Gitiles
Code Review Sign In
git01.mediatek.com / haproxy / 752cc49728a2dc1e640aa0353ff8f66cfbf988e5 / . / src / proto_http.c
blob: c0f57c5210455d8c9dc200326f04bbb2fb6770f5 [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1/*
2 * HTTP protocol analyzer
3 *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4 * Copyright 2000-2011 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <ctype.h>
14#include <errno.h>
15#include <fcntl.h>
16#include <stdio.h>
17#include <stdlib.h>
18#include <string.h>
19#include <syslog.h>
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]20#include <time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]21
22#include <sys/socket.h>
23#include <sys/stat.h>
24#include <sys/types.h>
25
Willy Tarreaub05405a2012-01-23 15:35:52 +0100[diff] [blame]26#include <netinet/tcp.h>
27
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]28#include <common/base64.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]29#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]30#include <common/compat.h>
31#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +0100[diff] [blame]32#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]33#include <common/memory.h>
34#include <common/mini-clist.h>
35#include <common/standard.h>
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]36#include <common/ticks.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]37#include <common/time.h>
38#include <common/uri_auth.h>
39#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]40
41#include <types/capture.h>
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]42#include <types/cli.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]43#include <types/filters.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]44#include <types/global.h>
William Lallemand9ed62032016-11-21 17:49:11 +0100[diff] [blame]45#include <types/stats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]46
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]47#include <proto/acl.h>
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]48#include <proto/action.h>
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]49#include <proto/arg.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]50#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]51#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]52#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]53#include <proto/checks.h>
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]54#include <proto/cli.h>
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]55#include <proto/compression.h>
William Lallemand9ed62032016-11-21 17:49:11 +0100[diff] [blame]56#include <proto/stats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]57#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]58#include <proto/filters.h>
Willy Tarreau03fa5df2010-05-24 21:02:37 +0200[diff] [blame]59#include <proto/frontend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]60#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]61#include <proto/hdr_idx.h>
Thierry FOURNIERed66c292013-11-28 11:05:19 +0100[diff] [blame]62#include <proto/pattern.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]63#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]64#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]65#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]66#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]67#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]68#include <proto/server.h>
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]69#include <proto/stream.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]70#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]71#include <proto/task.h>
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]72#include <proto/pattern.h>
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]73#include <proto/vars.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]74
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]75const char HTTP_100[] =
76 "HTTP/1.1 100 Continue\r\n\r\n";
77
78const struct chunk http_100_chunk = {
79 .str = (char *)&HTTP_100,
80 .len = sizeof(HTTP_100)-1
81};
82
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]83/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]84const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]85 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]86 "Content-length: 0\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]87 "Location: "; /* not terminated since it will be concatenated with the URL */
88
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]89const char *HTTP_302 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]90 "HTTP/1.1 302 Found\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]91 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]92 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]93 "Location: "; /* not terminated since it will be concatenated with the URL */
94
95/* same as 302 except that the browser MUST retry with the GET method */
96const char *HTTP_303 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]97 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]98 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]99 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]100 "Location: "; /* not terminated since it will be concatenated with the URL */
101
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]102
103/* same as 302 except that the browser MUST retry with the same method */
104const char *HTTP_307 =
105 "HTTP/1.1 307 Temporary Redirect\r\n"
106 "Cache-Control: no-cache\r\n"
107 "Content-length: 0\r\n"
108 "Location: "; /* not terminated since it will be concatenated with the URL */
109
110/* same as 301 except that the browser MUST retry with the same method */
111const char *HTTP_308 =
112 "HTTP/1.1 308 Permanent Redirect\r\n"
113 "Content-length: 0\r\n"
114 "Location: "; /* not terminated since it will be concatenated with the URL */
115
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]116/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
117const char *HTTP_401_fmt =
118 "HTTP/1.0 401 Unauthorized\r\n"
119 "Cache-Control: no-cache\r\n"
120 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]121 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]122 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
123 "\r\n"
124 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
125
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]126const char *HTTP_407_fmt =
127 "HTTP/1.0 407 Unauthorized\r\n"
128 "Cache-Control: no-cache\r\n"
129 "Connection: close\r\n"
130 "Content-Type: text/html\r\n"
131 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
132 "\r\n"
Godbach1f1fae62014-12-17 16:32:05 +0800[diff] [blame]133 "<html><body><h1>407 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]134
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]135
136const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]137 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]138 [HTTP_ERR_400] = 400,
139 [HTTP_ERR_403] = 403,
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]140 [HTTP_ERR_405] = 405,
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]141 [HTTP_ERR_408] = 408,
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]142 [HTTP_ERR_429] = 429,
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]143 [HTTP_ERR_500] = 500,
144 [HTTP_ERR_502] = 502,
145 [HTTP_ERR_503] = 503,
146 [HTTP_ERR_504] = 504,
147};
148
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]149static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]150 [HTTP_ERR_200] =
151 "HTTP/1.0 200 OK\r\n"
152 "Cache-Control: no-cache\r\n"
153 "Connection: close\r\n"
154 "Content-Type: text/html\r\n"
155 "\r\n"
156 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
157
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]158 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]159 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]160 "Cache-Control: no-cache\r\n"
161 "Connection: close\r\n"
162 "Content-Type: text/html\r\n"
163 "\r\n"
164 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
165
166 [HTTP_ERR_403] =
167 "HTTP/1.0 403 Forbidden\r\n"
168 "Cache-Control: no-cache\r\n"
169 "Connection: close\r\n"
170 "Content-Type: text/html\r\n"
171 "\r\n"
172 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
173
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]174 [HTTP_ERR_405] =
175 "HTTP/1.0 405 Method Not Allowed\r\n"
176 "Cache-Control: no-cache\r\n"
177 "Connection: close\r\n"
178 "Content-Type: text/html\r\n"
179 "\r\n"
180 "<html><body><h1>405 Method Not Allowed</h1>\nA request was made of a resource using a request method not supported by that resource\n</body></html>\n",
181
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]182 [HTTP_ERR_408] =
183 "HTTP/1.0 408 Request Time-out\r\n"
184 "Cache-Control: no-cache\r\n"
185 "Connection: close\r\n"
186 "Content-Type: text/html\r\n"
187 "\r\n"
188 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
189
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]190 [HTTP_ERR_429] =
191 "HTTP/1.0 429 Too Many Requests\r\n"
192 "Cache-Control: no-cache\r\n"
193 "Connection: close\r\n"
194 "Content-Type: text/html\r\n"
195 "\r\n"
196 "<html><body><h1>429 Too Many Requests</h1>\nYou have sent too many requests in a given amount of time.\n</body></html>\n",
197
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]198 [HTTP_ERR_500] =
Jarno Huuskonen16ad94a2017-01-09 14:17:10 +0200[diff] [blame]199 "HTTP/1.0 500 Internal Server Error\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]200 "Cache-Control: no-cache\r\n"
201 "Connection: close\r\n"
202 "Content-Type: text/html\r\n"
203 "\r\n"
Jarno Huuskonen16ad94a2017-01-09 14:17:10 +0200[diff] [blame]204 "<html><body><h1>500 Internal Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]205
206 [HTTP_ERR_502] =
207 "HTTP/1.0 502 Bad Gateway\r\n"
208 "Cache-Control: no-cache\r\n"
209 "Connection: close\r\n"
210 "Content-Type: text/html\r\n"
211 "\r\n"
212 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
213
214 [HTTP_ERR_503] =
215 "HTTP/1.0 503 Service Unavailable\r\n"
216 "Cache-Control: no-cache\r\n"
217 "Connection: close\r\n"
218 "Content-Type: text/html\r\n"
219 "\r\n"
220 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
221
222 [HTTP_ERR_504] =
223 "HTTP/1.0 504 Gateway Time-out\r\n"
224 "Cache-Control: no-cache\r\n"
225 "Connection: close\r\n"
226 "Content-Type: text/html\r\n"
227 "\r\n"
228 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
229
230};
231
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]232/* status codes available for the stats admin page (strictly 4 chars length) */
233const char *stat_status_codes[STAT_STATUS_SIZE] = {
234 [STAT_STATUS_DENY] = "DENY",
235 [STAT_STATUS_DONE] = "DONE",
236 [STAT_STATUS_ERRP] = "ERRP",
237 [STAT_STATUS_EXCD] = "EXCD",
238 [STAT_STATUS_NONE] = "NONE",
239 [STAT_STATUS_PART] = "PART",
240 [STAT_STATUS_UNKN] = "UNKN",
241};
242
243
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]244/* List head of all known action keywords for "http-request" */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]245struct action_kw_list http_req_keywords = {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]246 .list = LIST_HEAD_INIT(http_req_keywords.list)
247};
248
249/* List head of all known action keywords for "http-response" */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]250struct action_kw_list http_res_keywords = {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]251 .list = LIST_HEAD_INIT(http_res_keywords.list)
252};
253
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]254/* We must put the messages here since GCC cannot initialize consts depending
255 * on strlen().
256 */
257struct chunk http_err_chunks[HTTP_ERR_SIZE];
258
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]259/* this struct is used between calls to smp_fetch_hdr() or smp_fetch_cookie() */
260static struct hdr_ctx static_hdr_ctx;
261
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]262#define FD_SETS_ARE_BITFIELDS
263#ifdef FD_SETS_ARE_BITFIELDS
264/*
265 * This map is used with all the FD_* macros to check whether a particular bit
266 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
267 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
268 * byte should be encoded. Be careful to always pass bytes from 0 to 255
269 * exclusively to the macros.
270 */
271fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
272fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]273fd_set http_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]274
275#else
276#error "Check if your OS uses bitfields for fd_sets"
277#endif
278
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]279static int http_apply_redirect_rule(struct redirect_rule *rule, struct stream *s, struct http_txn *txn);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]280
David Carlier7365f7d2016-04-04 11:54:42 +0100[diff] [blame]281static inline int http_msg_forward_body(struct stream *s, struct http_msg *msg);
282static inline int http_msg_forward_chunked_body(struct stream *s, struct http_msg *msg);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]283
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]284/* This function returns a reason associated with the HTTP status.
285 * This function never fails, a message is always returned.
286 */
287const char *get_reason(unsigned int status)
288{
289 switch (status) {
290 case 100: return "Continue";
291 case 101: return "Switching Protocols";
292 case 102: return "Processing";
293 case 200: return "OK";
294 case 201: return "Created";
295 case 202: return "Accepted";
296 case 203: return "Non-Authoritative Information";
297 case 204: return "No Content";
298 case 205: return "Reset Content";
299 case 206: return "Partial Content";
300 case 207: return "Multi-Status";
301 case 210: return "Content Different";
302 case 226: return "IM Used";
303 case 300: return "Multiple Choices";
304 case 301: return "Moved Permanently";
305 case 302: return "Moved Temporarily";
306 case 303: return "See Other";
307 case 304: return "Not Modified";
308 case 305: return "Use Proxy";
309 case 307: return "Temporary Redirect";
310 case 308: return "Permanent Redirect";
311 case 310: return "Too many Redirects";
312 case 400: return "Bad Request";
313 case 401: return "Unauthorized";
314 case 402: return "Payment Required";
315 case 403: return "Forbidden";
316 case 404: return "Not Found";
317 case 405: return "Method Not Allowed";
318 case 406: return "Not Acceptable";
319 case 407: return "Proxy Authentication Required";
320 case 408: return "Request Time-out";
321 case 409: return "Conflict";
322 case 410: return "Gone";
323 case 411: return "Length Required";
324 case 412: return "Precondition Failed";
325 case 413: return "Request Entity Too Large";
326 case 414: return "Request-URI Too Long";
327 case 415: return "Unsupported Media Type";
328 case 416: return "Requested range unsatisfiable";
329 case 417: return "Expectation failed";
330 case 418: return "I'm a teapot";
331 case 422: return "Unprocessable entity";
332 case 423: return "Locked";
333 case 424: return "Method failure";
334 case 425: return "Unordered Collection";
335 case 426: return "Upgrade Required";
336 case 428: return "Precondition Required";
337 case 429: return "Too Many Requests";
338 case 431: return "Request Header Fields Too Large";
339 case 449: return "Retry With";
340 case 450: return "Blocked by Windows Parental Controls";
341 case 451: return "Unavailable For Legal Reasons";
342 case 456: return "Unrecoverable Error";
343 case 499: return "client has closed connection";
344 case 500: return "Internal Server Error";
345 case 501: return "Not Implemented";
Jarno Huuskonen59af2df2016-12-28 10:49:01 +0200[diff] [blame]346 case 502: return "Bad Gateway or Proxy Error";
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]347 case 503: return "Service Unavailable";
348 case 504: return "Gateway Time-out";
349 case 505: return "HTTP Version not supported";
350 case 506: return "Variant also negociate";
351 case 507: return "Insufficient storage";
352 case 508: return "Loop detected";
353 case 509: return "Bandwidth Limit Exceeded";
354 case 510: return "Not extended";
355 case 511: return "Network authentication required";
356 case 520: return "Web server is returning an unknown error";
357 default:
358 switch (status) {
359 case 100 ... 199: return "Informational";
360 case 200 ... 299: return "Success";
361 case 300 ... 399: return "Redirection";
362 case 400 ... 499: return "Client Error";
363 case 500 ... 599: return "Server Error";
364 default: return "Other";
365 }
366 }
367}
368
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]369/* This function returns HTTP_ERR_<num> (enum) matching http status code.
370 * Returned value should match codes from http_err_codes.
371 */
372static const int http_get_status_idx(unsigned int status)
373{
374 switch (status) {
375 case 200: return HTTP_ERR_200;
376 case 400: return HTTP_ERR_400;
377 case 403: return HTTP_ERR_403;
378 case 405: return HTTP_ERR_405;
379 case 408: return HTTP_ERR_408;
380 case 429: return HTTP_ERR_429;
381 case 500: return HTTP_ERR_500;
382 case 502: return HTTP_ERR_502;
383 case 503: return HTTP_ERR_503;
384 case 504: return HTTP_ERR_504;
385 default: return HTTP_ERR_500;
386 }
387}
388
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]389void init_proto_http()
390{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]391 int i;
392 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]393 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]394
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]395 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
396 if (!http_err_msgs[msg]) {
397 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
398 abort();
399 }
400
401 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
402 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
403 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]404
405 /* initialize the log header encoding map : '{|}"#' should be encoded with
406 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
407 * URL encoding only requires '"', '#' to be encoded as well as non-
408 * printable characters above.
409 */
410 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
411 memset(url_encode_map, 0, sizeof(url_encode_map));
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]412 memset(http_encode_map, 0, sizeof(url_encode_map));
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]413 for (i = 0; i < 32; i++) {
414 FD_SET(i, hdr_encode_map);
415 FD_SET(i, url_encode_map);
416 }
417 for (i = 127; i < 256; i++) {
418 FD_SET(i, hdr_encode_map);
419 FD_SET(i, url_encode_map);
420 }
421
422 tmp = "\"#{|}";
423 while (*tmp) {
424 FD_SET(*tmp, hdr_encode_map);
425 tmp++;
426 }
427
428 tmp = "\"#";
429 while (*tmp) {
430 FD_SET(*tmp, url_encode_map);
431 tmp++;
432 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]433
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]434 /* initialize the http header encoding map. The draft httpbis define the
435 * header content as:
436 *
437 * HTTP-message = start-line
438 * *( header-field CRLF )
439 * CRLF
440 * [ message-body ]
441 * header-field = field-name ":" OWS field-value OWS
442 * field-value = *( field-content / obs-fold )
443 * field-content = field-vchar [ 1*( SP / HTAB ) field-vchar ]
444 * obs-fold = CRLF 1*( SP / HTAB )
445 * field-vchar = VCHAR / obs-text
446 * VCHAR = %x21-7E
447 * obs-text = %x80-FF
448 *
449 * All the chars are encoded except "VCHAR", "obs-text", SP and HTAB.
450 * The encoded chars are form 0x00 to 0x08, 0x0a to 0x1f and 0x7f. The
451 * "obs-fold" is volontary forgotten because haproxy remove this.
452 */
453 memset(http_encode_map, 0, sizeof(http_encode_map));
454 for (i = 0x00; i <= 0x08; i++)
455 FD_SET(i, http_encode_map);
456 for (i = 0x0a; i <= 0x1f; i++)
457 FD_SET(i, http_encode_map);
458 FD_SET(0x7f, http_encode_map);
459
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]460 /* memory allocations */
Willy Tarreau63986c72015-04-03 22:55:33 +0200[diff] [blame]461 pool2_http_txn = create_pool("http_txn", sizeof(struct http_txn), MEM_F_SHARED);
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]462 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]463 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]464}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]465
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]466/*
467 * We have 26 list of methods (1 per first letter), each of which can have
468 * up to 3 entries (2 valid, 1 null).
469 */
470struct http_method_desc {
Willy Tarreauc8987b32013-12-06 23:43:17 +0100[diff] [blame]471 enum http_meth_t meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]472 int len;
473 const char text[8];
474};
475
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]476const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]477 ['C' - 'A'] = {
478 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
479 },
480 ['D' - 'A'] = {
481 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
482 },
483 ['G' - 'A'] = {
484 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
485 },
486 ['H' - 'A'] = {
487 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
488 },
Christopher Fauletd57ad642015-07-31 14:26:57 +0200[diff] [blame]489 ['O' - 'A'] = {
490 [0] = { .meth = HTTP_METH_OPTIONS , .len=7, .text="OPTIONS" },
491 },
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]492 ['P' - 'A'] = {
493 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
494 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
495 },
496 ['T' - 'A'] = {
497 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
498 },
499 /* rest is empty like this :
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]500 * [0] = { .meth = HTTP_METH_OTHER , .len=0, .text="" },
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]501 */
502};
503
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]504const struct http_method_name http_known_methods[HTTP_METH_OTHER] = {
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]505 [HTTP_METH_OPTIONS] = { "OPTIONS", 7 },
506 [HTTP_METH_GET] = { "GET", 3 },
507 [HTTP_METH_HEAD] = { "HEAD", 4 },
508 [HTTP_METH_POST] = { "POST", 4 },
509 [HTTP_METH_PUT] = { "PUT", 3 },
510 [HTTP_METH_DELETE] = { "DELETE", 6 },
511 [HTTP_METH_TRACE] = { "TRACE", 5 },
512 [HTTP_METH_CONNECT] = { "CONNECT", 7 },
513};
514
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]515/* It is about twice as fast on recent architectures to lookup a byte in a
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]516 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]517 * RFC2616/RFC5234/RFC7230 for those chars. A token is any ASCII char that is
518 * neither a separator nor a CTL char. An http ver_token is any ASCII which can
519 * be found in an HTTP version, which includes 'H', 'T', 'P', '/', '.' and any
520 * digit. Note: please do not overwrite values in assignment since gcc-2.95
521 * will not handle them correctly. It's worth noting that chars 128..255 are
522 * nothing, not even control chars.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]523 */
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]524const unsigned char http_char_classes[256] = {
525 [ 0] = HTTP_FLG_CTL,
526 [ 1] = HTTP_FLG_CTL,
527 [ 2] = HTTP_FLG_CTL,
528 [ 3] = HTTP_FLG_CTL,
529 [ 4] = HTTP_FLG_CTL,
530 [ 5] = HTTP_FLG_CTL,
531 [ 6] = HTTP_FLG_CTL,
532 [ 7] = HTTP_FLG_CTL,
533 [ 8] = HTTP_FLG_CTL,
534 [ 9] = HTTP_FLG_SPHT | HTTP_FLG_LWS | HTTP_FLG_SEP | HTTP_FLG_CTL,
535 [ 10] = HTTP_FLG_CRLF | HTTP_FLG_LWS | HTTP_FLG_CTL,
536 [ 11] = HTTP_FLG_CTL,
537 [ 12] = HTTP_FLG_CTL,
538 [ 13] = HTTP_FLG_CRLF | HTTP_FLG_LWS | HTTP_FLG_CTL,
539 [ 14] = HTTP_FLG_CTL,
540 [ 15] = HTTP_FLG_CTL,
541 [ 16] = HTTP_FLG_CTL,
542 [ 17] = HTTP_FLG_CTL,
543 [ 18] = HTTP_FLG_CTL,
544 [ 19] = HTTP_FLG_CTL,
545 [ 20] = HTTP_FLG_CTL,
546 [ 21] = HTTP_FLG_CTL,
547 [ 22] = HTTP_FLG_CTL,
548 [ 23] = HTTP_FLG_CTL,
549 [ 24] = HTTP_FLG_CTL,
550 [ 25] = HTTP_FLG_CTL,
551 [ 26] = HTTP_FLG_CTL,
552 [ 27] = HTTP_FLG_CTL,
553 [ 28] = HTTP_FLG_CTL,
554 [ 29] = HTTP_FLG_CTL,
555 [ 30] = HTTP_FLG_CTL,
556 [ 31] = HTTP_FLG_CTL,
557 [' '] = HTTP_FLG_SPHT | HTTP_FLG_LWS | HTTP_FLG_SEP,
558 ['!'] = HTTP_FLG_TOK,
559 ['"'] = HTTP_FLG_SEP,
560 ['#'] = HTTP_FLG_TOK,
561 ['$'] = HTTP_FLG_TOK,
562 ['%'] = HTTP_FLG_TOK,
563 ['&'] = HTTP_FLG_TOK,
564 [ 39] = HTTP_FLG_TOK,
565 ['('] = HTTP_FLG_SEP,
566 [')'] = HTTP_FLG_SEP,
567 ['*'] = HTTP_FLG_TOK,
568 ['+'] = HTTP_FLG_TOK,
569 [','] = HTTP_FLG_SEP,
570 ['-'] = HTTP_FLG_TOK,
571 ['.'] = HTTP_FLG_TOK | HTTP_FLG_VER,
572 ['/'] = HTTP_FLG_SEP | HTTP_FLG_VER,
573 ['0'] = HTTP_FLG_TOK | HTTP_FLG_VER,
574 ['1'] = HTTP_FLG_TOK | HTTP_FLG_VER,
575 ['2'] = HTTP_FLG_TOK | HTTP_FLG_VER,
576 ['3'] = HTTP_FLG_TOK | HTTP_FLG_VER,
577 ['4'] = HTTP_FLG_TOK | HTTP_FLG_VER,
578 ['5'] = HTTP_FLG_TOK | HTTP_FLG_VER,
579 ['6'] = HTTP_FLG_TOK | HTTP_FLG_VER,
580 ['7'] = HTTP_FLG_TOK | HTTP_FLG_VER,
581 ['8'] = HTTP_FLG_TOK | HTTP_FLG_VER,
582 ['9'] = HTTP_FLG_TOK | HTTP_FLG_VER,
583 [':'] = HTTP_FLG_SEP,
584 [';'] = HTTP_FLG_SEP,
585 ['<'] = HTTP_FLG_SEP,
586 ['='] = HTTP_FLG_SEP,
587 ['>'] = HTTP_FLG_SEP,
588 ['?'] = HTTP_FLG_SEP,
589 ['@'] = HTTP_FLG_SEP,
590 ['A'] = HTTP_FLG_TOK,
591 ['B'] = HTTP_FLG_TOK,
592 ['C'] = HTTP_FLG_TOK,
593 ['D'] = HTTP_FLG_TOK,
594 ['E'] = HTTP_FLG_TOK,
595 ['F'] = HTTP_FLG_TOK,
596 ['G'] = HTTP_FLG_TOK,
597 ['H'] = HTTP_FLG_TOK | HTTP_FLG_VER,
598 ['I'] = HTTP_FLG_TOK,
599 ['J'] = HTTP_FLG_TOK,
600 ['K'] = HTTP_FLG_TOK,
601 ['L'] = HTTP_FLG_TOK,
602 ['M'] = HTTP_FLG_TOK,
603 ['N'] = HTTP_FLG_TOK,
604 ['O'] = HTTP_FLG_TOK,
605 ['P'] = HTTP_FLG_TOK | HTTP_FLG_VER,
606 ['Q'] = HTTP_FLG_TOK,
607 ['R'] = HTTP_FLG_TOK | HTTP_FLG_VER,
608 ['S'] = HTTP_FLG_TOK | HTTP_FLG_VER,
609 ['T'] = HTTP_FLG_TOK | HTTP_FLG_VER,
610 ['U'] = HTTP_FLG_TOK,
611 ['V'] = HTTP_FLG_TOK,
612 ['W'] = HTTP_FLG_TOK,
613 ['X'] = HTTP_FLG_TOK,
614 ['Y'] = HTTP_FLG_TOK,
615 ['Z'] = HTTP_FLG_TOK,
616 ['['] = HTTP_FLG_SEP,
617 [ 92] = HTTP_FLG_SEP,
618 [']'] = HTTP_FLG_SEP,
619 ['^'] = HTTP_FLG_TOK,
620 ['_'] = HTTP_FLG_TOK,
621 ['`'] = HTTP_FLG_TOK,
622 ['a'] = HTTP_FLG_TOK,
623 ['b'] = HTTP_FLG_TOK,
624 ['c'] = HTTP_FLG_TOK,
625 ['d'] = HTTP_FLG_TOK,
626 ['e'] = HTTP_FLG_TOK,
627 ['f'] = HTTP_FLG_TOK,
628 ['g'] = HTTP_FLG_TOK,
629 ['h'] = HTTP_FLG_TOK,
630 ['i'] = HTTP_FLG_TOK,
631 ['j'] = HTTP_FLG_TOK,
632 ['k'] = HTTP_FLG_TOK,
633 ['l'] = HTTP_FLG_TOK,
634 ['m'] = HTTP_FLG_TOK,
635 ['n'] = HTTP_FLG_TOK,
636 ['o'] = HTTP_FLG_TOK,
637 ['p'] = HTTP_FLG_TOK,
638 ['q'] = HTTP_FLG_TOK,
639 ['r'] = HTTP_FLG_TOK,
640 ['s'] = HTTP_FLG_TOK,
641 ['t'] = HTTP_FLG_TOK,
642 ['u'] = HTTP_FLG_TOK,
643 ['v'] = HTTP_FLG_TOK,
644 ['w'] = HTTP_FLG_TOK,
645 ['x'] = HTTP_FLG_TOK,
646 ['y'] = HTTP_FLG_TOK,
647 ['z'] = HTTP_FLG_TOK,
648 ['{'] = HTTP_FLG_SEP,
649 ['|'] = HTTP_FLG_TOK,
650 ['}'] = HTTP_FLG_SEP,
651 ['~'] = HTTP_FLG_TOK,
652 [127] = HTTP_FLG_CTL,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]653};
654
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]655/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]656 * Adds a header and its CRLF at the tail of the message's buffer, just before
657 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]658 * The header is also automatically added to the index <hdr_idx>, and the end
659 * of headers is automatically adjusted. The number of bytes added is returned
660 * on success, otherwise <0 is returned indicating an error.
661 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]662int http_header_add_tail(struct http_msg *msg, struct hdr_idx *hdr_idx, const char *text)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]663{
664 int bytes, len;
665
666 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]667 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]668 if (!bytes)
669 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]670 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]671 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
672}
673
674/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]675 * Adds a header and its CRLF at the tail of the message's buffer, just before
676 * the last CRLF. <len> bytes are copied, not counting the CRLF. If <text> is NULL, then
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]677 * the buffer is only opened and the space reserved, but nothing is copied.
678 * The header is also automatically added to the index <hdr_idx>, and the end
679 * of headers is automatically adjusted. The number of bytes added is returned
680 * on success, otherwise <0 is returned indicating an error.
681 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]682int http_header_add_tail2(struct http_msg *msg,
683 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]684{
685 int bytes;
686
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]687 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]688 if (!bytes)
689 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]690 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]691 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
692}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]693
694/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]695 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
696 * If so, returns the position of the first non-space character relative to
697 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
698 * to return a pointer to the place after the first space. Returns 0 if the
699 * header name does not match. Checks are case-insensitive.
700 */
701int http_header_match2(const char *hdr, const char *end,
702 const char *name, int len)
703{
704 const char *val;
705
706 if (hdr + len >= end)
707 return 0;
708 if (hdr[len] != ':')
709 return 0;
710 if (strncasecmp(hdr, name, len) != 0)
711 return 0;
712 val = hdr + len + 1;
713 while (val < end && HTTP_IS_SPHT(*val))
714 val++;
715 if ((val >= end) && (len + 2 <= end - hdr))
716 return len + 2; /* we may replace starting from second space */
717 return val - hdr;
718}
719
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]720/* Find the first or next occurrence of header <name> in message buffer <sol>
721 * using headers index <idx>, and return it in the <ctx> structure. This
722 * structure holds everything necessary to use the header and find next
723 * occurrence. If its <idx> member is 0, the header is searched from the
724 * beginning. Otherwise, the next occurrence is returned. The function returns
725 * 1 when it finds a value, and 0 when there is no more. It is very similar to
726 * http_find_header2() except that it is designed to work with full-line headers
727 * whose comma is not a delimiter but is part of the syntax. As a special case,
728 * if ctx->val is NULL when searching for a new values of a header, the current
729 * header is rescanned. This allows rescanning after a header deletion.
730 */
731int http_find_full_header2(const char *name, int len,
732 char *sol, struct hdr_idx *idx,
733 struct hdr_ctx *ctx)
734{
735 char *eol, *sov;
736 int cur_idx, old_idx;
737
738 cur_idx = ctx->idx;
739 if (cur_idx) {
740 /* We have previously returned a header, let's search another one */
741 sol = ctx->line;
742 eol = sol + idx->v[cur_idx].len;
743 goto next_hdr;
744 }
745
746 /* first request for this header */
747 sol += hdr_idx_first_pos(idx);
748 old_idx = 0;
749 cur_idx = hdr_idx_first_idx(idx);
750 while (cur_idx) {
751 eol = sol + idx->v[cur_idx].len;
752
753 if (len == 0) {
754 /* No argument was passed, we want any header.
755 * To achieve this, we simply build a fake request. */
756 while (sol + len < eol && sol[len] != ':')
757 len++;
758 name = sol;
759 }
760
761 if ((len < eol - sol) &&
762 (sol[len] == ':') &&
763 (strncasecmp(sol, name, len) == 0)) {
764 ctx->del = len;
765 sov = sol + len + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]766 while (sov < eol && HTTP_IS_LWS(*sov))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]767 sov++;
768
769 ctx->line = sol;
770 ctx->prev = old_idx;
771 ctx->idx = cur_idx;
772 ctx->val = sov - sol;
773 ctx->tws = 0;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]774 while (eol > sov && HTTP_IS_LWS(*(eol - 1))) {
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]775 eol--;
776 ctx->tws++;
777 }
778 ctx->vlen = eol - sov;
779 return 1;
780 }
781 next_hdr:
782 sol = eol + idx->v[cur_idx].cr + 1;
783 old_idx = cur_idx;
784 cur_idx = idx->v[cur_idx].next;
785 }
786 return 0;
787}
788
Willy Tarreauc90dc232015-02-20 13:51:36 +0100[diff] [blame]789/* Find the first or next header field in message buffer <sol> using headers
790 * index <idx>, and return it in the <ctx> structure. This structure holds
791 * everything necessary to use the header and find next occurrence. If its
792 * <idx> member is 0, the first header is retrieved. Otherwise, the next
793 * occurrence is returned. The function returns 1 when it finds a value, and
794 * 0 when there is no more. It is equivalent to http_find_full_header2() with
795 * no header name.
796 */
797int http_find_next_header(char *sol, struct hdr_idx *idx, struct hdr_ctx *ctx)
798{
799 char *eol, *sov;
800 int cur_idx, old_idx;
801 int len;
802
803 cur_idx = ctx->idx;
804 if (cur_idx) {
805 /* We have previously returned a header, let's search another one */
806 sol = ctx->line;
807 eol = sol + idx->v[cur_idx].len;
808 goto next_hdr;
809 }
810
811 /* first request for this header */
812 sol += hdr_idx_first_pos(idx);
813 old_idx = 0;
814 cur_idx = hdr_idx_first_idx(idx);
815 while (cur_idx) {
816 eol = sol + idx->v[cur_idx].len;
817
818 len = 0;
819 while (1) {
820 if (len >= eol - sol)
821 goto next_hdr;
822 if (sol[len] == ':')
823 break;
824 len++;
825 }
826
827 ctx->del = len;
828 sov = sol + len + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]829 while (sov < eol && HTTP_IS_LWS(*sov))
Willy Tarreauc90dc232015-02-20 13:51:36 +0100[diff] [blame]830 sov++;
831
832 ctx->line = sol;
833 ctx->prev = old_idx;
834 ctx->idx = cur_idx;
835 ctx->val = sov - sol;
836 ctx->tws = 0;
837
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]838 while (eol > sov && HTTP_IS_LWS(*(eol - 1))) {
Willy Tarreauc90dc232015-02-20 13:51:36 +0100[diff] [blame]839 eol--;
840 ctx->tws++;
841 }
842 ctx->vlen = eol - sov;
843 return 1;
844
845 next_hdr:
846 sol = eol + idx->v[cur_idx].cr + 1;
847 old_idx = cur_idx;
848 cur_idx = idx->v[cur_idx].next;
849 }
850 return 0;
851}
852
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]853/* Find the end of the header value contained between <s> and <e>. See RFC2616,
854 * par 2.2 for more information. Note that it requires a valid header to return
855 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]856 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]857char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]858{
859 int quoted, qdpair;
860
861 quoted = qdpair = 0;
Willy Tarreaue6d9c212016-11-05 18:23:38 +0100[diff] [blame]862
863#if defined(__x86_64__) || \
864 defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) || \
865 defined(__ARM_ARCH_7A__)
866 /* speedup: skip everything not a comma nor a double quote */
867 for (; s <= e - sizeof(int); s += sizeof(int)) {
868 unsigned int c = *(int *)s; // comma
869 unsigned int q = c; // quote
870
871 c ^= 0x2c2c2c2c; // contains one zero on a comma
872 q ^= 0x22222222; // contains one zero on a quote
873
874 c = (c - 0x01010101) & ~c; // contains 0x80 below a comma
875 q = (q - 0x01010101) & ~q; // contains 0x80 below a quote
876
877 if ((c | q) & 0x80808080)
878 break; // found a comma or a quote
879 }
880#endif
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]881 for (; s < e; s++) {
882 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]883 else if (quoted) {
884 if (*s == '\\') qdpair = 1;
885 else if (*s == '"') quoted = 0;
886 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]887 else if (*s == '"') quoted = 1;
888 else if (*s == ',') return s;
889 }
890 return s;
891}
892
893/* Find the first or next occurrence of header <name> in message buffer <sol>
894 * using headers index <idx>, and return it in the <ctx> structure. This
895 * structure holds everything necessary to use the header and find next
896 * occurrence. If its <idx> member is 0, the header is searched from the
897 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]898 * 1 when it finds a value, and 0 when there is no more. It is designed to work
899 * with headers defined as comma-separated lists. As a special case, if ctx->val
900 * is NULL when searching for a new values of a header, the current header is
901 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]902 */
903int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]904 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]905 struct hdr_ctx *ctx)
906{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]907 char *eol, *sov;
908 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]909
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]910 cur_idx = ctx->idx;
911 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]912 /* We have previously returned a value, let's search
913 * another one on the same line.
914 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]915 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]916 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]917 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]918 eol = sol + idx->v[cur_idx].len;
919
920 if (sov >= eol)
921 /* no more values in this header */
922 goto next_hdr;
923
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]924 /* values remaining for this header, skip the comma but save it
925 * for later use (eg: for header deletion).
926 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]927 sov++;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]928 while (sov < eol && HTTP_IS_LWS((*sov)))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]929 sov++;
930
931 goto return_hdr;
932 }
933
934 /* first request for this header */
935 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]936 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]937 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]938 while (cur_idx) {
939 eol = sol + idx->v[cur_idx].len;
940
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]941 if (len == 0) {
942 /* No argument was passed, we want any header.
943 * To achieve this, we simply build a fake request. */
944 while (sol + len < eol && sol[len] != ':')
945 len++;
946 name = sol;
947 }
948
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]949 if ((len < eol - sol) &&
950 (sol[len] == ':') &&
951 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]952 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]953 sov = sol + len + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]954 while (sov < eol && HTTP_IS_LWS(*sov))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]955 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]956
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]957 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]958 ctx->prev = old_idx;
959 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]960 ctx->idx = cur_idx;
961 ctx->val = sov - sol;
962
963 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]964 ctx->tws = 0;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]965 while (eol > sov && HTTP_IS_LWS(*(eol - 1))) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]966 eol--;
967 ctx->tws++;
968 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]969 ctx->vlen = eol - sov;
970 return 1;
971 }
972 next_hdr:
973 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]974 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]975 cur_idx = idx->v[cur_idx].next;
976 }
977 return 0;
978}
979
980int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]981 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]982 struct hdr_ctx *ctx)
983{
984 return http_find_header2(name, strlen(name), sol, idx, ctx);
985}
986
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]987/* Remove one value of a header. This only works on a <ctx> returned by one of
988 * the http_find_header functions. The value is removed, as well as surrounding
989 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]990 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]991 * message <msg>. The new index is returned. If it is zero, it means there is
992 * no more header, so any processing may stop. The ctx is always left in a form
993 * that can be handled by http_find_header2() to find next occurrence.
994 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]995int http_remove_header2(struct http_msg *msg, struct hdr_idx *idx, struct hdr_ctx *ctx)
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]996{
997 int cur_idx = ctx->idx;
998 char *sol = ctx->line;
999 struct hdr_idx_elem *hdr;
1000 int delta, skip_comma;
1001
1002 if (!cur_idx)
1003 return 0;
1004
1005 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]1006 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]1007 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1008 delta = buffer_replace2(msg->chn->buf, sol, sol + hdr->len + hdr->cr + 1, NULL, 0);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]1009 http_msg_move_end(msg, delta);
1010 idx->used--;
1011 hdr->len = 0; /* unused entry */
1012 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]1013 if (idx->tail == ctx->idx)
1014 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]1015 ctx->idx = ctx->prev; /* walk back to the end of previous header */
Willy Tarreau7c1c2172015-01-07 17:23:50 +0100[diff] [blame]1016 ctx->line -= idx->v[ctx->idx].len + idx->v[ctx->idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]1017 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]1018 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]1019 return ctx->idx;
1020 }
1021
1022 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]1023 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
1024 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]1025 */
1026
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]1027 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1028 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]1029 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]1030 NULL, 0);
1031 hdr->len += delta;
1032 http_msg_move_end(msg, delta);
1033 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]1034 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]1035 return ctx->idx;
1036}
1037
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1038/* This function handles a server error at the stream interface level. The
1039 * stream interface is assumed to be already in a closed state. An optional
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1040 * message is copied into the input buffer.
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1041 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]1042 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1043 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1044static void http_server_error(struct stream *s, struct stream_interface *si,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1045 int err, int finst, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1046{
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1047 FLT_STRM_CB(s, flt_http_reply(s, s->txn->status, msg));
Willy Tarreau2bb4a962014-11-28 11:11:05 +0100[diff] [blame]1048 channel_auto_read(si_oc(si));
1049 channel_abort(si_oc(si));
1050 channel_auto_close(si_oc(si));
1051 channel_erase(si_oc(si));
1052 channel_auto_close(si_ic(si));
1053 channel_auto_read(si_ic(si));
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1054 if (msg)
Willy Tarreau2bb4a962014-11-28 11:11:05 +0100[diff] [blame]1055 bo_inject(si_ic(si), msg->str, msg->len);
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1056 if (!(s->flags & SF_ERR_MASK))
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]1057 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1058 if (!(s->flags & SF_FINST_MASK))
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]1059 s->flags |= finst;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1060}
1061
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1062/* This function returns the appropriate error location for the given stream
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1063 * and message.
1064 */
1065
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1066struct chunk *http_error_message(struct stream *s)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1067{
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1068 const int msgnum = http_get_status_idx(s->txn->status);
1069
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]1070 if (s->be->errmsg[msgnum].str)
1071 return &s->be->errmsg[msgnum];
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]1072 else if (strm_fe(s)->errmsg[msgnum].str)
1073 return &strm_fe(s)->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]1074 else
1075 return &http_err_chunks[msgnum];
1076}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1077
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]1078void
1079http_reply_and_close(struct stream *s, short status, struct chunk *msg)
1080{
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]1081 s->txn->flags &= ~TX_WAIT_NEXT_RQ;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]1082 FLT_STRM_CB(s, flt_http_reply(s, status, msg));
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]1083 stream_int_retnclose(&s->si[0], msg);
1084}
1085
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1086/*
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]1087 * returns a known method among HTTP_METH_* or HTTP_METH_OTHER for all unknown
1088 * ones.
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1089 */
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]1090enum http_meth_t find_http_meth(const char *str, const int len)
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1091{
1092 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1093 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1094
1095 m = ((unsigned)*str - 'A');
1096
1097 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1098 for (h = http_methods[m]; h->len > 0; h++) {
1099 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1100 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1101 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1102 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1103 };
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1104 }
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]1105 return HTTP_METH_OTHER;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1106}
1107
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1108/* Parse the URI from the given transaction (which is assumed to be in request
1109 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
1110 * It is returned otherwise.
1111 */
Thierry FOURNIER3c331782015-09-17 19:33:35 +0200[diff] [blame]1112char *http_get_path(struct http_txn *txn)
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1113{
1114 char *ptr, *end;
1115
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1116 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1117 end = ptr + txn->req.sl.rq.u_l;
1118
1119 if (ptr >= end)
1120 return NULL;
1121
1122 /* RFC2616, par. 5.1.2 :
1123 * Request-URI = "*" | absuri | abspath | authority
1124 */
1125
1126 if (*ptr == '*')
1127 return NULL;
1128
1129 if (isalpha((unsigned char)*ptr)) {
1130 /* this is a scheme as described by RFC3986, par. 3.1 */
1131 ptr++;
1132 while (ptr < end &&
1133 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
1134 ptr++;
1135 /* skip '://' */
1136 if (ptr == end || *ptr++ != ':')
1137 return NULL;
1138 if (ptr == end || *ptr++ != '/')
1139 return NULL;
1140 if (ptr == end || *ptr++ != '/')
1141 return NULL;
1142 }
1143 /* skip [user[:passwd]@]host[:[port]] */
1144
1145 while (ptr < end && *ptr != '/')
1146 ptr++;
1147
1148 if (ptr == end)
1149 return NULL;
1150
1151 /* OK, we got the '/' ! */
1152 return ptr;
1153}
1154
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]1155/* Parse the URI from the given string and look for the "/" beginning the PATH.
1156 * If not found, return NULL. It is returned otherwise.
1157 */
1158static char *
1159http_get_path_from_string(char *str)
1160{
1161 char *ptr = str;
1162
1163 /* RFC2616, par. 5.1.2 :
1164 * Request-URI = "*" | absuri | abspath | authority
1165 */
1166
1167 if (*ptr == '*')
1168 return NULL;
1169
1170 if (isalpha((unsigned char)*ptr)) {
1171 /* this is a scheme as described by RFC3986, par. 3.1 */
1172 ptr++;
1173 while (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.')
1174 ptr++;
1175 /* skip '://' */
1176 if (*ptr == '\0' || *ptr++ != ':')
1177 return NULL;
1178 if (*ptr == '\0' || *ptr++ != '/')
1179 return NULL;
1180 if (*ptr == '\0' || *ptr++ != '/')
1181 return NULL;
1182 }
1183 /* skip [user[:passwd]@]host[:[port]] */
1184
1185 while (*ptr != '\0' && *ptr != ' ' && *ptr != '/')
1186 ptr++;
1187
1188 if (*ptr == '\0' || *ptr == ' ')
1189 return NULL;
1190
1191 /* OK, we got the '/' ! */
1192 return ptr;
1193}
1194
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]1195/* Returns a 302 for a redirectable request that reaches a server working in
1196 * in redirect mode. This may only be called just after the stream interface
1197 * has moved to SI_ST_ASS. Unprocessable requests are left unchanged and will
1198 * follow normal proxy processing. NOTE: this function is designed to support
1199 * being called once data are scheduled for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1200 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1201void http_perform_server_redirect(struct stream *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1202{
1203 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1204 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1205 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1206 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1207
1208 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1209 trash.len = strlen(HTTP_302);
1210 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1211
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]1212 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1213
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1214 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1215 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1216 return;
1217
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]1218 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1219 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1220 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
1221 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]1222 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1223
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1224 /* 3: add the request URI. Since it was already forwarded, we need
1225 * to temporarily rewind the buffer.
1226 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1227 txn = s->txn;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1228 b_rew(s->req.buf, rewind = http_hdr_rewind(&txn->req));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1229
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1230 path = http_get_path(txn);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1231 len = buffer_count(s->req.buf, path, b_ptr(s->req.buf, txn->req.sl.rq.u + txn->req.sl.rq.u_l));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1232
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1233 b_adv(s->req.buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1234
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1235 if (!path)
1236 return;
1237
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1238 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1239 return;
1240
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1241 memcpy(trash.str + trash.len, path, len);
1242 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1243
1244 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1245 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
1246 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1247 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1248 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
1249 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1250 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1251
1252 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]1253 si_shutr(si);
1254 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1255 si->err_type = SI_ET_NONE;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1256 si->state = SI_ST_CLO;
1257
1258 /* send the message */
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1259 txn->status = 302;
1260 http_server_error(s, si, SF_ERR_LOCAL, SF_FINST_C, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1261
1262 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau4521ba62013-01-24 01:25:25 +0100[diff] [blame]1263 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500[diff] [blame]1264 srv_set_sess_last(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1265}
1266
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]1267/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1268 * that the server side is closed. Note that err_type is actually a
1269 * bitmask, where almost only aborts may be cumulated with other
1270 * values. We consider that aborted operations are more important
1271 * than timeouts or errors due to the fact that nobody else in the
1272 * logs might explain incomplete retries. All others should avoid
1273 * being cumulated. It should normally not be possible to have multiple
1274 * aborts at once, but just in case, the first one in sequence is reported.
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1275 * Note that connection errors appearing on the second request of a keep-alive
1276 * connection are not reported since this allows the client to retry.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1277 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1278void http_return_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1279{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]1280 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1281
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1282 /* set s->txn->status for http_error_message(s) */
1283 s->txn->status = 503;
1284
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1285 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1286 http_server_error(s, si, SF_ERR_CLICL, SF_FINST_Q,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1287 http_error_message(s));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1288 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1289 http_server_error(s, si, SF_ERR_CLICL, SF_FINST_C,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1290 (s->txn->flags & TX_NOT_FIRST) ? NULL :
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1291 http_error_message(s));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1292 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1293 http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_Q,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1294 http_error_message(s));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1295 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1296 http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_Q,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1297 http_error_message(s));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1298 else if (err_type & SI_ET_CONN_TO)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1299 http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_C,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1300 (s->txn->flags & TX_NOT_FIRST) ? NULL :
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1301 http_error_message(s));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1302 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1303 http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_C,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1304 (s->flags & SF_SRV_REUSED) ? NULL :
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1305 http_error_message(s));
Willy Tarreau2d400bb2012-05-14 12:11:47 +0200[diff] [blame]1306 else if (err_type & SI_ET_CONN_RES)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1307 http_server_error(s, si, SF_ERR_RESOURCE, SF_FINST_C,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1308 (s->txn->flags & TX_NOT_FIRST) ? NULL :
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1309 http_error_message(s));
1310 else { /* SI_ET_CONN_OTHER and others */
1311 s->txn->status = 500;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1312 http_server_error(s, si, SF_ERR_INTERNAL, SF_FINST_C,
Willy Tarreau2019f952017-03-14 11:07:31 +0100[diff] [blame]1313 http_error_message(s));
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]1314 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1315}
1316
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1317extern const char sess_term_cond[8];
1318extern const char sess_fin_state[8];
1319extern const char *monthname[12];
Willy Tarreau63986c72015-04-03 22:55:33 +0200[diff] [blame]1320struct pool_head *pool2_http_txn;
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]1321struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]1322struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]1323struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1324
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1325/*
1326 * Capture headers from message starting at <som> according to header list
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1327 * <cap_hdr>, and fill the <cap> pointers appropriately.
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1328 */
1329void capture_headers(char *som, struct hdr_idx *idx,
1330 char **cap, struct cap_hdr *cap_hdr)
1331{
1332 char *eol, *sol, *col, *sov;
1333 int cur_idx;
1334 struct cap_hdr *h;
1335 int len;
1336
1337 sol = som + hdr_idx_first_pos(idx);
1338 cur_idx = hdr_idx_first_idx(idx);
1339
1340 while (cur_idx) {
1341 eol = sol + idx->v[cur_idx].len;
1342
1343 col = sol;
1344 while (col < eol && *col != ':')
1345 col++;
1346
1347 sov = col + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]1348 while (sov < eol && HTTP_IS_LWS(*sov))
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1349 sov++;
1350
1351 for (h = cap_hdr; h; h = h->next) {
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1352 if (h->namelen && (h->namelen == col - sol) &&
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1353 (strncasecmp(sol, h->name, h->namelen) == 0)) {
1354 if (cap[h->index] == NULL)
1355 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]1356 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1357
1358 if (cap[h->index] == NULL) {
1359 Alert("HTTP capture : out of memory.\n");
1360 continue;
1361 }
1362
1363 len = eol - sov;
1364 if (len > h->len)
1365 len = h->len;
1366
1367 memcpy(cap[h->index], sov, len);
1368 cap[h->index][len]=0;
1369 }
1370 }
1371 sol = eol + idx->v[cur_idx].cr + 1;
1372 cur_idx = idx->v[cur_idx].next;
1373 }
1374}
1375
1376
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1377/* either we find an LF at <ptr> or we jump to <bad>.
1378 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1379#define EXPECT_LF_HERE(ptr, bad, st) do { if (unlikely(*(ptr) != '\n')) { state = st; goto bad;}; } while (0)
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1380
1381/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
1382 * otherwise to <http_msg_ood> with <state> set to <st>.
1383 */
1384#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
1385 ptr++; \
1386 if (likely(ptr < end)) \
1387 goto good; \
1388 else { \
1389 state = (st); \
1390 goto http_msg_ood; \
1391 } \
1392 } while (0)
1393
1394
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1395/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1396 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1397 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
1398 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
1399 * will give undefined results.
1400 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1401 * and that msg->sol points to the beginning of the response.
1402 * If a complete line is found (which implies that at least one CR or LF is
1403 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1404 * returned indicating an incomplete line (which does not mean that parts have
1405 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1406 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1407 * upon next call.
