = last - pos;
11634 l2 = url_param_name_l - l1;
11635
11636 /* The second buffer is too short to contain the compared string. */
11637 if (bufs[2] + l2 > bufs[3])
11638 return NULL;
11639
11640 if (memcmp(pos, url_param_name, l1) == 0 &&
11641 memcmp(bufs[2], url_param_name+l1, l2) == 0)
11642 return pos;
11643
11644 /* Perform wrapping and jump the string who fail the comparison. */
11645 bufs += 2;
11646 pos = bufs[0] + l2;
11647 last = bufs[1];
11648
11649 } else {
11650 /* process a simple comparison. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11651 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
11652 return pos;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11653 pos += url_param_name_l + 1;
11654 if (fix_pointer_if_wrap(chunks, &pos))
11655 last = bufs[2];
11656 }
11657 }
11658
11659 while (1) {
11660 /* Look for the next delimiter. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11661 while (pos < last && !is_param_delimiter(*pos, delim))
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11662 pos++;
11663 if (pos < last)
11664 break;
11665 /* process buffer wrapping. */
11666 if (bufs != chunks || !bufs[2])
11667 return NULL;
11668 bufs += 2;
11669 pos = bufs[0];
11670 last = bufs[1];
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11671 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11672 pos++;
11673 }
11674 return NULL;
11675}
11676
11677/*
Cyril Bontéce1ef4d2015-11-26 21:39:56 +0100[diff] [blame]11678 * Given a url parameter name and a query string, find the next value.
11679 * An empty url_param_name matches the first available parameter.
11680 * If the parameter is found, 1 is returned and *vstart / *vend are updated to
11681 * respectively provide a pointer to the value and its end.
11682 * Otherwise, 0 is returned and vstart/vend are not modified.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11683 */
11684static int
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11685find_next_url_param(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11686 const char* url_param_name, size_t url_param_name_l,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11687 const char **vstart, const char **vend, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11688{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11689 const char *arg_start, *qs_end;
11690 const char *value_start, *value_end;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11691
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11692 arg_start = chunks[0];
11693 qs_end = chunks[1];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11694 if (url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11695 /* Looks for an argument name. */
11696 arg_start = find_url_param_pos(chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11697 url_param_name, url_param_name_l,
11698 delim);
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11699 /* Check for wrapping. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11700 if (arg_start >= qs_end)
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11701 qs_end = chunks[3];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11702 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11703 if (!arg_start)
11704 return 0;
11705
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11706 if (!url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11707 while (1) {
11708 /* looks for the first argument. */
11709 value_start = memchr(arg_start, '=', qs_end - arg_start);
11710 if (!value_start) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11711 /* Check for wrapping. */
11712 if (arg_start >= chunks[0] &&
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11713 arg_start < chunks[1] &&
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11714 chunks[2]) {
11715 arg_start = chunks[2];
11716 qs_end = chunks[3];
11717 continue;
11718 }
11719 return 0;
11720 }
11721 break;
11722 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11723 value_start++;
11724 }
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11725 else {
11726 /* Jump the argument length. */
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11727 value_start = arg_start + url_param_name_l + 1;
11728
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11729 /* Check for pointer wrapping. */
11730 if (fix_pointer_if_wrap(chunks, &value_start)) {
11731 /* Update the end pointer. */
11732 qs_end = chunks[3];
11733
11734 /* Check for overflow. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11735 if (value_start >= qs_end)
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11736 return 0;
11737 }
11738 }
11739
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11740 value_end = value_start;
11741
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11742 while (1) {
11743 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
11744 value_end++;
11745 if (value_end < qs_end)
11746 break;
11747 /* process buffer wrapping. */
11748 if (value_end >= chunks[0] &&
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11749 value_end < chunks[1] &&
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11750 chunks[2]) {
11751 value_end = chunks[2];
11752 qs_end = chunks[3];
11753 continue;
11754 }
11755 break;
11756 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11757
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11758 *vstart = value_start;
11759 *vend = value_end;
Cyril Bontéce1ef4d2015-11-26 21:39:56 +0100[diff] [blame]11760 return 1;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11761}
11762
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11763/* This scans a URL-encoded query string. It takes an optionally wrapping
11764 * string whose first contigous chunk has its beginning in ctx->a[0] and end
11765 * in ctx->a[1], and the optional second part in (ctx->a[2]..ctx->a[3]). The
11766 * pointers are updated for next iteration before leaving.
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11767 */
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11768static int
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11769smp_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]11770{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11771 const char *vstart, *vend;
11772 struct chunk *temp;
11773 const char **chunks = (const char **)smp->ctx.a;
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11774
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11775 if (!find_next_url_param(chunks,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11776 name, name_len,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11777 &vstart, &vend,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11778 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11779 return 0;
11780
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11781 /* Create sample. If the value is contiguous, return the pointer as CONST,
11782 * if the value is wrapped, copy-it in a buffer.
11783 */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11784 smp->data.type = SMP_T_STR;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11785 if (chunks[2] &&
11786 vstart >= chunks[0] && vstart <= chunks[1] &&
11787 vend >= chunks[2] && vend <= chunks[3]) {
11788 /* Wrapped case. */
11789 temp = get_trash_chunk();
11790 memcpy(temp->str, vstart, chunks[1] - vstart);
11791 memcpy(temp->str + ( chunks[1] - vstart ), chunks[2], vend - chunks[2]);
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11792 smp->data.u.str.str = temp->str;
11793 smp->data.u.str.len = ( chunks[1] - vstart ) + ( vend - chunks[2] );
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11794 } else {
11795 /* Contiguous case. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11796 smp->data.u.str.str = (char *)vstart;
11797 smp->data.u.str.len = vend - vstart;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11798 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
11799 }
11800
11801 /* Update context, check wrapping. */
11802 chunks[0] = vend;
11803 if (chunks[2] && vend >= chunks[2] && vend <= chunks[3]) {
11804 chunks[1] = chunks[3];
11805 chunks[2] = NULL;
11806 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11807
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11808 if (chunks[0] < chunks[1])
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11809 smp->flags |= SMP_F_NOT_LAST;
11810
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11811 return 1;
11812}
11813
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11814/* This function iterates over each parameter of the query string. It uses
11815 * 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]11816 * parameter. Since it uses smp_fetch_param(), ctx->a[2..3] are both NULL.
11817 * An optional parameter name is passed in args[0], otherwise any parameter is
11818 * considered. It supports an optional delimiter argument for the beginning of
11819 * the string in args[1], which defaults to "?".
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11820 */
11821static int
11822smp_fetch_url_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11823{
11824 struct http_msg *msg;
11825 char delim = '?';
11826 const char *name;
11827 int name_len;
11828
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11829 if (!args ||
11830 (args[0].type && args[0].type != ARGT_STR) ||
11831 (args[1].type && args[1].type != ARGT_STR))
11832 return 0;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11833
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11834 name = "";
11835 name_len = 0;
11836 if (args->type == ARGT_STR) {
11837 name = args->data.str.str;
11838 name_len = args->data.str.len;
11839 }
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11840
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11841 if (args[1].type)
11842 delim = *args[1].data.str.str;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11843
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11844 if (!smp->ctx.a[0]) { // first call, find the query string
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11845 CHECK_HTTP_MESSAGE_FIRST();
11846
11847 msg = &smp->strm->txn->req;
11848
11849 smp->ctx.a[0] = find_param_list(msg->chn->buf->p + msg->sl.rq.u,
11850 msg->sl.rq.u_l, delim);
11851 if (!smp->ctx.a[0])
11852 return 0;
11853
11854 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]11855
11856 /* Assume that the context is filled with NULL pointer
11857 * before the first call.
