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git01.mediatek.com / haproxy / 2fb2880caf8a697dc765a3692c97d6bc8f7a0b7a / . / src / proto_http.c
blob: ab608fedf90974a1145627913cc247d58e4179bd [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>
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]42#include <types/filters.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]43#include <types/global.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]44
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]45#include <proto/acl.h>
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]46#include <proto/action.h>
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]47#include <proto/arg.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]48#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]49#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]50#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]51#include <proto/checks.h>
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]52#include <proto/compression.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]53#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]54#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]55#include <proto/filters.h>
Willy Tarreau03fa5df2010-05-24 21:02:37 +0200[diff] [blame]56#include <proto/frontend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]57#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]58#include <proto/hdr_idx.h>
Thierry FOURNIERed66c292013-11-28 11:05:19 +0100[diff] [blame]59#include <proto/pattern.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]60#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]61#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]62#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]63#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]64#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]65#include <proto/server.h>
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]66#include <proto/stream.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]67#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]68#include <proto/task.h>
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]69#include <proto/pattern.h>
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]70#include <proto/vars.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]71
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]72const char HTTP_100[] =
73 "HTTP/1.1 100 Continue\r\n\r\n";
74
75const struct chunk http_100_chunk = {
76 .str = (char *)&HTTP_100,
77 .len = sizeof(HTTP_100)-1
78};
79
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]80/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]81const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]82 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]83 "Content-length: 0\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]84 "Location: "; /* not terminated since it will be concatenated with the URL */
85
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]86const char *HTTP_302 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]87 "HTTP/1.1 302 Found\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]88 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]89 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]90 "Location: "; /* not terminated since it will be concatenated with the URL */
91
92/* same as 302 except that the browser MUST retry with the GET method */
93const char *HTTP_303 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]94 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]95 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]96 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]97 "Location: "; /* not terminated since it will be concatenated with the URL */
98
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]99
100/* same as 302 except that the browser MUST retry with the same method */
101const char *HTTP_307 =
102 "HTTP/1.1 307 Temporary Redirect\r\n"
103 "Cache-Control: no-cache\r\n"
104 "Content-length: 0\r\n"
105 "Location: "; /* not terminated since it will be concatenated with the URL */
106
107/* same as 301 except that the browser MUST retry with the same method */
108const char *HTTP_308 =
109 "HTTP/1.1 308 Permanent Redirect\r\n"
110 "Content-length: 0\r\n"
111 "Location: "; /* not terminated since it will be concatenated with the URL */
112
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]113/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
114const char *HTTP_401_fmt =
115 "HTTP/1.0 401 Unauthorized\r\n"
116 "Cache-Control: no-cache\r\n"
117 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]118 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]119 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
120 "\r\n"
121 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
122
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]123const char *HTTP_407_fmt =
124 "HTTP/1.0 407 Unauthorized\r\n"
125 "Cache-Control: no-cache\r\n"
126 "Connection: close\r\n"
127 "Content-Type: text/html\r\n"
128 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
129 "\r\n"
Godbach1f1fae62014-12-17 16:32:05 +0800[diff] [blame]130 "<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]131
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]132
133const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]134 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]135 [HTTP_ERR_400] = 400,
136 [HTTP_ERR_403] = 403,
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]137 [HTTP_ERR_405] = 405,
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]138 [HTTP_ERR_408] = 408,
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]139 [HTTP_ERR_429] = 429,
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]140 [HTTP_ERR_500] = 500,
141 [HTTP_ERR_502] = 502,
142 [HTTP_ERR_503] = 503,
143 [HTTP_ERR_504] = 504,
144};
145
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]146static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]147 [HTTP_ERR_200] =
148 "HTTP/1.0 200 OK\r\n"
149 "Cache-Control: no-cache\r\n"
150 "Connection: close\r\n"
151 "Content-Type: text/html\r\n"
152 "\r\n"
153 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
154
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]155 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]156 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]157 "Cache-Control: no-cache\r\n"
158 "Connection: close\r\n"
159 "Content-Type: text/html\r\n"
160 "\r\n"
161 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
162
163 [HTTP_ERR_403] =
164 "HTTP/1.0 403 Forbidden\r\n"
165 "Cache-Control: no-cache\r\n"
166 "Connection: close\r\n"
167 "Content-Type: text/html\r\n"
168 "\r\n"
169 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
170
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]171 [HTTP_ERR_405] =
172 "HTTP/1.0 405 Method Not Allowed\r\n"
173 "Cache-Control: no-cache\r\n"
174 "Connection: close\r\n"
175 "Content-Type: text/html\r\n"
176 "\r\n"
177 "<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",
178
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]179 [HTTP_ERR_408] =
180 "HTTP/1.0 408 Request Time-out\r\n"
181 "Cache-Control: no-cache\r\n"
182 "Connection: close\r\n"
183 "Content-Type: text/html\r\n"
184 "\r\n"
185 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
186
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]187 [HTTP_ERR_429] =
188 "HTTP/1.0 429 Too Many Requests\r\n"
189 "Cache-Control: no-cache\r\n"
190 "Connection: close\r\n"
191 "Content-Type: text/html\r\n"
192 "\r\n"
193 "<html><body><h1>429 Too Many Requests</h1>\nYou have sent too many requests in a given amount of time.\n</body></html>\n",
194
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]195 [HTTP_ERR_500] =
196 "HTTP/1.0 500 Server Error\r\n"
197 "Cache-Control: no-cache\r\n"
198 "Connection: close\r\n"
199 "Content-Type: text/html\r\n"
200 "\r\n"
201 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
202
203 [HTTP_ERR_502] =
204 "HTTP/1.0 502 Bad Gateway\r\n"
205 "Cache-Control: no-cache\r\n"
206 "Connection: close\r\n"
207 "Content-Type: text/html\r\n"
208 "\r\n"
209 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
210
211 [HTTP_ERR_503] =
212 "HTTP/1.0 503 Service Unavailable\r\n"
213 "Cache-Control: no-cache\r\n"
214 "Connection: close\r\n"
215 "Content-Type: text/html\r\n"
216 "\r\n"
217 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
218
219 [HTTP_ERR_504] =
220 "HTTP/1.0 504 Gateway Time-out\r\n"
221 "Cache-Control: no-cache\r\n"
222 "Connection: close\r\n"
223 "Content-Type: text/html\r\n"
224 "\r\n"
225 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
226
227};
228
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]229/* status codes available for the stats admin page (strictly 4 chars length) */
230const char *stat_status_codes[STAT_STATUS_SIZE] = {
231 [STAT_STATUS_DENY] = "DENY",
232 [STAT_STATUS_DONE] = "DONE",
233 [STAT_STATUS_ERRP] = "ERRP",
234 [STAT_STATUS_EXCD] = "EXCD",
235 [STAT_STATUS_NONE] = "NONE",
236 [STAT_STATUS_PART] = "PART",
237 [STAT_STATUS_UNKN] = "UNKN",
238};
239
240
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]241/* List head of all known action keywords for "http-request" */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]242struct action_kw_list http_req_keywords = {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]243 .list = LIST_HEAD_INIT(http_req_keywords.list)
244};
245
246/* List head of all known action keywords for "http-response" */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]247struct action_kw_list http_res_keywords = {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]248 .list = LIST_HEAD_INIT(http_res_keywords.list)
249};
250
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]251/* We must put the messages here since GCC cannot initialize consts depending
252 * on strlen().
253 */
254struct chunk http_err_chunks[HTTP_ERR_SIZE];
255
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]256/* this struct is used between calls to smp_fetch_hdr() or smp_fetch_cookie() */
257static struct hdr_ctx static_hdr_ctx;
258
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]259#define FD_SETS_ARE_BITFIELDS
260#ifdef FD_SETS_ARE_BITFIELDS
261/*
262 * This map is used with all the FD_* macros to check whether a particular bit
263 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
264 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
265 * byte should be encoded. Be careful to always pass bytes from 0 to 255
266 * exclusively to the macros.
267 */
268fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
269fd_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]270fd_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]271
272#else
273#error "Check if your OS uses bitfields for fd_sets"
274#endif
275
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]276static 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]277
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]278/* This function returns a reason associated with the HTTP status.
279 * This function never fails, a message is always returned.
280 */
281const char *get_reason(unsigned int status)
282{
283 switch (status) {
284 case 100: return "Continue";
285 case 101: return "Switching Protocols";
286 case 102: return "Processing";
287 case 200: return "OK";
288 case 201: return "Created";
289 case 202: return "Accepted";
290 case 203: return "Non-Authoritative Information";
291 case 204: return "No Content";
292 case 205: return "Reset Content";
293 case 206: return "Partial Content";
294 case 207: return "Multi-Status";
295 case 210: return "Content Different";
296 case 226: return "IM Used";
297 case 300: return "Multiple Choices";
298 case 301: return "Moved Permanently";
299 case 302: return "Moved Temporarily";
300 case 303: return "See Other";
301 case 304: return "Not Modified";
302 case 305: return "Use Proxy";
303 case 307: return "Temporary Redirect";
304 case 308: return "Permanent Redirect";
305 case 310: return "Too many Redirects";
306 case 400: return "Bad Request";
307 case 401: return "Unauthorized";
308 case 402: return "Payment Required";
309 case 403: return "Forbidden";
310 case 404: return "Not Found";
311 case 405: return "Method Not Allowed";
312 case 406: return "Not Acceptable";
313 case 407: return "Proxy Authentication Required";
314 case 408: return "Request Time-out";
315 case 409: return "Conflict";
316 case 410: return "Gone";
317 case 411: return "Length Required";
318 case 412: return "Precondition Failed";
319 case 413: return "Request Entity Too Large";
320 case 414: return "Request-URI Too Long";
321 case 415: return "Unsupported Media Type";
322 case 416: return "Requested range unsatisfiable";
323 case 417: return "Expectation failed";
324 case 418: return "I'm a teapot";
325 case 422: return "Unprocessable entity";
326 case 423: return "Locked";
327 case 424: return "Method failure";
328 case 425: return "Unordered Collection";
329 case 426: return "Upgrade Required";
330 case 428: return "Precondition Required";
331 case 429: return "Too Many Requests";
332 case 431: return "Request Header Fields Too Large";
333 case 449: return "Retry With";
334 case 450: return "Blocked by Windows Parental Controls";
335 case 451: return "Unavailable For Legal Reasons";
336 case 456: return "Unrecoverable Error";
337 case 499: return "client has closed connection";
338 case 500: return "Internal Server Error";
339 case 501: return "Not Implemented";
340 case 502: return "Bad Gateway ou Proxy Error";
341 case 503: return "Service Unavailable";
342 case 504: return "Gateway Time-out";
343 case 505: return "HTTP Version not supported";
344 case 506: return "Variant also negociate";
345 case 507: return "Insufficient storage";
346 case 508: return "Loop detected";
347 case 509: return "Bandwidth Limit Exceeded";
348 case 510: return "Not extended";
349 case 511: return "Network authentication required";
350 case 520: return "Web server is returning an unknown error";
351 default:
352 switch (status) {
353 case 100 ... 199: return "Informational";
354 case 200 ... 299: return "Success";
355 case 300 ... 399: return "Redirection";
356 case 400 ... 499: return "Client Error";
357 case 500 ... 599: return "Server Error";
358 default: return "Other";
359 }
360 }
361}
362
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]363void init_proto_http()
364{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]365 int i;
366 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]367 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]368
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]369 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
370 if (!http_err_msgs[msg]) {
371 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
372 abort();
373 }
374
375 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
376 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
377 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]378
379 /* initialize the log header encoding map : '{|}"#' should be encoded with
380 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
381 * URL encoding only requires '"', '#' to be encoded as well as non-
382 * printable characters above.
383 */
384 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
385 memset(url_encode_map, 0, sizeof(url_encode_map));
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]386 memset(http_encode_map, 0, sizeof(url_encode_map));
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]387 for (i = 0; i < 32; i++) {
388 FD_SET(i, hdr_encode_map);
389 FD_SET(i, url_encode_map);
390 }
391 for (i = 127; i < 256; i++) {
392 FD_SET(i, hdr_encode_map);
393 FD_SET(i, url_encode_map);
394 }
395
396 tmp = "\"#{|}";
397 while (*tmp) {
398 FD_SET(*tmp, hdr_encode_map);
399 tmp++;
400 }
401
402 tmp = "\"#";
403 while (*tmp) {
404 FD_SET(*tmp, url_encode_map);
405 tmp++;
406 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]407
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]408 /* initialize the http header encoding map. The draft httpbis define the
409 * header content as:
410 *
411 * HTTP-message = start-line
412 * *( header-field CRLF )
413 * CRLF
414 * [ message-body ]
415 * header-field = field-name ":" OWS field-value OWS
416 * field-value = *( field-content / obs-fold )
417 * field-content = field-vchar [ 1*( SP / HTAB ) field-vchar ]
418 * obs-fold = CRLF 1*( SP / HTAB )
419 * field-vchar = VCHAR / obs-text
420 * VCHAR = %x21-7E
421 * obs-text = %x80-FF
422 *
423 * All the chars are encoded except "VCHAR", "obs-text", SP and HTAB.
424 * The encoded chars are form 0x00 to 0x08, 0x0a to 0x1f and 0x7f. The
425 * "obs-fold" is volontary forgotten because haproxy remove this.
426 */
427 memset(http_encode_map, 0, sizeof(http_encode_map));
428 for (i = 0x00; i <= 0x08; i++)
429 FD_SET(i, http_encode_map);
430 for (i = 0x0a; i <= 0x1f; i++)
431 FD_SET(i, http_encode_map);
432 FD_SET(0x7f, http_encode_map);
433
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]434 /* memory allocations */
Willy Tarreau63986c72015-04-03 22:55:33 +0200[diff] [blame]435 pool2_http_txn = create_pool("http_txn", sizeof(struct http_txn), MEM_F_SHARED);
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]436 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]437 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]438}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]439
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]440/*
441 * We have 26 list of methods (1 per first letter), each of which can have
442 * up to 3 entries (2 valid, 1 null).
443 */
444struct http_method_desc {
Willy Tarreauc8987b32013-12-06 23:43:17 +0100[diff] [blame]445 enum http_meth_t meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]446 int len;
447 const char text[8];
448};
449
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]450const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]451 ['C' - 'A'] = {
452 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
453 },
454 ['D' - 'A'] = {
455 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
456 },
457 ['G' - 'A'] = {
458 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
459 },
460 ['H' - 'A'] = {
461 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
462 },
Christopher Fauletd57ad642015-07-31 14:26:57 +0200[diff] [blame]463 ['O' - 'A'] = {
464 [0] = { .meth = HTTP_METH_OPTIONS , .len=7, .text="OPTIONS" },
465 },
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]466 ['P' - 'A'] = {
467 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
468 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
469 },
470 ['T' - 'A'] = {
471 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
472 },
473 /* rest is empty like this :
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]474 * [0] = { .meth = HTTP_METH_OTHER , .len=0, .text="" },
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]475 */
476};
477
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]478const struct http_method_name http_known_methods[HTTP_METH_OTHER] = {
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]479 [HTTP_METH_OPTIONS] = { "OPTIONS", 7 },
480 [HTTP_METH_GET] = { "GET", 3 },
481 [HTTP_METH_HEAD] = { "HEAD", 4 },
482 [HTTP_METH_POST] = { "POST", 4 },
483 [HTTP_METH_PUT] = { "PUT", 3 },
484 [HTTP_METH_DELETE] = { "DELETE", 6 },
485 [HTTP_METH_TRACE] = { "TRACE", 5 },
486 [HTTP_METH_CONNECT] = { "CONNECT", 7 },
487};
488
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]489/* 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]490 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]491 * RFC2616 for those chars.
492 */
493
494const char http_is_spht[256] = {
495 [' '] = 1, ['\t'] = 1,
496};
497
498const char http_is_crlf[256] = {
499 ['\r'] = 1, ['\n'] = 1,
500};
501
502const char http_is_lws[256] = {
503 [' '] = 1, ['\t'] = 1,
504 ['\r'] = 1, ['\n'] = 1,
505};
506
507const char http_is_sep[256] = {
508 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
509 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
510 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
511 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
512 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
513};
514
515const char http_is_ctl[256] = {
516 [0 ... 31] = 1,
517 [127] = 1,
518};
519
520/*
521 * A token is any ASCII char that is neither a separator nor a CTL char.
522 * Do not overwrite values in assignment since gcc-2.95 will not handle
523 * them correctly. Instead, define every non-CTL char's status.
524 */
525const char http_is_token[256] = {
526 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
527 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
528 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
529 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
530 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
531 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
532 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
533 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
534 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
535 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
536 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
537 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
538 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
539 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
540 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
541 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
542 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
543 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
544 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
545 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
546 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
547 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
548 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
549 ['|'] = 1, ['}'] = 0, ['~'] = 1,
550};
551
552
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]553/*
554 * An http ver_token is any ASCII which can be found in an HTTP version,
555 * which includes 'H', 'T', 'P', '/', '.' and any digit.
556 */
557const char http_is_ver_token[256] = {
558 ['.'] = 1, ['/'] = 1,
559 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
560 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
Thierry FOURNIER63d692c2015-02-28 19:03:56 +0100[diff] [blame]561 ['H'] = 1, ['P'] = 1, ['R'] = 1, ['S'] = 1, ['T'] = 1,
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]562};
563
564
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]565/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]566 * Adds a header and its CRLF at the tail of the message's buffer, just before
567 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]568 * The header is also automatically added to the index <hdr_idx>, and the end
569 * of headers is automatically adjusted. The number of bytes added is returned
570 * on success, otherwise <0 is returned indicating an error.
571 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]572int 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]573{
574 int bytes, len;
575
576 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]577 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]578 if (!bytes)
579 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]580 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]581 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
582}
583
584/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]585 * Adds a header and its CRLF at the tail of the message's buffer, just before
586 * 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]587 * the buffer is only opened and the space reserved, but nothing is copied.
588 * The header is also automatically added to the index <hdr_idx>, and the end
589 * of headers is automatically adjusted. The number of bytes added is returned
590 * on success, otherwise <0 is returned indicating an error.
591 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]592int http_header_add_tail2(struct http_msg *msg,
593 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]594{
595 int bytes;
596
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]597 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]598 if (!bytes)
599 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]600 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]601 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
602}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]603
604/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]605 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
606 * If so, returns the position of the first non-space character relative to
607 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
608 * to return a pointer to the place after the first space. Returns 0 if the
609 * header name does not match. Checks are case-insensitive.
610 */
611int http_header_match2(const char *hdr, const char *end,
612 const char *name, int len)
613{
614 const char *val;
615
616 if (hdr + len >= end)
617 return 0;
618 if (hdr[len] != ':')
619 return 0;
620 if (strncasecmp(hdr, name, len) != 0)
621 return 0;
622 val = hdr + len + 1;
623 while (val < end && HTTP_IS_SPHT(*val))
624 val++;
625 if ((val >= end) && (len + 2 <= end - hdr))
626 return len + 2; /* we may replace starting from second space */
627 return val - hdr;
628}
629
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]630/* Find the first or next occurrence of header <name> in message buffer <sol>
631 * using headers index <idx>, and return it in the <ctx> structure. This
632 * structure holds everything necessary to use the header and find next
633 * occurrence. If its <idx> member is 0, the header is searched from the
634 * beginning. Otherwise, the next occurrence is returned. The function returns
635 * 1 when it finds a value, and 0 when there is no more. It is very similar to
636 * http_find_header2() except that it is designed to work with full-line headers
637 * whose comma is not a delimiter but is part of the syntax. As a special case,
638 * if ctx->val is NULL when searching for a new values of a header, the current
639 * header is rescanned. This allows rescanning after a header deletion.
640 */
641int http_find_full_header2(const char *name, int len,
642 char *sol, struct hdr_idx *idx,
643 struct hdr_ctx *ctx)
644{
645 char *eol, *sov;
646 int cur_idx, old_idx;
647
648 cur_idx = ctx->idx;
649 if (cur_idx) {
650 /* We have previously returned a header, let's search another one */
651 sol = ctx->line;
652 eol = sol + idx->v[cur_idx].len;
653 goto next_hdr;
654 }
655
656 /* first request for this header */
657 sol += hdr_idx_first_pos(idx);
658 old_idx = 0;
659 cur_idx = hdr_idx_first_idx(idx);
660 while (cur_idx) {
661 eol = sol + idx->v[cur_idx].len;
662
663 if (len == 0) {
664 /* No argument was passed, we want any header.
665 * To achieve this, we simply build a fake request. */
666 while (sol + len < eol && sol[len] != ':')
667 len++;
668 name = sol;
669 }
670
671 if ((len < eol - sol) &&
672 (sol[len] == ':') &&
673 (strncasecmp(sol, name, len) == 0)) {
674 ctx->del = len;
675 sov = sol + len + 1;
676 while (sov < eol && http_is_lws[(unsigned char)*sov])
677 sov++;
678
679 ctx->line = sol;
680 ctx->prev = old_idx;
681 ctx->idx = cur_idx;
682 ctx->val = sov - sol;
683 ctx->tws = 0;
684 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
685 eol--;
686 ctx->tws++;
687 }
688 ctx->vlen = eol - sov;
689 return 1;
690 }
691 next_hdr:
692 sol = eol + idx->v[cur_idx].cr + 1;
693 old_idx = cur_idx;
694 cur_idx = idx->v[cur_idx].next;
695 }
696 return 0;
697}
698
Willy Tarreauc90dc232015-02-20 13:51:36 +0100[diff] [blame]699/* Find the first or next header field in message buffer <sol> using headers
700 * index <idx>, and return it in the <ctx> structure. This structure holds
701 * everything necessary to use the header and find next occurrence. If its
702 * <idx> member is 0, the first header is retrieved. Otherwise, the next
703 * occurrence is returned. The function returns 1 when it finds a value, and
704 * 0 when there is no more. It is equivalent to http_find_full_header2() with
705 * no header name.
706 */
707int http_find_next_header(char *sol, struct hdr_idx *idx, struct hdr_ctx *ctx)
708{
709 char *eol, *sov;
710 int cur_idx, old_idx;
711 int len;
712
713 cur_idx = ctx->idx;
714 if (cur_idx) {
715 /* We have previously returned a header, let's search another one */
716 sol = ctx->line;
717 eol = sol + idx->v[cur_idx].len;
718 goto next_hdr;
719 }
720
721 /* first request for this header */
722 sol += hdr_idx_first_pos(idx);
723 old_idx = 0;
724 cur_idx = hdr_idx_first_idx(idx);
725 while (cur_idx) {
726 eol = sol + idx->v[cur_idx].len;
727
728 len = 0;
729 while (1) {
730 if (len >= eol - sol)
731 goto next_hdr;
732 if (sol[len] == ':')
733 break;
734 len++;
735 }
736
737 ctx->del = len;
738 sov = sol + len + 1;
739 while (sov < eol && http_is_lws[(unsigned char)*sov])
740 sov++;
741
742 ctx->line = sol;
743 ctx->prev = old_idx;
744 ctx->idx = cur_idx;
745 ctx->val = sov - sol;
746 ctx->tws = 0;
747
748 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
749 eol--;
750 ctx->tws++;
751 }
752 ctx->vlen = eol - sov;
753 return 1;
754
755 next_hdr:
756 sol = eol + idx->v[cur_idx].cr + 1;
757 old_idx = cur_idx;
758 cur_idx = idx->v[cur_idx].next;
759 }
760 return 0;
761}
762
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]763/* Find the end of the header value contained between <s> and <e>. See RFC2616,
764 * par 2.2 for more information. Note that it requires a valid header to return
765 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]766 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]767char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]768{
769 int quoted, qdpair;
770
771 quoted = qdpair = 0;
772 for (; s < e; s++) {
773 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]774 else if (quoted) {
775 if (*s == '\\') qdpair = 1;
776 else if (*s == '"') quoted = 0;
777 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]778 else if (*s == '"') quoted = 1;
779 else if (*s == ',') return s;
780 }
781 return s;
782}
783
784/* Find the first or next occurrence of header <name> in message buffer <sol>
785 * using headers index <idx>, and return it in the <ctx> structure. This
786 * structure holds everything necessary to use the header and find next
787 * occurrence. If its <idx> member is 0, the header is searched from the
788 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]789 * 1 when it finds a value, and 0 when there is no more. It is designed to work
790 * with headers defined as comma-separated lists. As a special case, if ctx->val
791 * is NULL when searching for a new values of a header, the current header is
792 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]793 */
794int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]795 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]796 struct hdr_ctx *ctx)
797{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]798 char *eol, *sov;
799 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]800
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]801 cur_idx = ctx->idx;
802 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]803 /* We have previously returned a value, let's search
804 * another one on the same line.
805 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]806 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]807 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]808 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]809 eol = sol + idx->v[cur_idx].len;
810
811 if (sov >= eol)
812 /* no more values in this header */
813 goto next_hdr;
814
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]815 /* values remaining for this header, skip the comma but save it
816 * for later use (eg: for header deletion).
817 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]818 sov++;
819 while (sov < eol && http_is_lws[(unsigned char)*sov])
820 sov++;
821
822 goto return_hdr;
823 }
824
825 /* first request for this header */
826 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]827 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]828 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]829 while (cur_idx) {
830 eol = sol + idx->v[cur_idx].len;
831
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]832 if (len == 0) {
833 /* No argument was passed, we want any header.
834 * To achieve this, we simply build a fake request. */
835 while (sol + len < eol && sol[len] != ':')
836 len++;
837 name = sol;
838 }
839
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]840 if ((len < eol - sol) &&
841 (sol[len] == ':') &&
842 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]843 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]844 sov = sol + len + 1;
845 while (sov < eol && http_is_lws[(unsigned char)*sov])
846 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]847
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]848 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]849 ctx->prev = old_idx;
850 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]851 ctx->idx = cur_idx;
852 ctx->val = sov - sol;
853
854 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]855 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]856 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]857 eol--;
858 ctx->tws++;
859 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]860 ctx->vlen = eol - sov;
861 return 1;
862 }
863 next_hdr:
864 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]865 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]866 cur_idx = idx->v[cur_idx].next;
867 }
868 return 0;
869}
870
871int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]872 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]873 struct hdr_ctx *ctx)
874{
875 return http_find_header2(name, strlen(name), sol, idx, ctx);
876}
877
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]878/* Remove one value of a header. This only works on a <ctx> returned by one of
879 * the http_find_header functions. The value is removed, as well as surrounding
880 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]881 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]882 * message <msg>. The new index is returned. If it is zero, it means there is
883 * no more header, so any processing may stop. The ctx is always left in a form
884 * that can be handled by http_find_header2() to find next occurrence.
885 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]886int 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]887{
888 int cur_idx = ctx->idx;
889 char *sol = ctx->line;
890 struct hdr_idx_elem *hdr;
891 int delta, skip_comma;
892
893 if (!cur_idx)
894 return 0;
895
896 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]897 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]898 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]899 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]900 http_msg_move_end(msg, delta);
901 idx->used--;
902 hdr->len = 0; /* unused entry */
903 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]904 if (idx->tail == ctx->idx)
905 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]906 ctx->idx = ctx->prev; /* walk back to the end of previous header */
Willy Tarreau7c1c2172015-01-07 17:23:50 +0100[diff] [blame]907 ctx->line -= idx->v[ctx->idx].len + idx->v[ctx->idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]908 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]909 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]910 return ctx->idx;
911 }
912
913 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]914 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
915 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]916 */
917
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]918 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]919 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]920 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]921 NULL, 0);
922 hdr->len += delta;
923 http_msg_move_end(msg, delta);
924 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]925 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]926 return ctx->idx;
927}
928
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]929/* This function handles a server error at the stream interface level. The
930 * stream interface is assumed to be already in a closed state. An optional
931 * message is copied into the input buffer, and an HTTP status code stored.
932 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]933 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]934 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]935static void http_server_error(struct stream *s, struct stream_interface *si,
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]936 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]937{
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]938 FLT_STRM_CB(s, flt_http_reply(s, status, msg));
Willy Tarreau2bb4a962014-11-28 11:11:05 +0100[diff] [blame]939 channel_auto_read(si_oc(si));
940 channel_abort(si_oc(si));
941 channel_auto_close(si_oc(si));
942 channel_erase(si_oc(si));
943 channel_auto_close(si_ic(si));
944 channel_auto_read(si_ic(si));
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]945 if (status > 0 && msg) {
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]946 s->txn->status = status;
Willy Tarreau2bb4a962014-11-28 11:11:05 +0100[diff] [blame]947 bo_inject(si_ic(si), msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]948 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]949 if (!(s->flags & SF_ERR_MASK))
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]950 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]951 if (!(s->flags & SF_FINST_MASK))
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]952 s->flags |= finst;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]953}
954
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]955/* This function returns the appropriate error location for the given stream
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]956 * and message.
957 */
958
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]959struct chunk *http_error_message(struct stream *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]960{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]961 if (s->be->errmsg[msgnum].str)
962 return &s->be->errmsg[msgnum];
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]963 else if (strm_fe(s)->errmsg[msgnum].str)
964 return &strm_fe(s)->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]965 else
966 return &http_err_chunks[msgnum];
967}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]968
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]969void
970http_reply_and_close(struct stream *s, short status, struct chunk *msg)
971{
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]972 s->txn->flags &= ~TX_WAIT_NEXT_RQ;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]973 FLT_STRM_CB(s, flt_http_reply(s, status, msg));
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]974 stream_int_retnclose(&s->si[0], msg);
975}
976
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]977/*
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]978 * returns a known method among HTTP_METH_* or HTTP_METH_OTHER for all unknown
979 * ones.
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]980 */
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]981enum http_meth_t find_http_meth(const char *str, const int len)
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]982{
983 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]984 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]985
986 m = ((unsigned)*str - 'A');
987
988 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]989 for (h = http_methods[m]; h->len > 0; h++) {
990 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]991 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]992 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]993 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]994 };
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]995 }
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]996 return HTTP_METH_OTHER;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]997}
998
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]999/* Parse the URI from the given transaction (which is assumed to be in request
1000 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
1001 * It is returned otherwise.
1002 */
Thierry FOURNIER3c331782015-09-17 19:33:35 +0200[diff] [blame]1003char *http_get_path(struct http_txn *txn)
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1004{
1005 char *ptr, *end;
1006
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1007 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1008 end = ptr + txn->req.sl.rq.u_l;
1009
1010 if (ptr >= end)
1011 return NULL;
1012
1013 /* RFC2616, par. 5.1.2 :
1014 * Request-URI = "*" | absuri | abspath | authority
1015 */
1016
1017 if (*ptr == '*')
1018 return NULL;
1019
1020 if (isalpha((unsigned char)*ptr)) {
1021 /* this is a scheme as described by RFC3986, par. 3.1 */
1022 ptr++;
1023 while (ptr < end &&
1024 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
1025 ptr++;
1026 /* skip '://' */
1027 if (ptr == end || *ptr++ != ':')
1028 return NULL;
1029 if (ptr == end || *ptr++ != '/')
1030 return NULL;
1031 if (ptr == end || *ptr++ != '/')
1032 return NULL;
1033 }
1034 /* skip [user[:passwd]@]host[:[port]] */
1035
1036 while (ptr < end && *ptr != '/')
1037 ptr++;
1038
1039 if (ptr == end)
1040 return NULL;
1041
1042 /* OK, we got the '/' ! */
1043 return ptr;
1044}
1045
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]1046/* Parse the URI from the given string and look for the "/" beginning the PATH.
1047 * If not found, return NULL. It is returned otherwise.
1048 */
1049static char *
1050http_get_path_from_string(char *str)
1051{
1052 char *ptr = str;
1053
1054 /* RFC2616, par. 5.1.2 :
1055 * Request-URI = "*" | absuri | abspath | authority
1056 */
1057
1058 if (*ptr == '*')
1059 return NULL;
1060
1061 if (isalpha((unsigned char)*ptr)) {
1062 /* this is a scheme as described by RFC3986, par. 3.1 */
1063 ptr++;
1064 while (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.')
1065 ptr++;
1066 /* skip '://' */
1067 if (*ptr == '\0' || *ptr++ != ':')
1068 return NULL;
1069 if (*ptr == '\0' || *ptr++ != '/')
1070 return NULL;
1071 if (*ptr == '\0' || *ptr++ != '/')
1072 return NULL;
1073 }
1074 /* skip [user[:passwd]@]host[:[port]] */
1075
1076 while (*ptr != '\0' && *ptr != ' ' && *ptr != '/')
1077 ptr++;
1078
1079 if (*ptr == '\0' || *ptr == ' ')
1080 return NULL;
1081
1082 /* OK, we got the '/' ! */
1083 return ptr;
1084}
1085
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]1086/* Returns a 302 for a redirectable request that reaches a server working in
1087 * in redirect mode. This may only be called just after the stream interface
1088 * has moved to SI_ST_ASS. Unprocessable requests are left unchanged and will
1089 * follow normal proxy processing. NOTE: this function is designed to support
1090 * being called once data are scheduled for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1091 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1092void http_perform_server_redirect(struct stream *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1093{
1094 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1095 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1096 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1097 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1098
1099 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1100 trash.len = strlen(HTTP_302);
1101 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1102
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]1103 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1104
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1105 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1106 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1107 return;
1108
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]1109 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1110 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1111 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
1112 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]1113 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1114
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1115 /* 3: add the request URI. Since it was already forwarded, we need
1116 * to temporarily rewind the buffer.
1117 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1118 txn = s->txn;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1119 b_rew(s->req.buf, rewind = http_hdr_rewind(&txn->req));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1120
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1121 path = http_get_path(txn);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1122 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]1123
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1124 b_adv(s->req.buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1125
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1126 if (!path)
1127 return;
1128
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1129 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1130 return;
1131
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1132 memcpy(trash.str + trash.len, path, len);
1133 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1134
1135 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1136 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
1137 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1138 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1139 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
1140 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1141 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1142
1143 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]1144 si_shutr(si);
1145 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1146 si->err_type = SI_ET_NONE;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1147 si->state = SI_ST_CLO;
1148
1149 /* send the message */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1150 http_server_error(s, si, SF_ERR_LOCAL, SF_FINST_C, 302, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1151
1152 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau4521ba62013-01-24 01:25:25 +0100[diff] [blame]1153 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500[diff] [blame]1154 srv_set_sess_last(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1155}
1156
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]1157/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1158 * that the server side is closed. Note that err_type is actually a
1159 * bitmask, where almost only aborts may be cumulated with other
1160 * values. We consider that aborted operations are more important
1161 * than timeouts or errors due to the fact that nobody else in the
1162 * logs might explain incomplete retries. All others should avoid
1163 * being cumulated. It should normally not be possible to have multiple
1164 * aborts at once, but just in case, the first one in sequence is reported.