1408 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1409 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1410 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1411 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1412 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1413 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1414const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1415 enum ht_state state, const char *ptr, const char *end,
1416 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1417{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1418 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1419
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1420 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1421 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1422 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1423 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1424 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
1425
1426 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1427 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1428 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1429 }
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1430 msg->err_state = HTTP_MSG_RPVER;
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1431 state = HTTP_MSG_ERROR;
1432 break;
1433
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1434 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1435 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1436 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1437 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1438 goto http_msg_rpcode;
1439 }
1440 if (likely(HTTP_IS_SPHT(*ptr)))
1441 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1442 /* so it's a CR/LF, this is invalid */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1443 msg->err_state = HTTP_MSG_RPVER_SP;
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1444 state = HTTP_MSG_ERROR;
1445 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1446
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1447 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1448 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1449 if (likely(!HTTP_IS_LWS(*ptr)))
1450 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
1451
1452 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1453 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1454 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1455 }
1456
1457 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1458 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1459 http_msg_rsp_reason:
1460 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1461 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1462 msg->sl.st.r_l = 0;
1463 goto http_msg_rpline_eol;
1464
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1465 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1466 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1467 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1468 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1469 goto http_msg_rpreason;
1470 }
1471 if (likely(HTTP_IS_SPHT(*ptr)))
1472 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1473 /* so it's a CR/LF, so there is no reason phrase */
1474 goto http_msg_rsp_reason;
1475
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1476 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1477 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1478 if (likely(!HTTP_IS_CRLF(*ptr)))
1479 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1480 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1481 http_msg_rpline_eol:
1482 /* We have seen the end of line. Note that we do not
1483 * necessarily have the \n yet, but at least we know that we
1484 * have EITHER \r OR \n, otherwise the response would not be
1485 * complete. We can then record the response length and return
1486 * to the caller which will be able to register it.
1487 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1488 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1489 return ptr;
1490
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1491 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1492#ifdef DEBUG_FULL
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1493 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1494 exit(1);
1495#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1496 ;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1497 }
1498
1499 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1500 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1501 if (ret_state)
1502 *ret_state = state;
1503 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1504 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1505 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1506}
1507
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1508/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1509 * This function parses a request line between <ptr> and <end>, starting with
1510 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1511 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1512 * will give undefined results.
1513 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1514 * and that msg->sol points to the beginning of the request.
1515 * If a complete line is found (which implies that at least one CR or LF is
1516 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1517 * returned indicating an incomplete line (which does not mean that parts have
1518 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1519 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1520 * upon next call.
1521 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1522 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1523 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1524 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1525 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1526 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1527const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1528 enum ht_state state, const char *ptr, const char *end,
1529 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1530{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1531 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1532
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1533 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1534 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1535 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1536 if (likely(HTTP_IS_TOKEN(*ptr)))
1537 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1538
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1539 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1540 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1541 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1542 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1543
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1544 if (likely(HTTP_IS_CRLF(*ptr))) {
1545 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1546 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1547 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1548 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1549 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1550 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1551 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1552 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1553 msg->sl.rq.v_l = 0;
1554 goto http_msg_rqline_eol;
1555 }
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1556 msg->err_state = HTTP_MSG_RQMETH;
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1557 state = HTTP_MSG_ERROR;
1558 break;
1559
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1560 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1561 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1562 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1563 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1564 goto http_msg_rquri;
1565 }
1566 if (likely(HTTP_IS_SPHT(*ptr)))
1567 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1568 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1569 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1570
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1571 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1572 http_msg_rquri:
Willy Tarreau5f10ea32016-11-05 17:52:06 +0100[diff] [blame]1573#if defined(__x86_64__) || \
1574 defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) || \
1575 defined(__ARM_ARCH_7A__)
1576 /* speedup: skip bytes not between 0x21 and 0x7e inclusive */
1577 while (ptr <= end - sizeof(int)) {
1578 int x = *(int *)ptr - 0x21212121;
1579 if (x & 0x80808080)
1580 break;
1581
1582 x -= 0x5e5e5e5e;
1583 if (!(x & 0x80808080))
1584 break;
1585
1586 ptr += sizeof(int);
1587 }
1588#endif
Willy Tarreau2afff9c2017-01-04 14:44:46 +0100[diff] [blame]1589 if (ptr >= end) {
1590 state = HTTP_MSG_RQURI;
1591 goto http_msg_ood;
1592 }
Willy Tarreau5f10ea32016-11-05 17:52:06 +0100[diff] [blame]1593 http_msg_rquri2:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1594 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau5f10ea32016-11-05 17:52:06 +0100[diff] [blame]1595 EAT_AND_JUMP_OR_RETURN(http_msg_rquri2, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1596
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1597 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1598 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1599 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1600 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1601
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1602 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1603 /* non-ASCII chars are forbidden unless option
1604 * accept-invalid-http-request is enabled in the frontend.
1605 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1606 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1607 if (msg->err_pos < -1)
1608 goto invalid_char;
1609 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1610 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1611 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1612 }
1613
1614 if (likely(HTTP_IS_CRLF(*ptr))) {
1615 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1616 goto http_msg_req09_uri_e;
1617 }
1618
1619 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1620 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1621 msg->err_pos = ptr - msg_start;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1622 msg->err_state = HTTP_MSG_RQURI;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1623 state = HTTP_MSG_ERROR;
1624 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1625
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1626 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1627 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1628 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1629 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1630 goto http_msg_rqver;
1631 }
1632 if (likely(HTTP_IS_SPHT(*ptr)))
1633 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1634 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1635 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1636
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1637 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1638 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1639 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1640 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1641
1642 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1643 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1644 http_msg_rqline_eol:
1645 /* We have seen the end of line. Note that we do not
1646 * necessarily have the \n yet, but at least we know that we
1647 * have EITHER \r OR \n, otherwise the request would not be
1648 * complete. We can then record the request length and return
1649 * to the caller which will be able to register it.
1650 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1651 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1652 return ptr;
1653 }
1654
1655 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1656 msg->err_state = HTTP_MSG_RQVER;
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1657 state = HTTP_MSG_ERROR;
1658 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1659
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1660 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1661#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1662 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1663 exit(1);
1664#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1665 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1666 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1667
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1668 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1669 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1670 if (ret_state)
1671 *ret_state = state;
1672 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1673 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1674 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1675}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1676
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1677/*
1678 * Returns the data from Authorization header. Function may be called more
1679 * than once so data is stored in txn->auth_data. When no header is found
1680 * or auth method is unknown auth_method is set to HTTP_AUTH_WRONG to avoid
Thierry FOURNIER98d96952014-01-23 12:13:02 +0100[diff] [blame]1681 * searching again for something we are unable to find anyway. However, if
1682 * the result if valid, the cache is not reused because we would risk to
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1683 * have the credentials overwritten by another stream in parallel.
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1684 */
1685
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]1686/* This bufffer is initialized in the file 'src/haproxy.c'. This length is
1687 * set according to global.tune.bufsize.
1688 */
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1689char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1690
1691int
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1692get_http_auth(struct stream *s)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1693{
1694
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1695 struct http_txn *txn = s->txn;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1696 struct chunk auth_method;
1697 struct hdr_ctx ctx;
1698 char *h, *p;
1699 int len;
1700
1701#ifdef DEBUG_AUTH
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1702 printf("Auth for stream %p: %d\n", s, txn->auth.method);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1703#endif
1704
1705 if (txn->auth.method == HTTP_AUTH_WRONG)
1706 return 0;
1707
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1708 txn->auth.method = HTTP_AUTH_WRONG;
1709
1710 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1711
1712 if (txn->flags & TX_USE_PX_CONN) {
1713 h = "Proxy-Authorization";
1714 len = strlen(h);
1715 } else {
1716 h = "Authorization";
1717 len = strlen(h);
1718 }
1719
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1720 if (!http_find_header2(h, len, s->req.buf->p, &txn->hdr_idx, &ctx))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1721 return 0;
1722
1723 h = ctx.line + ctx.val;
1724
1725 p = memchr(h, ' ', ctx.vlen);
Willy Tarreau5c557d12016-03-13 08:17:02 +0100[diff] [blame]1726 len = p - h;
1727 if (!p || len <= 0)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1728 return 0;
1729
David Carlier7365f7d2016-04-04 11:54:42 +0100[diff] [blame]1730 if (chunk_initlen(&auth_method, h, 0, len) != 1)
1731 return 0;
1732
Willy Tarreau5c557d12016-03-13 08:17:02 +0100[diff] [blame]1733 chunk_initlen(&txn->auth.method_data, p + 1, 0, ctx.vlen - len - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1734
1735 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1736
1737 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1738 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1739
1740 if (len < 0)
1741 return 0;
1742
1743
1744 get_http_auth_buff[len] = '\0';
1745
1746 p = strchr(get_http_auth_buff, ':');
1747
1748 if (!p)
1749 return 0;
1750
1751 txn->auth.user = get_http_auth_buff;
1752 *p = '\0';
1753 txn->auth.pass = p+1;
1754
1755 txn->auth.method = HTTP_AUTH_BASIC;
1756 return 1;
1757 }
1758
1759 return 0;
1760}
1761
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1762
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1763/*
1764 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1765 * depending on the initial msg->msg_state. The caller is responsible for
1766 * ensuring that the message does not wrap. The function can be preempted
1767 * everywhere when data are missing and recalled at the exact same location
1768 * with no information loss. The message may even be realigned between two
1769 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1770 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1771 * fields. Note that msg->sol will be initialized after completing the first
1772 * state, so that none of the msg pointers has to be initialized prior to the
1773 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1774 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1775void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1776{
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1777 enum ht_state state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1778 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1779 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1780
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1781 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1782 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1783 ptr = buf->p + msg->next;
1784 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1785
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1786 if (unlikely(ptr >= end))
1787 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1788
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1789 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1790 /*
1791 * First, states that are specific to the response only.
1792 * We check them first so that request and headers are
1793 * closer to each other (accessed more often).
1794 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1795 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1796 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1797 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1798 /* we have a start of message, but we have to check
1799 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1800 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1801 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1802 if (unlikely(ptr != buf->p)) {
1803 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1804 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1805 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1806 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1807 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1808 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1809 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1810 hdr_idx_init(idx);
1811 state = HTTP_MSG_RPVER;
1812 goto http_msg_rpver;
1813 }
1814
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1815 if (unlikely(!HTTP_IS_CRLF(*ptr))) {
1816 state = HTTP_MSG_RPBEFORE;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1817 goto http_msg_invalid;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1818 }
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1819
1820 if (unlikely(*ptr == '\n'))
1821 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1822 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1823 /* stop here */
1824
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1825 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1826 http_msg_rpbefore_cr:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1827 EXPECT_LF_HERE(ptr, http_msg_invalid, HTTP_MSG_RPBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1828 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1829 /* stop here */
1830
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1831 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1832 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1833 case HTTP_MSG_RPVER_SP:
1834 case HTTP_MSG_RPCODE:
1835 case HTTP_MSG_RPCODE_SP:
1836 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1837 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1838 state, ptr, end,
1839 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1840 if (unlikely(!ptr))
1841 return;
1842
1843 /* we have a full response and we know that we have either a CR
1844 * or an LF at <ptr>.
1845 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1846 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1847
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1848 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1849 if (likely(*ptr == '\r'))
1850 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1851 goto http_msg_rpline_end;
1852
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1853 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1854 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1855 /* msg->sol must point to the first of CR or LF. */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1856 EXPECT_LF_HERE(ptr, http_msg_invalid, HTTP_MSG_RPLINE_END);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1857 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1858 /* stop here */
1859
1860 /*
1861 * Second, states that are specific to the request only
1862 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1863 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1864 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1865 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1866 /* we have a start of message, but we have to check
1867 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1868 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1869 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1870 if (likely(ptr != buf->p)) {
1871 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1872 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1873 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1874 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1875 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1876 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1877 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1878 state = HTTP_MSG_RQMETH;
1879 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1880 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1881
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1882 if (unlikely(!HTTP_IS_CRLF(*ptr))) {
1883 state = HTTP_MSG_RQBEFORE;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1884 goto http_msg_invalid;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1885 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1886
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1887 if (unlikely(*ptr == '\n'))
1888 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1889 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1890 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1891
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1892 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1893 http_msg_rqbefore_cr:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1894 EXPECT_LF_HERE(ptr, http_msg_invalid, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1895 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1896 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1897
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1898 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1899 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1900 case HTTP_MSG_RQMETH_SP:
1901 case HTTP_MSG_RQURI:
1902 case HTTP_MSG_RQURI_SP:
1903 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1904 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1905 state, ptr, end,
1906 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1907 if (unlikely(!ptr))
1908 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1909
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1910 /* we have a full request and we know that we have either a CR
1911 * or an LF at <ptr>.
1912 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1913 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1914
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1915 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1916 if (likely(*ptr == '\r'))
1917 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1918 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1919
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1920 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1921 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1922 /* check for HTTP/0.9 request : no version information available.
1923 * msg->sol must point to the first of CR or LF.
1924 */
1925 if (unlikely(msg->sl.rq.v_l == 0))
1926 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1927
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1928 EXPECT_LF_HERE(ptr, http_msg_invalid, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1929 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1930 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1931
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1932 /*
1933 * Common states below
1934 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1935 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1936 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1937 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1938 if (likely(!HTTP_IS_CRLF(*ptr))) {
1939 goto http_msg_hdr_name;
1940 }
1941
1942 if (likely(*ptr == '\r'))
1943 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1944 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1945
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1946 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1947 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1948 /* assumes msg->sol points to the first char */
1949 if (likely(HTTP_IS_TOKEN(*ptr)))
1950 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1951
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1952 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1953 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1954
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1955 if (likely(msg->err_pos < -1) || *ptr == '\n') {
1956 state = HTTP_MSG_HDR_NAME;
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1957 goto http_msg_invalid;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1958 }
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1959
1960 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1961 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1962
1963 /* and we still accept this non-token character */
1964 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1965
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1966 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1967 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1968 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1969 if (likely(HTTP_IS_SPHT(*ptr)))
1970 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1971
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1972 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1973 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1974
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1975 if (likely(!HTTP_IS_CRLF(*ptr))) {
1976 goto http_msg_hdr_val;
1977 }
1978
1979 if (likely(*ptr == '\r'))
1980 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1981 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1982
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1983 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1984 http_msg_hdr_l1_lf:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]1985 EXPECT_LF_HERE(ptr, http_msg_invalid, HTTP_MSG_HDR_L1_LF);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1986 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lws, HTTP_MSG_HDR_L1_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1987
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1988 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1989 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1990 if (likely(HTTP_IS_SPHT(*ptr))) {
1991 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1992 for (; buf->p + msg->sov < ptr; msg->sov++)
1993 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1994 goto http_msg_hdr_l1_sp;
1995 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1996 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1997 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1998 goto http_msg_complete_header;
1999
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2000 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]2001 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2002 /* assumes msg->sol points to the first char, and msg->sov
2003 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2004 */
Willy Tarreau0431f9d2016-11-05 17:35:40 +0100[diff] [blame]2005
2006 /* speedup: we'll skip packs of 4 or 8 bytes not containing bytes 0x0D
2007 * and lower. In fact since most of the time is spent in the loop, we
2008 * also remove the sign bit test so that bytes 0x8e..0x0d break the
2009 * loop, but we don't care since they're very rare in header values.
2010 */
2011#if defined(__x86_64__)
2012 while (ptr <= end - sizeof(long)) {
2013 if ((*(long *)ptr - 0x0e0e0e0e0e0e0e0eULL) & 0x8080808080808080ULL)
2014 goto http_msg_hdr_val2;
2015 ptr += sizeof(long);
2016 }
2017#endif
2018#if defined(__x86_64__) || \
2019 defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) || \
2020 defined(__ARM_ARCH_7A__)
2021 while (ptr <= end - sizeof(int)) {
2022 if ((*(int*)ptr - 0x0e0e0e0e) & 0x80808080)
2023 goto http_msg_hdr_val2;
2024 ptr += sizeof(int);
2025 }
2026#endif
Willy Tarreau2afff9c2017-01-04 14:44:46 +0100[diff] [blame]2027 if (ptr >= end) {
2028 state = HTTP_MSG_HDR_VAL;
2029 goto http_msg_ood;
2030 }
Willy Tarreau0431f9d2016-11-05 17:35:40 +0100[diff] [blame]2031 http_msg_hdr_val2:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2032 if (likely(!HTTP_IS_CRLF(*ptr)))
Willy Tarreau0431f9d2016-11-05 17:35:40 +0100[diff] [blame]2033 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val2, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2034
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2035 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2036 /* Note: we could also copy eol into ->eoh so that we have the
2037 * real header end in case it ends with lots of LWS, but is this
2038 * really needed ?
2039 */
2040 if (likely(*ptr == '\r'))
2041 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
2042 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2043
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2044 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]2045 http_msg_hdr_l2_lf:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2046 EXPECT_LF_HERE(ptr, http_msg_invalid, HTTP_MSG_HDR_L2_LF);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2047 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lws, HTTP_MSG_HDR_L2_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2048
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2049 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]2050 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2051 if (unlikely(HTTP_IS_SPHT(*ptr))) {
2052 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2053 for (; buf->p + msg->eol < ptr; msg->eol++)
2054 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2055 goto http_msg_hdr_val;
2056 }
2057 http_msg_complete_header:
2058 /*
2059 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2060 * Assumes msg->sol points to the first char, msg->sov points
2061 * to the first character of the value and msg->eol to the
2062 * first CR or LF so we know how the line ends. We insert last
2063 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2064 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2065 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2066 idx, idx->tail) < 0)) {
2067 state = HTTP_MSG_HDR_L2_LWS;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2068 goto http_msg_invalid;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2069 }
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]2070
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2071 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2072 if (likely(!HTTP_IS_CRLF(*ptr))) {
2073 goto http_msg_hdr_name;
2074 }
2075
2076 if (likely(*ptr == '\r'))
2077 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
2078 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]2079
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2080 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]2081 http_msg_last_lf:
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]2082 /* Assumes msg->sol points to the first of either CR or LF.
2083 * Sets ->sov and ->next to the total header length, ->eoh to
2084 * the last CRLF, and ->eol to the last CRLF length (1 or 2).
2085 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2086 EXPECT_LF_HERE(ptr, http_msg_invalid, HTTP_MSG_LAST_LF);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2087 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2088 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]2089 msg->eoh = msg->sol;
2090 msg->sol = 0;
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]2091 msg->eol = msg->sov - msg->eoh;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]2092 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2093 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]2094
2095 case HTTP_MSG_ERROR:
2096 /* this may only happen if we call http_msg_analyser() twice with an error */
2097 break;
2098
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2099 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]2100#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2101 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
2102 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]2103#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]2104 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2105 }
2106 http_msg_ood:
2107 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]2108 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2109 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2110 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2111
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2112 http_msg_invalid:
2113 /* invalid message */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2114 msg->err_state = state;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]2115 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2116 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2117 return;
2118}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]2119
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2120/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
2121 * conversion succeeded, 0 in case of error. If the request was already 1.X,
2122 * nothing is done and 1 is returned.
2123 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2124static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2125{
2126 int delta;
2127 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2128 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2129
2130 if (msg->sl.rq.v_l != 0)
2131 return 1;
2132
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]2133 /* RFC 1945 allows only GET for HTTP/0.9 requests */
2134 if (txn->meth != HTTP_METH_GET)
2135 return 0;
2136
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2137 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2138
2139 if (msg->sl.rq.u_l == 0) {
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]2140 /* HTTP/0.9 requests *must* have a request URI, per RFC 1945 */
2141 return 0;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2142 }
2143 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2144 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " HTTP/1.0\r\n", 11);
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]2145 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2146 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]2147 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2148 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2149 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2150 NULL, NULL);
2151 if (unlikely(!cur_end))
2152 return 0;
2153
2154 /* we have a full HTTP/1.0 request now and we know that
2155 * we have either a CR or an LF at <ptr>.
2156 */
2157 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
2158 return 1;
2159}
2160
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2161/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2162 * and "keep-alive" values. If we already know that some headers may safely
2163 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2164 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
2165 * - bit 1 means remove "keep-alive" headers (in HTTP/1.1 reqs/resp to 1.1).
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2166 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2167 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
2168 * found, and TX_CON_*_SET is adjusted depending on what is left so only
2169 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2170 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2171 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2172void http_parse_connection_header(struct http_txn *txn, struct http_msg *msg, int to_del)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2173{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2174 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2175 const char *hdr_val = "Connection";
2176 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2177
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2178 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2179 return;
2180
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2181 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2182 hdr_val = "Proxy-Connection";
2183 hdr_len = 16;
2184 }
2185
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2186 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2187 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2188 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2189 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
2190 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2191 if (to_del & 2)
2192 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2193 else
2194 txn->flags |= TX_CON_KAL_SET;
2195 }
2196 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
2197 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2198 if (to_del & 1)
2199 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2200 else
2201 txn->flags |= TX_CON_CLO_SET;
2202 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2203 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
2204 txn->flags |= TX_HDR_CONN_UPG;
2205 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2206 }
2207
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2208 txn->flags |= TX_HDR_CONN_PRS;
2209 return;
2210}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2211
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2212/* Apply desired changes on the Connection: header. Values may be removed and/or
2213 * added depending on the <wanted> flags, which are exclusively composed of
2214 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
2215 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
2216 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2217void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2218{
2219 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2220 const char *hdr_val = "Connection";
2221 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2222
2223 ctx.idx = 0;
2224
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2225
2226 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2227 hdr_val = "Proxy-Connection";
2228 hdr_len = 16;
2229 }
2230
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2231 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2232 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2233 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
2234 if (wanted & TX_CON_KAL_SET)
2235 txn->flags |= TX_CON_KAL_SET;
2236 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2237 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2238 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2239 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
2240 if (wanted & TX_CON_CLO_SET)
2241 txn->flags |= TX_CON_CLO_SET;
2242 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2243 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2244 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2245 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2246
2247 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
2248 return;
2249
2250 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
2251 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2252 hdr_val = "Connection: close";
2253 hdr_len = 17;
2254 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2255 hdr_val = "Proxy-Connection: close";
2256 hdr_len = 23;
2257 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2258 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2259 }
2260
2261 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
2262 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2263 hdr_val = "Connection: keep-alive";
2264 hdr_len = 22;
2265 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2266 hdr_val = "Proxy-Connection: keep-alive";
2267 hdr_len = 28;
2268 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2269 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2270 }
2271 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2272}
2273
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2274/* Parse the chunk size at msg->next. Once done, caller should adjust ->next to
2275 * point to the first byte of data after the chunk size, so that we know we can
2276 * forward exactly msg->next bytes. msg->sol contains the exact number of bytes
2277 * forming the chunk size. That way it is always possible to differentiate
2278 * between the start of the body and the start of the data. Return the number
2279 * of byte parsed on success, 0 when some data is missing, <0 on error. Note:
2280 * this function is designed to parse wrapped CRLF at the end of the buffer.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2281 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2282static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2283{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2284 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2285 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2286 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2287 const char *end = buf->data + buf->size;
2288 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2289 unsigned int chunk = 0;
2290
2291 /* The chunk size is in the following form, though we are only
2292 * interested in the size and CRLF :
2293 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
2294 */
2295 while (1) {
2296 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2297 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2298 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2299 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2300 if (c < 0) /* not a hex digit anymore */
2301 break;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2302 if (unlikely(++ptr >= end))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2303 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]2304 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2305 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2306 chunk = (chunk << 4) + c;
2307 }
2308
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2309 /* empty size not allowed */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2310 if (unlikely(ptr == ptr_old))
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2311 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2312
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]2313 while (HTTP_IS_SPHT(*ptr)) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2314 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2315 ptr = buf->data;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2316 if (unlikely(ptr == stop))
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2317 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2318 }
2319
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2320 /* Up to there, we know that at least one byte is present at *ptr. Check
2321 * for the end of chunk size.
2322 */
2323 while (1) {
2324 if (likely(HTTP_IS_CRLF(*ptr))) {
2325 /* we now have a CR or an LF at ptr */
2326 if (likely(*ptr == '\r')) {
2327 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2328 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2329 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2330 return 0;
2331 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2332
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2333 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2334 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2335 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2336 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2337 /* done */
2338 break;
2339 }
2340 else if (*ptr == ';') {
2341 /* chunk extension, ends at next CRLF */
2342 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2343 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2344 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2345 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2346
2347 while (!HTTP_IS_CRLF(*ptr)) {
2348 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2349 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2350 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2351 return 0;
2352 }
2353 /* we have a CRLF now, loop above */
2354 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2355 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2356 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2357 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2358 }
2359
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2360 /* OK we found our CRLF and now <ptr> points to the next byte, which may
2361 * or may not be present. We save the number of bytes parsed into
2362 * msg->sol.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2363 */
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2364 msg->sol = ptr - ptr_old;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2365 if (unlikely(ptr < ptr_old))
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2366 msg->sol += buf->size;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2367 msg->chunk_len = chunk;
2368 msg->body_len += chunk;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2369 return msg->sol;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2370 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2371 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2372 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2373}
2374
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2375/* This function skips trailers in the buffer associated with HTTP message
2376 * <msg>. The first visited position is msg->next. If the end of the trailers is
2377 * found, the function returns >0. So, the caller can automatically schedul it
2378 * to be forwarded, and switch msg->msg_state to HTTP_MSG_DONE. If not enough
2379 * data are available, the function does not change anything except maybe
2380 * msg->sol if it could parse some lines, and returns zero. If a parse error
2381 * is encountered, the function returns < 0 and does not change anything except
2382 * maybe msg->sol. Note that the message must already be in HTTP_MSG_TRAILERS
2383 * state before calling this function, which implies that all non-trailers data
2384 * have already been scheduled for forwarding, and that msg->next exactly
2385 * matches the length of trailers already parsed and not forwarded. It is also
2386 * important to note that this function is designed to be able to parse wrapped
2387 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2388 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2389static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2390{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2391 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2392
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2393 /* we have msg->next which points to next line. Look for CRLF. But
2394 * first, we reset msg->sol */
2395 msg->sol = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2396 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2397 const char *p1 = NULL, *p2 = NULL;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2398 const char *start = b_ptr(buf, msg->next + msg->sol);
2399 const char *stop = bi_end(buf);
2400 const char *ptr = start;
2401 int bytes = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2402
2403 /* scan current line and stop at LF or CRLF */
2404 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2405 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2406 return 0;
2407
2408 if (*ptr == '\n') {
2409 if (!p1)
2410 p1 = ptr;
2411 p2 = ptr;
2412 break;
2413 }
2414
2415 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2416 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2417 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2418 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2419 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2420 p1 = ptr;
2421 }
2422
2423 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2424 if (ptr >= buf->data + buf->size)
2425 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2426 }
2427
2428 /* after LF; point to beginning of next line */
2429 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2430 if (p2 >= buf->data + buf->size)
2431 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2432
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2433 bytes = p2 - start;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2434 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2435 bytes += buf->size;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2436 msg->sol += bytes;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2437
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2438 /* LF/CRLF at beginning of line => end of trailers at p2.
2439 * Everything was scheduled for forwarding, there's nothing left
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2440 * from this message. */
2441 if (p1 == start)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2442 return 1;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2443
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2444 /* OK, next line then */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2445 }
2446}
2447
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2448/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF or
2449 * a possible LF alone at the end of a chunk. The caller should adjust msg->next
2450 * in order to include this part into the next forwarding phase. Note that the
2451 * caller must ensure that ->p points to the first byte to parse. It returns
2452 * the number of bytes parsed on success, so the caller can set msg_state to
2453 * HTTP_MSG_CHUNK_SIZE. If not enough data are available, the function does not
2454 * change anything and returns zero. If a parse error is encountered, the
2455 * function returns < 0. Note: this function is designed to parse wrapped CRLF
2456 * at the end of the buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2457 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2458static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2459{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2460 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2461 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2462 int bytes;
2463
2464 /* NB: we'll check data availabilty at the end. It's not a
2465 * problem because whatever we match first will be checked
2466 * against the correct length.
2467 */
2468 bytes = 1;
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2469 ptr = b_ptr(buf, msg->next);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2470 if (*ptr == '\r') {
2471 bytes++;
2472 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2473 if (ptr >= buf->data + buf->size)
2474 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2475 }
2476
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2477 if (msg->next + bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2478 return 0;
2479
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2480 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2481 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2482 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2483 }
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2484 return bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2485}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2486
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2487/* Parses a qvalue and returns it multipled by 1000, from 0 to 1000. If the
2488 * value is larger than 1000, it is bound to 1000. The parser consumes up to
2489 * 1 digit, one dot and 3 digits and stops on the first invalid character.
2490 * Unparsable qvalues return 1000 as "q=1.000".
2491 */
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2492int parse_qvalue(const char *qvalue, const char **end)
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2493{
2494 int q = 1000;
2495
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2496 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2497 goto out;
2498 q = (*qvalue++ - '0') * 1000;
2499
2500 if (*qvalue++ != '.')
2501 goto out;
2502
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2503 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2504 goto out;
2505 q += (*qvalue++ - '0') * 100;
2506
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2507 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2508 goto out;
2509 q += (*qvalue++ - '0') * 10;
2510
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2511 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2512 goto out;
2513 q += (*qvalue++ - '0') * 1;
2514 out:
2515 if (q > 1000)
2516 q = 1000;
Willy Tarreau38b3aa52014-04-22 23:32:05 +0200[diff] [blame]2517 if (end)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2518 *end = qvalue;
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2519 return q;
2520}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2521
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2522void http_adjust_conn_mode(struct stream *s, struct http_txn *txn, struct http_msg *msg)
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2523{
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]2524 struct proxy *fe = strm_fe(s);
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2525 int tmp = TX_CON_WANT_KAL;
2526
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2527 if (!((fe->options2|s->be->options2) & PR_O2_FAKE_KA)) {
2528 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2529 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN)
2530 tmp = TX_CON_WANT_TUN;
2531
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2532 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2533 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2534 tmp = TX_CON_WANT_TUN;
2535 }
2536
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2537 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2538 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL) {
2539 /* option httpclose + server_close => forceclose */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2540 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2541 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2542 tmp = TX_CON_WANT_CLO;
2543 else
2544 tmp = TX_CON_WANT_SCL;
2545 }
2546
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2547 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2548 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL)
2549 tmp = TX_CON_WANT_CLO;
2550
2551 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
2552 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
2553
2554 if (!(txn->flags & TX_HDR_CONN_PRS) &&
2555 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) {
2556 /* parse the Connection header and possibly clean it */
2557 int to_del = 0;
2558 if ((msg->flags & HTTP_MSGF_VER_11) ||
2559 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2560 !((fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2561 to_del |= 2; /* remove "keep-alive" */
2562 if (!(msg->flags & HTTP_MSGF_VER_11))
2563 to_del |= 1; /* remove "close" */
2564 http_parse_connection_header(txn, msg, to_del);
2565 }
2566
2567 /* check if client or config asks for explicit close in KAL/SCL */
2568 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
2569 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
2570 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
2571 (!(msg->flags & HTTP_MSGF_VER_11) && !(txn->flags & TX_HDR_CONN_KAL)) || /* no "connection: k-a" in 1.0 */
2572 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2573 fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2574 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
2575}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2576
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2577/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2578 * processing can continue on next analysers, or zero if it either needs more
2579 * data or wants to immediately abort the request (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2580 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req.analysers
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2581 * when it has nothing left to do, and may remove any analyser when it wants to
2582 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2583 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2584int http_wait_for_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2585{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2586 /*
2587 * We will parse the partial (or complete) lines.
2588 * We will check the request syntax, and also join multi-line
2589 * headers. An index of all the lines will be elaborated while
2590 * parsing.
2591 *
2592 * For the parsing, we use a 28 states FSM.
2593 *
2594 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2595 * req->buf->p = beginning of request
2596 * req->buf->p + msg->eoh = end of processed headers / start of current one
2597 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2598 * msg->eol = end of current header or line (LF or CRLF)
2599 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2600 *
2601 * At end of parsing, we may perform a capture of the error (if any), and
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2602 * we will set a few fields (txn->meth, sn->flags/SF_REDIRECTABLE).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2603 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2604 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2605 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2606
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2607 int cur_idx;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2608 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]2609 struct http_txn *txn = s->txn;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2610 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2611 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2612
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2613 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2614 now_ms, __FUNCTION__,
2615 s,
2616 req,
2617 req->rex, req->wex,
2618 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2619 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2620 req->analysers);
2621
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2622 /* we're speaking HTTP here, so let's speak HTTP to the client */
2623 s->srv_error = http_return_srv_error;
2624
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2625 /* There's a protected area at the end of the buffer for rewriting
2626 * purposes. We don't want to start to parse the request if the
2627 * protected area is affected, because we may have to move processed
2628 * data later, which is much more complicated.
2629 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2630 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Thierry FOURNIER / OZON.IO4cac3592016-07-28 17:19:45 +0200[diff] [blame]2631
2632 /* This point is executed when some data is avalaible for analysis,
2633 * so we log the end of the idle time. */
2634 if (s->logs.t_idle == -1)
2635 s->logs.t_idle = tv_ms_elapsed(&s->logs.tv_accept, &now) - s->logs.t_handshake;
2636
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2637 if (txn->flags & TX_NOT_FIRST) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]2638 if (unlikely(!channel_is_rewritable(req))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2639 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2640 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2641 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2642 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2643 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]2644 req->flags |= CF_WAKE_WRITE;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2645 return 0;
2646 }
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2647 if (unlikely(bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2648 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite))
2649 buffer_slow_realign(req->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2650 }
2651
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2652 /* Note that we have the same problem with the response ; we
2653 * may want to send a redirect, error or anything which requires
2654 * some spare space. So we'll ensure that we have at least
2655 * maxrewrite bytes available in the response buffer before
2656 * processing that one. This will only affect pipelined
2657 * keep-alive requests.
2658 */
2659 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2660 unlikely(!channel_is_rewritable(&s->res) ||
2661 bi_end(s->res.buf) < b_ptr(s->res.buf, txn->rsp.next) ||
2662 bi_end(s->res.buf) > s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)) {
2663 if (s->res.buf->o) {
2664 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]2665 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2666 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2667 channel_dont_connect(req);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2668 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
2669 s->res.flags |= CF_WAKE_WRITE;
2670 s->res.analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2671 return 0;
2672 }
2673 }
2674
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2675 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2676 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2677 }
2678
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2679 /* 1: we might have to print this header in debug mode */
2680 if (unlikely((global.mode & MODE_DEBUG) &&
2681 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]2682 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2683 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2684
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2685 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2686 /* this is a bit complex : in case of error on the request line,
2687 * we know that rq.l is still zero, so we display only the part
2688 * up to the end of the line (truncated by debug_hdr).
2689 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2690 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2691 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2692
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2693 sol += hdr_idx_first_pos(&txn->hdr_idx);
2694 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2695
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2696 while (cur_idx) {
2697 eol = sol + txn->hdr_idx.v[cur_idx].len;
2698 debug_hdr("clihdr", s, sol, eol);
2699 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2700 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2701 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2702 }
2703
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2704
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2705 /*
2706 * Now we quickly check if we have found a full valid request.
2707 * If not so, we check the FD and buffer states before leaving.
2708 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2709 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2710 * requests are checked first. When waiting for a second request
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2711 * on a keep-alive stream, if we encounter and error, close, t/o,
2712 * we note the error in the stream flags but don't set any state.
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2713 * Since the error will be noted there, it will not be counted by
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2714 * process_stream() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2715 * Last, we may increase some tracked counters' http request errors on
2716 * the cases that are deliberately the client's fault. For instance,
2717 * a timeout or connection reset is not counted as an error. However
2718 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2719 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2720
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2721 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2722 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2723 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2724 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2725 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2726 stream_inc_http_req_ctr(s);
2727 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2728 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2729 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2730 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2731
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2732 /* 1: Since we are in header mode, if there's no space
2733 * left for headers, we won't be able to free more
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2734 * later, so the stream will never terminate. We
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2735 * must terminate it now.
2736 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2737 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2738 /* FIXME: check if URI is set and return Status
2739 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2740 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2741 stream_inc_http_req_ctr(s);
2742 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2743 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2744 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2745 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2746 goto return_bad_req;
2747 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2748
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2749 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2750 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2751 if (!(s->flags & SF_ERR_MASK))
2752 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2753
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2754 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2755 goto failed_keep_alive;
2756
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2757 if (sess->fe->options & PR_O_IGNORE_PRB)
2758 goto failed_keep_alive;
2759
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2760 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2761 if (msg->err_pos >= 0) {
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2762 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]2763 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2764 }
2765
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2766 txn->status = 400;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2767 msg->err_state = msg->msg_state;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2768 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2769 http_reply_and_close(s, txn->status, NULL);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]2770 req->analysers &= AN_REQ_FLT_END;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2771 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2772 proxy_inc_fe_req_ctr(sess->fe);
2773 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2774 if (sess->listener->counters)
2775 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2776
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2777 if (!(s->flags & SF_FINST_MASK))
2778 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2779 return 0;
2780 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2781
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2782 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2783 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]2784 if (!(s->flags & SF_ERR_MASK))
2785 s->flags |= SF_ERR_CLITO;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2786
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2787 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2788 goto failed_keep_alive;
2789
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2790 if (sess->fe->options & PR_O_IGNORE_PRB)
2791 goto failed_keep_alive;
2792
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2793 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2794 if (msg->err_pos >= 0) {
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2795 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]2796 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2797 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2798 txn->status = 408;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2799 msg->err_state = msg->msg_state;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2800 msg->msg_state = HTTP_MSG_ERROR;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]2801 http_reply_and_close(s, txn->status, http_error_message(s));
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]2802 req->analysers &= AN_REQ_FLT_END;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2803
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2804 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2805 proxy_inc_fe_req_ctr(sess->fe);
2806 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2807 if (sess->listener->counters)
2808 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2809
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2810 if (!(s->flags & SF_FINST_MASK))
2811 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2812 return 0;
2813 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2814
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2815 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2816 else if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2817 if (!(s->flags & SF_ERR_MASK))
2818 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2819
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2820 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2821 goto failed_keep_alive;
2822
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2823 if (sess->fe->options & PR_O_IGNORE_PRB)
2824 goto failed_keep_alive;
2825
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2826 if (msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2827 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]2828 txn->status = 400;
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2829 msg->err_state = msg->msg_state;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2830 msg->msg_state = HTTP_MSG_ERROR;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]2831 http_reply_and_close(s, txn->status, http_error_message(s));
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]2832 req->analysers &= AN_REQ_FLT_END;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2833 stream_inc_http_err_ctr(s);
2834 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2835 proxy_inc_fe_req_ctr(sess->fe);
2836 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2837 if (sess->listener->counters)
2838 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2839
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2840 if (!(s->flags & SF_FINST_MASK))
2841 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2842 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2843 }
2844
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2845 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2846 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2847 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2848#ifdef TCP_QUICKACK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2849 if (sess->listener->options & LI_O_NOQUICKACK && req->buf->i &&
2850 objt_conn(sess->origin) && conn_ctrl_ready(__objt_conn(sess->origin))) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2851 /* We need more data, we have to re-enable quick-ack in case we
2852 * previously disabled it, otherwise we might cause the client
2853 * to delay next data.
2854 */
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2855 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]2856 }
2857#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2858
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2859 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2860 /* If the client starts to talk, let's fall back to
2861 * request timeout processing.
2862 */
2863 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2864 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2865 }
2866
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2867 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2868 if (!tick_isset(req->analyse_exp)) {
2869 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2870 (txn->flags & TX_WAIT_NEXT_RQ) &&
2871 tick_isset(s->be->timeout.httpka))
2872 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2873 else
2874 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2875 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2876
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2877 /* we're not ready yet */
2878 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2879
2880 failed_keep_alive:
2881 /* Here we process low-level errors for keep-alive requests. In
2882 * short, if the request is not the first one and it experiences
2883 * a timeout, read error or shutdown, we just silently close so
2884 * that the client can try again.
2885 */
2886 txn->status = 0;
2887 msg->msg_state = HTTP_MSG_RQBEFORE;
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]2888 req->analysers &= AN_REQ_FLT_END;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2889 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]2890 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2891 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2892 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2893 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2894 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2895
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2896 /* OK now we have a complete HTTP request with indexed headers. Let's
2897 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2898 * 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]2899 * 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]2900 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2901 * byte after the last LF. msg->sov points to the first byte of data.
2902 * msg->eol cannot be trusted because it may have been left uninitialized
2903 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2904 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2905
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2906 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2907 proxy_inc_fe_req_ctr(sess->fe); /* one more valid request for this FE */
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2908
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2909 if (txn->flags & TX_WAIT_NEXT_RQ) {
2910 /* kill the pending keep-alive timeout */
2911 txn->flags &= ~TX_WAIT_NEXT_RQ;
2912 req->analyse_exp = TICK_ETERNITY;
2913 }
2914
2915
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2916 /* Maybe we found in invalid header name while we were configured not
2917 * to block on that, so we have to capture it now.
2918 */
2919 if (unlikely(msg->err_pos >= 0))
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]2920 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]2921
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2922 /*
2923 * 1: identify the method
2924 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2925 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2926
2927 /* we can make use of server redirect on GET and HEAD */
2928 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2929 s->flags |= SF_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2930
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2931 /*
2932 * 2: check if the URI matches the monitor_uri.
2933 * We have to do this for every request which gets in, because
2934 * the monitor-uri is defined by the frontend.
2935 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2936 if (unlikely((sess->fe->monitor_uri_len != 0) &&
2937 (sess->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2938 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2939 sess->fe->monitor_uri,
2940 sess->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2941 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2942 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2943 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2944 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2945
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2946 s->flags |= SF_MONITOR;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2947 sess->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2948
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2949 /* Check if we want to fail this monitor request or not */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2950 list_for_each_entry(cond, &sess->fe->mon_fail_cond, list) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]2951 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]2952
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2953 ret = acl_pass(ret);
2954 if (cond->pol == ACL_COND_UNLESS)
2955 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2956
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2957 if (ret) {
2958 /* we fail this request, let's return 503 service unavail */
2959 txn->status = 503;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]2960 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2961 if (!(s->flags & SF_ERR_MASK))
2962 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2963 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2964 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2965 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2966
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2967 /* nothing to fail, let's reply normaly */
2968 txn->status = 200;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]2969 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2970 if (!(s->flags & SF_ERR_MASK))
2971 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2972 goto return_prx_cond;
2973 }
2974
2975 /*
2976 * 3: Maybe we have to copy the original REQURI for the logs ?
2977 * Note: we cannot log anymore if the request has been
2978 * classified as invalid.
2979 */
2980 if (unlikely(s->logs.logwait & LW_REQ)) {
2981 /* we have a complete HTTP request that we must log */
2982 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2983 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2984
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2985 if (urilen >= REQURI_LEN)
2986 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2987 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2988 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2989
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2990 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2991 s->do_log(s);
2992 } else {
2993 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2994 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2995 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2996
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]2997 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
2998 * exactly one digit "." one digit. This check may be disabled using
2999 * option accept-invalid-http-request.
3000 */
3001 if (!(sess->fe->options2 & PR_O2_REQBUG_OK)) {
3002 if (msg->sl.rq.v_l != 8) {
3003 msg->err_pos = msg->sl.rq.v;
3004 goto return_bad_req;
3005 }
3006
3007 if (req->buf->p[msg->sl.rq.v + 4] != '/' ||
3008 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 5]) ||
3009 req->buf->p[msg->sl.rq.v + 6] != '.' ||
3010 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 7])) {
3011 msg->err_pos = msg->sl.rq.v + 4;
3012 goto return_bad_req;
3013 }
3014 }
Willy Tarreau13317662015-05-01 13:47:08 +0200[diff] [blame]3015 else {
3016 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
3017 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
3018 goto return_bad_req;
3019 }
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]3020
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3021 /* ... and check if the request is HTTP/1.1 or above */
3022 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3023 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
3024 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
3025 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3026 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3027
3028 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]3029 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]3030
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3031 /* if the frontend has "option http-use-proxy-header", we'll check if
3032 * we have what looks like a proxied connection instead of a connection,
3033 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
3034 * Note that this is *not* RFC-compliant, however browsers and proxies
3035 * happen to do that despite being non-standard :-(
3036 * We consider that a request not beginning with either '/' or '*' is
3037 * a proxied connection, which covers both "scheme://location" and
3038 * CONNECT ip:port.
3039 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3040 if ((sess->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3041 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]3042 txn->flags |= TX_USE_PX_CONN;
3043
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3044 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3045 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3046
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3047 /* 5: we may need to capture headers */
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]3048 if (unlikely((s->logs.logwait & LW_REQHDR) && s->req_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3049 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]3050 s->req_cap, sess->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3051
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3052 /* 6: determine the transfer-length according to RFC2616 #4.4, updated
3053 * by RFC7230#3.3.3 :
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3054 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3055 * The length of a message body is determined by one of the following
3056 * (in order of precedence):
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3057 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3058 * 1. Any response to a HEAD request and any response with a 1xx
3059 * (Informational), 204 (No Content), or 304 (Not Modified) status
3060 * code is always terminated by the first empty line after the
3061 * header fields, regardless of the header fields present in the
3062 * message, and thus cannot contain a message body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3063 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3064 * 2. Any 2xx (Successful) response to a CONNECT request implies that
3065 * the connection will become a tunnel immediately after the empty
3066 * line that concludes the header fields. A client MUST ignore any
3067 * Content-Length or Transfer-Encoding header fields received in
3068 * such a message.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3069 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3070 * 3. If a Transfer-Encoding header field is present and the chunked
3071 * transfer coding (Section 4.1) is the final encoding, the message
3072 * body length is determined by reading and decoding the chunked
3073 * data until the transfer coding indicates the data is complete.
3074 *
3075 * If a Transfer-Encoding header field is present in a response and
3076 * the chunked transfer coding is not the final encoding, the
3077 * message body length is determined by reading the connection until
3078 * it is closed by the server. If a Transfer-Encoding header field
3079 * is present in a request and the chunked transfer coding is not
3080 * the final encoding, the message body length cannot be determined
3081 * reliably; the server MUST respond with the 400 (Bad Request)
3082 * status code and then close the connection.
3083 *
3084 * If a message is received with both a Transfer-Encoding and a
3085 * Content-Length header field, the Transfer-Encoding overrides the
3086 * Content-Length. Such a message might indicate an attempt to
3087 * perform request smuggling (Section 9.5) or response splitting
3088 * (Section 9.4) and ought to be handled as an error. A sender MUST
3089 * remove the received Content-Length field prior to forwarding such
3090 * a message downstream.
3091 *
3092 * 4. If a message is received without Transfer-Encoding and with
3093 * either multiple Content-Length header fields having differing
3094 * field-values or a single Content-Length header field having an
3095 * invalid value, then the message framing is invalid and the
3096 * recipient MUST treat it as an unrecoverable error. If this is a
3097 * request message, the server MUST respond with a 400 (Bad Request)
3098 * status code and then close the connection. If this is a response
3099 * message received by a proxy, the proxy MUST close the connection
3100 * to the server, discard the received response, and send a 502 (Bad
3101 * Gateway) response to the client. If this is a response message
3102 * received by a user agent, the user agent MUST close the
3103 * connection to the server and discard the received response.
3104 *
3105 * 5. If a valid Content-Length header field is present without
3106 * Transfer-Encoding, its decimal value defines the expected message
3107 * body length in octets. If the sender closes the connection or
3108 * the recipient times out before the indicated number of octets are
3109 * received, the recipient MUST consider the message to be
3110 * incomplete and close the connection.
3111 *
3112 * 6. If this is a request message and none of the above are true, then
3113 * the message body length is zero (no message body is present).
3114 *
3115 * 7. Otherwise, this is a response message without a declared message
3116 * body length, so the message body length is determined by the
3117 * number of octets received prior to the server closing the
3118 * connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3119 */
3120
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3121 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3122 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]3123 while (http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3124 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3125 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
3126 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]3127 /* chunked not last, return badreq */
3128 goto return_bad_req;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3129 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3130 }
3131
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]3132 /* Chunked requests must have their content-length removed */
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3133 ctx.idx = 0;
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]3134 if (msg->flags & HTTP_MSGF_TE_CHNK) {
3135 while (http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx))
3136 http_remove_header2(msg, &txn->hdr_idx, &ctx);
3137 }
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]3138 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]3139 signed long long cl;
3140
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3141 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3142 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3143 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3144 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3145
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3146 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3147 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3148 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3149 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3150
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3151 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3152 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3153 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3154 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3155
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3156 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3157 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3158 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3159 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3160
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3161 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3162 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3163 }
3164
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]3165 /* even bodyless requests have a known length */
3166 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3167
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]3168 /* Until set to anything else, the connection mode is set as Keep-Alive. It will
3169 * only change if both the request and the config reference something else.
3170 * Option httpclose by itself sets tunnel mode where headers are mangled.
3171 * However, if another mode is set, it will affect it (eg: server-close/
3172 * keep-alive + httpclose = close). Note that we avoid to redo the same work
3173 * if FE and BE have the same settings (common). The method consists in
3174 * checking if options changed between the two calls (implying that either
3175 * one is non-null, or one of them is non-null and we are there for the first
3176 * time.
3177 */
3178 if (!(txn->flags & TX_HDR_CONN_PRS) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3179 ((sess->fe->options & PR_O_HTTP_MODE) != (s->be->options & PR_O_HTTP_MODE)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]3180 http_adjust_conn_mode(s, txn, msg);
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]3181
Willy Tarreau9fbe18e2015-05-01 22:42:08 +0200[diff] [blame]3182 /* we may have to wait for the request's body */
3183 if ((s->be->options & PR_O_WREQ_BODY) &&
3184 (msg->body_len || (msg->flags & HTTP_MSGF_TE_CHNK)))
3185 req->analysers |= AN_REQ_HTTP_BODY;
3186
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3187 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3188 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3189 req->analyse_exp = TICK_ETERNITY;
3190 return 1;
3191
3192 return_bad_req:
3193 /* We centralize bad requests processing here */
3194 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3195 /* we detected a parsing error. We want to archive this request
3196 * in the dedicated proxy area for later troubleshooting.