11858 * smp->ctx.a[2] = NULL;
11859 * smp->ctx.a[3] = NULL;
11860 */
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11861 }
11862
11863 return smp_fetch_param(delim, name, name_len, args, smp, kw, private);
11864}
11865
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11866/* This function iterates over each parameter of the body. This requires
11867 * that the body has been waited for using http-buffer-request. It uses
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11868 * ctx->a[0] and ctx->a[1] to store the beginning and end of the first
11869 * contigous part of the body, and optionally ctx->a[2..3] to reference the
11870 * optional second part if the body wraps at the end of the buffer. An optional
11871 * parameter name is passed in args[0], otherwise any parameter is considered.
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11872 */
11873static int
11874smp_fetch_body_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11875{
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11876 struct http_msg *msg;
11877 unsigned long len;
11878 unsigned long block1;
11879 char *body;
11880 const char *name;
11881 int name_len;
11882
11883 if (!args || (args[0].type && args[0].type != ARGT_STR))
11884 return 0;
11885
11886 name = "";
11887 name_len = 0;
11888 if (args[0].type == ARGT_STR) {
11889 name = args[0].data.str.str;
11890 name_len = args[0].data.str.len;
11891 }
11892
11893 if (!smp->ctx.a[0]) { // first call, find the query string
11894 CHECK_HTTP_MESSAGE_FIRST();
11895
11896 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]11897 msg = &smp->strm->txn->req;
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11898 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]11899 msg = &smp->strm->txn->rsp;
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11900
11901 len = http_body_bytes(msg);
11902 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
11903
11904 block1 = len;
11905 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
11906 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
11907
11908 if (block1 == len) {
11909 /* buffer is not wrapped (or empty) */
11910 smp->ctx.a[0] = body;
11911 smp->ctx.a[1] = body + len;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11912
11913 /* Assume that the context is filled with NULL pointer
11914 * before the first call.
11915 * smp->ctx.a[2] = NULL;
11916 * smp->ctx.a[3] = NULL;
11917 */
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11918 }
11919 else {
11920 /* buffer is wrapped, we need to defragment it */
11921 smp->ctx.a[0] = body;
11922 smp->ctx.a[1] = body + block1;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11923 smp->ctx.a[2] = msg->chn->buf->data;
11924 smp->ctx.a[3] = msg->chn->buf->data + ( len - block1 );
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11925 }
11926 }
11927 return smp_fetch_param('&', name, name_len, args, smp, kw, private);
11928}
11929
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11930/* Return the signed integer value for the specified url parameter (see url_param
11931 * above).
11932 */
11933static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11934smp_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]11935{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11936 int ret = smp_fetch_url_param(args, smp, kw, private);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11937
11938 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11939 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11940 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]11941 }
11942
11943 return ret;
11944}
11945
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11946/* This produces a 32-bit hash of the concatenation of the first occurrence of
11947 * the Host header followed by the path component if it begins with a slash ('/').
11948 * This means that '*' will not be added, resulting in exactly the first Host
11949 * entry. If no Host header is found, then the path is used. The resulting value
11950 * is hashed using the url hash followed by a full avalanche hash and provides a
11951 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
11952 * high-traffic sites without having to store whole paths.
11953 * this differs from the base32 functions in that it includes the url parameters
11954 * as well as the path
11955 */
11956static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11957smp_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]11958{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11959 struct http_txn *txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11960 struct hdr_ctx ctx;
11961 unsigned int hash = 0;
11962 char *ptr, *beg, *end;
11963 int len;
11964
11965 CHECK_HTTP_MESSAGE_FIRST();
11966
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11967 txn = smp->strm->txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11968 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11969 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]11970 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
11971 ptr = ctx.line + ctx.val;
11972 len = ctx.vlen;
11973 while (len--)
11974 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
11975 }
11976
11977 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11978 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]11979 beg = http_get_path(txn);
11980 if (!beg)
11981 beg = end;
11982
11983 for (ptr = beg; ptr < end ; ptr++);
11984
11985 if (beg < ptr && *beg == '/') {
11986 while (beg < ptr)
11987 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
11988 }
11989 hash = full_hash(hash);
11990
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11991 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11992 smp->data.u.sint = hash;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11993 smp->flags = SMP_F_VOL_1ST;
11994 return 1;
11995}
11996
11997/* This concatenates the source address with the 32-bit hash of the Host and
11998 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
11999 * per-url counters. The result is a binary block from 8 to 20 bytes depending
12000 * on the source address length. The URL hash is stored before the address so
12001 * that in environments where IPv6 is insignificant, truncating the output to
12002 * 8 bytes would still work.
12003 */
12004static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]12005smp_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]12006{
12007 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12008 struct connection *cli_conn = objt_conn(smp->sess->origin);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12009
Dragan Dosendb5af612016-06-16 11:23:01 +0200[diff] [blame]12010 if (!cli_conn)
12011 return 0;
12012
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]12013 if (!smp_fetch_url32(args, smp, kw, private))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12014 return 0;
12015
12016 temp = get_trash_chunk();
Dragan Dosene5f41332016-06-16 11:08:08 +0200[diff] [blame]12017 *(unsigned int *)temp->str = htonl(smp->data.u.sint);
12018 temp->len += sizeof(unsigned int);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12019
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]12020 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12021 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]12022 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]12023 temp->len += 4;
12024 break;
12025 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]12026 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]12027 temp->len += 16;
12028 break;
12029 default:
12030 return 0;
12031 }
12032
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12033 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]12034 smp->data.type = SMP_T_BIN;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12035 return 1;
12036}
12037
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]12038/* This function is used to validate the arguments passed to any "hdr" fetch
12039 * keyword. These keywords support an optional positive or negative occurrence
12040 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
12041 * is assumed that the types are already the correct ones. Returns 0 on error,
12042 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
12043 * error message in case of error, that the caller is responsible for freeing.
12044 * The initial location must either be freeable or NULL.
12045 */
Thierry FOURNIER49f45af2014-12-08 19:50:43 +0100[diff] [blame]12046int val_hdr(struct arg *arg, char **err_msg)
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]12047{
12048 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]12049 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]12050 return 0;
12051 }
12052 return 1;
12053}
12054
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12055/* takes an UINT value on input supposed to represent the time since EPOCH,
12056 * adds an optional offset found in args[0] and emits a string representing
12057 * the date in RFC-1123/5322 format.
12058 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12059static int sample_conv_http_date(const struct arg *args, struct sample *smp, void *private)
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12060{
Cyril Bontéf78d8962016-01-22 19:40:28 +0100[diff] [blame]12061 const char day[7][4] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12062 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
12063 struct chunk *temp;
12064 struct tm *tm;
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12065 /* 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]12066 time_t curr_date = smp->data.u.sint & 0x007fffffffffffffLL;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12067
12068 /* add offset */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12069 if (args && (args[0].type == ARGT_SINT))
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12070 curr_date += args[0].data.sint;
12071
12072 tm = gmtime(&curr_date);
Thierry FOURNIERfac9ccf2015-07-08 00:15:20 +0200[diff] [blame]12073 if (!tm)
12074 return 0;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12075
12076 temp = get_trash_chunk();
12077 temp->len = snprintf(temp->str, temp->size - temp->len,
12078 "%s, %02d %s %04d %02d:%02d:%02d GMT",
12079 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
12080 tm->tm_hour, tm->tm_min, tm->tm_sec);
12081
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12082 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]12083 smp->data.type = SMP_T_STR;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12084 return 1;
12085}
12086
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12087/* Match language range with language tag. RFC2616 14.4:
12088 *
12089 * A language-range matches a language-tag if it exactly equals
12090 * the tag, or if it exactly equals a prefix of the tag such
12091 * that the first tag character following the prefix is "-".