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1165 * Note that connection errors appearing on the second request of a keep-alive
1166 * connection are not reported since this allows the client to retry.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1167 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1168void http_return_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1169{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]1170 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1171
1172 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1173 http_server_error(s, si, SF_ERR_CLICL, SF_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1174 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1175 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1176 http_server_error(s, si, SF_ERR_CLICL, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1177 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1178 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1179 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1180 http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1181 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1182 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1183 http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1184 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1185 else if (err_type & SI_ET_CONN_TO)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1186 http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1187 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1188 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1189 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1190 http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_C,
1191 503, (s->flags & SF_SRV_REUSED) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1192 http_error_message(s, HTTP_ERR_503));
Willy Tarreau2d400bb2012-05-14 12:11:47 +0200[diff] [blame]1193 else if (err_type & SI_ET_CONN_RES)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1194 http_server_error(s, si, SF_ERR_RESOURCE, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1195 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1196 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1197 else /* SI_ET_CONN_OTHER and others */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1198 http_server_error(s, si, SF_ERR_INTERNAL, SF_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1199 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1200}
1201
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1202extern const char sess_term_cond[8];
1203extern const char sess_fin_state[8];
1204extern const char *monthname[12];
Willy Tarreau63986c72015-04-03 22:55:33 +0200[diff] [blame]1205struct pool_head *pool2_http_txn;
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]1206struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]1207struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]1208struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1209
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1210/*
1211 * Capture headers from message starting at <som> according to header list
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1212 * <cap_hdr>, and fill the <cap> pointers appropriately.
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1213 */
1214void capture_headers(char *som, struct hdr_idx *idx,
1215 char **cap, struct cap_hdr *cap_hdr)
1216{
1217 char *eol, *sol, *col, *sov;
1218 int cur_idx;
1219 struct cap_hdr *h;
1220 int len;
1221
1222 sol = som + hdr_idx_first_pos(idx);
1223 cur_idx = hdr_idx_first_idx(idx);
1224
1225 while (cur_idx) {
1226 eol = sol + idx->v[cur_idx].len;
1227
1228 col = sol;
1229 while (col < eol && *col != ':')
1230 col++;
1231
1232 sov = col + 1;
1233 while (sov < eol && http_is_lws[(unsigned char)*sov])
1234 sov++;
1235
1236 for (h = cap_hdr; h; h = h->next) {
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1237 if (h->namelen && (h->namelen == col - sol) &&
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1238 (strncasecmp(sol, h->name, h->namelen) == 0)) {
1239 if (cap[h->index] == NULL)
1240 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]1241 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1242
1243 if (cap[h->index] == NULL) {
1244 Alert("HTTP capture : out of memory.\n");
1245 continue;
1246 }
1247
1248 len = eol - sov;
1249 if (len > h->len)
1250 len = h->len;
1251
1252 memcpy(cap[h->index], sov, len);
1253 cap[h->index][len]=0;
1254 }
1255 }
1256 sol = eol + idx->v[cur_idx].cr + 1;
1257 cur_idx = idx->v[cur_idx].next;
1258 }
1259}
1260
1261
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1262/* either we find an LF at <ptr> or we jump to <bad>.
1263 */
1264#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
1265
1266/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
1267 * otherwise to <http_msg_ood> with <state> set to <st>.
1268 */
1269#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
1270 ptr++; \
1271 if (likely(ptr < end)) \
1272 goto good; \
1273 else { \
1274 state = (st); \
1275 goto http_msg_ood; \
1276 } \
1277 } while (0)
1278
1279
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1280/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1281 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1282 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
1283 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
1284 * will give undefined results.
1285 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1286 * and that msg->sol points to the beginning of the response.
1287 * If a complete line is found (which implies that at least one CR or LF is
1288 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1289 * returned indicating an incomplete line (which does not mean that parts have
1290 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1291 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1292 * upon next call.
1293 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1294 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1295 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1296 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1297 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1298 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1299const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1300 enum ht_state state, const char *ptr, const char *end,
1301 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1302{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1303 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1304
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1305 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1306 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1307 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1308 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1309 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
1310
1311 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1312 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1313 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1314 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1315 state = HTTP_MSG_ERROR;
1316 break;
1317
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1318 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1319 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1320 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1321 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1322 goto http_msg_rpcode;
1323 }
1324 if (likely(HTTP_IS_SPHT(*ptr)))
1325 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1326 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1327 state = HTTP_MSG_ERROR;
1328 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1329
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1330 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1331 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1332 if (likely(!HTTP_IS_LWS(*ptr)))
1333 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
1334
1335 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1336 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1337 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1338 }
1339
1340 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1341 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1342 http_msg_rsp_reason:
1343 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1344 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1345 msg->sl.st.r_l = 0;
1346 goto http_msg_rpline_eol;
1347
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1348 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1349 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1350 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1351 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1352 goto http_msg_rpreason;
1353 }
1354 if (likely(HTTP_IS_SPHT(*ptr)))
1355 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1356 /* so it's a CR/LF, so there is no reason phrase */
1357 goto http_msg_rsp_reason;
1358
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1359 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1360 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1361 if (likely(!HTTP_IS_CRLF(*ptr)))
1362 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1363 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1364 http_msg_rpline_eol:
1365 /* We have seen the end of line. Note that we do not
1366 * necessarily have the \n yet, but at least we know that we
1367 * have EITHER \r OR \n, otherwise the response would not be
1368 * complete. We can then record the response length and return
1369 * to the caller which will be able to register it.
1370 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1371 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1372 return ptr;
1373
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1374 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1375#ifdef DEBUG_FULL
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1376 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1377 exit(1);
1378#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1379 ;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1380 }
1381
1382 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1383 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1384 if (ret_state)
1385 *ret_state = state;
1386 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1387 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1388 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1389}
1390
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1391/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1392 * This function parses a request line between <ptr> and <end>, starting with
1393 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1394 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1395 * will give undefined results.
1396 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1397 * and that msg->sol points to the beginning of the request.
1398 * If a complete line is found (which implies that at least one CR or LF is
1399 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1400 * returned indicating an incomplete line (which does not mean that parts have
1401 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1402 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1403 * upon next call.
1404 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1405 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1406 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1407 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1408 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1409 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1410const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1411 enum ht_state state, const char *ptr, const char *end,
1412 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1413{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1414 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1415
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1416 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1417 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1418 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1419 if (likely(HTTP_IS_TOKEN(*ptr)))
1420 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1421
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1422 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1423 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1424 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1425 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1426
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1427 if (likely(HTTP_IS_CRLF(*ptr))) {
1428 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1429 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1430 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1431 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1432 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1433 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1434 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1435 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1436 msg->sl.rq.v_l = 0;
1437 goto http_msg_rqline_eol;
1438 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1439 state = HTTP_MSG_ERROR;
1440 break;
1441
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1442 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1443 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1444 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1445 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1446 goto http_msg_rquri;
1447 }
1448 if (likely(HTTP_IS_SPHT(*ptr)))
1449 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1450 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1451 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1452
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1453 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1454 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1455 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1456 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1457
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1458 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1459 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1460 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1461 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1462
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1463 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1464 /* non-ASCII chars are forbidden unless option
1465 * accept-invalid-http-request is enabled in the frontend.
1466 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1467 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1468 if (msg->err_pos < -1)
1469 goto invalid_char;
1470 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1471 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1472 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1473 }
1474
1475 if (likely(HTTP_IS_CRLF(*ptr))) {
1476 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1477 goto http_msg_req09_uri_e;
1478 }
1479
1480 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1481 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1482 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1483 state = HTTP_MSG_ERROR;
1484 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1485
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1486 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1487 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1488 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1489 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1490 goto http_msg_rqver;
1491 }
1492 if (likely(HTTP_IS_SPHT(*ptr)))
1493 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1494 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1495 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1496
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1497 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1498 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1499 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1500 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1501
1502 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1503 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1504 http_msg_rqline_eol:
1505 /* We have seen the end of line. Note that we do not
1506 * necessarily have the \n yet, but at least we know that we
1507 * have EITHER \r OR \n, otherwise the request would not be
1508 * complete. We can then record the request length and return
1509 * to the caller which will be able to register it.
1510 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1511 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1512 return ptr;
1513 }
1514
1515 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1516 state = HTTP_MSG_ERROR;
1517 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1518
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1519 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1520#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1521 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1522 exit(1);
1523#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1524 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1525 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1526
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1527 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1528 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1529 if (ret_state)
1530 *ret_state = state;
1531 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1532 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1533 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1534}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1535
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1536/*
1537 * Returns the data from Authorization header. Function may be called more
1538 * than once so data is stored in txn->auth_data. When no header is found
1539 * 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]1540 * searching again for something we are unable to find anyway. However, if
1541 * the result if valid, the cache is not reused because we would risk to
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1542 * have the credentials overwritten by another stream in parallel.
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1543 */
1544
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]1545/* This bufffer is initialized in the file 'src/haproxy.c'. This length is
1546 * set according to global.tune.bufsize.
1547 */
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1548char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1549
1550int
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1551get_http_auth(struct stream *s)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1552{
1553
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1554 struct http_txn *txn = s->txn;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1555 struct chunk auth_method;
1556 struct hdr_ctx ctx;
1557 char *h, *p;
1558 int len;
1559
1560#ifdef DEBUG_AUTH
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1561 printf("Auth for stream %p: %d\n", s, txn->auth.method);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1562#endif
1563
1564 if (txn->auth.method == HTTP_AUTH_WRONG)
1565 return 0;
1566
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1567 txn->auth.method = HTTP_AUTH_WRONG;
1568
1569 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1570
1571 if (txn->flags & TX_USE_PX_CONN) {
1572 h = "Proxy-Authorization";
1573 len = strlen(h);
1574 } else {
1575 h = "Authorization";
1576 len = strlen(h);
1577 }
1578
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1579 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]1580 return 0;
1581
1582 h = ctx.line + ctx.val;
1583
1584 p = memchr(h, ' ', ctx.vlen);
1585 if (!p || p == h)
1586 return 0;
1587
1588 chunk_initlen(&auth_method, h, 0, p-h);
1589 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1590
1591 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1592
1593 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1594 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1595
1596 if (len < 0)
1597 return 0;
1598
1599
1600 get_http_auth_buff[len] = '\0';
1601
1602 p = strchr(get_http_auth_buff, ':');
1603
1604 if (!p)
1605 return 0;
1606
1607 txn->auth.user = get_http_auth_buff;
1608 *p = '\0';
1609 txn->auth.pass = p+1;
1610
1611 txn->auth.method = HTTP_AUTH_BASIC;
1612 return 1;
1613 }
1614
1615 return 0;
1616}
1617
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1618
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1619/*
1620 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1621 * depending on the initial msg->msg_state. The caller is responsible for
1622 * ensuring that the message does not wrap. The function can be preempted
1623 * everywhere when data are missing and recalled at the exact same location
1624 * with no information loss. The message may even be realigned between two
1625 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1626 * 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]1627 * fields. Note that msg->sol will be initialized after completing the first
1628 * state, so that none of the msg pointers has to be initialized prior to the
1629 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1630 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1631void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1632{
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1633 enum ht_state state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1634 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1635 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1636
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1637 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1638 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1639 ptr = buf->p + msg->next;
1640 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1641
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1642 if (unlikely(ptr >= end))
1643 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1644
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1645 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1646 /*
1647 * First, states that are specific to the response only.
1648 * We check them first so that request and headers are
1649 * closer to each other (accessed more often).
1650 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1651 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1652 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1653 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1654 /* we have a start of message, but we have to check
1655 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1656 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1657 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1658 if (unlikely(ptr != buf->p)) {
1659 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1660 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1661 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1662 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1663 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1664 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1665 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1666 hdr_idx_init(idx);
1667 state = HTTP_MSG_RPVER;
1668 goto http_msg_rpver;
1669 }
1670
1671 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1672 goto http_msg_invalid;
1673
1674 if (unlikely(*ptr == '\n'))
1675 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1676 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1677 /* stop here */
1678
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1679 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1680 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1681 EXPECT_LF_HERE(ptr, http_msg_invalid);
1682 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1683 /* stop here */
1684
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1685 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1686 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1687 case HTTP_MSG_RPVER_SP:
1688 case HTTP_MSG_RPCODE:
1689 case HTTP_MSG_RPCODE_SP:
1690 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1691 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1692 state, ptr, end,
1693 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1694 if (unlikely(!ptr))
1695 return;
1696
1697 /* we have a full response and we know that we have either a CR
1698 * or an LF at <ptr>.
1699 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1700 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1701
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1702 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1703 if (likely(*ptr == '\r'))
1704 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1705 goto http_msg_rpline_end;
1706
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1707 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1708 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1709 /* msg->sol must point to the first of CR or LF. */
1710 EXPECT_LF_HERE(ptr, http_msg_invalid);
1711 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1712 /* stop here */
1713
1714 /*
1715 * Second, states that are specific to the request only
1716 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1717 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1718 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1719 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1720 /* we have a start of message, but we have to check
1721 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1722 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1723 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1724 if (likely(ptr != buf->p)) {
1725 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1726 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1727 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1728 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1729 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1730 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1731 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1732 state = HTTP_MSG_RQMETH;
1733 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1734 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1735
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1736 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1737 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1738
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1739 if (unlikely(*ptr == '\n'))
1740 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1741 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1742 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1743
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1744 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1745 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1746 EXPECT_LF_HERE(ptr, http_msg_invalid);
1747 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1748 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1749
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1750 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1751 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1752 case HTTP_MSG_RQMETH_SP:
1753 case HTTP_MSG_RQURI:
1754 case HTTP_MSG_RQURI_SP:
1755 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1756 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1757 state, ptr, end,
1758 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1759 if (unlikely(!ptr))
1760 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1761
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1762 /* we have a full request and we know that we have either a CR
1763 * or an LF at <ptr>.
1764 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1765 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1766
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1767 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1768 if (likely(*ptr == '\r'))
1769 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1770 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1771
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1772 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1773 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1774 /* check for HTTP/0.9 request : no version information available.
1775 * msg->sol must point to the first of CR or LF.
1776 */
1777 if (unlikely(msg->sl.rq.v_l == 0))
1778 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1779
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1780 EXPECT_LF_HERE(ptr, http_msg_invalid);
1781 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1782 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1783
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1784 /*
1785 * Common states below
1786 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1787 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1788 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1789 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1790 if (likely(!HTTP_IS_CRLF(*ptr))) {
1791 goto http_msg_hdr_name;
1792 }
1793
1794 if (likely(*ptr == '\r'))
1795 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1796 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1797
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1798 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1799 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1800 /* assumes msg->sol points to the first char */
1801 if (likely(HTTP_IS_TOKEN(*ptr)))
1802 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1803
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1804 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1805 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]1806
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1807 if (likely(msg->err_pos < -1) || *ptr == '\n')
1808 goto http_msg_invalid;
1809
1810 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1811 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1812
1813 /* and we still accept this non-token character */
1814 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1815
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1816 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1817 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1818 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1819 if (likely(HTTP_IS_SPHT(*ptr)))
1820 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]1821
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1822 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1823 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1824
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1825 if (likely(!HTTP_IS_CRLF(*ptr))) {
1826 goto http_msg_hdr_val;
1827 }
1828
1829 if (likely(*ptr == '\r'))
1830 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1831 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1832
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1833 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1834 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1835 EXPECT_LF_HERE(ptr, http_msg_invalid);
1836 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]1837
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1838 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1839 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1840 if (likely(HTTP_IS_SPHT(*ptr))) {
1841 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1842 for (; buf->p + msg->sov < ptr; msg->sov++)
1843 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1844 goto http_msg_hdr_l1_sp;
1845 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1846 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1847 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1848 goto http_msg_complete_header;
1849
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1850 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1851 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1852 /* assumes msg->sol points to the first char, and msg->sov
1853 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1854 */
1855 if (likely(!HTTP_IS_CRLF(*ptr)))
1856 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1857
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1858 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1859 /* Note: we could also copy eol into ->eoh so that we have the
1860 * real header end in case it ends with lots of LWS, but is this
1861 * really needed ?
1862 */
1863 if (likely(*ptr == '\r'))
1864 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1865 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1866
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1867 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1868 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1869 EXPECT_LF_HERE(ptr, http_msg_invalid);
1870 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]1871
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1872 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1873 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1874 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1875 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1876 for (; buf->p + msg->eol < ptr; msg->eol++)
1877 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1878 goto http_msg_hdr_val;
1879 }
1880 http_msg_complete_header:
1881 /*
1882 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1883 * Assumes msg->sol points to the first char, msg->sov points
1884 * to the first character of the value and msg->eol to the
1885 * first CR or LF so we know how the line ends. We insert last
1886 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1887 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1888 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1889 idx, idx->tail) < 0))
1890 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1891
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1892 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1893 if (likely(!HTTP_IS_CRLF(*ptr))) {
1894 goto http_msg_hdr_name;
1895 }
1896
1897 if (likely(*ptr == '\r'))
1898 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1899 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1900
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1901 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1902 http_msg_last_lf:
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]1903 /* Assumes msg->sol points to the first of either CR or LF.
1904 * Sets ->sov and ->next to the total header length, ->eoh to
1905 * the last CRLF, and ->eol to the last CRLF length (1 or 2).
1906 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1907 EXPECT_LF_HERE(ptr, http_msg_invalid);
1908 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1909 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1910 msg->eoh = msg->sol;
1911 msg->sol = 0;
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]1912 msg->eol = msg->sov - msg->eoh;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1913 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1914 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1915
1916 case HTTP_MSG_ERROR:
1917 /* this may only happen if we call http_msg_analyser() twice with an error */
1918 break;
1919
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1920 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1921#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1922 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1923 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1924#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1925 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1926 }
1927 http_msg_ood:
1928 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1929 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1930 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1931 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1932
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1933 http_msg_invalid:
1934 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1935 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1936 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1937 return;
1938}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1939
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1940/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1941 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1942 * nothing is done and 1 is returned.
1943 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1944static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1945{
1946 int delta;
1947 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1948 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1949
1950 if (msg->sl.rq.v_l != 0)
1951 return 1;
1952
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]1953 /* RFC 1945 allows only GET for HTTP/0.9 requests */
1954 if (txn->meth != HTTP_METH_GET)
1955 return 0;
1956
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1957 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1958 delta = 0;
1959
1960 if (msg->sl.rq.u_l == 0) {
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]1961 /* HTTP/0.9 requests *must* have a request URI, per RFC 1945 */
1962 return 0;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1963 }
1964 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1965 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]1966 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1967 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1968 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1969 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1970 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1971 NULL, NULL);
1972 if (unlikely(!cur_end))
1973 return 0;
1974
1975 /* we have a full HTTP/1.0 request now and we know that
1976 * we have either a CR or an LF at <ptr>.
1977 */
1978 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1979 return 1;
1980}
1981
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1982/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1983 * and "keep-alive" values. If we already know that some headers may safely
1984 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1985 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1986 * - 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]1987 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1988 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1989 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1990 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1991 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1992 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1993void 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]1994{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1995 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1996 const char *hdr_val = "Connection";
1997 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1998
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1999 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2000 return;
2001
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2002 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2003 hdr_val = "Proxy-Connection";
2004 hdr_len = 16;
2005 }
2006
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2007 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2008 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2009 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]2010 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
2011 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2012 if (to_del & 2)
2013 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2014 else
2015 txn->flags |= TX_CON_KAL_SET;
2016 }
2017 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
2018 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2019 if (to_del & 1)
2020 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2021 else
2022 txn->flags |= TX_CON_CLO_SET;
2023 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2024 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
2025 txn->flags |= TX_HDR_CONN_UPG;
2026 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2027 }
2028
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2029 txn->flags |= TX_HDR_CONN_PRS;
2030 return;
2031}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2032
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2033/* Apply desired changes on the Connection: header. Values may be removed and/or
2034 * added depending on the <wanted> flags, which are exclusively composed of
2035 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
2036 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
2037 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2038void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2039{
2040 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2041 const char *hdr_val = "Connection";
2042 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2043
2044 ctx.idx = 0;
2045
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2046
2047 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2048 hdr_val = "Proxy-Connection";
2049 hdr_len = 16;
2050 }
2051
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2052 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2053 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]2054 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
2055 if (wanted & TX_CON_KAL_SET)
2056 txn->flags |= TX_CON_KAL_SET;
2057 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2058 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2059 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2060 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
2061 if (wanted & TX_CON_CLO_SET)
2062 txn->flags |= TX_CON_CLO_SET;
2063 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2064 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2065 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2066 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2067
2068 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
2069 return;
2070
2071 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
2072 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2073 hdr_val = "Connection: close";
2074 hdr_len = 17;
2075 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2076 hdr_val = "Proxy-Connection: close";
2077 hdr_len = 23;
2078 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2079 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2080 }
2081
2082 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
2083 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2084 hdr_val = "Connection: keep-alive";
2085 hdr_len = 22;
2086 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2087 hdr_val = "Proxy-Connection: keep-alive";
2088 hdr_len = 28;
2089 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2090 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2091 }
2092 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2093}
2094
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2095/* Parse the chunk size at msg->next. Once done, it adjusts ->next to point to
2096 * the first byte of data after the chunk size, so that we know we can forward
2097 * exactly msg->next bytes. msg->sol contains the exact number of bytes forming
2098 * the chunk size. That way it is always possible to differentiate between the
2099 * start of the body and the start of the data.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2100 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2101 * Note: this function is designed to parse wrapped CRLF at the end of the buffer.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2102 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2103static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2104{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2105 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2106 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2107 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2108 const char *end = buf->data + buf->size;
2109 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2110 unsigned int chunk = 0;
2111
2112 /* The chunk size is in the following form, though we are only
2113 * interested in the size and CRLF :
2114 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
2115 */
2116 while (1) {
2117 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2118 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2119 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2120 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2121 if (c < 0) /* not a hex digit anymore */
2122 break;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2123 if (unlikely(++ptr >= end))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2124 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]2125 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2126 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2127 chunk = (chunk << 4) + c;
2128 }
2129
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2130 /* empty size not allowed */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2131 if (unlikely(ptr == ptr_old))
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2132 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2133
2134 while (http_is_spht[(unsigned char)*ptr]) {
2135 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2136 ptr = buf->data;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2137 if (unlikely(ptr == stop))
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2138 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2139 }
2140
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2141 /* Up to there, we know that at least one byte is present at *ptr. Check
2142 * for the end of chunk size.
2143 */
2144 while (1) {
2145 if (likely(HTTP_IS_CRLF(*ptr))) {
2146 /* we now have a CR or an LF at ptr */
2147 if (likely(*ptr == '\r')) {
2148 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2149 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2150 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2151 return 0;
2152 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2153
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2154 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2155 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2156 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2157 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2158 /* done */
2159 break;
2160 }
2161 else if (*ptr == ';') {
2162 /* chunk extension, ends at next CRLF */
2163 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2164 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2165 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2166 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2167
2168 while (!HTTP_IS_CRLF(*ptr)) {
2169 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2170 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2171 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2172 return 0;
2173 }
2174 /* we have a CRLF now, loop above */
2175 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2176 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2177 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2178 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2179 }
2180
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2181 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2182 * which may or may not be present. We save that into ->next,
2183 * and the number of bytes parsed into msg->sol.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2184 */
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2185 msg->sol = ptr - ptr_old;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2186 if (unlikely(ptr < ptr_old))
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2187 msg->sol += buf->size;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2188 msg->chunk_len = chunk;
2189 msg->body_len += chunk;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2190 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2191 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2192 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2193 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2194}
2195
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2196/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2197 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2198 * the trailers is found, it is automatically scheduled to be forwarded,
2199 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
2200 * If not enough data are available, the function does not change anything
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2201 * except maybe msg->next if it could parse some lines, and returns zero.
2202 * If a parse error is encountered, the function returns < 0 and does not
2203 * change anything except maybe msg->next. Note that the message must
2204 * already be in HTTP_MSG_TRAILERS state before calling this function,
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2205 * which implies that all non-trailers data have already been scheduled for
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2206 * forwarding, and that msg->next exactly matches the length of trailers
2207 * already parsed and not forwarded. It is also important to note that this
2208 * function is designed to be able to parse wrapped headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2209 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2210static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2211{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2212 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2213
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2214 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2215 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2216 const char *p1 = NULL, *p2 = NULL;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame^]2217 const char *start = b_ptr(buf, msg->next + msg->sol);
2218 const char *stop = bi_end(buf);
2219 const char *ptr = start;
2220 int bytes = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2221
2222 /* scan current line and stop at LF or CRLF */
2223 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2224 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2225 return 0;
2226
2227 if (*ptr == '\n') {
2228 if (!p1)
2229 p1 = ptr;
2230 p2 = ptr;
2231 break;
2232 }
2233
2234 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2235 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2236 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2237 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2238 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2239 p1 = ptr;
2240 }
2241
2242 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2243 if (ptr >= buf->data + buf->size)
2244 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2245 }
2246
2247 /* after LF; point to beginning of next line */
2248 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2249 if (p2 >= buf->data + buf->size)
2250 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2251
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame^]2252 bytes = p2 - start;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2253 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2254 bytes += buf->size;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame^]2255 msg->sol += bytes;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2256
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2257 /* LF/CRLF at beginning of line => end of trailers at p2.
2258 * Everything was scheduled for forwarding, there's nothing left
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame^]2259 * from this message. */
2260 if (p1 == start)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2261 return 1;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame^]2262
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2263 /* OK, next line then */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2264 }
2265}
2266
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2267/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF
2268 * or a possible LF alone at the end of a chunk. It automatically adjusts
2269 * msg->next in order to include this part into the next forwarding phase.
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2270 * Note that the caller must ensure that ->p points to the first byte to parse.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2271 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
2272 * not enough data are available, the function does not change anything and
2273 * returns zero. If a parse error is encountered, the function returns < 0 and
2274 * does not change anything. Note: this function is designed to parse wrapped
2275 * CRLF at the end of the buffer.
2276 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2277static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2278{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2279 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2280 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2281 int bytes;
2282
2283 /* NB: we'll check data availabilty at the end. It's not a
2284 * problem because whatever we match first will be checked
2285 * against the correct length.
2286 */
2287 bytes = 1;
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2288 ptr = b_ptr(buf, msg->next);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2289 if (*ptr == '\r') {
2290 bytes++;
2291 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2292 if (ptr >= buf->data + buf->size)
2293 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2294 }
2295
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2296 if (msg->next + bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2297 return 0;
2298
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2299 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2300 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2301 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2302 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2303 msg->sol = bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2304 return 1;
2305}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2306
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2307/* Parses a qvalue and returns it multipled by 1000, from 0 to 1000. If the
2308 * value is larger than 1000, it is bound to 1000. The parser consumes up to
2309 * 1 digit, one dot and 3 digits and stops on the first invalid character.
2310 * Unparsable qvalues return 1000 as "q=1.000".
2311 */
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2312int parse_qvalue(const char *qvalue, const char **end)
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2313{
2314 int q = 1000;
2315
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2316 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2317 goto out;
2318 q = (*qvalue++ - '0') * 1000;
2319
2320 if (*qvalue++ != '.')
2321 goto out;
2322
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2323 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2324 goto out;
2325 q += (*qvalue++ - '0') * 100;
2326
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2327 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2328 goto out;
2329 q += (*qvalue++ - '0') * 10;
2330
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2331 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2332 goto out;
2333 q += (*qvalue++ - '0') * 1;
2334 out:
2335 if (q > 1000)
2336 q = 1000;
Willy Tarreau38b3aa52014-04-22 23:32:05 +0200[diff] [blame]2337 if (end)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2338 *end = qvalue;
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2339 return q;
2340}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2341
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2342void 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]2343{
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]2344 struct proxy *fe = strm_fe(s);
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2345 int tmp = TX_CON_WANT_KAL;
2346
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2347 if (!((fe->options2|s->be->options2) & PR_O2_FAKE_KA)) {
2348 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2349 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN)
2350 tmp = TX_CON_WANT_TUN;
2351
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2352 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2353 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2354 tmp = TX_CON_WANT_TUN;
2355 }
2356
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2357 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2358 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL) {
2359 /* option httpclose + server_close => forceclose */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2360 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2361 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2362 tmp = TX_CON_WANT_CLO;
2363 else
2364 tmp = TX_CON_WANT_SCL;
2365 }
2366
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2367 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2368 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL)
2369 tmp = TX_CON_WANT_CLO;
2370
2371 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
2372 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
2373
2374 if (!(txn->flags & TX_HDR_CONN_PRS) &&
2375 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) {
2376 /* parse the Connection header and possibly clean it */
2377 int to_del = 0;
2378 if ((msg->flags & HTTP_MSGF_VER_11) ||
2379 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2380 !((fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2381 to_del |= 2; /* remove "keep-alive" */
2382 if (!(msg->flags & HTTP_MSGF_VER_11))
2383 to_del |= 1; /* remove "close" */
2384 http_parse_connection_header(txn, msg, to_del);
2385 }
2386
2387 /* check if client or config asks for explicit close in KAL/SCL */
2388 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
2389 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
2390 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
2391 (!(msg->flags & HTTP_MSGF_VER_11) && !(txn->flags & TX_HDR_CONN_KAL)) || /* no "connection: k-a" in 1.0 */
2392 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2393 fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2394 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
2395}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2396
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2397/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2398 * processing can continue on next analysers, or zero if it either needs more
2399 * data or wants to immediately abort the request (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2400 * 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]2401 * when it has nothing left to do, and may remove any analyser when it wants to
2402 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2403 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2404int http_wait_for_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2405{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2406 /*
2407 * We will parse the partial (or complete) lines.
2408 * We will check the request syntax, and also join multi-line
2409 * headers. An index of all the lines will be elaborated while
2410 * parsing.
2411 *
2412 * For the parsing, we use a 28 states FSM.
2413 *
2414 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2415 * req->buf->p = beginning of request
2416 * req->buf->p + msg->eoh = end of processed headers / start of current one
2417 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2418 * msg->eol = end of current header or line (LF or CRLF)
2419 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2420 *
2421 * 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]2422 * we will set a few fields (txn->meth, sn->flags/SF_REDIRECTABLE).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2423 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2424 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2425 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2426
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2427 int cur_idx;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2428 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]2429 struct http_txn *txn = s->txn;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2430 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2431 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2432
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2433 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]2434 now_ms, __FUNCTION__,
2435 s,
2436 req,
2437 req->rex, req->wex,
2438 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2439 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2440 req->analysers);
2441
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2442 /* we're speaking HTTP here, so let's speak HTTP to the client */
2443 s->srv_error = http_return_srv_error;
2444
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2445 /* There's a protected area at the end of the buffer for rewriting
2446 * purposes. We don't want to start to parse the request if the
2447 * protected area is affected, because we may have to move processed
2448 * data later, which is much more complicated.
2449 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2450 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2451 if (txn->flags & TX_NOT_FIRST) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]2452 if (unlikely(!channel_is_rewritable(req))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2453 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2454 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2455 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2456 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2457 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]2458 req->flags |= CF_WAKE_WRITE;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2459 return 0;
2460 }
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2461 if (unlikely(bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2462 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite))
2463 buffer_slow_realign(req->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2464 }
2465
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2466 /* Note that we have the same problem with the response ; we
2467 * may want to send a redirect, error or anything which requires
2468 * some spare space. So we'll ensure that we have at least
2469 * maxrewrite bytes available in the response buffer before
2470 * processing that one. This will only affect pipelined
2471 * keep-alive requests.
2472 */
2473 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2474 unlikely(!channel_is_rewritable(&s->res) ||
2475 bi_end(s->res.buf) < b_ptr(s->res.buf, txn->rsp.next) ||
2476 bi_end(s->res.buf) > s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)) {
2477 if (s->res.buf->o) {
2478 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]2479 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2480 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2481 channel_dont_connect(req);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2482 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
2483 s->res.flags |= CF_WAKE_WRITE;
2484 s->res.analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2485 return 0;
2486 }
2487 }
2488
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2489 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2490 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2491 }
2492
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2493 /* 1: we might have to print this header in debug mode */
2494 if (unlikely((global.mode & MODE_DEBUG) &&
2495 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]2496 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2497 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2498
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2499 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2500 /* this is a bit complex : in case of error on the request line,
2501 * we know that rq.l is still zero, so we display only the part
2502 * up to the end of the line (truncated by debug_hdr).
2503 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2504 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2505 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2506
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2507 sol += hdr_idx_first_pos(&txn->hdr_idx);
2508 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2509
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2510 while (cur_idx) {
2511 eol = sol + txn->hdr_idx.v[cur_idx].len;
2512 debug_hdr("clihdr", s, sol, eol);
2513 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2514 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2515 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2516 }
2517
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2518
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2519 /*
2520 * Now we quickly check if we have found a full valid request.
2521 * If not so, we check the FD and buffer states before leaving.
2522 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2523 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2524 * requests are checked first. When waiting for a second request
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2525 * on a keep-alive stream, if we encounter and error, close, t/o,
2526 * we note the error in the stream flags but don't set any state.
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2527 * Since the error will be noted there, it will not be counted by
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2528 * process_stream() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2529 * Last, we may increase some tracked counters' http request errors on
2530 * the cases that are deliberately the client's fault. For instance,
2531 * a timeout or connection reset is not counted as an error. However
2532 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2533 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2534
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2535 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2536 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2537 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2538 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2539 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2540 stream_inc_http_req_ctr(s);
2541 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2542 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2543 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2544 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2545
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2546 /* 1: Since we are in header mode, if there's no space
2547 * left for headers, we won't be able to free more
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2548 * later, so the stream will never terminate. We
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2549 * must terminate it now.