3197 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]3198 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]3199 }
3200
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]3201 txn->req.err_state = txn->req.msg_state;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3202 txn->req.msg_state = HTTP_MSG_ERROR;
3203 txn->status = 400;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]3204 http_reply_and_close(s, txn->status, http_error_message(s));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3205
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3206 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]3207 if (sess->listener->counters)
3208 sess->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3209
3210 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]3211 if (!(s->flags & SF_ERR_MASK))
3212 s->flags |= SF_ERR_PRXCOND;
3213 if (!(s->flags & SF_FINST_MASK))
3214 s->flags |= SF_FINST_R;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3215
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]3216 req->analysers &= AN_REQ_FLT_END;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3217 req->analyse_exp = TICK_ETERNITY;
3218 return 0;
3219}
3220
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]3221
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3222/* This function prepares an applet to handle the stats. It can deal with the
3223 * "100-continue" expectation, check that admin rules are met for POST requests,
3224 * and program a response message if something was unexpected. It cannot fail
3225 * 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]3226 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3227 * s->target which is supposed to already point to the stats applet. The caller
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3228 * is expected to have already assigned an appctx to the stream.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3229 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3230int http_handle_stats(struct stream *s, struct channel *req)
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3231{
3232 struct stats_admin_rule *stats_admin_rule;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]3233 struct stream_interface *si = &s->si[1];
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3234 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3235 struct http_txn *txn = s->txn;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3236 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3237 struct uri_auth *uri_auth = s->be->uri_auth;
3238 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3239 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3240
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3241 appctx = si_appctx(si);
3242 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
3243 appctx->st1 = appctx->st2 = 0;
3244 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
3245 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3246 if ((msg->flags & HTTP_MSGF_VER_11) && (s->txn->meth != HTTP_METH_HEAD))
Willy Tarreauaf3cf702014-04-22 22:19:53 +0200[diff] [blame]3247 appctx->ctx.stats.flags |= STAT_CHUNKED;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3248
3249 uri = msg->chn->buf->p + msg->sl.rq.u;
3250 lookup = uri + uri_auth->uri_len;
3251
3252 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
3253 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3254 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3255 break;
3256 }
3257 }
3258
3259 if (uri_auth->refresh) {
3260 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
3261 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3262 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3263 break;
3264 }
3265 }
3266 }
3267
3268 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
3269 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3270 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3271 break;
3272 }
3273 }
3274
Willy Tarreau1e62df92016-01-11 18:57:53 +0100[diff] [blame]3275 for (h = lookup; h <= uri + msg->sl.rq.u_l - 6; h++) {
3276 if (memcmp(h, ";typed", 6) == 0) {
3277 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
3278 appctx->ctx.stats.flags |= STAT_FMT_TYPED;
3279 break;
3280 }
3281 }
3282
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3283 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3284 if (memcmp(h, ";st=", 4) == 0) {
3285 int i;
3286 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3287 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3288 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
3289 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3290 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3291 break;
3292 }
3293 }
3294 break;
3295 }
3296 }
3297
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3298 appctx->ctx.stats.scope_str = 0;
3299 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3300 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3301 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
3302 int itx = 0;
3303 const char *h2;
3304 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
3305 const char *err;
3306
3307 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
3308 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3309 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3310 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
3311 itx++;
3312 h++;
3313 }
3314
3315 if (itx > STAT_SCOPE_TXT_MAXLEN)
3316 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3317 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3318
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3319 /* 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]3320 memcpy(scope_txt, h2, itx);
3321 scope_txt[itx] = '\0';
3322 err = invalid_char(scope_txt);
3323 if (err) {
3324 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3325 appctx->ctx.stats.scope_str = 0;
3326 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3327 }
3328 break;
3329 }
3330 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3331
3332 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3333 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3334 int ret = 1;
3335
3336 if (stats_admin_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3337 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]3338 ret = acl_pass(ret);
3339 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3340 ret = !ret;
3341 }
3342
3343 if (ret) {
3344 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3345 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3346 break;
3347 }
3348 }
3349
3350 /* Was the status page requested with a POST ? */
Willy Tarreaub8cdf522015-05-29 01:09:15 +0200[diff] [blame]3351 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3352 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreaucfe7fdd2014-04-26 22:08:32 +0200[diff] [blame]3353 /* we'll need the request body, possibly after sending 100-continue */
Willy Tarreaub8cdf522015-05-29 01:09:15 +0200[diff] [blame]3354 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE)
3355 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3356 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3357 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3358 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3359 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
3360 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]3361 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3362 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3363 else {
3364 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3365 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3366 }
3367
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3368 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3369 return 1;
3370}
3371
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3372/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
3373 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
3374 */
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3375void inet_set_tos(int fd, const struct sockaddr_storage *from, int tos)
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3376{
3377#ifdef IP_TOS
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3378 if (from->ss_family == AF_INET)
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3379 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3380#endif
3381#ifdef IPV6_TCLASS
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3382 if (from->ss_family == AF_INET6) {
3383 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)from)->sin6_addr))
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3384 /* v4-mapped addresses need IP_TOS */
3385 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3386 else
3387 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
3388 }
3389#endif
3390}
3391
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3392int http_transform_header_str(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3393 const char* name, unsigned int name_len,
3394 const char *str, struct my_regex *re,
3395 int action)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3396{
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3397 struct hdr_ctx ctx;
3398 char *buf = msg->chn->buf->p;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3399 struct hdr_idx *idx = &s->txn->hdr_idx;
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3400 int (*http_find_hdr_func)(const char *name, int len, char *sol,
3401 struct hdr_idx *idx, struct hdr_ctx *ctx);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3402 struct chunk *output = get_trash_chunk();
3403
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3404 ctx.idx = 0;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3405
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3406 /* Choose the header browsing function. */
3407 switch (action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3408 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3409 http_find_hdr_func = http_find_header2;
3410 break;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3411 case ACT_HTTP_REPLACE_HDR:
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3412 http_find_hdr_func = http_find_full_header2;
3413 break;
3414 default: /* impossible */
3415 return -1;
3416 }
3417
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3418 while (http_find_hdr_func(name, name_len, buf, idx, &ctx)) {
3419 struct hdr_idx_elem *hdr = idx->v + ctx.idx;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3420 int delta;
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3421 char *val = ctx.line + ctx.val;
3422 char* val_end = val + ctx.vlen;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3423
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3424 if (!regex_exec_match2(re, val, val_end-val, MAX_MATCH, pmatch, 0))
3425 continue;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3426
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3427 output->len = exp_replace(output->str, output->size, val, str, pmatch);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3428 if (output->len == -1)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3429 return -1;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3430
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3431 delta = buffer_replace2(msg->chn->buf, val, val_end, output->str, output->len);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3432
3433 hdr->len += delta;
3434 http_msg_move_end(msg, delta);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3435
3436 /* Adjust the length of the current value of the index. */
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3437 ctx.vlen += delta;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3438 }
3439
3440 return 0;
3441}
3442
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3443static int http_transform_header(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3444 const char* name, unsigned int name_len,
3445 struct list *fmt, struct my_regex *re,
3446 int action)
3447{
Christopher Faulet07a0fec2017-02-08 12:17:07 +0100[diff] [blame]3448 struct chunk *replace;
3449 int ret = -1;
3450
3451 replace = alloc_trash_chunk();
3452 if (!replace)
3453 goto leave;
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3454
3455 replace->len = build_logline(s, replace->str, replace->size, fmt);
3456 if (replace->len >= replace->size - 1)
Christopher Faulet07a0fec2017-02-08 12:17:07 +0100[diff] [blame]3457 goto leave;
3458
3459 ret = http_transform_header_str(s, msg, name, name_len, replace->str, re, action);
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3460
Christopher Faulet07a0fec2017-02-08 12:17:07 +0100[diff] [blame]3461 leave:
3462 free_trash_chunk(replace);
3463 return ret;
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3464}
3465
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3466/* Executes the http-request rules <rules> for stream <s>, proxy <px> and
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3467 * transaction <txn>. Returns the verdict of the first rule that prevents
3468 * further processing of the request (auth, deny, ...), and defaults to
3469 * HTTP_RULE_RES_STOP if it executed all rules or stopped on an allow, or
3470 * 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]3471 * on txn->flags if it encounters a tarpit rule. If <deny_status> is not NULL
3472 * and a deny/tarpit rule is matched, it will be filled with this rule's deny
3473 * status.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3474 */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3475enum rule_result
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3476http_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]3477{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3478 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3479 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3480 struct connection *cli_conn;
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]3481 struct act_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3482 struct hdr_ctx ctx;
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3483 const char *auth_realm;
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3484 int act_flags = 0;
Thierry Fournier4b788f72016-06-01 13:35:36 +0200[diff] [blame]3485 int len;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3486
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3487 /* If "the current_rule_list" match the executed rule list, we are in
3488 * resume condition. If a resume is needed it is always in the action
3489 * and never in the ACL or converters. In this case, we initialise the
3490 * current rule, and go to the action execution point.
3491 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3492 if (s->current_rule) {
3493 rule = s->current_rule;
3494 s->current_rule = NULL;
3495 if (s->current_rule_list == rules)
3496 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3497 }
3498 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3499
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3500 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3501
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3502 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3503 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3504 int ret;
3505
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3506 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]3507 ret = acl_pass(ret);
3508
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3509 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3510 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3511
3512 if (!ret) /* condition not matched */
3513 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3514 }
3515
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3516 act_flags |= ACT_FLAG_FIRST;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3517resume_execution:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3518 switch (rule->action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3519 case ACT_ACTION_ALLOW:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3520 return HTTP_RULE_RES_STOP;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3521
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3522 case ACT_ACTION_DENY:
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3523 if (deny_status)
3524 *deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3525 return HTTP_RULE_RES_DENY;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3526
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3527 case ACT_HTTP_REQ_TARPIT:
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3528 txn->flags |= TX_CLTARPIT;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3529 if (deny_status)
3530 *deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3531 return HTTP_RULE_RES_DENY;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3532
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3533 case ACT_HTTP_REQ_AUTH:
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3534 /* Auth might be performed on regular http-req rules as well as on stats */
3535 auth_realm = rule->arg.auth.realm;
3536 if (!auth_realm) {
3537 if (px->uri_auth && rules == &px->uri_auth->http_req_rules)
3538 auth_realm = STATS_DEFAULT_REALM;
3539 else
3540 auth_realm = px->id;
3541 }
3542 /* send 401/407 depending on whether we use a proxy or not. We still
3543 * count one error, because normal browsing won't significantly
3544 * increase the counter but brute force attempts will.
3545 */
3546 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, auth_realm);
3547 txn->status = (txn->flags & TX_USE_PX_CONN) ? 407 : 401;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]3548 http_reply_and_close(s, txn->status, &trash);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3549 stream_inc_http_err_ctr(s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3550 return HTTP_RULE_RES_ABRT;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3551
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3552 case ACT_HTTP_REDIR:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3553 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3554 return HTTP_RULE_RES_BADREQ;
3555 return HTTP_RULE_RES_DONE;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3556
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3557 case ACT_HTTP_SET_NICE:
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3558 s->task->nice = rule->arg.nice;
3559 break;
3560
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3561 case ACT_HTTP_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3562 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3563 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]3564 break;
3565
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3566 case ACT_HTTP_SET_MARK:
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3567#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3568 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3569 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]3570#endif
3571 break;
3572
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3573 case ACT_HTTP_SET_LOGL:
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3574 s->logs.level = rule->arg.loglevel;
3575 break;
3576
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3577 case ACT_HTTP_REPLACE_HDR:
3578 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3579 if (http_transform_header(s, &txn->req, rule->arg.hdr_add.name,
3580 rule->arg.hdr_add.name_len,
3581 &rule->arg.hdr_add.fmt,
3582 &rule->arg.hdr_add.re, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3583 return HTTP_RULE_RES_BADREQ;
3584 break;
3585
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3586 case ACT_HTTP_DEL_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3587 ctx.idx = 0;
3588 /* remove all occurrences of the header */
3589 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3590 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3591 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3592 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3593 break;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3594
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3595 case ACT_HTTP_SET_HDR:
3596 case ACT_HTTP_ADD_HDR:
Thierry Fournier4b788f72016-06-01 13:35:36 +0200[diff] [blame]3597 /* The scope of the trash buffer must be limited to this function. The
3598 * build_logline() function can execute a lot of other function which
3599 * can use the trash buffer. So for limiting the scope of this global
3600 * buffer, we build first the header value using build_logline, and
3601 * after we store the header name.
3602 */
3603 len = rule->arg.hdr_add.name_len + 2,
3604 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]3605 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
Thierry Fournier4b788f72016-06-01 13:35:36 +0200[diff] [blame]3606 trash.str[rule->arg.hdr_add.name_len] = ':';
3607 trash.str[rule->arg.hdr_add.name_len + 1] = ' ';
3608 trash.len = len;
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3609
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3610 if (rule->action == ACT_HTTP_SET_HDR) {
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3611 /* remove all occurrences of the header */
3612 ctx.idx = 0;
3613 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3614 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3615 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
3616 }
3617 }
3618
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3619 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3620 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3621
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3622 case ACT_HTTP_DEL_ACL:
3623 case ACT_HTTP_DEL_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3624 struct pat_ref *ref;
3625 char *key;
3626 int len;
3627
3628 /* collect reference */
3629 ref = pat_ref_lookup(rule->arg.map.ref);
3630 if (!ref)
3631 continue;
3632
3633 /* collect key */
3634 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3635 key = trash.str;
3636 key[len] = '\0';
3637
3638 /* perform update */
3639 /* returned code: 1=ok, 0=ko */
3640 pat_ref_delete(ref, key);
3641
3642 break;
3643 }
3644
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3645 case ACT_HTTP_ADD_ACL: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3646 struct pat_ref *ref;
3647 char *key;
3648 struct chunk *trash_key;
3649 int len;
3650
3651 trash_key = get_trash_chunk();
3652
3653 /* collect reference */
3654 ref = pat_ref_lookup(rule->arg.map.ref);
3655 if (!ref)
3656 continue;
3657
3658 /* collect key */
3659 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3660 key = trash_key->str;
3661 key[len] = '\0';
3662
3663 /* perform update */
3664 /* add entry only if it does not already exist */
3665 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3666 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3667
3668 break;
3669 }
3670
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3671 case ACT_HTTP_SET_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3672 struct pat_ref *ref;
3673 char *key, *value;
3674 struct chunk *trash_key, *trash_value;
3675 int len;
3676
3677 trash_key = get_trash_chunk();
3678 trash_value = get_trash_chunk();
3679
3680 /* collect reference */
3681 ref = pat_ref_lookup(rule->arg.map.ref);
3682 if (!ref)
3683 continue;
3684
3685 /* collect key */
3686 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3687 key = trash_key->str;
3688 key[len] = '\0';
3689
3690 /* collect value */
3691 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3692 value = trash_value->str;
3693 value[len] = '\0';
3694
3695 /* perform update */
3696 if (pat_ref_find_elt(ref, key) != NULL)
3697 /* update entry if it exists */
3698 pat_ref_set(ref, key, value, NULL);
3699 else
3700 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3701 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3702
3703 break;
3704 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3705
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3706 case ACT_CUSTOM:
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3707 if ((px->options & PR_O_ABRT_CLOSE) && (s->req.flags & (CF_SHUTR|CF_READ_NULL|CF_READ_ERROR)))
3708 act_flags |= ACT_FLAG_FINAL;
Willy Tarreau39458682015-09-27 10:33:15 +0200[diff] [blame]3709
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3710 switch (rule->action_ptr(rule, px, s->sess, s, act_flags)) {
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3711 case ACT_RET_ERR:
3712 case ACT_RET_CONT:
3713 break;
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3714 case ACT_RET_STOP:
3715 return HTTP_RULE_RES_DONE;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3716 case ACT_RET_YIELD:
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3717 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3718 return HTTP_RULE_RES_YIELD;
3719 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3720 break;
3721
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3722 case ACT_ACTION_TRK_SC0 ... ACT_ACTION_TRK_SCMAX:
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3723 /* Note: only the first valid tracking parameter of each
3724 * applies.
3725 */
3726
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3727 if (stkctr_entry(&s->stkctr[http_trk_idx(rule->action)]) == NULL) {
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3728 struct stktable *t;
3729 struct stksess *ts;
3730 struct stktable_key *key;
3731 void *ptr;
3732
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]3733 t = rule->arg.trk_ctr.table.t;
3734 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]3735
3736 if (key && (ts = stktable_get_entry(t, key))) {
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3737 stream_track_stkctr(&s->stkctr[http_trk_idx(rule->action)], t, ts);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3738
3739 /* let's count a new HTTP request as it's the first time we do it */
3740 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT);
3741 if (ptr)
3742 stktable_data_cast(ptr, http_req_cnt)++;
3743
3744 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE);
3745 if (ptr)
3746 update_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
3747 t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1);
3748
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3749 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_CONTENT);
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3750 if (sess->fe != s->be)
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3751 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_BACKEND);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3752 }
3753 }
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3754 break;
3755
Thierry FOURNIER22e49012015-08-05 19:13:48 +0200[diff] [blame]3756 /* other flags exists, but normaly, they never be matched. */
3757 default:
3758 break;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3759 }
3760 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3761
3762 /* we reached the end of the rules, nothing to report */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3763 return HTTP_RULE_RES_CONT;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3764}
3765
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3766
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3767/* Executes the http-response rules <rules> for stream <s> and proxy <px>. It
3768 * returns one of 5 possible statuses: HTTP_RULE_RES_CONT, HTTP_RULE_RES_STOP,
3769 * HTTP_RULE_RES_DONE, HTTP_RULE_RES_YIELD, or HTTP_RULE_RES_BADREQ. If *CONT
3770 * is returned, the process can continue the evaluation of next rule list. If
3771 * *STOP or *DONE is returned, the process must stop the evaluation. If *BADREQ
3772 * is returned, it means the operation could not be processed and a server error
3773 * must be returned. It may set the TX_SVDENY on txn->flags if it encounters a
3774 * deny rule. If *YIELD is returned, the caller must call again the function
3775 * with the same context.
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3776 */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3777static enum rule_result
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3778http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s)
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3779{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3780 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3781 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3782 struct connection *cli_conn;
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]3783 struct act_rule *rule;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3784 struct hdr_ctx ctx;
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3785 int act_flags = 0;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3786
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3787 /* If "the current_rule_list" match the executed rule list, we are in
3788 * resume condition. If a resume is needed it is always in the action
3789 * and never in the ACL or converters. In this case, we initialise the
3790 * current rule, and go to the action execution point.
3791 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3792 if (s->current_rule) {
3793 rule = s->current_rule;
3794 s->current_rule = NULL;
3795 if (s->current_rule_list == rules)
3796 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3797 }
3798 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3799
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3800 list_for_each_entry(rule, rules, list) {
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3801
3802 /* check optional condition */
3803 if (rule->cond) {
3804 int ret;
3805
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3806 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]3807 ret = acl_pass(ret);
3808
3809 if (rule->cond->pol == ACL_COND_UNLESS)
3810 ret = !ret;
3811
3812 if (!ret) /* condition not matched */
3813 continue;
3814 }
3815
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3816 act_flags |= ACT_FLAG_FIRST;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3817resume_execution:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3818 switch (rule->action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3819 case ACT_ACTION_ALLOW:
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3820 return HTTP_RULE_RES_STOP; /* "allow" rules are OK */
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3821
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3822 case ACT_ACTION_DENY:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3823 txn->flags |= TX_SVDENY;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3824 return HTTP_RULE_RES_STOP;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3825
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3826 case ACT_HTTP_SET_NICE:
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3827 s->task->nice = rule->arg.nice;
3828 break;
3829
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3830 case ACT_HTTP_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3831 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3832 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]3833 break;
3834
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3835 case ACT_HTTP_SET_MARK:
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3836#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3837 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3838 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]3839#endif
3840 break;
3841
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3842 case ACT_HTTP_SET_LOGL:
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3843 s->logs.level = rule->arg.loglevel;
3844 break;
3845
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3846 case ACT_HTTP_REPLACE_HDR:
3847 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3848 if (http_transform_header(s, &txn->rsp, rule->arg.hdr_add.name,
3849 rule->arg.hdr_add.name_len,
3850 &rule->arg.hdr_add.fmt,
3851 &rule->arg.hdr_add.re, rule->action))
Christopher Fauletcdade942017-02-08 12:41:31 +0100[diff] [blame]3852 return HTTP_RULE_RES_BADREQ;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3853 break;
3854
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3855 case ACT_HTTP_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3856 ctx.idx = 0;
3857 /* remove all occurrences of the header */
3858 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3859 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3860 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3861 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3862 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3863
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3864 case ACT_HTTP_SET_HDR:
3865 case ACT_HTTP_ADD_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3866 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3867 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3868 trash.len = rule->arg.hdr_add.name_len;
3869 trash.str[trash.len++] = ':';
3870 trash.str[trash.len++] = ' ';
3871 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]3872
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3873 if (rule->action == ACT_HTTP_SET_HDR) {
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3874 /* remove all occurrences of the header */
3875 ctx.idx = 0;
3876 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3877 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3878 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3879 }
3880 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3881 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3882 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3883
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3884 case ACT_HTTP_DEL_ACL:
3885 case ACT_HTTP_DEL_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3886 struct pat_ref *ref;
3887 char *key;
3888 int len;
3889
3890 /* collect reference */
3891 ref = pat_ref_lookup(rule->arg.map.ref);
3892 if (!ref)
3893 continue;
3894
3895 /* collect key */
3896 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3897 key = trash.str;
3898 key[len] = '\0';
3899
3900 /* perform update */
3901 /* returned code: 1=ok, 0=ko */
3902 pat_ref_delete(ref, key);
3903
3904 break;
3905 }
3906
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3907 case ACT_HTTP_ADD_ACL: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3908 struct pat_ref *ref;
3909 char *key;
3910 struct chunk *trash_key;
3911 int len;
3912
3913 trash_key = get_trash_chunk();
3914
3915 /* collect reference */
3916 ref = pat_ref_lookup(rule->arg.map.ref);
3917 if (!ref)
3918 continue;
3919
3920 /* collect key */
3921 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3922 key = trash_key->str;
3923 key[len] = '\0';
3924
3925 /* perform update */
3926 /* check if the entry already exists */
3927 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3928 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3929
3930 break;
3931 }
3932
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3933 case ACT_HTTP_SET_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3934 struct pat_ref *ref;
3935 char *key, *value;
3936 struct chunk *trash_key, *trash_value;
3937 int len;
3938
3939 trash_key = get_trash_chunk();
3940 trash_value = get_trash_chunk();
3941
3942 /* collect reference */
3943 ref = pat_ref_lookup(rule->arg.map.ref);
3944 if (!ref)
3945 continue;
3946
3947 /* collect key */
3948 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3949 key = trash_key->str;
3950 key[len] = '\0';
3951
3952 /* collect value */
3953 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3954 value = trash_value->str;
3955 value[len] = '\0';
3956
3957 /* perform update */
3958 if (pat_ref_find_elt(ref, key) != NULL)
3959 /* update entry if it exists */
3960 pat_ref_set(ref, key, value, NULL);
3961 else
3962 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3963 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3964
3965 break;
3966 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3967
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3968 case ACT_HTTP_REDIR:
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3969 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3970 return HTTP_RULE_RES_BADREQ;
3971 return HTTP_RULE_RES_DONE;
3972
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3973 case ACT_ACTION_TRK_SC0 ... ACT_ACTION_TRK_SCMAX:
3974 /* Note: only the first valid tracking parameter of each
3975 * applies.
3976 */
3977
3978 if (stkctr_entry(&s->stkctr[http_trk_idx(rule->action)]) == NULL) {
3979 struct stktable *t;
3980 struct stksess *ts;
3981 struct stktable_key *key;
3982 void *ptr;
3983
3984 t = rule->arg.trk_ctr.table.t;
3985 key = stktable_fetch_key(t, s->be, sess, s, SMP_OPT_DIR_RES | SMP_OPT_FINAL, rule->arg.trk_ctr.expr, NULL);
3986
3987 if (key && (ts = stktable_get_entry(t, key))) {
3988 stream_track_stkctr(&s->stkctr[http_trk_idx(rule->action)], t, ts);
3989
3990 /* let's count a new HTTP request as it's the first time we do it */
3991 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT);
3992 if (ptr)
3993 stktable_data_cast(ptr, http_req_cnt)++;
3994
3995 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE);
3996 if (ptr)
3997 update_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
3998 t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1);
3999
4000 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_CONTENT);
4001 if (sess->fe != s->be)
4002 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_BACKEND);
4003
4004 /* When the client triggers a 4xx from the server, it's most often due
4005 * to a missing object or permission. These events should be tracked
4006 * because if they happen often, it may indicate a brute force or a
4007 * vulnerability scan. Normally this is done when receiving the response
4008 * but here we're tracking after this ought to have been done so we have
4009 * to do it on purpose.
4010 */
Willy Tarreau3146a4c2016-07-26 15:22:33 +0200[diff] [blame]4011 if ((unsigned)(txn->status - 400) < 100) {
4012 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_ERR_CNT);
4013 if (ptr)
4014 stktable_data_cast(ptr, http_err_cnt)++;
4015
4016 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_ERR_RATE);
4017 if (ptr)
4018 update_freq_ctr_period(&stktable_data_cast(ptr, http_err_rate),
4019 t->data_arg[STKTABLE_DT_HTTP_ERR_RATE].u, 1);
4020 }
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]4021 }
4022 }
4023 break;
4024
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]4025 case ACT_CUSTOM:
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]4026 if ((px->options & PR_O_ABRT_CLOSE) && (s->req.flags & (CF_SHUTR|CF_READ_NULL|CF_READ_ERROR)))
4027 act_flags |= ACT_FLAG_FINAL;
Willy Tarreau39458682015-09-27 10:33:15 +0200[diff] [blame]4028
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]4029 switch (rule->action_ptr(rule, px, s->sess, s, act_flags)) {
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]4030 case ACT_RET_ERR:
4031 case ACT_RET_CONT:
4032 break;
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]4033 case ACT_RET_STOP:
4034 return HTTP_RULE_RES_STOP;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]4035 case ACT_RET_YIELD:
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]4036 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4037 return HTTP_RULE_RES_YIELD;
4038 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]4039 break;
4040
Thierry FOURNIER22e49012015-08-05 19:13:48 +0200[diff] [blame]4041 /* other flags exists, but normaly, they never be matched. */
4042 default:
4043 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]4044 }
4045 }
4046
4047 /* we reached the end of the rules, nothing to report */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]4048 return HTTP_RULE_RES_CONT;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]4049}
4050
4051
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4052/* Perform an HTTP redirect based on the information in <rule>. The function
4053 * returns non-zero on success, or zero in case of a, irrecoverable error such
4054 * as too large a request to build a valid response.
4055 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4056static 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]4057{
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4058 struct http_msg *req = &txn->req;
4059 struct http_msg *res = &txn->rsp;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4060 const char *msg_fmt;
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4061 struct chunk *chunk;
4062 int ret = 0;
4063
4064 chunk = alloc_trash_chunk();
4065 if (!chunk)
4066 goto leave;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4067
4068 /* build redirect message */
4069 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]4070 case 308:
4071 msg_fmt = HTTP_308;
4072 break;
4073 case 307:
4074 msg_fmt = HTTP_307;
4075 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4076 case 303:
4077 msg_fmt = HTTP_303;
4078 break;
4079 case 301:
4080 msg_fmt = HTTP_301;
4081 break;
4082 case 302:
4083 default:
4084 msg_fmt = HTTP_302;
4085 break;
4086 }
4087
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4088 if (unlikely(!chunk_strcpy(chunk, msg_fmt)))
4089 goto leave;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4090
4091 switch(rule->type) {
4092 case REDIRECT_TYPE_SCHEME: {
4093 const char *path;
4094 const char *host;
4095 struct hdr_ctx ctx;
4096 int pathlen;
4097 int hostlen;
4098
4099 host = "";
4100 hostlen = 0;
4101 ctx.idx = 0;
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4102 if (http_find_header2("Host", 4, req->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4103 host = ctx.line + ctx.val;
4104 hostlen = ctx.vlen;
4105 }
4106
4107 path = http_get_path(txn);
4108 /* build message using path */
4109 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4110 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]4111 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
4112 int qs = 0;
4113 while (qs < pathlen) {
4114 if (path[qs] == '?') {
4115 pathlen = qs;
4116 break;
4117 }
4118 qs++;
4119 }
4120 }
4121 } else {
4122 path = "/";
4123 pathlen = 1;
4124 }
4125
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4126 if (rule->rdr_str) { /* this is an old "redirect" rule */
4127 /* check if we can add scheme + "://" + host + path */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4128 if (chunk->len + rule->rdr_len + 3 + hostlen + pathlen > chunk->size - 4)
4129 goto leave;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4130
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4131 /* add scheme */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4132 memcpy(chunk->str + chunk->len, rule->rdr_str, rule->rdr_len);
4133 chunk->len += rule->rdr_len;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4134 }
4135 else {
4136 /* add scheme with executing log format */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4137 chunk->len += build_logline(s, chunk->str + chunk->len, chunk->size - chunk->len, &rule->rdr_fmt);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4138
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4139 /* check if we can add scheme + "://" + host + path */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4140 if (chunk->len + 3 + hostlen + pathlen > chunk->size - 4)
4141 goto leave;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4142 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4143 /* add "://" */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4144 memcpy(chunk->str + chunk->len, "://", 3);
4145 chunk->len += 3;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4146
4147 /* add host */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4148 memcpy(chunk->str + chunk->len, host, hostlen);
4149 chunk->len += hostlen;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4150
4151 /* add path */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4152 memcpy(chunk->str + chunk->len, path, pathlen);
4153 chunk->len += pathlen;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4154
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4155 /* append a slash at the end of the location if needed and missing */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4156 if (chunk->len && chunk->str[chunk->len - 1] != '/' &&
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4157 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4158 if (chunk->len > chunk->size - 5)
4159 goto leave;
4160 chunk->str[chunk->len] = '/';
4161 chunk->len++;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4162 }
4163
4164 break;
4165 }
4166 case REDIRECT_TYPE_PREFIX: {
4167 const char *path;
4168 int pathlen;
4169
4170 path = http_get_path(txn);
4171 /* build message using path */
4172 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4173 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]4174 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
4175 int qs = 0;
4176 while (qs < pathlen) {
4177 if (path[qs] == '?') {
4178 pathlen = qs;
4179 break;
4180 }
4181 qs++;
4182 }
4183 }
4184 } else {
4185 path = "/";
4186 pathlen = 1;
4187 }
4188
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4189 if (rule->rdr_str) { /* this is an old "redirect" rule */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4190 if (chunk->len + rule->rdr_len + pathlen > chunk->size - 4)
4191 goto leave;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4192
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4193 /* add prefix. Note that if prefix == "/", we don't want to
4194 * add anything, otherwise it makes it hard for the user to
4195 * configure a self-redirection.
4196 */
4197 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4198 memcpy(chunk->str + chunk->len, rule->rdr_str, rule->rdr_len);
4199 chunk->len += rule->rdr_len;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4200 }
4201 }
4202 else {
4203 /* add prefix with executing log format */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4204 chunk->len += build_logline(s, chunk->str + chunk->len, chunk->size - chunk->len, &rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4205
4206 /* Check length */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4207 if (chunk->len + pathlen > chunk->size - 4)
4208 goto leave;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4209 }
4210
4211 /* add path */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4212 memcpy(chunk->str + chunk->len, path, pathlen);
4213 chunk->len += pathlen;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4214
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4215 /* append a slash at the end of the location if needed and missing */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4216 if (chunk->len && chunk->str[chunk->len - 1] != '/' &&
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4217 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4218 if (chunk->len > chunk->size - 5)
4219 goto leave;
4220 chunk->str[chunk->len] = '/';
4221 chunk->len++;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4222 }
4223
4224 break;
4225 }
4226 case REDIRECT_TYPE_LOCATION:
4227 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4228 if (rule->rdr_str) { /* this is an old "redirect" rule */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4229 if (chunk->len + rule->rdr_len > chunk->size - 4)
4230 goto leave;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4231
4232 /* add location */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4233 memcpy(chunk->str + chunk->len, rule->rdr_str, rule->rdr_len);
4234 chunk->len += rule->rdr_len;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4235 }
4236 else {
4237 /* add location with executing log format */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4238 chunk->len += build_logline(s, chunk->str + chunk->len, chunk->size - chunk->len, &rule->rdr_fmt);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4239
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4240 /* Check left length */
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4241 if (chunk->len > chunk->size - 4)
4242 goto leave;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4243 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4244 break;
4245 }
4246
4247 if (rule->cookie_len) {
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4248 memcpy(chunk->str + chunk->len, "\r\nSet-Cookie: ", 14);
4249 chunk->len += 14;
4250 memcpy(chunk->str + chunk->len, rule->cookie_str, rule->cookie_len);
4251 chunk->len += rule->cookie_len;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4252 }
4253
Willy Tarreau19b14122017-02-28 09:48:11 +0100[diff] [blame]4254 /* add end of headers and the keep-alive/close status. */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4255 txn->status = rule->code;
4256 /* let's log the request time */
4257 s->logs.tv_request = now;
4258
Willy Tarreau19b14122017-02-28 09:48:11 +0100[diff] [blame]4259 if ((req->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau2de8a502015-05-28 17:23:54 +0200[diff] [blame]4260 ((!(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]4261 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
4262 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
4263 /* keep-alive possible */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4264 if (!(req->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4265 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4266 memcpy(chunk->str + chunk->len, "\r\nProxy-Connection: keep-alive", 30);
4267 chunk->len += 30;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4268 } else {
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4269 memcpy(chunk->str + chunk->len, "\r\nConnection: keep-alive", 24);
4270 chunk->len += 24;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4271 }
4272 }
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4273 memcpy(chunk->str + chunk->len, "\r\n\r\n", 4);
4274 chunk->len += 4;
4275 FLT_STRM_CB(s, flt_http_reply(s, txn->status, chunk));
4276 bo_inject(res->chn, chunk->str, chunk->len);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4277 /* "eat" the request */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4278 bi_fast_delete(req->chn->buf, req->sov);
4279 req->next -= req->sov;
4280 req->sov = 0;
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4281 s->req.analysers = AN_REQ_HTTP_XFER_BODY | (s->req.analysers & AN_REQ_FLT_END);
4282 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]4283 req->msg_state = HTTP_MSG_CLOSED;
4284 res->msg_state = HTTP_MSG_DONE;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]4285 /* Trim any possible response */
4286 res->chn->buf->i = 0;
4287 res->next = res->sov = 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4288 } else {
4289 /* keep-alive not possible */
4290 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4291 memcpy(chunk->str + chunk->len, "\r\nProxy-Connection: close\r\n\r\n", 29);
4292 chunk->len += 29;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4293 } else {
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4294 memcpy(chunk->str + chunk->len, "\r\nConnection: close\r\n\r\n", 23);
4295 chunk->len += 23;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4296 }
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4297 http_reply_and_close(s, txn->status, chunk);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4298 req->chn->analysers &= AN_REQ_FLT_END;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4299 }
4300
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4301 if (!(s->flags & SF_ERR_MASK))
4302 s->flags |= SF_ERR_LOCAL;
4303 if (!(s->flags & SF_FINST_MASK))
4304 s->flags |= SF_FINST_R;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4305
Thierry FOURNIER0d945762017-01-28 07:39:53 +0100[diff] [blame]4306 ret = 1;
4307 leave:
4308 free_trash_chunk(chunk);
4309 return ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4310}
4311
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4312/* This stream analyser runs all HTTP request processing which is common to
4313 * frontends and backends, which means blocking ACLs, filters, connection-close,
4314 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4315 * 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]4316 * either needs more data or wants to immediately abort the request (eg: deny,
4317 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4318 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4319int 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]4320{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4321 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4322 struct http_txn *txn = s->txn;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4323 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4324 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]4325 struct cond_wordlist *wl;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4326 enum rule_result verdict;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4327 int deny_status = HTTP_ERR_403;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4328
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4329 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4330 /* we need more data */
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4331 goto return_prx_yield;
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4332 }
4333
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4334 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]4335 now_ms, __FUNCTION__,
4336 s,
4337 req,
4338 req->rex, req->wex,
4339 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4340 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4341 req->analysers);
4342
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4343 /* just in case we have some per-backend tracking */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4344 stream_inc_be_http_req_ctr(s);
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4345
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4346 /* evaluate http-request rules */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4347 if (!LIST_ISEMPTY(&px->http_req_rules)) {
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4348 verdict = http_req_get_intercept_rule(px, &px->http_req_rules, s, &deny_status);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]4349
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4350 switch (verdict) {
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4351 case HTTP_RULE_RES_YIELD: /* some data miss, call the function later. */
4352 goto return_prx_yield;
4353
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4354 case HTTP_RULE_RES_CONT:
4355 case HTTP_RULE_RES_STOP: /* nothing to do */
4356 break;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4357
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4358 case HTTP_RULE_RES_DENY: /* deny or tarpit */
4359 if (txn->flags & TX_CLTARPIT)
4360 goto tarpit;
4361 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4362
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4363 case HTTP_RULE_RES_ABRT: /* abort request, response already sent. Eg: auth */
4364 goto return_prx_cond;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4365
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4366 case HTTP_RULE_RES_DONE: /* OK, but terminate request processing (eg: redirect) */
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4367 goto done;
4368
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4369 case HTTP_RULE_RES_BADREQ: /* failed with a bad request */
4370 goto return_bad_req;
4371 }
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4372 }
4373
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4374 /* OK at this stage, we know that the request was accepted according to
4375 * the http-request rules, we can check for the stats. Note that the
4376 * URI is detected *before* the req* rules in order not to be affected
4377 * by a possible reqrep, while they are processed *after* so that a
4378 * reqdeny can still block them. This clearly needs to change in 1.6!
4379 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4380 if (stats_check_uri(&s->si[1], txn, px)) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4381 s->target = &http_stats_applet.obj_type;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4382 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target)))) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4383 txn->status = 500;
4384 s->logs.tv_request = now;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]4385 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]4386
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4387 if (!(s->flags & SF_ERR_MASK))
4388 s->flags |= SF_ERR_RESOURCE;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4389 goto return_prx_cond;
4390 }
4391
4392 /* parse the whole stats request and extract the relevant information */
4393 http_handle_stats(s, req);
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4394 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]4395 /* not all actions implemented: deny, allow, auth */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4396
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4397 if (verdict == HTTP_RULE_RES_DENY) /* stats http-request deny */
4398 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4399
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4400 if (verdict == HTTP_RULE_RES_ABRT) /* stats auth / stats http-request auth */
4401 goto return_prx_cond;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]4402 }
4403
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4404 /* evaluate the req* rules except reqadd */
4405 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]4406 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4407 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4408
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4409 if (txn->flags & TX_CLDENY)
4410 goto deny;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]4411
Jarno Huuskonen800d1762017-03-06 14:56:36 +0200[diff] [blame]4412 if (txn->flags & TX_CLTARPIT) {
4413 deny_status = HTTP_ERR_500;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4414 goto tarpit;
Jarno Huuskonen800d1762017-03-06 14:56:36 +0200[diff] [blame]4415 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4416 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4417
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4418 /* add request headers from the rule sets in the same order */
4419 list_for_each_entry(wl, &px->req_add, list) {
4420 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4421 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]4422 ret = acl_pass(ret);
4423 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
4424 ret = !ret;
4425 if (!ret)
4426 continue;
4427 }
4428
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4429 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4430 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]4431 }
4432
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4433
4434 /* Proceed with the stats now. */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]4435 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]4436 /* process the stats request now */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4437 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
4438 sess->fe->fe_counters.intercepted_req++;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4439
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4440 if (!(s->flags & SF_ERR_MASK)) // this is not really an error but it is
4441 s->flags |= SF_ERR_LOCAL; // to mark that it comes from the proxy
4442 if (!(s->flags & SF_FINST_MASK))
4443 s->flags |= SF_FINST_R;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4444
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4445 /* 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]4446 req->analysers &= (AN_REQ_HTTP_BODY | AN_REQ_FLT_HTTP_HDRS | AN_REQ_FLT_END);
4447 req->analysers &= ~AN_REQ_FLT_XFER_DATA;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4448 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4449 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4450 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4451
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4452 /* check whether we have some ACLs set to redirect this request */
4453 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4454 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4455 int ret;
4456
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4457 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]4458 ret = acl_pass(ret);
4459 if (rule->cond->pol == ACL_COND_UNLESS)
4460 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4461 if (!ret)
4462 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4463 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4464 if (!http_apply_redirect_rule(rule, s, txn))
4465 goto return_bad_req;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4466 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4467 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4468
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4469 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
4470 * If this happens, then the data will not come immediately, so we must
4471 * send all what we have without waiting. Note that due to the small gain
4472 * 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]4473 * 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]4474 * itself once used.
4475 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4476 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4477
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4478 done: /* done with this analyser, continue with next ones that the calling
4479 * points will have set, if any.
4480 */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4481 req->analyse_exp = TICK_ETERNITY;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4482 done_without_exp: /* done with this analyser, but dont reset the analyse_exp. */
4483 req->analysers &= ~an_bit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4484 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4485
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4486 tarpit:
4487 /* When a connection is tarpitted, we use the tarpit timeout,
4488 * which may be the same as the connect timeout if unspecified.
4489 * If unset, then set it to zero because we really want it to
4490 * eventually expire. We build the tarpit as an analyser.
4491 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4492 channel_erase(&s->req);
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4493
4494 /* wipe the request out so that we can drop the connection early
4495 * if the client closes first.
4496 */
4497 channel_dont_connect(req);
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]4498
4499 /* Allow cookie logging
4500 */
4501 if (s->be->cookie_name || sess->fe->capture_name)
4502 manage_client_side_cookies(s, req);
4503
Jarno Huuskonen800d1762017-03-06 14:56:36 +0200[diff] [blame]4504 txn->status = http_err_codes[deny_status];
4505
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4506 req->analysers &= AN_REQ_FLT_END; /* remove switching rules etc... */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4507 req->analysers |= AN_REQ_HTTP_TARPIT;
4508 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
4509 if (!req->analyse_exp)
4510 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4511 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4512 sess->fe->fe_counters.denied_req++;
4513 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4514 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4515 if (sess->listener->counters)
4516 sess->listener->counters->denied_req++;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4517 goto done_without_exp;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4518
4519 deny: /* this request was blocked (denied) */
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]4520
4521 /* Allow cookie logging
4522 */
4523 if (s->be->cookie_name || sess->fe->capture_name)
4524 manage_client_side_cookies(s, req);
4525
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4526 txn->flags |= TX_CLDENY;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4527 txn->status = http_err_codes[deny_status];
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4528 s->logs.tv_request = now;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]4529 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4530 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4531 sess->fe->fe_counters.denied_req++;
4532 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4533 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4534 if (sess->listener->counters)
4535 sess->listener->counters->denied_req++;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4536 goto return_prx_cond;
4537
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4538 return_bad_req:
4539 /* We centralize bad requests processing here */
4540 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
4541 /* we detected a parsing error. We want to archive this request
4542 * in the dedicated proxy area for later troubleshooting.
4543 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]4544 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]4545 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4546
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]4547 txn->req.err_state = txn->req.msg_state;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4548 txn->req.msg_state = HTTP_MSG_ERROR;
4549 txn->status = 400;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]4550 http_reply_and_close(s, txn->status, http_error_message(s));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4551
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4552 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4553 if (sess->listener->counters)
4554 sess->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4555
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4556 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4557 if (!(s->flags & SF_ERR_MASK))
4558 s->flags |= SF_ERR_PRXCOND;
4559 if (!(s->flags & SF_FINST_MASK))
4560 s->flags |= SF_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]4561
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4562 req->analysers &= AN_REQ_FLT_END;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4563 req->analyse_exp = TICK_ETERNITY;
4564 return 0;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4565
4566 return_prx_yield:
4567 channel_dont_connect(req);
4568 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4569}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4570
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4571/* This function performs all the processing enabled for the current request.
4572 * It returns 1 if the processing can continue on next analysers, or zero if it
4573 * needs more data, encounters an error, or wants to immediately abort the
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4574 * request. It relies on buffers flags, and updates s->req.analysers.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4575 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4576int http_process_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4577{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4578 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4579 struct http_txn *txn = s->txn;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4580 struct http_msg *msg = &txn->req;
Willy Tarreauee335e62015-04-21 18:15:13 +0200[diff] [blame]4581 struct connection *cli_conn = objt_conn(strm_sess(s)->origin);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4582
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4583 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4584 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4585 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4586 return 0;
4587 }
4588
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4589 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]4590 now_ms, __FUNCTION__,
4591 s,
4592 req,
4593 req->rex, req->wex,
4594 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4595 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4596 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4597
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4598 /*
4599 * Right now, we know that we have processed the entire headers
4600 * and that unwanted requests have been filtered out. We can do
4601 * whatever we want with the remaining request. Also, now we
4602 * may have separate values for ->fe, ->be.
4603 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4604
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4605 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4606 * If HTTP PROXY is set we simply get remote server address parsing
4607 * incoming request. Note that this requires that a connection is
4608 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4609 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4610 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SF_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4611 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4612 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4613
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]4614 /* Note that for now we don't reuse existing proxy connections */
Willy Tarreau973a5422015-08-05 21:47:23 +0200[diff] [blame]4615 if (unlikely((conn = si_alloc_conn(&s->si[1])) == NULL)) {
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]4616 txn->req.err_state = txn->req.msg_state;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4617 txn->req.msg_state = HTTP_MSG_ERROR;
4618 txn->status = 500;
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4619 req->analysers &= AN_REQ_FLT_END;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]4620 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4621
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4622 if (!(s->flags & SF_ERR_MASK))
4623 s->flags |= SF_ERR_RESOURCE;
4624 if (!(s->flags & SF_FINST_MASK))
4625 s->flags |= SF_FINST_R;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4626
4627 return 0;
4628 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4629
4630 path = http_get_path(txn);
4631 url2sa(req->buf->p + msg->sl.rq.u,
4632 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]4633 &conn->addr.to, NULL);
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4634 /* if the path was found, we have to remove everything between
4635 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
4636 * found, we need to replace from req->buf->p + msg->sl.rq.u for
4637 * u_l characters by a single "/".
4638 */
4639 if (path) {
4640 char *cur_ptr = req->buf->p;
4641 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4642 int delta;
4643
4644 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
4645 http_msg_move_end(&txn->req, delta);
4646 cur_end += delta;
4647 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4648 goto return_bad_req;
4649 }
4650 else {
4651 char *cur_ptr = req->buf->p;
4652 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4653 int delta;
4654
4655 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
4656 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
4657 http_msg_move_end(&txn->req, delta);
4658 cur_end += delta;
4659 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4660 goto return_bad_req;
4661 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4662 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4663
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4664 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4665 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4666 * Note that doing so might move headers in the request, but
4667 * the fields will stay coherent and the URI will not move.
4668 * This should only be performed in the backend.
4669 */
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]4670 if (s->be->cookie_name || sess->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4671 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]4672
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4673 /* add unique-id if "header-unique-id" is specified */
4674
Thierry Fournierf4011dd2016-03-29 17:23:51 +0200[diff] [blame]4675 if (!LIST_ISEMPTY(&sess->fe->format_unique_id) && !s->unique_id) {
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4676 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
4677 goto return_bad_req;
4678 s->unique_id[0] = '\0';
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4679 build_logline(s, s->unique_id, UNIQUEID_LEN, &sess->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4680 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4681
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4682 if (sess->fe->header_unique_id && s->unique_id) {
4683 chunk_printf(&trash, "%s: %s", sess->fe->header_unique_id, s->unique_id);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4684 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4685 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4686 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]4687 goto return_bad_req;
4688 }
4689
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4690 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4691 * 9: add X-Forwarded-For if either the frontend or the backend
4692 * asks for it.
4693 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4694 if ((sess->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4695 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4696 if (!((sess->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
4697 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : sess->fe->fwdfor_hdr_name,
4698 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]4699 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4700 /* The header is set to be added only if none is present
4701 * and we found it, so don't do anything.
4702 */
4703 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4704 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4705 /* Add an X-Forwarded-For header unless the source IP is
4706 * in the 'except' network range.
4707 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4708 if ((!sess->fe->except_mask.s_addr ||
4709 (((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr & sess->fe->except_mask.s_addr)
4710 != sess->fe->except_net.s_addr) &&
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4711 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4712 (((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]4713 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4714 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4715 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4716 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4717
4718 /* Note: we rely on the backend to get the header name to be used for
4719 * x-forwarded-for, because the header is really meant for the backends.
4720 * However, if the backend did not specify any option, we have to rely
4721 * on the frontend's header name.
4722 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4723 if (s->be->fwdfor_hdr_len) {
4724 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4725 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4726 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4727 len = sess->fe->fwdfor_hdr_len;
4728 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4729 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4730 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]4731
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4732 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]4733 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4734 }
4735 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4736 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4737 /* FIXME: for the sake of completeness, we should also support
4738 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4739 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4740 int len;
4741 char pn[INET6_ADDRSTRLEN];
4742 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4743 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4744 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4745
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4746 /* Note: we rely on the backend to get the header name to be used for
4747 * x-forwarded-for, because the header is really meant for the backends.
4748 * However, if the backend did not specify any option, we have to rely
4749 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4750 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4751 if (s->be->fwdfor_hdr_len) {
4752 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4753 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4754 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4755 len = sess->fe->fwdfor_hdr_len;
4756 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4757 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4758 len += snprintf(trash.str + len, trash.size - len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4759
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4760 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]4761 goto return_bad_req;
4762 }
4763 }
4764
4765 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4766 * 10: add X-Original-To if either the frontend or the backend
4767 * asks for it.
4768 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4769 if ((sess->fe->options | s->be->options) & PR_O_ORGTO) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4770
4771 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4772 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4773 /* Add an X-Original-To header unless the destination IP is
4774 * in the 'except' network range.
4775 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4776 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4777
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4778 if (cli_conn->addr.to.ss_family == AF_INET &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4779 ((!sess->fe->except_mask_to.s_addr ||
4780 (((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr.s_addr & sess->fe->except_mask_to.s_addr)
4781 != sess->fe->except_to.s_addr) &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4782 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4783 (((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]4784 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4785 int len;
4786 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4787 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4788
4789 /* Note: we rely on the backend to get the header name to be used for
4790 * x-original-to, because the header is really meant for the backends.
4791 * However, if the backend did not specify any option, we have to rely
4792 * on the frontend's header name.
4793 */
4794 if (s->be->orgto_hdr_len) {
4795 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4796 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4797 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4798 len = sess->fe->orgto_hdr_len;
4799 memcpy(trash.str, sess->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4800 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4801 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]4802
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4803 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]4804 goto return_bad_req;
4805 }
4806 }
4807 }
4808
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4809 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
4810 * If an "Upgrade" token is found, the header is left untouched in order not to have
4811 * to deal with some servers bugs : some of them fail an Upgrade if anything but
4812 * "Upgrade" is present in the Connection header.