12092 *
12093 * Return 1 if the strings match, else return 0.
12094 */
12095static inline int language_range_match(const char *range, int range_len,
12096 const char *tag, int tag_len)
12097{
12098 const char *end = range + range_len;
12099 const char *tend = tag + tag_len;
12100 while (range < end) {
12101 if (*range == '-' && tag == tend)
12102 return 1;
12103 if (*range != *tag || tag == tend)
12104 return 0;
12105 range++;
12106 tag++;
12107 }
12108 /* Return true only if the last char of the tag is matched. */
12109 return tag == tend;
12110}
12111
12112/* Arguments: The list of expected value, the number of parts returned and the separator */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12113static int sample_conv_q_prefered(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12114{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12115 const char *al = smp->data.u.str.str;
12116 const char *end = al + smp->data.u.str.len;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12117 const char *token;
12118 int toklen;
12119 int qvalue;
12120 const char *str;
12121 const char *w;
12122 int best_q = 0;
12123
12124 /* Set the constant to the sample, because the output of the
12125 * function will be peek in the constant configuration string.
12126 */
12127 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12128 smp->data.u.str.size = 0;
12129 smp->data.u.str.str = "";
12130 smp->data.u.str.len = 0;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12131
12132 /* Parse the accept language */
12133 while (1) {
12134
12135 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12136 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12137 al++;
12138 if (al >= end)
12139 break;
12140
12141 /* Start of the fisrt word. */
12142 token = al;
12143
12144 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12145 while (al < end && *al != ';' && *al != ',' && !isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12146 al++;
12147 if (al == token)
12148 goto expect_comma;
12149
12150 /* Length of the token. */
12151 toklen = al - token;
12152 qvalue = 1000;
12153
12154 /* Check if the token exists in the list. If the token not exists,
12155 * jump to the next token.
12156 */
12157 str = args[0].data.str.str;
12158 w = str;
12159 while (1) {
12160 if (*str == ';' || *str == '\0') {
12161 if (language_range_match(token, toklen, w, str-w))
12162 goto look_for_q;
12163 if (*str == '\0')
12164 goto expect_comma;
12165 w = str + 1;
12166 }
12167 str++;
12168 }
12169 goto expect_comma;
12170
12171look_for_q:
12172
12173 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12174 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12175 al++;
12176 if (al >= end)
12177 goto process_value;
12178
12179 /* If ',' is found, process the result */
12180 if (*al == ',')
12181 goto process_value;
12182
12183 /* If the character is different from ';', look
12184 * for the end of the header part in best effort.
12185 */
12186 if (*al != ';')
12187 goto expect_comma;
12188
12189 /* Assumes that the char is ';', now expect "q=". */
12190 al++;
12191
12192 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12193 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12194 al++;
12195 if (al >= end)
12196 goto process_value;
12197
12198 /* Expect 'q'. If no 'q', continue in best effort */
12199 if (*al != 'q')
12200 goto process_value;
12201 al++;
12202
12203 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12204 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12205 al++;
12206 if (al >= end)
12207 goto process_value;
12208
12209 /* Expect '='. If no '=', continue in best effort */
12210 if (*al != '=')
12211 goto process_value;
12212 al++;
12213
12214 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12215 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12216 al++;
12217 if (al >= end)
12218 goto process_value;
12219
12220 /* Parse the q value. */
12221 qvalue = parse_qvalue(al, &al);
12222
12223process_value:
12224
12225 /* If the new q value is the best q value, then store the associated
12226 * language in the response. If qvalue is the biggest value (1000),
12227 * break the process.
12228 */
12229 if (qvalue > best_q) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12230 smp->data.u.str.str = (char *)w;
12231 smp->data.u.str.len = str - w;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12232 if (qvalue >= 1000)
12233 break;
12234 best_q = qvalue;
12235 }
12236
12237expect_comma:
12238
12239 /* Expect comma or end. If the end is detected, quit the loop. */
12240 while (al < end && *al != ',')
12241 al++;
12242 if (al >= end)
12243 break;
12244
12245 /* Comma is found, jump it and restart the analyzer. */
12246 al++;
12247 }
12248
12249 /* Set default value if required. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12250 if (smp->data.u.str.len == 0 && args[1].type == ARGT_STR) {
12251 smp->data.u.str.str = args[1].data.str.str;
12252 smp->data.u.str.len = args[1].data.str.len;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12253 }
12254
12255 /* Return true only if a matching language was found. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12256 return smp->data.u.str.len != 0;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12257}
12258
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12259/* This fetch url-decode any input string. */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12260static int sample_conv_url_dec(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12261{
12262 /* If the constant flag is set or if not size is avalaible at
12263 * the end of the buffer, copy the string in other buffer
12264 * before decoding.
12265 */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12266 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]12267 struct chunk *str = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12268 memcpy(str->str, smp->data.u.str.str, smp->data.u.str.len);
12269 smp->data.u.str.str = str->str;
12270 smp->data.u.str.size = str->size;
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12271 smp->flags &= ~SMP_F_CONST;
12272 }
12273
12274 /* Add final \0 required by url_decode(), and convert the input string. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12275 smp->data.u.str.str[smp->data.u.str.len] = '\0';
12276 smp->data.u.str.len = url_decode(smp->data.u.str.str);
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12277 return 1;
12278}
12279
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12280static int smp_conv_req_capture(const struct arg *args, struct sample *smp, void *private)
12281{
12282 struct proxy *fe = strm_fe(smp->strm);
12283 int idx, i;
12284 struct cap_hdr *hdr;
12285 int len;
12286
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12287 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12288 return 0;
12289
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12290 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12291
12292 /* Check the availibity of the capture id. */
12293 if (idx > fe->nb_req_cap - 1)
12294 return 0;
12295
12296 /* Look for the original configuration. */
12297 for (hdr = fe->req_cap, i = fe->nb_req_cap - 1;
12298 hdr != NULL && i != idx ;
12299 i--, hdr = hdr->next);
12300 if (!hdr)
12301 return 0;
12302
12303 /* check for the memory allocation */
12304 if (smp->strm->req_cap[hdr->index] == NULL)
12305 smp->strm->req_cap[hdr->index] = pool_alloc2(hdr->pool);
12306 if (smp->strm->req_cap[hdr->index] == NULL)
12307 return 0;
12308
12309 /* Check length. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12310 len = smp->data.u.str.len;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12311 if (len > hdr->len)
12312 len = hdr->len;
12313
12314 /* Capture input data. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12315 memcpy(smp->strm->req_cap[idx], smp->data.u.str.str, len);
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12316 smp->strm->req_cap[idx][len] = '\0';
12317
12318 return 1;
12319}
12320
12321static int smp_conv_res_capture(const struct arg *args, struct sample *smp, void *private)
12322{
12323 struct proxy *fe = strm_fe(smp->strm);
12324 int idx, i;
12325 struct cap_hdr *hdr;
12326 int len;
12327
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12328 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12329 return 0;
12330
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12331 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12332
12333 /* Check the availibity of the capture id. */
12334 if (idx > fe->nb_rsp_cap - 1)
12335 return 0;
12336
12337 /* Look for the original configuration. */
12338 for (hdr = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
12339 hdr != NULL && i != idx ;
12340 i--, hdr = hdr->next);
12341 if (!hdr)
12342 return 0;
12343
12344 /* check for the memory allocation */
12345 if (smp->strm->res_cap[hdr->index] == NULL)
12346 smp->strm->res_cap[hdr->index] = pool_alloc2(hdr->pool);
12347 if (smp->strm->res_cap[hdr->index] == NULL)
12348 return 0;
12349
12350 /* Check length. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12351 len = smp->data.u.str.len;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12352 if (len > hdr->len)
12353 len = hdr->len;
12354
12355 /* Capture input data. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12356 memcpy(smp->strm->res_cap[idx], smp->data.u.str.str, len);
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12357 smp->strm->res_cap[idx][len] = '\0';
12358
12359 return 1;
12360}
12361
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12362/* This function executes one of the set-{method,path,query,uri} actions. It
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12363 * takes the string from the variable 'replace' with length 'len', then modifies
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12364 * the relevant part of the request line accordingly. Then it updates various
12365 * pointers to the next elements which were moved, and the total buffer length.