2550 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2551 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2552 /* FIXME: check if URI is set and return Status
2553 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2554 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2555 stream_inc_http_req_ctr(s);
2556 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2557 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2558 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2559 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2560 goto return_bad_req;
2561 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2562
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2563 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2564 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2565 if (!(s->flags & SF_ERR_MASK))
2566 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2567
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2568 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2569 goto failed_keep_alive;
2570
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2571 if (sess->fe->options & PR_O_IGNORE_PRB)
2572 goto failed_keep_alive;
2573
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2574 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2575 if (msg->err_pos >= 0) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2576 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2577 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2578 }
2579
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2580 txn->status = 400;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2581 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2582 http_reply_and_close(s, txn->status, NULL);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2583 req->analysers &= AN_FLT_END;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2584 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2585 proxy_inc_fe_req_ctr(sess->fe);
2586 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2587 if (sess->listener->counters)
2588 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2589
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2590 if (!(s->flags & SF_FINST_MASK))
2591 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2592 return 0;
2593 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2594
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2595 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2596 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]2597 if (!(s->flags & SF_ERR_MASK))
2598 s->flags |= SF_ERR_CLITO;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2599
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2600 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2601 goto failed_keep_alive;
2602
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2603 if (sess->fe->options & PR_O_IGNORE_PRB)
2604 goto failed_keep_alive;
2605
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2606 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2607 if (msg->err_pos >= 0) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2608 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2609 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2610 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2611 txn->status = 408;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2612 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2613 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_408));
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2614 req->analysers &= AN_FLT_END;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2615
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2616 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2617 proxy_inc_fe_req_ctr(sess->fe);
2618 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2619 if (sess->listener->counters)
2620 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2621
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2622 if (!(s->flags & SF_FINST_MASK))
2623 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2624 return 0;
2625 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2626
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2627 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2628 else if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2629 if (!(s->flags & SF_ERR_MASK))
2630 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2631
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2632 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2633 goto failed_keep_alive;
2634
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2635 if (sess->fe->options & PR_O_IGNORE_PRB)
2636 goto failed_keep_alive;
2637
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2638 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2639 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2640 txn->status = 400;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2641 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2642 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2643 req->analysers &= AN_FLT_END;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2644 stream_inc_http_err_ctr(s);
2645 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2646 proxy_inc_fe_req_ctr(sess->fe);
2647 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2648 if (sess->listener->counters)
2649 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2650
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2651 if (!(s->flags & SF_FINST_MASK))
2652 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2653 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2654 }
2655
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2656 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2657 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2658 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2659#ifdef TCP_QUICKACK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2660 if (sess->listener->options & LI_O_NOQUICKACK && req->buf->i &&
2661 objt_conn(sess->origin) && conn_ctrl_ready(__objt_conn(sess->origin))) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2662 /* We need more data, we have to re-enable quick-ack in case we
2663 * previously disabled it, otherwise we might cause the client
2664 * to delay next data.
2665 */
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2666 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]2667 }
2668#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2669
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2670 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2671 /* If the client starts to talk, let's fall back to
2672 * request timeout processing.
2673 */
2674 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2675 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2676 }
2677
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2678 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2679 if (!tick_isset(req->analyse_exp)) {
2680 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2681 (txn->flags & TX_WAIT_NEXT_RQ) &&
2682 tick_isset(s->be->timeout.httpka))
2683 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2684 else
2685 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2686 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2687
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2688 /* we're not ready yet */
2689 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2690
2691 failed_keep_alive:
2692 /* Here we process low-level errors for keep-alive requests. In
2693 * short, if the request is not the first one and it experiences
2694 * a timeout, read error or shutdown, we just silently close so
2695 * that the client can try again.
2696 */
2697 txn->status = 0;
2698 msg->msg_state = HTTP_MSG_RQBEFORE;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2699 req->analysers &= AN_FLT_END;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2700 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]2701 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2702 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2703 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2704 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2705 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2706
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2707 /* OK now we have a complete HTTP request with indexed headers. Let's
2708 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2709 * 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]2710 * 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]2711 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2712 * byte after the last LF. msg->sov points to the first byte of data.
2713 * msg->eol cannot be trusted because it may have been left uninitialized
2714 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2715 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2716
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2717 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2718 proxy_inc_fe_req_ctr(sess->fe); /* one more valid request for this FE */
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2719
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2720 if (txn->flags & TX_WAIT_NEXT_RQ) {
2721 /* kill the pending keep-alive timeout */
2722 txn->flags &= ~TX_WAIT_NEXT_RQ;
2723 req->analyse_exp = TICK_ETERNITY;
2724 }
2725
2726
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2727 /* Maybe we found in invalid header name while we were configured not
2728 * to block on that, so we have to capture it now.
2729 */
2730 if (unlikely(msg->err_pos >= 0))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2731 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2732
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2733 /*
2734 * 1: identify the method
2735 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2736 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2737
2738 /* we can make use of server redirect on GET and HEAD */
2739 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2740 s->flags |= SF_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2741
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2742 /*
2743 * 2: check if the URI matches the monitor_uri.
2744 * We have to do this for every request which gets in, because
2745 * the monitor-uri is defined by the frontend.
2746 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2747 if (unlikely((sess->fe->monitor_uri_len != 0) &&
2748 (sess->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2749 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2750 sess->fe->monitor_uri,
2751 sess->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2752 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2753 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2754 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2755 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2756
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2757 s->flags |= SF_MONITOR;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2758 sess->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2759
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2760 /* Check if we want to fail this monitor request or not */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2761 list_for_each_entry(cond, &sess->fe->mon_fail_cond, list) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]2762 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]2763
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2764 ret = acl_pass(ret);
2765 if (cond->pol == ACL_COND_UNLESS)
2766 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2767
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2768 if (ret) {
2769 /* we fail this request, let's return 503 service unavail */
2770 txn->status = 503;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2771 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_503));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2772 if (!(s->flags & SF_ERR_MASK))
2773 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2774 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2775 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2776 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2777
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2778 /* nothing to fail, let's reply normaly */
2779 txn->status = 200;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2780 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_200));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2781 if (!(s->flags & SF_ERR_MASK))
2782 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2783 goto return_prx_cond;
2784 }
2785
2786 /*
2787 * 3: Maybe we have to copy the original REQURI for the logs ?
2788 * Note: we cannot log anymore if the request has been
2789 * classified as invalid.
2790 */
2791 if (unlikely(s->logs.logwait & LW_REQ)) {
2792 /* we have a complete HTTP request that we must log */
2793 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2794 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2795
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2796 if (urilen >= REQURI_LEN)
2797 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2798 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2799 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2800
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2801 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2802 s->do_log(s);
2803 } else {
2804 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2805 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2806 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2807
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]2808 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
2809 * exactly one digit "." one digit. This check may be disabled using
2810 * option accept-invalid-http-request.
2811 */
2812 if (!(sess->fe->options2 & PR_O2_REQBUG_OK)) {
2813 if (msg->sl.rq.v_l != 8) {
2814 msg->err_pos = msg->sl.rq.v;
2815 goto return_bad_req;
2816 }
2817
2818 if (req->buf->p[msg->sl.rq.v + 4] != '/' ||
2819 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 5]) ||
2820 req->buf->p[msg->sl.rq.v + 6] != '.' ||
2821 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 7])) {
2822 msg->err_pos = msg->sl.rq.v + 4;
2823 goto return_bad_req;
2824 }
2825 }
Willy Tarreau13317662015-05-01 13:47:08 +0200[diff] [blame]2826 else {
2827 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
2828 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
2829 goto return_bad_req;
2830 }
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]2831
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2832 /* ... and check if the request is HTTP/1.1 or above */
2833 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2834 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2835 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2836 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2837 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2838
2839 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2840 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]2841
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2842 /* if the frontend has "option http-use-proxy-header", we'll check if
2843 * we have what looks like a proxied connection instead of a connection,
2844 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2845 * Note that this is *not* RFC-compliant, however browsers and proxies
2846 * happen to do that despite being non-standard :-(
2847 * We consider that a request not beginning with either '/' or '*' is
2848 * a proxied connection, which covers both "scheme://location" and
2849 * CONNECT ip:port.
2850 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2851 if ((sess->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2852 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2853 txn->flags |= TX_USE_PX_CONN;
2854
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2855 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2856 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2857
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2858 /* 5: we may need to capture headers */
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]2859 if (unlikely((s->logs.logwait & LW_REQHDR) && s->req_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2860 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]2861 s->req_cap, sess->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2862
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2863 /* 6: determine the transfer-length according to RFC2616 #4.4, updated
2864 * by RFC7230#3.3.3 :
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2865 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2866 * The length of a message body is determined by one of the following
2867 * (in order of precedence):
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2868 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2869 * 1. Any response to a HEAD request and any response with a 1xx
2870 * (Informational), 204 (No Content), or 304 (Not Modified) status
2871 * code is always terminated by the first empty line after the
2872 * header fields, regardless of the header fields present in the
2873 * message, and thus cannot contain a message body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2874 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2875 * 2. Any 2xx (Successful) response to a CONNECT request implies that
2876 * the connection will become a tunnel immediately after the empty
2877 * line that concludes the header fields. A client MUST ignore any
2878 * Content-Length or Transfer-Encoding header fields received in
2879 * such a message.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2880 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2881 * 3. If a Transfer-Encoding header field is present and the chunked
2882 * transfer coding (Section 4.1) is the final encoding, the message
2883 * body length is determined by reading and decoding the chunked
2884 * data until the transfer coding indicates the data is complete.
2885 *
2886 * If a Transfer-Encoding header field is present in a response and
2887 * the chunked transfer coding is not the final encoding, the
2888 * message body length is determined by reading the connection until
2889 * it is closed by the server. If a Transfer-Encoding header field
2890 * is present in a request and the chunked transfer coding is not
2891 * the final encoding, the message body length cannot be determined
2892 * reliably; the server MUST respond with the 400 (Bad Request)
2893 * status code and then close the connection.
2894 *
2895 * If a message is received with both a Transfer-Encoding and a
2896 * Content-Length header field, the Transfer-Encoding overrides the
2897 * Content-Length. Such a message might indicate an attempt to
2898 * perform request smuggling (Section 9.5) or response splitting
2899 * (Section 9.4) and ought to be handled as an error. A sender MUST
2900 * remove the received Content-Length field prior to forwarding such
2901 * a message downstream.
2902 *
2903 * 4. If a message is received without Transfer-Encoding and with
2904 * either multiple Content-Length header fields having differing
2905 * field-values or a single Content-Length header field having an
2906 * invalid value, then the message framing is invalid and the
2907 * recipient MUST treat it as an unrecoverable error. If this is a
2908 * request message, the server MUST respond with a 400 (Bad Request)
2909 * status code and then close the connection. If this is a response
2910 * message received by a proxy, the proxy MUST close the connection
2911 * to the server, discard the received response, and send a 502 (Bad
2912 * Gateway) response to the client. If this is a response message
2913 * received by a user agent, the user agent MUST close the
2914 * connection to the server and discard the received response.
2915 *
2916 * 5. If a valid Content-Length header field is present without
2917 * Transfer-Encoding, its decimal value defines the expected message
2918 * body length in octets. If the sender closes the connection or
2919 * the recipient times out before the indicated number of octets are
2920 * received, the recipient MUST consider the message to be
2921 * incomplete and close the connection.
2922 *
2923 * 6. If this is a request message and none of the above are true, then
2924 * the message body length is zero (no message body is present).
2925 *
2926 * 7. Otherwise, this is a response message without a declared message
2927 * body length, so the message body length is determined by the
2928 * number of octets received prior to the server closing the
2929 * connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2930 */
2931
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2932 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2933 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]2934 while (http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2935 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2936 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2937 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]2938 /* chunked not last, return badreq */
2939 goto return_bad_req;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2940 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2941 }
2942
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]2943 /* Chunked requests must have their content-length removed */
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2944 ctx.idx = 0;
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]2945 if (msg->flags & HTTP_MSGF_TE_CHNK) {
2946 while (http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx))
2947 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2948 }
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]2949 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]2950 signed long long cl;
2951
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2952 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2953 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2954 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2955 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2956
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2957 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2958 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2959 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2960 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2961
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2962 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2963 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2964 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2965 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2966
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2967 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2968 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2969 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2970 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2971
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2972 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2973 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2974 }
2975
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]2976 /* even bodyless requests have a known length */
2977 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2978
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]2979 /* Until set to anything else, the connection mode is set as Keep-Alive. It will
2980 * only change if both the request and the config reference something else.
2981 * Option httpclose by itself sets tunnel mode where headers are mangled.
2982 * However, if another mode is set, it will affect it (eg: server-close/
2983 * keep-alive + httpclose = close). Note that we avoid to redo the same work
2984 * if FE and BE have the same settings (common). The method consists in
2985 * checking if options changed between the two calls (implying that either
2986 * one is non-null, or one of them is non-null and we are there for the first
2987 * time.
2988 */
2989 if (!(txn->flags & TX_HDR_CONN_PRS) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2990 ((sess->fe->options & PR_O_HTTP_MODE) != (s->be->options & PR_O_HTTP_MODE)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2991 http_adjust_conn_mode(s, txn, msg);
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]2992
Willy Tarreau9fbe18e2015-05-01 22:42:08 +0200[diff] [blame]2993 /* we may have to wait for the request's body */
2994 if ((s->be->options & PR_O_WREQ_BODY) &&
2995 (msg->body_len || (msg->flags & HTTP_MSGF_TE_CHNK)))
2996 req->analysers |= AN_REQ_HTTP_BODY;
2997
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2998 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2999 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3000 req->analyse_exp = TICK_ETERNITY;
3001 return 1;
3002
3003 return_bad_req:
3004 /* We centralize bad requests processing here */
3005 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3006 /* we detected a parsing error. We want to archive this request
3007 * in the dedicated proxy area for later troubleshooting.
3008 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3009 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3010 }
3011
3012 txn->req.msg_state = HTTP_MSG_ERROR;
3013 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]3014 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3015
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3016 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]3017 if (sess->listener->counters)
3018 sess->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3019
3020 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]3021 if (!(s->flags & SF_ERR_MASK))
3022 s->flags |= SF_ERR_PRXCOND;
3023 if (!(s->flags & SF_FINST_MASK))
3024 s->flags |= SF_FINST_R;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3025
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]3026 req->analysers &= AN_FLT_END;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3027 req->analyse_exp = TICK_ETERNITY;
3028 return 0;
3029}
3030
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]3031
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3032/* This function prepares an applet to handle the stats. It can deal with the
3033 * "100-continue" expectation, check that admin rules are met for POST requests,
3034 * and program a response message if something was unexpected. It cannot fail
3035 * 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]3036 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3037 * s->target which is supposed to already point to the stats applet. The caller
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3038 * is expected to have already assigned an appctx to the stream.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3039 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3040int http_handle_stats(struct stream *s, struct channel *req)
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3041{
3042 struct stats_admin_rule *stats_admin_rule;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]3043 struct stream_interface *si = &s->si[1];
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3044 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3045 struct http_txn *txn = s->txn;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3046 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3047 struct uri_auth *uri_auth = s->be->uri_auth;
3048 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3049 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3050
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3051 appctx = si_appctx(si);
3052 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
3053 appctx->st1 = appctx->st2 = 0;
3054 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
3055 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3056 if ((msg->flags & HTTP_MSGF_VER_11) && (s->txn->meth != HTTP_METH_HEAD))
Willy Tarreauaf3cf702014-04-22 22:19:53 +0200[diff] [blame]3057 appctx->ctx.stats.flags |= STAT_CHUNKED;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3058
3059 uri = msg->chn->buf->p + msg->sl.rq.u;
3060 lookup = uri + uri_auth->uri_len;
3061
3062 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
3063 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3064 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3065 break;
3066 }
3067 }
3068
3069 if (uri_auth->refresh) {
3070 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
3071 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3072 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3073 break;
3074 }
3075 }
3076 }
3077
3078 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
3079 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3080 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3081 break;
3082 }
3083 }
3084
3085 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3086 if (memcmp(h, ";st=", 4) == 0) {
3087 int i;
3088 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3089 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3090 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
3091 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3092 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3093 break;
3094 }
3095 }
3096 break;
3097 }
3098 }
3099
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3100 appctx->ctx.stats.scope_str = 0;
3101 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3102 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3103 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
3104 int itx = 0;
3105 const char *h2;
3106 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
3107 const char *err;
3108
3109 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
3110 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3111 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3112 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
3113 itx++;
3114 h++;
3115 }
3116
3117 if (itx > STAT_SCOPE_TXT_MAXLEN)
3118 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3119 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3120
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3121 /* 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]3122 memcpy(scope_txt, h2, itx);
3123 scope_txt[itx] = '\0';
3124 err = invalid_char(scope_txt);
3125 if (err) {
3126 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3127 appctx->ctx.stats.scope_str = 0;
3128 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3129 }
3130 break;
3131 }
3132 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3133
3134 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3135 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3136 int ret = 1;
3137
3138 if (stats_admin_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3139 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]3140 ret = acl_pass(ret);
3141 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3142 ret = !ret;
3143 }
3144
3145 if (ret) {
3146 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3147 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3148 break;
3149 }
3150 }
3151
3152 /* Was the status page requested with a POST ? */
Willy Tarreaub8cdf522015-05-29 01:09:15 +0200[diff] [blame]3153 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3154 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreaucfe7fdd2014-04-26 22:08:32 +0200[diff] [blame]3155 /* we'll need the request body, possibly after sending 100-continue */
Willy Tarreaub8cdf522015-05-29 01:09:15 +0200[diff] [blame]3156 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE)
3157 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3158 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3159 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3160 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3161 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
3162 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]3163 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3164 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3165 else {
3166 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3167 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3168 }
3169
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3170 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3171 return 1;
3172}
3173
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3174/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
3175 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
3176 */
Thierry FOURNIER7fe75e02015-03-16 12:03:44 +0100[diff] [blame]3177void inet_set_tos(int fd, struct sockaddr_storage from, int tos)
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3178{
3179#ifdef IP_TOS
3180 if (from.ss_family == AF_INET)
3181 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3182#endif
3183#ifdef IPV6_TCLASS
3184 if (from.ss_family == AF_INET6) {
3185 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)&from)->sin6_addr))
3186 /* v4-mapped addresses need IP_TOS */
3187 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3188 else
3189 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
3190 }
3191#endif
3192}
3193
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3194int http_transform_header_str(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3195 const char* name, unsigned int name_len,
3196 const char *str, struct my_regex *re,
3197 int action)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3198{
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3199 struct hdr_ctx ctx;
3200 char *buf = msg->chn->buf->p;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3201 struct hdr_idx *idx = &s->txn->hdr_idx;
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3202 int (*http_find_hdr_func)(const char *name, int len, char *sol,
3203 struct hdr_idx *idx, struct hdr_ctx *ctx);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3204 struct chunk *output = get_trash_chunk();
3205
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3206 ctx.idx = 0;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3207
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3208 /* Choose the header browsing function. */
3209 switch (action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3210 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3211 http_find_hdr_func = http_find_header2;
3212 break;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3213 case ACT_HTTP_REPLACE_HDR:
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3214 http_find_hdr_func = http_find_full_header2;
3215 break;
3216 default: /* impossible */
3217 return -1;
3218 }
3219
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3220 while (http_find_hdr_func(name, name_len, buf, idx, &ctx)) {
3221 struct hdr_idx_elem *hdr = idx->v + ctx.idx;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3222 int delta;
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3223 char *val = ctx.line + ctx.val;
3224 char* val_end = val + ctx.vlen;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3225
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3226 if (!regex_exec_match2(re, val, val_end-val, MAX_MATCH, pmatch, 0))
3227 continue;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3228
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3229 output->len = exp_replace(output->str, output->size, val, str, pmatch);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3230 if (output->len == -1)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3231 return -1;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3232
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3233 delta = buffer_replace2(msg->chn->buf, val, val_end, output->str, output->len);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3234
3235 hdr->len += delta;
3236 http_msg_move_end(msg, delta);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3237
3238 /* Adjust the length of the current value of the index. */
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3239 ctx.vlen += delta;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3240 }
3241
3242 return 0;
3243}
3244
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3245static int http_transform_header(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3246 const char* name, unsigned int name_len,
3247 struct list *fmt, struct my_regex *re,
3248 int action)
3249{
3250 struct chunk *replace = get_trash_chunk();
3251
3252 replace->len = build_logline(s, replace->str, replace->size, fmt);
3253 if (replace->len >= replace->size - 1)
3254 return -1;
3255
3256 return http_transform_header_str(s, msg, name, name_len, replace->str, re, action);
3257}
3258
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3259/* Executes the http-request rules <rules> for stream <s>, proxy <px> and
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3260 * transaction <txn>. Returns the verdict of the first rule that prevents
3261 * further processing of the request (auth, deny, ...), and defaults to
3262 * HTTP_RULE_RES_STOP if it executed all rules or stopped on an allow, or
3263 * HTTP_RULE_RES_CONT if the last rule was reached. It may set the TX_CLTARPIT
3264 * on txn->flags if it encounters a tarpit rule.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3265 */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3266enum rule_result
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3267http_req_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3268{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3269 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3270 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3271 struct connection *cli_conn;
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]3272 struct act_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3273 struct hdr_ctx ctx;
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3274 const char *auth_realm;
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3275 int act_flags = 0;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3276
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3277 /* If "the current_rule_list" match the executed rule list, we are in
3278 * resume condition. If a resume is needed it is always in the action
3279 * and never in the ACL or converters. In this case, we initialise the
3280 * current rule, and go to the action execution point.
3281 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3282 if (s->current_rule) {
3283 rule = s->current_rule;
3284 s->current_rule = NULL;
3285 if (s->current_rule_list == rules)
3286 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3287 }
3288 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3289
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3290 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3291
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3292 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3293 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3294 int ret;
3295
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3296 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]3297 ret = acl_pass(ret);
3298
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3299 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3300 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3301
3302 if (!ret) /* condition not matched */
3303 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3304 }
3305
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3306 act_flags |= ACT_FLAG_FIRST;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3307resume_execution:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3308 switch (rule->action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3309 case ACT_ACTION_ALLOW:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3310 return HTTP_RULE_RES_STOP;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3311
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3312 case ACT_ACTION_DENY:
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]3313 txn->rule_deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3314 return HTTP_RULE_RES_DENY;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3315
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3316 case ACT_HTTP_REQ_TARPIT:
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3317 txn->flags |= TX_CLTARPIT;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]3318 txn->rule_deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3319 return HTTP_RULE_RES_DENY;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3320
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3321 case ACT_HTTP_REQ_AUTH:
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3322 /* Auth might be performed on regular http-req rules as well as on stats */
3323 auth_realm = rule->arg.auth.realm;
3324 if (!auth_realm) {
3325 if (px->uri_auth && rules == &px->uri_auth->http_req_rules)
3326 auth_realm = STATS_DEFAULT_REALM;
3327 else
3328 auth_realm = px->id;
3329 }
3330 /* send 401/407 depending on whether we use a proxy or not. We still
3331 * count one error, because normal browsing won't significantly
3332 * increase the counter but brute force attempts will.
3333 */
3334 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, auth_realm);
3335 txn->status = (txn->flags & TX_USE_PX_CONN) ? 407 : 401;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]3336 http_reply_and_close(s, txn->status, &trash);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3337 stream_inc_http_err_ctr(s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3338 return HTTP_RULE_RES_ABRT;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3339
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3340 case ACT_HTTP_REDIR:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3341 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3342 return HTTP_RULE_RES_BADREQ;
3343 return HTTP_RULE_RES_DONE;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3344
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3345 case ACT_HTTP_SET_NICE:
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3346 s->task->nice = rule->arg.nice;
3347 break;
3348
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3349 case ACT_HTTP_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3350 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3351 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]3352 break;
3353
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3354 case ACT_HTTP_SET_MARK:
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3355#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3356 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3357 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]3358#endif
3359 break;
3360
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3361 case ACT_HTTP_SET_LOGL:
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3362 s->logs.level = rule->arg.loglevel;
3363 break;
3364
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3365 case ACT_HTTP_REPLACE_HDR:
3366 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3367 if (http_transform_header(s, &txn->req, rule->arg.hdr_add.name,
3368 rule->arg.hdr_add.name_len,
3369 &rule->arg.hdr_add.fmt,
3370 &rule->arg.hdr_add.re, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3371 return HTTP_RULE_RES_BADREQ;
3372 break;
3373
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3374 case ACT_HTTP_DEL_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3375 ctx.idx = 0;
3376 /* remove all occurrences of the header */
3377 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3378 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3379 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3380 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3381 break;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3382
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3383 case ACT_HTTP_SET_HDR:
3384 case ACT_HTTP_ADD_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3385 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3386 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3387 trash.len = rule->arg.hdr_add.name_len;
3388 trash.str[trash.len++] = ':';
3389 trash.str[trash.len++] = ' ';
3390 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]3391
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3392 if (rule->action == ACT_HTTP_SET_HDR) {
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3393 /* remove all occurrences of the header */
3394 ctx.idx = 0;
3395 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3396 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3397 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
3398 }
3399 }
3400
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3401 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3402 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3403
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3404 case ACT_HTTP_DEL_ACL:
3405 case ACT_HTTP_DEL_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3406 struct pat_ref *ref;
3407 char *key;
3408 int len;
3409
3410 /* collect reference */
3411 ref = pat_ref_lookup(rule->arg.map.ref);
3412 if (!ref)
3413 continue;
3414
3415 /* collect key */
3416 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3417 key = trash.str;
3418 key[len] = '\0';
3419
3420 /* perform update */
3421 /* returned code: 1=ok, 0=ko */
3422 pat_ref_delete(ref, key);
3423
3424 break;
3425 }
3426
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3427 case ACT_HTTP_ADD_ACL: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3428 struct pat_ref *ref;
3429 char *key;
3430 struct chunk *trash_key;
3431 int len;
3432
3433 trash_key = get_trash_chunk();
3434
3435 /* collect reference */
3436 ref = pat_ref_lookup(rule->arg.map.ref);
3437 if (!ref)
3438 continue;
3439
3440 /* collect key */
3441 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3442 key = trash_key->str;
3443 key[len] = '\0';
3444
3445 /* perform update */
3446 /* add entry only if it does not already exist */
3447 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3448 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3449
3450 break;
3451 }
3452
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3453 case ACT_HTTP_SET_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3454 struct pat_ref *ref;
3455 char *key, *value;
3456 struct chunk *trash_key, *trash_value;
3457 int len;
3458
3459 trash_key = get_trash_chunk();
3460 trash_value = get_trash_chunk();
3461
3462 /* collect reference */
3463 ref = pat_ref_lookup(rule->arg.map.ref);
3464 if (!ref)
3465 continue;
3466
3467 /* collect key */
3468 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3469 key = trash_key->str;
3470 key[len] = '\0';
3471
3472 /* collect value */
3473 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3474 value = trash_value->str;
3475 value[len] = '\0';
3476
3477 /* perform update */
3478 if (pat_ref_find_elt(ref, key) != NULL)
3479 /* update entry if it exists */
3480 pat_ref_set(ref, key, value, NULL);
3481 else
3482 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3483 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3484
3485 break;
3486 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3487
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3488 case ACT_CUSTOM:
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3489 if ((px->options & PR_O_ABRT_CLOSE) && (s->req.flags & (CF_SHUTR|CF_READ_NULL|CF_READ_ERROR)))
3490 act_flags |= ACT_FLAG_FINAL;
Willy Tarreau39458682015-09-27 10:33:15 +0200[diff] [blame]3491
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3492 switch (rule->action_ptr(rule, px, s->sess, s, act_flags)) {
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3493 case ACT_RET_ERR:
3494 case ACT_RET_CONT:
3495 break;
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3496 case ACT_RET_STOP:
3497 return HTTP_RULE_RES_DONE;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3498 case ACT_RET_YIELD:
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3499 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3500 return HTTP_RULE_RES_YIELD;
3501 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3502 break;
3503
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3504 case ACT_ACTION_TRK_SC0 ... ACT_ACTION_TRK_SCMAX:
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3505 /* Note: only the first valid tracking parameter of each
3506 * applies.
3507 */
3508
3509 if (stkctr_entry(&s->stkctr[http_req_trk_idx(rule->action)]) == NULL) {
3510 struct stktable *t;
3511 struct stksess *ts;
3512 struct stktable_key *key;
3513 void *ptr;
3514
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]3515 t = rule->arg.trk_ctr.table.t;
3516 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]3517
3518 if (key && (ts = stktable_get_entry(t, key))) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3519 stream_track_stkctr(&s->stkctr[http_req_trk_idx(rule->action)], t, ts);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3520
3521 /* let's count a new HTTP request as it's the first time we do it */
3522 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT);
3523 if (ptr)
3524 stktable_data_cast(ptr, http_req_cnt)++;
3525
3526 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE);
3527 if (ptr)
3528 update_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
3529 t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1);
3530
3531 stkctr_set_flags(&s->stkctr[http_req_trk_idx(rule->action)], STKCTR_TRACK_CONTENT);
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3532 if (sess->fe != s->be)
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3533 stkctr_set_flags(&s->stkctr[http_req_trk_idx(rule->action)], STKCTR_TRACK_BACKEND);
3534 }
3535 }
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3536 break;
3537
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3538 case ACT_HTTP_REQ_SET_SRC:
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3539 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn)) {
3540 struct sample *smp;
3541
Thierry FOURNIERa002dc92015-07-31 08:50:51 +0200[diff] [blame]3542 smp = sample_fetch_as_type(px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL, rule->arg.expr, SMP_T_ADDR);
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3543
3544 if (smp) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]3545 if (smp->data.type == SMP_T_IPV4) {
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3546 ((struct sockaddr_in *)&cli_conn->addr.from)->sin_family = AF_INET;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]3547 ((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr = smp->data.u.ipv4.s_addr;
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3548 ((struct sockaddr_in *)&cli_conn->addr.from)->sin_port = 0;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]3549 } else if (smp->data.type == SMP_T_IPV6) {
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3550 ((struct sockaddr_in6 *)&cli_conn->addr.from)->sin6_family = AF_INET6;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]3551 memcpy(&((struct sockaddr_in6 *)&cli_conn->addr.from)->sin6_addr, &smp->data.u.ipv6, sizeof(struct in6_addr));
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3552 ((struct sockaddr_in6 *)&cli_conn->addr.from)->sin6_port = 0;
3553 }
3554 }
3555 }
3556 break;
Thierry FOURNIER22e49012015-08-05 19:13:48 +0200[diff] [blame]3557
3558 /* other flags exists, but normaly, they never be matched. */
3559 default:
3560 break;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3561 }
3562 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3563
3564 /* we reached the end of the rules, nothing to report */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3565 return HTTP_RULE_RES_CONT;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3566}
3567
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3568
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3569/* Executes the http-response rules <rules> for stream <s> and proxy <px>. It
3570 * returns one of 5 possible statuses: HTTP_RULE_RES_CONT, HTTP_RULE_RES_STOP,
3571 * HTTP_RULE_RES_DONE, HTTP_RULE_RES_YIELD, or HTTP_RULE_RES_BADREQ. If *CONT
3572 * is returned, the process can continue the evaluation of next rule list. If
3573 * *STOP or *DONE is returned, the process must stop the evaluation. If *BADREQ
3574 * is returned, it means the operation could not be processed and a server error
3575 * must be returned. It may set the TX_SVDENY on txn->flags if it encounters a
3576 * deny rule. If *YIELD is returned, the caller must call again the function
3577 * with the same context.
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3578 */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3579static enum rule_result
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3580http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s)
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3581{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3582 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3583 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3584 struct connection *cli_conn;
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]3585 struct act_rule *rule;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3586 struct hdr_ctx ctx;
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3587 int act_flags = 0;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3588
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3589 /* If "the current_rule_list" match the executed rule list, we are in
3590 * resume condition. If a resume is needed it is always in the action
3591 * and never in the ACL or converters. In this case, we initialise the
3592 * current rule, and go to the action execution point.