4813 */
4814 if (!(txn->flags & TX_HDR_CONN_UPG) &&
4815 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4816 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4817 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4818 unsigned int want_flags = 0;
4819
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4820 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4821 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4822 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4823 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4824 !((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4825 want_flags |= TX_CON_CLO_SET;
4826 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4827 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4828 ((sess->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4829 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4830 ((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4831 want_flags |= TX_CON_KAL_SET;
4832 }
4833
4834 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4835 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4836 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4837
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4838
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4839 /* If we have no server assigned yet and we're balancing on url_param
4840 * with a POST request, we may be interested in checking the body for
4841 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4842 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4843 if (!(s->flags & (SF_ASSIGNED|SF_DIRECT)) &&
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4844 s->txn->meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4845 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4846 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4847 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4848 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4849
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4850 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4851 req->analysers &= ~AN_REQ_FLT_XFER_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4852 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4853#ifdef TCP_QUICKACK
4854 /* We expect some data from the client. Unless we know for sure
4855 * we already have a full request, we have to re-enable quick-ack
4856 * in case we previously disabled it, otherwise we might cause
4857 * the client to delay further data.
4858 */
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4859 if ((sess->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]4860 cli_conn && conn_ctrl_ready(cli_conn) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4861 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4862 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4863 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4864#endif
4865 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4866
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4867 /*************************************************************
4868 * OK, that's finished for the headers. We have done what we *
4869 * could. Let's switch to the DATA state. *
4870 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4871 req->analyse_exp = TICK_ETERNITY;
4872 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4873
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4874 /* if the server closes the connection, we want to immediately react
4875 * and close the socket to save packets and syscalls.
4876 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4877 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4878 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4879
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4880 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4881 /* OK let's go on with the BODY now */
4882 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4883
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4884 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4885 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4886 /* we detected a parsing error. We want to archive this request
4887 * in the dedicated proxy area for later troubleshooting.
4888 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]4889 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]4890 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4891
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]4892 txn->req.err_state = txn->req.msg_state;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4893 txn->req.msg_state = HTTP_MSG_ERROR;
4894 txn->status = 400;
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4895 req->analysers &= AN_REQ_FLT_END;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]4896 http_reply_and_close(s, txn->status, http_error_message(s));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4897
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4898 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4899 if (sess->listener->counters)
4900 sess->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +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_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4906 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4907}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4908
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4909/* This function is an analyser which processes the HTTP tarpit. It always
4910 * returns zero, at the beginning because it prevents any other processing
4911 * from occurring, and at the end because it terminates the request.
4912 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4913int http_process_tarpit(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4914{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4915 struct http_txn *txn = s->txn;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4916
4917 /* This connection is being tarpitted. The CLIENT side has
4918 * already set the connect expiration date to the right
4919 * timeout. We just have to check that the client is still
4920 * there and that the timeout has not expired.
4921 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4922 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4923 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4924 !tick_is_expired(req->analyse_exp, now_ms))
4925 return 0;
4926
4927 /* We will set the queue timer to the time spent, just for
4928 * logging purposes. We fake a 500 server error, so that the
4929 * attacker will not suspect his connection has been tarpitted.
4930 * It will not cause trouble to the logs because we can exclude
4931 * the tarpitted connections by filtering on the 'PT' status flags.
4932 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4933 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4934
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4935 if (!(req->flags & CF_READ_ERROR))
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]4936 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4937
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]4938 req->analysers &= AN_REQ_FLT_END;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4939 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4940
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4941 if (!(s->flags & SF_ERR_MASK))
4942 s->flags |= SF_ERR_PRXCOND;
4943 if (!(s->flags & SF_FINST_MASK))
4944 s->flags |= SF_FINST_T;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4945 return 0;
4946}
4947
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4948/* This function is an analyser which waits for the HTTP request body. It waits
4949 * for either the buffer to be full, or the full advertised contents to have
4950 * reached the buffer. It must only be called after the standard HTTP request
4951 * processing has occurred, because it expects the request to be parsed and will
4952 * look for the Expect header. It may send a 100-Continue interim response. It
4953 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
4954 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
4955 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4956 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4957int http_wait_for_request_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4958{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4959 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4960 struct http_txn *txn = s->txn;
4961 struct http_msg *msg = &s->txn->req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4962
4963 /* We have to parse the HTTP request body to find any required data.
4964 * "balance url_param check_post" should have been the only way to get
4965 * into this. We were brought here after HTTP header analysis, so all
4966 * related structures are ready.
4967 */
4968
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4969 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
4970 /* This is the first call */
4971 if (msg->msg_state < HTTP_MSG_BODY)
4972 goto missing_data;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4973
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4974 if (msg->msg_state < HTTP_MSG_100_SENT) {
4975 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4976 * send an HTTP/1.1 100 Continue intermediate response.
4977 */
4978 if (msg->flags & HTTP_MSGF_VER_11) {
4979 struct hdr_ctx ctx;
4980 ctx.idx = 0;
4981 /* Expect is allowed in 1.1, look for it */
4982 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
4983 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4984 bo_inject(&s->res, http_100_chunk.str, http_100_chunk.len);
Thierry FOURNIER / OZON.IO43ad11d2016-12-12 15:19:58 +0100[diff] [blame]4985 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4986 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4987 }
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4988 msg->msg_state = HTTP_MSG_100_SENT;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4989 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4990
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4991 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4992 * req->buf->p still points to the beginning of the message. We
4993 * must save the body in msg->next because it survives buffer
4994 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4995 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4996 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4997
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4998 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4999 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
5000 else
5001 msg->msg_state = HTTP_MSG_DATA;
5002 }
5003
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]5004 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
5005 /* We're in content-length mode, we just have to wait for enough data. */
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]5006 if (http_body_bytes(msg) < msg->body_len)
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]5007 goto missing_data;
5008
5009 /* OK we have everything we need now */
5010 goto http_end;
5011 }
5012
5013 /* OK here we're parsing a chunked-encoded message */
5014
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5015 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5016 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5017 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5018 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]5019 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5020 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]5021
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]5022 if (!ret)
5023 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5024 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5025 stream_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5026 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5027 }
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]5028 msg->next += ret;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5029 msg->msg_state = msg->chunk_len ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]5030 }
5031
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5032 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]5033 * We have the first data byte is in msg->sov + msg->sol. We're waiting
5034 * for at least a whole chunk or the whole content length bytes after
5035 * msg->sov + msg->sol.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]5036 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]5037 if (msg->msg_state == HTTP_MSG_TRAILERS)
5038 goto http_end;
5039
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]5040 if (http_body_bytes(msg) >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5041 goto http_end;
5042
5043 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]5044 /* we get here if we need to wait for more data. If the buffer is full,
5045 * we have the maximum we can expect.
5046 */
5047 if (buffer_full(req->buf, global.tune.maxrewrite))
5048 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]5049
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5050 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5051 txn->status = 408;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]5052 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5053
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5054 if (!(s->flags & SF_ERR_MASK))
5055 s->flags |= SF_ERR_CLITO;
5056 if (!(s->flags & SF_FINST_MASK))
5057 s->flags |= SF_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5058 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]5059 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5060
5061 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]5062 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]5063 /* Not enough data. We'll re-use the http-request
5064 * timeout here. Ideally, we should set the timeout
5065 * relative to the accept() date. We just set the
5066 * request timeout once at the beginning of the
5067 * request.
5068 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5069 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]5070 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]5071 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]5072 return 0;
5073 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5074
5075 http_end:
5076 /* The situation will not evolve, so let's give up on the analysis. */
5077 s->logs.tv_request = now; /* update the request timer to reflect full request */
5078 req->analysers &= ~an_bit;
5079 req->analyse_exp = TICK_ETERNITY;
5080 return 1;
5081
5082 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5083 txn->req.err_state = txn->req.msg_state;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5084 txn->req.msg_state = HTTP_MSG_ERROR;
5085 txn->status = 400;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]5086 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5087
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5088 if (!(s->flags & SF_ERR_MASK))
5089 s->flags |= SF_ERR_PRXCOND;
5090 if (!(s->flags & SF_FINST_MASK))
5091 s->flags |= SF_FINST_R;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5092
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5093 return_err_msg:
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5094 req->analysers &= AN_REQ_FLT_END;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5095 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5096 if (sess->listener->counters)
5097 sess->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]5098 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]5099}
5100
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5101/* send a server's name with an outgoing request over an established connection.
5102 * Note: this function is designed to be called once the request has been scheduled
5103 * for being forwarded. This is the reason why it rewinds the buffer before
5104 * proceeding.
5105 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]5106int 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]5107
5108 struct hdr_ctx ctx;
5109
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5110 char *hdr_name = be->server_id_hdr_name;
5111 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]5112 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5113 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5114 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5115
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]5116 ctx.idx = 0;
5117
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]5118 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5119 if (old_o) {
5120 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5121 b_rew(chn->buf, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]5122 txn->req.next += old_o;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5123 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5124 }
5125
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5126 old_i = chn->buf->i;
5127 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]5128 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5129 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5130 }
5131
5132 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5133 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5134 memcpy(hdr_val, hdr_name, hdr_name_len);
5135 hdr_val += hdr_name_len;
5136 *hdr_val++ = ':';
5137 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5138 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
5139 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]5140
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5141 if (old_o) {
5142 /* If this was a forwarded request, we must readjust the amount of
5143 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]5144 * variations. Note that the current state is >= HTTP_MSG_BODY,
5145 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5146 */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]5147 old_o += chn->buf->i - old_i;
5148 b_adv(chn->buf, old_o);
5149 txn->req.next -= old_o;
5150 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5151 }
5152
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5153 return 0;
5154}
5155
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5156/* Terminate current transaction and prepare a new one. This is very tricky
5157 * right now but it works.
5158 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5159void http_end_txn_clean_session(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5160{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5161 int prev_status = s->txn->status;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]5162 struct proxy *fe = strm_fe(s);
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]5163 struct proxy *be = s->be;
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5164 struct connection *srv_conn;
5165 struct server *srv;
Willy Tarreau449d74a2015-08-05 17:16:33 +0200[diff] [blame]5166 unsigned int prev_flags = s->txn->flags;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5167
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5168 /* FIXME: We need a more portable way of releasing a backend's and a
5169 * server's connections. We need a safer way to reinitialize buffer
5170 * flags. We also need a more accurate method for computing per-request
5171 * data.
5172 */
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5173 srv_conn = objt_conn(s->si[1].end);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5174
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5175 /* unless we're doing keep-alive, we want to quickly close the connection
5176 * to the server.
5177 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5178 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5179 !si_conn_ready(&s->si[1])) {
5180 s->si[1].flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
5181 si_shutr(&s->si[1]);
5182 si_shutw(&s->si[1]);
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5183 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5184
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5185 if (s->flags & SF_BE_ASSIGNED) {
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]5186 be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]5187 if (unlikely(s->srv_conn))
5188 sess_change_server(s, NULL);
5189 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5190
5191 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5192 stream_process_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5193
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5194 if (s->txn->status) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5195 int n;
5196
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5197 n = s->txn->status / 100;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5198 if (n < 1 || n > 5)
5199 n = 0;
5200
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5201 if (fe->mode == PR_MODE_HTTP) {
5202 fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5203 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5204 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]5205 (be->mode == PR_MODE_HTTP)) {
5206 be->be_counters.p.http.rsp[n]++;
5207 be->be_counters.p.http.cum_req++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5208 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5209 }
5210
5211 /* don't count other requests' data */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5212 s->logs.bytes_in -= s->req.buf->i;
5213 s->logs.bytes_out -= s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5214
5215 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5216 if (!LIST_ISEMPTY(&fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5217 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5218 (!(fe->options & PR_O_NULLNOLOG) || s->req.total)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5219 s->do_log(s);
5220 }
5221
Willy Tarreaud713bcc2014-06-25 15:36:04 +0200[diff] [blame]5222 /* stop tracking content-based counters */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5223 stream_stop_content_counters(s);
5224 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +0200[diff] [blame]5225
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5226 s->logs.accept_date = date; /* user-visible date for logging */
5227 s->logs.tv_accept = now; /* corrected date for internal use */
Thierry FOURNIER / OZON.IO4cac3592016-07-28 17:19:45 +0200[diff] [blame]5228 s->logs.t_handshake = 0; /* There are no handshake in keep alive connection. */
5229 s->logs.t_idle = -1;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5230 tv_zero(&s->logs.tv_request);
5231 s->logs.t_queue = -1;
5232 s->logs.t_connect = -1;
5233 s->logs.t_data = -1;
5234 s->logs.t_close = 0;
5235 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
5236 s->logs.srv_queue_size = 0; /* we will get this number soon */
5237
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5238 s->logs.bytes_in = s->req.total = s->req.buf->i;
5239 s->logs.bytes_out = s->res.total = s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5240
5241 if (s->pend_pos)
5242 pendconn_free(s->pend_pos);
5243
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5244 if (objt_server(s->target)) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5245 if (s->flags & SF_CURR_SESS) {
5246 s->flags &= ~SF_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5247 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5248 }
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]5249 if (may_dequeue_tasks(objt_server(s->target), be))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5250 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5251 }
5252
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5253 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5254
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5255 /* only release our endpoint if we don't intend to reuse the
5256 * connection.
5257 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5258 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5259 !si_conn_ready(&s->si[1])) {
5260 si_release_endpoint(&s->si[1]);
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5261 srv_conn = NULL;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5262 }
5263
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5264 s->si[1].state = s->si[1].prev_state = SI_ST_INI;
5265 s->si[1].err_type = SI_ET_NONE;
5266 s->si[1].conn_retries = 0; /* used for logging too */
5267 s->si[1].exp = TICK_ETERNITY;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5268 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]5269 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);
5270 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]5271 s->flags &= ~(SF_DIRECT|SF_ASSIGNED|SF_ADDR_SET|SF_BE_ASSIGNED|SF_FORCE_PRST|SF_IGNORE_PRST);
5272 s->flags &= ~(SF_CURR_SESS|SF_REDIRECTABLE|SF_SRV_REUSED);
5273 s->flags &= ~(SF_ERR_MASK|SF_FINST_MASK|SF_REDISP);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]5274
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5275 s->txn->meth = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5276 http_reset_txn(s);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5277 s->txn->flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5278
5279 if (prev_status == 401 || prev_status == 407) {
5280 /* In HTTP keep-alive mode, if we receive a 401, we still have
5281 * a chance of being able to send the visitor again to the same
5282 * server over the same connection. This is required by some
5283 * broken protocols such as NTLM, and anyway whenever there is
5284 * an opportunity for sending the challenge to the proper place,
5285 * it's better to do it (at least it helps with debugging).
5286 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5287 s->txn->flags |= TX_PREFER_LAST;
Willy Tarreaubd99d582015-09-02 10:40:43 +0200[diff] [blame]5288 if (srv_conn)
5289 srv_conn->flags |= CO_FL_PRIVATE;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5290 }
5291
Willy Tarreau53f96852016-02-02 18:50:47 +0100[diff] [blame]5292 /* Never ever allow to reuse a connection from a non-reuse backend */
5293 if (srv_conn && (be->options & PR_O_REUSE_MASK) == PR_O_REUSE_NEVR)
5294 srv_conn->flags |= CO_FL_PRIVATE;
5295
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5296 if (fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5297 s->si[1].flags |= SI_FL_INDEP_STR;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5298
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5299 if (fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5300 s->req.flags |= CF_NEVER_WAIT;
5301 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]5302 }
5303
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5304 /* if the request buffer is not empty, it means we're
5305 * about to process another request, so send pending
5306 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5307 * Just don't do this if the buffer is close to be full,
5308 * because the request will wait for it to flush a little
5309 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5310 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5311 if (s->req.buf->i) {
5312 if (s->res.buf->o &&
5313 !buffer_full(s->res.buf, global.tune.maxrewrite) &&
5314 bi_end(s->res.buf) <= s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)
5315 s->res.flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5316 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5317
Willy Tarreau714ea782015-11-25 20:11:11 +0100[diff] [blame]5318 /* we're removing the analysers, we MUST re-enable events detection.
5319 * We don't enable close on the response channel since it's either
5320 * already closed, or in keep-alive with an idle connection handler.
5321 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5322 channel_auto_read(&s->req);
5323 channel_auto_close(&s->req);
5324 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5325
Willy Tarreau1c59bd52015-11-02 20:20:11 +0100[diff] [blame]5326 /* we're in keep-alive with an idle connection, monitor it if not already done */
5327 if (srv_conn && LIST_ISEMPTY(&srv_conn->list)) {
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5328 srv = objt_server(srv_conn->target);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5329 if (!srv)
5330 si_idle_conn(&s->si[1], NULL);
Willy Tarreau53f96852016-02-02 18:50:47 +0100[diff] [blame]5331 else if (srv_conn->flags & CO_FL_PRIVATE)
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5332 si_idle_conn(&s->si[1], &srv->priv_conns);
Willy Tarreau449d74a2015-08-05 17:16:33 +0200[diff] [blame]5333 else if (prev_flags & TX_NOT_FIRST)
5334 /* note: we check the request, not the connection, but
5335 * this is valid for strategies SAFE and AGGR, and in
5336 * case of ALWS, we don't care anyway.
5337 */
5338 si_idle_conn(&s->si[1], &srv->safe_conns);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5339 else
5340 si_idle_conn(&s->si[1], &srv->idle_conns);
Willy Tarreau4320eaa2015-08-05 11:08:30 +0200[diff] [blame]5341 }
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]5342
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5343 if (HAS_FILTERS(s)) {
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5344 s->req.analysers &= AN_REQ_FLT_END;
5345 s->res.analysers &= AN_RES_FLT_END;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5346 }
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5347 else {
5348 s->req.analysers = strm_li(s) ? strm_li(s)->analysers : 0;
5349 s->res.analysers = 0;
5350 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5351}
5352
5353
5354/* This function updates the request state machine according to the response
5355 * state machine and buffer flags. It returns 1 if it changes anything (flag
5356 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5357 * it is only used to find when a request/response couple is complete. Both
5358 * this function and its equivalent should loop until both return zero. It
5359 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5360 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5361int http_sync_req_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5362{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5363 struct channel *chn = &s->req;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5364 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5365 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5366 unsigned int old_state = txn->req.msg_state;
5367
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5368 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
5369 return 0;
5370
5371 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5372 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5373 * We can shut the read side unless we want to abort_on_close,
5374 * or we have a POST request. The issue with POST requests is
5375 * that some browsers still send a CRLF after the request, and
5376 * this CRLF must be read so that it does not remain in the kernel
5377 * buffers, otherwise a close could cause an RST on some systems
5378 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5379 * Note that if we're using keep-alive on the client side, we'd
5380 * rather poll now and keep the polling enabled for the whole
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5381 * stream's life than enabling/disabling it between each
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5382 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5383 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5384 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5385 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5386 !(s->be->options & PR_O_ABRT_CLOSE) &&
5387 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5388 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5389
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5390 /* if the server closes the connection, we want to immediately react
5391 * and close the socket to save packets and syscalls.
5392 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5393 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5394
Willy Tarreau7f876a12015-11-18 11:59:55 +0100[diff] [blame]5395 /* In any case we've finished parsing the request so we must
5396 * disable Nagle when sending data because 1) we're not going
5397 * to shut this side, and 2) the server is waiting for us to
5398 * send pending data.
5399 */
5400 chn->flags |= CF_NEVER_WAIT;
5401
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5402 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
5403 goto wait_other_side;
5404
5405 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
5406 /* The server has not finished to respond, so we
5407 * don't want to move in order not to upset it.
5408 */
5409 goto wait_other_side;
5410 }
5411
5412 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
5413 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5414 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5415 txn->req.msg_state = HTTP_MSG_TUNNEL;
5416 goto wait_other_side;
5417 }
5418
5419 /* When we get here, it means that both the request and the
5420 * response have finished receiving. Depending on the connection
5421 * mode, we'll have to wait for the last bytes to leave in either
5422 * direction, and sometimes for a close to be effective.
5423 */
5424
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5425 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5426 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5427 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
5428 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5429 }
5430 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5431 /* Option forceclose is set, or either side wants to close,
5432 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5433 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5434 * once both states are CLOSED.
5435 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5436 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5437 channel_shutr_now(chn);
5438 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5439 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5440 }
5441 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5442 /* The last possible modes are keep-alive and tunnel. Tunnel mode
5443 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5444 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5445 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
5446 channel_auto_read(chn);
5447 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5448 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5449 }
5450
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5451 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5452 /* if we've just closed an output, let's switch */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5453 s->si[1].flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5454
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5455 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5456 txn->req.msg_state = HTTP_MSG_CLOSING;
5457 goto http_msg_closing;
5458 }
5459 else {
5460 txn->req.msg_state = HTTP_MSG_CLOSED;
5461 goto http_msg_closed;
5462 }
5463 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5464 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5465 }
5466
5467 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
5468 http_msg_closing:
5469 /* nothing else to forward, just waiting for the output buffer
5470 * to be empty and for the shutw_now to take effect.
5471 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5472 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5473 txn->req.msg_state = HTTP_MSG_CLOSED;
5474 goto http_msg_closed;
5475 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5476 else if (chn->flags & CF_SHUTW) {
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5477 txn->req.err_state = txn->req.msg_state;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5478 txn->req.msg_state = HTTP_MSG_ERROR;
5479 goto wait_other_side;
5480 }
5481 }
5482
5483 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
5484 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5485 /* see above in MSG_DONE why we only do this in these states */
5486 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5487 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5488 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]5489 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5490 goto wait_other_side;
5491 }
5492
5493 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5494 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5495}
5496
5497
5498/* This function updates the response state machine according to the request
5499 * state machine and buffer flags. It returns 1 if it changes anything (flag
5500 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5501 * it is only used to find when a request/response couple is complete. Both
5502 * this function and its equivalent should loop until both return zero. It
5503 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5504 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5505int http_sync_res_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5506{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5507 struct channel *chn = &s->res;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5508 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5509 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5510 unsigned int old_state = txn->rsp.msg_state;
5511
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5512 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
5513 return 0;
5514
5515 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
5516 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5517 * still monitor the server connection for a possible close
5518 * while the request is being uploaded, so we don't disable
5519 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5520 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5521 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5522
5523 if (txn->req.msg_state == HTTP_MSG_ERROR)
5524 goto wait_other_side;
5525
5526 if (txn->req.msg_state < HTTP_MSG_DONE) {
5527 /* The client seems to still be sending data, probably
5528 * because we got an error response during an upload.
5529 * We have the choice of either breaking the connection
5530 * or letting it pass through. Let's do the later.
5531 */
5532 goto wait_other_side;
5533 }
5534
5535 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
5536 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5537 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5538 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5539 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5540 goto wait_other_side;
5541 }
5542
5543 /* When we get here, it means that both the request and the
5544 * response have finished receiving. Depending on the connection
5545 * mode, we'll have to wait for the last bytes to leave in either
5546 * direction, and sometimes for a close to be effective.
5547 */
5548
5549 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5550 /* Server-close mode : shut read and wait for the request
5551 * side to close its output buffer. The caller will detect
5552 * when we're in DONE and the other is in CLOSED and will
5553 * catch that for the final cleanup.
5554 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5555 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
5556 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5557 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5558 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5559 /* Option forceclose is set, or either side wants to close,
5560 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5561 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5562 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5563 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5564 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5565 channel_shutr_now(chn);
5566 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5567 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5568 }
5569 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5570 /* The last possible modes are keep-alive and tunnel. Tunnel will
5571 * need to forward remaining data. Keep-alive will need to monitor
5572 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5573 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5574 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5575 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5576 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
5577 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5578 }
5579
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5580 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5581 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5582 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5583 txn->rsp.msg_state = HTTP_MSG_CLOSING;
5584 goto http_msg_closing;
5585 }
5586 else {
5587 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5588 goto http_msg_closed;
5589 }
5590 }
5591 goto wait_other_side;
5592 }
5593
5594 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
5595 http_msg_closing:
5596 /* nothing else to forward, just waiting for the output buffer
5597 * to be empty and for the shutw_now to take effect.
5598 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5599 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5600 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5601 goto http_msg_closed;
5602 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5603 else if (chn->flags & CF_SHUTW) {
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5604 txn->req.err_state = txn->req.msg_state;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5605 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5606 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5607 if (objt_server(s->target))
5608 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5609 goto wait_other_side;
5610 }
5611 }
5612
5613 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
5614 http_msg_closed:
5615 /* drop any pending data */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5616 channel_truncate(chn);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5617 channel_auto_close(chn);
5618 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5619 goto wait_other_side;
5620 }
5621
5622 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5623 /* We force the response to leave immediately if we're waiting for the
5624 * other side, since there is no pending shutdown to push it out.
5625 */
5626 if (!channel_is_empty(chn))
5627 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5628 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5629}
5630
5631
5632/* Resync the request and response state machines. Return 1 if either state
5633 * changes.
5634 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5635int http_resync_states(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5636{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5637 struct http_txn *txn = s->txn;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5638 int old_req_state = txn->req.msg_state;
5639 int old_res_state = txn->rsp.msg_state;
5640
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5641 http_sync_req_state(s);
5642 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5643 if (!http_sync_res_state(s))
5644 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5645 if (!http_sync_req_state(s))
5646 break;
5647 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]5648
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5649 /* OK, both state machines agree on a compatible state.
5650 * There are a few cases we're interested in :
5651 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
5652 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
5653 * directions, so let's simply disable both analysers.
5654 * - HTTP_MSG_CLOSED on the response only means we must abort the
5655 * request.
5656 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
5657 * with server-close mode means we've completed one request and we
5658 * must re-initialize the server connection.
5659 */
5660
5661 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
5662 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
5663 (txn->req.msg_state == HTTP_MSG_CLOSED &&
5664 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5665 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5666 channel_auto_close(&s->req);
5667 channel_auto_read(&s->req);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5668 s->res.analysers &= AN_RES_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5669 channel_auto_close(&s->res);
5670 channel_auto_read(&s->res);
Christopher Faulet6962f4e2016-11-28 14:21:27 +0100[diff] [blame]5671 if (txn->req.msg_state == HTTP_MSG_TUNNEL && HAS_REQ_DATA_FILTERS(s))
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5672 s->req.analysers |= AN_REQ_FLT_XFER_DATA;
Christopher Faulet6962f4e2016-11-28 14:21:27 +0100[diff] [blame]5673 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL && HAS_RSP_DATA_FILTERS(s))
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5674 s->res.analysers |= AN_RES_FLT_XFER_DATA;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5675 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5676 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5677 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->res.flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]5678 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5679 txn->req.msg_state == HTTP_MSG_ERROR) {
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5680 s->res.analysers &= AN_RES_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5681 channel_auto_close(&s->res);
5682 channel_auto_read(&s->res);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5683 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5684 channel_abort(&s->req);
5685 channel_auto_close(&s->req);
5686 channel_auto_read(&s->req);
5687 channel_truncate(&s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5688 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5689 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
5690 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5691 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5692 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
5693 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
5694 /* server-close/keep-alive: terminate this transaction,
5695 * possibly killing the server connection and reinitialize
Willy Tarreau3de5bd62016-05-02 16:07:07 +0200[diff] [blame]5696 * a fresh-new transaction, but only once we're sure there's
5697 * enough room in the request and response buffer to process
5698 * another request. The request buffer must not hold any
5699 * pending output data and the request buffer must not have
5700 * output data occupying the reserve.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5701 */
Willy Tarreau3de5bd62016-05-02 16:07:07 +0200[diff] [blame]5702 if (s->req.buf->o)
5703 s->req.flags |= CF_WAKE_WRITE;
5704 else if (channel_congested(&s->res))
5705 s->res.flags |= CF_WAKE_WRITE;
5706 else
5707 http_end_txn_clean_session(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5708 }
5709
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5710 return txn->req.msg_state != old_req_state ||
5711 txn->rsp.msg_state != old_res_state;
5712}
5713
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5714/* This function is an analyser which forwards request body (including chunk
5715 * sizes if any). It is called as soon as we must forward, even if we forward
5716 * zero byte. The only situation where it must not be called is when we're in
5717 * tunnel mode and we want to forward till the close. It's used both to forward
5718 * remaining data and to resync after end of body. It expects the msg_state to
5719 * 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]5720 * 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]5721 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5722 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5723 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5724int http_request_forward_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5725{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5726 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5727 struct http_txn *txn = s->txn;
5728 struct http_msg *msg = &s->txn->req;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5729 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5730
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5731 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5732 return 0;
5733
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5734 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]5735 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5736 /* Output closed while we were sending data. We must abort and
5737 * wake the other side up.
5738 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5739 msg->err_state = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5740 msg->msg_state = HTTP_MSG_ERROR;
5741 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5742 return 1;
5743 }
5744
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5745 /* Note that we don't have to send 100-continue back because we don't
5746 * need the data to complete our job, and it's up to the server to
5747 * decide whether to return 100, 417 or anything else in return of
5748 * an "Expect: 100-continue" header.
5749 */
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5750 if (msg->msg_state == HTTP_MSG_BODY) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5751 msg->msg_state = ((msg->flags & HTTP_MSGF_TE_CHNK)
5752 ? HTTP_MSG_CHUNK_SIZE
5753 : HTTP_MSG_DATA);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5754
5755 /* TODO/filters: when http-buffer-request option is set or if a
5756 * rule on url_param exists, the first chunk size could be
5757 * already parsed. In that case, msg->next is after the chunk
5758 * size (including the CRLF after the size). So this case should
5759 * be handled to */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5760 }
5761
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5762 /* Some post-connect processing might want us to refrain from starting to
5763 * forward data. Currently, the only reason for this is "balance url_param"
5764 * whichs need to parse/process the request after we've enabled forwarding.
5765 */
5766 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5767 if (!(s->res.flags & CF_READ_ATTACHED)) {
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5768 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +0200[diff] [blame]5769 req->flags |= CF_WAKE_CONNECT;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5770 goto missing_data_or_waiting;
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5771 }
5772 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5773 }
5774
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5775 /* in most states, we should abort in case of early close */
5776 channel_auto_close(req);
5777
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5778 if (req->to_forward) {
5779 /* We can't process the buffer's contents yet */
5780 req->flags |= CF_WAKE_WRITE;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5781 goto missing_data_or_waiting;
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5782 }
5783
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5784 if (msg->msg_state < HTTP_MSG_DONE) {
5785 ret = ((msg->flags & HTTP_MSGF_TE_CHNK)
5786 ? http_msg_forward_chunked_body(s, msg)
5787 : http_msg_forward_body(s, msg));
5788 if (!ret)
5789 goto missing_data_or_waiting;
5790 if (ret < 0)
5791 goto return_bad_req;
5792 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5793
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5794 /* other states, DONE...TUNNEL */
5795 /* we don't want to forward closes on DONE except in tunnel mode. */
5796 if ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5797 channel_dont_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5798
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5799 if (http_resync_states(s)) {
5800 /* some state changes occurred, maybe the analyser
5801 * was disabled too. */
5802 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5803 if (req->flags & CF_SHUTW) {
5804 /* request errors are most likely due to the
5805 * server aborting the transfer. */
5806 goto aborted_xfer;
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5807 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5808 if (msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5809 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]5810 goto return_bad_req;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5811 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5812 return 1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5813 }
5814
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5815 /* If "option abortonclose" is set on the backend, we want to monitor
5816 * the client's connection and forward any shutdown notification to the
5817 * server, which will decide whether to close or to go on processing the
5818 * request. We only do that in tunnel mode, and not in other modes since
5819 * it can be abused to exhaust source ports. */
5820 if (s->be->options & PR_O_ABRT_CLOSE) {
5821 channel_auto_read(req);
5822 if ((req->flags & (CF_SHUTR|CF_READ_NULL)) &&
5823 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN))
5824 s->si[1].flags |= SI_FL_NOLINGER;
5825 channel_auto_close(req);
5826 }
5827 else if (s->txn->meth == HTTP_METH_POST) {
5828 /* POST requests may require to read extra CRLF sent by broken
5829 * browsers and which could cause an RST to be sent upon close
5830 * on some systems (eg: Linux). */
5831 channel_auto_read(req);
5832 }
5833 return 0;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5834
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5835 missing_data_or_waiting:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5836 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5837 if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5838 if (!(s->flags & SF_ERR_MASK))
5839 s->flags |= SF_ERR_CLICL;
5840 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5841 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5842 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5843 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5844 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5845 }
5846
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5847 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5848 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5849 if (objt_server(s->target))
5850 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5851
5852 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5853 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5854
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5855 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5856 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5857 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5858
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5859 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5860 * 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]5861 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5862 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5863 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5864
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5865 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5866 * 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]5867 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5868 * modes are already handled by the stream sock layer. We must not do
5869 * this in content-length mode because it could present the MSG_MORE
5870 * flag with the last block of forwarded data, which would cause an
5871 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5872 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5873 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5874 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5875
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5876 return 0;
5877
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5878 return_bad_req: /* let's centralize all bad requests */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5879 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5880 if (sess->listener->counters)
5881 sess->listener->counters->failed_req++;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5882
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5883 return_bad_req_stats_ok:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5884 txn->req.err_state = txn->req.msg_state;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5885 txn->req.msg_state = HTTP_MSG_ERROR;
5886 if (txn->status) {
5887 /* Note: we don't send any error if some data were already sent */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5888 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5889 } else {
5890 txn->status = 400;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]5891 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5892 }
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5893 req->analysers &= AN_REQ_FLT_END;
5894 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]5895
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5896 if (!(s->flags & SF_ERR_MASK))
5897 s->flags |= SF_ERR_PRXCOND;
5898 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5899 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5900 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5901 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5902 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5903 }
5904 return 0;
5905
5906 aborted_xfer:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]5907 txn->req.err_state = txn->req.msg_state;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5908 txn->req.msg_state = HTTP_MSG_ERROR;
5909 if (txn->status) {
5910 /* Note: we don't send any error if some data were already sent */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5911 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5912 } else {
5913 txn->status = 502;
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]5914 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5915 }
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]5916 req->analysers &= AN_REQ_FLT_END;
5917 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]5918
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5919 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5920 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5921 if (objt_server(s->target))
5922 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5923
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5924 if (!(s->flags & SF_ERR_MASK))
5925 s->flags |= SF_ERR_SRVCL;
5926 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5927 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5928 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5929 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5930 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5931 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5932 return 0;
5933}
5934
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5935/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5936 * processing can continue on next analysers, or zero if it either needs more
5937 * data or wants to immediately abort the response (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5938 * 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]5939 * when it has nothing left to do, and may remove any analyser when it wants to
5940 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5941 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5942int http_wait_for_response(struct stream *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5943{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5944 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5945 struct http_txn *txn = s->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5946 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5947 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5948 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5949 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5950 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5951
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5952 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]5953 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5954 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5955 rep,
5956 rep->rex, rep->wex,
5957 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5958 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5959 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5960
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5961 /*
5962 * Now parse the partial (or complete) lines.
5963 * We will check the response syntax, and also join multi-line
5964 * headers. An index of all the lines will be elaborated while
5965 * parsing.
5966 *
5967 * For the parsing, we use a 28 states FSM.
5968 *
5969 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5970 * rep->buf->p = beginning of response
5971 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5972 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5973 * msg->eol = end of current header or line (LF or CRLF)
5974 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5975 */
5976
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5977 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5978 /* There's a protected area at the end of the buffer for rewriting
5979 * purposes. We don't want to start to parse the request if the
5980 * protected area is affected, because we may have to move processed
5981 * data later, which is much more complicated.
5982 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5983 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]5984 if (unlikely(!channel_is_rewritable(rep))) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5985 /* some data has still not left the buffer, wake us once that's done */
5986 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5987 goto abort_response;
5988 channel_dont_close(rep);
5989 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5990 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5991 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5992 }
5993
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5994 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5995 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5996 buffer_slow_realign(rep->buf);
5997
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5998 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5999 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]6000 }
6001
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6002 /* 1: we might have to print this header in debug mode */
6003 if (unlikely((global.mode & MODE_DEBUG) &&
6004 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]6005 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6006 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6007
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6008 sol = rep->buf->p;
6009 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6010 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6011
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6012 sol += hdr_idx_first_pos(&txn->hdr_idx);
6013 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6014
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6015 while (cur_idx) {
6016 eol = sol + txn->hdr_idx.v[cur_idx].len;
6017 debug_hdr("srvhdr", s, sol, eol);
6018 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
6019 cur_idx = txn->hdr_idx.v[cur_idx].next;
6020 }
6021 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6022
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6023 /*
6024 * Now we quickly check if we have found a full valid response.
6025 * If not so, we check the FD and buffer states before leaving.
6026 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]6027 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6028 * responses are checked first.
6029 *
6030 * Depending on whether the client is still there or not, we
6031 * may send an error response back or not. Note that normally
6032 * we should only check for HTTP status there, and check I/O
6033 * errors somewhere else.
6034 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6035
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]6036 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6037 /* Invalid response */
6038 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
6039 /* we detected a parsing error. We want to archive this response
6040 * in the dedicated proxy area for later troubleshooting.
6041 */
6042 hdr_response_bad:
6043 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]6044 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]6045
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6046 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6047 if (objt_server(s->target)) {
6048 objt_server(s->target)->counters.failed_resp++;
6049 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6050 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]6051 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6052 channel_auto_close(rep);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6053 rep->analysers &= AN_RES_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6054 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6055 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6056 channel_truncate(rep);
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]6057 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6058
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6059 if (!(s->flags & SF_ERR_MASK))
6060 s->flags |= SF_ERR_PRXCOND;
6061 if (!(s->flags & SF_FINST_MASK))
6062 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6063
6064 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6065 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6066
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6067 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6068 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]6069 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6070 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6071 goto hdr_response_bad;
6072 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6073
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6074 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6075 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6076 if (msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]6077 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]6078 else if (txn->flags & TX_NOT_FIRST)
6079 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]6080
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6081 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6082 if (objt_server(s->target)) {
6083 objt_server(s->target)->counters.failed_resp++;
6084 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6085 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]6086
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6087 channel_auto_close(rep);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6088 rep->analysers &= AN_RES_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6089 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6090 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6091 channel_truncate(rep);
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]6092 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]6093
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6094 if (!(s->flags & SF_ERR_MASK))
6095 s->flags |= SF_ERR_SRVCL;
6096 if (!(s->flags & SF_FINST_MASK))
6097 s->flags |= SF_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]6098 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6099 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6100
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +0200[diff] [blame]6101 /* read timeout : return a 504 to the client. */
6102 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6103 if (msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]6104 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]6105
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6106 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6107 if (objt_server(s->target)) {
6108 objt_server(s->target)->counters.failed_resp++;
6109 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6110 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6111
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6112 channel_auto_close(rep);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6113 rep->analysers &= AN_RES_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6114 txn->status = 504;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6115 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6116 channel_truncate(rep);
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]6117 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]6118
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6119 if (!(s->flags & SF_ERR_MASK))
6120 s->flags |= SF_ERR_SRVTO;
6121 if (!(s->flags & SF_FINST_MASK))
6122 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6123 return 0;
6124 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]6125
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6126 /* client abort with an abortonclose */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6127 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]6128 sess->fe->fe_counters.cli_aborts++;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6129 s->be->be_counters.cli_aborts++;
6130 if (objt_server(s->target))
6131 objt_server(s->target)->counters.cli_aborts++;
6132
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6133 rep->analysers &= AN_RES_FLT_END;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6134 channel_auto_close(rep);
6135
6136 txn->status = 400;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6137 channel_truncate(rep);
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]6138 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6139
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6140 if (!(s->flags & SF_ERR_MASK))
6141 s->flags |= SF_ERR_CLICL;
6142 if (!(s->flags & SF_FINST_MASK))
6143 s->flags |= SF_FINST_H;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6144
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6145 /* process_stream() will take care of the error */
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6146 return 0;
6147 }
6148
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]6149 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6150 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]6151 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]6152 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]6153 else if (txn->flags & TX_NOT_FIRST)
6154 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6155
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6156 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6157 if (objt_server(s->target)) {
6158 objt_server(s->target)->counters.failed_resp++;
6159 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6160 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6161
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6162 channel_auto_close(rep);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6163 rep->analysers &= AN_RES_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6164 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6165 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6166 channel_truncate(rep);
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]6167 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6168
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6169 if (!(s->flags & SF_ERR_MASK))
6170 s->flags |= SF_ERR_SRVCL;
6171 if (!(s->flags & SF_FINST_MASK))
6172 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6173 return 0;
6174 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]6175
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6176 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6177 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6178 if (msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]6179 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]6180 else if (txn->flags & TX_NOT_FIRST)
6181 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]6182
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6183 s->be->be_counters.failed_resp++;
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6184 rep->analysers &= AN_RES_FLT_END;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6185 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6186
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6187 if (!(s->flags & SF_ERR_MASK))
6188 s->flags |= SF_ERR_CLICL;
6189 if (!(s->flags & SF_FINST_MASK))
6190 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6191
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6192 /* process_stream() will take care of the error */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6193 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6194 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6195
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6196 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]6197 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6198 return 0;
6199 }
6200
6201 /* More interesting part now : we know that we have a complete
6202 * response which at least looks like HTTP. We have an indicator
6203 * of each header's length, so we can parse them quickly.
6204 */
6205
6206 if (unlikely(msg->err_pos >= 0))
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]6207 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]6208
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6209 /*
6210 * 1: get the status code
6211 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6212 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6213 if (n < 1 || n > 5)
6214 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6215 /* when the client triggers a 4xx from the server, it's most often due
6216 * to a missing object or permission. These events should be tracked
6217 * because if they happen often, it may indicate a brute force or a
6218 * vulnerability scan.
6219 */
6220 if (n == 4)
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6221 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6222
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6223 if (objt_server(s->target))
6224 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6225
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]6226 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
6227 * exactly one digit "." one digit. This check may be disabled using
6228 * option accept-invalid-http-response.
6229 */
6230 if (!(s->be->options2 & PR_O2_RSPBUG_OK)) {
6231 if (msg->sl.st.v_l != 8) {
6232 msg->err_pos = 0;
6233 goto hdr_response_bad;
6234 }
6235
6236 if (rep->buf->p[4] != '/' ||
6237 !isdigit((unsigned char)rep->buf->p[5]) ||
6238 rep->buf->p[6] != '.' ||
6239 !isdigit((unsigned char)rep->buf->p[7])) {
6240 msg->err_pos = 4;
6241 goto hdr_response_bad;
6242 }
6243 }
6244
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6245 /* check if the response is HTTP/1.1 or above */
6246 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6247 ((rep->buf->p[5] > '1') ||
6248 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6249 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6250
6251 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]6252 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]6253
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6254 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6255 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6256
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6257 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]6258
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]6259 /* Adjust server's health based on status code. Note: status codes 501
6260 * and 505 are triggered on demand by client request, so we must not
6261 * count them as server failures.
6262 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6263 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6264 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6265 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6266 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6267 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6268 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6269
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6270 /*
6271 * 2: check for cacheability.
6272 */
6273
6274 switch (txn->status) {
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]6275 case 100:
6276 /*
6277 * We may be facing a 100-continue response, in which case this
6278 * is not the right response, and we're waiting for the next one.
6279 * Let's allow this response to go to the client and wait for the
6280 * next one.
6281 */
6282 hdr_idx_init(&txn->hdr_idx);
6283 msg->next -= channel_forward(rep, msg->next);
6284 msg->msg_state = HTTP_MSG_RPBEFORE;
6285 txn->status = 0;
6286 s->logs.t_data = -1; /* was not a response yet */
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6287 FLT_STRM_CB(s, flt_http_reset(s, msg));
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]6288 goto next_one;
6289
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6290 case 200:
6291 case 203:
6292 case 206:
6293 case 300:
6294 case 301:
6295 case 410:
6296 /* RFC2616 @13.4:
6297 * "A response received with a status code of
6298 * 200, 203, 206, 300, 301 or 410 MAY be stored
6299 * by a cache (...) unless a cache-control
6300 * directive prohibits caching."
6301 *
6302 * RFC2616 @9.5: POST method :
6303 * "Responses to this method are not cacheable,
6304 * unless the response includes appropriate
6305 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6306 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6307 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6308 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6309 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
6310 break;
6311 default:
6312 break;
6313 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6314
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6315 /*
6316 * 3: we may need to capture headers
6317 */
6318 s->logs.logwait &= ~LW_RESP;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6319 if (unlikely((s->logs.logwait & LW_RSPHDR) && s->res_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6320 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6321 s->res_cap, sess->fe->rsp_cap);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6322
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6323 /* 4: determine the transfer-length according to RFC2616 #4.4, updated
6324 * by RFC7230#3.3.3 :
6325 *
6326 * The length of a message body is determined by one of the following
6327 * (in order of precedence):
6328 *
Christopher Fauletd1cd2092016-11-28 10:14:03 +0100[diff] [blame]6329 * 1. Any 2xx (Successful) response to a CONNECT request implies that
6330 * the connection will become a tunnel immediately after the empty
6331 * line that concludes the header fields. A client MUST ignore
6332 * any Content-Length or Transfer-Encoding header fields received
6333 * in such a message. Any 101 response (Switching Protocols) is
6334 * managed in the same manner.
6335 *
6336 * 2. Any response to a HEAD request and any response with a 1xx
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6337 * (Informational), 204 (No Content), or 304 (Not Modified) status
6338 * code is always terminated by the first empty line after the
6339 * header fields, regardless of the header fields present in the
6340 * message, and thus cannot contain a message body.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6341 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6342 * 3. If a Transfer-Encoding header field is present and the chunked
6343 * transfer coding (Section 4.1) is the final encoding, the message
6344 * body length is determined by reading and decoding the chunked
6345 * data until the transfer coding indicates the data is complete.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6346 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6347 * If a Transfer-Encoding header field is present in a response and
6348 * the chunked transfer coding is not the final encoding, the
6349 * message body length is determined by reading the connection until
6350 * it is closed by the server. If a Transfer-Encoding header field
6351 * is present in a request and the chunked transfer coding is not
6352 * the final encoding, the message body length cannot be determined
6353 * reliably; the server MUST respond with the 400 (Bad Request)
6354 * status code and then close the connection.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6355 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6356 * If a message is received with both a Transfer-Encoding and a
6357 * Content-Length header field, the Transfer-Encoding overrides the
6358 * Content-Length. Such a message might indicate an attempt to
6359 * perform request smuggling (Section 9.5) or response splitting
6360 * (Section 9.4) and ought to be handled as an error. A sender MUST
6361 * remove the received Content-Length field prior to forwarding such
6362 * a message downstream.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6363 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6364 * 4. If a message is received without Transfer-Encoding and with
6365 * either multiple Content-Length header fields having differing
6366 * field-values or a single Content-Length header field having an
6367 * invalid value, then the message framing is invalid and the
6368 * recipient MUST treat it as an unrecoverable error. If this is a
6369 * request message, the server MUST respond with a 400 (Bad Request)
6370 * status code and then close the connection. If this is a response
6371 * message received by a proxy, the proxy MUST close the connection
6372 * to the server, discard the received response, and send a 502 (Bad
6373 * Gateway) response to the client. If this is a response message
6374 * received by a user agent, the user agent MUST close the
6375 * connection to the server and discard the received response.
6376 *
6377 * 5. If a valid Content-Length header field is present without
6378 * Transfer-Encoding, its decimal value defines the expected message
6379 * body length in octets. If the sender closes the connection or
6380 * the recipient times out before the indicated number of octets are
6381 * received, the recipient MUST consider the message to be
6382 * incomplete and close the connection.
6383 *
6384 * 6. If this is a request message and none of the above are true, then
6385 * the message body length is zero (no message body is present).
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6386 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6387 * 7. Otherwise, this is a response message without a declared message
6388 * body length, so the message body length is determined by the
6389 * number of octets received prior to the server closing the
6390 * connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6391 */
6392
6393 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6394 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6395 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6396 * FIXME: should we parse anyway and return an error on chunked encoding ?
6397 */
Christopher Fauletd1cd2092016-11-28 10:14:03 +0100[diff] [blame]6398 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
6399 txn->status == 101)) {
6400 /* Either we've established an explicit tunnel, or we're
6401 * switching the protocol. In both cases, we're very unlikely
6402 * to understand the next protocols. We have to switch to tunnel
6403 * mode, so that we transfer the request and responses then let
6404 * this protocol pass unmodified. When we later implement specific
6405 * parsers for such protocols, we'll want to check the Upgrade
6406 * header which contains information about that protocol for
6407 * responses with status 101 (eg: see RFC2817 about TLS).
6408 */
6409 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
6410 msg->flags |= HTTP_MSGF_XFER_LEN;
6411 goto end;
6412 }
6413
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6414 if (txn->meth == HTTP_METH_HEAD ||
6415 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6416 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6417 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6418 goto skip_content_length;
6419 }
6420
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6421 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6422 ctx.idx = 0;
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]6423 while (http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6424 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6425 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
6426 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6427 /* bad transfer-encoding (chunked followed by something else) */
6428 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6429 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6430 break;
6431 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6432 }
6433
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6434 /* Chunked responses must have their content-length removed */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6435 ctx.idx = 0;
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6436 if (use_close_only || (msg->flags & HTTP_MSGF_TE_CHNK)) {
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6437 while (http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx))
6438 http_remove_header2(msg, &txn->hdr_idx, &ctx);
6439 }
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6440 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]6441 signed long long cl;
6442
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6443 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6444 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6445 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6446 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6447
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6448 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6449 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6450 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6451 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6452
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6453 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6454 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6455 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6456 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6457
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6458 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6459 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6460 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6461 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6462
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6463 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6464 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6465 }
6466
Christopher Fauletd1cd2092016-11-28 10:14:03 +0100[diff] [blame]6467 skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6468 /* Now we have to check if we need to modify the Connection header.
6469 * This is more difficult on the response than it is on the request,
6470 * because we can have two different HTTP versions and we don't know
6471 * how the client will interprete a response. For instance, let's say
6472 * that the client sends a keep-alive request in HTTP/1.0 and gets an
6473 * HTTP/1.1 response without any header. Maybe it will bound itself to
6474 * HTTP/1.0 because it only knows about it, and will consider the lack
6475 * of header as a close, or maybe it knows HTTP/1.1 and can consider
6476 * the lack of header as a keep-alive. Thus we will use two flags
6477 * indicating how a request MAY be understood by the client. In case
6478 * of multiple possibilities, we'll fix the header to be explicit. If
6479 * ambiguous cases such as both close and keepalive are seen, then we
6480 * will fall back to explicit close. Note that we won't take risks with
6481 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6482 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6483 */
Christopher Fauletd1cd2092016-11-28 10:14:03 +0100[diff] [blame]6484 if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
6485 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
6486 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6487 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6488 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6489
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6490 /* this situation happens when combining pretend-keepalive with httpclose. */
6491 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6492 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6493 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6494 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
6495
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6496 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6497 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6498 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
6499 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6500
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6501 /* now adjust header transformations depending on current state */
6502 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
6503 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
6504 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6505 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6506 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6507 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6508 else { /* SCL / KAL */
6509 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6510 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6511 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6512 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6513
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6514 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6515 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6516
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6517 /* Some keep-alive responses are converted to Server-close if
6518 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6519 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6520 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
6521 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6522 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6523 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6524 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6525 }
6526
Christopher Fauletd1cd2092016-11-28 10:14:03 +0100[diff] [blame]6527 end:
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6528 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6529 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6530
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6531 /* end of job, return OK */
6532 rep->analysers &= ~an_bit;
6533 rep->analyse_exp = TICK_ETERNITY;
6534 channel_auto_close(rep);
6535 return 1;
6536
6537 abort_keep_alive:
6538 /* A keep-alive request to the server failed on a network error.