12366 * It finds the action to be performed in p[2], previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12367 * parse_set_req_line(). It returns 0 in case of success, -1 in case of internal
12368 * error, though this can be revisited when this code is finally exploited.
12369 *
12370 * 'action' can be '0' to replace method, '1' to replace path, '2' to replace
12371 * query string and 3 to replace uri.
12372 *
12373 * In query string case, the mark question '?' must be set at the start of the
12374 * string by the caller, event if the replacement query string is empty.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12375 */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12376int http_replace_req_line(int action, const char *replace, int len,
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12377 struct proxy *px, struct stream *s)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12378{
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12379 struct http_txn *txn = s->txn;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12380 char *cur_ptr, *cur_end;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12381 int offset = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12382 int delta;
12383
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12384 switch (action) {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12385 case 0: // method
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12386 cur_ptr = s->req.buf->p;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12387 cur_end = cur_ptr + txn->req.sl.rq.m_l;
12388
12389 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12390 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12391 txn->req.sl.rq.m_l += delta;
12392 txn->req.sl.rq.u += delta;
12393 txn->req.sl.rq.v += delta;
12394 break;
12395
12396 case 1: // path
12397 cur_ptr = http_get_path(txn);
12398 if (!cur_ptr)
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12399 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12400
12401 cur_end = cur_ptr;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12402 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]12403 cur_end++;
12404
12405 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12406 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12407 txn->req.sl.rq.u_l += delta;
12408 txn->req.sl.rq.v += delta;
12409 break;
12410
12411 case 2: // query
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12412 offset = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12413 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12414 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12415 while (cur_ptr < cur_end && *cur_ptr != '?')
12416 cur_ptr++;
12417
12418 /* skip the question mark or indicate that we must insert it
12419 * (but only if the format string is not empty then).
12420 */
12421 if (cur_ptr < cur_end)
12422 cur_ptr++;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12423 else if (len > 1)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12424 offset = 0;
12425
12426 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12427 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12428 txn->req.sl.rq.u_l += delta;
12429 txn->req.sl.rq.v += delta;
12430 break;
12431
12432 case 3: // uri
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12433 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12434 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12435
12436 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12437 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12438 txn->req.sl.rq.u_l += delta;
12439 txn->req.sl.rq.v += delta;
12440 break;
12441
12442 default:
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12443 return -1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12444 }
12445
12446 /* commit changes and adjust end of message */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12447 delta = buffer_replace2(s->req.buf, cur_ptr, cur_end, replace + offset, len - offset);
Thierry FOURNIER7f6192c2015-04-26 18:01:40 +0200[diff] [blame]12448 txn->req.sl.rq.l += delta;
12449 txn->hdr_idx.v[0].len += delta;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12450 http_msg_move_end(&txn->req, delta);
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12451 return 0;
12452}
12453
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12454/* This function replace the HTTP status code and the associated message. The
12455 * variable <status> contains the new status code. This function never fails.
12456 */
Robin H. Johnson52f5db22017-01-01 13:10:52 -0800[diff] [blame]12457void http_set_status(unsigned int status, const char *reason, struct stream *s)
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12458{
12459 struct http_txn *txn = s->txn;
12460 char *cur_ptr, *cur_end;
12461 int delta;
12462 char *res;
12463 int c_l;
Robin H. Johnson52f5db22017-01-01 13:10:52 -0800[diff] [blame]12464 const char *msg = reason;
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12465 int msg_len;
12466
12467 chunk_reset(&trash);
12468
12469 res = ultoa_o(status, trash.str, trash.size);
12470 c_l = res - trash.str;
12471
12472 trash.str[c_l] = ' ';
12473 trash.len = c_l + 1;
12474
Robin H. Johnson52f5db22017-01-01 13:10:52 -0800[diff] [blame]12475 /* Do we have a custom reason format string? */
12476 if (msg == NULL)
12477 msg = get_reason(status);
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12478 msg_len = strlen(msg);
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12479 strncpy(&trash.str[trash.len], msg, trash.size - trash.len);
12480 trash.len += msg_len;
12481
12482 cur_ptr = s->res.buf->p + txn->rsp.sl.st.c;
12483 cur_end = s->res.buf->p + txn->rsp.sl.st.r + txn->rsp.sl.st.r_l;
12484
12485 /* commit changes and adjust message */
12486 delta = buffer_replace2(s->res.buf, cur_ptr, cur_end, trash.str, trash.len);
12487
12488 /* adjust res line offsets and lengths */
12489 txn->rsp.sl.st.r += c_l - txn->rsp.sl.st.c_l;
12490 txn->rsp.sl.st.c_l = c_l;
12491 txn->rsp.sl.st.r_l = msg_len;
12492
12493 delta = trash.len - (cur_end - cur_ptr);
12494 txn->rsp.sl.st.l += delta;
12495 txn->hdr_idx.v[0].len += delta;
12496 http_msg_move_end(&txn->rsp, delta);
12497}
12498
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12499/* This function executes one of the set-{method,path,query,uri} actions. It
12500 * builds a string in the trash from the specified format string. It finds
Thierry FOURNIER3f4bc652015-08-26 16:23:34 +0200[diff] [blame]12501 * the action to be performed in <http.action>, previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12502 * parse_set_req_line(). The replacement action is excuted by the function
Thierry FOURNIER3f4bc652015-08-26 16:23:34 +0200[diff] [blame]12503 * http_action_set_req_line(). It always returns ACT_RET_CONT. If an error
12504 * occurs the action is canceled, but the rule processing continue.
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12505 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12506enum act_return http_action_set_req_line(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12507 struct session *sess, struct stream *s, int flags)
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12508{
12509 chunk_reset(&trash);
12510
12511 /* If we have to create a query string, prepare a '?'. */
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12512 if (rule->arg.http.action == 2)
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12513 trash.str[trash.len++] = '?';
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12514 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]12515
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12516 http_replace_req_line(rule->arg.http.action, trash.str, trash.len, px, s);
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12517 return ACT_RET_CONT;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12518}
12519
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12520/* This function is just a compliant action wrapper for "set-status". */
12521enum act_return action_http_set_status(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12522 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12523{
Robin H. Johnson52f5db22017-01-01 13:10:52 -0800[diff] [blame]12524 http_set_status(rule->arg.status.code, rule->arg.status.reason, s);
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12525 return ACT_RET_CONT;
12526}
12527
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12528/* parse an http-request action among :
12529 * set-method
12530 * set-path
12531 * set-query
12532 * set-uri
12533 *
12534 * All of them accept a single argument of type string representing a log-format.