3593 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3594 if (s->current_rule) {
3595 rule = s->current_rule;
3596 s->current_rule = NULL;
3597 if (s->current_rule_list == rules)
3598 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3599 }
3600 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3601
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3602 list_for_each_entry(rule, rules, list) {
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3603
3604 /* check optional condition */
3605 if (rule->cond) {
3606 int ret;
3607
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3608 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]3609 ret = acl_pass(ret);
3610
3611 if (rule->cond->pol == ACL_COND_UNLESS)
3612 ret = !ret;
3613
3614 if (!ret) /* condition not matched */
3615 continue;
3616 }
3617
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3618 act_flags |= ACT_FLAG_FIRST;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3619resume_execution:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3620 switch (rule->action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3621 case ACT_ACTION_ALLOW:
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3622 return HTTP_RULE_RES_STOP; /* "allow" rules are OK */
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3623
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3624 case ACT_ACTION_DENY:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3625 txn->flags |= TX_SVDENY;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3626 return HTTP_RULE_RES_STOP;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3627
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3628 case ACT_HTTP_SET_NICE:
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3629 s->task->nice = rule->arg.nice;
3630 break;
3631
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3632 case ACT_HTTP_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3633 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3634 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]3635 break;
3636
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3637 case ACT_HTTP_SET_MARK:
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3638#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3639 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3640 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]3641#endif
3642 break;
3643
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3644 case ACT_HTTP_SET_LOGL:
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3645 s->logs.level = rule->arg.loglevel;
3646 break;
3647
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3648 case ACT_HTTP_REPLACE_HDR:
3649 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3650 if (http_transform_header(s, &txn->rsp, rule->arg.hdr_add.name,
3651 rule->arg.hdr_add.name_len,
3652 &rule->arg.hdr_add.fmt,
3653 &rule->arg.hdr_add.re, rule->action))
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3654 return HTTP_RULE_RES_STOP; /* note: we should report an error here */
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3655 break;
3656
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3657 case ACT_HTTP_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3658 ctx.idx = 0;
3659 /* remove all occurrences of the header */
3660 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3661 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3662 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3663 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3664 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3665
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3666 case ACT_HTTP_SET_HDR:
3667 case ACT_HTTP_ADD_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3668 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3669 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3670 trash.len = rule->arg.hdr_add.name_len;
3671 trash.str[trash.len++] = ':';
3672 trash.str[trash.len++] = ' ';
3673 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]3674
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3675 if (rule->action == ACT_HTTP_SET_HDR) {
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3676 /* remove all occurrences of the header */
3677 ctx.idx = 0;
3678 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3679 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3680 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3681 }
3682 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3683 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3684 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3685
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3686 case ACT_HTTP_DEL_ACL:
3687 case ACT_HTTP_DEL_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3688 struct pat_ref *ref;
3689 char *key;
3690 int len;
3691
3692 /* collect reference */
3693 ref = pat_ref_lookup(rule->arg.map.ref);
3694 if (!ref)
3695 continue;
3696
3697 /* collect key */
3698 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3699 key = trash.str;
3700 key[len] = '\0';
3701
3702 /* perform update */
3703 /* returned code: 1=ok, 0=ko */
3704 pat_ref_delete(ref, key);
3705
3706 break;
3707 }
3708
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3709 case ACT_HTTP_ADD_ACL: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3710 struct pat_ref *ref;
3711 char *key;
3712 struct chunk *trash_key;
3713 int len;
3714
3715 trash_key = get_trash_chunk();
3716
3717 /* collect reference */
3718 ref = pat_ref_lookup(rule->arg.map.ref);
3719 if (!ref)
3720 continue;
3721
3722 /* collect key */
3723 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3724 key = trash_key->str;
3725 key[len] = '\0';
3726
3727 /* perform update */
3728 /* check if the entry already exists */
3729 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3730 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3731
3732 break;
3733 }
3734
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3735 case ACT_HTTP_SET_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3736 struct pat_ref *ref;
3737 char *key, *value;
3738 struct chunk *trash_key, *trash_value;
3739 int len;
3740
3741 trash_key = get_trash_chunk();
3742 trash_value = get_trash_chunk();
3743
3744 /* collect reference */
3745 ref = pat_ref_lookup(rule->arg.map.ref);
3746 if (!ref)
3747 continue;
3748
3749 /* collect key */
3750 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3751 key = trash_key->str;
3752 key[len] = '\0';
3753
3754 /* collect value */
3755 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3756 value = trash_value->str;
3757 value[len] = '\0';
3758
3759 /* perform update */
3760 if (pat_ref_find_elt(ref, key) != NULL)
3761 /* update entry if it exists */
3762 pat_ref_set(ref, key, value, NULL);
3763 else
3764 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3765 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3766
3767 break;
3768 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3769
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3770 case ACT_HTTP_REDIR:
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3771 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3772 return HTTP_RULE_RES_BADREQ;
3773 return HTTP_RULE_RES_DONE;
3774
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3775 case ACT_CUSTOM:
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3776 if ((px->options & PR_O_ABRT_CLOSE) && (s->req.flags & (CF_SHUTR|CF_READ_NULL|CF_READ_ERROR)))
3777 act_flags |= ACT_FLAG_FINAL;
Willy Tarreau39458682015-09-27 10:33:15 +0200[diff] [blame]3778
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3779 switch (rule->action_ptr(rule, px, s->sess, s, act_flags)) {
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3780 case ACT_RET_ERR:
3781 case ACT_RET_CONT:
3782 break;
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3783 case ACT_RET_STOP:
3784 return HTTP_RULE_RES_STOP;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3785 case ACT_RET_YIELD:
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3786 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3787 return HTTP_RULE_RES_YIELD;
3788 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3789 break;
3790
Thierry FOURNIER22e49012015-08-05 19:13:48 +0200[diff] [blame]3791 /* other flags exists, but normaly, they never be matched. */
3792 default:
3793 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3794 }
3795 }
3796
3797 /* we reached the end of the rules, nothing to report */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3798 return HTTP_RULE_RES_CONT;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3799}
3800
3801
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3802/* Perform an HTTP redirect based on the information in <rule>. The function
3803 * returns non-zero on success, or zero in case of a, irrecoverable error such
3804 * as too large a request to build a valid response.
3805 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3806static 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]3807{
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3808 struct http_msg *req = &txn->req;
3809 struct http_msg *res = &txn->rsp;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3810 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3811 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3812
3813 /* build redirect message */
3814 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3815 case 308:
3816 msg_fmt = HTTP_308;
3817 break;
3818 case 307:
3819 msg_fmt = HTTP_307;
3820 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3821 case 303:
3822 msg_fmt = HTTP_303;
3823 break;
3824 case 301:
3825 msg_fmt = HTTP_301;
3826 break;
3827 case 302:
3828 default:
3829 msg_fmt = HTTP_302;
3830 break;
3831 }
3832
3833 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3834 return 0;
3835
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3836 location = trash.str + trash.len;
3837
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3838 switch(rule->type) {
3839 case REDIRECT_TYPE_SCHEME: {
3840 const char *path;
3841 const char *host;
3842 struct hdr_ctx ctx;
3843 int pathlen;
3844 int hostlen;
3845
3846 host = "";
3847 hostlen = 0;
3848 ctx.idx = 0;
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3849 if (http_find_header2("Host", 4, req->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3850 host = ctx.line + ctx.val;
3851 hostlen = ctx.vlen;
3852 }
3853
3854 path = http_get_path(txn);
3855 /* build message using path */
3856 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3857 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]3858 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3859 int qs = 0;
3860 while (qs < pathlen) {
3861 if (path[qs] == '?') {
3862 pathlen = qs;
3863 break;
3864 }
3865 qs++;
3866 }
3867 }
3868 } else {
3869 path = "/";
3870 pathlen = 1;
3871 }
3872
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3873 if (rule->rdr_str) { /* this is an old "redirect" rule */
3874 /* check if we can add scheme + "://" + host + path */
3875 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3876 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3877
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3878 /* add scheme */
3879 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3880 trash.len += rule->rdr_len;
3881 }
3882 else {
3883 /* add scheme with executing log format */
3884 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3885
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3886 /* check if we can add scheme + "://" + host + path */
3887 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
3888 return 0;
3889 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3890 /* add "://" */
3891 memcpy(trash.str + trash.len, "://", 3);
3892 trash.len += 3;
3893
3894 /* add host */
3895 memcpy(trash.str + trash.len, host, hostlen);
3896 trash.len += hostlen;
3897
3898 /* add path */
3899 memcpy(trash.str + trash.len, path, pathlen);
3900 trash.len += pathlen;
3901
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3902 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3903 if (trash.len && trash.str[trash.len - 1] != '/' &&
3904 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3905 if (trash.len > trash.size - 5)
3906 return 0;
3907 trash.str[trash.len] = '/';
3908 trash.len++;
3909 }
3910
3911 break;
3912 }
3913 case REDIRECT_TYPE_PREFIX: {
3914 const char *path;
3915 int pathlen;
3916
3917 path = http_get_path(txn);
3918 /* build message using path */
3919 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3920 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]3921 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3922 int qs = 0;
3923 while (qs < pathlen) {
3924 if (path[qs] == '?') {
3925 pathlen = qs;
3926 break;
3927 }
3928 qs++;
3929 }
3930 }
3931 } else {
3932 path = "/";
3933 pathlen = 1;
3934 }
3935
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3936 if (rule->rdr_str) { /* this is an old "redirect" rule */
3937 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
3938 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3939
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3940 /* add prefix. Note that if prefix == "/", we don't want to
3941 * add anything, otherwise it makes it hard for the user to
3942 * configure a self-redirection.
3943 */
3944 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
3945 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3946 trash.len += rule->rdr_len;
3947 }
3948 }
3949 else {
3950 /* add prefix with executing log format */
3951 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
3952
3953 /* Check length */
3954 if (trash.len + pathlen > trash.size - 4)
3955 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3956 }
3957
3958 /* add path */
3959 memcpy(trash.str + trash.len, path, pathlen);
3960 trash.len += pathlen;
3961
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3962 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3963 if (trash.len && trash.str[trash.len - 1] != '/' &&
3964 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3965 if (trash.len > trash.size - 5)
3966 return 0;
3967 trash.str[trash.len] = '/';
3968 trash.len++;
3969 }
3970
3971 break;
3972 }
3973 case REDIRECT_TYPE_LOCATION:
3974 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3975 if (rule->rdr_str) { /* this is an old "redirect" rule */
3976 if (trash.len + rule->rdr_len > trash.size - 4)
3977 return 0;
3978
3979 /* add location */
3980 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3981 trash.len += rule->rdr_len;
3982 }
3983 else {
3984 /* add location with executing log format */
3985 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3986
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3987 /* Check left length */
3988 if (trash.len > trash.size - 4)
3989 return 0;
3990 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3991 break;
3992 }
3993
3994 if (rule->cookie_len) {
3995 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3996 trash.len += 14;
3997 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3998 trash.len += rule->cookie_len;
3999 memcpy(trash.str + trash.len, "\r\n", 2);
4000 trash.len += 2;
4001 }
4002
4003 /* add end of headers and the keep-alive/close status.
4004 * We may choose to set keep-alive if the Location begins
4005 * with a slash, because the client will come back to the
4006 * same server.
4007 */
4008 txn->status = rule->code;
4009 /* let's log the request time */
4010 s->logs.tv_request = now;
4011
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4012 if (*location == '/' &&
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4013 (req->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau2de8a502015-05-28 17:23:54 +0200[diff] [blame]4014 ((!(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]4015 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
4016 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
4017 /* keep-alive possible */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4018 if (!(req->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4019 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4020 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
4021 trash.len += 30;
4022 } else {
4023 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
4024 trash.len += 24;
4025 }
4026 }
4027 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
4028 trash.len += 4;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]4029 FLT_STRM_CB(s, flt_http_reply(s, txn->status, &trash));
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4030 bo_inject(res->chn, trash.str, trash.len);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4031 /* "eat" the request */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4032 bi_fast_delete(req->chn->buf, req->sov);
4033 req->next -= req->sov;
4034 req->sov = 0;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4035 s->req.analysers = AN_REQ_HTTP_XFER_BODY | (s->req.analysers & AN_FLT_END);
4036 s->res.analysers = AN_RES_HTTP_XFER_BODY | (s->req.analysers & AN_FLT_END);
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4037 req->msg_state = HTTP_MSG_CLOSED;
4038 res->msg_state = HTTP_MSG_DONE;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]4039 /* Trim any possible response */
4040 res->chn->buf->i = 0;
4041 res->next = res->sov = 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4042 } else {
4043 /* keep-alive not possible */
4044 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4045 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
4046 trash.len += 29;
4047 } else {
4048 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
4049 trash.len += 23;
4050 }
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4051 http_reply_and_close(s, txn->status, &trash);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4052 req->chn->analysers &= AN_FLT_END;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4053 }
4054
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4055 if (!(s->flags & SF_ERR_MASK))
4056 s->flags |= SF_ERR_LOCAL;
4057 if (!(s->flags & SF_FINST_MASK))
4058 s->flags |= SF_FINST_R;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4059
4060 return 1;
4061}
4062
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4063/* This stream analyser runs all HTTP request processing which is common to
4064 * frontends and backends, which means blocking ACLs, filters, connection-close,
4065 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4066 * 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]4067 * either needs more data or wants to immediately abort the request (eg: deny,
4068 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4069 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4070int 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]4071{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4072 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4073 struct http_txn *txn = s->txn;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4074 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4075 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]4076 struct cond_wordlist *wl;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4077 enum rule_result verdict;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4078
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4079 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4080 /* we need more data */
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4081 goto return_prx_yield;
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4082 }
4083
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4084 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]4085 now_ms, __FUNCTION__,
4086 s,
4087 req,
4088 req->rex, req->wex,
4089 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4090 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4091 req->analysers);
4092
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4093 /* just in case we have some per-backend tracking */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4094 stream_inc_be_http_req_ctr(s);
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4095
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4096 /* evaluate http-request rules */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4097 if (!LIST_ISEMPTY(&px->http_req_rules)) {
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]4098 verdict = http_req_get_intercept_rule(px, &px->http_req_rules, s);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]4099
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4100 switch (verdict) {
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4101 case HTTP_RULE_RES_YIELD: /* some data miss, call the function later. */
4102 goto return_prx_yield;
4103
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4104 case HTTP_RULE_RES_CONT:
4105 case HTTP_RULE_RES_STOP: /* nothing to do */
4106 break;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4107
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4108 case HTTP_RULE_RES_DENY: /* deny or tarpit */
4109 if (txn->flags & TX_CLTARPIT)
4110 goto tarpit;
4111 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4112
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4113 case HTTP_RULE_RES_ABRT: /* abort request, response already sent. Eg: auth */
4114 goto return_prx_cond;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4115
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4116 case HTTP_RULE_RES_DONE: /* OK, but terminate request processing (eg: redirect) */
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4117 goto done;
4118
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4119 case HTTP_RULE_RES_BADREQ: /* failed with a bad request */
4120 goto return_bad_req;
4121 }
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4122 }
4123
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4124 /* OK at this stage, we know that the request was accepted according to
4125 * the http-request rules, we can check for the stats. Note that the
4126 * URI is detected *before* the req* rules in order not to be affected
4127 * by a possible reqrep, while they are processed *after* so that a
4128 * reqdeny can still block them. This clearly needs to change in 1.6!
4129 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4130 if (stats_check_uri(&s->si[1], txn, px)) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4131 s->target = &http_stats_applet.obj_type;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4132 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target)))) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4133 txn->status = 500;
4134 s->logs.tv_request = now;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4135 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]4136
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4137 if (!(s->flags & SF_ERR_MASK))
4138 s->flags |= SF_ERR_RESOURCE;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4139 goto return_prx_cond;
4140 }
4141
4142 /* parse the whole stats request and extract the relevant information */
4143 http_handle_stats(s, req);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]4144 verdict = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4145 /* not all actions implemented: deny, allow, auth */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4146
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4147 if (verdict == HTTP_RULE_RES_DENY) /* stats http-request deny */
4148 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4149
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4150 if (verdict == HTTP_RULE_RES_ABRT) /* stats auth / stats http-request auth */
4151 goto return_prx_cond;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]4152 }
4153
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4154 /* evaluate the req* rules except reqadd */
4155 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]4156 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4157 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4158
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4159 if (txn->flags & TX_CLDENY)
4160 goto deny;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]4161
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4162 if (txn->flags & TX_CLTARPIT)
4163 goto tarpit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4164 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4165
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4166 /* add request headers from the rule sets in the same order */
4167 list_for_each_entry(wl, &px->req_add, list) {
4168 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4169 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]4170 ret = acl_pass(ret);
4171 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
4172 ret = !ret;
4173 if (!ret)
4174 continue;
4175 }
4176
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4177 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4178 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]4179 }
4180
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4181
4182 /* Proceed with the stats now. */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]4183 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]4184 /* process the stats request now */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4185 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
4186 sess->fe->fe_counters.intercepted_req++;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4187
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4188 if (!(s->flags & SF_ERR_MASK)) // this is not really an error but it is
4189 s->flags |= SF_ERR_LOCAL; // to mark that it comes from the proxy
4190 if (!(s->flags & SF_FINST_MASK))
4191 s->flags |= SF_FINST_R;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4192
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4193 /* enable the minimally required analyzers to handle keep-alive and compression on the HTTP response */
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4194 req->analysers &= (AN_REQ_HTTP_BODY | AN_FLT_END);
4195 req->analysers &= ~AN_FLT_XFER_DATA;
4196 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4197 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4198 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4199
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4200 /* check whether we have some ACLs set to redirect this request */
4201 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4202 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4203 int ret;
4204
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4205 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]4206 ret = acl_pass(ret);
4207 if (rule->cond->pol == ACL_COND_UNLESS)
4208 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4209 if (!ret)
4210 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4211 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4212 if (!http_apply_redirect_rule(rule, s, txn))
4213 goto return_bad_req;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4214 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4215 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4216
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4217 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
4218 * If this happens, then the data will not come immediately, so we must
4219 * send all what we have without waiting. Note that due to the small gain
4220 * 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]4221 * 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]4222 * itself once used.
4223 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4224 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4225
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4226 done: /* done with this analyser, continue with next ones that the calling
4227 * points will have set, if any.
4228 */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4229 req->analyse_exp = TICK_ETERNITY;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4230 done_without_exp: /* done with this analyser, but dont reset the analyse_exp. */
4231 req->analysers &= ~an_bit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4232 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4233
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4234 tarpit:
4235 /* When a connection is tarpitted, we use the tarpit timeout,
4236 * which may be the same as the connect timeout if unspecified.
4237 * If unset, then set it to zero because we really want it to
4238 * eventually expire. We build the tarpit as an analyser.
4239 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4240 channel_erase(&s->req);
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4241
4242 /* wipe the request out so that we can drop the connection early
4243 * if the client closes first.
4244 */
4245 channel_dont_connect(req);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4246 req->analysers &= AN_FLT_END; /* remove switching rules etc... */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4247 req->analysers |= AN_REQ_HTTP_TARPIT;
4248 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
4249 if (!req->analyse_exp)
4250 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4251 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4252 sess->fe->fe_counters.denied_req++;
4253 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4254 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4255 if (sess->listener->counters)
4256 sess->listener->counters->denied_req++;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4257 goto done_without_exp;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4258
4259 deny: /* this request was blocked (denied) */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4260 txn->flags |= TX_CLDENY;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]4261 txn->status = http_err_codes[txn->rule_deny_status];
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4262 s->logs.tv_request = now;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4263 http_reply_and_close(s, txn->status, http_error_message(s, txn->rule_deny_status));
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4264 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4265 sess->fe->fe_counters.denied_req++;
4266 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4267 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4268 if (sess->listener->counters)
4269 sess->listener->counters->denied_req++;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4270 goto return_prx_cond;
4271
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4272 return_bad_req:
4273 /* We centralize bad requests processing here */
4274 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
4275 /* we detected a parsing error. We want to archive this request
4276 * in the dedicated proxy area for later troubleshooting.
4277 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4278 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4279 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4280
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4281 txn->req.msg_state = HTTP_MSG_ERROR;
4282 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4283 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4284
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4285 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4286 if (sess->listener->counters)
4287 sess->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4288
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4289 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4290 if (!(s->flags & SF_ERR_MASK))
4291 s->flags |= SF_ERR_PRXCOND;
4292 if (!(s->flags & SF_FINST_MASK))
4293 s->flags |= SF_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]4294
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4295 req->analysers &= AN_FLT_END;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4296 req->analyse_exp = TICK_ETERNITY;
4297 return 0;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4298
4299 return_prx_yield:
4300 channel_dont_connect(req);
4301 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4302}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4303
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4304/* This function performs all the processing enabled for the current request.
4305 * It returns 1 if the processing can continue on next analysers, or zero if it
4306 * needs more data, encounters an error, or wants to immediately abort the
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4307 * request. It relies on buffers flags, and updates s->req.analysers.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4308 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4309int http_process_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4310{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4311 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4312 struct http_txn *txn = s->txn;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4313 struct http_msg *msg = &txn->req;
Willy Tarreauee335e62015-04-21 18:15:13 +0200[diff] [blame]4314 struct connection *cli_conn = objt_conn(strm_sess(s)->origin);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4315
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4316 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4317 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4318 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4319 return 0;
4320 }
4321
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4322 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]4323 now_ms, __FUNCTION__,
4324 s,
4325 req,
4326 req->rex, req->wex,
4327 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4328 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4329 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4330
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4331 /*
4332 * Right now, we know that we have processed the entire headers
4333 * and that unwanted requests have been filtered out. We can do
4334 * whatever we want with the remaining request. Also, now we
4335 * may have separate values for ->fe, ->be.
4336 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4337
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4338 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4339 * If HTTP PROXY is set we simply get remote server address parsing
4340 * incoming request. Note that this requires that a connection is
4341 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4342 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4343 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SF_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4344 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4345 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4346
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]4347 /* Note that for now we don't reuse existing proxy connections */
Willy Tarreau973a5422015-08-05 21:47:23 +0200[diff] [blame]4348 if (unlikely((conn = si_alloc_conn(&s->si[1])) == NULL)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4349 txn->req.msg_state = HTTP_MSG_ERROR;
4350 txn->status = 500;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4351 req->analysers &= AN_FLT_END;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4352 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_500));
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4353
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4354 if (!(s->flags & SF_ERR_MASK))
4355 s->flags |= SF_ERR_RESOURCE;
4356 if (!(s->flags & SF_FINST_MASK))
4357 s->flags |= SF_FINST_R;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4358
4359 return 0;
4360 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4361
4362 path = http_get_path(txn);
4363 url2sa(req->buf->p + msg->sl.rq.u,
4364 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]4365 &conn->addr.to, NULL);
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4366 /* if the path was found, we have to remove everything between
4367 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
4368 * found, we need to replace from req->buf->p + msg->sl.rq.u for
4369 * u_l characters by a single "/".
4370 */
4371 if (path) {
4372 char *cur_ptr = req->buf->p;
4373 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4374 int delta;
4375
4376 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
4377 http_msg_move_end(&txn->req, delta);
4378 cur_end += delta;
4379 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4380 goto return_bad_req;
4381 }
4382 else {
4383 char *cur_ptr = req->buf->p;
4384 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4385 int delta;
4386
4387 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
4388 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
4389 http_msg_move_end(&txn->req, delta);
4390 cur_end += delta;
4391 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4392 goto return_bad_req;
4393 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4394 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4395
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4396 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4397 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4398 * Note that doing so might move headers in the request, but
4399 * the fields will stay coherent and the URI will not move.
4400 * This should only be performed in the backend.
4401 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]4402 if ((s->be->cookie_name || sess->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4403 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
4404 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]4405
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4406 /* add unique-id if "header-unique-id" is specified */
4407
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4408 if (!LIST_ISEMPTY(&sess->fe->format_unique_id)) {
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4409 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
4410 goto return_bad_req;
4411 s->unique_id[0] = '\0';
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4412 build_logline(s, s->unique_id, UNIQUEID_LEN, &sess->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4413 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4414
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4415 if (sess->fe->header_unique_id && s->unique_id) {
4416 chunk_printf(&trash, "%s: %s", sess->fe->header_unique_id, s->unique_id);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4417 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4418 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4419 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]4420 goto return_bad_req;
4421 }
4422
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4423 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4424 * 9: add X-Forwarded-For if either the frontend or the backend
4425 * asks for it.
4426 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4427 if ((sess->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4428 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4429 if (!((sess->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
4430 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : sess->fe->fwdfor_hdr_name,
4431 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]4432 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4433 /* The header is set to be added only if none is present
4434 * and we found it, so don't do anything.
4435 */
4436 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4437 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4438 /* Add an X-Forwarded-For header unless the source IP is
4439 * in the 'except' network range.
4440 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4441 if ((!sess->fe->except_mask.s_addr ||
4442 (((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr & sess->fe->except_mask.s_addr)
4443 != sess->fe->except_net.s_addr) &&
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4444 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4445 (((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]4446 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4447 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4448 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4449 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4450
4451 /* Note: we rely on the backend to get the header name to be used for
4452 * x-forwarded-for, because the header is really meant for the backends.
4453 * However, if the backend did not specify any option, we have to rely
4454 * on the frontend's header name.
4455 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4456 if (s->be->fwdfor_hdr_len) {
4457 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4458 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4459 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4460 len = sess->fe->fwdfor_hdr_len;
4461 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4462 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4463 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]4464
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4465 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]4466 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4467 }
4468 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4469 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4470 /* FIXME: for the sake of completeness, we should also support
4471 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4472 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4473 int len;
4474 char pn[INET6_ADDRSTRLEN];
4475 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4476 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4477 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4478
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4479 /* Note: we rely on the backend to get the header name to be used for
4480 * x-forwarded-for, because the header is really meant for the backends.
4481 * However, if the backend did not specify any option, we have to rely
4482 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4483 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4484 if (s->be->fwdfor_hdr_len) {
4485 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4486 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4487 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4488 len = sess->fe->fwdfor_hdr_len;
4489 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4490 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4491 len += snprintf(trash.str + len, trash.size - len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4492
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4493 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]4494 goto return_bad_req;
4495 }
4496 }
4497
4498 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4499 * 10: add X-Original-To if either the frontend or the backend
4500 * asks for it.
4501 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4502 if ((sess->fe->options | s->be->options) & PR_O_ORGTO) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4503
4504 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4505 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4506 /* Add an X-Original-To header unless the destination IP is
4507 * in the 'except' network range.
4508 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4509 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4510
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4511 if (cli_conn->addr.to.ss_family == AF_INET &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4512 ((!sess->fe->except_mask_to.s_addr ||
4513 (((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr.s_addr & sess->fe->except_mask_to.s_addr)
4514 != sess->fe->except_to.s_addr) &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4515 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4516 (((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]4517 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4518 int len;
4519 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4520 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4521
4522 /* Note: we rely on the backend to get the header name to be used for
4523 * x-original-to, because the header is really meant for the backends.
4524 * However, if the backend did not specify any option, we have to rely
4525 * on the frontend's header name.
4526 */
4527 if (s->be->orgto_hdr_len) {
4528 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4529 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4530 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4531 len = sess->fe->orgto_hdr_len;
4532 memcpy(trash.str, sess->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4533 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4534 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]4535
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4536 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]4537 goto return_bad_req;
4538 }
4539 }
4540 }
4541
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4542 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
4543 * If an "Upgrade" token is found, the header is left untouched in order not to have
4544 * to deal with some servers bugs : some of them fail an Upgrade if anything but
4545 * "Upgrade" is present in the Connection header.
4546 */
4547 if (!(txn->flags & TX_HDR_CONN_UPG) &&
4548 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4549 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4550 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4551 unsigned int want_flags = 0;
4552
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4553 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4554 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4555 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4556 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4557 !((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4558 want_flags |= TX_CON_CLO_SET;
4559 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4560 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4561 ((sess->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4562 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4563 ((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4564 want_flags |= TX_CON_KAL_SET;
4565 }
4566
4567 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4568 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4569 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4570
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4571
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4572 /* If we have no server assigned yet and we're balancing on url_param
4573 * with a POST request, we may be interested in checking the body for
4574 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4575 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4576 if (!(s->flags & (SF_ASSIGNED|SF_DIRECT)) &&
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4577 s->txn->meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4578 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4579 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4580 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4581 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4582
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4583 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4584 req->analysers &= ~AN_FLT_XFER_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4585 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4586#ifdef TCP_QUICKACK
4587 /* We expect some data from the client. Unless we know for sure
4588 * we already have a full request, we have to re-enable quick-ack
4589 * in case we previously disabled it, otherwise we might cause
4590 * the client to delay further data.
4591 */
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4592 if ((sess->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]4593 cli_conn && conn_ctrl_ready(cli_conn) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4594 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4595 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4596 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4597#endif
4598 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4599
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4600 /*************************************************************
4601 * OK, that's finished for the headers. We have done what we *
4602 * could. Let's switch to the DATA state. *
4603 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4604 req->analyse_exp = TICK_ETERNITY;
4605 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4606
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4607 /* if the server closes the connection, we want to immediately react
4608 * and close the socket to save packets and syscalls.
4609 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4610 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4611 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4612
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4613 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4614 /* OK let's go on with the BODY now */
4615 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4616
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4617 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4618 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4619 /* we detected a parsing error. We want to archive this request
4620 * in the dedicated proxy area for later troubleshooting.
4621 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4622 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4623 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4624
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4625 txn->req.msg_state = HTTP_MSG_ERROR;
4626 txn->status = 400;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4627 req->analysers &= AN_FLT_END;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4628 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4629
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4630 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4631 if (sess->listener->counters)
4632 sess->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4633
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4634 if (!(s->flags & SF_ERR_MASK))
4635 s->flags |= SF_ERR_PRXCOND;
4636 if (!(s->flags & SF_FINST_MASK))
4637 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4638 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4639}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4640
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4641/* This function is an analyser which processes the HTTP tarpit. It always
4642 * returns zero, at the beginning because it prevents any other processing
4643 * from occurring, and at the end because it terminates the request.
4644 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4645int http_process_tarpit(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4646{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4647 struct http_txn *txn = s->txn;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4648
4649 /* This connection is being tarpitted. The CLIENT side has
4650 * already set the connect expiration date to the right
4651 * timeout. We just have to check that the client is still
4652 * there and that the timeout has not expired.
4653 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4654 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4655 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4656 !tick_is_expired(req->analyse_exp, now_ms))
4657 return 0;
4658
4659 /* We will set the queue timer to the time spent, just for
4660 * logging purposes. We fake a 500 server error, so that the
4661 * attacker will not suspect his connection has been tarpitted.
4662 * It will not cause trouble to the logs because we can exclude
4663 * the tarpitted connections by filtering on the 'PT' status flags.
4664 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4665 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4666
4667 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4668 if (!(req->flags & CF_READ_ERROR))
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4669 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4670
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4671 req->analysers &= AN_FLT_END;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4672 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4673
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4674 if (!(s->flags & SF_ERR_MASK))
4675 s->flags |= SF_ERR_PRXCOND;
4676 if (!(s->flags & SF_FINST_MASK))
4677 s->flags |= SF_FINST_T;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4678 return 0;
4679}
4680
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4681/* This function is an analyser which waits for the HTTP request body. It waits
4682 * for either the buffer to be full, or the full advertised contents to have
4683 * reached the buffer. It must only be called after the standard HTTP request
4684 * processing has occurred, because it expects the request to be parsed and will
4685 * look for the Expect header. It may send a 100-Continue interim response. It
4686 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
4687 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
4688 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4689 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4690int http_wait_for_request_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4691{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4692 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4693 struct http_txn *txn = s->txn;
4694 struct http_msg *msg = &s->txn->req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4695
4696 /* We have to parse the HTTP request body to find any required data.
4697 * "balance url_param check_post" should have been the only way to get
4698 * into this. We were brought here after HTTP header analysis, so all
4699 * related structures are ready.
4700 */
4701
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4702 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
4703 /* This is the first call */
4704 if (msg->msg_state < HTTP_MSG_BODY)
4705 goto missing_data;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4706
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4707 if (msg->msg_state < HTTP_MSG_100_SENT) {
4708 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4709 * send an HTTP/1.1 100 Continue intermediate response.
4710 */
4711 if (msg->flags & HTTP_MSGF_VER_11) {
4712 struct hdr_ctx ctx;
4713 ctx.idx = 0;
4714 /* Expect is allowed in 1.1, look for it */
4715 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
4716 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4717 bo_inject(&s->res, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4718 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4719 }
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4720 msg->msg_state = HTTP_MSG_100_SENT;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4721 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4722
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4723 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4724 * req->buf->p still points to the beginning of the message. We
4725 * must save the body in msg->next because it survives buffer
4726 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4727 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4728 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4729
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4730 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4731 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4732 else
4733 msg->msg_state = HTTP_MSG_DATA;
4734 }
4735
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4736 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
4737 /* We're in content-length mode, we just have to wait for enough data. */
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4738 if (http_body_bytes(msg) < msg->body_len)
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4739 goto missing_data;
4740
4741 /* OK we have everything we need now */
4742 goto http_end;
4743 }
4744
4745 /* OK here we're parsing a chunked-encoded message */
4746
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4747 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4748 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4749 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4750 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4751 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4752 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4753
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4754 if (!ret)
4755 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4756 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4757 stream_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4758 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4759 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4760 msg->next += msg->sol;
4761 msg->sol = 0;
4762 msg->msg_state = msg->chunk_len ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4763 }
4764
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4765 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4766 * We have the first data byte is in msg->sov + msg->sol. We're waiting
4767 * for at least a whole chunk or the whole content length bytes after
4768 * msg->sov + msg->sol.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4769 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4770 if (msg->msg_state == HTTP_MSG_TRAILERS)
4771 goto http_end;
4772
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4773 if (http_body_bytes(msg) >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4774 goto http_end;
4775
4776 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4777 /* we get here if we need to wait for more data. If the buffer is full,
4778 * we have the maximum we can expect.
4779 */
4780 if (buffer_full(req->buf, global.tune.maxrewrite))
4781 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4782
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4783 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4784 txn->status = 408;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4785 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4786
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4787 if (!(s->flags & SF_ERR_MASK))
4788 s->flags |= SF_ERR_CLITO;
4789 if (!(s->flags & SF_FINST_MASK))
4790 s->flags |= SF_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4791 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4792 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4793
4794 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4795 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4796 /* Not enough data. We'll re-use the http-request
4797 * timeout here. Ideally, we should set the timeout
4798 * relative to the accept() date. We just set the
4799 * request timeout once at the beginning of the
4800 * request.
4801 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4802 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4803 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4804 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4805 return 0;
4806 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4807
4808 http_end:
4809 /* The situation will not evolve, so let's give up on the analysis. */
4810 s->logs.tv_request = now; /* update the request timer to reflect full request */
4811 req->analysers &= ~an_bit;
4812 req->analyse_exp = TICK_ETERNITY;
4813 return 1;
4814
4815 return_bad_req: /* let's centralize all bad requests */
4816 txn->req.msg_state = HTTP_MSG_ERROR;
4817 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4818 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4819
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4820 if (!(s->flags & SF_ERR_MASK))
4821 s->flags |= SF_ERR_PRXCOND;
4822 if (!(s->flags & SF_FINST_MASK))
4823 s->flags |= SF_FINST_R;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4824
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4825 return_err_msg:
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4826 req->analysers &= AN_FLT_END;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4827 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4828 if (sess->listener->counters)
4829 sess->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4830 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4831}
4832
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4833/* send a server's name with an outgoing request over an established connection.
4834 * Note: this function is designed to be called once the request has been scheduled
4835 * for being forwarded. This is the reason why it rewinds the buffer before
4836 * proceeding.
4837 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4838int 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]4839
4840 struct hdr_ctx ctx;
4841
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4842 char *hdr_name = be->server_id_hdr_name;
4843 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4844 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4845 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4846 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4847
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4848 ctx.idx = 0;
4849
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]4850 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4851 if (old_o) {
4852 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4853 b_rew(chn->buf, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4854 txn->req.next += old_o;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4855 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4856 }
4857
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4858 old_i = chn->buf->i;
4859 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]4860 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4861 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4862 }
4863
4864 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4865 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4866 memcpy(hdr_val, hdr_name, hdr_name_len);
4867 hdr_val += hdr_name_len;
4868 *hdr_val++ = ':';
4869 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4870 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4871 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]4872
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4873 if (old_o) {
4874 /* If this was a forwarded request, we must readjust the amount of
4875 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4876 * variations. Note that the current state is >= HTTP_MSG_BODY,
4877 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4878 */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4879 old_o += chn->buf->i - old_i;
4880 b_adv(chn->buf, old_o);
4881 txn->req.next -= old_o;
4882 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4883 }
4884
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4885 return 0;
4886}
4887
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4888/* Terminate current transaction and prepare a new one. This is very tricky
4889 * right now but it works.