6539 * The client is required to retry. We need to close without returning
6540 * any other information so that the client retries.
6541 */
6542 txn->status = 0;
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6543 rep->analysers &= AN_RES_FLT_END;
6544 s->req.analysers &= AN_REQ_FLT_END;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6545 channel_auto_close(rep);
6546 s->logs.logwait = 0;
6547 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6548 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6549 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6550 http_reply_and_close(s, txn->status, NULL);
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6551 return 0;
6552}
6553
6554/* This function performs all the processing enabled for the current response.
6555 * It normally returns 1 unless it wants to break. It relies on buffers flags,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6556 * and updates s->res.analysers. It might make sense to explode it into several
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6557 * other functions. It works like process_request (see indications above).
6558 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6559int 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]6560{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6561 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6562 struct http_txn *txn = s->txn;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6563 struct http_msg *msg = &txn->rsp;
6564 struct proxy *cur_proxy;
6565 struct cond_wordlist *wl;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]6566 enum rule_result ret = HTTP_RULE_RES_CONT;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6567
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6568 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]6569 now_ms, __FUNCTION__,
6570 s,
6571 rep,
6572 rep->rex, rep->wex,
6573 rep->flags,
6574 rep->buf->i,
6575 rep->analysers);
6576
6577 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
6578 return 0;
6579
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6580 /* The stats applet needs to adjust the Connection header but we don't
6581 * apply any filter there.
6582 */
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6583 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
6584 rep->analysers &= ~an_bit;
6585 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6586 goto skip_filters;
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6587 }
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6588
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6589 /*
6590 * We will have to evaluate the filters.
6591 * As opposed to version 1.2, now they will be evaluated in the
6592 * filters order and not in the header order. This means that
6593 * each filter has to be validated among all headers.
6594 *
6595 * Filters are tried with ->be first, then with ->fe if it is
6596 * different from ->be.
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6597 *
6598 * Maybe we are in resume condiion. In this case I choose the
6599 * "struct proxy" which contains the rule list matching the resume
6600 * pointer. If none of theses "struct proxy" match, I initialise
6601 * the process with the first one.
6602 *
6603 * In fact, I check only correspondance betwwen the current list
6604 * pointer and the ->fe rule list. If it doesn't match, I initialize
6605 * the loop with the ->be.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6606 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6607 if (s->current_rule_list == &sess->fe->http_res_rules)
6608 cur_proxy = sess->fe;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6609 else
6610 cur_proxy = s->be;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6611 while (1) {
6612 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6613
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6614 /* evaluate http-response rules */
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6615 if (ret == HTTP_RULE_RES_CONT) {
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]6616 ret = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, s);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]6617
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6618 if (ret == HTTP_RULE_RES_BADREQ)
6619 goto return_srv_prx_502;
6620
6621 if (ret == HTTP_RULE_RES_DONE) {
6622 rep->analysers &= ~an_bit;
6623 rep->analyse_exp = TICK_ETERNITY;
6624 return 1;
6625 }
6626 }
6627
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6628 /* we need to be called again. */
6629 if (ret == HTTP_RULE_RES_YIELD) {
6630 channel_dont_close(rep);
6631 return 0;
6632 }
6633
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6634 /* try headers filters */
6635 if (rule_set->rsp_exp != NULL) {
6636 if (apply_filters_to_response(s, rep, rule_set) < 0) {
6637 return_bad_resp:
6638 if (objt_server(s->target)) {
6639 objt_server(s->target)->counters.failed_resp++;
6640 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6641 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6642 s->be->be_counters.failed_resp++;
6643 return_srv_prx_502:
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6644 rep->analysers &= AN_RES_FLT_END;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6645 txn->status = 502;
6646 s->logs.t_data = -1; /* was not a valid response */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6647 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6648 channel_truncate(rep);
Jarno Huuskonen9e6906b2017-03-06 14:21:49 +0200[diff] [blame]6649 http_reply_and_close(s, txn->status, http_error_message(s));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6650 if (!(s->flags & SF_ERR_MASK))
6651 s->flags |= SF_ERR_PRXCOND;
6652 if (!(s->flags & SF_FINST_MASK))
6653 s->flags |= SF_FINST_H;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6654 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6655 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6656 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6657
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6658 /* has the response been denied ? */
6659 if (txn->flags & TX_SVDENY) {
6660 if (objt_server(s->target))
6661 objt_server(s->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6662
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6663 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6664 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6665 if (sess->listener->counters)
6666 sess->listener->counters->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6667
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6668 goto return_srv_prx_502;
6669 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]6670
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6671 /* add response headers from the rule sets in the same order */
6672 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6673 if (txn->status < 200 && txn->status != 101)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6674 break;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6675 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]6676 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]6677 ret = acl_pass(ret);
6678 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
6679 ret = !ret;
6680 if (!ret)
6681 continue;
6682 }
6683 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
6684 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6685 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6686
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6687 /* check whether we're already working on the frontend */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6688 if (cur_proxy == sess->fe)
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6689 break;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6690 cur_proxy = sess->fe;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6691 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6692
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6693 /* After this point, this anayzer can't return yield, so we can
6694 * remove the bit corresponding to this analyzer from the list.
6695 *
6696 * Note that the intermediate returns and goto found previously
6697 * reset the analyzers.
6698 */
6699 rep->analysers &= ~an_bit;
6700 rep->analyse_exp = TICK_ETERNITY;
6701
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6702 /* OK that's all we can do for 1xx responses */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6703 if (unlikely(txn->status < 200 && txn->status != 101))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6704 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6705
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6706 /*
6707 * Now check for a server cookie.
6708 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]6709 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]6710 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6711
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6712 /*
6713 * Check for cache-control or pragma headers if required.
6714 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6715 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]6716 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6717
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6718 /*
6719 * Add server cookie in the response if needed
6720 */
6721 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
6722 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6723 (!(s->flags & SF_DIRECT) ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6724 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
6725 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
6726 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
6727 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
6728 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6729 !(s->flags & SF_IGNORE_PRST)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6730 /* the server is known, it's not the one the client requested, or the
6731 * cookie's last seen date needs to be refreshed. We have to
6732 * insert a set-cookie here, except if we want to insert only on POST
6733 * requests and this one isn't. Note that servers which don't have cookies
6734 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6735 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6736 if (!objt_server(s->target)->cookie) {
6737 chunk_printf(&trash,
6738 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
6739 s->be->cookie_name);
6740 }
6741 else {
6742 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]6743
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6744 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
6745 /* emit last_date, which is mandatory */
6746 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6747 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6748 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6749
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6750 if (s->be->cookie_maxlife) {
6751 /* emit first_date, which is either the original one or
6752 * the current date.
6753 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6754 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6755 s30tob64(txn->cookie_first_date ?
6756 txn->cookie_first_date >> 2 :
6757 (date.tv_sec+3) >> 2, trash.str + trash.len);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6758 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6759 }
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6760 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6761 chunk_appendf(&trash, "; path=/");
6762 }
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6763
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6764 if (s->be->cookie_domain)
6765 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6766
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6767 if (s->be->ck_opts & PR_CK_HTTPONLY)
6768 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6769
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6770 if (s->be->ck_opts & PR_CK_SECURE)
6771 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6772
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6773 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
6774 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6775
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6776 txn->flags &= ~TX_SCK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6777 if (objt_server(s->target)->cookie && (s->flags & SF_DIRECT))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6778 /* the server did not change, only the date was updated */
6779 txn->flags |= TX_SCK_UPDATED;
6780 else
6781 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6782
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6783 /* Here, we will tell an eventual cache on the client side that we don't
6784 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6785 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6786 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6787 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6788 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6789
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6790 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6791
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6792 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
6793 "Cache-control: private", 22) < 0))
6794 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6795 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6796 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6797
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6798 /*
6799 * Check if result will be cacheable with a cookie.
6800 * We'll block the response if security checks have caught
6801 * nasty things such as a cacheable cookie.
6802 */
6803 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6804 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
6805 (s->be->options & PR_O_CHK_CACHE)) {
6806 /* we're in presence of a cacheable response containing
6807 * a set-cookie header. We'll block it as requested by
6808 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6809 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6810 if (objt_server(s->target))
6811 objt_server(s->target)->counters.failed_secu++;
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6812
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6813 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6814 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6815 if (sess->listener->counters)
6816 sess->listener->counters->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6817
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6818 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
6819 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6820 send_log(s->be, LOG_ALERT,
6821 "Blocking cacheable cookie in response from instance %s, server %s.\n",
6822 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6823 goto return_srv_prx_502;
6824 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6825
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6826 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6827 /*
6828 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
6829 * If an "Upgrade" token is found, the header is left untouched in order
6830 * 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]6831 * if anything but "Upgrade" is present in the Connection header. We don't
6832 * want to touch any 101 response either since it's switching to another
6833 * protocol.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6834 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6835 if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) &&
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6836 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6837 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6838 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
6839 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6840
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6841 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6842 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6843 /* we want a keep-alive response here. Keep-alive header
6844 * required if either side is not 1.1.
6845 */
6846 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
6847 want_flags |= TX_CON_KAL_SET;
6848 }
6849 else {
6850 /* we want a close response here. Close header required if
6851 * the server is 1.1, regardless of the client.
6852 */
6853 if (msg->flags & HTTP_MSGF_VER_11)
6854 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6855 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6856
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6857 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
6858 http_change_connection_header(txn, msg, want_flags);
6859 }
6860
6861 skip_header_mangling:
Christopher Fauletf1cc5d02017-02-08 09:45:13 +0100[diff] [blame]6862 if ((msg->flags & HTTP_MSGF_XFER_LEN) || HAS_DATA_FILTERS(s, rep) ||
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6863 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]6864 rep->analysers &= ~AN_RES_FLT_XFER_DATA;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6865 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6866 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6867
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6868 /* if the user wants to log as soon as possible, without counting
6869 * bytes from the server, then this is the right moment. We have
6870 * to temporarily assign bytes_out to log what we currently have.
6871 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6872 if (!LIST_ISEMPTY(&sess->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6873 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
6874 s->logs.bytes_out = txn->rsp.eoh;
6875 s->do_log(s);
6876 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6877 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6878 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6879}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6880
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6881/* This function is an analyser which forwards response body (including chunk
6882 * sizes if any). It is called as soon as we must forward, even if we forward
6883 * zero byte. The only situation where it must not be called is when we're in
6884 * tunnel mode and we want to forward till the close. It's used both to forward
6885 * remaining data and to resync after end of body. It expects the msg_state to
6886 * 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]6887 * 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]6888 *
6889 * It is capable of compressing response data both in content-length mode and
6890 * in chunked mode. The state machines follows different flows depending on
6891 * whether content-length and chunked modes are used, since there are no
6892 * trailers in content-length :
6893 *
6894 * chk-mode cl-mode
6895 * ,----- BODY -----.
6896 * / \
6897 * V size > 0 V chk-mode
6898 * .--> SIZE -------------> DATA -------------> CRLF
6899 * | | size == 0 | last byte |
6900 * | v final crlf v inspected |
6901 * | TRAILERS -----------> DONE |
6902 * | |
6903 * `----------------------------------------------'
6904 *
6905 * Compression only happens in the DATA state, and must be flushed in final
6906 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
6907 * is performed at once on final states for all bytes parsed, or when leaving
6908 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6909 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6910int http_response_forward_body(struct stream *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6911{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6912 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6913 struct http_txn *txn = s->txn;
6914 struct http_msg *msg = &s->txn->rsp;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6915 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6916
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6917 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6918 return 0;
6919
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6920 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]6921 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6922 !s->req.analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6923 /* Output closed while we were sending data. We must abort and
6924 * wake the other side up.
6925 */
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]6926 msg->err_state = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6927 msg->msg_state = HTTP_MSG_ERROR;
6928 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6929 return 1;
6930 }
6931
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6932 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6933 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6934
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6935 if (msg->msg_state == HTTP_MSG_BODY) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6936 msg->msg_state = ((msg->flags & HTTP_MSGF_TE_CHNK)
6937 ? HTTP_MSG_CHUNK_SIZE
6938 : HTTP_MSG_DATA);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6939 }
6940
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6941 if (res->to_forward) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6942 /* We can't process the buffer's contents yet */
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6943 res->flags |= CF_WAKE_WRITE;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6944 goto missing_data_or_waiting;
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6945 }
6946
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6947 if (msg->msg_state < HTTP_MSG_DONE) {
6948 ret = ((msg->flags & HTTP_MSGF_TE_CHNK)
6949 ? http_msg_forward_chunked_body(s, msg)
6950 : http_msg_forward_body(s, msg));
6951 if (!ret)
6952 goto missing_data_or_waiting;
6953 if (ret < 0)
6954 goto return_bad_res;
6955 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6956
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6957 /* other states, DONE...TUNNEL */
6958 /* for keep-alive we don't want to forward closes on DONE */
6959 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6960 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
6961 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]6962
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6963 if (http_resync_states(s)) {
6964 /* some state changes occurred, maybe the analyser was disabled
6965 * too. */
6966 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
6967 if (res->flags & CF_SHUTW) {
6968 /* response errors are most likely due to the
6969 * client aborting the transfer. */
6970 goto aborted_xfer;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6971 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6972 if (msg->err_pos >= 0)
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]6973 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]6974 goto return_bad_res;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6975 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6976 return 1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6977 }
Willy Tarreauf51d03c2016-05-02 15:25:15 +0200[diff] [blame]6978 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6979
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6980 missing_data_or_waiting:
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6981 if (res->flags & CF_SHUTW)
6982 goto aborted_xfer;
6983
6984 /* stop waiting for data if the input is closed before the end. If the
6985 * client side was already closed, it means that the client has aborted,
6986 * so we don't want to count this as a server abort. Otherwise it's a
6987 * server abort.
6988 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6989 if (res->flags & CF_SHUTR) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6990 if ((s->req.flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6991 goto aborted_xfer;
Christopher Fauleta46bbd82015-06-19 09:00:58 +0200[diff] [blame]6992 /* If we have some pending data, we continue the processing */
6993 if (!buffer_pending(res->buf)) {
6994 if (!(s->flags & SF_ERR_MASK))
6995 s->flags |= SF_ERR_SRVCL;
6996 s->be->be_counters.srv_aborts++;
6997 if (objt_server(s->target))
6998 objt_server(s->target)->counters.srv_aborts++;
6999 goto return_bad_res_stats_ok;
7000 }
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]7001 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]7002
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]7003 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7004 if (!s->req.analysers)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]7005 goto return_bad_res;
7006
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7007 /* When TE: chunked is used, we need to get there again to parse
7008 * remaining chunks even if the server has closed, so we don't want to
7009 * set CF_DONTCLOSE. Similarly, if the body length is undefined, if
7010 * keep-alive is set on the client side or if there are filters
7011 * registered on the stream, we don't want to forward a close
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7012 */
Christopher Fauletf1cc5d02017-02-08 09:45:13 +0100[diff] [blame]7013 if ((msg->flags & HTTP_MSGF_TE_CHNK) || !(msg->flags & HTTP_MSGF_XFER_LEN) ||
7014 HAS_DATA_FILTERS(s, res) ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7015 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
7016 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]7017 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7018
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7019 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7020 * 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]7021 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]7022 * modes are already handled by the stream sock layer. We must not do
7023 * this in content-length mode because it could present the MSG_MORE
7024 * flag with the last block of forwarded data, which would cause an
7025 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7026 */
Christopher Faulet92d36382015-11-05 13:35:03 +0100[diff] [blame]7027 if ((msg->flags & HTTP_MSGF_TE_CHNK) || (msg->flags & HTTP_MSGF_COMPRESSING))
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7028 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7029
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7030 /* the stream handler will take care of timeouts and errors */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7031 return 0;
7032
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]7033 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]7034 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7035 if (objt_server(s->target))
7036 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7037
7038 return_bad_res_stats_ok:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]7039 txn->rsp.err_state = txn->rsp.msg_state;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7040 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]7041 /* don't send any error message as we're in the body */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]7042 http_reply_and_close(s, txn->status, NULL);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]7043 res->analysers &= AN_RES_FLT_END;
7044 s->req.analysers &= AN_REQ_FLT_END; /* we're in data phase, we want to abort both directions */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7045 if (objt_server(s->target))
7046 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7047
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7048 if (!(s->flags & SF_ERR_MASK))
7049 s->flags |= SF_ERR_PRXCOND;
7050 if (!(s->flags & SF_FINST_MASK))
7051 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7052 return 0;
7053
7054 aborted_xfer:
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]7055 txn->rsp.err_state = txn->rsp.msg_state;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7056 txn->rsp.msg_state = HTTP_MSG_ERROR;
7057 /* don't send any error message as we're in the body */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]7058 http_reply_and_close(s, txn->status, NULL);
Christopher Faulet0184ea72017-01-05 14:06:34 +0100[diff] [blame]7059 res->analysers &= AN_RES_FLT_END;
7060 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]7061
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7062 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]7063 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7064 if (objt_server(s->target))
7065 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7066
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7067 if (!(s->flags & SF_ERR_MASK))
7068 s->flags |= SF_ERR_CLICL;
7069 if (!(s->flags & SF_FINST_MASK))
7070 s->flags |= SF_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7071 return 0;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7072}
7073
7074
7075static inline int
7076http_msg_forward_body(struct stream *s, struct http_msg *msg)
7077{
7078 struct channel *chn = msg->chn;
7079 int ret;
7080
7081 /* Here we have the guarantee to be in HTTP_MSG_DATA or HTTP_MSG_ENDING state */
7082
7083 if (msg->msg_state == HTTP_MSG_ENDING)
7084 goto ending;
7085
7086 /* Neither content-length, nor transfer-encoding was found, so we must
7087 * read the body until the server connection is closed. In that case, we
7088 * eat data as they come. Of course, this happens for response only. */
7089 if (!(msg->flags & HTTP_MSGF_XFER_LEN)) {
7090 unsigned long long len = (chn->buf->i - msg->next);
7091 msg->chunk_len += len;
7092 msg->body_len += len;
7093 }
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7094 ret = FLT_STRM_DATA_CB(s, chn, flt_http_data(s, msg),
7095 /* default_ret */ MIN(msg->chunk_len, chn->buf->i - msg->next),
7096 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7097 msg->next += ret;
7098 msg->chunk_len -= ret;
7099 if (msg->chunk_len) {
7100 /* input empty or output full */
7101 if (chn->buf->i > msg->next)
7102 chn->flags |= CF_WAKE_WRITE;
7103 goto missing_data_or_waiting;
7104 }
7105
Christopher Fauletf1cc5d02017-02-08 09:45:13 +0100[diff] [blame]7106 /* The server still sending data that should be filtered */
7107 if (!(msg->flags & HTTP_MSGF_XFER_LEN) && !(chn->flags & CF_SHUTR))
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7108 goto missing_data_or_waiting;
Christopher Fauletf1cc5d02017-02-08 09:45:13 +0100[diff] [blame]7109
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7110 msg->msg_state = HTTP_MSG_ENDING;
7111
7112 ending:
7113 /* we may have some pending data starting at res->buf->p such as a last
7114 * chunk of data or trailers. */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7115 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
7116 /* default_ret */ msg->next,
7117 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7118 b_adv(chn->buf, ret);
7119 msg->next -= ret;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]7120 if (unlikely(!(chn->flags & CF_WROTE_DATA) || msg->sov > 0))
7121 msg->sov -= ret;
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]7122 if (msg->next)
7123 goto waiting;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]7124
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7125 FLT_STRM_DATA_CB(s, chn, flt_http_end(s, msg),
7126 /* default_ret */ 1,
7127 /* on_error */ goto error,
7128 /* on_wait */ goto waiting);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7129 msg->msg_state = HTTP_MSG_DONE;
7130 return 1;
7131
7132 missing_data_or_waiting:
7133 /* we may have some pending data starting at chn->buf->p */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7134 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
7135 /* default_ret */ msg->next,
7136 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7137 b_adv(chn->buf, ret);
7138 msg->next -= ret;
7139 if (!(chn->flags & CF_WROTE_DATA) || msg->sov > 0)
7140 msg->sov -= ret;
Christopher Faulet75e2eb62015-12-15 10:41:47 +0100[diff] [blame]7141 if (!HAS_DATA_FILTERS(s, chn))
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7142 msg->chunk_len -= channel_forward(chn, msg->chunk_len);
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]7143 waiting:
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7144 return 0;
7145 error:
7146 return -1;
7147}
7148
7149static inline int
7150http_msg_forward_chunked_body(struct stream *s, struct http_msg *msg)
7151{
7152 struct channel *chn = msg->chn;
7153 int ret;
7154
7155 /* Here we have the guarantee to be in one of the following state:
7156 * HTTP_MSG_DATA, HTTP_MSG_CHUNK_SIZE, HTTP_MSG_CHUNK_CRLF,
7157 * HTTP_MSG_TRAILERS or HTTP_MSG_ENDING. */
7158
7159 switch_states:
7160 switch (msg->msg_state) {
7161 case HTTP_MSG_DATA:
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7162 ret = FLT_STRM_DATA_CB(s, chn, flt_http_data(s, msg),
7163 /* default_ret */ MIN(msg->chunk_len, chn->buf->i - msg->next),
7164 /* on_error */ goto error);
7165 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7166 msg->chunk_len -= ret;
7167 if (msg->chunk_len) {
7168 /* input empty or output full */
7169 if (chn->buf->i > msg->next)
7170 chn->flags |= CF_WAKE_WRITE;
7171 goto missing_data_or_waiting;
7172 }
7173
7174 /* nothing left to forward for this chunk*/
7175 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
7176 /* fall through for HTTP_MSG_CHUNK_CRLF */
7177
7178 case HTTP_MSG_CHUNK_CRLF:
7179 /* we want the CRLF after the data */
7180 ret = http_skip_chunk_crlf(msg);
7181 if (ret == 0)
7182 goto missing_data_or_waiting;
7183 if (ret < 0)
7184 goto chunk_parsing_error;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]7185 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7186 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
7187 /* fall through for HTTP_MSG_CHUNK_SIZE */
7188
7189 case HTTP_MSG_CHUNK_SIZE:
7190 /* read the chunk size and assign it to ->chunk_len,
7191 * then set ->next to point to the body and switch to
7192 * DATA or TRAILERS state.
7193 */
7194 ret = http_parse_chunk_size(msg);
7195 if (ret == 0)
7196 goto missing_data_or_waiting;
7197 if (ret < 0)
7198 goto chunk_parsing_error;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]7199 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7200 if (msg->chunk_len) {
7201 msg->msg_state = HTTP_MSG_DATA;
7202 goto switch_states;
7203 }
7204 msg->msg_state = HTTP_MSG_TRAILERS;
7205 /* fall through for HTTP_MSG_TRAILERS */
7206
7207 case HTTP_MSG_TRAILERS:
7208 ret = http_forward_trailers(msg);
7209 if (ret < 0)
7210 goto chunk_parsing_error;
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7211 FLT_STRM_DATA_CB(s, chn, flt_http_chunk_trailers(s, msg),
7212 /* default_ret */ 1,
7213 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7214 msg->next += msg->sol;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7215 if (!ret)
7216 goto missing_data_or_waiting;
7217 break;
7218
7219 case HTTP_MSG_ENDING:
7220 goto ending;
7221
7222 default:
7223 /* This should no happen in this function */
7224 goto error;
7225 }
7226
7227 msg->msg_state = HTTP_MSG_ENDING;
7228 ending:
7229 /* we may have some pending data starting at res->buf->p such as a last
7230 * chunk of data or trailers. */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7231 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]7232 /* default_ret */ msg->next,
7233 /* on_error */ goto error);
7234 b_adv(chn->buf, ret);
7235 msg->next -= ret;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]7236 if (unlikely(!(chn->flags & CF_WROTE_DATA) || msg->sov > 0))
7237 msg->sov -= ret;
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]7238 if (msg->next)
7239 goto waiting;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]7240
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7241 FLT_STRM_DATA_CB(s, chn, flt_http_end(s, msg),
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7242 /* default_ret */ 1,
7243 /* on_error */ goto error,
7244 /* on_wait */ goto waiting);
7245 msg->msg_state = HTTP_MSG_DONE;
7246 return 1;
7247
7248 missing_data_or_waiting:
7249 /* we may have some pending data starting at chn->buf->p */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7250 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]7251 /* default_ret */ msg->next,
7252 /* on_error */ goto error);
7253 b_adv(chn->buf, ret);
7254 msg->next -= ret;
7255 if (!(chn->flags & CF_WROTE_DATA) || msg->sov > 0)
7256 msg->sov -= ret;
Christopher Faulet75e2eb62015-12-15 10:41:47 +0100[diff] [blame]7257 if (!HAS_DATA_FILTERS(s, chn))
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7258 msg->chunk_len -= channel_forward(chn, msg->chunk_len);
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]7259 waiting:
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7260 return 0;
7261
7262 chunk_parsing_error:
7263 if (msg->err_pos >= 0) {
7264 if (chn->flags & CF_ISRESP)
7265 http_capture_bad_message(&s->be->invalid_rep, s, msg,
7266 msg->msg_state, strm_fe(s));
7267 else
7268 http_capture_bad_message(&strm_fe(s)->invalid_req, s,
7269 msg, msg->msg_state, s->be);
7270 }
7271 error:
7272 return -1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7273}
7274
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7275
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7276/* Iterate the same filter through all request headers.
7277 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7278 * Since it can manage the switch to another backend, it updates the per-proxy
7279 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7280 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7281int 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]7282{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7283 char *cur_ptr, *cur_end, *cur_next;
7284 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7285 struct http_txn *txn = s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7286 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7287 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]7288
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7289 last_hdr = 0;
7290
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7291 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7292 old_idx = 0;
7293
7294 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7295 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7296 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7297 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7298 (exp->action == ACT_ALLOW ||
7299 exp->action == ACT_DENY ||
7300 exp->action == ACT_TARPIT))
7301 return 0;
7302
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7303 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7304 if (!cur_idx)
7305 break;
7306
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7307 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7308 cur_ptr = cur_next;
7309 cur_end = cur_ptr + cur_hdr->len;
7310 cur_next = cur_end + cur_hdr->cr + 1;
7311
7312 /* Now we have one header between cur_ptr and cur_end,
7313 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7314 */
7315
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7316 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]7317 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7318 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7319 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7320 last_hdr = 1;
7321 break;
7322
7323 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7324 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7325 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7326 break;
7327
7328 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7329 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7330 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7331 break;
7332
7333 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7334 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7335 if (trash.len < 0)
7336 return -1;
7337
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7338 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7339 /* FIXME: if the user adds a newline in the replacement, the
7340 * index will not be recalculated for now, and the new line
7341 * will not be counted as a new header.
7342 */
7343
7344 cur_end += delta;
7345 cur_next += delta;
7346 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7347 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7348 break;
7349
7350 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7351 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7352 cur_next += delta;
7353
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7354 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7355 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7356 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7357 cur_hdr->len = 0;
7358 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7359 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7360 break;
7361
7362 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7363 }
7364
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7365 /* keep the link from this header to next one in case of later
7366 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7367 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7368 old_idx = cur_idx;
7369 }
7370 return 0;
7371}
7372
7373
7374/* Apply the filter to the request line.
7375 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7376 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7377 * Since it can manage the switch to another backend, it updates the per-proxy
7378 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7379 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7380int 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]7381{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7382 char *cur_ptr, *cur_end;
7383 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7384 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7385 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7386
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7387 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7388 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7389 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7390 (exp->action == ACT_ALLOW ||
7391 exp->action == ACT_DENY ||
7392 exp->action == ACT_TARPIT))
7393 return 0;
7394 else if (exp->action == ACT_REMOVE)
7395 return 0;
7396
7397 done = 0;
7398
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7399 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7400 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7401
7402 /* Now we have the request line between cur_ptr and cur_end */
7403
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7404 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]7405 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7406 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7407 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7408 done = 1;
7409 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7410
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7411 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7412 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7413 done = 1;
7414 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7415
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7416 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7417 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7418 done = 1;
7419 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7420
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7421 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7422 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7423 if (trash.len < 0)
7424 return -1;
7425
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7426 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7427 /* FIXME: if the user adds a newline in the replacement, the
7428 * index will not be recalculated for now, and the new line
7429 * will not be counted as a new header.
7430 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7431
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7432 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7433 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7434 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7435 HTTP_MSG_RQMETH,
7436 cur_ptr, cur_end + 1,
7437 NULL, NULL);
7438 if (unlikely(!cur_end))
7439 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7440
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7441 /* we have a full request and we know that we have either a CR
7442 * or an LF at <ptr>.
7443 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7444 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
7445 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]7446 /* there is no point trying this regex on headers */
7447 return 1;
7448 }
7449 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7450 return done;
7451}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]7452
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7453
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7454
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7455/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7456 * 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]7457 * 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]7458 * unparsable request. Since it can manage the switch to another backend, it
7459 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7460 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7461int apply_filters_to_request(struct stream *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7462{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7463 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7464 struct http_txn *txn = s->txn;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7465 struct hdr_exp *exp;
7466
7467 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7468 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7469
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7470 /*
7471 * The interleaving of transformations and verdicts
7472 * makes it difficult to decide to continue or stop
7473 * the evaluation.
7474 */
7475
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7476 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
7477 break;
7478
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7479 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7480 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7481 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7482 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7483
7484 /* if this filter had a condition, evaluate it now and skip to
7485 * next filter if the condition does not match.
7486 */
7487 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7488 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]7489 ret = acl_pass(ret);
7490 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7491 ret = !ret;
7492
7493 if (!ret)
7494 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7495 }
7496
7497 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7498 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7499 if (unlikely(ret < 0))
7500 return -1;
7501
7502 if (likely(ret == 0)) {
7503 /* The filter did not match the request, it can be
7504 * iterated through all headers.
7505 */
Willy Tarreau34d4c3c2015-01-30 20:58:58 +0100[diff] [blame]7506 if (unlikely(apply_filter_to_req_headers(s, req, exp) < 0))
7507 return -1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7508 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7509 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7510 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7511}
7512
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7513
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7514/* Find the end of a cookie value contained between <s> and <e>. It works the
7515 * same way as with headers above except that the semi-colon also ends a token.
7516 * See RFC2965 for more information. Note that it requires a valid header to
7517 * return a valid result.
7518 */
7519char *find_cookie_value_end(char *s, const char *e)
7520{
7521 int quoted, qdpair;
7522
7523 quoted = qdpair = 0;
7524 for (; s < e; s++) {
7525 if (qdpair) qdpair = 0;
7526 else if (quoted) {
7527 if (*s == '\\') qdpair = 1;
7528 else if (*s == '"') quoted = 0;
7529 }
7530 else if (*s == '"') quoted = 1;
7531 else if (*s == ',' || *s == ';') return s;
7532 }
7533 return s;
7534}
7535
7536/* Delete a value in a header between delimiters <from> and <next> in buffer
7537 * <buf>. The number of characters displaced is returned, and the pointer to
7538 * the first delimiter is updated if required. The function tries as much as
7539 * possible to respect the following principles :
7540 * - replace <from> delimiter by the <next> one unless <from> points to a
7541 * colon, in which case <next> is simply removed
7542 * - set exactly one space character after the new first delimiter, unless
7543 * there are not enough characters in the block being moved to do so.
7544 * - remove unneeded spaces before the previous delimiter and after the new
7545 * one.
7546 *
7547 * It is the caller's responsibility to ensure that :
7548 * - <from> points to a valid delimiter or the colon ;
7549 * - <next> points to a valid delimiter or the final CR/LF ;
7550 * - there are non-space chars before <from> ;
7551 * - there is a CR/LF at or after <next>.
7552 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]7553int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7554{
7555 char *prev = *from;
7556
7557 if (*prev == ':') {
7558 /* We're removing the first value, preserve the colon and add a
7559 * space if possible.
7560 */
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7561 if (!HTTP_IS_CRLF(*next))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7562 next++;
7563 prev++;
7564 if (prev < next)
7565 *prev++ = ' ';
7566
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7567 while (HTTP_IS_SPHT(*next))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7568 next++;
7569 } else {
7570 /* Remove useless spaces before the old delimiter. */
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7571 while (HTTP_IS_SPHT(*(prev-1)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7572 prev--;
7573 *from = prev;
7574
7575 /* copy the delimiter and if possible a space if we're
7576 * not at the end of the line.
7577 */
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7578 if (!HTTP_IS_CRLF(*next)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7579 *prev++ = *next++;
7580 if (prev + 1 < next)
7581 *prev++ = ' ';
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7582 while (HTTP_IS_SPHT(*next))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7583 next++;
7584 }
7585 }
7586 return buffer_replace2(buf, prev, next, NULL, 0);
7587}
7588
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7589/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7590 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7591 * desirable to call it only when needed. This code is quite complex because
7592 * of the multiple very crappy and ambiguous syntaxes we have to support. it
7593 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7594 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7595void manage_client_side_cookies(struct stream *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7596{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7597 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7598 struct session *sess = s->sess;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7599 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7600 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7601 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
7602 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7603
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7604 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]7605 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7606 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7607
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7608 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7609 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7610 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7611
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7612 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7613 hdr_beg = hdr_next;
7614 hdr_end = hdr_beg + cur_hdr->len;
7615 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7616
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7617 /* We have one full header between hdr_beg and hdr_end, and the
7618 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7619 * "Cookie:" headers.
7620 */
7621
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7622 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7623 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7624 old_idx = cur_idx;
7625 continue;
7626 }
7627
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7628 del_from = NULL; /* nothing to be deleted */
7629 preserve_hdr = 0; /* assume we may kill the whole header */
7630
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7631 /* Now look for cookies. Conforming to RFC2109, we have to support
7632 * attributes whose name begin with a '$', and associate them with
7633 * the right cookie, if we want to delete this cookie.
7634 * So there are 3 cases for each cookie read :
7635 * 1) it's a special attribute, beginning with a '$' : ignore it.
7636 * 2) it's a server id cookie that we *MAY* want to delete : save
7637 * some pointers on it (last semi-colon, beginning of cookie...)
7638 * 3) it's an application cookie : we *MAY* have to delete a previous
7639 * "special" cookie.
7640 * At the end of loop, if a "special" cookie remains, we may have to
7641 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7642 * *MUST* delete it.
7643 *
7644 * Note: RFC2965 is unclear about the processing of spaces around
7645 * the equal sign in the ATTR=VALUE form. A careful inspection of
7646 * the RFC explicitly allows spaces before it, and not within the
7647 * tokens (attrs or values). An inspection of RFC2109 allows that
7648 * too but section 10.1.3 lets one think that spaces may be allowed
7649 * after the equal sign too, resulting in some (rare) buggy
7650 * implementations trying to do that. So let's do what servers do.
7651 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
7652 * allowed quoted strings in values, with any possible character
7653 * after a backslash, including control chars and delimitors, which
7654 * causes parsing to become ambiguous. Browsers also allow spaces
7655 * within values even without quotes.
7656 *
7657 * We have to keep multiple pointers in order to support cookie
7658 * removal at the beginning, middle or end of header without
7659 * corrupting the header. All of these headers are valid :
7660 *
7661 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
7662 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
7663 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
7664 * | | | | | | | | |
7665 * | | | | | | | | hdr_end <--+
7666 * | | | | | | | +--> next
7667 * | | | | | | +----> val_end
7668 * | | | | | +-----------> val_beg
7669 * | | | | +--------------> equal
7670 * | | | +----------------> att_end
7671 * | | +---------------------> att_beg
7672 * | +--------------------------> prev
7673 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7674 */
7675
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7676 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
7677 /* Iterate through all cookies on this line */
7678
7679 /* find att_beg */
7680 att_beg = prev + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7681 while (att_beg < hdr_end && HTTP_IS_SPHT(*att_beg))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7682 att_beg++;
7683
7684 /* find att_end : this is the first character after the last non
7685 * space before the equal. It may be equal to hdr_end.
7686 */
7687 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7688
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7689 while (equal < hdr_end) {
7690 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7691 break;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7692 if (HTTP_IS_SPHT(*equal++))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7693 continue;
7694 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7695 }
7696
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7697 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7698 * is between <att_beg> and <equal>, both may be identical.
7699 */
7700
7701 /* look for end of cookie if there is an equal sign */
7702 if (equal < hdr_end && *equal == '=') {
7703 /* look for the beginning of the value */
7704 val_beg = equal + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7705 while (val_beg < hdr_end && HTTP_IS_SPHT(*val_beg))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7706 val_beg++;
7707
7708 /* find the end of the value, respecting quotes */
7709 next = find_cookie_value_end(val_beg, hdr_end);
7710
7711 /* make val_end point to the first white space or delimitor after the value */
7712 val_end = next;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]7713 while (val_end > val_beg && HTTP_IS_SPHT(*(val_end - 1)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7714 val_end--;
7715 } else {
7716 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7717 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7718
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7719 /* We have nothing to do with attributes beginning with '$'. However,
7720 * they will automatically be removed if a header before them is removed,
7721 * since they're supposed to be linked together.
7722 */
7723 if (*att_beg == '$')
7724 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7725
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7726 /* Ignore cookies with no equal sign */
7727 if (equal == next) {
7728 /* This is not our cookie, so we must preserve it. But if we already
7729 * scheduled another cookie for removal, we cannot remove the
7730 * complete header, but we can remove the previous block itself.
7731 */
7732 preserve_hdr = 1;
7733 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7734 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7735 val_end += delta;
7736 next += delta;
7737 hdr_end += delta;
7738 hdr_next += delta;
7739 cur_hdr->len += delta;
7740 http_msg_move_end(&txn->req, delta);
7741 prev = del_from;
7742 del_from = NULL;
7743 }
7744 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7745 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7746
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7747 /* if there are spaces around the equal sign, we need to
7748 * strip them otherwise we'll get trouble for cookie captures,
7749 * or even for rewrites. Since this happens extremely rarely,
7750 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7751 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7752 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7753 int stripped_before = 0;
7754 int stripped_after = 0;
7755
7756 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7757 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7758 equal += stripped_before;
7759 val_beg += stripped_before;
7760 }
7761
7762 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7763 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7764 val_beg += stripped_after;
7765 stripped_before += stripped_after;
7766 }
7767
7768 val_end += stripped_before;
7769 next += stripped_before;
7770 hdr_end += stripped_before;
7771 hdr_next += stripped_before;
7772 cur_hdr->len += stripped_before;
7773 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7774 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7775 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7776
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7777 /* First, let's see if we want to capture this cookie. We check
7778 * that we don't already have a client side cookie, because we
7779 * can only capture one. Also as an optimisation, we ignore
7780 * cookies shorter than the declared name.
7781 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7782 if (sess->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7783 (val_end - att_beg >= sess->fe->capture_namelen) &&
7784 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7785 int log_len = val_end - att_beg;
7786
7787 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7788 Alert("HTTP logging : out of memory.\n");
7789 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7790 if (log_len > sess->fe->capture_len)
7791 log_len = sess->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7792 memcpy(txn->cli_cookie, att_beg, log_len);
7793 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7794 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7795 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7796
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7797 /* Persistence cookies in passive, rewrite or insert mode have the
7798 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7799 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7800 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7801 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7802 * For cookies in prefix mode, the form is :
7803 *
7804 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7805 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7806 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
7807 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
7808 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7809 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7810
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7811 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7812 * have the server ID between val_beg and delim, and the original cookie between
7813 * delim+1 and val_end. Otherwise, delim==val_end :
7814 *
7815 * Cookie: NAME=SRV; # in all but prefix modes
7816 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7817 * | || || | |+-> next
7818 * | || || | +--> val_end
7819 * | || || +---------> delim
7820 * | || |+------------> val_beg
7821 * | || +-------------> att_end = equal
7822 * | |+-----------------> att_beg
7823 * | +------------------> prev
7824 * +-------------------------> hdr_beg
7825 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7826
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7827 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7828 for (delim = val_beg; delim < val_end; delim++)
7829 if (*delim == COOKIE_DELIM)
7830 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7831 } else {
7832 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7833 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7834 /* Now check if the cookie contains a date field, which would
7835 * appear after a vertical bar ('|') just after the server name
7836 * and before the delimiter.
7837 */
7838 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7839 if (vbar1) {
7840 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7841 * right is the last seen date. It is a base64 encoded
7842 * 30-bit value representing the UNIX date since the
7843 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7844 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7845 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7846 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7847 if (val_end - vbar1 >= 5) {
7848 val = b64tos30(vbar1);
7849 if (val > 0)
7850 txn->cookie_last_date = val << 2;
7851 }
7852 /* look for a second vertical bar */
7853 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7854 if (vbar1 && (val_end - vbar1 > 5)) {
7855 val = b64tos30(vbar1 + 1);
7856 if (val > 0)
7857 txn->cookie_first_date = val << 2;
7858 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7859 }
7860 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7861
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7862 /* if the cookie has an expiration date and the proxy wants to check
7863 * it, then we do that now. We first check if the cookie is too old,
7864 * then only if it has expired. We detect strict overflow because the
7865 * time resolution here is not great (4 seconds). Cookies with dates
7866 * in the future are ignored if their offset is beyond one day. This
7867 * allows an admin to fix timezone issues without expiring everyone
7868 * and at the same time avoids keeping unwanted side effects for too
7869 * long.
7870 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7871 if (txn->cookie_first_date && s->be->cookie_maxlife &&
7872 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7873 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7874 txn->flags &= ~TX_CK_MASK;
7875 txn->flags |= TX_CK_OLD;
7876 delim = val_beg; // let's pretend we have not found the cookie
7877 txn->cookie_first_date = 0;
7878 txn->cookie_last_date = 0;
7879 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7880 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
7881 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7882 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7883 txn->flags &= ~TX_CK_MASK;
7884 txn->flags |= TX_CK_EXPIRED;
7885 delim = val_beg; // let's pretend we have not found the cookie
7886 txn->cookie_first_date = 0;
7887 txn->cookie_last_date = 0;
7888 }
7889
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7890 /* Here, we'll look for the first running server which supports the cookie.
7891 * This allows to share a same cookie between several servers, for example
7892 * to dedicate backup servers to specific servers only.
7893 * However, to prevent clients from sticking to cookie-less backup server
7894 * when they have incidentely learned an empty cookie, we simply ignore
7895 * empty cookies and mark them as invalid.
7896 * The same behaviour is applied when persistence must be ignored.
7897 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7898 if ((delim == val_beg) || (s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7899 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7900
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7901 while (srv) {
7902 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7903 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7904 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7905 (s->be->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7906 (s->flags & SF_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7907 /* we found the server and we can use it */
7908 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7909 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7910 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7911 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7912 break;
7913 } else {
7914 /* we found a server, but it's down,
7915 * mark it as such and go on in case
7916 * another one is available.
7917 */
7918 txn->flags &= ~TX_CK_MASK;
7919 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7920 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7921 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7922 srv = srv->next;
7923 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7924
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7925 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7926 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7927 txn->flags &= ~TX_CK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7928 if ((s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7929 txn->flags |= TX_CK_UNUSED;
7930 else
7931 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7932 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7933
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7934 /* depending on the cookie mode, we may have to either :
7935 * - delete the complete cookie if we're in insert+indirect mode, so that
7936 * the server never sees it ;
7937 * - remove the server id from the cookie value, and tag the cookie as an
7938 * application cookie so that it does not get accidentely removed later,
7939 * if we're in cookie prefix mode
7940 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7941 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7942 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7943
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7944 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7945 val_end += delta;
7946 next += delta;
7947 hdr_end += delta;
7948 hdr_next += delta;
7949 cur_hdr->len += delta;
7950 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7951
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7952 del_from = NULL;
7953 preserve_hdr = 1; /* we want to keep this cookie */
7954 }
7955 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7956 (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]7957 del_from = prev;
7958 }
7959 } else {
7960 /* This is not our cookie, so we must preserve it. But if we already
7961 * scheduled another cookie for removal, we cannot remove the
7962 * complete header, but we can remove the previous block itself.
7963 */
7964 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7965
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7966 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7967 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7968 if (att_beg >= del_from)
7969 att_beg += delta;
7970 if (att_end >= del_from)
7971 att_end += delta;
7972 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7973 val_end += delta;
7974 next += delta;
7975 hdr_end += delta;
7976 hdr_next += delta;
7977 cur_hdr->len += delta;
7978 http_msg_move_end(&txn->req, delta);
7979 prev = del_from;
7980 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7981 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7982 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7983
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7984 /* continue with next cookie on this header line */
7985 att_beg = next;
7986 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7987
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7988 /* There are no more cookies on this line.
7989 * We may still have one (or several) marked for deletion at the
7990 * end of the line. We must do this now in two ways :
7991 * - if some cookies must be preserved, we only delete from the
7992 * mark to the end of line ;
7993 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7994 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7995 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7996 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7997 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7998 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7999 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8000 cur_hdr->len += delta;
8001 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8002 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8003
8004 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]8005 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8006 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8007 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8008 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8009 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]8010 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8011 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8012 }
8013
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]8014 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8015 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]8016 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8017}
8018
8019
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8020/* Iterate the same filter through all response headers contained in <rtr>.
8021 * Returns 1 if this filter can be stopped upon return, otherwise 0.
8022 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8023int 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]8024{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8025 char *cur_ptr, *cur_end, *cur_next;
8026 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8027 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8028 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8029 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8030
8031 last_hdr = 0;
8032
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8033 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8034 old_idx = 0;
8035
8036 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8037 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8038 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8039 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8040 (exp->action == ACT_ALLOW ||
8041 exp->action == ACT_DENY))
8042 return 0;
8043
8044 cur_idx = txn->hdr_idx.v[old_idx].next;
8045 if (!cur_idx)
8046 break;
8047
8048 cur_hdr = &txn->hdr_idx.v[cur_idx];
8049 cur_ptr = cur_next;
8050 cur_end = cur_ptr + cur_hdr->len;
8051 cur_next = cur_end + cur_hdr->cr + 1;
8052
8053 /* Now we have one header between cur_ptr and cur_end,
8054 * and the next header starts at cur_next.
8055 */
8056
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]8057 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]8058 switch (exp->action) {
8059 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8060 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8061 last_hdr = 1;
8062 break;
8063
8064 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8065 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8066 last_hdr = 1;
8067 break;
8068
8069 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8070 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
8071 if (trash.len < 0)
8072 return -1;
8073
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8074 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8075 /* FIXME: if the user adds a newline in the replacement, the
8076 * index will not be recalculated for now, and the new line
8077 * will not be counted as a new header.
8078 */
8079
8080 cur_end += delta;
8081 cur_next += delta;
8082 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8083 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8084 break;
8085
8086 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8087 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8088 cur_next += delta;
8089
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8090 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8091 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8092 txn->hdr_idx.used--;
8093 cur_hdr->len = 0;
8094 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8095 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8096 break;
8097
8098 }
8099 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8100
8101 /* keep the link from this header to next one in case of later
8102 * removal of next header.
8103 */
8104 old_idx = cur_idx;
8105 }
8106 return 0;
8107}
8108
8109
8110/* Apply the filter to the status line in the response buffer <rtr>.
8111 * Returns 0 if nothing has been done, 1 if the filter has been applied,
8112 * or -1 if a replacement resulted in an invalid status line.
8113 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8114int 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]8115{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8116 char *cur_ptr, *cur_end;
8117 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8118 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8119 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8120
8121
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8122 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8123 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8124 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8125 (exp->action == ACT_ALLOW ||
8126 exp->action == ACT_DENY))
8127 return 0;
8128 else if (exp->action == ACT_REMOVE)
8129 return 0;
8130
8131 done = 0;
8132
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8133 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]8134 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8135
8136 /* Now we have the status line between cur_ptr and cur_end */
8137
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]8138 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]8139 switch (exp->action) {
8140 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8141 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8142 done = 1;
8143 break;
8144
8145 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8146 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8147 done = 1;
8148 break;
8149
8150 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8151 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
8152 if (trash.len < 0)
8153 return -1;
8154
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8155 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8156 /* FIXME: if the user adds a newline in the replacement, the
8157 * index will not be recalculated for now, and the new line
8158 * will not be counted as a new header.
8159 */
8160
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8161 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8162 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8163 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]8164 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8165 cur_ptr, cur_end + 1,
8166 NULL, NULL);
8167 if (unlikely(!cur_end))
8168 return -1;
8169
8170 /* we have a full respnse and we know that we have either a CR
8171 * or an LF at <ptr>.
8172 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8173 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]8174 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]8175 /* there is no point trying this regex on headers */
8176 return 1;
8177 }
8178 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8179 return done;
8180}
8181
8182
8183
8184/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8185 * 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]8186 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
8187 * unparsable response.
8188 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8189int apply_filters_to_response(struct stream *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8190{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]8191 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8192 struct http_txn *txn = s->txn;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8193 struct hdr_exp *exp;
8194
8195 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8196 int ret;
8197
8198 /*
8199 * The interleaving of transformations and verdicts
8200 * makes it difficult to decide to continue or stop
8201 * the evaluation.
8202 */
8203
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8204 if (txn->flags & TX_SVDENY)
8205 break;
8206
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8207 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8208 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
8209 exp->action == ACT_PASS)) {
8210 exp = exp->next;
8211 continue;
8212 }
8213
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8214 /* if this filter had a condition, evaluate it now and skip to
8215 * next filter if the condition does not match.
8216 */
8217 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]8218 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]8219 ret = acl_pass(ret);
8220 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
8221 ret = !ret;
8222 if (!ret)
8223 continue;
8224 }
8225
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8226 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8227 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8228 if (unlikely(ret < 0))
8229 return -1;
8230
8231 if (likely(ret == 0)) {
8232 /* The filter did not match the response, it can be
8233 * iterated through all headers.