12535 * The resulting rule makes use of arg->act.p[0..1] to store the log-format list
12536 * 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]12537 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12538 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12539enum act_parse_ret parse_set_req_line(const char **args, int *orig_arg, struct proxy *px,
12540 struct act_rule *rule, char **err)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12541{
12542 int cur_arg = *orig_arg;
12543
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12544 rule->action = ACT_CUSTOM;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12545
12546 switch (args[0][4]) {
12547 case 'm' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12548 rule->arg.http.action = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12549 rule->action_ptr = http_action_set_req_line;
12550 break;
12551 case 'p' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12552 rule->arg.http.action = 1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12553 rule->action_ptr = http_action_set_req_line;
12554 break;
12555 case 'q' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12556 rule->arg.http.action = 2;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12557 rule->action_ptr = http_action_set_req_line;
12558 break;
12559 case 'u' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12560 rule->arg.http.action = 3;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12561 rule->action_ptr = http_action_set_req_line;
12562 break;
12563 default:
12564 memprintf(err, "internal error: unhandled action '%s'", args[0]);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12565 return ACT_RET_PRS_ERR;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12566 }
12567
12568 if (!*args[cur_arg] ||
12569 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
12570 memprintf(err, "expects exactly 1 argument <format>");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12571 return ACT_RET_PRS_ERR;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12572 }
12573
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12574 LIST_INIT(&rule->arg.http.logfmt);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12575 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]12576 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]12577 (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]12578 return ACT_RET_PRS_ERR;
12579 }
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12580
12581 (*orig_arg)++;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12582 return ACT_RET_PRS_OK;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12583}
12584
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12585/* parse set-status action:
12586 * This action accepts a single argument of type int representing
12587 * an http status code. It returns ACT_RET_PRS_OK on success,
12588 * ACT_RET_PRS_ERR on error.
12589 */
12590enum act_parse_ret parse_http_set_status(const char **args, int *orig_arg, struct proxy *px,
12591 struct act_rule *rule, char **err)
12592{
12593 char *error;
12594
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12595 rule->action = ACT_CUSTOM;
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12596 rule->action_ptr = action_http_set_status;
12597
12598 /* Check if an argument is available */
12599 if (!*args[*orig_arg]) {
Robin H. Johnson52f5db22017-01-01 13:10:52 -0800[diff] [blame]12600 memprintf(err, "expects 1 argument: <status>; or 3 arguments: <status> reason <fmt>");
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12601 return ACT_RET_PRS_ERR;
12602 }
12603
12604 /* convert status code as integer */
12605 rule->arg.status.code = strtol(args[*orig_arg], &error, 10);
12606 if (*error != '\0' || rule->arg.status.code < 100 || rule->arg.status.code > 999) {
12607 memprintf(err, "expects an integer status code between 100 and 999");
12608 return ACT_RET_PRS_ERR;
12609 }
12610
12611 (*orig_arg)++;
Robin H. Johnson52f5db22017-01-01 13:10:52 -0800[diff] [blame]12612
12613 /* set custom reason string */
12614 rule->arg.status.reason = NULL; // If null, we use the default reason for the status code.
12615 if (*args[*orig_arg] && strcmp(args[*orig_arg], "reason") == 0 &&
12616 (*args[*orig_arg + 1] && strcmp(args[*orig_arg + 1], "if") != 0 && strcmp(args[*orig_arg + 1], "unless") != 0)) {
12617 (*orig_arg)++;
12618 rule->arg.status.reason = strdup(args[*orig_arg]);
12619 (*orig_arg)++;
12620 }
12621
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12622 return ACT_RET_PRS_OK;
12623}
12624
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12625/* This function executes the "capture" action. It executes a fetch expression,
12626 * turns the result into a string and puts it in a capture slot. It always
12627 * returns 1. If an error occurs the action is cancelled, but the rule
12628 * processing continues.
12629 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12630enum act_return http_action_req_capture(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12631 struct session *sess, struct stream *s, int flags)
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12632{
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12633 struct sample *key;
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12634 struct cap_hdr *h = rule->arg.cap.hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12635 char **cap = s->req_cap;
12636 int len;
12637
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12638 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]12639 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12640 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12641
12642 if (cap[h->index] == NULL)
12643 cap[h->index] = pool_alloc2(h->pool);
12644
12645 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12646 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12647
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12648 len = key->data.u.str.len;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12649 if (len > h->len)
12650 len = h->len;
12651
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12652 memcpy(cap[h->index], key->data.u.str.str, len);
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12653 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12654 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12655}
12656
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12657/* This function executes the "capture" action and store the result in a
12658 * capture slot if exists. It executes a fetch expression, turns the result
12659 * into a string and puts it in a capture slot. It always returns 1. If an
12660 * error occurs the action is cancelled, but the rule processing continues.
12661 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12662enum 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]12663 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12664{
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12665 struct sample *key;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12666 struct cap_hdr *h;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12667 char **cap = s->req_cap;
12668 struct proxy *fe = strm_fe(s);
12669 int len;
12670 int i;
12671
12672 /* Look for the original configuration. */
12673 for (h = fe->req_cap, i = fe->nb_req_cap - 1;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12674 h != NULL && i != rule->arg.capid.idx ;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12675 i--, h = h->next);
12676 if (!h)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12677 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12678
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12679 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]12680 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12681 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12682
12683 if (cap[h->index] == NULL)
12684 cap[h->index] = pool_alloc2(h->pool);
12685
12686 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12687 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12688
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12689 len = key->data.u.str.len;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12690 if (len > h->len)
12691 len = h->len;
12692
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12693 memcpy(cap[h->index], key->data.u.str.str, len);
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12694 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12695 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12696}
12697
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12698/* parse an "http-request capture" action. It takes a single argument which is
12699 * a sample fetch expression. It stores the expression into arg->act.p[0] and
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12700 * the allocated hdr_cap struct or the preallocated "id" into arg->act.p[1].
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 Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12702 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12703enum act_parse_ret parse_http_req_capture(const char **args, int *orig_arg, struct proxy *px,
12704 struct act_rule *rule, char **err)
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12705{
12706 struct sample_expr *expr;
12707 struct cap_hdr *hdr;
12708 int cur_arg;
Willy Tarreau3986ac12015-05-08 16:13:42 +0200[diff] [blame]12709 int len = 0;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12710
12711 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12712 if (strcmp(args[cur_arg], "if") == 0 ||
12713 strcmp(args[cur_arg], "unless") == 0)
12714 break;
12715
12716 if (cur_arg < *orig_arg + 3) {
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12717 memprintf(err, "expects <expression> [ 'len' <length> | id <idx> ]");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12718 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12719 }
12720
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12721 cur_arg = *orig_arg;
12722 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12723 if (!expr)
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12724 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12725
12726 if (!(expr->fetch->val & SMP_VAL_FE_HRQ_HDR)) {
12727 memprintf(err,
12728 "fetch method '%s' extracts information from '%s', none of which is available here",
12729 args[cur_arg-1], sample_src_names(expr->fetch->use));
12730 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12731 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12732 }
12733
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12734 if (!args[cur_arg] || !*args[cur_arg]) {
12735 memprintf(err, "expects 'len or 'id'");
12736 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12737 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12738 }
12739
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12740 if (strcmp(args[cur_arg], "len") == 0) {
12741 cur_arg++;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12742
12743 if (!(px->cap & PR_CAP_FE)) {
12744 memprintf(err, "proxy '%s' has no frontend capability", px->id);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12745 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12746 }
12747
12748 proxy->conf.args.ctx = ARGC_CAP;
12749
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12750 if (!args[cur_arg]) {
12751 memprintf(err, "missing length value");
12752 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12753 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12754 }
12755 /* we copy the table name for now, it will be resolved later */
12756 len = atoi(args[cur_arg]);
12757 if (len <= 0) {
12758 memprintf(err, "length must be > 0");
12759 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12760 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12761 }
12762 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12763
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12764 if (!len) {
12765 memprintf(err, "a positive 'len' argument is mandatory");
12766 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12767 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12768 }
12769
Vincent Bernat02779b62016-04-03 13:48:43 +0200[diff] [blame]12770 hdr = calloc(1, sizeof(*hdr));
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12771 hdr->next = px->req_cap;
12772 hdr->name = NULL; /* not a header capture */
12773 hdr->namelen = 0;
12774 hdr->len = len;
12775 hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
12776 hdr->index = px->nb_req_cap++;
12777
12778 px->req_cap = hdr;
12779 px->to_log |= LW_REQHDR;
12780
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12781 rule->action = ACT_CUSTOM;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12782 rule->action_ptr = http_action_req_capture;
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12783 rule->arg.cap.expr = expr;
12784 rule->arg.cap.hdr = hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12785 }
12786
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12787 else if (strcmp(args[cur_arg], "id") == 0) {
12788 int id;
12789 char *error;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12790
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12791 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12792
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12793 if (!args[cur_arg]) {
12794 memprintf(err, "missing id value");
12795 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12796 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12797 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12798
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12799 id = strtol(args[cur_arg], &error, 10);
12800 if (*error != '\0') {
12801 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12802 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12803 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12804 }
12805 cur_arg++;
12806
12807 proxy->conf.args.ctx = ARGC_CAP;
12808
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12809 rule->action = ACT_CUSTOM;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12810 rule->action_ptr = http_action_req_capture_by_id;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12811 rule->arg.capid.expr = expr;
12812 rule->arg.capid.idx = id;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12813 }
12814
12815 else {
12816 memprintf(err, "expects 'len' or 'id', found '%s'", args[cur_arg]);
12817 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12818 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12819 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12820
12821 *orig_arg = cur_arg;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12822 return ACT_RET_PRS_OK;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12823}
12824
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12825/* This function executes the "capture" action and store the result in a
12826 * capture slot if exists. It executes a fetch expression, turns the result
12827 * into a string and puts it in a capture slot. It always returns 1. If an
12828 * error occurs the action is cancelled, but the rule processing continues.