4890 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4891void http_end_txn_clean_session(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4892{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4893 int prev_status = s->txn->status;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]4894 struct proxy *fe = strm_fe(s);
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]4895 struct proxy *be = s->be;
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]4896 struct connection *srv_conn;
4897 struct server *srv;
Willy Tarreau449d74a2015-08-05 17:16:33 +0200[diff] [blame]4898 unsigned int prev_flags = s->txn->flags;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4899
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4900 /* FIXME: We need a more portable way of releasing a backend's and a
4901 * server's connections. We need a safer way to reinitialize buffer
4902 * flags. We also need a more accurate method for computing per-request
4903 * data.
4904 */
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]4905 srv_conn = objt_conn(s->si[1].end);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4906
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4907 /* unless we're doing keep-alive, we want to quickly close the connection
4908 * to the server.
4909 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4910 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4911 !si_conn_ready(&s->si[1])) {
4912 s->si[1].flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
4913 si_shutr(&s->si[1]);
4914 si_shutw(&s->si[1]);
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4915 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4916
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4917 if (s->flags & SF_BE_ASSIGNED) {
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]4918 be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4919 if (unlikely(s->srv_conn))
4920 sess_change_server(s, NULL);
4921 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4922
4923 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4924 stream_process_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4925
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4926 if (s->txn->status) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4927 int n;
4928
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4929 n = s->txn->status / 100;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4930 if (n < 1 || n > 5)
4931 n = 0;
4932
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4933 if (fe->mode == PR_MODE_HTTP) {
4934 fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4935 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4936 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]4937 (be->mode == PR_MODE_HTTP)) {
4938 be->be_counters.p.http.rsp[n]++;
4939 be->be_counters.p.http.cum_req++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4940 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4941 }
4942
4943 /* don't count other requests' data */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4944 s->logs.bytes_in -= s->req.buf->i;
4945 s->logs.bytes_out -= s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4946
4947 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4948 if (!LIST_ISEMPTY(&fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4949 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4950 (!(fe->options & PR_O_NULLNOLOG) || s->req.total)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4951 s->do_log(s);
4952 }
4953
Willy Tarreaud713bcc2014-06-25 15:36:04 +0200[diff] [blame]4954 /* stop tracking content-based counters */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4955 stream_stop_content_counters(s);
4956 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +0200[diff] [blame]4957
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4958 s->logs.accept_date = date; /* user-visible date for logging */
4959 s->logs.tv_accept = now; /* corrected date for internal use */
4960 tv_zero(&s->logs.tv_request);
4961 s->logs.t_queue = -1;
4962 s->logs.t_connect = -1;
4963 s->logs.t_data = -1;
4964 s->logs.t_close = 0;
4965 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4966 s->logs.srv_queue_size = 0; /* we will get this number soon */
4967
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4968 s->logs.bytes_in = s->req.total = s->req.buf->i;
4969 s->logs.bytes_out = s->res.total = s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4970
4971 if (s->pend_pos)
4972 pendconn_free(s->pend_pos);
4973
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4974 if (objt_server(s->target)) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4975 if (s->flags & SF_CURR_SESS) {
4976 s->flags &= ~SF_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4977 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4978 }
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]4979 if (may_dequeue_tasks(objt_server(s->target), be))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4980 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4981 }
4982
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4983 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4984
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4985 /* only release our endpoint if we don't intend to reuse the
4986 * connection.
4987 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4988 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4989 !si_conn_ready(&s->si[1])) {
4990 si_release_endpoint(&s->si[1]);
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]4991 srv_conn = NULL;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4992 }
4993
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4994 s->si[1].state = s->si[1].prev_state = SI_ST_INI;
4995 s->si[1].err_type = SI_ET_NONE;
4996 s->si[1].conn_retries = 0; /* used for logging too */
4997 s->si[1].exp = TICK_ETERNITY;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4998 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]4999 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);
5000 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]5001 s->flags &= ~(SF_DIRECT|SF_ASSIGNED|SF_ADDR_SET|SF_BE_ASSIGNED|SF_FORCE_PRST|SF_IGNORE_PRST);
5002 s->flags &= ~(SF_CURR_SESS|SF_REDIRECTABLE|SF_SRV_REUSED);
5003 s->flags &= ~(SF_ERR_MASK|SF_FINST_MASK|SF_REDISP);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]5004
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5005 s->txn->meth = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5006 http_reset_txn(s);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5007 s->txn->flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5008
5009 if (prev_status == 401 || prev_status == 407) {
5010 /* In HTTP keep-alive mode, if we receive a 401, we still have
5011 * a chance of being able to send the visitor again to the same
5012 * server over the same connection. This is required by some
5013 * broken protocols such as NTLM, and anyway whenever there is
5014 * an opportunity for sending the challenge to the proper place,
5015 * it's better to do it (at least it helps with debugging).
5016 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5017 s->txn->flags |= TX_PREFER_LAST;
Willy Tarreaubd99d582015-09-02 10:40:43 +0200[diff] [blame]5018 if (srv_conn)
5019 srv_conn->flags |= CO_FL_PRIVATE;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5020 }
5021
Willy Tarreau53f96852016-02-02 18:50:47 +0100[diff] [blame]5022 /* Never ever allow to reuse a connection from a non-reuse backend */
5023 if (srv_conn && (be->options & PR_O_REUSE_MASK) == PR_O_REUSE_NEVR)
5024 srv_conn->flags |= CO_FL_PRIVATE;
5025
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5026 if (fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5027 s->si[1].flags |= SI_FL_INDEP_STR;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5028
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5029 if (fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5030 s->req.flags |= CF_NEVER_WAIT;
5031 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]5032 }
5033
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5034 /* if the request buffer is not empty, it means we're
5035 * about to process another request, so send pending
5036 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5037 * Just don't do this if the buffer is close to be full,
5038 * because the request will wait for it to flush a little
5039 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5040 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5041 if (s->req.buf->i) {
5042 if (s->res.buf->o &&
5043 !buffer_full(s->res.buf, global.tune.maxrewrite) &&
5044 bi_end(s->res.buf) <= s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)
5045 s->res.flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5046 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5047
Willy Tarreau714ea782015-11-25 20:11:11 +0100[diff] [blame]5048 /* we're removing the analysers, we MUST re-enable events detection.
5049 * We don't enable close on the response channel since it's either
5050 * already closed, or in keep-alive with an idle connection handler.
5051 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5052 channel_auto_read(&s->req);
5053 channel_auto_close(&s->req);
5054 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5055
Willy Tarreau1c59bd52015-11-02 20:20:11 +0100[diff] [blame]5056 /* we're in keep-alive with an idle connection, monitor it if not already done */
5057 if (srv_conn && LIST_ISEMPTY(&srv_conn->list)) {
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5058 srv = objt_server(srv_conn->target);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5059 if (!srv)
5060 si_idle_conn(&s->si[1], NULL);
Willy Tarreau53f96852016-02-02 18:50:47 +0100[diff] [blame]5061 else if (srv_conn->flags & CO_FL_PRIVATE)
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5062 si_idle_conn(&s->si[1], &srv->priv_conns);
Willy Tarreau449d74a2015-08-05 17:16:33 +0200[diff] [blame]5063 else if (prev_flags & TX_NOT_FIRST)
5064 /* note: we check the request, not the connection, but
5065 * this is valid for strategies SAFE and AGGR, and in
5066 * case of ALWS, we don't care anyway.
5067 */
5068 si_idle_conn(&s->si[1], &srv->safe_conns);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5069 else
5070 si_idle_conn(&s->si[1], &srv->idle_conns);
Willy Tarreau4320eaa2015-08-05 11:08:30 +0200[diff] [blame]5071 }
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]5072
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5073 if (HAS_FILTERS(s)) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5074 s->req.analysers &= AN_FLT_END;
5075 s->res.analysers &= AN_FLT_END;
5076 }
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5077 else {
5078 s->req.analysers = strm_li(s) ? strm_li(s)->analysers : 0;
5079 s->res.analysers = 0;
5080 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5081}
5082
5083
5084/* This function updates the request state machine according to the response
5085 * state machine and buffer flags. It returns 1 if it changes anything (flag
5086 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5087 * it is only used to find when a request/response couple is complete. Both
5088 * this function and its equivalent should loop until both return zero. It
5089 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5090 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5091int http_sync_req_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5092{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5093 struct channel *chn = &s->req;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5094 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5095 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5096 unsigned int old_state = txn->req.msg_state;
5097
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5098 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
5099 return 0;
5100
5101 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5102 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5103 * We can shut the read side unless we want to abort_on_close,
5104 * or we have a POST request. The issue with POST requests is
5105 * that some browsers still send a CRLF after the request, and
5106 * this CRLF must be read so that it does not remain in the kernel
5107 * buffers, otherwise a close could cause an RST on some systems
5108 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5109 * Note that if we're using keep-alive on the client side, we'd
5110 * rather poll now and keep the polling enabled for the whole
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5111 * stream's life than enabling/disabling it between each
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5112 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5113 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5114 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5115 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5116 !(s->be->options & PR_O_ABRT_CLOSE) &&
5117 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5118 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5119
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5120 /* if the server closes the connection, we want to immediately react
5121 * and close the socket to save packets and syscalls.
5122 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5123 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5124
Willy Tarreau7f876a12015-11-18 11:59:55 +0100[diff] [blame]5125 /* In any case we've finished parsing the request so we must
5126 * disable Nagle when sending data because 1) we're not going
5127 * to shut this side, and 2) the server is waiting for us to
5128 * send pending data.
5129 */
5130 chn->flags |= CF_NEVER_WAIT;
5131
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5132 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
5133 goto wait_other_side;
5134
5135 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
5136 /* The server has not finished to respond, so we
5137 * don't want to move in order not to upset it.
5138 */
5139 goto wait_other_side;
5140 }
5141
5142 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
5143 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5144 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5145 txn->req.msg_state = HTTP_MSG_TUNNEL;
5146 goto wait_other_side;
5147 }
5148
5149 /* When we get here, it means that both the request and the
5150 * response have finished receiving. Depending on the connection
5151 * mode, we'll have to wait for the last bytes to leave in either
5152 * direction, and sometimes for a close to be effective.
5153 */
5154
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5155 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5156 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5157 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
5158 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5159 }
5160 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5161 /* Option forceclose is set, or either side wants to close,
5162 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5163 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5164 * once both states are CLOSED.
5165 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5166 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5167 channel_shutr_now(chn);
5168 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5169 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5170 }
5171 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5172 /* The last possible modes are keep-alive and tunnel. Tunnel mode
5173 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5174 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5175 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
5176 channel_auto_read(chn);
5177 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5178 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5179 }
5180
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5181 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5182 /* if we've just closed an output, let's switch */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5183 s->si[1].flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5184
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5185 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5186 txn->req.msg_state = HTTP_MSG_CLOSING;
5187 goto http_msg_closing;
5188 }
5189 else {
5190 txn->req.msg_state = HTTP_MSG_CLOSED;
5191 goto http_msg_closed;
5192 }
5193 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5194 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5195 }
5196
5197 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
5198 http_msg_closing:
5199 /* nothing else to forward, just waiting for the output buffer
5200 * to be empty and for the shutw_now to take effect.
5201 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5202 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5203 txn->req.msg_state = HTTP_MSG_CLOSED;
5204 goto http_msg_closed;
5205 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5206 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5207 txn->req.msg_state = HTTP_MSG_ERROR;
5208 goto wait_other_side;
5209 }
5210 }
5211
5212 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
5213 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5214 /* see above in MSG_DONE why we only do this in these states */
5215 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5216 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5217 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]5218 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5219 goto wait_other_side;
5220 }
5221
5222 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5223 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5224}
5225
5226
5227/* This function updates the response state machine according to the request
5228 * state machine and buffer flags. It returns 1 if it changes anything (flag
5229 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5230 * it is only used to find when a request/response couple is complete. Both
5231 * this function and its equivalent should loop until both return zero. It
5232 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5233 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5234int http_sync_res_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5235{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5236 struct channel *chn = &s->res;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5237 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5238 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5239 unsigned int old_state = txn->rsp.msg_state;
5240
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5241 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
5242 return 0;
5243
5244 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
5245 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5246 * still monitor the server connection for a possible close
5247 * while the request is being uploaded, so we don't disable
5248 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5249 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5250 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5251
5252 if (txn->req.msg_state == HTTP_MSG_ERROR)
5253 goto wait_other_side;
5254
5255 if (txn->req.msg_state < HTTP_MSG_DONE) {
5256 /* The client seems to still be sending data, probably
5257 * because we got an error response during an upload.
5258 * We have the choice of either breaking the connection
5259 * or letting it pass through. Let's do the later.
5260 */
5261 goto wait_other_side;
5262 }
5263
5264 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
5265 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5266 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5267 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5268 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5269 goto wait_other_side;
5270 }
5271
5272 /* When we get here, it means that both the request and the
5273 * response have finished receiving. Depending on the connection
5274 * mode, we'll have to wait for the last bytes to leave in either
5275 * direction, and sometimes for a close to be effective.
5276 */
5277
5278 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5279 /* Server-close mode : shut read and wait for the request
5280 * side to close its output buffer. The caller will detect
5281 * when we're in DONE and the other is in CLOSED and will
5282 * catch that for the final cleanup.
5283 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5284 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
5285 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5286 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5287 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5288 /* Option forceclose is set, or either side wants to close,
5289 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5290 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5291 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5292 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5293 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5294 channel_shutr_now(chn);
5295 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5296 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5297 }
5298 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5299 /* The last possible modes are keep-alive and tunnel. Tunnel will
5300 * need to forward remaining data. Keep-alive will need to monitor
5301 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5302 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5303 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5304 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5305 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
5306 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5307 }
5308
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5309 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5310 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5311 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5312 txn->rsp.msg_state = HTTP_MSG_CLOSING;
5313 goto http_msg_closing;
5314 }
5315 else {
5316 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5317 goto http_msg_closed;
5318 }
5319 }
5320 goto wait_other_side;
5321 }
5322
5323 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
5324 http_msg_closing:
5325 /* nothing else to forward, just waiting for the output buffer
5326 * to be empty and for the shutw_now to take effect.
5327 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5328 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5329 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5330 goto http_msg_closed;
5331 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5332 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5333 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5334 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5335 if (objt_server(s->target))
5336 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5337 goto wait_other_side;
5338 }
5339 }
5340
5341 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
5342 http_msg_closed:
5343 /* drop any pending data */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5344 channel_truncate(chn);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5345 channel_auto_close(chn);
5346 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5347 goto wait_other_side;
5348 }
5349
5350 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5351 /* We force the response to leave immediately if we're waiting for the
5352 * other side, since there is no pending shutdown to push it out.
5353 */
5354 if (!channel_is_empty(chn))
5355 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5356 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5357}
5358
5359
5360/* Resync the request and response state machines. Return 1 if either state
5361 * changes.
5362 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5363int http_resync_states(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5364{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5365 struct http_txn *txn = s->txn;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5366 int old_req_state = txn->req.msg_state;
5367 int old_res_state = txn->rsp.msg_state;
5368
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5369 http_sync_req_state(s);
5370 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5371 if (!http_sync_res_state(s))
5372 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5373 if (!http_sync_req_state(s))
5374 break;
5375 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]5376
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5377 /* OK, both state machines agree on a compatible state.
5378 * There are a few cases we're interested in :
5379 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
5380 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
5381 * directions, so let's simply disable both analysers.
5382 * - HTTP_MSG_CLOSED on the response only means we must abort the
5383 * request.
5384 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
5385 * with server-close mode means we've completed one request and we
5386 * must re-initialize the server connection.
5387 */
5388
5389 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
5390 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
5391 (txn->req.msg_state == HTTP_MSG_CLOSED &&
5392 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5393 s->req.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5394 channel_auto_close(&s->req);
5395 channel_auto_read(&s->req);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5396 s->res.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5397 channel_auto_close(&s->res);
5398 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5399 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5400 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5401 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->res.flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]5402 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5403 txn->req.msg_state == HTTP_MSG_ERROR) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5404 s->res.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5405 channel_auto_close(&s->res);
5406 channel_auto_read(&s->res);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5407 s->req.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5408 channel_abort(&s->req);
5409 channel_auto_close(&s->req);
5410 channel_auto_read(&s->req);
5411 channel_truncate(&s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5412 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5413 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
5414 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5415 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5416 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
5417 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
5418 /* server-close/keep-alive: terminate this transaction,
5419 * possibly killing the server connection and reinitialize
5420 * a fresh-new transaction.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5421 */
5422 http_end_txn_clean_session(s);
5423 }
5424
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5425 return txn->req.msg_state != old_req_state ||
5426 txn->rsp.msg_state != old_res_state;
5427}
5428
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5429/* This function is an analyser which forwards request body (including chunk
5430 * sizes if any). It is called as soon as we must forward, even if we forward
5431 * zero byte. The only situation where it must not be called is when we're in
5432 * tunnel mode and we want to forward till the close. It's used both to forward
5433 * remaining data and to resync after end of body. It expects the msg_state to
5434 * 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]5435 * 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]5436 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5437 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5438 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5439int http_request_forward_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5440{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5441 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5442 struct http_txn *txn = s->txn;
5443 struct http_msg *msg = &s->txn->req;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5444 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5445
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5446 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5447 return 0;
5448
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5449 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]5450 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5451 /* Output closed while we were sending data. We must abort and
5452 * wake the other side up.
5453 */
5454 msg->msg_state = HTTP_MSG_ERROR;
5455 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5456 return 1;
5457 }
5458
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5459 /* Note that we don't have to send 100-continue back because we don't
5460 * need the data to complete our job, and it's up to the server to
5461 * decide whether to return 100, 417 or anything else in return of
5462 * an "Expect: 100-continue" header.
5463 */
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5464 if (msg->msg_state == HTTP_MSG_BODY) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5465 /* we have msg->sov which points to the first byte of message
5466 * body, and req->buf.p still points to the beginning of the
5467 * message. We forward the headers now, as we don't need them
5468 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5469 */
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5470 FLT_STRM_CB(s, flt_http_headers(s, msg),
5471 /* default_ret */ 1,
5472 /* on_error */ goto return_bad_req,
5473 /* on_wait */ return 0);
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5474
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5475 /* The previous analysers guarantee that the state is somewhere
5476 * between MSG_BODY and the first MSG_DATA. So msg->sol and
5477 * msg->next are always correct.
5478 */
5479 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
5480 if (msg->flags & HTTP_MSGF_TE_CHNK)
5481 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
5482 else
5483 msg->msg_state = HTTP_MSG_DATA;
5484 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5485
5486 /* TODO/filters: when http-buffer-request option is set or if a
5487 * rule on url_param exists, the first chunk size could be
5488 * already parsed. In that case, msg->next is after the chunk
5489 * size (including the CRLF after the size). So this case should
5490 * be handled to */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5491 }
5492
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5493 /* Some post-connect processing might want us to refrain from starting to
5494 * forward data. Currently, the only reason for this is "balance url_param"
5495 * whichs need to parse/process the request after we've enabled forwarding.
5496 */
5497 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5498 if (!(s->res.flags & CF_READ_ATTACHED)) {
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5499 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +0200[diff] [blame]5500 req->flags |= CF_WAKE_CONNECT;
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5501 goto missing_data;
5502 }
5503 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5504 }
5505
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5506 /* in most states, we should abort in case of early close */
5507 channel_auto_close(req);
5508
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5509 if (req->to_forward) {
5510 /* We can't process the buffer's contents yet */
5511 req->flags |= CF_WAKE_WRITE;
5512 goto missing_data;
5513 }
5514
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5515 while (1) {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5516 if (msg->msg_state == HTTP_MSG_DATA) {
5517 /* must still forward */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5518 /* we may have some pending data starting at req->buf->p */
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5519 ret = FLT_STRM_CB(s, flt_http_data(s, msg),
5520 /* default_ret */ MIN(msg->chunk_len, req->buf->i - msg->next),
5521 /* on_error */ goto aborted_xfer);
5522 msg->next += ret;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5523 msg->chunk_len -= ret;
5524
5525 if (msg->chunk_len) {
5526 /* input empty or output full */
5527 if (req->buf->i > msg->next)
5528 req->flags |= CF_WAKE_WRITE;
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5529 goto missing_data;
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5530 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5531
5532 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5533 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5534 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5535 else
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5536 msg->msg_state = HTTP_MSG_ENDING;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5537 }
5538 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5539 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5540 * set ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5541 * TRAILERS state.
5542 */
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame^]5543 ret = http_parse_chunk_size(msg);
5544 if (ret == 0)
5545 goto missing_data;
5546 else if (ret < 0) {
5547 stream_inc_http_err_ctr(s);
5548 if (msg->err_pos >= 0)
5549 http_capture_bad_message(&sess->fe->invalid_req, s, msg, HTTP_MSG_CHUNK_SIZE, s->be);
5550 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5551 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5552 msg->next += msg->sol;
5553 msg->sol = 0;
5554 msg->msg_state = msg->chunk_len ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5555 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5556 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5557 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5558 /* we want the CRLF after the data */
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame^]5559 ret = http_skip_chunk_crlf(msg);
5560 if (ret == 0)
5561 goto missing_data;
5562 else if (ret < 0) {
5563 stream_inc_http_err_ctr(s);
5564 if (msg->err_pos >= 0)
5565 http_capture_bad_message(&sess->fe->invalid_req, s, msg, HTTP_MSG_CHUNK_CRLF, s->be);
5566 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5567 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5568 msg->next += msg->sol;
5569 msg->sol = 0;
5570 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5571 /* we're in MSG_CHUNK_SIZE now */
5572 }
5573 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame^]5574 ret = http_forward_trailers(msg);
5575 if (ret < 0) {
5576 stream_inc_http_err_ctr(s);
5577 if (msg->err_pos >= 0)
5578 http_capture_bad_message(&sess->fe->invalid_req, s, msg, HTTP_MSG_TRAILERS, s->be);
5579 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5580 }
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5581 FLT_STRM_CB(s, flt_http_chunk_trailers(s, msg),
5582 /* default_ret */ 1,
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame^]5583 /* on_error */ goto return_bad_req);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5584 msg->next += msg->sol;
5585 msg->sol = 0;
5586 if (!ret)
5587 goto missing_data;
5588 msg->msg_state = HTTP_MSG_ENDING;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5589 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5590 else if (msg->msg_state == HTTP_MSG_ENDING) {
5591 /* we don't want to forward closes on DONE except in
5592 * tunnel mode.
5593 */
5594 if ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5595 channel_dont_close(req);
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5596 /* we may have some pending data starting at req->buf->p
5597 * such as last chunk of data or trailers.
5598 */
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5599 ret = FLT_STRM_CB(s, flt_http_forward_data(s, msg, msg->next),
5600 /* default_ret */ msg->next,
5601 /* on_error */ goto return_bad_req);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5602 b_adv(req->buf, ret);
5603 msg->next -= ret;
5604 if (unlikely(!(s->req.flags & CF_WROTE_DATA) || msg->sov > 0))
5605 msg->sov -= ret;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5606 if (msg->next)
5607 goto skip_resync_states;
5608
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5609 FLT_STRM_CB(s, flt_http_end(s, msg),
5610 /* default_ret */ 1,
5611 /* on_error */ goto return_bad_req,
5612 /* on_wait */ goto skip_resync_states);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5613 msg->msg_state = HTTP_MSG_DONE;
5614 }
5615 else {
5616 /* other states, DONE...TUNNEL */
Willy Tarreaubbfb6c42015-05-11 18:30:33 +0200[diff] [blame]5617 /* we don't want to forward closes on DONE except in
5618 * tunnel mode.
5619 */
5620 if ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5621 channel_dont_close(req);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5622
5623 ret = msg->msg_state;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5624 if (http_resync_states(s)) {
5625 /* some state changes occurred, maybe the analyser
5626 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]5627 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5628 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5629 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5630 /* request errors are most likely due to
5631 * the server aborting the transfer.
5632 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5633 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5634 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5635 if (msg->err_pos >= 0)
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5636 http_capture_bad_message(&sess->fe->invalid_req, s, msg, ret, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5637 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5638 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5639 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5640 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5641
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5642 skip_resync_states:
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5643 /* If "option abortonclose" is set on the backend, we
5644 * want to monitor the client's connection and forward
5645 * any shutdown notification to the server, which will
5646 * decide whether to close or to go on processing the
Willy Tarreaubbfb6c42015-05-11 18:30:33 +0200[diff] [blame]5647 * request. We only do that in tunnel mode, and not in
5648 * other modes since it can be abused to exhaust source
5649 * ports.
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5650 */
5651 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5652 channel_auto_read(req);
Willy Tarreaubbfb6c42015-05-11 18:30:33 +0200[diff] [blame]5653 if ((req->flags & (CF_SHUTR|CF_READ_NULL)) &&
5654 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN))
5655 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5656 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5657 }
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5658 else if (s->txn->meth == HTTP_METH_POST) {
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5659 /* POST requests may require to read extra CRLF
5660 * sent by broken browsers and which could cause
5661 * an RST to be sent upon close on some systems
5662 * (eg: Linux).
5663 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5664 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5665 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5666
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5667 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5668 }
5669 }
5670
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5671 missing_data:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5672 /* we may have some pending data starting at req->buf->p */
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5673 ret = FLT_STRM_CB(s, flt_http_forward_data(s, msg, msg->next),
5674 /* default_ret */ msg->next,
5675 /* on_error */ goto return_bad_req);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5676 b_adv(req->buf, ret);
5677 msg->next -= ret;
5678 if (unlikely(!(s->req.flags & CF_WROTE_DATA) || msg->sov > 0))
5679 msg->sov -= ret;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5680 if (!HAS_FILTERS(s))
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5681 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5682
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5683 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5684 if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5685 if (!(s->flags & SF_ERR_MASK))
5686 s->flags |= SF_ERR_CLICL;
5687 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5688 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5689 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5690 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5691 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5692 }
5693
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5694 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5695 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5696 if (objt_server(s->target))
5697 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5698
5699 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5700 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5701
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5702 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5703 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5704 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5705
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5706 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5707 * 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]5708 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5709 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5710 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5711
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5712 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5713 * 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]5714 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5715 * modes are already handled by the stream sock layer. We must not do
5716 * this in content-length mode because it could present the MSG_MORE
5717 * flag with the last block of forwarded data, which would cause an
5718 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5719 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5720 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5721 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5722
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5723 return 0;
5724
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5725 return_bad_req: /* let's centralize all bad requests */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5726 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5727 if (sess->listener->counters)
5728 sess->listener->counters->failed_req++;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5729
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5730 return_bad_req_stats_ok:
5731 txn->req.msg_state = HTTP_MSG_ERROR;
5732 if (txn->status) {
5733 /* Note: we don't send any error if some data were already sent */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5734 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5735 } else {
5736 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5737 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5738 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5739 req->analysers &= AN_FLT_END;
5740 s->res.analysers &= AN_FLT_END; /* we're in data phase, we want to abort both directions */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5741
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5742 if (!(s->flags & SF_ERR_MASK))
5743 s->flags |= SF_ERR_PRXCOND;
5744 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5745 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5746 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5747 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5748 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5749 }
5750 return 0;
5751
5752 aborted_xfer:
5753 txn->req.msg_state = HTTP_MSG_ERROR;
5754 if (txn->status) {
5755 /* Note: we don't send any error if some data were already sent */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5756 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5757 } else {
5758 txn->status = 502;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5759 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5760 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5761 req->analysers &= AN_FLT_END;
5762 s->res.analysers &= AN_FLT_END; /* we're in data phase, we want to abort both directions */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5763
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5764 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5765 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5766 if (objt_server(s->target))
5767 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5768
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5769 if (!(s->flags & SF_ERR_MASK))
5770 s->flags |= SF_ERR_SRVCL;
5771 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5772 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5773 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5774 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5775 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5776 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5777 return 0;
5778}
5779
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5780/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5781 * processing can continue on next analysers, or zero if it either needs more
5782 * data or wants to immediately abort the response (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5783 * 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]5784 * when it has nothing left to do, and may remove any analyser when it wants to
5785 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5786 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5787int http_wait_for_response(struct stream *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5788{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5789 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5790 struct http_txn *txn = s->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5791 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5792 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5793 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5794 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5795 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5796
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5797 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]5798 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5799 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5800 rep,
5801 rep->rex, rep->wex,
5802 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5803 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5804 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5805
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5806 /*
5807 * Now parse the partial (or complete) lines.
5808 * We will check the response syntax, and also join multi-line
5809 * headers. An index of all the lines will be elaborated while
5810 * parsing.
5811 *
5812 * For the parsing, we use a 28 states FSM.
5813 *
5814 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5815 * rep->buf->p = beginning of response
5816 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5817 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5818 * msg->eol = end of current header or line (LF or CRLF)
5819 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5820 */
5821
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5822 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5823 /* There's a protected area at the end of the buffer for rewriting
5824 * purposes. We don't want to start to parse the request if the
5825 * protected area is affected, because we may have to move processed
5826 * data later, which is much more complicated.
5827 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5828 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]5829 if (unlikely(!channel_is_rewritable(rep))) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5830 /* some data has still not left the buffer, wake us once that's done */
5831 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5832 goto abort_response;
5833 channel_dont_close(rep);
5834 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5835 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5836 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5837 }
5838
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5839 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5840 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5841 buffer_slow_realign(rep->buf);
5842
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5843 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5844 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5845 }
5846
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5847 /* 1: we might have to print this header in debug mode */
5848 if (unlikely((global.mode & MODE_DEBUG) &&
5849 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]5850 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5851 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5852
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5853 sol = rep->buf->p;
5854 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5855 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5856
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5857 sol += hdr_idx_first_pos(&txn->hdr_idx);
5858 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5859
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5860 while (cur_idx) {
5861 eol = sol + txn->hdr_idx.v[cur_idx].len;
5862 debug_hdr("srvhdr", s, sol, eol);
5863 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5864 cur_idx = txn->hdr_idx.v[cur_idx].next;
5865 }
5866 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5867
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5868 /*
5869 * Now we quickly check if we have found a full valid response.
5870 * If not so, we check the FD and buffer states before leaving.
5871 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5872 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5873 * responses are checked first.
5874 *
5875 * Depending on whether the client is still there or not, we
5876 * may send an error response back or not. Note that normally
5877 * we should only check for HTTP status there, and check I/O
5878 * errors somewhere else.
5879 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5880
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5881 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5882 /* Invalid response */
5883 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5884 /* we detected a parsing error. We want to archive this response
5885 * in the dedicated proxy area for later troubleshooting.
5886 */
5887 hdr_response_bad:
5888 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5889 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, sess->fe);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5890
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5891 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5892 if (objt_server(s->target)) {
5893 objt_server(s->target)->counters.failed_resp++;
5894 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5895 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5896 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5897 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5898 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5899 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5900 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5901 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5902 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5903
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5904 if (!(s->flags & SF_ERR_MASK))
5905 s->flags |= SF_ERR_PRXCOND;
5906 if (!(s->flags & SF_FINST_MASK))
5907 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5908
5909 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5910 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5911
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5912 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5913 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5914 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5915 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5916 goto hdr_response_bad;
5917 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5918
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5919 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5920 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5921 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5922 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, sess->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5923 else if (txn->flags & TX_NOT_FIRST)
5924 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5925
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5926 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5927 if (objt_server(s->target)) {
5928 objt_server(s->target)->counters.failed_resp++;
5929 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5930 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5931
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5932 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5933 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5934 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5935 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5936 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5937 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5938
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5939 if (!(s->flags & SF_ERR_MASK))
5940 s->flags |= SF_ERR_SRVCL;
5941 if (!(s->flags & SF_FINST_MASK))
5942 s->flags |= SF_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5943 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5944 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5945
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +0200[diff] [blame]5946 /* read timeout : return a 504 to the client. */
5947 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5948 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5949 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, sess->fe);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5950
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5951 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5952 if (objt_server(s->target)) {
5953 objt_server(s->target)->counters.failed_resp++;
5954 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5955 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5956
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5957 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5958 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5959 txn->status = 504;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5960 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5961 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5962 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5963
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5964 if (!(s->flags & SF_ERR_MASK))
5965 s->flags |= SF_ERR_SRVTO;
5966 if (!(s->flags & SF_FINST_MASK))
5967 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5968 return 0;
5969 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5970
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5971 /* client abort with an abortonclose */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5972 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]5973 sess->fe->fe_counters.cli_aborts++;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5974 s->be->be_counters.cli_aborts++;
5975 if (objt_server(s->target))
5976 objt_server(s->target)->counters.cli_aborts++;
5977
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5978 rep->analysers &= AN_FLT_END;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5979 channel_auto_close(rep);
5980
5981 txn->status = 400;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5982 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5983 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5984
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5985 if (!(s->flags & SF_ERR_MASK))
5986 s->flags |= SF_ERR_CLICL;
5987 if (!(s->flags & SF_FINST_MASK))
5988 s->flags |= SF_FINST_H;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5989
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5990 /* process_stream() will take care of the error */
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5991 return 0;
5992 }
5993
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5994 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5995 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5996 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5997 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, sess->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5998 else if (txn->flags & TX_NOT_FIRST)
5999 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6000
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6001 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6002 if (objt_server(s->target)) {
6003 objt_server(s->target)->counters.failed_resp++;
6004 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6005 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6006
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6007 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6008 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6009 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6010 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6011 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6012 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6013
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6014 if (!(s->flags & SF_ERR_MASK))
6015 s->flags |= SF_ERR_SRVCL;
6016 if (!(s->flags & SF_FINST_MASK))
6017 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6018 return 0;
6019 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]6020
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6021 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6022 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6023 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6024 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, sess->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]6025 else if (txn->flags & TX_NOT_FIRST)
6026 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]6027
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6028 s->be->be_counters.failed_resp++;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6029 rep->analysers &= AN_FLT_END;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6030 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6031
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6032 if (!(s->flags & SF_ERR_MASK))
6033 s->flags |= SF_ERR_CLICL;
6034 if (!(s->flags & SF_FINST_MASK))
6035 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6036
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6037 /* process_stream() will take care of the error */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6038 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6039 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6040
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6041 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]6042 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6043 return 0;
6044 }
6045
6046 /* More interesting part now : we know that we have a complete
6047 * response which at least looks like HTTP. We have an indicator
6048 * of each header's length, so we can parse them quickly.