8234 */
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8235 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
8236 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8237 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8238 }
8239 return 0;
8240}
8241
8242
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8243/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]8244 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8245 * desirable to call it only when needed. This function is also used when we
8246 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8247 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8248void manage_server_side_cookies(struct stream *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8249{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8250 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8251 struct session *sess = s->sess;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8252 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8253 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8254 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8255 char *hdr_beg, *hdr_end, *hdr_next;
8256 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8257
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8258 /* Iterate through the headers.
8259 * we start with the start line.
8260 */
8261 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8262 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8263
8264 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
8265 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8266 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8267
8268 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8269 hdr_beg = hdr_next;
8270 hdr_end = hdr_beg + cur_hdr->len;
8271 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8272
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8273 /* We have one full header between hdr_beg and hdr_end, and the
8274 * next header starts at hdr_next. We're only interested in
8275 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8276 */
8277
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8278 is_cookie2 = 0;
8279 prev = hdr_beg + 10;
8280 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8281 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8282 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
8283 if (!val) {
8284 old_idx = cur_idx;
8285 continue;
8286 }
8287 is_cookie2 = 1;
8288 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8289 }
8290
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8291 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
8292 * <prev> points to the colon.
8293 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8294 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8295
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8296 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
8297 * check-cache is enabled) and we are not interested in checking
8298 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]8299 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]8300 if (s->be->cookie_name == NULL && sess->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8301 return;
8302
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8303 /* OK so now we know we have to process this response cookie.
8304 * The format of the Set-Cookie header is slightly different
8305 * from the format of the Cookie header in that it does not
8306 * support the comma as a cookie delimiter (thus the header
8307 * cannot be folded) because the Expires attribute described in
8308 * the original Netscape's spec may contain an unquoted date
8309 * with a comma inside. We have to live with this because
8310 * many browsers don't support Max-Age and some browsers don't
8311 * support quoted strings. However the Set-Cookie2 header is
8312 * clean.
8313 *
8314 * We have to keep multiple pointers in order to support cookie
8315 * removal at the beginning, middle or end of header without
8316 * corrupting the header (in case of set-cookie2). A special
8317 * pointer, <scav> points to the beginning of the set-cookie-av
8318 * fields after the first semi-colon. The <next> pointer points
8319 * either to the end of line (set-cookie) or next unquoted comma
8320 * (set-cookie2). All of these headers are valid :
8321 *
8322 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
8323 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8324 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8325 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
8326 * | | | | | | | | | |
8327 * | | | | | | | | +-> next hdr_end <--+
8328 * | | | | | | | +------------> scav
8329 * | | | | | | +--------------> val_end
8330 * | | | | | +--------------------> val_beg
8331 * | | | | +----------------------> equal
8332 * | | | +------------------------> att_end
8333 * | | +----------------------------> att_beg
8334 * | +------------------------------> prev
8335 * +-----------------------------------------> hdr_beg
8336 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8337
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8338 for (; prev < hdr_end; prev = next) {
8339 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8340
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8341 /* find att_beg */
8342 att_beg = prev + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]8343 while (att_beg < hdr_end && HTTP_IS_SPHT(*att_beg))
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8344 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8345
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8346 /* find att_end : this is the first character after the last non
8347 * space before the equal. It may be equal to hdr_end.
8348 */
8349 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8350
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8351 while (equal < hdr_end) {
8352 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
8353 break;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]8354 if (HTTP_IS_SPHT(*equal++))
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8355 continue;
8356 att_end = equal;
8357 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8358
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8359 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8360 * is between <att_beg> and <equal>, both may be identical.
8361 */
8362
8363 /* look for end of cookie if there is an equal sign */
8364 if (equal < hdr_end && *equal == '=') {
8365 /* look for the beginning of the value */
8366 val_beg = equal + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]8367 while (val_beg < hdr_end && HTTP_IS_SPHT(*val_beg))
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8368 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8369
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8370 /* find the end of the value, respecting quotes */
8371 next = find_cookie_value_end(val_beg, hdr_end);
8372
8373 /* make val_end point to the first white space or delimitor after the value */
8374 val_end = next;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]8375 while (val_end > val_beg && HTTP_IS_SPHT(*(val_end - 1)))
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8376 val_end--;
8377 } else {
8378 /* <equal> points to next comma, semi-colon or EOL */
8379 val_beg = val_end = next = equal;
8380 }
8381
8382 if (next < hdr_end) {
8383 /* Set-Cookie2 supports multiple cookies, and <next> points to
8384 * a colon or semi-colon before the end. So skip all attr-value
8385 * pairs and look for the next comma. For Set-Cookie, since
8386 * commas are permitted in values, skip to the end.
8387 */
8388 if (is_cookie2)
8389 next = find_hdr_value_end(next, hdr_end);
8390 else
8391 next = hdr_end;
8392 }
8393
8394 /* Now everything is as on the diagram above */
8395
8396 /* Ignore cookies with no equal sign */
8397 if (equal == val_end)
8398 continue;
8399
8400 /* If there are spaces around the equal sign, we need to
8401 * strip them otherwise we'll get trouble for cookie captures,
8402 * or even for rewrites. Since this happens extremely rarely,
8403 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8404 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8405 if (unlikely(att_end != equal || val_beg > equal + 1)) {
8406 int stripped_before = 0;
8407 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8408
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8409 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8410 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8411 equal += stripped_before;
8412 val_beg += stripped_before;
8413 }
8414
8415 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8416 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8417 val_beg += stripped_after;
8418 stripped_before += stripped_after;
8419 }
8420
8421 val_end += stripped_before;
8422 next += stripped_before;
8423 hdr_end += stripped_before;
8424 hdr_next += stripped_before;
8425 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]8426 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8427 }
8428
8429 /* First, let's see if we want to capture this cookie. We check
8430 * that we don't already have a server side cookie, because we
8431 * can only capture one. Also as an optimisation, we ignore
8432 * cookies shorter than the declared name.
8433 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8434 if (sess->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]8435 txn->srv_cookie == NULL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8436 (val_end - att_beg >= sess->fe->capture_namelen) &&
8437 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8438 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]8439 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8440 Alert("HTTP logging : out of memory.\n");
8441 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8442 else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8443 if (log_len > sess->fe->capture_len)
8444 log_len = sess->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8445 memcpy(txn->srv_cookie, att_beg, log_len);
8446 txn->srv_cookie[log_len] = 0;
8447 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8448 }
8449
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8450 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8451 /* now check if we need to process it for persistence */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8452 if (!(s->flags & SF_IGNORE_PRST) &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8453 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
8454 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8455 /* assume passive cookie by default */
8456 txn->flags &= ~TX_SCK_MASK;
8457 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8458
8459 /* If the cookie is in insert mode on a known server, we'll delete
8460 * this occurrence because we'll insert another one later.
8461 * 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]8462 * a direct access.
8463 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8464 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]8465 /* The "preserve" flag was set, we don't want to touch the
8466 * server's cookie.
8467 */
8468 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8469 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8470 ((s->flags & SF_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8471 /* this cookie must be deleted */
8472 if (*prev == ':' && next == hdr_end) {
8473 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8474 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8475 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8476 txn->hdr_idx.used--;
8477 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8478 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8479 hdr_next += delta;
8480 http_msg_move_end(&txn->rsp, delta);
8481 /* note: while both invalid now, <next> and <hdr_end>
8482 * are still equal, so the for() will stop as expected.
8483 */
8484 } else {
8485 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8486 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8487 next = prev;
8488 hdr_end += delta;
8489 hdr_next += delta;
8490 cur_hdr->len += delta;
8491 http_msg_move_end(&txn->rsp, delta);
8492 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8493 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8494 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8495 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8496 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8497 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8498 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8499 * with this server since we know it.
8500 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8501 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8502 next += delta;
8503 hdr_end += delta;
8504 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8505 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8506 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8507
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8508 txn->flags &= ~TX_SCK_MASK;
8509 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8510 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8511 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8512 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8513 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8514 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8515 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8516 next += delta;
8517 hdr_end += delta;
8518 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8519 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8520 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8521
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8522 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8523 txn->flags &= ~TX_SCK_MASK;
8524 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8525 }
8526 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8527 /* that's done for this cookie, check the next one on the same
8528 * line when next != hdr_end (only if is_cookie2).
8529 */
8530 }
8531 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8532 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8533 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8534}
8535
8536
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8537/*
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8538 * Check if response is cacheable or not. Updates s->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8539 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8540void check_response_for_cacheability(struct stream *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8541{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8542 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8543 char *p1, *p2;
8544
8545 char *cur_ptr, *cur_end, *cur_next;
8546 int cur_idx;
8547
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]8548 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8549 return;
8550
8551 /* Iterate through the headers.
8552 * we start with the start line.
8553 */
8554 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8555 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8556
8557 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
8558 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8559 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8560
8561 cur_hdr = &txn->hdr_idx.v[cur_idx];
8562 cur_ptr = cur_next;
8563 cur_end = cur_ptr + cur_hdr->len;
8564 cur_next = cur_end + cur_hdr->cr + 1;
8565
8566 /* We have one full header between cur_ptr and cur_end, and the
8567 * next header starts at cur_next. We're only interested in
8568 * "Cookie:" headers.
8569 */
8570
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8571 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
8572 if (val) {
8573 if ((cur_end - (cur_ptr + val) >= 8) &&
8574 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
8575 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
8576 return;
8577 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8578 }
8579
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8580 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
8581 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8582 continue;
8583
8584 /* OK, right now we know we have a cache-control header at cur_ptr */
8585
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8586 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8587
8588 if (p1 >= cur_end) /* no more info */
8589 continue;
8590
8591 /* p1 is at the beginning of the value */
8592 p2 = p1;
8593
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]8594 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8595 p2++;
8596
8597 /* we have a complete value between p1 and p2 */
8598 if (p2 < cur_end && *p2 == '=') {
8599 /* we have something of the form no-cache="set-cookie" */
8600 if ((cur_end - p1 >= 21) &&
8601 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
8602 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8603 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8604 continue;
8605 }
8606
8607 /* OK, so we know that either p2 points to the end of string or to a comma */
8608 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8609 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8610 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8611 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8612 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8613 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8614 return;
8615 }
8616
8617 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8618 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8619 continue;
8620 }
8621 }
8622}
8623
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8624
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8625/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8626 * 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]8627 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8628 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8629 * 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]8630 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8631 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8632 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8633 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8634int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8635{
8636 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8637 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8638 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8639
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8640 if (!uri_auth)
8641 return 0;
8642
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8643 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]8644 return 0;
8645
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8646 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8647 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8648 return 0;
8649
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8650 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8651 return 0;
8652
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8653 return 1;
8654}
8655
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8656/*
8657 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8658 * By default it tries to report the error position as msg->err_pos. However if
8659 * this one is not set, it will then report msg->next, which is the last known
8660 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8661 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8662 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8663void http_capture_bad_message(struct error_snapshot *es, struct stream *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8664 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8665 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8666{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8667 struct session *sess = strm_sess(s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8668 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8669 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8670
Willy Tarreauf3764b72016-03-31 13:45:10 +0200[diff] [blame]8671 es->len = MIN(chn->buf->i, global.tune.bufsize);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8672 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8673 len1 = MIN(len1, es->len);
8674 len2 = es->len - len1; /* remaining data if buffer wraps */
8675
Willy Tarreauf3764b72016-03-31 13:45:10 +0200[diff] [blame]8676 if (!es->buf)
8677 es->buf = malloc(global.tune.bufsize);
8678
8679 if (es->buf) {
8680 memcpy(es->buf, chn->buf->p, len1);
8681 if (len2)
8682 memcpy(es->buf + len1, chn->buf->data, len2);
8683 }
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8684
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8685 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8686 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8687 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8688 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8689
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8690 es->when = date; // user-visible date
8691 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8692 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8693 es->oe = other_end;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8694 if (objt_conn(sess->origin))
8695 es->src = __objt_conn(sess->origin)->addr.from;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8696 else
8697 memset(&es->src, 0, sizeof(es->src));
8698
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8699 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8700 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8701 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8702 es->s_flags = s->flags;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8703 es->t_flags = s->txn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8704 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8705 es->b_out = chn->buf->o;
8706 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8707 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8708 es->m_clen = msg->chunk_len;
8709 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8710}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8711
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8712/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8713 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8714 * performed over the whole headers. Otherwise it must contain a valid header
8715 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8716 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8717 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8718 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8719 * -1. The value fetch stops at commas, so this function is suited for use with
8720 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8721 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8722 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8723unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8724 struct hdr_idx *idx, int occ,
8725 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8726{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8727 struct hdr_ctx local_ctx;
8728 char *ptr_hist[MAX_HDR_HISTORY];
8729 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8730 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8731 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8732
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8733 if (!ctx) {
8734 local_ctx.idx = 0;
8735 ctx = &local_ctx;
8736 }
8737
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8738 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8739 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8740 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8741 occ--;
8742 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8743 *vptr = ctx->line + ctx->val;
8744 *vlen = ctx->vlen;
8745 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8746 }
8747 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8748 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8749 }
8750
8751 /* negative occurrence, we scan all the list then walk back */
8752 if (-occ > MAX_HDR_HISTORY)
8753 return 0;
8754
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8755 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8756 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8757 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8758 len_hist[hist_ptr] = ctx->vlen;
8759 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8760 hist_ptr = 0;
8761 found++;
8762 }
8763 if (-occ > found)
8764 return 0;
8765 /* 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]8766 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8767 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8768 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8769 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8770 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8771 if (hist_ptr >= MAX_HDR_HISTORY)
8772 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8773 *vptr = ptr_hist[hist_ptr];
8774 *vlen = len_hist[hist_ptr];
8775 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8776}
8777
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8778/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8779 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8780 * performed over the whole headers. Otherwise it must contain a valid header
8781 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8782 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8783 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8784 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8785 * -1. This function differs from http_get_hdr() in that it only returns full
8786 * line header values and does not stop at commas.
8787 * The return value is 0 if nothing was found, or non-zero otherwise.
8788 */
8789unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8790 struct hdr_idx *idx, int occ,
8791 struct hdr_ctx *ctx, char **vptr, int *vlen)
8792{
8793 struct hdr_ctx local_ctx;
8794 char *ptr_hist[MAX_HDR_HISTORY];
8795 int len_hist[MAX_HDR_HISTORY];
8796 unsigned int hist_ptr;
8797 int found;
8798
8799 if (!ctx) {
8800 local_ctx.idx = 0;
8801 ctx = &local_ctx;
8802 }
8803
8804 if (occ >= 0) {
8805 /* search from the beginning */
8806 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8807 occ--;
8808 if (occ <= 0) {
8809 *vptr = ctx->line + ctx->val;
8810 *vlen = ctx->vlen;
8811 return 1;
8812 }
8813 }
8814 return 0;
8815 }
8816
8817 /* negative occurrence, we scan all the list then walk back */
8818 if (-occ > MAX_HDR_HISTORY)
8819 return 0;
8820
8821 found = hist_ptr = 0;
8822 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8823 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8824 len_hist[hist_ptr] = ctx->vlen;
8825 if (++hist_ptr >= MAX_HDR_HISTORY)
8826 hist_ptr = 0;
8827 found++;
8828 }
8829 if (-occ > found)
8830 return 0;
Nenad Merdanovic69ad4b92016-03-29 13:14:30 +0200[diff] [blame]8831
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8832 /* 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]8833 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8834 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8835 * to remain in the 0..9 range.
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8836 */
Nenad Merdanovic69ad4b92016-03-29 13:14:30 +0200[diff] [blame]8837 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8838 if (hist_ptr >= MAX_HDR_HISTORY)
8839 hist_ptr -= MAX_HDR_HISTORY;
8840 *vptr = ptr_hist[hist_ptr];
8841 *vlen = len_hist[hist_ptr];
8842 return 1;
8843}
8844
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8845/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8846 * Print a debug line with a header. Always stop at the first CR or LF char,
8847 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8848 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8849 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8850void debug_hdr(const char *dir, struct stream *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8851{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8852 struct session *sess = strm_sess(s);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8853 int max;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8854
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8855 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8856 dir,
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8857 objt_conn(sess->origin) ? (unsigned short)objt_conn(sess->origin)->t.sock.fd : -1,
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]8858 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]8859
8860 for (max = 0; start + max < end; max++)
8861 if (start[max] == '\r' || start[max] == '\n')
8862 break;
8863
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8864 UBOUND(max, trash.size - trash.len - 3);
8865 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8866 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8867 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8868}
8869
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8870
8871/* Allocate a new HTTP transaction for stream <s> unless there is one already.
8872 * The hdr_idx is allocated as well. In case of allocation failure, everything
8873 * allocated is freed and NULL is returned. Otherwise the new transaction is
8874 * assigned to the stream and returned.
8875 */
8876struct http_txn *http_alloc_txn(struct stream *s)
8877{
8878 struct http_txn *txn = s->txn;
8879
8880 if (txn)
8881 return txn;
8882
8883 txn = pool_alloc2(pool2_http_txn);
8884 if (!txn)
8885 return txn;
8886
8887 txn->hdr_idx.size = global.tune.max_http_hdr;
8888 txn->hdr_idx.v = pool_alloc2(pool2_hdr_idx);
8889 if (!txn->hdr_idx.v) {
8890 pool_free2(pool2_http_txn, txn);
8891 return NULL;
8892 }
8893
8894 s->txn = txn;
8895 return txn;
8896}
8897
Thierry FOURNIERfd50f0b2015-09-25 18:53:18 +0200[diff] [blame]8898void http_txn_reset_req(struct http_txn *txn)
8899{
8900 txn->req.flags = 0;
8901 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
8902 txn->req.next = 0;
8903 txn->req.chunk_len = 0LL;
8904 txn->req.body_len = 0LL;
8905 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8906}
8907
8908void http_txn_reset_res(struct http_txn *txn)
8909{
8910 txn->rsp.flags = 0;
8911 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
8912 txn->rsp.next = 0;
8913 txn->rsp.chunk_len = 0LL;
8914 txn->rsp.body_len = 0LL;
8915 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
8916}
8917
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8918/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8919 * Initialize a new HTTP transaction for stream <s>. It is assumed that all
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8920 * the required fields are properly allocated and that we only need to (re)init
8921 * them. This should be used before processing any new request.
8922 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8923void http_init_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8924{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8925 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8926 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8927
8928 txn->flags = 0;
8929 txn->status = -1;
8930
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8931 txn->cookie_first_date = 0;
8932 txn->cookie_last_date = 0;
8933
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8934 txn->srv_cookie = NULL;
8935 txn->cli_cookie = NULL;
8936 txn->uri = NULL;
8937
Thierry FOURNIERfd50f0b2015-09-25 18:53:18 +0200[diff] [blame]8938 http_txn_reset_req(txn);
8939 http_txn_reset_res(txn);
8940
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8941 txn->req.chn = &s->req;
8942 txn->rsp.chn = &s->res;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8943
8944 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8945
8946 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8947 if (fe->options2 & PR_O2_REQBUG_OK)
8948 txn->req.err_pos = -1; /* let buggy requests pass */
8949
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8950 if (txn->hdr_idx.v)
8951 hdr_idx_init(&txn->hdr_idx);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]8952
8953 vars_init(&s->vars_txn, SCOPE_TXN);
8954 vars_init(&s->vars_reqres, SCOPE_REQ);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8955}
8956
8957/* to be used at the end of a transaction */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8958void http_end_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8959{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8960 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8961 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8962
8963 /* these ones will have been dynamically allocated */
8964 pool_free2(pool2_requri, txn->uri);
8965 pool_free2(pool2_capture, txn->cli_cookie);
8966 pool_free2(pool2_capture, txn->srv_cookie);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8967 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8968
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8969 s->unique_id = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8970 txn->uri = NULL;
8971 txn->srv_cookie = NULL;
8972 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8973
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8974 if (s->req_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8975 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8976 for (h = fe->req_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8977 pool_free2(h->pool, s->req_cap[h->index]);
8978 memset(s->req_cap, 0, fe->nb_req_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8979 }
8980
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8981 if (s->res_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8982 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8983 for (h = fe->rsp_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8984 pool_free2(h->pool, s->res_cap[h->index]);
8985 memset(s->res_cap, 0, fe->nb_rsp_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8986 }
8987
Willy Tarreau6204cd92016-03-10 16:33:04 +0100[diff] [blame]8988 vars_prune(&s->vars_txn, s->sess, s);
8989 vars_prune(&s->vars_reqres, s->sess, s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8990}
8991
8992/* to be used at the end of a transaction to prepare a new one */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8993void http_reset_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8994{
8995 http_end_txn(s);
8996 http_init_txn(s);
8997
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]8998 /* reinitialise the current rule list pointer to NULL. We are sure that
8999 * any rulelist match the NULL pointer.
9000 */
9001 s->current_rule_list = NULL;
9002
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9003 s->be = strm_fe(s);
9004 s->logs.logwait = strm_fe(s)->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]9005 s->logs.level = 0;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]9006 stream_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]9007 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]9008 /* re-init store persistence */
9009 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]9010 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]9011
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9012 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9013
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9014 s->req.flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9015
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]9016 /* We must trim any excess data from the response buffer, because we
9017 * may have blocked an invalid response from a server that we don't
9018 * want to accidentely forward once we disable the analysers, nor do
9019 * we want those data to come along with next response. A typical
9020 * example of such data would be from a buggy server responding to
9021 * a HEAD with some data, or sending more than the advertised
9022 * content-length.
9023 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9024 if (unlikely(s->res.buf->i))
9025 s->res.buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]9026
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9027 s->req.rto = strm_fe(s)->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9028 s->req.wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9029
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9030 s->res.rto = TICK_ETERNITY;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9031 s->res.wto = strm_fe(s)->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9032
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9033 s->req.rex = TICK_ETERNITY;
9034 s->req.wex = TICK_ETERNITY;
9035 s->req.analyse_exp = TICK_ETERNITY;
9036 s->res.rex = TICK_ETERNITY;
9037 s->res.wex = TICK_ETERNITY;
9038 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9039}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]9040
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9041void free_http_res_rules(struct list *r)
9042{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9043 struct act_rule *tr, *pr;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9044
9045 list_for_each_entry_safe(pr, tr, r, list) {
9046 LIST_DEL(&pr->list);
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9047 regex_free(&pr->arg.hdr_add.re);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9048 free(pr);
9049 }
9050}
9051
9052void free_http_req_rules(struct list *r)
9053{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9054 struct act_rule *tr, *pr;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9055
9056 list_for_each_entry_safe(pr, tr, r, list) {
9057 LIST_DEL(&pr->list);
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9058 if (pr->action == ACT_HTTP_REQ_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9059 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9060
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9061 regex_free(&pr->arg.hdr_add.re);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9062 free(pr);
9063 }
9064}
9065
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9066/* parse an "http-request" rule */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9067struct 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]9068{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9069 struct act_rule *rule;
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]9070 struct action_kw *custom = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9071 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9072 char *error;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9073
Vincent Bernat02779b62016-04-03 13:48:43 +0200[diff] [blame]9074 rule = calloc(1, sizeof(*rule));
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9075 if (!rule) {
9076 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9077 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9078 }
9079
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9080 if (!strcmp(args[0], "allow")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9081 rule->action = ACT_ACTION_ALLOW;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9082 cur_arg = 1;
Jarno Huuskonen800d1762017-03-06 14:56:36 +0200[diff] [blame]9083 } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block") || !strcmp(args[0], "tarpit")) {
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9084 int code;
9085 int hc;
9086
Jarno Huuskonen800d1762017-03-06 14:56:36 +0200[diff] [blame]9087 if (!strcmp(args[0], "tarpit")) {
9088 rule->action = ACT_HTTP_REQ_TARPIT;
9089 rule->deny_status = HTTP_ERR_500;
9090 }
9091 else {
9092 rule->action = ACT_ACTION_DENY;
9093 rule->deny_status = HTTP_ERR_403;
9094 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9095 cur_arg = 1;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9096 if (strcmp(args[cur_arg], "deny_status") == 0) {
9097 cur_arg++;
9098 if (!args[cur_arg]) {
9099 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing status code.\n",
9100 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9101 goto out_err;
9102 }
9103
9104 code = atol(args[cur_arg]);
9105 cur_arg++;
9106 for (hc = 0; hc < HTTP_ERR_SIZE; hc++) {
9107 if (http_err_codes[hc] == code) {
9108 rule->deny_status = hc;
9109 break;
9110 }
9111 }
9112
9113 if (hc >= HTTP_ERR_SIZE) {
Jarno Huuskonen800d1762017-03-06 14:56:36 +0200[diff] [blame]9114 Warning("parsing [%s:%d] : status code %d not handled, using default code %d.\n",
9115 file, linenum, code, http_err_codes[rule->deny_status]);
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9116 }
9117 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9118 } else if (!strcmp(args[0], "auth")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9119 rule->action = ACT_HTTP_REQ_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9120 cur_arg = 1;
9121
9122 while(*args[cur_arg]) {
9123 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9124 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9125 cur_arg+=2;
9126 continue;
9127 } else
9128 break;
9129 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9130 } else if (!strcmp(args[0], "set-nice")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9131 rule->action = ACT_HTTP_SET_NICE;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9132 cur_arg = 1;
9133
9134 if (!*args[cur_arg] ||
9135 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9136 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
9137 file, linenum, args[0]);
9138 goto out_err;
9139 }
9140 rule->arg.nice = atoi(args[cur_arg]);
9141 if (rule->arg.nice < -1024)
9142 rule->arg.nice = -1024;
9143 else if (rule->arg.nice > 1024)
9144 rule->arg.nice = 1024;
9145 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9146 } else if (!strcmp(args[0], "set-tos")) {
9147#ifdef IP_TOS
9148 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9149 rule->action = ACT_HTTP_SET_TOS;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9150 cur_arg = 1;
9151
9152 if (!*args[cur_arg] ||
9153 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9154 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
9155 file, linenum, args[0]);
9156 goto out_err;
9157 }
9158
9159 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9160 if (err && *err != '\0') {
9161 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
9162 file, linenum, err, args[0]);
9163 goto out_err;
9164 }
9165 cur_arg++;
9166#else
9167 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9168 goto out_err;
9169#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9170 } else if (!strcmp(args[0], "set-mark")) {
9171#ifdef SO_MARK
9172 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9173 rule->action = ACT_HTTP_SET_MARK;
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9174 cur_arg = 1;
9175
9176 if (!*args[cur_arg] ||
9177 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9178 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
9179 file, linenum, args[0]);
9180 goto out_err;
9181 }
9182
9183 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9184 if (err && *err != '\0') {
9185 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
9186 file, linenum, err, args[0]);
9187 goto out_err;
9188 }
9189 cur_arg++;
9190 global.last_checks |= LSTCHK_NETADM;
9191#else
9192 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9193 goto out_err;
9194#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9195 } else if (!strcmp(args[0], "set-log-level")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9196 rule->action = ACT_HTTP_SET_LOGL;
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9197 cur_arg = 1;
9198
9199 if (!*args[cur_arg] ||
9200 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9201 bad_log_level:
9202 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
9203 file, linenum, args[0]);
9204 goto out_err;
9205 }
9206 if (strcmp(args[cur_arg], "silent") == 0)
9207 rule->arg.loglevel = -1;
9208 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
9209 goto bad_log_level;
9210 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9211 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9212 rule->action = *args[0] == 'a' ? ACT_HTTP_ADD_HDR : ACT_HTTP_SET_HDR;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9213 cur_arg = 1;
9214
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]9215 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9216 (*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]9217 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9218 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9219 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9220 }
9221
9222 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9223 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9224 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]9225
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9226 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9227 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9228 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]9229 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9230 Alert("parsing [%s:%d]: 'http-request %s': %s.\n",
9231 file, linenum, args[0], error);
9232 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9233 goto out_err;
9234 }
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9235 free(proxy->conf.lfs_file);
9236 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9237 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9238 cur_arg += 2;
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9239 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9240 rule->action = args[0][8] == 'h' ? ACT_HTTP_REPLACE_HDR : ACT_HTTP_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9241 cur_arg = 1;
9242
9243 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann92df3702014-06-24 11:10:00 +0200[diff] [blame]9244 (*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]9245 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
9246 file, linenum, args[0]);
9247 goto out_err;
9248 }
9249
9250 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9251 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9252 LIST_INIT(&rule->arg.hdr_add.fmt);
9253
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9254 error = NULL;
9255 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9256 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9257 args[cur_arg + 1], error);
9258 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9259 goto out_err;
9260 }
9261
9262 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9263 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9264 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]9265 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9266 Alert("parsing [%s:%d]: 'http-request %s': %s.\n",
9267 file, linenum, args[0], error);
9268 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9269 goto out_err;
9270 }
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9271
9272 free(proxy->conf.lfs_file);
9273 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9274 proxy->conf.lfs_line = proxy->conf.args.line;
9275 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9276 } else if (strcmp(args[0], "del-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9277 rule->action = ACT_HTTP_DEL_HDR;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9278 cur_arg = 1;
9279
9280 if (!*args[cur_arg] ||
9281 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9282 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9283 file, linenum, args[0]);
9284 goto out_err;
9285 }
9286
9287 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9288 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9289
9290 proxy->conf.args.ctx = ARGC_HRQ;
9291 free(proxy->conf.lfs_file);
9292 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9293 proxy->conf.lfs_line = proxy->conf.args.line;
9294 cur_arg += 1;
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9295 } else if (strncmp(args[0], "track-sc", 8) == 0 &&
9296 args[0][9] == '\0' && args[0][8] >= '0' &&
Willy Tarreaue1cfc1f2014-10-17 11:53:05 +0200[diff] [blame]9297 args[0][8] < '0' + MAX_SESS_STKCTR) { /* track-sc 0..9 */
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9298 struct sample_expr *expr;
9299 unsigned int where;
9300 char *err = NULL;
9301
9302 cur_arg = 1;
9303 proxy->conf.args.ctx = ARGC_TRK;
9304
9305 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9306 if (!expr) {
9307 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9308 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9309 free(err);
9310 goto out_err;
9311 }
9312
9313 where = 0;
9314 if (proxy->cap & PR_CAP_FE)
9315 where |= SMP_VAL_FE_HRQ_HDR;
9316 if (proxy->cap & PR_CAP_BE)
9317 where |= SMP_VAL_BE_HRQ_HDR;
9318
9319 if (!(expr->fetch->val & where)) {
9320 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule :"
9321 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9322 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9323 args[cur_arg-1], sample_src_names(expr->fetch->use));
9324 free(expr);
9325 goto out_err;
9326 }
9327
9328 if (strcmp(args[cur_arg], "table") == 0) {
9329 cur_arg++;
9330 if (!args[cur_arg]) {
9331 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing table name.\n",
9332 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9333 free(expr);
9334 goto out_err;
9335 }
9336 /* we copy the table name for now, it will be resolved later */
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]9337 rule->arg.trk_ctr.table.n = strdup(args[cur_arg]);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9338 cur_arg++;
9339 }
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]9340 rule->arg.trk_ctr.expr = expr;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9341 rule->action = ACT_ACTION_TRK_SC0 + args[0][8] - '0';
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9342 } else if (strcmp(args[0], "redirect") == 0) {
9343 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]9344 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9345
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9346 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]9347 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9348 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9349 goto out_err;
9350 }
9351
9352 /* this redirect rule might already contain a parsed condition which
9353 * we'll pass to the http-request rule.
9354 */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9355 rule->action = ACT_HTTP_REDIR;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9356 rule->arg.redir = redir;
9357 rule->cond = redir->cond;
9358 redir->cond = NULL;
9359 cur_arg = 2;
9360 return rule;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9361 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9362 /* http-request add-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9363 rule->action = ACT_HTTP_ADD_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9364 /*
9365 * '+ 8' for 'add-acl('
9366 * '- 9' for 'add-acl(' + trailing ')'
9367 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9368 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9369
9370 cur_arg = 1;
9371
9372 if (!*args[cur_arg] ||
9373 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9374 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9375 file, linenum, args[0]);
9376 goto out_err;
9377 }
9378
9379 LIST_INIT(&rule->arg.map.key);
9380 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9381 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9382 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]9383 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9384 Alert("parsing [%s:%d]: 'http-request %s': %s.\n",
9385 file, linenum, args[0], error);
9386 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9387 goto out_err;
9388 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9389 free(proxy->conf.lfs_file);
9390 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9391 proxy->conf.lfs_line = proxy->conf.args.line;
9392 cur_arg += 1;
9393 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9394 /* http-request del-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9395 rule->action = ACT_HTTP_DEL_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9396 /*
9397 * '+ 8' for 'del-acl('
9398 * '- 9' for 'del-acl(' + trailing ')'
9399 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9400 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9401
9402 cur_arg = 1;
9403
9404 if (!*args[cur_arg] ||
9405 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9406 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9407 file, linenum, args[0]);
9408 goto out_err;
9409 }
9410
9411 LIST_INIT(&rule->arg.map.key);
9412 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9413 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9414 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]9415 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9416 Alert("parsing [%s:%d]: 'http-request %s': %s.\n",
9417 file, linenum, args[0], error);
9418 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9419 goto out_err;
9420 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9421 free(proxy->conf.lfs_file);
9422 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9423 proxy->conf.lfs_line = proxy->conf.args.line;
9424 cur_arg += 1;
9425 } else if (strncmp(args[0], "del-map", 7) == 0) {
9426 /* http-request del-map(<reference (map name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9427 rule->action = ACT_HTTP_DEL_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9428 /*
9429 * '+ 8' for 'del-map('
9430 * '- 9' for 'del-map(' + trailing ')'
9431 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9432 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9433
9434 cur_arg = 1;
9435
9436 if (!*args[cur_arg] ||
9437 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9438 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9439 file, linenum, args[0]);
9440 goto out_err;
9441 }
9442
9443 LIST_INIT(&rule->arg.map.key);
9444 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9445 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9446 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]9447 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9448 Alert("parsing [%s:%d]: 'http-request %s': %s.\n",
9449 file, linenum, args[0], error);
9450 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9451 goto out_err;
9452 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9453 free(proxy->conf.lfs_file);
9454 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9455 proxy->conf.lfs_line = proxy->conf.args.line;
9456 cur_arg += 1;
9457 } else if (strncmp(args[0], "set-map", 7) == 0) {
9458 /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9459 rule->action = ACT_HTTP_SET_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9460 /*
9461 * '+ 8' for 'set-map('
9462 * '- 9' for 'set-map(' + trailing ')'
9463 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9464 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9465
9466 cur_arg = 1;
9467
9468 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9469 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9470 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9471 file, linenum, args[0]);
9472 goto out_err;
9473 }
9474
9475 LIST_INIT(&rule->arg.map.key);
9476 LIST_INIT(&rule->arg.map.value);
9477 proxy->conf.args.ctx = ARGC_HRQ;
9478
9479 /* key pattern */
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9480 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9481 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]9482 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9483 Alert("parsing [%s:%d]: 'http-request %s' key: %s.\n",
9484 file, linenum, args[0], error);
9485 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9486 goto out_err;
9487 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9488
9489 /* value pattern */
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9490 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9491 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]9492 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR, &error)) {
9493 Alert("parsing [%s:%d]: 'http-request %s' pattern: %s.\n",
9494 file, linenum, args[0], error);
9495 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9496 goto out_err;
9497 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9498 free(proxy->conf.lfs_file);
9499 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9500 proxy->conf.lfs_line = proxy->conf.args.line;
9501
9502 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9503 } else if (((custom = action_http_req_custom(args[0])) != NULL)) {
9504 char *errmsg = NULL;
9505 cur_arg = 1;
9506 /* try in the module list */
Thierry FOURNIER5563e4b2015-08-14 19:20:07 +0200[diff] [blame]9507 rule->from = ACT_F_HTTP_REQ;
Thierry FOURNIER85c6c972015-09-22 19:14:35 +0200[diff] [blame]9508 rule->kw = custom;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]9509 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) == ACT_RET_PRS_ERR) {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9510 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9511 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9512 free(errmsg);
9513 goto out_err;
9514 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9515 } else {
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9516 action_build_list(&http_req_keywords.list, &trash);
9517 Alert("parsing [%s:%d]: 'http-request' expects 'allow', 'deny', 'auth', 'redirect', "
9518 "'tarpit', 'add-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', "
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]9519 "'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]9520 "%s%s, but got '%s'%s.\n",
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9521 file, linenum, *trash.str ? ", " : "", trash.str, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9522 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9523 }
9524
9525 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9526 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9527 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9528
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9529 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9530 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
9531 file, linenum, args[0], errmsg);
9532 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9533 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9534 }
9535 rule->cond = cond;
9536 }
9537 else if (*args[cur_arg]) {
9538 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
9539 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9540 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9541 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9542 }
9543
9544 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9545 out_err:
9546 free(rule);
9547 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9548}
9549
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9550/* parse an "http-respose" rule */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9551struct 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]9552{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9553 struct act_rule *rule;
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]9554 struct action_kw *custom = NULL;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9555 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9556 char *error;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9557
9558 rule = calloc(1, sizeof(*rule));
9559 if (!rule) {
9560 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
9561 goto out_err;
9562 }
9563
9564 if (!strcmp(args[0], "allow")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9565 rule->action = ACT_ACTION_ALLOW;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9566 cur_arg = 1;
9567 } else if (!strcmp(args[0], "deny")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9568 rule->action = ACT_ACTION_DENY;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9569 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9570 } else if (!strcmp(args[0], "set-nice")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9571 rule->action = ACT_HTTP_SET_NICE;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9572 cur_arg = 1;
9573
9574 if (!*args[cur_arg] ||
9575 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9576 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
9577 file, linenum, args[0]);
9578 goto out_err;
9579 }
9580 rule->arg.nice = atoi(args[cur_arg]);
9581 if (rule->arg.nice < -1024)
9582 rule->arg.nice = -1024;
9583 else if (rule->arg.nice > 1024)
9584 rule->arg.nice = 1024;
9585 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9586 } else if (!strcmp(args[0], "set-tos")) {
9587#ifdef IP_TOS
9588 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9589 rule->action = ACT_HTTP_SET_TOS;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9590 cur_arg = 1;
9591
9592 if (!*args[cur_arg] ||
9593 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9594 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9595 file, linenum, args[0]);
9596 goto out_err;
9597 }
9598
9599 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9600 if (err && *err != '\0') {
9601 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9602 file, linenum, err, args[0]);
9603 goto out_err;
9604 }
9605 cur_arg++;
9606#else
9607 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9608 goto out_err;
9609#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9610 } else if (!strcmp(args[0], "set-mark")) {
9611#ifdef SO_MARK
9612 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9613 rule->action = ACT_HTTP_SET_MARK;
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9614 cur_arg = 1;
9615
9616 if (!*args[cur_arg] ||
9617 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9618 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9619 file, linenum, args[0]);
9620 goto out_err;
9621 }
9622
9623 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9624 if (err && *err != '\0') {
9625 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9626 file, linenum, err, args[0]);
9627 goto out_err;
9628 }
9629 cur_arg++;
9630 global.last_checks |= LSTCHK_NETADM;
9631#else
9632 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9633 goto out_err;
9634#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9635 } else if (!strcmp(args[0], "set-log-level")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9636 rule->action = ACT_HTTP_SET_LOGL;
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9637 cur_arg = 1;
9638
9639 if (!*args[cur_arg] ||
9640 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9641 bad_log_level:
9642 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
9643 file, linenum, args[0]);
9644 goto out_err;
9645 }
9646 if (strcmp(args[cur_arg], "silent") == 0)
9647 rule->arg.loglevel = -1;
Ruoshan Huangdd016782016-06-15 22:16:03 +0800[diff] [blame]9648 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9649 goto bad_log_level;
9650 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9651 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9652 rule->action = *args[0] == 'a' ? ACT_HTTP_ADD_HDR : ACT_HTTP_SET_HDR;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9653 cur_arg = 1;
9654
9655 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9656 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9657 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9658 file, linenum, args[0]);
9659 goto out_err;
9660 }
9661
9662 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9663 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9664 LIST_INIT(&rule->arg.hdr_add.fmt);
9665
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9666 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9667 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9668 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]9669 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9670 Alert("parsing [%s:%d]: 'http-response %s': %s.\n",
9671 file, linenum, args[0], error);
9672 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9673 goto out_err;
9674 }
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9675 free(proxy->conf.lfs_file);
9676 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9677 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9678 cur_arg += 2;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9679 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9680 rule->action = args[0][8] == 'h' ? ACT_HTTP_REPLACE_HDR : ACT_HTTP_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9681 cur_arg = 1;
9682
9683 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann12cb00b2014-08-08 17:29:06 +0200[diff] [blame]9684 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
9685 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 3 arguments.\n",
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9686 file, linenum, args[0]);
9687 goto out_err;
9688 }
9689
9690 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9691 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9692 LIST_INIT(&rule->arg.hdr_add.fmt);
9693
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9694 error = NULL;
9695 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9696 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9697 args[cur_arg + 1], error);
9698 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9699 goto out_err;
9700 }
9701
9702 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9703 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9704 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]9705 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9706 Alert("parsing [%s:%d]: 'http-response %s': %s.\n",
9707 file, linenum, args[0], error);
9708 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9709 goto out_err;
9710 }
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9711
9712 free(proxy->conf.lfs_file);
9713 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9714 proxy->conf.lfs_line = proxy->conf.args.line;
9715 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9716 } else if (strcmp(args[0], "del-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9717 rule->action = ACT_HTTP_DEL_HDR;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9718 cur_arg = 1;
9719
9720 if (!*args[cur_arg] ||
9721 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9722 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9723 file, linenum, args[0]);
9724 goto out_err;
9725 }
9726
9727 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9728 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9729
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9730 proxy->conf.args.ctx = ARGC_HRS;
9731 free(proxy->conf.lfs_file);
9732 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9733 proxy->conf.lfs_line = proxy->conf.args.line;
9734 cur_arg += 1;
9735 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9736 /* http-request add-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9737 rule->action = ACT_HTTP_ADD_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9738 /*
9739 * '+ 8' for 'add-acl('
9740 * '- 9' for 'add-acl(' + trailing ')'
9741 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9742 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9743
9744 cur_arg = 1;
9745
9746 if (!*args[cur_arg] ||
9747 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9748 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9749 file, linenum, args[0]);
9750 goto out_err;
9751 }
9752
9753 LIST_INIT(&rule->arg.map.key);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9754 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9755 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9756 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]9757 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9758 Alert("parsing [%s:%d]: 'http-response %s': %s.\n",
9759 file, linenum, args[0], error);
9760 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9761 goto out_err;
9762 }
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9763 free(proxy->conf.lfs_file);
9764 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9765 proxy->conf.lfs_line = proxy->conf.args.line;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9766
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9767 cur_arg += 1;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9768 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9769 /* http-response del-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9770 rule->action = ACT_HTTP_DEL_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9771 /*
9772 * '+ 8' for 'del-acl('
9773 * '- 9' for 'del-acl(' + trailing ')'
9774 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9775 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9776
9777 cur_arg = 1;
9778
9779 if (!*args[cur_arg] ||
9780 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9781 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9782 file, linenum, args[0]);
9783 goto out_err;
9784 }
9785
9786 LIST_INIT(&rule->arg.map.key);
9787 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9788 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9789 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]9790 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9791 Alert("parsing [%s:%d]: 'http-response %s': %s.\n",
9792 file, linenum, args[0], error);
9793 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9794 goto out_err;
9795 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9796 free(proxy->conf.lfs_file);
9797 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9798 proxy->conf.lfs_line = proxy->conf.args.line;
9799 cur_arg += 1;
9800 } else if (strncmp(args[0], "del-map", 7) == 0) {
9801 /* http-response del-map(<reference (map name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9802 rule->action = ACT_HTTP_DEL_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9803 /*
9804 * '+ 8' for 'del-map('
9805 * '- 9' for 'del-map(' + trailing ')'
9806 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9807 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9808
9809 cur_arg = 1;
9810
9811 if (!*args[cur_arg] ||
9812 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9813 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9814 file, linenum, args[0]);
9815 goto out_err;
9816 }
9817
9818 LIST_INIT(&rule->arg.map.key);
9819 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9820 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9821 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]9822 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9823 Alert("parsing [%s:%d]: 'http-response %s' %s.\n",
9824 file, linenum, args[0], error);
9825 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9826 goto out_err;
9827 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9828 free(proxy->conf.lfs_file);
9829 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9830 proxy->conf.lfs_line = proxy->conf.args.line;
9831 cur_arg += 1;
9832 } else if (strncmp(args[0], "set-map", 7) == 0) {
9833 /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9834 rule->action = ACT_HTTP_SET_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9835 /*
9836 * '+ 8' for 'set-map('
9837 * '- 9' for 'set-map(' + trailing ')'
9838 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9839 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9840
9841 cur_arg = 1;
9842
9843 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9844 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9845 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9846 file, linenum, args[0]);
9847 goto out_err;
9848 }
9849
9850 LIST_INIT(&rule->arg.map.key);
9851 LIST_INIT(&rule->arg.map.value);
9852
9853 proxy->conf.args.ctx = ARGC_HRS;
9854
9855 /* key pattern */
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9856 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9857 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]9858 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9859 Alert("parsing [%s:%d]: 'http-response %s' name: %s.\n",
9860 file, linenum, args[0], error);
9861 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9862 goto out_err;
9863 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9864
9865 /* value pattern */
Thierry FOURNIER / OZON.IO8a4e4422016-11-23 00:41:28 +0100[diff] [blame]9866 error = NULL;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9867 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]9868 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR, &error)) {
9869 Alert("parsing [%s:%d]: 'http-response %s' value: %s.\n",
9870 file, linenum, args[0], error);
9871 free(error);
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]9872 goto out_err;
9873 }
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9874
9875 free(proxy->conf.lfs_file);
9876 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9877 proxy->conf.lfs_line = proxy->conf.args.line;
9878
9879 cur_arg += 2;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]9880 } else if (strcmp(args[0], "redirect") == 0) {
9881 struct redirect_rule *redir;
9882 char *errmsg = NULL;
9883
9884 if ((redir = http_parse_redirect_rule(file, linenum, proxy, (const char **)args + 1, &errmsg, 1, 1)) == NULL) {
9885 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9886 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9887 goto out_err;
9888 }
9889
9890 /* this redirect rule might already contain a parsed condition which
9891 * we'll pass to the http-request rule.
9892 */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9893 rule->action = ACT_HTTP_REDIR;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]9894 rule->arg.redir = redir;
9895 rule->cond = redir->cond;
9896 redir->cond = NULL;
9897 cur_arg = 2;
9898 return rule;
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]9899 } else if (strncmp(args[0], "track-sc", 8) == 0 &&
9900 args[0][9] == '\0' && args[0][8] >= '0' &&
9901 args[0][8] < '0' + MAX_SESS_STKCTR) { /* track-sc 0..9 */
9902 struct sample_expr *expr;
9903 unsigned int where;
9904 char *err = NULL;
9905
9906 cur_arg = 1;
9907 proxy->conf.args.ctx = ARGC_TRK;
9908
9909 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9910 if (!expr) {
9911 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9912 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9913 free(err);
9914 goto out_err;
9915 }
9916
9917 where = 0;
9918 if (proxy->cap & PR_CAP_FE)
9919 where |= SMP_VAL_FE_HRS_HDR;
9920 if (proxy->cap & PR_CAP_BE)
9921 where |= SMP_VAL_BE_HRS_HDR;
9922
9923 if (!(expr->fetch->val & where)) {
9924 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule :"
9925 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9926 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9927 args[cur_arg-1], sample_src_names(expr->fetch->use));
9928 free(expr);
9929 goto out_err;
9930 }
9931
9932 if (strcmp(args[cur_arg], "table") == 0) {
9933 cur_arg++;
9934 if (!args[cur_arg]) {
9935 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : missing table name.\n",
9936 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9937 free(expr);
9938 goto out_err;
9939 }
9940 /* we copy the table name for now, it will be resolved later */
9941 rule->arg.trk_ctr.table.n = strdup(args[cur_arg]);
9942 cur_arg++;
9943 }
9944 rule->arg.trk_ctr.expr = expr;
9945 rule->action = ACT_ACTION_TRK_SC0 + args[0][8] - '0';
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9946 } else if (((custom = action_http_res_custom(args[0])) != NULL)) {
9947 char *errmsg = NULL;
9948 cur_arg = 1;
9949 /* try in the module list */
Thierry FOURNIER5563e4b2015-08-14 19:20:07 +0200[diff] [blame]9950 rule->from = ACT_F_HTTP_RES;
Thierry FOURNIER85c6c972015-09-22 19:14:35 +0200[diff] [blame]9951 rule->kw = custom;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]9952 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) == ACT_RET_PRS_ERR) {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9953 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9954 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9955 free(errmsg);
9956 goto out_err;
9957 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9958 } else {
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9959 action_build_list(&http_res_keywords.list, &trash);
9960 Alert("parsing [%s:%d]: 'http-response' expects 'allow', 'deny', 'redirect', "
9961 "'add-header', 'del-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', "
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]9962 "'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]9963 "%s%s, but got '%s'%s.\n",
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9964 file, linenum, *trash.str ? ", " : "", trash.str, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9965 goto out_err;
9966 }
9967
9968 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9969 struct acl_cond *cond;
9970 char *errmsg = NULL;
9971
9972 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9973 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
9974 file, linenum, args[0], errmsg);
9975 free(errmsg);
9976 goto out_err;
9977 }
9978 rule->cond = cond;
9979 }
9980 else if (*args[cur_arg]) {
9981 Alert("parsing [%s:%d]: 'http-response %s' expects"
9982 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9983 file, linenum, args[0], args[cur_arg]);
9984 goto out_err;
9985 }
9986
9987 return rule;
9988 out_err:
9989 free(rule);
9990 return NULL;
9991}
9992
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9993/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9994 * 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]9995 * dynamic log-format rule instead of a static string. Parameter <dir> indicates
9996 * the direction of the rule, and equals 0 for request, non-zero for responses.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9997 */
9998struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9999 const char **args, char **errmsg, int use_fmt, int dir)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10000{
10001 struct redirect_rule *rule;
10002 int cur_arg;
10003 int type = REDIRECT_TYPE_NONE;
10004 int code = 302;
10005 const char *destination = NULL;
10006 const char *cookie = NULL;
10007 int cookie_set = 0;
10008 unsigned int flags = REDIRECT_FLAG_NONE;
10009 struct acl_cond *cond = NULL;
10010
10011 cur_arg = 0;
10012 while (*(args[cur_arg])) {
10013 if (strcmp(args[cur_arg], "location") == 0) {
10014 if (!*args[cur_arg + 1])
10015 goto missing_arg;
10016
10017 type = REDIRECT_TYPE_LOCATION;
10018 cur_arg++;
10019 destination = args[cur_arg];
10020 }
10021 else if (strcmp(args[cur_arg], "prefix") == 0) {
10022 if (!*args[cur_arg + 1])
10023 goto missing_arg;
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10024 type = REDIRECT_TYPE_PREFIX;
10025 cur_arg++;
10026 destination = args[cur_arg];
10027 }
10028 else if (strcmp(args[cur_arg], "scheme") == 0) {
10029 if (!*args[cur_arg + 1])
10030 goto missing_arg;
10031
10032 type = REDIRECT_TYPE_SCHEME;
10033 cur_arg++;
10034 destination = args[cur_arg];
10035 }
10036 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
10037 if (!*args[cur_arg + 1])
10038 goto missing_arg;
10039
10040 cur_arg++;
10041 cookie = args[cur_arg];
10042 cookie_set = 1;
10043 }
10044 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
10045 if (!*args[cur_arg + 1])
10046 goto missing_arg;
10047
10048 cur_arg++;
10049 cookie = args[cur_arg];
10050 cookie_set = 0;
10051 }
10052 else if (strcmp(args[cur_arg], "code") == 0) {
10053 if (!*args[cur_arg + 1])
10054 goto missing_arg;
10055
10056 cur_arg++;
10057 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]10058 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10059 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]10060 "'%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]10061 args[cur_arg - 1], args[cur_arg]);
10062 return NULL;
10063 }
10064 }
10065 else if (!strcmp(args[cur_arg],"drop-query")) {
10066 flags |= REDIRECT_FLAG_DROP_QS;
10067 }
10068 else if (!strcmp(args[cur_arg],"append-slash")) {
10069 flags |= REDIRECT_FLAG_APPEND_SLASH;
10070 }
10071 else if (strcmp(args[cur_arg], "if") == 0 ||
10072 strcmp(args[cur_arg], "unless") == 0) {
10073 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
10074 if (!cond) {
10075 memprintf(errmsg, "error in condition: %s", *errmsg);
10076 return NULL;
10077 }
10078 break;
10079 }
10080 else {
10081 memprintf(errmsg,
10082 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
10083 args[cur_arg]);
10084 return NULL;
10085 }
10086 cur_arg++;
10087 }
10088
10089 if (type == REDIRECT_TYPE_NONE) {
10090 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
10091 return NULL;
10092 }
10093
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]10094 if (dir && type != REDIRECT_TYPE_LOCATION) {
10095 memprintf(errmsg, "response only supports redirect type 'location'");
10096 return NULL;
10097 }
10098
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]10099 rule = calloc(1, sizeof(*rule));
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10100 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]10101 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10102
10103 if (!use_fmt) {
10104 /* old-style static redirect rule */
10105 rule->rdr_str = strdup(destination);
10106 rule->rdr_len = strlen(destination);
10107 }
10108 else {
10109 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10110
10111 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
10112 * if prefix == "/", we don't want to add anything, otherwise it
10113 * makes it hard for the user to configure a self-redirection.