12829 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12830enum 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]12831 struct session *sess, struct stream *s, int flags)
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12832{
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12833 struct sample *key;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12834 struct cap_hdr *h;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12835 char **cap = s->res_cap;
12836 struct proxy *fe = strm_fe(s);
12837 int len;
12838 int i;
12839
12840 /* Look for the original configuration. */
12841 for (h = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12842 h != NULL && i != rule->arg.capid.idx ;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12843 i--, h = h->next);
12844 if (!h)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12845 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12846
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12847 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]12848 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12849 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12850
12851 if (cap[h->index] == NULL)
12852 cap[h->index] = pool_alloc2(h->pool);
12853
12854 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12855 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12856
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12857 len = key->data.u.str.len;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12858 if (len > h->len)
12859 len = h->len;
12860
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12861 memcpy(cap[h->index], key->data.u.str.str, len);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12862 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12863 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12864}
12865
12866/* parse an "http-response capture" action. It takes a single argument which is
12867 * a sample fetch expression. It stores the expression into arg->act.p[0] and
12868 * the allocated hdr_cap struct od the preallocated id into arg->act.p[1].
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12869 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12870 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12871enum act_parse_ret parse_http_res_capture(const char **args, int *orig_arg, struct proxy *px,
12872 struct act_rule *rule, char **err)
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12873{
12874 struct sample_expr *expr;
12875 int cur_arg;
12876 int id;
12877 char *error;
12878
12879 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12880 if (strcmp(args[cur_arg], "if") == 0 ||
12881 strcmp(args[cur_arg], "unless") == 0)
12882 break;
12883
12884 if (cur_arg < *orig_arg + 3) {
Willy Tarreau29bdb1c2016-06-24 15:36:34 +0200[diff] [blame]12885 memprintf(err, "expects <expression> id <idx>");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12886 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12887 }
12888
12889 cur_arg = *orig_arg;
12890 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12891 if (!expr)
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12892 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12893
12894 if (!(expr->fetch->val & SMP_VAL_FE_HRS_HDR)) {
12895 memprintf(err,
12896 "fetch method '%s' extracts information from '%s', none of which is available here",
12897 args[cur_arg-1], sample_src_names(expr->fetch->use));
12898 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12899 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12900 }
12901
12902 if (!args[cur_arg] || !*args[cur_arg]) {
Willy Tarreau29bdb1c2016-06-24 15:36:34 +0200[diff] [blame]12903 memprintf(err, "expects 'id'");
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12904 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12905 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12906 }
12907
12908 if (strcmp(args[cur_arg], "id") != 0) {
12909 memprintf(err, "expects 'id', found '%s'", args[cur_arg]);
12910 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12911 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12912 }
12913
12914 cur_arg++;
12915
12916 if (!args[cur_arg]) {
12917 memprintf(err, "missing id value");
12918 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12919 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12920 }
12921
12922 id = strtol(args[cur_arg], &error, 10);
12923 if (*error != '\0') {
12924 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12925 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12926 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12927 }
12928 cur_arg++;
12929
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12930 proxy->conf.args.ctx = ARGC_CAP;
12931
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12932 rule->action = ACT_CUSTOM;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12933 rule->action_ptr = http_action_res_capture_by_id;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12934 rule->arg.capid.expr = expr;
12935 rule->arg.capid.idx = id;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12936
12937 *orig_arg = cur_arg;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12938 return ACT_RET_PRS_OK;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12939}
12940
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12941/*
12942 * Return the struct http_req_action_kw associated to a keyword.
12943 */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12944struct action_kw *action_http_req_custom(const char *kw)
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12945{
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]12946 return action_lookup(&http_req_keywords.list, kw);
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12947}
12948
12949/*
12950 * Return the struct http_res_action_kw associated to a keyword.
12951 */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12952struct action_kw *action_http_res_custom(const char *kw)
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12953{
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]12954 return action_lookup(&http_res_keywords.list, kw);
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12955}
12956
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12957
12958/* "show errors" handler for the CLI. Returns 0 if wants to continue, 1 to stop
12959 * now.
12960 */
12961static int cli_parse_show_errors(char **args, struct appctx *appctx, void *private)
12962{
12963 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
12964 return 1;
12965
Willy Tarreau234ba2d2016-11-25 08:39:10 +0100[diff] [blame]12966 if (*args[2]) {
12967 struct proxy *px;
12968
12969 px = proxy_find_by_name(args[2], 0, 0);
12970 if (px)
12971 appctx->ctx.errors.iid = px->uuid;
12972 else
12973 appctx->ctx.errors.iid = atoi(args[2]);
12974
12975 if (!appctx->ctx.errors.iid) {
12976 appctx->ctx.cli.msg = "No such proxy.\n";
12977 appctx->st0 = CLI_ST_PRINT;
12978 return 1;
12979 }
12980 }
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12981 else
Willy Tarreau234ba2d2016-11-25 08:39:10 +0100[diff] [blame]12982 appctx->ctx.errors.iid = -1; // dump all proxies
12983
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]12984 appctx->ctx.errors.flag = 0;
12985 if (strcmp(args[3], "request") == 0)
12986 appctx->ctx.errors.flag |= 4; // ignore response
12987 else if (strcmp(args[3], "response") == 0)
12988 appctx->ctx.errors.flag |= 2; // ignore request
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12989 appctx->ctx.errors.px = NULL;
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12990 return 0;
12991}
12992
12993/* This function dumps all captured errors onto the stream interface's
12994 * read buffer. It returns 0 if the output buffer is full and it needs
12995 * to be called again, otherwise non-zero.