6049 */
6050
6051 if (unlikely(msg->err_pos >= 0))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6052 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, sess->fe);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6053
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6054 /*
6055 * 1: get the status code
6056 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6057 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6058 if (n < 1 || n > 5)
6059 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6060 /* when the client triggers a 4xx from the server, it's most often due
6061 * to a missing object or permission. These events should be tracked
6062 * because if they happen often, it may indicate a brute force or a
6063 * vulnerability scan.
6064 */
6065 if (n == 4)
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6066 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6067
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6068 if (objt_server(s->target))
6069 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6070
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]6071 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
6072 * exactly one digit "." one digit. This check may be disabled using
6073 * option accept-invalid-http-response.
6074 */
6075 if (!(s->be->options2 & PR_O2_RSPBUG_OK)) {
6076 if (msg->sl.st.v_l != 8) {
6077 msg->err_pos = 0;
6078 goto hdr_response_bad;
6079 }
6080
6081 if (rep->buf->p[4] != '/' ||
6082 !isdigit((unsigned char)rep->buf->p[5]) ||
6083 rep->buf->p[6] != '.' ||
6084 !isdigit((unsigned char)rep->buf->p[7])) {
6085 msg->err_pos = 4;
6086 goto hdr_response_bad;
6087 }
6088 }
6089
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6090 /* check if the response is HTTP/1.1 or above */
6091 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6092 ((rep->buf->p[5] > '1') ||
6093 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6094 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6095
6096 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]6097 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]6098
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6099 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6100 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6101
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6102 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]6103
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]6104 /* Adjust server's health based on status code. Note: status codes 501
6105 * and 505 are triggered on demand by client request, so we must not
6106 * count them as server failures.
6107 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6108 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6109 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6110 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6111 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6112 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6113 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6114
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6115 /*
6116 * 2: check for cacheability.
6117 */
6118
6119 switch (txn->status) {
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]6120 case 100:
6121 /*
6122 * We may be facing a 100-continue response, in which case this
6123 * is not the right response, and we're waiting for the next one.
6124 * Let's allow this response to go to the client and wait for the
6125 * next one.
6126 */
6127 hdr_idx_init(&txn->hdr_idx);
6128 msg->next -= channel_forward(rep, msg->next);
6129 msg->msg_state = HTTP_MSG_RPBEFORE;
6130 txn->status = 0;
6131 s->logs.t_data = -1; /* was not a response yet */
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6132 FLT_STRM_CB(s, flt_http_reset(s, msg));
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]6133 goto next_one;
6134
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6135 case 200:
6136 case 203:
6137 case 206:
6138 case 300:
6139 case 301:
6140 case 410:
6141 /* RFC2616 @13.4:
6142 * "A response received with a status code of
6143 * 200, 203, 206, 300, 301 or 410 MAY be stored
6144 * by a cache (...) unless a cache-control
6145 * directive prohibits caching."
6146 *
6147 * RFC2616 @9.5: POST method :
6148 * "Responses to this method are not cacheable,
6149 * unless the response includes appropriate
6150 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6151 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6152 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6153 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6154 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
6155 break;
6156 default:
6157 break;
6158 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6159
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6160 /*
6161 * 3: we may need to capture headers
6162 */
6163 s->logs.logwait &= ~LW_RESP;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6164 if (unlikely((s->logs.logwait & LW_RSPHDR) && s->res_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6165 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6166 s->res_cap, sess->fe->rsp_cap);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6167
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6168 /* 4: determine the transfer-length according to RFC2616 #4.4, updated
6169 * by RFC7230#3.3.3 :
6170 *
6171 * The length of a message body is determined by one of the following
6172 * (in order of precedence):
6173 *
6174 * 1. Any response to a HEAD request and any response with a 1xx
6175 * (Informational), 204 (No Content), or 304 (Not Modified) status
6176 * code is always terminated by the first empty line after the
6177 * header fields, regardless of the header fields present in the
6178 * message, and thus cannot contain a message body.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6179 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6180 * 2. Any 2xx (Successful) response to a CONNECT request implies that
6181 * the connection will become a tunnel immediately after the empty
6182 * line that concludes the header fields. A client MUST ignore any
6183 * Content-Length or Transfer-Encoding header fields received in
6184 * such a message.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6185 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6186 * 3. If a Transfer-Encoding header field is present and the chunked
6187 * transfer coding (Section 4.1) is the final encoding, the message
6188 * body length is determined by reading and decoding the chunked
6189 * data until the transfer coding indicates the data is complete.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6190 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6191 * If a Transfer-Encoding header field is present in a response and
6192 * the chunked transfer coding is not the final encoding, the
6193 * message body length is determined by reading the connection until
6194 * it is closed by the server. If a Transfer-Encoding header field
6195 * is present in a request and the chunked transfer coding is not
6196 * the final encoding, the message body length cannot be determined
6197 * reliably; the server MUST respond with the 400 (Bad Request)
6198 * status code and then close the connection.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6199 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6200 * If a message is received with both a Transfer-Encoding and a
6201 * Content-Length header field, the Transfer-Encoding overrides the
6202 * Content-Length. Such a message might indicate an attempt to
6203 * perform request smuggling (Section 9.5) or response splitting
6204 * (Section 9.4) and ought to be handled as an error. A sender MUST
6205 * remove the received Content-Length field prior to forwarding such
6206 * a message downstream.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6207 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6208 * 4. If a message is received without Transfer-Encoding and with
6209 * either multiple Content-Length header fields having differing
6210 * field-values or a single Content-Length header field having an
6211 * invalid value, then the message framing is invalid and the
6212 * recipient MUST treat it as an unrecoverable error. If this is a
6213 * request message, the server MUST respond with a 400 (Bad Request)
6214 * status code and then close the connection. If this is a response
6215 * message received by a proxy, the proxy MUST close the connection
6216 * to the server, discard the received response, and send a 502 (Bad
6217 * Gateway) response to the client. If this is a response message
6218 * received by a user agent, the user agent MUST close the
6219 * connection to the server and discard the received response.
6220 *
6221 * 5. If a valid Content-Length header field is present without
6222 * Transfer-Encoding, its decimal value defines the expected message
6223 * body length in octets. If the sender closes the connection or
6224 * the recipient times out before the indicated number of octets are
6225 * received, the recipient MUST consider the message to be
6226 * incomplete and close the connection.
6227 *
6228 * 6. If this is a request message and none of the above are true, then
6229 * the message body length is zero (no message body is present).
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6230 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6231 * 7. Otherwise, this is a response message without a declared message
6232 * body length, so the message body length is determined by the
6233 * number of octets received prior to the server closing the
6234 * connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6235 */
6236
6237 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6238 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6239 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6240 * FIXME: should we parse anyway and return an error on chunked encoding ?
6241 */
6242 if (txn->meth == HTTP_METH_HEAD ||
6243 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6244 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6245 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6246 goto skip_content_length;
6247 }
6248
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6249 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6250 ctx.idx = 0;
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]6251 while (http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6252 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6253 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
6254 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6255 /* bad transfer-encoding (chunked followed by something else) */
6256 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6257 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6258 break;
6259 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6260 }
6261
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6262 /* Chunked responses must have their content-length removed */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6263 ctx.idx = 0;
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6264 if (use_close_only || (msg->flags & HTTP_MSGF_TE_CHNK)) {
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6265 while (http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx))
6266 http_remove_header2(msg, &txn->hdr_idx, &ctx);
6267 }
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6268 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]6269 signed long long cl;
6270
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6271 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6272 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6273 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6274 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6275
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6276 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6277 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6278 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6279 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6280
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6281 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6282 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6283 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6284 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6285
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6286 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6287 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6288 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6289 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6290
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6291 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6292 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6293 }
6294
6295skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6296 /* Now we have to check if we need to modify the Connection header.
6297 * This is more difficult on the response than it is on the request,
6298 * because we can have two different HTTP versions and we don't know
6299 * how the client will interprete a response. For instance, let's say
6300 * that the client sends a keep-alive request in HTTP/1.0 and gets an
6301 * HTTP/1.1 response without any header. Maybe it will bound itself to
6302 * HTTP/1.0 because it only knows about it, and will consider the lack
6303 * of header as a close, or maybe it knows HTTP/1.1 and can consider
6304 * the lack of header as a keep-alive. Thus we will use two flags
6305 * indicating how a request MAY be understood by the client. In case
6306 * of multiple possibilities, we'll fix the header to be explicit. If
6307 * ambiguous cases such as both close and keepalive are seen, then we
6308 * will fall back to explicit close. Note that we won't take risks with
6309 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6310 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6311 */
6312
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6313 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
6314 txn->status == 101)) {
6315 /* Either we've established an explicit tunnel, or we're
6316 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6317 * to understand the next protocols. We have to switch to tunnel
6318 * mode, so that we transfer the request and responses then let
6319 * this protocol pass unmodified. When we later implement specific
6320 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6321 * header which contains information about that protocol for
6322 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6323 */
6324 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
6325 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6326 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
6327 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6328 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6329 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6330 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6331
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6332 /* this situation happens when combining pretend-keepalive with httpclose. */
6333 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6334 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6335 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6336 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
6337
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6338 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6339 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6340 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
6341 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6342
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6343 /* now adjust header transformations depending on current state */
6344 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
6345 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
6346 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6347 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6348 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6349 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6350 else { /* SCL / KAL */
6351 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6352 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6353 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6354 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6355
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6356 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6357 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6358
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6359 /* Some keep-alive responses are converted to Server-close if
6360 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6361 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6362 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
6363 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6364 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6365 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6366 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6367 }
6368
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6369 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6370 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6371
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6372 /* end of job, return OK */
6373 rep->analysers &= ~an_bit;
6374 rep->analyse_exp = TICK_ETERNITY;
6375 channel_auto_close(rep);
6376 return 1;
6377
6378 abort_keep_alive:
6379 /* A keep-alive request to the server failed on a network error.
6380 * The client is required to retry. We need to close without returning
6381 * any other information so that the client retries.
6382 */
6383 txn->status = 0;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6384 rep->analysers &= AN_FLT_END;
6385 s->req.analysers &= AN_FLT_END;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6386 channel_auto_close(rep);
6387 s->logs.logwait = 0;
6388 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6389 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6390 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6391 http_reply_and_close(s, txn->status, NULL);
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6392 return 0;
6393}
6394
6395/* This function performs all the processing enabled for the current response.
6396 * It normally returns 1 unless it wants to break. It relies on buffers flags,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6397 * and updates s->res.analysers. It might make sense to explode it into several
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6398 * other functions. It works like process_request (see indications above).
6399 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6400int 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]6401{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6402 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6403 struct http_txn *txn = s->txn;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6404 struct http_msg *msg = &txn->rsp;
6405 struct proxy *cur_proxy;
6406 struct cond_wordlist *wl;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]6407 enum rule_result ret = HTTP_RULE_RES_CONT;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6408
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6409 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]6410 now_ms, __FUNCTION__,
6411 s,
6412 rep,
6413 rep->rex, rep->wex,
6414 rep->flags,
6415 rep->buf->i,
6416 rep->analysers);
6417
6418 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
6419 return 0;
6420
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6421 /* The stats applet needs to adjust the Connection header but we don't
6422 * apply any filter there.
6423 */
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6424 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
6425 rep->analysers &= ~an_bit;
6426 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6427 goto skip_filters;
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6428 }
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6429
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6430 /*
6431 * We will have to evaluate the filters.
6432 * As opposed to version 1.2, now they will be evaluated in the
6433 * filters order and not in the header order. This means that
6434 * each filter has to be validated among all headers.
6435 *
6436 * Filters are tried with ->be first, then with ->fe if it is
6437 * different from ->be.
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6438 *
6439 * Maybe we are in resume condiion. In this case I choose the
6440 * "struct proxy" which contains the rule list matching the resume
6441 * pointer. If none of theses "struct proxy" match, I initialise
6442 * the process with the first one.
6443 *
6444 * In fact, I check only correspondance betwwen the current list
6445 * pointer and the ->fe rule list. If it doesn't match, I initialize
6446 * the loop with the ->be.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6447 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6448 if (s->current_rule_list == &sess->fe->http_res_rules)
6449 cur_proxy = sess->fe;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6450 else
6451 cur_proxy = s->be;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6452 while (1) {
6453 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6454
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6455 /* evaluate http-response rules */
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6456 if (ret == HTTP_RULE_RES_CONT) {
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]6457 ret = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, s);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]6458
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6459 if (ret == HTTP_RULE_RES_BADREQ)
6460 goto return_srv_prx_502;
6461
6462 if (ret == HTTP_RULE_RES_DONE) {
6463 rep->analysers &= ~an_bit;
6464 rep->analyse_exp = TICK_ETERNITY;
6465 return 1;
6466 }
6467 }
6468
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6469 /* we need to be called again. */
6470 if (ret == HTTP_RULE_RES_YIELD) {
6471 channel_dont_close(rep);
6472 return 0;
6473 }
6474
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6475 /* try headers filters */
6476 if (rule_set->rsp_exp != NULL) {
6477 if (apply_filters_to_response(s, rep, rule_set) < 0) {
6478 return_bad_resp:
6479 if (objt_server(s->target)) {
6480 objt_server(s->target)->counters.failed_resp++;
6481 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6482 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6483 s->be->be_counters.failed_resp++;
6484 return_srv_prx_502:
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6485 rep->analysers &= AN_FLT_END;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6486 txn->status = 502;
6487 s->logs.t_data = -1; /* was not a valid response */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6488 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6489 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6490 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6491 if (!(s->flags & SF_ERR_MASK))
6492 s->flags |= SF_ERR_PRXCOND;
6493 if (!(s->flags & SF_FINST_MASK))
6494 s->flags |= SF_FINST_H;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6495 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6496 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6497 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6498
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6499 /* has the response been denied ? */
6500 if (txn->flags & TX_SVDENY) {
6501 if (objt_server(s->target))
6502 objt_server(s->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6503
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6504 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6505 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6506 if (sess->listener->counters)
6507 sess->listener->counters->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6508
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6509 goto return_srv_prx_502;
6510 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]6511
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6512 /* add response headers from the rule sets in the same order */
6513 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6514 if (txn->status < 200 && txn->status != 101)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6515 break;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6516 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]6517 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]6518 ret = acl_pass(ret);
6519 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
6520 ret = !ret;
6521 if (!ret)
6522 continue;
6523 }
6524 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
6525 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6526 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6527
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6528 /* check whether we're already working on the frontend */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6529 if (cur_proxy == sess->fe)
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6530 break;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6531 cur_proxy = sess->fe;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6532 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6533
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6534 /* After this point, this anayzer can't return yield, so we can
6535 * remove the bit corresponding to this analyzer from the list.
6536 *
6537 * Note that the intermediate returns and goto found previously
6538 * reset the analyzers.
6539 */
6540 rep->analysers &= ~an_bit;
6541 rep->analyse_exp = TICK_ETERNITY;
6542
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6543 /* OK that's all we can do for 1xx responses */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6544 if (unlikely(txn->status < 200 && txn->status != 101))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6545 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6546
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6547 /*
6548 * Now check for a server cookie.
6549 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]6550 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]6551 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6552
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6553 /*
6554 * Check for cache-control or pragma headers if required.
6555 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6556 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]6557 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6558
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6559 /*
6560 * Add server cookie in the response if needed
6561 */
6562 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
6563 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6564 (!(s->flags & SF_DIRECT) ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6565 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
6566 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
6567 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
6568 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
6569 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6570 !(s->flags & SF_IGNORE_PRST)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6571 /* the server is known, it's not the one the client requested, or the
6572 * cookie's last seen date needs to be refreshed. We have to
6573 * insert a set-cookie here, except if we want to insert only on POST
6574 * requests and this one isn't. Note that servers which don't have cookies
6575 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6576 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6577 if (!objt_server(s->target)->cookie) {
6578 chunk_printf(&trash,
6579 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
6580 s->be->cookie_name);
6581 }
6582 else {
6583 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]6584
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6585 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
6586 /* emit last_date, which is mandatory */
6587 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6588 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6589 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6590
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6591 if (s->be->cookie_maxlife) {
6592 /* emit first_date, which is either the original one or
6593 * the current date.
6594 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6595 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6596 s30tob64(txn->cookie_first_date ?
6597 txn->cookie_first_date >> 2 :
6598 (date.tv_sec+3) >> 2, trash.str + trash.len);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6599 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6600 }
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6601 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6602 chunk_appendf(&trash, "; path=/");
6603 }
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6604
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6605 if (s->be->cookie_domain)
6606 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6607
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6608 if (s->be->ck_opts & PR_CK_HTTPONLY)
6609 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6610
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6611 if (s->be->ck_opts & PR_CK_SECURE)
6612 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6613
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6614 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
6615 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6616
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6617 txn->flags &= ~TX_SCK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6618 if (objt_server(s->target)->cookie && (s->flags & SF_DIRECT))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6619 /* the server did not change, only the date was updated */
6620 txn->flags |= TX_SCK_UPDATED;
6621 else
6622 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6623
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6624 /* Here, we will tell an eventual cache on the client side that we don't
6625 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6626 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6627 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6628 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6629 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6630
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6631 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6632
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6633 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
6634 "Cache-control: private", 22) < 0))
6635 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6636 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6637 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6638
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6639 /*
6640 * Check if result will be cacheable with a cookie.
6641 * We'll block the response if security checks have caught
6642 * nasty things such as a cacheable cookie.
6643 */
6644 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6645 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
6646 (s->be->options & PR_O_CHK_CACHE)) {
6647 /* we're in presence of a cacheable response containing
6648 * a set-cookie header. We'll block it as requested by
6649 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6650 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6651 if (objt_server(s->target))
6652 objt_server(s->target)->counters.failed_secu++;
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6653
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6654 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6655 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6656 if (sess->listener->counters)
6657 sess->listener->counters->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6658
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6659 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
6660 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6661 send_log(s->be, LOG_ALERT,
6662 "Blocking cacheable cookie in response from instance %s, server %s.\n",
6663 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6664 goto return_srv_prx_502;
6665 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6666
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6667 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6668 /*
6669 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
6670 * If an "Upgrade" token is found, the header is left untouched in order
6671 * 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]6672 * if anything but "Upgrade" is present in the Connection header. We don't
6673 * want to touch any 101 response either since it's switching to another
6674 * protocol.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6675 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6676 if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) &&
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6677 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6678 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6679 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
6680 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6681
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6682 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6683 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6684 /* we want a keep-alive response here. Keep-alive header
6685 * required if either side is not 1.1.
6686 */
6687 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
6688 want_flags |= TX_CON_KAL_SET;
6689 }
6690 else {
6691 /* we want a close response here. Close header required if
6692 * the server is 1.1, regardless of the client.
6693 */
6694 if (msg->flags & HTTP_MSGF_VER_11)
6695 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6696 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6697
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6698 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
6699 http_change_connection_header(txn, msg, want_flags);
6700 }
6701
6702 skip_header_mangling:
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6703 if ((msg->flags & HTTP_MSGF_XFER_LEN) || HAS_FILTERS(s) ||
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6704 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
6705 rep->analysers &= ~AN_FLT_XFER_DATA;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6706 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6707 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6708
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6709 /* if the user wants to log as soon as possible, without counting
6710 * bytes from the server, then this is the right moment. We have
6711 * to temporarily assign bytes_out to log what we currently have.
6712 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6713 if (!LIST_ISEMPTY(&sess->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6714 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
6715 s->logs.bytes_out = txn->rsp.eoh;
6716 s->do_log(s);
6717 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6718 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6719 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6720}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6721
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6722/* This function is an analyser which forwards response body (including chunk
6723 * sizes if any). It is called as soon as we must forward, even if we forward
6724 * zero byte. The only situation where it must not be called is when we're in
6725 * tunnel mode and we want to forward till the close. It's used both to forward
6726 * remaining data and to resync after end of body. It expects the msg_state to
6727 * 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]6728 * 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]6729 *
6730 * It is capable of compressing response data both in content-length mode and
6731 * in chunked mode. The state machines follows different flows depending on
6732 * whether content-length and chunked modes are used, since there are no
6733 * trailers in content-length :
6734 *
6735 * chk-mode cl-mode
6736 * ,----- BODY -----.
6737 * / \
6738 * V size > 0 V chk-mode
6739 * .--> SIZE -------------> DATA -------------> CRLF
6740 * | | size == 0 | last byte |
6741 * | v final crlf v inspected |
6742 * | TRAILERS -----------> DONE |
6743 * | |
6744 * `----------------------------------------------'
6745 *
6746 * Compression only happens in the DATA state, and must be flushed in final
6747 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
6748 * is performed at once on final states for all bytes parsed, or when leaving
6749 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6750 */
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6751
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6752int http_response_forward_body(struct stream *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6753{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6754 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6755 struct http_txn *txn = s->txn;
6756 struct http_msg *msg = &s->txn->rsp;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6757 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6758
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6759 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6760 return 0;
6761
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6762 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]6763 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6764 !s->req.analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6765 /* Output closed while we were sending data. We must abort and
6766 * wake the other side up.
6767 */
6768 msg->msg_state = HTTP_MSG_ERROR;
6769 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6770 return 1;
6771 }
6772
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6773 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6774 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6775
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6776 if (msg->msg_state == HTTP_MSG_BODY) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6777 /* we have msg->sov which points to the first byte of message
6778 * body, and res->buf.p still points to the beginning of the
6779 * message. We forward the headers now, as we don't need them
6780 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6781 */
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6782 FLT_STRM_CB(s, flt_http_headers(s, msg),
6783 /* default_ret */ 1,
6784 /* on_error */ goto return_bad_res,
6785 /* on_wait */ return 0);
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6786
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6787 /* The previous analysers guarantee that the state is somewhere
6788 * between MSG_BODY and the first MSG_DATA. So msg->sol and
6789 * msg->next are always correct.
6790 */
6791 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
6792 if (msg->flags & HTTP_MSGF_TE_CHNK)
6793 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
6794 else
6795 msg->msg_state = HTTP_MSG_DATA;
6796 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6797 }
6798
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6799 if (res->to_forward) {
6800 /* We can't process the buffer's contents yet */
6801 res->flags |= CF_WAKE_WRITE;
6802 goto missing_data;
6803 }
6804
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6805 while (1) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6806 switch (msg->msg_state - HTTP_MSG_DATA) {
6807 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6808 /* we may have some pending data starting at res->buf->p */
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6809
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6810 /* Neither content-length, nor transfer-encoding was
6811 * found, so we must read the body until the server
6812 * connection is closed. In that case, we eat data as
6813 * they come. */
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6814 if (!(msg->flags & HTTP_MSGF_XFER_LEN)) {
6815 unsigned long long len = (res->buf->i - msg->next);
6816 msg->chunk_len += len;
6817 msg->body_len += len;
6818 }
6819 ret = FLT_STRM_CB(s, flt_http_data(s, msg),
6820 /* default_ret */ MIN(msg->chunk_len, res->buf->i - msg->next),
6821 /* on_error */ goto aborted_xfer);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6822 msg->next += ret;
6823 msg->chunk_len -= ret;
6824 if (msg->chunk_len) {
6825 /* input empty or output full */
6826 if (res->buf->i > msg->next)
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6827 res->flags |= CF_WAKE_WRITE;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6828 goto missing_data;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6829 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6830
6831 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6832 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6833 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6834 } else if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
6835 !(res->flags & CF_SHUTR)) {
6836 /* The server still sending data */
6837 goto missing_data;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6838 } else {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6839 msg->msg_state = HTTP_MSG_ENDING;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6840 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6841 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6842 /* fall through for HTTP_MSG_CHUNK_CRLF */
6843
6844 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
6845 /* we want the CRLF after the data */
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame^]6846 ret = http_skip_chunk_crlf(msg);
6847 if (ret == 0)
6848 goto missing_data;
6849 else if (ret < 0) {
6850 if (msg->err_pos >= 0)
6851 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_CHUNK_CRLF, sess->fe);
6852 goto return_bad_res;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6853 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6854 msg->next += msg->sol;
6855 msg->sol = 0;
6856 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6857 /* we're in MSG_CHUNK_SIZE now, fall through */
6858
6859 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6860 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]6861 * set ->next to point to the body and switch to DATA or
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6862 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6863 */
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame^]6864 ret = http_parse_chunk_size(msg);
6865 if (ret == 0)
6866 goto missing_data;
6867 else if (ret < 0) {
6868 if (msg->err_pos >= 0)
6869 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_CHUNK_SIZE, sess->fe);
6870 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6871 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6872 msg->next += msg->sol;
6873 msg->sol = 0;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame^]6874 if (msg->chunk_len) {
6875 msg->msg_state = HTTP_MSG_DATA;
6876 break;
6877 }
6878 msg->msg_state = HTTP_MSG_TRAILERS;
6879 /* fall through */
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6880
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6881 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame^]6882 ret = http_forward_trailers(msg);
6883 if (ret < 0) {
6884 if (msg->err_pos >= 0)
6885 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_TRAILERS, sess->fe);
6886 goto return_bad_res;
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6887 }
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6888 FLT_STRM_CB(s, flt_http_chunk_trailers(s, msg),
6889 /* default_ret */ 1,
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame^]6890 /* on_error */ goto return_bad_res);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6891 msg->next += msg->sol;
6892 msg->sol = 0;
6893 if (!ret)
6894 goto missing_data;
6895 msg->msg_state = HTTP_MSG_ENDING;
6896 /* fall through */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6897
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6898 case HTTP_MSG_ENDING - HTTP_MSG_DATA:
6899 /* for keep-alive we don't want to forward closes on ENDING */
6900 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6901 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
6902 channel_dont_close(res);
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6903
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6904 /* we may have some pending data starting at res->buf->p
6905 * such as a last chunk of data or trailers.
6906 */
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6907 ret = FLT_STRM_CB(s, flt_http_forward_data(s, msg, msg->next),
6908 /* default_ret */ msg->next,
6909 /* on_error */ goto return_bad_res);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6910 b_adv(res->buf, ret);
6911 msg->next -= ret;
6912 if (msg->sov > 0)
6913 msg->sov -= ret;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6914 if (msg->next)
6915 goto skip_resync_states;
6916
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6917 FLT_STRM_CB(s, flt_http_end(s, msg),
6918 /* default_ret */ 1,
6919 /* on_error */ goto return_bad_res,
6920 /* on_wait */ goto skip_resync_states);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6921 msg->msg_state = HTTP_MSG_DONE;
6922 /* fall through */
6923
6924 default:
6925 /* other states, DONE...TUNNEL */
6926
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6927 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6928 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6929 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6930 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]6931
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6932 ret = msg->msg_state;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6933 if (http_resync_states(s)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6934 /* some state changes occurred, maybe the analyser
6935 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6936 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6937 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6938 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6939 /* response errors are most likely due to
6940 * the client aborting the transfer.
6941 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6942 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6943 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6944 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6945 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, sess->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6946 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6947 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6948 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6949 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6950
6951 skip_resync_states:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6952 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6953 }
6954 }
6955
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6956 missing_data:
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6957 /* we may have some pending data starting at res->buf->p */
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6958 ret = FLT_STRM_CB(s, flt_http_forward_data(s, msg, msg->next),
6959 /* default_ret */ msg->next,
6960 /* on_error */ goto return_bad_res);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6961 b_adv(res->buf, ret);
6962 msg->next -= ret;
6963 if (msg->sov > 0)
6964 msg->sov -= ret;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6965 if (!HAS_FILTERS(s))
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6966 msg->chunk_len -= channel_forward(res, msg->chunk_len);
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6967
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6968 if (res->flags & CF_SHUTW)
6969 goto aborted_xfer;
6970
6971 /* stop waiting for data if the input is closed before the end. If the
6972 * client side was already closed, it means that the client has aborted,
6973 * so we don't want to count this as a server abort. Otherwise it's a
6974 * server abort.
6975 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6976 if (res->flags & CF_SHUTR) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6977 if ((s->req.flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6978 goto aborted_xfer;
Christopher Fauleta46bbd82015-06-19 09:00:58 +0200[diff] [blame]6979 /* If we have some pending data, we continue the processing */
6980 if (!buffer_pending(res->buf)) {
6981 if (!(s->flags & SF_ERR_MASK))
6982 s->flags |= SF_ERR_SRVCL;
6983 s->be->be_counters.srv_aborts++;
6984 if (objt_server(s->target))
6985 objt_server(s->target)->counters.srv_aborts++;
6986 goto return_bad_res_stats_ok;
6987 }
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6988 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6989
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6990 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6991 if (!s->req.analysers)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6992 goto return_bad_res;
6993
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6994 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6995 * chunks even if the server has closed, so we don't want to set CF_DONTCLOSE.
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6996 * Similarly, with keep-alive on the client side, we don't want to forward a
6997 * close.
6998 */
Christopher Faulet92d36382015-11-05 13:35:03 +0100[diff] [blame]6999 if ((msg->flags & HTTP_MSGF_TE_CHNK) || !msg->body_len ||
7000 (msg->flags & HTTP_MSGF_COMPRESSING) ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7001 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
7002 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]7003 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7004
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7005 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7006 * 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]7007 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]7008 * modes are already handled by the stream sock layer. We must not do
7009 * this in content-length mode because it could present the MSG_MORE
7010 * flag with the last block of forwarded data, which would cause an
7011 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7012 */
Christopher Faulet92d36382015-11-05 13:35:03 +0100[diff] [blame]7013 if ((msg->flags & HTTP_MSGF_TE_CHNK) || (msg->flags & HTTP_MSGF_COMPRESSING))
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7014 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7015
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7016 /* the stream handler will take care of timeouts and errors */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7017 return 0;
7018
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]7019 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]7020 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7021 if (objt_server(s->target))
7022 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7023
7024 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7025 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]7026 /* don't send any error message as we're in the body */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]7027 http_reply_and_close(s, txn->status, NULL);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]7028 res->analysers &= AN_FLT_END;
7029 s->req.analysers &= AN_FLT_END; /* we're in data phase, we want to abort both directions */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7030 if (objt_server(s->target))
7031 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7032
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7033 if (!(s->flags & SF_ERR_MASK))
7034 s->flags |= SF_ERR_PRXCOND;
7035 if (!(s->flags & SF_FINST_MASK))
7036 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7037 return 0;
7038
7039 aborted_xfer:
7040 txn->rsp.msg_state = HTTP_MSG_ERROR;
7041 /* don't send any error message as we're in the body */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]7042 http_reply_and_close(s, txn->status, NULL);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]7043 res->analysers &= AN_FLT_END;
7044 s->req.analysers &= AN_FLT_END; /* we're in data phase, we want to abort both directions */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7045
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7046 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]7047 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7048 if (objt_server(s->target))
7049 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7050
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7051 if (!(s->flags & SF_ERR_MASK))
7052 s->flags |= SF_ERR_CLICL;
7053 if (!(s->flags & SF_FINST_MASK))
7054 s->flags |= SF_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7055 return 0;
7056}
7057
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7058/* Iterate the same filter through all request headers.
7059 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7060 * Since it can manage the switch to another backend, it updates the per-proxy
7061 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7062 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7063int 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]7064{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7065 char *cur_ptr, *cur_end, *cur_next;
7066 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7067 struct http_txn *txn = s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7068 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7069 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]7070
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7071 last_hdr = 0;
7072
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7073 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7074 old_idx = 0;
7075
7076 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7077 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7078 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7079 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7080 (exp->action == ACT_ALLOW ||
7081 exp->action == ACT_DENY ||
7082 exp->action == ACT_TARPIT))
7083 return 0;
7084
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7085 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7086 if (!cur_idx)
7087 break;
7088
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7089 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7090 cur_ptr = cur_next;
7091 cur_end = cur_ptr + cur_hdr->len;
7092 cur_next = cur_end + cur_hdr->cr + 1;
7093
7094 /* Now we have one header between cur_ptr and cur_end,
7095 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7096 */
7097
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7098 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]7099 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7100 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7101 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7102 last_hdr = 1;
7103 break;
7104
7105 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7106 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7107 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7108 break;
7109
7110 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7111 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7112 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7113 break;
7114
7115 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7116 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7117 if (trash.len < 0)
7118 return -1;
7119
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7120 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7121 /* FIXME: if the user adds a newline in the replacement, the
7122 * index will not be recalculated for now, and the new line
7123 * will not be counted as a new header.
7124 */
7125
7126 cur_end += delta;
7127 cur_next += delta;
7128 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7129 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7130 break;
7131
7132 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7133 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7134 cur_next += delta;
7135
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7136 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7137 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7138 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7139 cur_hdr->len = 0;
7140 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7141 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7142 break;
7143
7144 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7145 }
7146
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7147 /* keep the link from this header to next one in case of later
7148 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7149 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7150 old_idx = cur_idx;
7151 }
7152 return 0;
7153}
7154
7155
7156/* Apply the filter to the request line.
7157 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7158 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7159 * Since it can manage the switch to another backend, it updates the per-proxy
7160 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7161 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7162int 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]7163{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7164 char *cur_ptr, *cur_end;
7165 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7166 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7167 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7168
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7169 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7170 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7171 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7172 (exp->action == ACT_ALLOW ||
7173 exp->action == ACT_DENY ||
7174 exp->action == ACT_TARPIT))
7175 return 0;
7176 else if (exp->action == ACT_REMOVE)
7177 return 0;
7178
7179 done = 0;
7180
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7181 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7182 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7183
7184 /* Now we have the request line between cur_ptr and cur_end */
7185
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7186 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]7187 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7188 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7189 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7190 done = 1;
7191 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7192
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7193 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7194 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7195 done = 1;
7196 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7197
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7198 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7199 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7200 done = 1;
7201 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7202
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7203 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7204 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7205 if (trash.len < 0)
7206 return -1;
7207
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7208 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7209 /* FIXME: if the user adds a newline in the replacement, the
7210 * index will not be recalculated for now, and the new line
7211 * will not be counted as a new header.
7212 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7213
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7214 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7215 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7216 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7217 HTTP_MSG_RQMETH,
7218 cur_ptr, cur_end + 1,
7219 NULL, NULL);
7220 if (unlikely(!cur_end))
7221 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7222
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7223 /* we have a full request and we know that we have either a CR
7224 * or an LF at <ptr>.