10114 */
Godbachd9722032014-12-18 15:44:58 +0800[diff] [blame]10115 curproxy->conf.args.ctx = ARGC_RDR;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10116 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]10117 if (!parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
10118 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]10119 : (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
10120 errmsg)) {
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]10121 return NULL;
10122 }
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]10123 free(curproxy->conf.lfs_file);
10124 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
10125 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10126 }
10127 }
10128
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10129 if (cookie) {
10130 /* depending on cookie_set, either we want to set the cookie, or to clear it.
10131 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
10132 */
10133 rule->cookie_len = strlen(cookie);
10134 if (cookie_set) {
10135 rule->cookie_str = malloc(rule->cookie_len + 10);
10136 memcpy(rule->cookie_str, cookie, rule->cookie_len);
10137 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
10138 rule->cookie_len += 9;
10139 } else {
10140 rule->cookie_str = malloc(rule->cookie_len + 21);
10141 memcpy(rule->cookie_str, cookie, rule->cookie_len);
10142 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
10143 rule->cookie_len += 20;
10144 }
10145 }
10146 rule->type = type;
10147 rule->code = code;
10148 rule->flags = flags;
10149 LIST_INIT(&rule->list);
10150 return rule;
10151
10152 missing_arg:
10153 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
10154 return NULL;
10155}
10156
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10157/************************************************************************/
10158/* The code below is dedicated to ACL parsing and matching */
10159/************************************************************************/
10160
10161
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10162/* This function ensures that the prerequisites for an L7 fetch are ready,
10163 * which means that a request or response is ready. If some data is missing,
10164 * 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]10165 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
10166 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10167 *
10168 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10169 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
10170 * decide whether or not an HTTP message is present ;
10171 * 0 if the requested data cannot be fetched or if it is certain that
10172 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10173 * 1 if an HTTP message is ready
10174 */
James Rosewell91a41cb2015-09-18 17:11:16 +0100[diff] [blame]10175int smp_prefetch_http(struct proxy *px, struct stream *s, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10176 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10177{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10178 struct http_txn *txn;
10179 struct http_msg *msg;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10180
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10181 /* Note: it is possible that <s> is NULL when called before stream
10182 * initialization (eg: tcp-request connection), so this function is the
10183 * one responsible for guarding against this case for all HTTP users.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10184 */
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10185 if (!s)
10186 return 0;
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10187
Thierry FOURNIERed08d6a2015-09-24 08:40:18 +0200[diff] [blame]10188 if (!s->txn) {
10189 if (unlikely(!http_alloc_txn(s)))
10190 return 0; /* not enough memory */
10191 http_init_txn(s);
10192 }
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10193 txn = s->txn;
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10194 msg = &txn->req;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10195
10196 /* Check for a dependency on a request */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10197 smp->data.type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10198
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10199 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10200 /* If the buffer does not leave enough free space at the end,
10201 * we must first realign it.
10202 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10203 if (s->req.buf->p > s->req.buf->data &&
10204 s->req.buf->i + s->req.buf->p > s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)
10205 buffer_slow_realign(s->req.buf);
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10206
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10207 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]10208 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10209 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10210
10211 /* Try to decode HTTP request */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10212 if (likely(msg->next < s->req.buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10213 http_msg_analyzer(msg, &txn->hdr_idx);
10214
10215 /* Still no valid request ? */
10216 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]10217 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10218 buffer_full(s->req.buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10219 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10220 }
10221 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10222 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10223 return 0;
10224 }
10225
10226 /* OK we just got a valid HTTP request. We have some minor
10227 * preparation to perform so that further checks can rely
10228 * on HTTP tests.
10229 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10230
10231 /* If the request was parsed but was too large, we must absolutely
10232 * return an error so that it is not processed. At the moment this
10233 * cannot happen, but if the parsers are to change in the future,
10234 * we want this check to be maintained.
10235 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10236 if (unlikely(s->req.buf->i + s->req.buf->p >
10237 s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)) {
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]10238 msg->err_state = msg->msg_state;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10239 msg->msg_state = HTTP_MSG_ERROR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10240 smp->data.u.sint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10241 return 1;
10242 }
10243
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10244 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10245 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]10246 s->flags |= SF_REDIRECTABLE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10247
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10248 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
10249 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10250 }
10251
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10252 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10253 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10254 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10255
10256 /* otherwise everything's ready for the request */
10257 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10258 else {
10259 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10260 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
10261 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10262 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10263 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10264 }
10265
10266 /* everything's OK */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10267 smp->data.u.sint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10268 return 1;
10269}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10270
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10271/* 1. Check on METHOD
10272 * We use the pre-parsed method if it is known, and store its number as an
10273 * integer. If it is unknown, we use the pointer and the length.
10274 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]10275static int pat_parse_meth(const char *text, struct pattern *pattern, int mflags, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10276{
10277 int len, meth;
10278
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]10279 len = strlen(text);
10280 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10281
10282 pattern->val.i = meth;
10283 if (meth == HTTP_METH_OTHER) {
Willy Tarreau912c1192014-08-29 15:15:50 +0200[diff] [blame]10284 pattern->ptr.str = (char *)text;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10285 pattern->len = len;
10286 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10287 else {
10288 pattern->ptr.str = NULL;
10289 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10290 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10291 return 1;
10292}
10293
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10294/* This function fetches the method of current HTTP request and stores
10295 * it in the global pattern struct as a chunk. There are two possibilities :
10296 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
10297 * in <len> and <ptr> is NULL ;
10298 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
10299 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10300 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10301 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10302static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10303smp_fetch_meth(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10304{
10305 int meth;
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10306 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10307
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10308 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10309
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10310 txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10311 meth = txn->meth;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10312 smp->data.type = SMP_T_METH;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10313 smp->data.u.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10314 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10315 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
10316 /* ensure the indexes are not affected */
10317 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10318 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10319 smp->data.u.meth.str.len = txn->req.sl.rq.m_l;
10320 smp->data.u.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10321 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10322 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10323 return 1;
10324}
10325
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10326/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10327static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10328{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10329 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10330 struct pattern_list *lst;
10331 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10332
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10333 list_for_each_entry(lst, &expr->patterns, list) {
10334 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10335
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10336 /* well-known method */
10337 if (pattern->val.i != HTTP_METH_OTHER) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10338 if (smp->data.u.meth.meth == pattern->val.i)
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10339 return pattern;
10340 else
10341 continue;
10342 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10343
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10344 /* Other method, we must compare the strings */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10345 if (pattern->len != smp->data.u.meth.str.len)
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10346 continue;
10347
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]10348 icase = expr->mflags & PAT_MF_IGNORE_CASE;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10349 if ((icase && strncasecmp(pattern->ptr.str, smp->data.u.meth.str.str, smp->data.u.meth.str.len) == 0) ||
10350 (!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]10351 return pattern;
10352 }
10353 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10354}
10355
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10356static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10357smp_fetch_rqver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10358{
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10359 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10360 char *ptr;
10361 int len;
10362
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10363 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10364
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10365 txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10366 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10367 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10368
10369 while ((len-- > 0) && (*ptr++ != '/'));
10370 if (len <= 0)
10371 return 0;
10372
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10373 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10374 smp->data.u.str.str = ptr;
10375 smp->data.u.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10376
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10377 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10378 return 1;
10379}
10380
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10381static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10382smp_fetch_stver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10383{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10384 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10385 char *ptr;
10386 int len;
10387
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10388 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10389
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10390 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10391 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10392 return 0;
10393
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10394 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10395 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10396
10397 while ((len-- > 0) && (*ptr++ != '/'));
10398 if (len <= 0)
10399 return 0;
10400
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10401 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10402 smp->data.u.str.str = ptr;
10403 smp->data.u.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10404
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10405 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10406 return 1;
10407}
10408
10409/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10410static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10411smp_fetch_stcode(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10412{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10413 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10414 char *ptr;
10415 int len;
10416
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10417 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10418
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10419 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10420 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10421 return 0;
10422
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10423 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10424 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10425
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10426 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10427 smp->data.u.sint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10428 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10429 return 1;
10430}
10431
Thierry Fournierf4011dd2016-03-29 17:23:51 +0200[diff] [blame]10432static int
10433smp_fetch_uniqueid(const struct arg *args, struct sample *smp, const char *kw, void *private)
10434{
10435 if (LIST_ISEMPTY(&smp->sess->fe->format_unique_id))
10436 return 0;
10437
10438 if (!smp->strm->unique_id) {
10439 if ((smp->strm->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
10440 return 0;
10441 smp->strm->unique_id[0] = '\0';
10442 }
10443 smp->data.u.str.len = build_logline(smp->strm, smp->strm->unique_id,
10444 UNIQUEID_LEN, &smp->sess->fe->format_unique_id);
10445
10446 smp->data.type = SMP_T_STR;
10447 smp->data.u.str.str = smp->strm->unique_id;
10448 smp->flags = SMP_F_CONST;
10449 return 1;
10450}
10451
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10452/* returns the longest available part of the body. This requires that the body
10453 * has been waited for using http-buffer-request.
10454 */
10455static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10456smp_fetch_body(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10457{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10458 struct http_msg *msg;
10459 unsigned long len;
10460 unsigned long block1;
10461 char *body;
10462 struct chunk *temp;
10463
10464 CHECK_HTTP_MESSAGE_FIRST();
10465
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10466 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10467 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10468 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10469 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10470
10471 len = http_body_bytes(msg);
10472 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
10473
10474 block1 = len;
10475 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
10476 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
10477
10478 if (block1 == len) {
10479 /* buffer is not wrapped (or empty) */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10480 smp->data.type = SMP_T_BIN;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10481 smp->data.u.str.str = body;
10482 smp->data.u.str.len = len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10483 smp->flags = SMP_F_VOL_TEST | SMP_F_CONST;
10484 }
10485 else {
10486 /* buffer is wrapped, we need to defragment it */
10487 temp = get_trash_chunk();
10488 memcpy(temp->str, body, block1);
10489 memcpy(temp->str + block1, msg->chn->buf->data, len - block1);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10490 smp->data.type = SMP_T_BIN;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10491 smp->data.u.str.str = temp->str;
10492 smp->data.u.str.len = len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10493 smp->flags = SMP_F_VOL_TEST;
10494 }
10495 return 1;
10496}
10497
10498
10499/* returns the available length of the body. This requires that the body
10500 * has been waited for using http-buffer-request.
10501 */
10502static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10503smp_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]10504{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10505 struct http_msg *msg;
10506
10507 CHECK_HTTP_MESSAGE_FIRST();
10508
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10509 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10510 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10511 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10512 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10513
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10514 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10515 smp->data.u.sint = http_body_bytes(msg);
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10516
10517 smp->flags = SMP_F_VOL_TEST;
10518 return 1;
10519}
10520
10521
10522/* returns the advertised length of the body, or the advertised size of the
10523 * chunks available in the buffer. This requires that the body has been waited
10524 * for using http-buffer-request.
10525 */
10526static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10527smp_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]10528{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10529 struct http_msg *msg;
10530
10531 CHECK_HTTP_MESSAGE_FIRST();
10532
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10533 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10534 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10535 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10536 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10537
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10538 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10539 smp->data.u.sint = msg->body_len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10540
10541 smp->flags = SMP_F_VOL_TEST;
10542 return 1;
10543}
10544
10545
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10546/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10547static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10548smp_fetch_url(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10549{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10550 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10551
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10552 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10553
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10554 txn = smp->strm->txn;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10555 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10556 smp->data.u.str.len = txn->req.sl.rq.u_l;
10557 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]10558 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10559 return 1;
10560}
10561
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10562static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10563smp_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]10564{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10565 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10566 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10567
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10568 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10569
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10570 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10571 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]10572 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]10573 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10574
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10575 smp->data.type = SMP_T_IPV4;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10576 smp->data.u.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10577 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10578 return 1;
10579}
10580
10581static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10582smp_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]10583{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10584 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10585 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10586
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10587 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10588
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10589 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10590 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]10591 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
10592 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10593
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10594 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10595 smp->data.u.sint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]10596 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10597 return 1;
10598}
10599
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10600/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10601 * Accepts an optional argument of type string containing the header field name,
10602 * and an optional argument of type signed or unsigned integer to request an
10603 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10604 * headers are considered from the first one. It does not stop on commas and
10605 * returns full lines instead (useful for User-Agent or Date for example).
10606 */
10607static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10608smp_fetch_fhdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10609{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10610 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10611 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10612 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10613 int occ = 0;
10614 const char *name_str = NULL;
10615 int name_len = 0;
10616
10617 if (!ctx) {
10618 /* first call */
10619 ctx = &static_hdr_ctx;
10620 ctx->idx = 0;
10621 smp->ctx.a[0] = ctx;
10622 }
10623
10624 if (args) {
10625 if (args[0].type != ARGT_STR)
10626 return 0;
10627 name_str = args[0].data.str.str;
10628 name_len = args[0].data.str.len;
10629
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10630 if (args[1].type == ARGT_SINT)
10631 occ = args[1].data.sint;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10632 }
10633
10634 CHECK_HTTP_MESSAGE_FIRST();
10635
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10636 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10637 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]10638
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10639 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
10640 /* search for header from the beginning */
10641 ctx->idx = 0;
10642
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10643 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10644 /* no explicit occurrence and single fetch => last header by default */
10645 occ = -1;
10646
10647 if (!occ)
10648 /* prepare to report multiple occurrences for ACL fetches */
10649 smp->flags |= SMP_F_NOT_LAST;
10650
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10651 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10652 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10653 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]10654 return 1;
10655
10656 smp->flags &= ~SMP_F_NOT_LAST;
10657 return 0;
10658}
10659
10660/* 6. Check on HTTP header count. The number of occurrences is returned.
10661 * Accepts exactly 1 argument of type string. It does not stop on commas and
10662 * returns full lines instead (useful for User-Agent or Date for example).
10663 */
10664static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10665smp_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]10666{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10667 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10668 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10669 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10670 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10671 const char *name = NULL;
10672 int len = 0;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10673
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10674 if (args && args->type == ARGT_STR) {
10675 name = args->data.str.str;
10676 len = args->data.str.len;
10677 }
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10678
10679 CHECK_HTTP_MESSAGE_FIRST();
10680
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10681 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10682 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]10683
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10684 ctx.idx = 0;
10685 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10686 while (http_find_full_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10687 cnt++;
10688
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10689 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10690 smp->data.u.sint = cnt;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10691 smp->flags = SMP_F_VOL_HDR;
10692 return 1;
10693}
10694
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10695static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10696smp_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]10697{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10698 struct hdr_idx *idx;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10699 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10700 const struct http_msg *msg;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10701 struct chunk *temp;
10702 char del = ',';
10703
10704 if (args && args->type == ARGT_STR)
10705 del = *args[0].data.str.str;
10706
10707 CHECK_HTTP_MESSAGE_FIRST();
10708
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10709 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10710 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]10711
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10712 temp = get_trash_chunk();
10713
10714 ctx.idx = 0;
10715 while (http_find_next_header(msg->chn->buf->p, idx, &ctx)) {
10716 if (temp->len)
10717 temp->str[temp->len++] = del;
10718 memcpy(temp->str + temp->len, ctx.line, ctx.del);
10719 temp->len += ctx.del;
10720 }
10721
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10722 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10723 smp->data.u.str.str = temp->str;
10724 smp->data.u.str.len = temp->len;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10725 smp->flags = SMP_F_VOL_HDR;
10726 return 1;
10727}
10728
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10729/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10730 * Accepts an optional argument of type string containing the header field name,
10731 * and an optional argument of type signed or unsigned integer to request an
10732 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10733 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10734 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10735static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10736smp_fetch_hdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10737{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10738 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10739 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10740 const struct http_msg *msg;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10741 int occ = 0;
10742 const char *name_str = NULL;
10743 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10744
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10745 if (!ctx) {
10746 /* first call */
10747 ctx = &static_hdr_ctx;
10748 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]10749 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10750 }
10751
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10752 if (args) {
10753 if (args[0].type != ARGT_STR)
10754 return 0;
10755 name_str = args[0].data.str.str;
10756 name_len = args[0].data.str.len;
10757
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10758 if (args[1].type == ARGT_SINT)
10759 occ = args[1].data.sint;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10760 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10761
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10762 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10763
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10764 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10765 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]10766
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10767 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10768 /* search for header from the beginning */
10769 ctx->idx = 0;
10770
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10771 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10772 /* no explicit occurrence and single fetch => last header by default */
10773 occ = -1;
10774
10775 if (!occ)
10776 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10777 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]10778
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10779 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10780 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10781 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]10782 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10783
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10784 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10785 return 0;
10786}
10787
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10788/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10789 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10790 */
10791static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10792smp_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]10793{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10794 struct hdr_idx *idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10795 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10796 const struct http_msg *msg;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10797 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10798 const char *name = NULL;
10799 int len = 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10800
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10801 if (args && args->type == ARGT_STR) {
10802 name = args->data.str.str;
10803 len = args->data.str.len;
10804 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10805
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10806 CHECK_HTTP_MESSAGE_FIRST();
10807
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10808 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10809 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]10810
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10811 ctx.idx = 0;
10812 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10813 while (http_find_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10814 cnt++;
10815
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10816 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10817 smp->data.u.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10818 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10819 return 1;
10820}
10821
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10822/* Fetch an HTTP header's integer value. The integer value is returned. It
10823 * takes a mandatory argument of type string and an optional one of type int
10824 * to designate a specific occurrence. It returns an unsigned integer, which
10825 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10826 */
10827static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10828smp_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]10829{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10830 int ret = smp_fetch_hdr(args, smp, kw, private);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10831
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10832 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10833 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10834 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]10835 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10836
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10837 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10838}
10839
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10840/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
10841 * and an optional one of type int to designate a specific occurrence.
10842 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10843 */
10844static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10845smp_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]10846{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10847 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10848
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10849 while ((ret = smp_fetch_hdr(args, smp, kw, private)) > 0) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10850 if (url2ipv4((char *)smp->data.u.str.str, &smp->data.u.ipv4)) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10851 smp->data.type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10852 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10853 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10854 struct chunk *temp = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10855 if (smp->data.u.str.len < temp->size - 1) {
10856 memcpy(temp->str, smp->data.u.str.str, smp->data.u.str.len);
10857 temp->str[smp->data.u.str.len] = '\0';
10858 if (inet_pton(AF_INET6, temp->str, &smp->data.u.ipv6)) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10859 smp->data.type = SMP_T_IPV6;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10860 break;
10861 }
10862 }
10863 }
10864
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10865 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10866 if (!(smp->flags & SMP_F_NOT_LAST))
10867 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10868 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10869 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10870}
10871
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10872/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
10873 * the first '/' after the possible hostname, and ends before the possible '?'.
10874 */
10875static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10876smp_fetch_path(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10877{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10878 struct http_txn *txn;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10879 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10880
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10881 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10882
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10883 txn = smp->strm->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10884 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]10885 ptr = http_get_path(txn);
10886 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10887 return 0;
10888
10889 /* OK, we got the '/' ! */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10890 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10891 smp->data.u.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10892
10893 while (ptr < end && *ptr != '?')
10894 ptr++;
10895
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10896 smp->data.u.str.len = ptr - smp->data.u.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10897 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10898 return 1;
10899}
10900
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10901/* This produces a concatenation of the first occurrence of the Host header
10902 * followed by the path component if it begins with a slash ('/'). This means
10903 * that '*' will not be added, resulting in exactly the first Host entry.
10904 * If no Host header is found, then the path is returned as-is. The returned
10905 * 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]10906 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10907 */
10908static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10909smp_fetch_base(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10910{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10911 struct http_txn *txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10912 char *ptr, *end, *beg;
10913 struct hdr_ctx ctx;
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10914 struct chunk *temp;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10915
10916 CHECK_HTTP_MESSAGE_FIRST();
10917
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10918 txn = smp->strm->txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10919 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10920 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]10921 return smp_fetch_path(args, smp, kw, private);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10922
10923 /* 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]10924 temp = get_trash_chunk();
10925 memcpy(temp->str, ctx.line + ctx.val, ctx.vlen);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10926 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10927 smp->data.u.str.str = temp->str;
10928 smp->data.u.str.len = ctx.vlen;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10929
10930 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10931 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]10932 beg = http_get_path(txn);
10933 if (!beg)
10934 beg = end;
10935
10936 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10937
10938 if (beg < ptr && *beg == '/') {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10939 memcpy(smp->data.u.str.str + smp->data.u.str.len, beg, ptr - beg);
10940 smp->data.u.str.len += ptr - beg;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10941 }
10942
10943 smp->flags = SMP_F_VOL_1ST;
10944 return 1;
10945}
10946
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10947/* This produces a 32-bit hash of the concatenation of the first occurrence of
10948 * the Host header followed by the path component if it begins with a slash ('/').
10949 * This means that '*' will not be added, resulting in exactly the first Host
10950 * 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]10951 * is hashed using the path hash followed by a full avalanche hash and provides a
10952 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10953 * high-traffic sites without having to store whole paths.
10954 */
Thierry FOURNIER055b9d52014-07-15 16:11:07 +0200[diff] [blame]10955int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10956smp_fetch_base32(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10957{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10958 struct http_txn *txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10959 struct hdr_ctx ctx;
10960 unsigned int hash = 0;
10961 char *ptr, *beg, *end;
10962 int len;
10963
10964 CHECK_HTTP_MESSAGE_FIRST();
10965
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10966 txn = smp->strm->txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10967 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10968 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]10969 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10970 ptr = ctx.line + ctx.val;
10971 len = ctx.vlen;
10972 while (len--)
10973 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10974 }
10975
10976 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10977 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]10978 beg = http_get_path(txn);
10979 if (!beg)
10980 beg = end;
10981
10982 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10983
10984 if (beg < ptr && *beg == '/') {
10985 while (beg < ptr)
10986 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10987 }
10988 hash = full_hash(hash);
10989
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10990 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10991 smp->data.u.sint = hash;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10992 smp->flags = SMP_F_VOL_1ST;
10993 return 1;
10994}
10995
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10996/* 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]10997 * path as returned by smp_fetch_base32(). The idea is to have per-source and
10998 * per-path counters. The result is a binary block from 8 to 20 bytes depending
10999 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]11000 * that in environments where IPv6 is insignificant, truncating the output to
11001 * 8 bytes would still work.
11002 */
11003static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11004smp_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]11005{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]11006 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11007 struct connection *cli_conn = objt_conn(smp->sess->origin);
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11008
11009 if (!cli_conn)
11010 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]11011
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11012 if (!smp_fetch_base32(args, smp, kw, private))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]11013 return 0;
11014
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]11015 temp = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11016 *(unsigned int *)temp->str = htonl(smp->data.u.sint);
Willy Tarreau5ad6e1d2014-07-15 21:34:06 +0200[diff] [blame]11017 temp->len += sizeof(unsigned int);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]11018
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11019 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]11020 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11021 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]11022 temp->len += 4;
11023 break;
11024 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11025 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]11026 temp->len += 16;
11027 break;
11028 default:
11029 return 0;
11030 }
11031
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11032 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11033 smp->data.type = SMP_T_BIN;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]11034 return 1;
11035}
11036
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]11037/* Extracts the query string, which comes after the question mark '?'. If no
11038 * question mark is found, nothing is returned. Otherwise it returns a sample
11039 * of type string carrying the whole query string.
11040 */
11041static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11042smp_fetch_query(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]11043{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11044 struct http_txn *txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]11045 char *ptr, *end;
11046
11047 CHECK_HTTP_MESSAGE_FIRST();
11048
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11049 txn = smp->strm->txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]11050 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
11051 end = ptr + txn->req.sl.rq.u_l;
11052
11053 /* look up the '?' */
11054 do {
11055 if (ptr == end)
11056 return 0;
11057 } while (*ptr++ != '?');
11058
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11059 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11060 smp->data.u.str.str = ptr;
11061 smp->data.u.str.len = end - ptr;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]11062 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
11063 return 1;
11064}
11065
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]11066static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11067smp_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]11068{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]11069 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
11070 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
11071 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]11072
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11073 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]11074
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11075 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11076 smp->data.u.sint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]11077 return 1;
11078}
11079
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]11080/* return a valid test if the current request is the first one on the connection */
11081static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11082smp_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]11083{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11084 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11085 smp->data.u.sint = !(smp->strm->txn->flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]11086 return 1;
11087}
11088
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11089/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11090static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11091smp_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]11092{
11093
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11094 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11095 return 0;
11096
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]11097 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11098
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11099 if (!get_http_auth(smp->strm))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11100 return 0;
11101
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11102 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11103 smp->data.u.sint = check_user(args->data.usr, smp->strm->txn->auth.user,
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11104 smp->strm->txn->auth.pass);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11105 return 1;
11106}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11107
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11108/* Accepts exactly 1 argument of type userlist */
11109static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11110smp_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]11111{
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11112 if (!args || args->type != ARGT_USR)
11113 return 0;
11114
11115 CHECK_HTTP_MESSAGE_FIRST();
11116
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11117 if (!get_http_auth(smp->strm))
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11118 return 0;
11119
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11120 /* if the user does not belong to the userlist or has a wrong password,
11121 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]11122 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11123 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11124 if (!check_user(args->data.usr, smp->strm->txn->auth.user,
11125 smp->strm->txn->auth.pass))
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]11126 return 0;
11127
11128 /* pat_match_auth() will need the user list */
11129 smp->ctx.a[0] = args->data.usr;
11130
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11131 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11132 smp->flags = SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11133 smp->data.u.str.str = smp->strm->txn->auth.user;
11134 smp->data.u.str.len = strlen(smp->strm->txn->auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11135
11136 return 1;
11137}
11138
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11139/* Try to find the next occurrence of a cookie name in a cookie header value.
11140 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
11141 * the cookie value is returned into *value and *value_l, and the function
11142 * returns a pointer to the next pointer to search from if the value was found.
11143 * Otherwise if the cookie was not found, NULL is returned and neither value
11144 * nor value_l are touched. The input <hdr> string should first point to the
11145 * header's value, and the <hdr_end> pointer must point to the first character
11146 * not part of the value. <list> must be non-zero if value may represent a list
11147 * of values (cookie headers). This makes it faster to abort parsing when no
11148 * list is expected.
11149 */
David Carlier4686f792015-09-25 14:10:50 +0100[diff] [blame]11150char *
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11151extract_cookie_value(char *hdr, const char *hdr_end,
11152 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]11153 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11154{
11155 char *equal, *att_end, *att_beg, *val_beg, *val_end;
11156 char *next;
11157
11158 /* we search at least a cookie name followed by an equal, and more
11159 * generally something like this :
11160 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
11161 */
11162 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
11163 /* Iterate through all cookies on this line */
11164
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]11165 while (att_beg < hdr_end && HTTP_IS_SPHT(*att_beg))
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11166 att_beg++;
11167
11168 /* find att_end : this is the first character after the last non
11169 * space before the equal. It may be equal to hdr_end.
11170 */
11171 equal = att_end = att_beg;
11172
11173 while (equal < hdr_end) {
11174 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
11175 break;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]11176 if (HTTP_IS_SPHT(*equal++))
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11177 continue;
11178 att_end = equal;
11179 }
11180
11181 /* here, <equal> points to '=', a delimitor or the end. <att_end>
11182 * is between <att_beg> and <equal>, both may be identical.
11183 */
11184
11185 /* look for end of cookie if there is an equal sign */
11186 if (equal < hdr_end && *equal == '=') {
11187 /* look for the beginning of the value */
11188 val_beg = equal + 1;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]11189 while (val_beg < hdr_end && HTTP_IS_SPHT(*val_beg))
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11190 val_beg++;
11191
11192 /* find the end of the value, respecting quotes */
11193 next = find_cookie_value_end(val_beg, hdr_end);
11194
11195 /* make val_end point to the first white space or delimitor after the value */
11196 val_end = next;
Willy Tarreau2235b262016-11-05 15:50:20 +0100[diff] [blame]11197 while (val_end > val_beg && HTTP_IS_SPHT(*(val_end - 1)))
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11198 val_end--;
11199 } else {
11200 val_beg = val_end = next = equal;
11201 }
11202
11203 /* We have nothing to do with attributes beginning with '$'. However,
11204 * they will automatically be removed if a header before them is removed,
11205 * since they're supposed to be linked together.
11206 */
11207 if (*att_beg == '$')
11208 continue;
11209
11210 /* Ignore cookies with no equal sign */
11211 if (equal == next)
11212 continue;
11213
11214 /* Now we have the cookie name between att_beg and att_end, and
11215 * its value between val_beg and val_end.
11216 */
11217
11218 if (att_end - att_beg == cookie_name_l &&
11219 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
11220 /* let's return this value and indicate where to go on from */
11221 *value = val_beg;
11222 *value_l = val_end - val_beg;
11223 return next + 1;
11224 }
11225
11226 /* Set-Cookie headers only have the name in the first attr=value part */
11227 if (!list)
11228 break;
11229 }
11230
11231 return NULL;
11232}
11233
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11234/* Fetch a captured HTTP request header. The index is the position of
11235 * the "capture" option in the configuration file
11236 */
11237static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11238smp_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]11239{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11240 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11241 int idx;
11242
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11243 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11244 return 0;
11245
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11246 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11247
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11248 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]11249 return 0;
11250
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11251 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11252 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11253 smp->data.u.str.str = smp->strm->req_cap[idx];
11254 smp->data.u.str.len = strlen(smp->strm->req_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11255
11256 return 1;
11257}
11258
11259/* Fetch a captured HTTP response header. The index is the position of
11260 * the "capture" option in the configuration file
11261 */
11262static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11263smp_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]11264{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11265 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11266 int idx;
11267
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11268 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11269 return 0;
11270
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11271 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11272
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11273 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]11274 return 0;
11275
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11276 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11277 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11278 smp->data.u.str.str = smp->strm->res_cap[idx];
11279 smp->data.u.str.len = strlen(smp->strm->res_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11280
11281 return 1;
11282}
11283
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11284/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
11285static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11286smp_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]11287{
11288 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11289 struct http_txn *txn = smp->strm->txn;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11290 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11291
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11292 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11293 return 0;
11294
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11295 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11296
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11297 while (*ptr != ' ' && *ptr != '\0') /* find first space */
11298 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11299
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11300 temp = get_trash_chunk();
11301 temp->str = txn->uri;
11302 temp->len = ptr - txn->uri;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11303 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11304 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11305 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11306
11307 return 1;
11308
11309}
11310
11311/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
11312static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11313smp_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]11314{
11315 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11316 struct http_txn *txn = smp->strm->txn;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11317 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11318
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11319 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11320 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11321
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11322 ptr = txn->uri;
11323
11324 while (*ptr != ' ' && *ptr != '\0') /* find first space */
11325 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11326
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11327 if (!*ptr)
11328 return 0;
11329
11330 ptr++; /* skip the space */
11331
11332 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11333 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11334 if (!ptr)
11335 return 0;
11336 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
11337 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11338
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11339 smp->data.u.str = *temp;
11340 smp->data.u.str.len = ptr - temp->str;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11341 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11342 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11343
11344 return 1;
11345}
11346
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11347/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
11348 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11349 */
11350static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11351smp_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]11352{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11353 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11354
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11355 if (!txn || txn->req.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11356 return 0;
11357
11358 if (txn->req.flags & HTTP_MSGF_VER_11)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11359 smp->data.u.str.str = "HTTP/1.1";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11360 else
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11361 smp->data.u.str.str = "HTTP/1.0";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11362
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11363 smp->data.u.str.len = 8;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11364 smp->data.type = SMP_T_STR;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11365 smp->flags = SMP_F_CONST;
11366 return 1;
11367
11368}
11369
11370/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
11371 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11372 */
11373static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11374smp_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]11375{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11376 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11377
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11378 if (!txn || txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11379 return 0;
11380
11381 if (txn->rsp.flags & HTTP_MSGF_VER_11)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11382 smp->data.u.str.str = "HTTP/1.1";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11383 else
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11384 smp->data.u.str.str = "HTTP/1.0";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11385
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11386 smp->data.u.str.len = 8;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11387 smp->data.type = SMP_T_STR;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11388 smp->flags = SMP_F_CONST;
11389 return 1;
11390
11391}
11392
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11393
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11394/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11395 * 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]11396 * 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]11397 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11398 * 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]11399 * Accepts exactly 1 argument of type string. If the input options indicate
11400 * that no iterating is desired, then only last value is fetched if any.
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]11401 * The returned sample is of type CSTR. Can be used to parse cookies in other
11402 * files.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11403 */
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11404int 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]11405{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11406 struct http_txn *txn;
11407 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11408 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11409 const struct http_msg *msg;
11410 const char *hdr_name;
11411 int hdr_name_len;
11412 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11413 int occ = 0;
11414 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11415
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11416 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11417 return 0;
11418
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11419 if (!ctx) {
11420 /* first call */
11421 ctx = &static_hdr_ctx;
11422 ctx->idx = 0;
11423 smp->ctx.a[2] = ctx;
11424 }
11425
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11426 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11427
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11428 txn = smp->strm->txn;
11429 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11430
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11431 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11432 msg = &txn->req;
11433 hdr_name = "Cookie";
11434 hdr_name_len = 6;
11435 } else {
11436 msg = &txn->rsp;
11437 hdr_name = "Set-Cookie";
11438 hdr_name_len = 10;
11439 }
11440
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11441 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11442 /* no explicit occurrence and single fetch => last cookie by default */
11443 occ = -1;
11444
11445 /* OK so basically here, either we want only one value and it's the
11446 * last one, or we want to iterate over all of them and we fetch the
11447 * next one.
11448 */
11449
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11450 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11451 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11452 /* search for the header from the beginning, we must first initialize
11453 * the search parameters.
11454 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11455 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11456 ctx->idx = 0;
11457 }
11458
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11459 smp->flags |= SMP_F_VOL_HDR;
11460
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11461 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11462 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
11463 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11464 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
11465 goto out;
11466
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11467 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11468 continue;
11469
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11470 smp->ctx.a[0] = ctx->line + ctx->val;
11471 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11472 }
11473
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11474 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11475 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11476 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]11477 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11478 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11479 &smp->data.u.str.str,
11480 &smp->data.u.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11481 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11482 found = 1;
11483 if (occ >= 0) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11484 /* one value was returned into smp->data.u.str.{str,len} */
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11485 smp->flags |= SMP_F_NOT_LAST;
11486 return 1;
11487 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11488 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11489 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11490 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11491 /* all cookie headers and values were scanned. If we're looking for the
11492 * last occurrence, we may return it now.
11493 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11494 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11495 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11496 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11497}
11498
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11499/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11500 * 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]11501 * multiple cookies may be parsed on the same line. The returned sample is of
11502 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11503 */
11504static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11505smp_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]11506{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11507 struct http_txn *txn;
11508 struct hdr_idx *idx;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11509 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11510 const struct http_msg *msg;
11511 const char *hdr_name;
11512 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11513 int cnt;
11514 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11515 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11516
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11517 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11518 return 0;
11519
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11520 CHECK_HTTP_MESSAGE_FIRST();
11521
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11522 txn = smp->strm->txn;
11523 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11524
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11525 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11526 msg = &txn->req;
11527 hdr_name = "Cookie";
11528 hdr_name_len = 6;
11529 } else {
11530 msg = &txn->rsp;
11531 hdr_name = "Set-Cookie";
11532 hdr_name_len = 10;
11533 }
11534
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11535 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]11536 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11537 ctx.idx = 0;
11538 cnt = 0;
11539
11540 while (1) {
11541 /* Note: val_beg == NULL every time we need to fetch a new header */
11542 if (!val_beg) {
11543 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
11544 break;
11545
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11546 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11547 continue;
11548
11549 val_beg = ctx.line + ctx.val;
11550 val_end = val_beg + ctx.vlen;
11551 }
11552
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11553 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11554 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11555 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11556 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11557 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11558 &smp->data.u.str.str,
11559 &smp->data.u.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11560 cnt++;
11561 }
11562 }
11563
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11564 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11565 smp->data.u.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11566 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11567 return 1;
11568}
11569
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11570/* Fetch an cookie's integer value. The integer value is returned. It
11571 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
11572 */
11573static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11574smp_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]11575{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11576 int ret = smp_fetch_cookie(args, smp, kw, private);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11577
11578 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11579 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11580 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]11581 }
11582
11583 return ret;
11584}
11585
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11586/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]11587/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11588/************************************************************************/
11589
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11590/*
11591 * Given a path string and its length, find the position of beginning of the
11592 * query string. Returns NULL if no query string is found in the path.
11593 *
11594 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
11595 *
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11596 * find_query_string(path, n, '?') points to "yo=mama;ye=daddy" string.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11597 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11598static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11599{
11600 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]11601
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11602 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11603 return p ? p + 1 : NULL;
11604}
11605
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11606static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11607{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11608 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11609}
11610
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11611/* after increasing a pointer value, it can exceed the first buffer
11612 * size. This function transform the value of <ptr> according with
11613 * the expected position. <chunks> is an array of the one or two
11614 * avalaible chunks. The first value is the start of the first chunk,
11615 * the second value if the end+1 of the first chunks. The third value
11616 * is NULL or the start of the second chunk and the fourth value is
11617 * the end+1 of the second chunk. The function returns 1 if does a
11618 * wrap, else returns 0.
11619 */
11620static inline int fix_pointer_if_wrap(const char **chunks, const char **ptr)
11621{
11622 if (*ptr < chunks[1])
11623 return 0;
11624 if (!chunks[2])
11625 return 0;
11626 *ptr = chunks[2] + ( *ptr - chunks[1] );
11627 return 1;
11628}
11629
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11630/*
11631 * Given a url parameter, find the starting position of the first occurence,
11632 * or NULL if the parameter is not found.
11633 *
11634 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
11635 * the function will return query_string+8.
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11636 *
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11637 * Warning: this function returns a pointer that can point to the first chunk
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11638 * or the second chunk. The caller must be check the position before using the
11639 * result.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11640 */
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11641static const char *
11642find_url_param_pos(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11643 const char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11644 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11645{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11646 const char *pos, *last, *equal;
11647 const char **bufs = chunks;
11648 int l1, l2;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11649
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11650
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11651 pos = bufs[0];
11652 last = bufs[1];
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11653 while (pos < last) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11654 /* Check the equal. */
11655 equal = pos + url_param_name_l;
11656 if (fix_pointer_if_wrap(chunks, &equal)) {
11657 if (equal >= chunks[3])
11658 return NULL;
11659 } else {
11660 if (equal >= chunks[1])
11661 return NULL;
11662 }
11663 if (*equal == '=') {
11664 if (pos + url_param_name_l > last) {
11665 /* process wrap case, we detect a wrap. In this case, the
11666 * comparison is performed in two parts.
11667 */
11668
11669 /* This is the end, we dont have any other chunk. */
11670 if (bufs != chunks || !bufs[2])
11671 return NULL;
11672
11673 /* Compute the length of each part of the comparison. */
11674 l1 = last - pos;
11675 l2 = url_param_name_l - l1;
11676
11677 /* The second buffer is too short to contain the compared string. */
11678 if (bufs[2] + l2 > bufs[3])
11679 return NULL;
11680
11681 if (memcmp(pos, url_param_name, l1) == 0 &&
11682 memcmp(bufs[2], url_param_name+l1, l2) == 0)
11683 return pos;
11684
11685 /* Perform wrapping and jump the string who fail the comparison. */
11686 bufs += 2;
11687 pos = bufs[0] + l2;
11688 last = bufs[1];
11689
11690 } else {
11691 /* process a simple comparison. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11692 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
11693 return pos;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11694 pos += url_param_name_l + 1;
11695 if (fix_pointer_if_wrap(chunks, &pos))
11696 last = bufs[2];
11697 }
11698 }
11699
11700 while (1) {
11701 /* Look for the next delimiter. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11702 while (pos < last && !is_param_delimiter(*pos, delim))
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11703 pos++;
11704 if (pos < last)
11705 break;
11706 /* process buffer wrapping. */
11707 if (bufs != chunks || !bufs[2])
11708 return NULL;
11709 bufs += 2;
11710 pos = bufs[0];
11711 last = bufs[1];
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11712 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11713 pos++;
11714 }
11715 return NULL;
11716}
11717
11718/*
Cyril Bontéce1ef4d2015-11-26 21:39:56 +0100[diff] [blame]11719 * Given a url parameter name and a query string, find the next value.
11720 * An empty url_param_name matches the first available parameter.
11721 * If the parameter is found, 1 is returned and *vstart / *vend are updated to
11722 * respectively provide a pointer to the value and its end.
11723 * Otherwise, 0 is returned and vstart/vend are not modified.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11724 */
11725static int
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11726find_next_url_param(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11727 const char* url_param_name, size_t url_param_name_l,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11728 const char **vstart, const char **vend, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11729{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11730 const char *arg_start, *qs_end;
11731 const char *value_start, *value_end;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11732
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11733 arg_start = chunks[0];
11734 qs_end = chunks[1];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11735 if (url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11736 /* Looks for an argument name. */
11737 arg_start = find_url_param_pos(chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11738 url_param_name, url_param_name_l,
11739 delim);
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11740 /* Check for wrapping. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11741 if (arg_start >= qs_end)
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11742 qs_end = chunks[3];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11743 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11744 if (!arg_start)
11745 return 0;
11746
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11747 if (!url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11748 while (1) {
11749 /* looks for the first argument. */
11750 value_start = memchr(arg_start, '=', qs_end - arg_start);
11751 if (!value_start) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11752 /* Check for wrapping. */
11753 if (arg_start >= chunks[0] &&
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11754 arg_start < chunks[1] &&
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11755 chunks[2]) {
11756 arg_start = chunks[2];
11757 qs_end = chunks[3];
11758 continue;
11759 }
11760 return 0;
11761 }
11762 break;
11763 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11764 value_start++;
11765 }
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11766 else {
11767 /* Jump the argument length. */
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11768 value_start = arg_start + url_param_name_l + 1;
11769
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11770 /* Check for pointer wrapping. */
11771 if (fix_pointer_if_wrap(chunks, &value_start)) {
11772 /* Update the end pointer. */
11773 qs_end = chunks[3];
11774
11775 /* Check for overflow. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11776 if (value_start >= qs_end)
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11777 return 0;
11778 }
11779 }
11780
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11781 value_end = value_start;
11782
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11783 while (1) {
11784 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
11785 value_end++;
11786 if (value_end < qs_end)
11787 break;
11788 /* process buffer wrapping. */
11789 if (value_end >= chunks[0] &&
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11790 value_end < chunks[1] &&
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11791 chunks[2]) {
11792 value_end = chunks[2];
11793 qs_end = chunks[3];
11794 continue;
11795 }
11796 break;
11797 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11798
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11799 *vstart = value_start;
11800 *vend = value_end;
Cyril Bontéce1ef4d2015-11-26 21:39:56 +0100[diff] [blame]11801 return 1;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11802}
11803
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11804/* This scans a URL-encoded query string. It takes an optionally wrapping
11805 * string whose first contigous chunk has its beginning in ctx->a[0] and end
11806 * in ctx->a[1], and the optional second part in (ctx->a[2]..ctx->a[3]). The
11807 * pointers are updated for next iteration before leaving.
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11808 */
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11809static int
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11810smp_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]11811{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11812 const char *vstart, *vend;
11813 struct chunk *temp;
11814 const char **chunks = (const char **)smp->ctx.a;
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11815
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11816 if (!find_next_url_param(chunks,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11817 name, name_len,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11818 &vstart, &vend,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11819 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11820 return 0;
11821
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11822 /* Create sample. If the value is contiguous, return the pointer as CONST,
11823 * if the value is wrapped, copy-it in a buffer.
11824 */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11825 smp->data.type = SMP_T_STR;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11826 if (chunks[2] &&
11827 vstart >= chunks[0] && vstart <= chunks[1] &&
11828 vend >= chunks[2] && vend <= chunks[3]) {
11829 /* Wrapped case. */
11830 temp = get_trash_chunk();
11831 memcpy(temp->str, vstart, chunks[1] - vstart);
11832 memcpy(temp->str + ( chunks[1] - vstart ), chunks[2], vend - chunks[2]);
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11833 smp->data.u.str.str = temp->str;
11834 smp->data.u.str.len = ( chunks[1] - vstart ) + ( vend - chunks[2] );
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11835 } else {
11836 /* Contiguous case. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11837 smp->data.u.str.str = (char *)vstart;
11838 smp->data.u.str.len = vend - vstart;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11839 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
11840 }
11841
11842 /* Update context, check wrapping. */
11843 chunks[0] = vend;
11844 if (chunks[2] && vend >= chunks[2] && vend <= chunks[3]) {
11845 chunks[1] = chunks[3];
11846 chunks[2] = NULL;
11847 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11848
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11849 if (chunks[0] < chunks[1])
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11850 smp->flags |= SMP_F_NOT_LAST;
11851
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11852 return 1;
11853}
11854
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11855/* This function iterates over each parameter of the query string. It uses
11856 * 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]11857 * parameter. Since it uses smp_fetch_param(), ctx->a[2..3] are both NULL.
11858 * An optional parameter name is passed in args[0], otherwise any parameter is
11859 * considered. It supports an optional delimiter argument for the beginning of
11860 * the string in args[1], which defaults to "?".
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11861 */
11862static int
11863smp_fetch_url_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11864{
11865 struct http_msg *msg;
11866 char delim = '?';
11867 const char *name;
11868 int name_len;
11869
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11870 if (!args ||
11871 (args[0].type && args[0].type != ARGT_STR) ||
11872 (args[1].type && args[1].type != ARGT_STR))
11873 return 0;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11874
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11875 name = "";
11876 name_len = 0;
11877 if (args->type == ARGT_STR) {
11878 name = args->data.str.str;
11879 name_len = args->data.str.len;
11880 }
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11881
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11882 if (args[1].type)
11883 delim = *args[1].data.str.str;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11884
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11885 if (!smp->ctx.a[0]) { // first call, find the query string
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11886 CHECK_HTTP_MESSAGE_FIRST();
11887
11888 msg = &smp->strm->txn->req;
11889
11890 smp->ctx.a[0] = find_param_list(msg->chn->buf->p + msg->sl.rq.u,
11891 msg->sl.rq.u_l, delim);
11892 if (!smp->ctx.a[0])
11893 return 0;
11894
11895 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]11896
11897 /* Assume that the context is filled with NULL pointer
11898 * before the first call.
11899 * smp->ctx.a[2] = NULL;
11900 * smp->ctx.a[3] = NULL;
11901 */
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11902 }
11903
11904 return smp_fetch_param(delim, name, name_len, args, smp, kw, private);
11905}
11906
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11907/* This function iterates over each parameter of the body. This requires
11908 * that the body has been waited for using http-buffer-request. It uses
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11909 * ctx->a[0] and ctx->a[1] to store the beginning and end of the first
11910 * contigous part of the body, and optionally ctx->a[2..3] to reference the
11911 * optional second part if the body wraps at the end of the buffer. An optional
11912 * parameter name is passed in args[0], otherwise any parameter is considered.
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11913 */
11914static int
11915smp_fetch_body_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11916{
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11917 struct http_msg *msg;
11918 unsigned long len;
11919 unsigned long block1;
11920 char *body;
11921 const char *name;
11922 int name_len;
11923
11924 if (!args || (args[0].type && args[0].type != ARGT_STR))
11925 return 0;
11926
11927 name = "";
11928 name_len = 0;
11929 if (args[0].type == ARGT_STR) {
11930 name = args[0].data.str.str;
11931 name_len = args[0].data.str.len;
11932 }
11933
11934 if (!smp->ctx.a[0]) { // first call, find the query string
11935 CHECK_HTTP_MESSAGE_FIRST();
11936
11937 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]11938 msg = &smp->strm->txn->req;
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11939 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]11940 msg = &smp->strm->txn->rsp;
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11941
11942 len = http_body_bytes(msg);
11943 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
11944
11945 block1 = len;
11946 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
11947 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
11948
11949 if (block1 == len) {
11950 /* buffer is not wrapped (or empty) */
11951 smp->ctx.a[0] = body;
11952 smp->ctx.a[1] = body + len;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11953
11954 /* Assume that the context is filled with NULL pointer
11955 * before the first call.