12996 */
12997static int cli_io_handler_show_errors(struct appctx *appctx)
12998{
12999 struct stream_interface *si = appctx->owner;
13000 extern const char *monthname[12];
13001
13002 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW)))
13003 return 1;
13004
13005 chunk_reset(&trash);
13006
13007 if (!appctx->ctx.errors.px) {
13008 /* the function had not been called yet, let's prepare the
13009 * buffer for a response.
13010 */
13011 struct tm tm;
13012
13013 get_localtime(date.tv_sec, &tm);
13014 chunk_appendf(&trash, "Total events captured on [%02d/%s/%04d:%02d:%02d:%02d.%03d] : %u\n",
13015 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
13016 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(date.tv_usec/1000),
13017 error_snapshot_id);
13018
13019 if (bi_putchk(si_ic(si), &trash) == -1) {
13020 /* Socket buffer full. Let's try again later from the same point */
13021 si_applet_cant_put(si);
13022 return 0;
13023 }
13024
13025 appctx->ctx.errors.px = proxy;
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13026 appctx->ctx.errors.bol = 0;
13027 appctx->ctx.errors.ptr = -1;
13028 }
13029
13030 /* we have two inner loops here, one for the proxy, the other one for
13031 * the buffer.
13032 */
13033 while (appctx->ctx.errors.px) {
13034 struct error_snapshot *es;
13035
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]13036 if ((appctx->ctx.errors.flag & 1) == 0) {
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13037 es = &appctx->ctx.errors.px->invalid_req;
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]13038 if (appctx->ctx.errors.flag & 2) // skip req
13039 goto next;
13040 }
13041 else {
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13042 es = &appctx->ctx.errors.px->invalid_rep;
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]13043 if (appctx->ctx.errors.flag & 4) // skip resp
13044 goto next;
13045 }
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13046
13047 if (!es->when.tv_sec)
13048 goto next;
13049
13050 if (appctx->ctx.errors.iid >= 0 &&
13051 appctx->ctx.errors.px->uuid != appctx->ctx.errors.iid &&
13052 es->oe->uuid != appctx->ctx.errors.iid)
13053 goto next;
13054
13055 if (appctx->ctx.errors.ptr < 0) {
13056 /* just print headers now */
13057
13058 char pn[INET6_ADDRSTRLEN];
13059 struct tm tm;
13060 int port;
13061
13062 get_localtime(es->when.tv_sec, &tm);
13063 chunk_appendf(&trash, " \n[%02d/%s/%04d:%02d:%02d:%02d.%03d]",
13064 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
13065 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(es->when.tv_usec/1000));
13066
13067 switch (addr_to_str(&es->src, pn, sizeof(pn))) {
13068 case AF_INET:
13069 case AF_INET6:
13070 port = get_host_port(&es->src);
13071 break;
13072 default:
13073 port = 0;
13074 }
13075
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]13076 switch (appctx->ctx.errors.flag & 1) {
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13077 case 0:
13078 chunk_appendf(&trash,
13079 " frontend %s (#%d): invalid request\n"
13080 " backend %s (#%d)",
13081 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
13082 (es->oe->cap & PR_CAP_BE) ? es->oe->id : "<NONE>",
13083 (es->oe->cap & PR_CAP_BE) ? es->oe->uuid : -1);
13084 break;
13085 case 1:
13086 chunk_appendf(&trash,
13087 " backend %s (#%d): invalid response\n"
13088 " frontend %s (#%d)",
13089 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
13090 es->oe->id, es->oe->uuid);
13091 break;
13092 }
13093
13094 chunk_appendf(&trash,
13095 ", server %s (#%d), event #%u\n"
13096 " src %s:%d, session #%d, session flags 0x%08x\n"
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]13097 " HTTP msg state %s(%d), msg flags 0x%08x, tx flags 0x%08x\n"
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13098 " HTTP chunk len %lld bytes, HTTP body len %lld bytes\n"
13099 " buffer flags 0x%08x, out %d bytes, total %lld bytes\n"
13100 " pending %d bytes, wrapping at %d, error at position %d:\n \n",
13101 es->srv ? es->srv->id : "<NONE>", es->srv ? es->srv->puid : -1,
13102 es->ev_id,
13103 pn, port, es->sid, es->s_flags,
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]13104 http_msg_state_str(es->state), es->state, es->m_flags, es->t_flags,
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13105 es->m_clen, es->m_blen,
13106 es->b_flags, es->b_out, es->b_tot,
13107 es->len, es->b_wrap, es->pos);
13108
13109 if (bi_putchk(si_ic(si), &trash) == -1) {
13110 /* Socket buffer full. Let's try again later from the same point */
13111 si_applet_cant_put(si);
13112 return 0;
13113 }
13114 appctx->ctx.errors.ptr = 0;
13115 appctx->ctx.errors.sid = es->sid;
13116 }
13117
13118 if (appctx->ctx.errors.sid != es->sid) {
13119 /* the snapshot changed while we were dumping it */
13120 chunk_appendf(&trash,
13121 " WARNING! update detected on this snapshot, dump interrupted. Please re-check!\n");
13122 if (bi_putchk(si_ic(si), &trash) == -1) {
13123 si_applet_cant_put(si);
13124 return 0;
13125 }
13126 goto next;
13127 }
13128
13129 /* OK, ptr >= 0, so we have to dump the current line */
13130 while (es->buf && appctx->ctx.errors.ptr < es->len && appctx->ctx.errors.ptr < global.tune.bufsize) {
13131 int newptr;
13132 int newline;
13133
13134 newline = appctx->ctx.errors.bol;
13135 newptr = dump_text_line(&trash, es->buf, global.tune.bufsize, es->len, &newline, appctx->ctx.errors.ptr);
13136 if (newptr == appctx->ctx.errors.ptr)
13137 return 0;
13138
13139 if (bi_putchk(si_ic(si), &trash) == -1) {
13140 /* Socket buffer full. Let's try again later from the same point */
13141 si_applet_cant_put(si);
13142 return 0;
13143 }
13144 appctx->ctx.errors.ptr = newptr;
13145 appctx->ctx.errors.bol = newline;
13146 };
13147 next:
13148 appctx->ctx.errors.bol = 0;
13149 appctx->ctx.errors.ptr = -1;
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]13150 appctx->ctx.errors.flag ^= 1;
13151 if (!(appctx->ctx.errors.flag & 1))
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13152 appctx->ctx.errors.px = appctx->ctx.errors.px->next;
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13153 }
13154
13155 /* dump complete */
13156 return 1;
13157}
13158
13159/* register cli keywords */
13160static struct cli_kw_list cli_kws = {{ },{
13161 { { "show", "errors", NULL },
13162 "show errors : report last request and response errors for each proxy",
13163 cli_parse_show_errors, cli_io_handler_show_errors, NULL,
13164 },
13165 {{},}
13166}};
13167
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]13168/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13169/* All supported ACL keywords must be declared here. */
13170/************************************************************************/
13171
13172/* Note: must not be declared <const> as its list will be overwritten.
13173 * Please take care of keeping this list alphabetically sorted.
13174 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]13175static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13176 { "base", "base", PAT_MATCH_STR },
13177 { "base_beg", "base", PAT_MATCH_BEG },
13178 { "base_dir", "base", PAT_MATCH_DIR },
13179 { "base_dom", "base", PAT_MATCH_DOM },
13180 { "base_end", "base", PAT_MATCH_END },
13181 { "base_len", "base", PAT_MATCH_LEN },
13182 { "base_reg", "base", PAT_MATCH_REG },
13183 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]13184
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13185 { "cook", "req.cook", PAT_MATCH_STR },
13186 { "cook_beg", "req.cook", PAT_MATCH_BEG },
13187 { "cook_dir", "req.cook", PAT_MATCH_DIR },
13188 { "cook_dom", "req.cook", PAT_MATCH_DOM },
13189 { "cook_end", "req.cook", PAT_MATCH_END },
13190 { "cook_len", "req.cook", PAT_MATCH_LEN },
13191 { "cook_reg", "req.cook", PAT_MATCH_REG },
13192 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13193
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13194 { "hdr", "req.hdr", PAT_MATCH_STR },
13195 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
13196 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
13197 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
13198 { "hdr_end", "req.hdr", PAT_MATCH_END },
13199 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
13200 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
13201 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13202
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13203 /* these two declarations uses strings with list storage (in place
13204 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
13205 * and delete functions are relative to the list management. The parse
13206 * and match method are related to the corresponding fetch methods. This
13207 * is very particular ACL declaration mode.