7225 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7226 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
7227 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]7228 /* there is no point trying this regex on headers */
7229 return 1;
7230 }
7231 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7232 return done;
7233}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]7234
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7235
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7236
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7237/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7238 * 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]7239 * 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]7240 * unparsable request. Since it can manage the switch to another backend, it
7241 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7242 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7243int apply_filters_to_request(struct stream *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7244{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7245 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7246 struct http_txn *txn = s->txn;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7247 struct hdr_exp *exp;
7248
7249 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7250 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7251
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7252 /*
7253 * The interleaving of transformations and verdicts
7254 * makes it difficult to decide to continue or stop
7255 * the evaluation.
7256 */
7257
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7258 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
7259 break;
7260
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7261 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7262 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7263 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7264 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7265
7266 /* if this filter had a condition, evaluate it now and skip to
7267 * next filter if the condition does not match.
7268 */
7269 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7270 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]7271 ret = acl_pass(ret);
7272 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7273 ret = !ret;
7274
7275 if (!ret)
7276 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7277 }
7278
7279 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7280 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7281 if (unlikely(ret < 0))
7282 return -1;
7283
7284 if (likely(ret == 0)) {
7285 /* The filter did not match the request, it can be
7286 * iterated through all headers.
7287 */
Willy Tarreau34d4c3c2015-01-30 20:58:58 +0100[diff] [blame]7288 if (unlikely(apply_filter_to_req_headers(s, req, exp) < 0))
7289 return -1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7290 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7291 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7292 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7293}
7294
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7295
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7296/* Find the end of a cookie value contained between <s> and <e>. It works the
7297 * same way as with headers above except that the semi-colon also ends a token.
7298 * See RFC2965 for more information. Note that it requires a valid header to
7299 * return a valid result.
7300 */
7301char *find_cookie_value_end(char *s, const char *e)
7302{
7303 int quoted, qdpair;
7304
7305 quoted = qdpair = 0;
7306 for (; s < e; s++) {
7307 if (qdpair) qdpair = 0;
7308 else if (quoted) {
7309 if (*s == '\\') qdpair = 1;
7310 else if (*s == '"') quoted = 0;
7311 }
7312 else if (*s == '"') quoted = 1;
7313 else if (*s == ',' || *s == ';') return s;
7314 }
7315 return s;
7316}
7317
7318/* Delete a value in a header between delimiters <from> and <next> in buffer
7319 * <buf>. The number of characters displaced is returned, and the pointer to
7320 * the first delimiter is updated if required. The function tries as much as
7321 * possible to respect the following principles :
7322 * - replace <from> delimiter by the <next> one unless <from> points to a
7323 * colon, in which case <next> is simply removed
7324 * - set exactly one space character after the new first delimiter, unless
7325 * there are not enough characters in the block being moved to do so.
7326 * - remove unneeded spaces before the previous delimiter and after the new
7327 * one.
7328 *
7329 * It is the caller's responsibility to ensure that :
7330 * - <from> points to a valid delimiter or the colon ;
7331 * - <next> points to a valid delimiter or the final CR/LF ;
7332 * - there are non-space chars before <from> ;
7333 * - there is a CR/LF at or after <next>.
7334 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]7335int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7336{
7337 char *prev = *from;
7338
7339 if (*prev == ':') {
7340 /* We're removing the first value, preserve the colon and add a
7341 * space if possible.
7342 */
7343 if (!http_is_crlf[(unsigned char)*next])
7344 next++;
7345 prev++;
7346 if (prev < next)
7347 *prev++ = ' ';
7348
7349 while (http_is_spht[(unsigned char)*next])
7350 next++;
7351 } else {
7352 /* Remove useless spaces before the old delimiter. */
7353 while (http_is_spht[(unsigned char)*(prev-1)])
7354 prev--;
7355 *from = prev;
7356
7357 /* copy the delimiter and if possible a space if we're
7358 * not at the end of the line.
7359 */
7360 if (!http_is_crlf[(unsigned char)*next]) {
7361 *prev++ = *next++;
7362 if (prev + 1 < next)
7363 *prev++ = ' ';
7364 while (http_is_spht[(unsigned char)*next])
7365 next++;
7366 }
7367 }
7368 return buffer_replace2(buf, prev, next, NULL, 0);
7369}
7370
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7371/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7372 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7373 * desirable to call it only when needed. This code is quite complex because
7374 * of the multiple very crappy and ambiguous syntaxes we have to support. it
7375 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7376 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7377void manage_client_side_cookies(struct stream *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7378{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7379 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7380 struct session *sess = s->sess;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7381 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7382 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7383 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
7384 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7385
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7386 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]7387 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7388 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7389
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7390 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7391 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7392 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7393
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7394 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7395 hdr_beg = hdr_next;
7396 hdr_end = hdr_beg + cur_hdr->len;
7397 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7398
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7399 /* We have one full header between hdr_beg and hdr_end, and the
7400 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7401 * "Cookie:" headers.
7402 */
7403
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7404 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7405 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7406 old_idx = cur_idx;
7407 continue;
7408 }
7409
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7410 del_from = NULL; /* nothing to be deleted */
7411 preserve_hdr = 0; /* assume we may kill the whole header */
7412
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7413 /* Now look for cookies. Conforming to RFC2109, we have to support
7414 * attributes whose name begin with a '$', and associate them with
7415 * the right cookie, if we want to delete this cookie.
7416 * So there are 3 cases for each cookie read :
7417 * 1) it's a special attribute, beginning with a '$' : ignore it.
7418 * 2) it's a server id cookie that we *MAY* want to delete : save
7419 * some pointers on it (last semi-colon, beginning of cookie...)
7420 * 3) it's an application cookie : we *MAY* have to delete a previous
7421 * "special" cookie.
7422 * At the end of loop, if a "special" cookie remains, we may have to
7423 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7424 * *MUST* delete it.
7425 *
7426 * Note: RFC2965 is unclear about the processing of spaces around
7427 * the equal sign in the ATTR=VALUE form. A careful inspection of
7428 * the RFC explicitly allows spaces before it, and not within the
7429 * tokens (attrs or values). An inspection of RFC2109 allows that
7430 * too but section 10.1.3 lets one think that spaces may be allowed
7431 * after the equal sign too, resulting in some (rare) buggy
7432 * implementations trying to do that. So let's do what servers do.
7433 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
7434 * allowed quoted strings in values, with any possible character
7435 * after a backslash, including control chars and delimitors, which
7436 * causes parsing to become ambiguous. Browsers also allow spaces
7437 * within values even without quotes.
7438 *
7439 * We have to keep multiple pointers in order to support cookie
7440 * removal at the beginning, middle or end of header without
7441 * corrupting the header. All of these headers are valid :
7442 *
7443 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
7444 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
7445 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
7446 * | | | | | | | | |
7447 * | | | | | | | | hdr_end <--+
7448 * | | | | | | | +--> next
7449 * | | | | | | +----> val_end
7450 * | | | | | +-----------> val_beg
7451 * | | | | +--------------> equal
7452 * | | | +----------------> att_end
7453 * | | +---------------------> att_beg
7454 * | +--------------------------> prev
7455 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7456 */
7457
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7458 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
7459 /* Iterate through all cookies on this line */
7460
7461 /* find att_beg */
7462 att_beg = prev + 1;
7463 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7464 att_beg++;
7465
7466 /* find att_end : this is the first character after the last non
7467 * space before the equal. It may be equal to hdr_end.
7468 */
7469 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7470
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7471 while (equal < hdr_end) {
7472 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7473 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7474 if (http_is_spht[(unsigned char)*equal++])
7475 continue;
7476 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7477 }
7478
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7479 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7480 * is between <att_beg> and <equal>, both may be identical.
7481 */
7482
7483 /* look for end of cookie if there is an equal sign */
7484 if (equal < hdr_end && *equal == '=') {
7485 /* look for the beginning of the value */
7486 val_beg = equal + 1;
7487 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7488 val_beg++;
7489
7490 /* find the end of the value, respecting quotes */
7491 next = find_cookie_value_end(val_beg, hdr_end);
7492
7493 /* make val_end point to the first white space or delimitor after the value */
7494 val_end = next;
7495 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7496 val_end--;
7497 } else {
7498 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7499 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7500
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7501 /* We have nothing to do with attributes beginning with '$'. However,
7502 * they will automatically be removed if a header before them is removed,
7503 * since they're supposed to be linked together.
7504 */
7505 if (*att_beg == '$')
7506 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7507
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7508 /* Ignore cookies with no equal sign */
7509 if (equal == next) {
7510 /* This is not our cookie, so we must preserve it. But if we already
7511 * scheduled another cookie for removal, we cannot remove the
7512 * complete header, but we can remove the previous block itself.
7513 */
7514 preserve_hdr = 1;
7515 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7516 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7517 val_end += delta;
7518 next += delta;
7519 hdr_end += delta;
7520 hdr_next += delta;
7521 cur_hdr->len += delta;
7522 http_msg_move_end(&txn->req, delta);
7523 prev = del_from;
7524 del_from = NULL;
7525 }
7526 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7527 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7528
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7529 /* if there are spaces around the equal sign, we need to
7530 * strip them otherwise we'll get trouble for cookie captures,
7531 * or even for rewrites. Since this happens extremely rarely,
7532 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7533 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7534 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7535 int stripped_before = 0;
7536 int stripped_after = 0;
7537
7538 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7539 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7540 equal += stripped_before;
7541 val_beg += stripped_before;
7542 }
7543
7544 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7545 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7546 val_beg += stripped_after;
7547 stripped_before += stripped_after;
7548 }
7549
7550 val_end += stripped_before;
7551 next += stripped_before;
7552 hdr_end += stripped_before;
7553 hdr_next += stripped_before;
7554 cur_hdr->len += stripped_before;
7555 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7556 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7557 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7558
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7559 /* First, let's see if we want to capture this cookie. We check
7560 * that we don't already have a client side cookie, because we
7561 * can only capture one. Also as an optimisation, we ignore
7562 * cookies shorter than the declared name.
7563 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7564 if (sess->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7565 (val_end - att_beg >= sess->fe->capture_namelen) &&
7566 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7567 int log_len = val_end - att_beg;
7568
7569 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7570 Alert("HTTP logging : out of memory.\n");
7571 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7572 if (log_len > sess->fe->capture_len)
7573 log_len = sess->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7574 memcpy(txn->cli_cookie, att_beg, log_len);
7575 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7576 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7577 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7578
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7579 /* Persistence cookies in passive, rewrite or insert mode have the
7580 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7581 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7582 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7583 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7584 * For cookies in prefix mode, the form is :
7585 *
7586 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7587 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7588 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
7589 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
7590 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7591 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7592
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7593 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7594 * have the server ID between val_beg and delim, and the original cookie between
7595 * delim+1 and val_end. Otherwise, delim==val_end :
7596 *
7597 * Cookie: NAME=SRV; # in all but prefix modes
7598 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7599 * | || || | |+-> next
7600 * | || || | +--> val_end
7601 * | || || +---------> delim
7602 * | || |+------------> val_beg
7603 * | || +-------------> att_end = equal
7604 * | |+-----------------> att_beg
7605 * | +------------------> prev
7606 * +-------------------------> hdr_beg
7607 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7608
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7609 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7610 for (delim = val_beg; delim < val_end; delim++)
7611 if (*delim == COOKIE_DELIM)
7612 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7613 } else {
7614 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7615 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7616 /* Now check if the cookie contains a date field, which would
7617 * appear after a vertical bar ('|') just after the server name
7618 * and before the delimiter.
7619 */
7620 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7621 if (vbar1) {
7622 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7623 * right is the last seen date. It is a base64 encoded
7624 * 30-bit value representing the UNIX date since the
7625 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7626 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7627 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7628 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7629 if (val_end - vbar1 >= 5) {
7630 val = b64tos30(vbar1);
7631 if (val > 0)
7632 txn->cookie_last_date = val << 2;
7633 }
7634 /* look for a second vertical bar */
7635 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7636 if (vbar1 && (val_end - vbar1 > 5)) {
7637 val = b64tos30(vbar1 + 1);
7638 if (val > 0)
7639 txn->cookie_first_date = val << 2;
7640 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7641 }
7642 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7643
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7644 /* if the cookie has an expiration date and the proxy wants to check
7645 * it, then we do that now. We first check if the cookie is too old,
7646 * then only if it has expired. We detect strict overflow because the
7647 * time resolution here is not great (4 seconds). Cookies with dates
7648 * in the future are ignored if their offset is beyond one day. This
7649 * allows an admin to fix timezone issues without expiring everyone
7650 * and at the same time avoids keeping unwanted side effects for too
7651 * long.
7652 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7653 if (txn->cookie_first_date && s->be->cookie_maxlife &&
7654 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7655 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7656 txn->flags &= ~TX_CK_MASK;
7657 txn->flags |= TX_CK_OLD;
7658 delim = val_beg; // let's pretend we have not found the cookie
7659 txn->cookie_first_date = 0;
7660 txn->cookie_last_date = 0;
7661 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7662 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
7663 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7664 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7665 txn->flags &= ~TX_CK_MASK;
7666 txn->flags |= TX_CK_EXPIRED;
7667 delim = val_beg; // let's pretend we have not found the cookie
7668 txn->cookie_first_date = 0;
7669 txn->cookie_last_date = 0;
7670 }
7671
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7672 /* Here, we'll look for the first running server which supports the cookie.
7673 * This allows to share a same cookie between several servers, for example
7674 * to dedicate backup servers to specific servers only.
7675 * However, to prevent clients from sticking to cookie-less backup server
7676 * when they have incidentely learned an empty cookie, we simply ignore
7677 * empty cookies and mark them as invalid.
7678 * The same behaviour is applied when persistence must be ignored.
7679 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7680 if ((delim == val_beg) || (s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7681 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7682
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7683 while (srv) {
7684 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7685 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7686 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7687 (s->be->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7688 (s->flags & SF_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7689 /* we found the server and we can use it */
7690 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7691 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7692 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7693 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7694 break;
7695 } else {
7696 /* we found a server, but it's down,
7697 * mark it as such and go on in case
7698 * another one is available.
7699 */
7700 txn->flags &= ~TX_CK_MASK;
7701 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7702 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7703 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7704 srv = srv->next;
7705 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7706
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7707 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7708 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7709 txn->flags &= ~TX_CK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7710 if ((s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7711 txn->flags |= TX_CK_UNUSED;
7712 else
7713 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7714 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7715
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7716 /* depending on the cookie mode, we may have to either :
7717 * - delete the complete cookie if we're in insert+indirect mode, so that
7718 * the server never sees it ;
7719 * - remove the server id from the cookie value, and tag the cookie as an
7720 * application cookie so that it does not get accidentely removed later,
7721 * if we're in cookie prefix mode
7722 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7723 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7724 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7725
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7726 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7727 val_end += delta;
7728 next += delta;
7729 hdr_end += delta;
7730 hdr_next += delta;
7731 cur_hdr->len += delta;
7732 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7733
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7734 del_from = NULL;
7735 preserve_hdr = 1; /* we want to keep this cookie */
7736 }
7737 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7738 (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]7739 del_from = prev;
7740 }
7741 } else {
7742 /* This is not our cookie, so we must preserve it. But if we already
7743 * scheduled another cookie for removal, we cannot remove the
7744 * complete header, but we can remove the previous block itself.
7745 */
7746 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7747
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7748 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7749 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7750 if (att_beg >= del_from)
7751 att_beg += delta;
7752 if (att_end >= del_from)
7753 att_end += delta;
7754 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7755 val_end += delta;
7756 next += delta;
7757 hdr_end += delta;
7758 hdr_next += delta;
7759 cur_hdr->len += delta;
7760 http_msg_move_end(&txn->req, delta);
7761 prev = del_from;
7762 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7763 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7764 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7765
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7766 /* continue with next cookie on this header line */
7767 att_beg = next;
7768 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7769
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7770 /* There are no more cookies on this line.
7771 * We may still have one (or several) marked for deletion at the
7772 * end of the line. We must do this now in two ways :
7773 * - if some cookies must be preserved, we only delete from the
7774 * mark to the end of line ;
7775 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7776 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7777 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7778 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7779 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7780 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7781 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7782 cur_hdr->len += delta;
7783 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7784 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7785
7786 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7787 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7788 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7789 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7790 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7791 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7792 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7793 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7794 }
7795
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7796 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7797 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7798 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7799}
7800
7801
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7802/* Iterate the same filter through all response headers contained in <rtr>.
7803 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7804 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7805int 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]7806{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7807 char *cur_ptr, *cur_end, *cur_next;
7808 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7809 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7810 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7811 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7812
7813 last_hdr = 0;
7814
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7815 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7816 old_idx = 0;
7817
7818 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7819 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7820 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7821 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7822 (exp->action == ACT_ALLOW ||
7823 exp->action == ACT_DENY))
7824 return 0;
7825
7826 cur_idx = txn->hdr_idx.v[old_idx].next;
7827 if (!cur_idx)
7828 break;
7829
7830 cur_hdr = &txn->hdr_idx.v[cur_idx];
7831 cur_ptr = cur_next;
7832 cur_end = cur_ptr + cur_hdr->len;
7833 cur_next = cur_end + cur_hdr->cr + 1;
7834
7835 /* Now we have one header between cur_ptr and cur_end,
7836 * and the next header starts at cur_next.
7837 */
7838
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7839 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]7840 switch (exp->action) {
7841 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7842 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7843 last_hdr = 1;
7844 break;
7845
7846 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7847 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7848 last_hdr = 1;
7849 break;
7850
7851 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7852 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7853 if (trash.len < 0)
7854 return -1;
7855
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7856 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7857 /* FIXME: if the user adds a newline in the replacement, the
7858 * index will not be recalculated for now, and the new line
7859 * will not be counted as a new header.
7860 */
7861
7862 cur_end += delta;
7863 cur_next += delta;
7864 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7865 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7866 break;
7867
7868 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7869 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7870 cur_next += delta;
7871
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7872 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7873 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7874 txn->hdr_idx.used--;
7875 cur_hdr->len = 0;
7876 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7877 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7878 break;
7879
7880 }
7881 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7882
7883 /* keep the link from this header to next one in case of later
7884 * removal of next header.
7885 */
7886 old_idx = cur_idx;
7887 }
7888 return 0;
7889}
7890
7891
7892/* Apply the filter to the status line in the response buffer <rtr>.
7893 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7894 * or -1 if a replacement resulted in an invalid status line.
7895 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7896int 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]7897{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7898 char *cur_ptr, *cur_end;
7899 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7900 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7901 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7902
7903
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7904 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7905 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7906 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7907 (exp->action == ACT_ALLOW ||
7908 exp->action == ACT_DENY))
7909 return 0;
7910 else if (exp->action == ACT_REMOVE)
7911 return 0;
7912
7913 done = 0;
7914
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7915 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7916 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7917
7918 /* Now we have the status line between cur_ptr and cur_end */
7919
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7920 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]7921 switch (exp->action) {
7922 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7923 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7924 done = 1;
7925 break;
7926
7927 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7928 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7929 done = 1;
7930 break;
7931
7932 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7933 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7934 if (trash.len < 0)
7935 return -1;
7936
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7937 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7938 /* FIXME: if the user adds a newline in the replacement, the
7939 * index will not be recalculated for now, and the new line
7940 * will not be counted as a new header.
7941 */
7942
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7943 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7944 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7945 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7946 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7947 cur_ptr, cur_end + 1,
7948 NULL, NULL);
7949 if (unlikely(!cur_end))
7950 return -1;
7951
7952 /* we have a full respnse and we know that we have either a CR
7953 * or an LF at <ptr>.
7954 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7955 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]7956 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]7957 /* there is no point trying this regex on headers */
7958 return 1;
7959 }
7960 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7961 return done;
7962}
7963
7964
7965
7966/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7967 * 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]7968 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7969 * unparsable response.
7970 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7971int apply_filters_to_response(struct stream *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7972{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7973 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7974 struct http_txn *txn = s->txn;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7975 struct hdr_exp *exp;
7976
7977 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7978 int ret;
7979
7980 /*
7981 * The interleaving of transformations and verdicts
7982 * makes it difficult to decide to continue or stop
7983 * the evaluation.
7984 */
7985
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7986 if (txn->flags & TX_SVDENY)
7987 break;
7988
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7989 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7990 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7991 exp->action == ACT_PASS)) {
7992 exp = exp->next;
7993 continue;
7994 }
7995
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7996 /* if this filter had a condition, evaluate it now and skip to
7997 * next filter if the condition does not match.
7998 */
7999 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]8000 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]8001 ret = acl_pass(ret);
8002 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
8003 ret = !ret;
8004 if (!ret)
8005 continue;
8006 }
8007
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8008 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8009 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8010 if (unlikely(ret < 0))
8011 return -1;
8012
8013 if (likely(ret == 0)) {
8014 /* The filter did not match the response, it can be
8015 * iterated through all headers.
8016 */
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8017 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
8018 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8019 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8020 }
8021 return 0;
8022}
8023
8024
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8025/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]8026 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8027 * desirable to call it only when needed. This function is also used when we
8028 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8029 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8030void manage_server_side_cookies(struct stream *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8031{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8032 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8033 struct session *sess = s->sess;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8034 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8035 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8036 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8037 char *hdr_beg, *hdr_end, *hdr_next;
8038 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8039
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8040 /* Iterate through the headers.
8041 * we start with the start line.
8042 */
8043 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8044 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8045
8046 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
8047 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8048 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8049
8050 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8051 hdr_beg = hdr_next;
8052 hdr_end = hdr_beg + cur_hdr->len;
8053 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8054
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8055 /* We have one full header between hdr_beg and hdr_end, and the
8056 * next header starts at hdr_next. We're only interested in
8057 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8058 */
8059
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8060 is_cookie2 = 0;
8061 prev = hdr_beg + 10;
8062 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8063 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8064 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
8065 if (!val) {
8066 old_idx = cur_idx;
8067 continue;
8068 }
8069 is_cookie2 = 1;
8070 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8071 }
8072
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8073 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
8074 * <prev> points to the colon.
8075 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8076 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8077
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8078 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
8079 * check-cache is enabled) and we are not interested in checking
8080 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]8081 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]8082 if (s->be->cookie_name == NULL && sess->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8083 return;
8084
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8085 /* OK so now we know we have to process this response cookie.
8086 * The format of the Set-Cookie header is slightly different
8087 * from the format of the Cookie header in that it does not
8088 * support the comma as a cookie delimiter (thus the header
8089 * cannot be folded) because the Expires attribute described in
8090 * the original Netscape's spec may contain an unquoted date
8091 * with a comma inside. We have to live with this because
8092 * many browsers don't support Max-Age and some browsers don't
8093 * support quoted strings. However the Set-Cookie2 header is
8094 * clean.
8095 *
8096 * We have to keep multiple pointers in order to support cookie
8097 * removal at the beginning, middle or end of header without
8098 * corrupting the header (in case of set-cookie2). A special
8099 * pointer, <scav> points to the beginning of the set-cookie-av
8100 * fields after the first semi-colon. The <next> pointer points
8101 * either to the end of line (set-cookie) or next unquoted comma
8102 * (set-cookie2). All of these headers are valid :
8103 *
8104 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
8105 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8106 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8107 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
8108 * | | | | | | | | | |
8109 * | | | | | | | | +-> next hdr_end <--+
8110 * | | | | | | | +------------> scav
8111 * | | | | | | +--------------> val_end
8112 * | | | | | +--------------------> val_beg
8113 * | | | | +----------------------> equal
8114 * | | | +------------------------> att_end
8115 * | | +----------------------------> att_beg
8116 * | +------------------------------> prev
8117 * +-----------------------------------------> hdr_beg
8118 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8119
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8120 for (; prev < hdr_end; prev = next) {
8121 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8122
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8123 /* find att_beg */
8124 att_beg = prev + 1;
8125 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8126 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8127
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8128 /* find att_end : this is the first character after the last non
8129 * space before the equal. It may be equal to hdr_end.
8130 */
8131 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8132
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8133 while (equal < hdr_end) {
8134 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
8135 break;
8136 if (http_is_spht[(unsigned char)*equal++])
8137 continue;
8138 att_end = equal;
8139 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8140
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8141 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8142 * is between <att_beg> and <equal>, both may be identical.
8143 */
8144
8145 /* look for end of cookie if there is an equal sign */
8146 if (equal < hdr_end && *equal == '=') {
8147 /* look for the beginning of the value */
8148 val_beg = equal + 1;
8149 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8150 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8151
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8152 /* find the end of the value, respecting quotes */
8153 next = find_cookie_value_end(val_beg, hdr_end);
8154
8155 /* make val_end point to the first white space or delimitor after the value */
8156 val_end = next;
8157 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8158 val_end--;
8159 } else {
8160 /* <equal> points to next comma, semi-colon or EOL */
8161 val_beg = val_end = next = equal;
8162 }
8163
8164 if (next < hdr_end) {
8165 /* Set-Cookie2 supports multiple cookies, and <next> points to
8166 * a colon or semi-colon before the end. So skip all attr-value
8167 * pairs and look for the next comma. For Set-Cookie, since
8168 * commas are permitted in values, skip to the end.
8169 */
8170 if (is_cookie2)
8171 next = find_hdr_value_end(next, hdr_end);
8172 else
8173 next = hdr_end;
8174 }
8175
8176 /* Now everything is as on the diagram above */
8177
8178 /* Ignore cookies with no equal sign */
8179 if (equal == val_end)
8180 continue;
8181
8182 /* If there are spaces around the equal sign, we need to
8183 * strip them otherwise we'll get trouble for cookie captures,
8184 * or even for rewrites. Since this happens extremely rarely,
8185 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8186 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8187 if (unlikely(att_end != equal || val_beg > equal + 1)) {
8188 int stripped_before = 0;
8189 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8190
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8191 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8192 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8193 equal += stripped_before;
8194 val_beg += stripped_before;
8195 }
8196
8197 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8198 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8199 val_beg += stripped_after;
8200 stripped_before += stripped_after;
8201 }
8202
8203 val_end += stripped_before;
8204 next += stripped_before;
8205 hdr_end += stripped_before;
8206 hdr_next += stripped_before;
8207 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]8208 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8209 }
8210
8211 /* First, let's see if we want to capture this cookie. We check
8212 * that we don't already have a server side cookie, because we
8213 * can only capture one. Also as an optimisation, we ignore
8214 * cookies shorter than the declared name.
8215 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8216 if (sess->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]8217 txn->srv_cookie == NULL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8218 (val_end - att_beg >= sess->fe->capture_namelen) &&
8219 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8220 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]8221 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8222 Alert("HTTP logging : out of memory.\n");
8223 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8224 else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8225 if (log_len > sess->fe->capture_len)
8226 log_len = sess->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8227 memcpy(txn->srv_cookie, att_beg, log_len);
8228 txn->srv_cookie[log_len] = 0;
8229 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8230 }
8231
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8232 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8233 /* now check if we need to process it for persistence */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8234 if (!(s->flags & SF_IGNORE_PRST) &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8235 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
8236 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8237 /* assume passive cookie by default */
8238 txn->flags &= ~TX_SCK_MASK;
8239 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8240
8241 /* If the cookie is in insert mode on a known server, we'll delete
8242 * this occurrence because we'll insert another one later.
8243 * 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]8244 * a direct access.
8245 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8246 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]8247 /* The "preserve" flag was set, we don't want to touch the
8248 * server's cookie.
8249 */
8250 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8251 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8252 ((s->flags & SF_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8253 /* this cookie must be deleted */
8254 if (*prev == ':' && next == hdr_end) {
8255 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8256 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8257 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8258 txn->hdr_idx.used--;
8259 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8260 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8261 hdr_next += delta;
8262 http_msg_move_end(&txn->rsp, delta);
8263 /* note: while both invalid now, <next> and <hdr_end>
8264 * are still equal, so the for() will stop as expected.
8265 */
8266 } else {
8267 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8268 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8269 next = prev;
8270 hdr_end += delta;
8271 hdr_next += delta;
8272 cur_hdr->len += delta;
8273 http_msg_move_end(&txn->rsp, delta);
8274 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8275 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8276 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8277 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8278 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8279 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8280 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8281 * with this server since we know it.
8282 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8283 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8284 next += delta;
8285 hdr_end += delta;
8286 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8287 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8288 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8289
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8290 txn->flags &= ~TX_SCK_MASK;
8291 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8292 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8293 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8294 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8295 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8296 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8297 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8298 next += delta;
8299 hdr_end += delta;
8300 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8301 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8302 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8303
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8304 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8305 txn->flags &= ~TX_SCK_MASK;
8306 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8307 }
8308 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8309 /* that's done for this cookie, check the next one on the same
8310 * line when next != hdr_end (only if is_cookie2).
8311 */
8312 }
8313 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8314 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8315 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8316}
8317
8318
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8319/*
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8320 * Check if response is cacheable or not. Updates s->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8321 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8322void check_response_for_cacheability(struct stream *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8323{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8324 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8325 char *p1, *p2;
8326
8327 char *cur_ptr, *cur_end, *cur_next;
8328 int cur_idx;
8329
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]8330 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8331 return;
8332
8333 /* Iterate through the headers.
8334 * we start with the start line.
8335 */
8336 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8337 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8338
8339 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
8340 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8341 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8342
8343 cur_hdr = &txn->hdr_idx.v[cur_idx];
8344 cur_ptr = cur_next;
8345 cur_end = cur_ptr + cur_hdr->len;
8346 cur_next = cur_end + cur_hdr->cr + 1;
8347
8348 /* We have one full header between cur_ptr and cur_end, and the
8349 * next header starts at cur_next. We're only interested in
8350 * "Cookie:" headers.
8351 */
8352
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8353 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
8354 if (val) {
8355 if ((cur_end - (cur_ptr + val) >= 8) &&
8356 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
8357 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
8358 return;
8359 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8360 }
8361
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8362 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
8363 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8364 continue;
8365
8366 /* OK, right now we know we have a cache-control header at cur_ptr */
8367
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8368 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8369
8370 if (p1 >= cur_end) /* no more info */
8371 continue;
8372
8373 /* p1 is at the beginning of the value */
8374 p2 = p1;
8375
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]8376 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8377 p2++;
8378
8379 /* we have a complete value between p1 and p2 */
8380 if (p2 < cur_end && *p2 == '=') {
8381 /* we have something of the form no-cache="set-cookie" */
8382 if ((cur_end - p1 >= 21) &&
8383 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
8384 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8385 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8386 continue;
8387 }
8388
8389 /* OK, so we know that either p2 points to the end of string or to a comma */
8390 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8391 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8392 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8393 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8394 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8395 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8396 return;
8397 }
8398
8399 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8400 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8401 continue;
8402 }
8403 }
8404}
8405
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8406
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8407/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8408 * 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]8409 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8410 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8411 * 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]8412 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8413 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8414 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8415 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8416int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8417{
8418 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8419 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8420 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8421
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8422 if (!uri_auth)
8423 return 0;
8424
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8425 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]8426 return 0;
8427
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8428 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8429 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8430 return 0;
8431
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8432 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8433 return 0;
8434
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8435 return 1;
8436}
8437
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8438/*
8439 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8440 * By default it tries to report the error position as msg->err_pos. However if
8441 * this one is not set, it will then report msg->next, which is the last known
8442 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8443 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8444 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8445void http_capture_bad_message(struct error_snapshot *es, struct stream *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8446 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8447 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8448{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8449 struct session *sess = strm_sess(s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8450 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8451 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8452
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8453 es->len = MIN(chn->buf->i, sizeof(es->buf));
8454 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8455 len1 = MIN(len1, es->len);
8456 len2 = es->len - len1; /* remaining data if buffer wraps */
8457
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8458 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8459 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8460 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8461
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8462 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8463 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8464 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8465 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8466
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8467 es->when = date; // user-visible date
8468 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8469 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8470 es->oe = other_end;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8471 if (objt_conn(sess->origin))
8472 es->src = __objt_conn(sess->origin)->addr.from;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8473 else
8474 memset(&es->src, 0, sizeof(es->src));
8475
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8476 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8477 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8478 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8479 es->s_flags = s->flags;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8480 es->t_flags = s->txn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8481 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8482 es->b_out = chn->buf->o;
8483 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8484 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8485 es->m_clen = msg->chunk_len;
8486 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8487}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8488
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8489/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8490 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8491 * performed over the whole headers. Otherwise it must contain a valid header
8492 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8493 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8494 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8495 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8496 * -1. The value fetch stops at commas, so this function is suited for use with
8497 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8498 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8499 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8500unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8501 struct hdr_idx *idx, int occ,
8502 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8503{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8504 struct hdr_ctx local_ctx;
8505 char *ptr_hist[MAX_HDR_HISTORY];
8506 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8507 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8508 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8509
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8510 if (!ctx) {
8511 local_ctx.idx = 0;
8512 ctx = &local_ctx;
8513 }
8514
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8515 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8516 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8517 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8518 occ--;
8519 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8520 *vptr = ctx->line + ctx->val;
8521 *vlen = ctx->vlen;
8522 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8523 }
8524 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8525 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8526 }
8527
8528 /* negative occurrence, we scan all the list then walk back */
8529 if (-occ > MAX_HDR_HISTORY)
8530 return 0;
8531
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8532 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8533 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8534 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8535 len_hist[hist_ptr] = ctx->vlen;
8536 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8537 hist_ptr = 0;
8538 found++;
8539 }
8540 if (-occ > found)
8541 return 0;
8542 /* 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]8543 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8544 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8545 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8546 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8547 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8548 if (hist_ptr >= MAX_HDR_HISTORY)
8549 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8550 *vptr = ptr_hist[hist_ptr];
8551 *vlen = len_hist[hist_ptr];
8552 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8553}
8554
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8555/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8556 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8557 * performed over the whole headers. Otherwise it must contain a valid header
8558 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8559 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8560 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8561 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8562 * -1. This function differs from http_get_hdr() in that it only returns full
8563 * line header values and does not stop at commas.
8564 * The return value is 0 if nothing was found, or non-zero otherwise.