11956 * smp->ctx.a[2] = NULL;
11957 * smp->ctx.a[3] = NULL;
11958 */
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11959 }
11960 else {
11961 /* buffer is wrapped, we need to defragment it */
11962 smp->ctx.a[0] = body;
11963 smp->ctx.a[1] = body + block1;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11964 smp->ctx.a[2] = msg->chn->buf->data;
11965 smp->ctx.a[3] = msg->chn->buf->data + ( len - block1 );
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11966 }
11967 }
11968 return smp_fetch_param('&', name, name_len, args, smp, kw, private);
11969}
11970
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11971/* Return the signed integer value for the specified url parameter (see url_param
11972 * above).
11973 */
11974static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11975smp_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]11976{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11977 int ret = smp_fetch_url_param(args, smp, kw, private);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11978
11979 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11980 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11981 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]11982 }
11983
11984 return ret;
11985}
11986
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11987/* This produces a 32-bit hash of the concatenation of the first occurrence of
11988 * the Host header followed by the path component if it begins with a slash ('/').
11989 * This means that '*' will not be added, resulting in exactly the first Host
11990 * entry. If no Host header is found, then the path is used. The resulting value
11991 * is hashed using the url hash followed by a full avalanche hash and provides a
11992 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
11993 * high-traffic sites without having to store whole paths.
11994 * this differs from the base32 functions in that it includes the url parameters
11995 * as well as the path
11996 */
11997static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11998smp_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]11999{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]12000 struct http_txn *txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12001 struct hdr_ctx ctx;
12002 unsigned int hash = 0;
12003 char *ptr, *beg, *end;
12004 int len;
12005
12006 CHECK_HTTP_MESSAGE_FIRST();
12007
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12008 txn = smp->strm->txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12009 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]12010 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]12011 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
12012 ptr = ctx.line + ctx.val;
12013 len = ctx.vlen;
12014 while (len--)
12015 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
12016 }
12017
12018 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]12019 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]12020 beg = http_get_path(txn);
12021 if (!beg)
12022 beg = end;
12023
12024 for (ptr = beg; ptr < end ; ptr++);
12025
12026 if (beg < ptr && *beg == '/') {
12027 while (beg < ptr)
12028 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
12029 }
12030 hash = full_hash(hash);
12031
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]12032 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12033 smp->data.u.sint = hash;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12034 smp->flags = SMP_F_VOL_1ST;
12035 return 1;
12036}
12037
12038/* This concatenates the source address with the 32-bit hash of the Host and
12039 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
12040 * per-url counters. The result is a binary block from 8 to 20 bytes depending
12041 * on the source address length. The URL hash is stored before the address so
12042 * that in environments where IPv6 is insignificant, truncating the output to
12043 * 8 bytes would still work.
12044 */
12045static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]12046smp_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]12047{
12048 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12049 struct connection *cli_conn = objt_conn(smp->sess->origin);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12050
Dragan Dosendb5af612016-06-16 11:23:01 +0200[diff] [blame]12051 if (!cli_conn)
12052 return 0;
12053
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]12054 if (!smp_fetch_url32(args, smp, kw, private))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12055 return 0;
12056
12057 temp = get_trash_chunk();
Dragan Dosene5f41332016-06-16 11:08:08 +0200[diff] [blame]12058 *(unsigned int *)temp->str = htonl(smp->data.u.sint);
12059 temp->len += sizeof(unsigned int);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12060
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]12061 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12062 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]12063 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]12064 temp->len += 4;
12065 break;
12066 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]12067 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]12068 temp->len += 16;
12069 break;
12070 default:
12071 return 0;
12072 }
12073
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12074 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]12075 smp->data.type = SMP_T_BIN;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12076 return 1;
12077}
12078
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]12079/* This function is used to validate the arguments passed to any "hdr" fetch
12080 * keyword. These keywords support an optional positive or negative occurrence
12081 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
12082 * is assumed that the types are already the correct ones. Returns 0 on error,
12083 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
12084 * error message in case of error, that the caller is responsible for freeing.
12085 * The initial location must either be freeable or NULL.
12086 */
Thierry FOURNIER49f45af2014-12-08 19:50:43 +0100[diff] [blame]12087int val_hdr(struct arg *arg, char **err_msg)
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]12088{
12089 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]12090 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]12091 return 0;
12092 }
12093 return 1;
12094}
12095
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12096/* takes an UINT value on input supposed to represent the time since EPOCH,
12097 * adds an optional offset found in args[0] and emits a string representing
12098 * the date in RFC-1123/5322 format.
12099 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12100static int sample_conv_http_date(const struct arg *args, struct sample *smp, void *private)
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12101{
Cyril Bontéf78d8962016-01-22 19:40:28 +0100[diff] [blame]12102 const char day[7][4] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12103 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
12104 struct chunk *temp;
12105 struct tm *tm;
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12106 /* 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]12107 time_t curr_date = smp->data.u.sint & 0x007fffffffffffffLL;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12108
12109 /* add offset */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12110 if (args && (args[0].type == ARGT_SINT))
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12111 curr_date += args[0].data.sint;
12112
12113 tm = gmtime(&curr_date);
Thierry FOURNIERfac9ccf2015-07-08 00:15:20 +0200[diff] [blame]12114 if (!tm)
12115 return 0;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12116
12117 temp = get_trash_chunk();
12118 temp->len = snprintf(temp->str, temp->size - temp->len,
12119 "%s, %02d %s %04d %02d:%02d:%02d GMT",
12120 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
12121 tm->tm_hour, tm->tm_min, tm->tm_sec);
12122
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12123 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]12124 smp->data.type = SMP_T_STR;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12125 return 1;
12126}
12127
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12128/* Match language range with language tag. RFC2616 14.4:
12129 *
12130 * A language-range matches a language-tag if it exactly equals
12131 * the tag, or if it exactly equals a prefix of the tag such
12132 * that the first tag character following the prefix is "-".
12133 *
12134 * Return 1 if the strings match, else return 0.
12135 */
12136static inline int language_range_match(const char *range, int range_len,
12137 const char *tag, int tag_len)
12138{
12139 const char *end = range + range_len;
12140 const char *tend = tag + tag_len;
12141 while (range < end) {
12142 if (*range == '-' && tag == tend)
12143 return 1;
12144 if (*range != *tag || tag == tend)
12145 return 0;
12146 range++;
12147 tag++;
12148 }
12149 /* Return true only if the last char of the tag is matched. */
12150 return tag == tend;
12151}
12152
12153/* Arguments: The list of expected value, the number of parts returned and the separator */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12154static int sample_conv_q_prefered(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12155{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12156 const char *al = smp->data.u.str.str;
12157 const char *end = al + smp->data.u.str.len;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12158 const char *token;
12159 int toklen;
12160 int qvalue;
12161 const char *str;
12162 const char *w;
12163 int best_q = 0;
12164
12165 /* Set the constant to the sample, because the output of the
12166 * function will be peek in the constant configuration string.
12167 */
12168 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12169 smp->data.u.str.size = 0;
12170 smp->data.u.str.str = "";
12171 smp->data.u.str.len = 0;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12172
12173 /* Parse the accept language */
12174 while (1) {
12175
12176 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12177 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12178 al++;
12179 if (al >= end)
12180 break;
12181
12182 /* Start of the fisrt word. */
12183 token = al;
12184
12185 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12186 while (al < end && *al != ';' && *al != ',' && !isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12187 al++;
12188 if (al == token)
12189 goto expect_comma;
12190
12191 /* Length of the token. */
12192 toklen = al - token;
12193 qvalue = 1000;
12194
12195 /* Check if the token exists in the list. If the token not exists,
12196 * jump to the next token.
12197 */
12198 str = args[0].data.str.str;
12199 w = str;
12200 while (1) {
12201 if (*str == ';' || *str == '\0') {
12202 if (language_range_match(token, toklen, w, str-w))
12203 goto look_for_q;
12204 if (*str == '\0')
12205 goto expect_comma;
12206 w = str + 1;
12207 }
12208 str++;
12209 }
12210 goto expect_comma;
12211
12212look_for_q:
12213
12214 /* Jump spaces, quit 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 /* If ',' is found, process the result */
12221 if (*al == ',')
12222 goto process_value;
12223
12224 /* If the character is different from ';', look
12225 * for the end of the header part in best effort.
12226 */
12227 if (*al != ';')
12228 goto expect_comma;
12229
12230 /* Assumes that the char is ';', now expect "q=". */
12231 al++;
12232
12233 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12234 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12235 al++;
12236 if (al >= end)
12237 goto process_value;
12238
12239 /* Expect 'q'. If no 'q', continue in best effort */
12240 if (*al != 'q')
12241 goto process_value;
12242 al++;
12243
12244 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12245 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12246 al++;
12247 if (al >= end)
12248 goto process_value;
12249
12250 /* Expect '='. If no '=', continue in best effort */
12251 if (*al != '=')
12252 goto process_value;
12253 al++;
12254
12255 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12256 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12257 al++;
12258 if (al >= end)
12259 goto process_value;
12260
12261 /* Parse the q value. */
12262 qvalue = parse_qvalue(al, &al);
12263
12264process_value:
12265
12266 /* If the new q value is the best q value, then store the associated
12267 * language in the response. If qvalue is the biggest value (1000),
12268 * break the process.
12269 */
12270 if (qvalue > best_q) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12271 smp->data.u.str.str = (char *)w;
12272 smp->data.u.str.len = str - w;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12273 if (qvalue >= 1000)
12274 break;
12275 best_q = qvalue;
12276 }
12277
12278expect_comma:
12279
12280 /* Expect comma or end. If the end is detected, quit the loop. */
12281 while (al < end && *al != ',')
12282 al++;
12283 if (al >= end)
12284 break;
12285
12286 /* Comma is found, jump it and restart the analyzer. */
12287 al++;
12288 }
12289
12290 /* Set default value if required. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12291 if (smp->data.u.str.len == 0 && args[1].type == ARGT_STR) {
12292 smp->data.u.str.str = args[1].data.str.str;
12293 smp->data.u.str.len = args[1].data.str.len;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12294 }
12295
12296 /* Return true only if a matching language was found. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12297 return smp->data.u.str.len != 0;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12298}
12299
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12300/* This fetch url-decode any input string. */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12301static int sample_conv_url_dec(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12302{
12303 /* If the constant flag is set or if not size is avalaible at
12304 * the end of the buffer, copy the string in other buffer
12305 * before decoding.
12306 */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12307 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]12308 struct chunk *str = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12309 memcpy(str->str, smp->data.u.str.str, smp->data.u.str.len);
12310 smp->data.u.str.str = str->str;
12311 smp->data.u.str.size = str->size;
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12312 smp->flags &= ~SMP_F_CONST;
12313 }
12314
12315 /* Add final \0 required by url_decode(), and convert the input string. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12316 smp->data.u.str.str[smp->data.u.str.len] = '\0';
12317 smp->data.u.str.len = url_decode(smp->data.u.str.str);
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12318 return 1;
12319}
12320
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12321static int smp_conv_req_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_req_cap - 1)
12335 return 0;
12336
12337 /* Look for the original configuration. */
12338 for (hdr = fe->req_cap, i = fe->nb_req_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->req_cap[hdr->index] == NULL)
12346 smp->strm->req_cap[hdr->index] = pool_alloc2(hdr->pool);
12347 if (smp->strm->req_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->req_cap[idx], smp->data.u.str.str, len);
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12357 smp->strm->req_cap[idx][len] = '\0';
12358
12359 return 1;
12360}
12361
12362static int smp_conv_res_capture(const struct arg *args, struct sample *smp, void *private)
12363{
12364 struct proxy *fe = strm_fe(smp->strm);
12365 int idx, i;
12366 struct cap_hdr *hdr;
12367 int len;
12368
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12369 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12370 return 0;
12371
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12372 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12373
12374 /* Check the availibity of the capture id. */
12375 if (idx > fe->nb_rsp_cap - 1)
12376 return 0;
12377
12378 /* Look for the original configuration. */
12379 for (hdr = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
12380 hdr != NULL && i != idx ;
12381 i--, hdr = hdr->next);
12382 if (!hdr)
12383 return 0;
12384
12385 /* check for the memory allocation */
12386 if (smp->strm->res_cap[hdr->index] == NULL)
12387 smp->strm->res_cap[hdr->index] = pool_alloc2(hdr->pool);
12388 if (smp->strm->res_cap[hdr->index] == NULL)
12389 return 0;
12390
12391 /* Check length. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12392 len = smp->data.u.str.len;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12393 if (len > hdr->len)
12394 len = hdr->len;
12395
12396 /* Capture input data. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12397 memcpy(smp->strm->res_cap[idx], smp->data.u.str.str, len);
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12398 smp->strm->res_cap[idx][len] = '\0';
12399
12400 return 1;
12401}
12402
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12403/* This function executes one of the set-{method,path,query,uri} actions. It
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12404 * takes the string from the variable 'replace' with length 'len', then modifies
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12405 * the relevant part of the request line accordingly. Then it updates various
12406 * pointers to the next elements which were moved, and the total buffer length.
12407 * It finds the action to be performed in p[2], previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12408 * parse_set_req_line(). It returns 0 in case of success, -1 in case of internal
12409 * error, though this can be revisited when this code is finally exploited.
12410 *
12411 * 'action' can be '0' to replace method, '1' to replace path, '2' to replace
12412 * query string and 3 to replace uri.
12413 *
12414 * In query string case, the mark question '?' must be set at the start of the
12415 * string by the caller, event if the replacement query string is empty.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12416 */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12417int http_replace_req_line(int action, const char *replace, int len,
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12418 struct proxy *px, struct stream *s)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12419{
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12420 struct http_txn *txn = s->txn;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12421 char *cur_ptr, *cur_end;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12422 int offset = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12423 int delta;
12424
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12425 switch (action) {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12426 case 0: // method
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12427 cur_ptr = s->req.buf->p;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12428 cur_end = cur_ptr + txn->req.sl.rq.m_l;
12429
12430 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12431 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12432 txn->req.sl.rq.m_l += delta;
12433 txn->req.sl.rq.u += delta;
12434 txn->req.sl.rq.v += delta;
12435 break;
12436
12437 case 1: // path
12438 cur_ptr = http_get_path(txn);
12439 if (!cur_ptr)
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12440 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12441
12442 cur_end = cur_ptr;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12443 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]12444 cur_end++;
12445
12446 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12447 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12448 txn->req.sl.rq.u_l += delta;
12449 txn->req.sl.rq.v += delta;
12450 break;
12451
12452 case 2: // query
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12453 offset = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12454 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12455 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12456 while (cur_ptr < cur_end && *cur_ptr != '?')
12457 cur_ptr++;
12458
12459 /* skip the question mark or indicate that we must insert it
12460 * (but only if the format string is not empty then).
12461 */
12462 if (cur_ptr < cur_end)
12463 cur_ptr++;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12464 else if (len > 1)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12465 offset = 0;
12466
12467 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12468 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12469 txn->req.sl.rq.u_l += delta;
12470 txn->req.sl.rq.v += delta;
12471 break;
12472
12473 case 3: // uri
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12474 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12475 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12476
12477 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12478 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12479 txn->req.sl.rq.u_l += delta;
12480 txn->req.sl.rq.v += delta;
12481 break;
12482
12483 default:
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12484 return -1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12485 }
12486
12487 /* commit changes and adjust end of message */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12488 delta = buffer_replace2(s->req.buf, cur_ptr, cur_end, replace + offset, len - offset);
Thierry FOURNIER7f6192c2015-04-26 18:01:40 +0200[diff] [blame]12489 txn->req.sl.rq.l += delta;
12490 txn->hdr_idx.v[0].len += delta;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12491 http_msg_move_end(&txn->req, delta);
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12492 return 0;
12493}
12494
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12495/* This function replace the HTTP status code and the associated message. The
12496 * variable <status> contains the new status code. This function never fails.
12497 */
Robin H. Johnson52f5db22017-01-01 13:10:52 -0800[diff] [blame]12498void http_set_status(unsigned int status, const char *reason, struct stream *s)
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12499{
12500 struct http_txn *txn = s->txn;
12501 char *cur_ptr, *cur_end;
12502 int delta;
12503 char *res;
12504 int c_l;
Robin H. Johnson52f5db22017-01-01 13:10:52 -0800[diff] [blame]12505 const char *msg = reason;
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12506 int msg_len;
12507
12508 chunk_reset(&trash);
12509
12510 res = ultoa_o(status, trash.str, trash.size);
12511 c_l = res - trash.str;
12512
12513 trash.str[c_l] = ' ';
12514 trash.len = c_l + 1;
12515
Robin H. Johnson52f5db22017-01-01 13:10:52 -0800[diff] [blame]12516 /* Do we have a custom reason format string? */
12517 if (msg == NULL)
12518 msg = get_reason(status);
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12519 msg_len = strlen(msg);
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12520 strncpy(&trash.str[trash.len], msg, trash.size - trash.len);
12521 trash.len += msg_len;
12522
12523 cur_ptr = s->res.buf->p + txn->rsp.sl.st.c;
12524 cur_end = s->res.buf->p + txn->rsp.sl.st.r + txn->rsp.sl.st.r_l;
12525
12526 /* commit changes and adjust message */
12527 delta = buffer_replace2(s->res.buf, cur_ptr, cur_end, trash.str, trash.len);
12528
12529 /* adjust res line offsets and lengths */
12530 txn->rsp.sl.st.r += c_l - txn->rsp.sl.st.c_l;
12531 txn->rsp.sl.st.c_l = c_l;
12532 txn->rsp.sl.st.r_l = msg_len;
12533
12534 delta = trash.len - (cur_end - cur_ptr);
12535 txn->rsp.sl.st.l += delta;
12536 txn->hdr_idx.v[0].len += delta;
12537 http_msg_move_end(&txn->rsp, delta);
12538}
12539
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12540/* This function executes one of the set-{method,path,query,uri} actions. It
12541 * builds a string in the trash from the specified format string. It finds
Thierry FOURNIER3f4bc652015-08-26 16:23:34 +0200[diff] [blame]12542 * the action to be performed in <http.action>, previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12543 * parse_set_req_line(). The replacement action is excuted by the function
Thierry FOURNIER3f4bc652015-08-26 16:23:34 +0200[diff] [blame]12544 * http_action_set_req_line(). It always returns ACT_RET_CONT. If an error
12545 * occurs the action is canceled, but the rule processing continue.
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12546 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12547enum act_return http_action_set_req_line(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12548 struct session *sess, struct stream *s, int flags)
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12549{
12550 chunk_reset(&trash);
12551
12552 /* If we have to create a query string, prepare a '?'. */
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12553 if (rule->arg.http.action == 2)
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12554 trash.str[trash.len++] = '?';
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12555 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]12556
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12557 http_replace_req_line(rule->arg.http.action, trash.str, trash.len, px, s);
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12558 return ACT_RET_CONT;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12559}
12560
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12561/* This function is just a compliant action wrapper for "set-status". */
12562enum act_return action_http_set_status(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12563 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12564{
Robin H. Johnson52f5db22017-01-01 13:10:52 -0800[diff] [blame]12565 http_set_status(rule->arg.status.code, rule->arg.status.reason, s);
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12566 return ACT_RET_CONT;
12567}
12568
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12569/* parse an http-request action among :
12570 * set-method
12571 * set-path
12572 * set-query
12573 * set-uri
12574 *
12575 * All of them accept a single argument of type string representing a log-format.
12576 * The resulting rule makes use of arg->act.p[0..1] to store the log-format list
12577 * 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]12578 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12579 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12580enum act_parse_ret parse_set_req_line(const char **args, int *orig_arg, struct proxy *px,
12581 struct act_rule *rule, char **err)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12582{
12583 int cur_arg = *orig_arg;
12584
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12585 rule->action = ACT_CUSTOM;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12586
12587 switch (args[0][4]) {
12588 case 'm' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12589 rule->arg.http.action = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12590 rule->action_ptr = http_action_set_req_line;
12591 break;
12592 case 'p' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12593 rule->arg.http.action = 1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12594 rule->action_ptr = http_action_set_req_line;
12595 break;
12596 case 'q' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12597 rule->arg.http.action = 2;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12598 rule->action_ptr = http_action_set_req_line;
12599 break;
12600 case 'u' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12601 rule->arg.http.action = 3;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12602 rule->action_ptr = http_action_set_req_line;
12603 break;
12604 default:
12605 memprintf(err, "internal error: unhandled action '%s'", args[0]);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12606 return ACT_RET_PRS_ERR;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12607 }
12608
12609 if (!*args[cur_arg] ||
12610 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
12611 memprintf(err, "expects exactly 1 argument <format>");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12612 return ACT_RET_PRS_ERR;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12613 }
12614
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12615 LIST_INIT(&rule->arg.http.logfmt);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12616 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER / OZON.IO59fd5112016-11-22 23:50:02 +0100[diff] [blame]12617 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]12618 (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]12619 return ACT_RET_PRS_ERR;
12620 }
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12621
12622 (*orig_arg)++;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12623 return ACT_RET_PRS_OK;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12624}
12625
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12626/* parse set-status action:
12627 * This action accepts a single argument of type int representing
12628 * an http status code. It returns ACT_RET_PRS_OK on success,
12629 * ACT_RET_PRS_ERR on error.
12630 */
12631enum act_parse_ret parse_http_set_status(const char **args, int *orig_arg, struct proxy *px,
12632 struct act_rule *rule, char **err)
12633{
12634 char *error;
12635
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12636 rule->action = ACT_CUSTOM;
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12637 rule->action_ptr = action_http_set_status;
12638
12639 /* Check if an argument is available */
12640 if (!*args[*orig_arg]) {
Robin H. Johnson52f5db22017-01-01 13:10:52 -0800[diff] [blame]12641 memprintf(err, "expects 1 argument: <status>; or 3 arguments: <status> reason <fmt>");
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12642 return ACT_RET_PRS_ERR;
12643 }
12644
12645 /* convert status code as integer */
12646 rule->arg.status.code = strtol(args[*orig_arg], &error, 10);
12647 if (*error != '\0' || rule->arg.status.code < 100 || rule->arg.status.code > 999) {
12648 memprintf(err, "expects an integer status code between 100 and 999");
12649 return ACT_RET_PRS_ERR;
12650 }
12651
12652 (*orig_arg)++;
Robin H. Johnson52f5db22017-01-01 13:10:52 -0800[diff] [blame]12653
12654 /* set custom reason string */
12655 rule->arg.status.reason = NULL; // If null, we use the default reason for the status code.
12656 if (*args[*orig_arg] && strcmp(args[*orig_arg], "reason") == 0 &&
12657 (*args[*orig_arg + 1] && strcmp(args[*orig_arg + 1], "if") != 0 && strcmp(args[*orig_arg + 1], "unless") != 0)) {
12658 (*orig_arg)++;
12659 rule->arg.status.reason = strdup(args[*orig_arg]);
12660 (*orig_arg)++;
12661 }
12662
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12663 return ACT_RET_PRS_OK;
12664}
12665
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12666/* This function executes the "capture" action. It executes a fetch expression,
12667 * turns the result into a string and puts it in a capture slot. It always
12668 * returns 1. If an error occurs the action is cancelled, but the rule
12669 * processing continues.
12670 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12671enum act_return http_action_req_capture(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12672 struct session *sess, struct stream *s, int flags)
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12673{
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12674 struct sample *key;
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12675 struct cap_hdr *h = rule->arg.cap.hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12676 char **cap = s->req_cap;
12677 int len;
12678
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12679 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]12680 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12681 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +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;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12688
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12689 len = key->data.u.str.len;
Willy Tarreaua9083d02015-05-08 15:27:59 +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);
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12694 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12695 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12696}
12697
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12698/* This function executes the "capture" action and store the result in a
12699 * capture slot if exists. It executes a fetch expression, turns the result
12700 * into a string and puts it in a capture slot. It always returns 1. If an
12701 * error occurs the action is cancelled, but the rule processing continues.
12702 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12703enum 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]12704 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12705{
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12706 struct sample *key;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12707 struct cap_hdr *h;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12708 char **cap = s->req_cap;
12709 struct proxy *fe = strm_fe(s);
12710 int len;
12711 int i;
12712
12713 /* Look for the original configuration. */
12714 for (h = fe->req_cap, i = fe->nb_req_cap - 1;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12715 h != NULL && i != rule->arg.capid.idx ;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12716 i--, h = h->next);
12717 if (!h)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12718 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12719
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12720 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]12721 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12722 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12723
12724 if (cap[h->index] == NULL)
12725 cap[h->index] = pool_alloc2(h->pool);
12726
12727 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12728 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12729
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12730 len = key->data.u.str.len;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12731 if (len > h->len)
12732 len = h->len;
12733
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12734 memcpy(cap[h->index], key->data.u.str.str, len);
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12735 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12736 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12737}
12738
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12739/* parse an "http-request capture" action. It takes a single argument which is
12740 * a sample fetch expression. It stores the expression into arg->act.p[0] and
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12741 * the allocated hdr_cap struct or the preallocated "id" into arg->act.p[1].
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12742 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12743 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12744enum act_parse_ret parse_http_req_capture(const char **args, int *orig_arg, struct proxy *px,
12745 struct act_rule *rule, char **err)
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12746{
12747 struct sample_expr *expr;
12748 struct cap_hdr *hdr;
12749 int cur_arg;
Willy Tarreau3986ac12015-05-08 16:13:42 +0200[diff] [blame]12750 int len = 0;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12751
12752 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12753 if (strcmp(args[cur_arg], "if") == 0 ||
12754 strcmp(args[cur_arg], "unless") == 0)
12755 break;
12756
12757 if (cur_arg < *orig_arg + 3) {
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12758 memprintf(err, "expects <expression> [ 'len' <length> | id <idx> ]");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12759 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12760 }
12761
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12762 cur_arg = *orig_arg;
12763 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12764 if (!expr)
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12765 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12766
12767 if (!(expr->fetch->val & SMP_VAL_FE_HRQ_HDR)) {
12768 memprintf(err,
12769 "fetch method '%s' extracts information from '%s', none of which is available here",
12770 args[cur_arg-1], sample_src_names(expr->fetch->use));
12771 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12772 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12773 }
12774
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12775 if (!args[cur_arg] || !*args[cur_arg]) {
12776 memprintf(err, "expects 'len or 'id'");
12777 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12778 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12779 }
12780
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12781 if (strcmp(args[cur_arg], "len") == 0) {
12782 cur_arg++;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12783
12784 if (!(px->cap & PR_CAP_FE)) {
12785 memprintf(err, "proxy '%s' has no frontend capability", px->id);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12786 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12787 }
12788
12789 proxy->conf.args.ctx = ARGC_CAP;
12790
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12791 if (!args[cur_arg]) {
12792 memprintf(err, "missing length value");
12793 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12794 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12795 }
12796 /* we copy the table name for now, it will be resolved later */
12797 len = atoi(args[cur_arg]);
12798 if (len <= 0) {
12799 memprintf(err, "length must be > 0");
12800 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12801 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12802 }
12803 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12804
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12805 if (!len) {
12806 memprintf(err, "a positive 'len' argument is mandatory");
12807 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12808 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12809 }
12810
Vincent Bernat02779b62016-04-03 13:48:43 +0200[diff] [blame]12811 hdr = calloc(1, sizeof(*hdr));
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12812 hdr->next = px->req_cap;
12813 hdr->name = NULL; /* not a header capture */
12814 hdr->namelen = 0;
12815 hdr->len = len;
12816 hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
12817 hdr->index = px->nb_req_cap++;
12818
12819 px->req_cap = hdr;
12820 px->to_log |= LW_REQHDR;
12821
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12822 rule->action = ACT_CUSTOM;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12823 rule->action_ptr = http_action_req_capture;
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12824 rule->arg.cap.expr = expr;
12825 rule->arg.cap.hdr = hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12826 }
12827
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12828 else if (strcmp(args[cur_arg], "id") == 0) {
12829 int id;
12830 char *error;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12831
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12832 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12833
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12834 if (!args[cur_arg]) {
12835 memprintf(err, "missing id value");
12836 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12837 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12838 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12839
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12840 id = strtol(args[cur_arg], &error, 10);
12841 if (*error != '\0') {
12842 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12843 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12844 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12845 }
12846 cur_arg++;
12847
12848 proxy->conf.args.ctx = ARGC_CAP;
12849
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12850 rule->action = ACT_CUSTOM;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12851 rule->action_ptr = http_action_req_capture_by_id;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12852 rule->arg.capid.expr = expr;
12853 rule->arg.capid.idx = id;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12854 }
12855
12856 else {
12857 memprintf(err, "expects 'len' or 'id', found '%s'", args[cur_arg]);
12858 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12859 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12860 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12861
12862 *orig_arg = cur_arg;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12863 return ACT_RET_PRS_OK;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12864}
12865
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12866/* This function executes the "capture" action and store the result in a
12867 * capture slot if exists. It executes a fetch expression, turns the result
12868 * into a string and puts it in a capture slot. It always returns 1. If an
12869 * error occurs the action is cancelled, but the rule processing continues.
12870 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12871enum 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]12872 struct session *sess, struct stream *s, int flags)
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12873{
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12874 struct sample *key;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12875 struct cap_hdr *h;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12876 char **cap = s->res_cap;
12877 struct proxy *fe = strm_fe(s);
12878 int len;
12879 int i;
12880
12881 /* Look for the original configuration. */
12882 for (h = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12883 h != NULL && i != rule->arg.capid.idx ;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12884 i--, h = h->next);
12885 if (!h)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12886 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12887
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12888 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]12889 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12890 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12891
12892 if (cap[h->index] == NULL)
12893 cap[h->index] = pool_alloc2(h->pool);
12894
12895 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12896 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12897
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12898 len = key->data.u.str.len;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12899 if (len > h->len)
12900 len = h->len;
12901
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12902 memcpy(cap[h->index], key->data.u.str.str, len);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12903 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12904 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12905}
12906
12907/* parse an "http-response capture" action. It takes a single argument which is
12908 * a sample fetch expression. It stores the expression into arg->act.p[0] and
12909 * the allocated hdr_cap struct od the preallocated id into arg->act.p[1].
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12910 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12911 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12912enum act_parse_ret parse_http_res_capture(const char **args, int *orig_arg, struct proxy *px,
12913 struct act_rule *rule, char **err)
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12914{
12915 struct sample_expr *expr;
12916 int cur_arg;
12917 int id;
12918 char *error;
12919
12920 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12921 if (strcmp(args[cur_arg], "if") == 0 ||
12922 strcmp(args[cur_arg], "unless") == 0)
12923 break;
12924
12925 if (cur_arg < *orig_arg + 3) {
Willy Tarreau29bdb1c2016-06-24 15:36:34 +0200[diff] [blame]12926 memprintf(err, "expects <expression> id <idx>");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12927 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12928 }
12929
12930 cur_arg = *orig_arg;
12931 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12932 if (!expr)
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12933 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12934
12935 if (!(expr->fetch->val & SMP_VAL_FE_HRS_HDR)) {
12936 memprintf(err,
12937 "fetch method '%s' extracts information from '%s', none of which is available here",
12938 args[cur_arg-1], sample_src_names(expr->fetch->use));
12939 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12940 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12941 }
12942
12943 if (!args[cur_arg] || !*args[cur_arg]) {
Willy Tarreau29bdb1c2016-06-24 15:36:34 +0200[diff] [blame]12944 memprintf(err, "expects 'id'");
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12945 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12946 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12947 }
12948
12949 if (strcmp(args[cur_arg], "id") != 0) {
12950 memprintf(err, "expects 'id', found '%s'", args[cur_arg]);
12951 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12952 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12953 }
12954
12955 cur_arg++;
12956
12957 if (!args[cur_arg]) {
12958 memprintf(err, "missing id value");
12959 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12960 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12961 }
12962
12963 id = strtol(args[cur_arg], &error, 10);
12964 if (*error != '\0') {
12965 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12966 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12967 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12968 }
12969 cur_arg++;
12970
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12971 proxy->conf.args.ctx = ARGC_CAP;
12972
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12973 rule->action = ACT_CUSTOM;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12974 rule->action_ptr = http_action_res_capture_by_id;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12975 rule->arg.capid.expr = expr;
12976 rule->arg.capid.idx = id;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12977
12978 *orig_arg = cur_arg;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12979 return ACT_RET_PRS_OK;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12980}
12981
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12982/*
12983 * Return the struct http_req_action_kw associated to a keyword.
12984 */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12985struct action_kw *action_http_req_custom(const char *kw)
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12986{
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]12987 return action_lookup(&http_req_keywords.list, kw);
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12988}
12989
12990/*
12991 * Return the struct http_res_action_kw associated to a keyword.
12992 */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12993struct action_kw *action_http_res_custom(const char *kw)
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12994{
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]12995 return action_lookup(&http_res_keywords.list, kw);
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12996}
12997
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]12998
12999/* "show errors" handler for the CLI. Returns 0 if wants to continue, 1 to stop
13000 * now.
13001 */
13002static int cli_parse_show_errors(char **args, struct appctx *appctx, void *private)
13003{
13004 if (!cli_has_level(appctx, ACCESS_LVL_OPER))
13005 return 1;
13006
Willy Tarreau234ba2d2016-11-25 08:39:10 +0100[diff] [blame]13007 if (*args[2]) {
13008 struct proxy *px;
13009
13010 px = proxy_find_by_name(args[2], 0, 0);
13011 if (px)
13012 appctx->ctx.errors.iid = px->uuid;
13013 else
13014 appctx->ctx.errors.iid = atoi(args[2]);
13015
13016 if (!appctx->ctx.errors.iid) {
13017 appctx->ctx.cli.msg = "No such proxy.\n";
13018 appctx->st0 = CLI_ST_PRINT;
13019 return 1;
13020 }
13021 }
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13022 else
Willy Tarreau234ba2d2016-11-25 08:39:10 +0100[diff] [blame]13023 appctx->ctx.errors.iid = -1; // dump all proxies
13024
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]13025 appctx->ctx.errors.flag = 0;
13026 if (strcmp(args[3], "request") == 0)
13027 appctx->ctx.errors.flag |= 4; // ignore response
13028 else if (strcmp(args[3], "response") == 0)
13029 appctx->ctx.errors.flag |= 2; // ignore request
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13030 appctx->ctx.errors.px = NULL;
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13031 return 0;
13032}
13033
13034/* This function dumps all captured errors onto the stream interface's
13035 * read buffer. It returns 0 if the output buffer is full and it needs
13036 * to be called again, otherwise non-zero.
13037 */
13038static int cli_io_handler_show_errors(struct appctx *appctx)
13039{
13040 struct stream_interface *si = appctx->owner;
13041 extern const char *monthname[12];
13042
13043 if (unlikely(si_ic(si)->flags & (CF_WRITE_ERROR|CF_SHUTW)))
13044 return 1;
13045
13046 chunk_reset(&trash);
13047
13048 if (!appctx->ctx.errors.px) {
13049 /* the function had not been called yet, let's prepare the
13050 * buffer for a response.
13051 */
13052 struct tm tm;
13053
13054 get_localtime(date.tv_sec, &tm);
13055 chunk_appendf(&trash, "Total events captured on [%02d/%s/%04d:%02d:%02d:%02d.%03d] : %u\n",
13056 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
13057 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(date.tv_usec/1000),
13058 error_snapshot_id);
13059
13060 if (bi_putchk(si_ic(si), &trash) == -1) {
13061 /* Socket buffer full. Let's try again later from the same point */
13062 si_applet_cant_put(si);
13063 return 0;
13064 }
13065
13066 appctx->ctx.errors.px = proxy;
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13067 appctx->ctx.errors.bol = 0;
13068 appctx->ctx.errors.ptr = -1;
13069 }
13070
13071 /* we have two inner loops here, one for the proxy, the other one for
13072 * the buffer.
13073 */
13074 while (appctx->ctx.errors.px) {
13075 struct error_snapshot *es;
13076
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]13077 if ((appctx->ctx.errors.flag & 1) == 0) {
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13078 es = &appctx->ctx.errors.px->invalid_req;
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]13079 if (appctx->ctx.errors.flag & 2) // skip req
13080 goto next;
13081 }
13082 else {
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13083 es = &appctx->ctx.errors.px->invalid_rep;
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]13084 if (appctx->ctx.errors.flag & 4) // skip resp
13085 goto next;
13086 }
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13087
13088 if (!es->when.tv_sec)
13089 goto next;
13090
13091 if (appctx->ctx.errors.iid >= 0 &&
13092 appctx->ctx.errors.px->uuid != appctx->ctx.errors.iid &&
13093 es->oe->uuid != appctx->ctx.errors.iid)
13094 goto next;
13095
13096 if (appctx->ctx.errors.ptr < 0) {
13097 /* just print headers now */
13098
13099 char pn[INET6_ADDRSTRLEN];
13100 struct tm tm;
13101 int port;
13102
13103 get_localtime(es->when.tv_sec, &tm);
13104 chunk_appendf(&trash, " \n[%02d/%s/%04d:%02d:%02d:%02d.%03d]",
13105 tm.tm_mday, monthname[tm.tm_mon], tm.tm_year+1900,
13106 tm.tm_hour, tm.tm_min, tm.tm_sec, (int)(es->when.tv_usec/1000));
13107
13108 switch (addr_to_str(&es->src, pn, sizeof(pn))) {
13109 case AF_INET:
13110 case AF_INET6:
13111 port = get_host_port(&es->src);
13112 break;
13113 default:
13114 port = 0;
13115 }
13116
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]13117 switch (appctx->ctx.errors.flag & 1) {
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13118 case 0:
13119 chunk_appendf(&trash,
13120 " frontend %s (#%d): invalid request\n"
13121 " backend %s (#%d)",
13122 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
13123 (es->oe->cap & PR_CAP_BE) ? es->oe->id : "<NONE>",
13124 (es->oe->cap & PR_CAP_BE) ? es->oe->uuid : -1);
13125 break;
13126 case 1:
13127 chunk_appendf(&trash,
13128 " backend %s (#%d): invalid response\n"
13129 " frontend %s (#%d)",
13130 appctx->ctx.errors.px->id, appctx->ctx.errors.px->uuid,
13131 es->oe->id, es->oe->uuid);
13132 break;
13133 }
13134
13135 chunk_appendf(&trash,
13136 ", server %s (#%d), event #%u\n"
13137 " src %s:%d, session #%d, session flags 0x%08x\n"
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]13138 " HTTP msg state %s(%d), msg flags 0x%08x, tx flags 0x%08x\n"
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13139 " HTTP chunk len %lld bytes, HTTP body len %lld bytes\n"
13140 " buffer flags 0x%08x, out %d bytes, total %lld bytes\n"
13141 " pending %d bytes, wrapping at %d, error at position %d:\n \n",
13142 es->srv ? es->srv->id : "<NONE>", es->srv ? es->srv->puid : -1,
13143 es->ev_id,
13144 pn, port, es->sid, es->s_flags,
Willy Tarreau10e61cb2017-01-04 14:51:22 +0100[diff] [blame]13145 http_msg_state_str(es->state), es->state, es->m_flags, es->t_flags,
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13146 es->m_clen, es->m_blen,
13147 es->b_flags, es->b_out, es->b_tot,
13148 es->len, es->b_wrap, es->pos);
13149
13150 if (bi_putchk(si_ic(si), &trash) == -1) {
13151 /* Socket buffer full. Let's try again later from the same point */
13152 si_applet_cant_put(si);
13153 return 0;
13154 }
13155 appctx->ctx.errors.ptr = 0;
13156 appctx->ctx.errors.sid = es->sid;
13157 }
13158
13159 if (appctx->ctx.errors.sid != es->sid) {
13160 /* the snapshot changed while we were dumping it */
13161 chunk_appendf(&trash,
13162 " WARNING! update detected on this snapshot, dump interrupted. Please re-check!\n");
13163 if (bi_putchk(si_ic(si), &trash) == -1) {
13164 si_applet_cant_put(si);
13165 return 0;
13166 }
13167 goto next;
13168 }
13169
13170 /* OK, ptr >= 0, so we have to dump the current line */
13171 while (es->buf && appctx->ctx.errors.ptr < es->len && appctx->ctx.errors.ptr < global.tune.bufsize) {
13172 int newptr;
13173 int newline;
13174
13175 newline = appctx->ctx.errors.bol;
13176 newptr = dump_text_line(&trash, es->buf, global.tune.bufsize, es->len, &newline, appctx->ctx.errors.ptr);
13177 if (newptr == appctx->ctx.errors.ptr)
13178 return 0;
13179
13180 if (bi_putchk(si_ic(si), &trash) == -1) {
13181 /* Socket buffer full. Let's try again later from the same point */
13182 si_applet_cant_put(si);
13183 return 0;
13184 }
13185 appctx->ctx.errors.ptr = newptr;
13186 appctx->ctx.errors.bol = newline;
13187 };
13188 next:
13189 appctx->ctx.errors.bol = 0;
13190 appctx->ctx.errors.ptr = -1;
Willy Tarreau35069f82016-11-25 09:16:37 +0100[diff] [blame]13191 appctx->ctx.errors.flag ^= 1;
13192 if (!(appctx->ctx.errors.flag & 1))
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13193 appctx->ctx.errors.px = appctx->ctx.errors.px->next;
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13194 }
13195
13196 /* dump complete */
13197 return 1;
13198}
13199
13200/* register cli keywords */
13201static struct cli_kw_list cli_kws = {{ },{
13202 { { "show", "errors", NULL },
13203 "show errors : report last request and response errors for each proxy",
13204 cli_parse_show_errors, cli_io_handler_show_errors, NULL,
13205 },
13206 {{},}
13207}};
13208
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]13209/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13210/* All supported ACL keywords must be declared here. */
13211/************************************************************************/
13212
13213/* Note: must not be declared <const> as its list will be overwritten.
13214 * Please take care of keeping this list alphabetically sorted.
13215 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]13216static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13217 { "base", "base", PAT_MATCH_STR },
13218 { "base_beg", "base", PAT_MATCH_BEG },
13219 { "base_dir", "base", PAT_MATCH_DIR },
13220 { "base_dom", "base", PAT_MATCH_DOM },
13221 { "base_end", "base", PAT_MATCH_END },
13222 { "base_len", "base", PAT_MATCH_LEN },
13223 { "base_reg", "base", PAT_MATCH_REG },
13224 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]13225
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13226 { "cook", "req.cook", PAT_MATCH_STR },
13227 { "cook_beg", "req.cook", PAT_MATCH_BEG },
13228 { "cook_dir", "req.cook", PAT_MATCH_DIR },
13229 { "cook_dom", "req.cook", PAT_MATCH_DOM },
13230 { "cook_end", "req.cook", PAT_MATCH_END },
13231 { "cook_len", "req.cook", PAT_MATCH_LEN },
13232 { "cook_reg", "req.cook", PAT_MATCH_REG },
13233 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13234
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13235 { "hdr", "req.hdr", PAT_MATCH_STR },
13236 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
13237 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
13238 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
13239 { "hdr_end", "req.hdr", PAT_MATCH_END },
13240 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
13241 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
13242 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13243
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13244 /* these two declarations uses strings with list storage (in place
13245 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
13246 * and delete functions are relative to the list management. The parse
13247 * and match method are related to the corresponding fetch methods. This
13248 * is very particular ACL declaration mode.
13249 */
13250 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
13251 { "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]13252
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13253 { "path", "path", PAT_MATCH_STR },
13254 { "path_beg", "path", PAT_MATCH_BEG },
13255 { "path_dir", "path", PAT_MATCH_DIR },
13256 { "path_dom", "path", PAT_MATCH_DOM },
13257 { "path_end", "path", PAT_MATCH_END },
13258 { "path_len", "path", PAT_MATCH_LEN },
13259 { "path_reg", "path", PAT_MATCH_REG },
13260 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13261
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13262 { "req_ver", "req.ver", PAT_MATCH_STR },
13263 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13264
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13265 { "scook", "res.cook", PAT_MATCH_STR },
13266 { "scook_beg", "res.cook", PAT_MATCH_BEG },
13267 { "scook_dir", "res.cook", PAT_MATCH_DIR },
13268 { "scook_dom", "res.cook", PAT_MATCH_DOM },
13269 { "scook_end", "res.cook", PAT_MATCH_END },
13270 { "scook_len", "res.cook", PAT_MATCH_LEN },
13271 { "scook_reg", "res.cook", PAT_MATCH_REG },
13272 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13273
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13274 { "shdr", "res.hdr", PAT_MATCH_STR },
13275 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
13276 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
13277 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
13278 { "shdr_end", "res.hdr", PAT_MATCH_END },
13279 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
13280 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
13281 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13282
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13283 { "url", "url", PAT_MATCH_STR },
13284 { "url_beg", "url", PAT_MATCH_BEG },
13285 { "url_dir", "url", PAT_MATCH_DIR },
13286 { "url_dom", "url", PAT_MATCH_DOM },
13287 { "url_end", "url", PAT_MATCH_END },
13288 { "url_len", "url", PAT_MATCH_LEN },
13289 { "url_reg", "url", PAT_MATCH_REG },
13290 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13291
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13292 { "urlp", "urlp", PAT_MATCH_STR },
13293 { "urlp_beg", "urlp", PAT_MATCH_BEG },
13294 { "urlp_dir", "urlp", PAT_MATCH_DIR },
13295 { "urlp_dom", "urlp", PAT_MATCH_DOM },
13296 { "urlp_end", "urlp", PAT_MATCH_END },
13297 { "urlp_len", "urlp", PAT_MATCH_LEN },
13298 { "urlp_reg", "urlp", PAT_MATCH_REG },
13299 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13300
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]13301 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13302}};
13303
13304/************************************************************************/
13305/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]13306/************************************************************************/
13307/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]13308static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13309 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13310 { "base32", smp_fetch_base32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13311 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
13312
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]13313 /* capture are allocated and are permanent in the stream */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]13314 { "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]13315
13316 /* retrieve these captures from the HTTP logs */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]13317 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
13318 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
13319 { "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]13320
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]13321 { "capture.res.hdr", smp_fetch_capture_header_res, ARG1(1,SINT), NULL, SMP_T_STR, SMP_USE_HRSHP },
13322 { "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]13323
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13324 /* cookie is valid in both directions (eg: for "stick ...") but cook*
13325 * are only here to match the ACL's name, are request-only and are used
13326 * for ACL compatibility only.
13327 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13328 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
13329 { "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]13330 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
13331 { "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]13332
13333 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
13334 * only here to match the ACL's name, are request-only and are used for
13335 * ACL compatibility only.
13336 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13337 { "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]13338 { "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]13339 { "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]13340 { "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]13341
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]13342 { "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]13343 { "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]13344 { "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]13345 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13346 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]13347 { "query", smp_fetch_query, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13348
13349 /* HTTP protocol on the request path */
13350 { "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]13351 { "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]13352
13353 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13354 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
13355 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13356
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]13357 { "req.body", smp_fetch_body, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13358 { "req.body_len", smp_fetch_body_len, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
13359 { "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]13360 { "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]13361
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13362 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13363 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
13364 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13365
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13366 /* 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]13367 { "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]13368 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
13369 { "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]13370
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13371 { "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]13372 { "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]13373 { "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]13374 { "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]13375 { "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]13376 { "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]13377 { "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]13378
13379 /* 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]13380 { "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]13381 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
13382 { "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]13383
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13384 { "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]13385 { "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]13386 { "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]13387 { "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]13388 { "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]13389 { "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]13390 { "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]13391
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13392 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13393 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13394 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
13395 { "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]13396 { "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]13397
13398 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13399 { "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]13400 { "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]13401 { "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]13402 { "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]13403
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13404 { "status", smp_fetch_stcode, 0, NULL, SMP_T_SINT, SMP_USE_HRSHP },
Thierry Fournier0e00dca2016-04-07 15:47:40 +0200[diff] [blame]13405 { "unique-id", smp_fetch_uniqueid, 0, NULL, SMP_T_STR, SMP_SRC_L4SRV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13406 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13407 { "url32", smp_fetch_url32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]13408 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13409 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13410 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]13411 { "url_param", smp_fetch_url_param, ARG2(0,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
13412 { "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]13413 { "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]13414 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]13415}};
13416
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13417
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13418/************************************************************************/
13419/* All supported converter keywords must be declared here. */
13420/************************************************************************/
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13421/* Note: must not be declared <const> as its list will be overwritten */
13422static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13423 { "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]13424 { "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]13425 { "capture-req", smp_conv_req_capture, ARG1(1,SINT), NULL, SMP_T_STR, SMP_T_STR},
13426 { "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]13427 { "url_dec", sample_conv_url_dec, 0, NULL, SMP_T_STR, SMP_T_STR},
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13428 { NULL, NULL, 0, 0, 0 },
13429}};
13430
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]13431
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13432/************************************************************************/
13433/* All supported http-request action keywords must be declared here. */
13434/************************************************************************/
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]13435struct action_kw_list http_req_actions = {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13436 .kw = {
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]13437 { "capture", parse_http_req_capture },
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13438 { "set-method", parse_set_req_line },
13439 { "set-path", parse_set_req_line },
13440 { "set-query", parse_set_req_line },
13441 { "set-uri", parse_set_req_line },
Willy Tarreaucb703b02015-04-03 09:52:01 +0200[diff] [blame]13442 { NULL, NULL }
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13443 }
13444};
13445
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]13446struct action_kw_list http_res_actions = {
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13447 .kw = {
13448 { "capture", parse_http_res_capture },
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]13449 { "set-status", parse_http_set_status },
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13450 { NULL, NULL }
13451 }
13452};
13453
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13454__attribute__((constructor))
13455static void __http_protocol_init(void)
13456{
13457 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]13458 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13459 sample_register_convs(&sample_conv_kws);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13460 http_req_keywords_register(&http_req_actions);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13461 http_res_keywords_register(&http_res_actions);
Willy Tarreau12207b32016-11-22 19:48:51 +0100[diff] [blame]13462 cli_register_kw(&cli_kws);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13463}
13464
13465
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]13466/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]13467 * Local variables:
13468 * c-indent-level: 8
13469 * c-basic-offset: 8
13470 * End:
13471 */