13208 */
13209 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
13210 { "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]13211
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13212 { "path", "path", PAT_MATCH_STR },
13213 { "path_beg", "path", PAT_MATCH_BEG },
13214 { "path_dir", "path", PAT_MATCH_DIR },
13215 { "path_dom", "path", PAT_MATCH_DOM },
13216 { "path_end", "path", PAT_MATCH_END },
13217 { "path_len", "path", PAT_MATCH_LEN },
13218 { "path_reg", "path", PAT_MATCH_REG },
13219 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13220
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13221 { "req_ver", "req.ver", PAT_MATCH_STR },
13222 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13223
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13224 { "scook", "res.cook", PAT_MATCH_STR },
13225 { "scook_beg", "res.cook", PAT_MATCH_BEG },
13226 { "scook_dir", "res.cook", PAT_MATCH_DIR },
13227 { "scook_dom", "res.cook", PAT_MATCH_DOM },
13228 { "scook_end", "res.cook", PAT_MATCH_END },
13229 { "scook_len", "res.cook", PAT_MATCH_LEN },
13230 { "scook_reg", "res.cook", PAT_MATCH_REG },
13231 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13232
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13233 { "shdr", "res.hdr", PAT_MATCH_STR },
13234 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
13235 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
13236 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
13237 { "shdr_end", "res.hdr", PAT_MATCH_END },
13238 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
13239 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
13240 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13241
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13242 { "url", "url", PAT_MATCH_STR },
13243 { "url_beg", "url", PAT_MATCH_BEG },
13244 { "url_dir", "url", PAT_MATCH_DIR },
13245 { "url_dom", "url", PAT_MATCH_DOM },
13246 { "url_end", "url", PAT_MATCH_END },
13247 { "url_len", "url", PAT_MATCH_LEN },
13248 { "url_reg", "url", PAT_MATCH_REG },
13249 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13250
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13251 { "urlp", "urlp", PAT_MATCH_STR },
13252 { "urlp_beg", "urlp", PAT_MATCH_BEG },
13253 { "urlp_dir", "urlp", PAT_MATCH_DIR },
13254 { "urlp_dom", "urlp", PAT_MATCH_DOM },
13255 { "urlp_end", "urlp", PAT_MATCH_END },
13256 { "urlp_len", "urlp", PAT_MATCH_LEN },
13257 { "urlp_reg", "urlp", PAT_MATCH_REG },
13258 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13259
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]13260 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13261}};
13262
13263/************************************************************************/
13264/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]13265/************************************************************************/
13266/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]13267static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13268 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13269 { "base32", smp_fetch_base32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13270 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
13271
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]13272 /* capture are allocated and are permanent in the stream */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]13273 { "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]13274
13275 /* retrieve these captures from the HTTP logs */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]13276 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
13277 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
13278 { "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]13279
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]13280 { "capture.res.hdr", smp_fetch_capture_header_res, ARG1(1,SINT), NULL, SMP_T_STR, SMP_USE_HRSHP },
13281 { "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]13282
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13283 /* cookie is valid in both directions (eg: for "stick ...") but cook*
13284 * are only here to match the ACL's name, are request-only and are used
13285 * for ACL compatibility only.
13286 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13287 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
13288 { "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]13289 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
13290 { "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]13291
13292 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
13293 * only here to match the ACL's name, are request-only and are used for
13294 * ACL compatibility only.
13295 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13296 { "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]13297 { "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]13298 { "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]13299 { "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]13300
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]13301 { "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]13302 { "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]13303 { "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]13304 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13305 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]13306 { "query", smp_fetch_query, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13307
13308 /* HTTP protocol on the request path */
13309 { "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]13310 { "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]13311
13312 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13313 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
13314 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13315
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]13316 { "req.body", smp_fetch_body, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13317 { "req.body_len", smp_fetch_body_len, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
13318 { "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]13319 { "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]13320
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13321 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13322 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
13323 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13324
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13325 /* 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]13326 { "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]13327 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
13328 { "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]13329
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13330 { "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]13331 { "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]13332 { "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]13333 { "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]13334 { "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]13335 { "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]13336 { "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]13337
13338 /* 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]13339 { "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]13340 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
13341 { "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]13342
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13343 { "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]13344 { "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]13345 { "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]13346 { "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]13347 { "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]13348 { "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]13349 { "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]13350
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13351 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13352 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13353 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
13354 { "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]13355 { "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]13356
13357 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13358 { "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]13359 { "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]13360 { "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]13361 { "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]13362
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13363 { "status", smp_fetch_stcode, 0, NULL, SMP_T_SINT, SMP_USE_HRSHP },
Thierry Fournier0e00dca2016-04-07 15:47:40 +0200[diff] [blame]13364 { "unique-id", smp_fetch_uniqueid, 0, NULL, SMP_T_STR, SMP_SRC_L4SRV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13365 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13366 { "url32", smp_fetch_url32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]13367 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13368 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13369 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]13370 { "url_param", smp_fetch_url_param, ARG2(0,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
13371 { "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]13372 { "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]13373 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]13374}};
13375
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13376
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13377/************************************************************************/
13378/* All supported converter keywords must be declared here. */
13379/************************************************************************/
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13380/* Note: must not be declared <const> as its list will be overwritten */
13381static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13382 { "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]13383 { "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]13384 { "capture-req", smp_conv_req_capture, ARG1(1,SINT), NULL, SMP_T_STR, SMP_T_STR},
13385 { "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]13386 { "url_dec", sample_conv_url_dec, 0, NULL, SMP_T_STR, SMP_T_STR},
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13387 { NULL, NULL, 0, 0, 0 },
13388}};
13389
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]13390
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13391/************************************************************************/
13392/* All supported http-request action keywords must be declared here. */
13393/************************************************************************/
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]13394struct action_kw_list http_req_actions = {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13395 .kw = {
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]13396 { "capture", parse_http_req_capture },
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13397 { "set-method", parse_set_req_line },
13398 { "set-path", parse_set_req_line },
13399 { "set-query", parse_set_req_line },
13400 { "set-uri", parse_set_req_line },
Willy Tarreaucb703b02015-04-03 09:52:01 +0200[diff] [blame]13401 { NULL, NULL }
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13402 }
13403};
13404
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]13405struct action_kw_list http_res_actions = {
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13406 .kw = {
13407 { "capture", parse_http_res_capture },
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]13408 { "set-status", parse_http_set_status },
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13409 { NULL, NULL }
13410 }
13411};
13412
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13413__attribute__((constructor))
13414static void __http_protocol_init(void)
13415{
13416 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]13417 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13418 sample_register_convs(&sample_conv_kws);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13419 http_req_keywords_register(&http_req_actions);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13420 http_res_keywords_register(&http_res_actions);
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13421 cli_register_kw(&cli_kws);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13422}
13423
13424
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]13425/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]13426 * Local variables:
13427 * c-indent-level: 8
13428 * c-basic-offset: 8
13429 * End:
13430 */