8565 */
8566unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8567 struct hdr_idx *idx, int occ,
8568 struct hdr_ctx *ctx, char **vptr, int *vlen)
8569{
8570 struct hdr_ctx local_ctx;
8571 char *ptr_hist[MAX_HDR_HISTORY];
8572 int len_hist[MAX_HDR_HISTORY];
8573 unsigned int hist_ptr;
8574 int found;
8575
8576 if (!ctx) {
8577 local_ctx.idx = 0;
8578 ctx = &local_ctx;
8579 }
8580
8581 if (occ >= 0) {
8582 /* search from the beginning */
8583 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8584 occ--;
8585 if (occ <= 0) {
8586 *vptr = ctx->line + ctx->val;
8587 *vlen = ctx->vlen;
8588 return 1;
8589 }
8590 }
8591 return 0;
8592 }
8593
8594 /* negative occurrence, we scan all the list then walk back */
8595 if (-occ > MAX_HDR_HISTORY)
8596 return 0;
8597
8598 found = hist_ptr = 0;
8599 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8600 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8601 len_hist[hist_ptr] = ctx->vlen;
8602 if (++hist_ptr >= MAX_HDR_HISTORY)
8603 hist_ptr = 0;
8604 found++;
8605 }
8606 if (-occ > found)
8607 return 0;
8608 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
8609 * find occurrence -occ, so we have to check [hist_ptr+occ].
8610 */
8611 hist_ptr += occ;
8612 if (hist_ptr >= MAX_HDR_HISTORY)
8613 hist_ptr -= MAX_HDR_HISTORY;
8614 *vptr = ptr_hist[hist_ptr];
8615 *vlen = len_hist[hist_ptr];
8616 return 1;
8617}
8618
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8619/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8620 * Print a debug line with a header. Always stop at the first CR or LF char,
8621 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8622 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8623 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8624void debug_hdr(const char *dir, struct stream *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8625{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8626 struct session *sess = strm_sess(s);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8627 int max;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8628
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8629 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8630 dir,
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8631 objt_conn(sess->origin) ? (unsigned short)objt_conn(sess->origin)->t.sock.fd : -1,
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]8632 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]8633
8634 for (max = 0; start + max < end; max++)
8635 if (start[max] == '\r' || start[max] == '\n')
8636 break;
8637
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8638 UBOUND(max, trash.size - trash.len - 3);
8639 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8640 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8641 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8642}
8643
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8644
8645/* Allocate a new HTTP transaction for stream <s> unless there is one already.
8646 * The hdr_idx is allocated as well. In case of allocation failure, everything
8647 * allocated is freed and NULL is returned. Otherwise the new transaction is
8648 * assigned to the stream and returned.
8649 */
8650struct http_txn *http_alloc_txn(struct stream *s)
8651{
8652 struct http_txn *txn = s->txn;
8653
8654 if (txn)
8655 return txn;
8656
8657 txn = pool_alloc2(pool2_http_txn);
8658 if (!txn)
8659 return txn;
8660
8661 txn->hdr_idx.size = global.tune.max_http_hdr;
8662 txn->hdr_idx.v = pool_alloc2(pool2_hdr_idx);
8663 if (!txn->hdr_idx.v) {
8664 pool_free2(pool2_http_txn, txn);
8665 return NULL;
8666 }
8667
8668 s->txn = txn;
8669 return txn;
8670}
8671
Thierry FOURNIERfd50f0b2015-09-25 18:53:18 +0200[diff] [blame]8672void http_txn_reset_req(struct http_txn *txn)
8673{
8674 txn->req.flags = 0;
8675 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
8676 txn->req.next = 0;
8677 txn->req.chunk_len = 0LL;
8678 txn->req.body_len = 0LL;
8679 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8680}
8681
8682void http_txn_reset_res(struct http_txn *txn)
8683{
8684 txn->rsp.flags = 0;
8685 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
8686 txn->rsp.next = 0;
8687 txn->rsp.chunk_len = 0LL;
8688 txn->rsp.body_len = 0LL;
8689 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
8690}
8691
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8692/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8693 * Initialize a new HTTP transaction for stream <s>. It is assumed that all
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8694 * the required fields are properly allocated and that we only need to (re)init
8695 * them. This should be used before processing any new request.
8696 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8697void http_init_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8698{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8699 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8700 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8701
8702 txn->flags = 0;
8703 txn->status = -1;
8704
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8705 txn->cookie_first_date = 0;
8706 txn->cookie_last_date = 0;
8707
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8708 txn->srv_cookie = NULL;
8709 txn->cli_cookie = NULL;
8710 txn->uri = NULL;
8711
Thierry FOURNIERfd50f0b2015-09-25 18:53:18 +0200[diff] [blame]8712 http_txn_reset_req(txn);
8713 http_txn_reset_res(txn);
8714
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8715 txn->req.chn = &s->req;
8716 txn->rsp.chn = &s->res;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8717
8718 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8719
8720 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8721 if (fe->options2 & PR_O2_REQBUG_OK)
8722 txn->req.err_pos = -1; /* let buggy requests pass */
8723
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8724 if (txn->hdr_idx.v)
8725 hdr_idx_init(&txn->hdr_idx);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]8726
8727 vars_init(&s->vars_txn, SCOPE_TXN);
8728 vars_init(&s->vars_reqres, SCOPE_REQ);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8729}
8730
8731/* to be used at the end of a transaction */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8732void http_end_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8733{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8734 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8735 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8736
8737 /* these ones will have been dynamically allocated */
8738 pool_free2(pool2_requri, txn->uri);
8739 pool_free2(pool2_capture, txn->cli_cookie);
8740 pool_free2(pool2_capture, txn->srv_cookie);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8741 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8742
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8743 s->unique_id = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8744 txn->uri = NULL;
8745 txn->srv_cookie = NULL;
8746 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8747
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8748 if (s->req_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8749 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8750 for (h = fe->req_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8751 pool_free2(h->pool, s->req_cap[h->index]);
8752 memset(s->req_cap, 0, fe->nb_req_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8753 }
8754
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8755 if (s->res_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8756 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8757 for (h = fe->rsp_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8758 pool_free2(h->pool, s->res_cap[h->index]);
8759 memset(s->res_cap, 0, fe->nb_rsp_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8760 }
8761
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]8762 vars_prune(&s->vars_txn, s);
8763 vars_prune(&s->vars_reqres, s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8764}
8765
8766/* to be used at the end of a transaction to prepare a new one */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8767void http_reset_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8768{
8769 http_end_txn(s);
8770 http_init_txn(s);
8771
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]8772 /* reinitialise the current rule list pointer to NULL. We are sure that
8773 * any rulelist match the NULL pointer.
8774 */
8775 s->current_rule_list = NULL;
8776
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8777 s->be = strm_fe(s);
8778 s->logs.logwait = strm_fe(s)->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8779 s->logs.level = 0;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8780 stream_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8781 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8782 /* re-init store persistence */
8783 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]8784 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8785
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8786 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8787
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8788 s->req.flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8789
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8790 /* We must trim any excess data from the response buffer, because we
8791 * may have blocked an invalid response from a server that we don't
8792 * want to accidentely forward once we disable the analysers, nor do
8793 * we want those data to come along with next response. A typical
8794 * example of such data would be from a buggy server responding to
8795 * a HEAD with some data, or sending more than the advertised
8796 * content-length.
8797 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8798 if (unlikely(s->res.buf->i))
8799 s->res.buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8800
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8801 s->req.rto = strm_fe(s)->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8802 s->req.wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8803
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8804 s->res.rto = TICK_ETERNITY;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8805 s->res.wto = strm_fe(s)->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8806
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8807 s->req.rex = TICK_ETERNITY;
8808 s->req.wex = TICK_ETERNITY;
8809 s->req.analyse_exp = TICK_ETERNITY;
8810 s->res.rex = TICK_ETERNITY;
8811 s->res.wex = TICK_ETERNITY;
8812 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8813}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8814
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8815void free_http_res_rules(struct list *r)
8816{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8817 struct act_rule *tr, *pr;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8818
8819 list_for_each_entry_safe(pr, tr, r, list) {
8820 LIST_DEL(&pr->list);
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8821 regex_free(&pr->arg.hdr_add.re);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8822 free(pr);
8823 }
8824}
8825
8826void free_http_req_rules(struct list *r)
8827{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8828 struct act_rule *tr, *pr;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8829
8830 list_for_each_entry_safe(pr, tr, r, list) {
8831 LIST_DEL(&pr->list);
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8832 if (pr->action == ACT_HTTP_REQ_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8833 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8834
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8835 regex_free(&pr->arg.hdr_add.re);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8836 free(pr);
8837 }
8838}
8839
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8840/* parse an "http-request" rule */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8841struct 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]8842{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8843 struct act_rule *rule;
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]8844 struct action_kw *custom = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8845 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8846 char *error;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8847
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8848 rule = (struct act_rule*)calloc(1, sizeof(struct act_rule));
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8849 if (!rule) {
8850 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8851 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8852 }
8853
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]8854 rule->deny_status = HTTP_ERR_403;
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8855 if (!strcmp(args[0], "allow")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8856 rule->action = ACT_ACTION_ALLOW;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8857 cur_arg = 1;
Willy Tarreau5bd67592014-04-28 22:00:46 +0200[diff] [blame]8858 } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block")) {
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]8859 int code;
8860 int hc;
8861
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8862 rule->action = ACT_ACTION_DENY;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8863 cur_arg = 1;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]8864 if (strcmp(args[cur_arg], "deny_status") == 0) {
8865 cur_arg++;
8866 if (!args[cur_arg]) {
8867 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing status code.\n",
8868 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
8869 goto out_err;
8870 }
8871
8872 code = atol(args[cur_arg]);
8873 cur_arg++;
8874 for (hc = 0; hc < HTTP_ERR_SIZE; hc++) {
8875 if (http_err_codes[hc] == code) {
8876 rule->deny_status = hc;
8877 break;
8878 }
8879 }
8880
8881 if (hc >= HTTP_ERR_SIZE) {
8882 Warning("parsing [%s:%d] : status code %d not handled, using default code 403.\n",
8883 file, linenum, code);
8884 }
8885 }
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8886 } else if (!strcmp(args[0], "tarpit")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8887 rule->action = ACT_HTTP_REQ_TARPIT;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8888 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8889 } else if (!strcmp(args[0], "auth")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8890 rule->action = ACT_HTTP_REQ_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8891 cur_arg = 1;
8892
8893 while(*args[cur_arg]) {
8894 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8895 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8896 cur_arg+=2;
8897 continue;
8898 } else
8899 break;
8900 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8901 } else if (!strcmp(args[0], "set-nice")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8902 rule->action = ACT_HTTP_SET_NICE;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8903 cur_arg = 1;
8904
8905 if (!*args[cur_arg] ||
8906 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8907 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
8908 file, linenum, args[0]);
8909 goto out_err;
8910 }
8911 rule->arg.nice = atoi(args[cur_arg]);
8912 if (rule->arg.nice < -1024)
8913 rule->arg.nice = -1024;
8914 else if (rule->arg.nice > 1024)
8915 rule->arg.nice = 1024;
8916 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8917 } else if (!strcmp(args[0], "set-tos")) {
8918#ifdef IP_TOS
8919 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8920 rule->action = ACT_HTTP_SET_TOS;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8921 cur_arg = 1;
8922
8923 if (!*args[cur_arg] ||
8924 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8925 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8926 file, linenum, args[0]);
8927 goto out_err;
8928 }
8929
8930 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8931 if (err && *err != '\0') {
8932 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8933 file, linenum, err, args[0]);
8934 goto out_err;
8935 }
8936 cur_arg++;
8937#else
8938 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8939 goto out_err;
8940#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8941 } else if (!strcmp(args[0], "set-mark")) {
8942#ifdef SO_MARK
8943 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8944 rule->action = ACT_HTTP_SET_MARK;
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8945 cur_arg = 1;
8946
8947 if (!*args[cur_arg] ||
8948 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8949 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8950 file, linenum, args[0]);
8951 goto out_err;
8952 }
8953
8954 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8955 if (err && *err != '\0') {
8956 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8957 file, linenum, err, args[0]);
8958 goto out_err;
8959 }
8960 cur_arg++;
8961 global.last_checks |= LSTCHK_NETADM;
8962#else
8963 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8964 goto out_err;
8965#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8966 } else if (!strcmp(args[0], "set-log-level")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8967 rule->action = ACT_HTTP_SET_LOGL;
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8968 cur_arg = 1;
8969
8970 if (!*args[cur_arg] ||
8971 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8972 bad_log_level:
8973 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
8974 file, linenum, args[0]);
8975 goto out_err;
8976 }
8977 if (strcmp(args[cur_arg], "silent") == 0)
8978 rule->arg.loglevel = -1;
8979 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
8980 goto bad_log_level;
8981 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8982 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8983 rule->action = *args[0] == 'a' ? ACT_HTTP_ADD_HDR : ACT_HTTP_SET_HDR;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8984 cur_arg = 1;
8985
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]8986 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8987 (*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]8988 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8989 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8990 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8991 }
8992
8993 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8994 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8995 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]8996
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8997 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]8998 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
Thierry FOURNIEReeaa9512014-02-11 14:00:19 +0100[diff] [blame]8999 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9000 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9001 free(proxy->conf.lfs_file);
9002 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9003 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9004 cur_arg += 2;
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9005 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9006 rule->action = args[0][8] == 'h' ? ACT_HTTP_REPLACE_HDR : ACT_HTTP_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9007 cur_arg = 1;
9008
9009 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann92df3702014-06-24 11:10:00 +0200[diff] [blame]9010 (*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]9011 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
9012 file, linenum, args[0]);
9013 goto out_err;
9014 }
9015
9016 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9017 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9018 LIST_INIT(&rule->arg.hdr_add.fmt);
9019
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9020 error = NULL;
9021 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9022 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9023 args[cur_arg + 1], error);
9024 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9025 goto out_err;
9026 }
9027
9028 proxy->conf.args.ctx = ARGC_HRQ;
9029 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9030 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9031 file, linenum);
9032
9033 free(proxy->conf.lfs_file);
9034 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9035 proxy->conf.lfs_line = proxy->conf.args.line;
9036 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9037 } else if (strcmp(args[0], "del-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9038 rule->action = ACT_HTTP_DEL_HDR;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9039 cur_arg = 1;
9040
9041 if (!*args[cur_arg] ||
9042 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9043 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9044 file, linenum, args[0]);
9045 goto out_err;
9046 }
9047
9048 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9049 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9050
9051 proxy->conf.args.ctx = ARGC_HRQ;
9052 free(proxy->conf.lfs_file);
9053 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9054 proxy->conf.lfs_line = proxy->conf.args.line;
9055 cur_arg += 1;
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9056 } else if (strncmp(args[0], "track-sc", 8) == 0 &&
9057 args[0][9] == '\0' && args[0][8] >= '0' &&
Willy Tarreaue1cfc1f2014-10-17 11:53:05 +0200[diff] [blame]9058 args[0][8] < '0' + MAX_SESS_STKCTR) { /* track-sc 0..9 */
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9059 struct sample_expr *expr;
9060 unsigned int where;
9061 char *err = NULL;
9062
9063 cur_arg = 1;
9064 proxy->conf.args.ctx = ARGC_TRK;
9065
9066 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9067 if (!expr) {
9068 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9069 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9070 free(err);
9071 goto out_err;
9072 }
9073
9074 where = 0;
9075 if (proxy->cap & PR_CAP_FE)
9076 where |= SMP_VAL_FE_HRQ_HDR;
9077 if (proxy->cap & PR_CAP_BE)
9078 where |= SMP_VAL_BE_HRQ_HDR;
9079
9080 if (!(expr->fetch->val & where)) {
9081 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule :"
9082 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9083 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9084 args[cur_arg-1], sample_src_names(expr->fetch->use));
9085 free(expr);
9086 goto out_err;
9087 }
9088
9089 if (strcmp(args[cur_arg], "table") == 0) {
9090 cur_arg++;
9091 if (!args[cur_arg]) {
9092 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing table name.\n",
9093 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9094 free(expr);
9095 goto out_err;
9096 }
9097 /* we copy the table name for now, it will be resolved later */
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]9098 rule->arg.trk_ctr.table.n = strdup(args[cur_arg]);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9099 cur_arg++;
9100 }
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]9101 rule->arg.trk_ctr.expr = expr;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9102 rule->action = ACT_ACTION_TRK_SC0 + args[0][8] - '0';
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9103 } else if (strcmp(args[0], "redirect") == 0) {
9104 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]9105 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9106
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9107 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]9108 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9109 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9110 goto out_err;
9111 }
9112
9113 /* this redirect rule might already contain a parsed condition which
9114 * we'll pass to the http-request rule.
9115 */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9116 rule->action = ACT_HTTP_REDIR;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9117 rule->arg.redir = redir;
9118 rule->cond = redir->cond;
9119 redir->cond = NULL;
9120 cur_arg = 2;
9121 return rule;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9122 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9123 /* http-request add-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9124 rule->action = ACT_HTTP_ADD_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9125 /*
9126 * '+ 8' for 'add-acl('
9127 * '- 9' for 'add-acl(' + trailing ')'
9128 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9129 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9130
9131 cur_arg = 1;
9132
9133 if (!*args[cur_arg] ||
9134 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9135 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9136 file, linenum, args[0]);
9137 goto out_err;
9138 }
9139
9140 LIST_INIT(&rule->arg.map.key);
9141 proxy->conf.args.ctx = ARGC_HRQ;
9142 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9143 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9144 file, linenum);
9145 free(proxy->conf.lfs_file);
9146 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9147 proxy->conf.lfs_line = proxy->conf.args.line;
9148 cur_arg += 1;
9149 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9150 /* http-request del-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9151 rule->action = ACT_HTTP_DEL_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9152 /*
9153 * '+ 8' for 'del-acl('
9154 * '- 9' for 'del-acl(' + trailing ')'
9155 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9156 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9157
9158 cur_arg = 1;
9159
9160 if (!*args[cur_arg] ||
9161 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9162 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9163 file, linenum, args[0]);
9164 goto out_err;
9165 }
9166
9167 LIST_INIT(&rule->arg.map.key);
9168 proxy->conf.args.ctx = ARGC_HRQ;
9169 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9170 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9171 file, linenum);
9172 free(proxy->conf.lfs_file);
9173 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9174 proxy->conf.lfs_line = proxy->conf.args.line;
9175 cur_arg += 1;
9176 } else if (strncmp(args[0], "del-map", 7) == 0) {
9177 /* http-request del-map(<reference (map name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9178 rule->action = ACT_HTTP_DEL_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9179 /*
9180 * '+ 8' for 'del-map('
9181 * '- 9' for 'del-map(' + trailing ')'
9182 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9183 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9184
9185 cur_arg = 1;
9186
9187 if (!*args[cur_arg] ||
9188 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9189 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9190 file, linenum, args[0]);
9191 goto out_err;
9192 }
9193
9194 LIST_INIT(&rule->arg.map.key);
9195 proxy->conf.args.ctx = ARGC_HRQ;
9196 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9197 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9198 file, linenum);
9199 free(proxy->conf.lfs_file);
9200 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9201 proxy->conf.lfs_line = proxy->conf.args.line;
9202 cur_arg += 1;
9203 } else if (strncmp(args[0], "set-map", 7) == 0) {
9204 /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9205 rule->action = ACT_HTTP_SET_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9206 /*
9207 * '+ 8' for 'set-map('
9208 * '- 9' for 'set-map(' + trailing ')'
9209 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9210 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9211
9212 cur_arg = 1;
9213
9214 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9215 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9216 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9217 file, linenum, args[0]);
9218 goto out_err;
9219 }
9220
9221 LIST_INIT(&rule->arg.map.key);
9222 LIST_INIT(&rule->arg.map.value);
9223 proxy->conf.args.ctx = ARGC_HRQ;
9224
9225 /* key pattern */
9226 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9227 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9228 file, linenum);
9229
9230 /* value pattern */
9231 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9232 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9233 file, linenum);
9234 free(proxy->conf.lfs_file);
9235 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9236 proxy->conf.lfs_line = proxy->conf.args.line;
9237
9238 cur_arg += 2;
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]9239 } else if (strncmp(args[0], "set-src", 7) == 0) {
9240 struct sample_expr *expr;
9241 unsigned int where;
9242 char *err = NULL;
9243
9244 cur_arg = 1;
9245 proxy->conf.args.ctx = ARGC_HRQ;
9246
9247 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9248 if (!expr) {
9249 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9250 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9251 free(err);
9252 goto out_err;
9253 }
9254
9255 where = 0;
9256 if (proxy->cap & PR_CAP_FE)
9257 where |= SMP_VAL_FE_HRQ_HDR;
9258 if (proxy->cap & PR_CAP_BE)
9259 where |= SMP_VAL_BE_HRQ_HDR;
9260
9261 if (!(expr->fetch->val & where)) {
9262 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule :"
9263 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9264 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9265 args[cur_arg-1], sample_src_names(expr->fetch->use));
9266 free(expr);
9267 goto out_err;
9268 }
9269
Thierry FOURNIERa002dc92015-07-31 08:50:51 +0200[diff] [blame]9270 rule->arg.expr = expr;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9271 rule->action = ACT_HTTP_REQ_SET_SRC;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9272 } else if (((custom = action_http_req_custom(args[0])) != NULL)) {
9273 char *errmsg = NULL;
9274 cur_arg = 1;
9275 /* try in the module list */
Thierry FOURNIER5563e4b2015-08-14 19:20:07 +0200[diff] [blame]9276 rule->from = ACT_F_HTTP_REQ;
Thierry FOURNIER85c6c972015-09-22 19:14:35 +0200[diff] [blame]9277 rule->kw = custom;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]9278 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) == ACT_RET_PRS_ERR) {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9279 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9280 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9281 free(errmsg);
9282 goto out_err;
9283 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9284 } else {
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9285 action_build_list(&http_req_keywords.list, &trash);
9286 Alert("parsing [%s:%d]: 'http-request' expects 'allow', 'deny', 'auth', 'redirect', "
9287 "'tarpit', 'add-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', "
9288 "'set-tos', 'set-mark', 'set-log-level', 'add-acl', 'del-acl', 'del-map', 'set-map', "
9289 "'set-src'%s%s, but got '%s'%s.\n",
9290 file, linenum, *trash.str ? ", " : "", trash.str, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9291 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9292 }
9293
9294 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9295 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9296 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9297
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9298 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9299 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
9300 file, linenum, args[0], errmsg);
9301 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9302 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9303 }
9304 rule->cond = cond;
9305 }
9306 else if (*args[cur_arg]) {
9307 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
9308 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9309 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9310 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9311 }
9312
9313 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9314 out_err:
9315 free(rule);
9316 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9317}
9318
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9319/* parse an "http-respose" rule */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9320struct 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]9321{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9322 struct act_rule *rule;
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]9323 struct action_kw *custom = NULL;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9324 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9325 char *error;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9326
9327 rule = calloc(1, sizeof(*rule));
9328 if (!rule) {
9329 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
9330 goto out_err;
9331 }
9332
9333 if (!strcmp(args[0], "allow")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9334 rule->action = ACT_ACTION_ALLOW;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9335 cur_arg = 1;
9336 } else if (!strcmp(args[0], "deny")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9337 rule->action = ACT_ACTION_DENY;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9338 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9339 } else if (!strcmp(args[0], "set-nice")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9340 rule->action = ACT_HTTP_SET_NICE;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9341 cur_arg = 1;
9342
9343 if (!*args[cur_arg] ||
9344 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9345 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
9346 file, linenum, args[0]);
9347 goto out_err;
9348 }
9349 rule->arg.nice = atoi(args[cur_arg]);
9350 if (rule->arg.nice < -1024)
9351 rule->arg.nice = -1024;
9352 else if (rule->arg.nice > 1024)
9353 rule->arg.nice = 1024;
9354 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9355 } else if (!strcmp(args[0], "set-tos")) {
9356#ifdef IP_TOS
9357 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9358 rule->action = ACT_HTTP_SET_TOS;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9359 cur_arg = 1;
9360
9361 if (!*args[cur_arg] ||
9362 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9363 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9364 file, linenum, args[0]);
9365 goto out_err;
9366 }
9367
9368 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9369 if (err && *err != '\0') {
9370 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9371 file, linenum, err, args[0]);
9372 goto out_err;
9373 }
9374 cur_arg++;
9375#else
9376 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9377 goto out_err;
9378#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9379 } else if (!strcmp(args[0], "set-mark")) {
9380#ifdef SO_MARK
9381 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9382 rule->action = ACT_HTTP_SET_MARK;
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9383 cur_arg = 1;
9384
9385 if (!*args[cur_arg] ||
9386 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9387 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9388 file, linenum, args[0]);
9389 goto out_err;
9390 }
9391
9392 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9393 if (err && *err != '\0') {
9394 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9395 file, linenum, err, args[0]);
9396 goto out_err;
9397 }
9398 cur_arg++;
9399 global.last_checks |= LSTCHK_NETADM;
9400#else
9401 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9402 goto out_err;
9403#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9404 } else if (!strcmp(args[0], "set-log-level")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9405 rule->action = ACT_HTTP_SET_LOGL;
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9406 cur_arg = 1;
9407
9408 if (!*args[cur_arg] ||
9409 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9410 bad_log_level:
9411 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
9412 file, linenum, args[0]);
9413 goto out_err;
9414 }
9415 if (strcmp(args[cur_arg], "silent") == 0)
9416 rule->arg.loglevel = -1;
9417 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
9418 goto bad_log_level;
9419 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9420 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9421 rule->action = *args[0] == 'a' ? ACT_HTTP_ADD_HDR : ACT_HTTP_SET_HDR;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9422 cur_arg = 1;
9423
9424 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9425 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9426 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9427 file, linenum, args[0]);
9428 goto out_err;
9429 }
9430
9431 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9432 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9433 LIST_INIT(&rule->arg.hdr_add.fmt);
9434
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9435 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9436 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
Thierry FOURNIEReeaa9512014-02-11 14:00:19 +0100[diff] [blame]9437 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9438 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9439 free(proxy->conf.lfs_file);
9440 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9441 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9442 cur_arg += 2;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9443 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9444 rule->action = args[0][8] == 'h' ? ACT_HTTP_REPLACE_HDR : ACT_HTTP_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9445 cur_arg = 1;
9446
9447 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann12cb00b2014-08-08 17:29:06 +0200[diff] [blame]9448 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
9449 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 3 arguments.\n",
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9450 file, linenum, args[0]);
9451 goto out_err;
9452 }
9453
9454 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9455 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9456 LIST_INIT(&rule->arg.hdr_add.fmt);
9457
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9458 error = NULL;
9459 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9460 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9461 args[cur_arg + 1], error);
9462 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9463 goto out_err;
9464 }
9465
9466 proxy->conf.args.ctx = ARGC_HRQ;
9467 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9468 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9469 file, linenum);
9470
9471 free(proxy->conf.lfs_file);
9472 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9473 proxy->conf.lfs_line = proxy->conf.args.line;
9474 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9475 } else if (strcmp(args[0], "del-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9476 rule->action = ACT_HTTP_DEL_HDR;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9477 cur_arg = 1;
9478
9479 if (!*args[cur_arg] ||
9480 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9481 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9482 file, linenum, args[0]);
9483 goto out_err;
9484 }
9485
9486 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9487 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9488
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9489 proxy->conf.args.ctx = ARGC_HRS;
9490 free(proxy->conf.lfs_file);
9491 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9492 proxy->conf.lfs_line = proxy->conf.args.line;
9493 cur_arg += 1;
9494 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9495 /* http-request add-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9496 rule->action = ACT_HTTP_ADD_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9497 /*
9498 * '+ 8' for 'add-acl('
9499 * '- 9' for 'add-acl(' + trailing ')'
9500 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9501 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9502
9503 cur_arg = 1;
9504
9505 if (!*args[cur_arg] ||
9506 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9507 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9508 file, linenum, args[0]);
9509 goto out_err;
9510 }
9511
9512 LIST_INIT(&rule->arg.map.key);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9513 proxy->conf.args.ctx = ARGC_HRS;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9514 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9515 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9516 file, linenum);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9517 free(proxy->conf.lfs_file);
9518 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9519 proxy->conf.lfs_line = proxy->conf.args.line;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9520
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9521 cur_arg += 1;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9522 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9523 /* http-response del-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9524 rule->action = ACT_HTTP_DEL_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9525 /*
9526 * '+ 8' for 'del-acl('
9527 * '- 9' for 'del-acl(' + trailing ')'
9528 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9529 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9530
9531 cur_arg = 1;
9532
9533 if (!*args[cur_arg] ||
9534 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9535 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9536 file, linenum, args[0]);
9537 goto out_err;
9538 }
9539
9540 LIST_INIT(&rule->arg.map.key);
9541 proxy->conf.args.ctx = ARGC_HRS;
9542 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9543 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9544 file, linenum);
9545 free(proxy->conf.lfs_file);
9546 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9547 proxy->conf.lfs_line = proxy->conf.args.line;
9548 cur_arg += 1;
9549 } else if (strncmp(args[0], "del-map", 7) == 0) {
9550 /* http-response del-map(<reference (map name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9551 rule->action = ACT_HTTP_DEL_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9552 /*
9553 * '+ 8' for 'del-map('
9554 * '- 9' for 'del-map(' + trailing ')'
9555 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9556 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9557
9558 cur_arg = 1;
9559
9560 if (!*args[cur_arg] ||
9561 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9562 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9563 file, linenum, args[0]);
9564 goto out_err;
9565 }
9566
9567 LIST_INIT(&rule->arg.map.key);
9568 proxy->conf.args.ctx = ARGC_HRS;
9569 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9570 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9571 file, linenum);
9572 free(proxy->conf.lfs_file);
9573 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9574 proxy->conf.lfs_line = proxy->conf.args.line;
9575 cur_arg += 1;
9576 } else if (strncmp(args[0], "set-map", 7) == 0) {
9577 /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9578 rule->action = ACT_HTTP_SET_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9579 /*
9580 * '+ 8' for 'set-map('
9581 * '- 9' for 'set-map(' + trailing ')'
9582 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9583 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9584
9585 cur_arg = 1;
9586
9587 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9588 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9589 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9590 file, linenum, args[0]);
9591 goto out_err;
9592 }
9593
9594 LIST_INIT(&rule->arg.map.key);
9595 LIST_INIT(&rule->arg.map.value);
9596
9597 proxy->conf.args.ctx = ARGC_HRS;
9598
9599 /* key pattern */
9600 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9601 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9602 file, linenum);
9603
9604 /* value pattern */
9605 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9606 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9607 file, linenum);
9608
9609 free(proxy->conf.lfs_file);
9610 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9611 proxy->conf.lfs_line = proxy->conf.args.line;
9612
9613 cur_arg += 2;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]9614 } else if (strcmp(args[0], "redirect") == 0) {
9615 struct redirect_rule *redir;
9616 char *errmsg = NULL;
9617
9618 if ((redir = http_parse_redirect_rule(file, linenum, proxy, (const char **)args + 1, &errmsg, 1, 1)) == NULL) {
9619 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9620 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9621 goto out_err;
9622 }
9623
9624 /* this redirect rule might already contain a parsed condition which
9625 * we'll pass to the http-request rule.
9626 */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9627 rule->action = ACT_HTTP_REDIR;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]9628 rule->arg.redir = redir;
9629 rule->cond = redir->cond;
9630 redir->cond = NULL;
9631 cur_arg = 2;
9632 return rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9633 } else if (((custom = action_http_res_custom(args[0])) != NULL)) {
9634 char *errmsg = NULL;
9635 cur_arg = 1;
9636 /* try in the module list */
Thierry FOURNIER5563e4b2015-08-14 19:20:07 +0200[diff] [blame]9637 rule->from = ACT_F_HTTP_RES;
Thierry FOURNIER85c6c972015-09-22 19:14:35 +0200[diff] [blame]9638 rule->kw = custom;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]9639 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) == ACT_RET_PRS_ERR) {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9640 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9641 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9642 free(errmsg);
9643 goto out_err;
9644 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9645 } else {
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9646 action_build_list(&http_res_keywords.list, &trash);
9647 Alert("parsing [%s:%d]: 'http-response' expects 'allow', 'deny', 'redirect', "
9648 "'add-header', 'del-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', "
9649 "'set-tos', 'set-mark', 'set-log-level', 'add-acl', 'del-acl', 'del-map', 'set-map', "
9650 "'set-src'%s%s, but got '%s'%s.\n",
9651 file, linenum, *trash.str ? ", " : "", trash.str, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9652 goto out_err;
9653 }
9654
9655 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9656 struct acl_cond *cond;
9657 char *errmsg = NULL;
9658
9659 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9660 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
9661 file, linenum, args[0], errmsg);
9662 free(errmsg);
9663 goto out_err;
9664 }
9665 rule->cond = cond;
9666 }
9667 else if (*args[cur_arg]) {
9668 Alert("parsing [%s:%d]: 'http-response %s' expects"
9669 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9670 file, linenum, args[0], args[cur_arg]);
9671 goto out_err;
9672 }
9673
9674 return rule;
9675 out_err:
9676 free(rule);
9677 return NULL;
9678}
9679
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9680/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9681 * 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]9682 * dynamic log-format rule instead of a static string. Parameter <dir> indicates
9683 * the direction of the rule, and equals 0 for request, non-zero for responses.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9684 */
9685struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9686 const char **args, char **errmsg, int use_fmt, int dir)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9687{
9688 struct redirect_rule *rule;
9689 int cur_arg;
9690 int type = REDIRECT_TYPE_NONE;
9691 int code = 302;
9692 const char *destination = NULL;
9693 const char *cookie = NULL;
9694 int cookie_set = 0;
9695 unsigned int flags = REDIRECT_FLAG_NONE;
9696 struct acl_cond *cond = NULL;
9697
9698 cur_arg = 0;
9699 while (*(args[cur_arg])) {
9700 if (strcmp(args[cur_arg], "location") == 0) {
9701 if (!*args[cur_arg + 1])
9702 goto missing_arg;
9703
9704 type = REDIRECT_TYPE_LOCATION;
9705 cur_arg++;
9706 destination = args[cur_arg];
9707 }
9708 else if (strcmp(args[cur_arg], "prefix") == 0) {
9709 if (!*args[cur_arg + 1])
9710 goto missing_arg;
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9711 type = REDIRECT_TYPE_PREFIX;
9712 cur_arg++;
9713 destination = args[cur_arg];
9714 }
9715 else if (strcmp(args[cur_arg], "scheme") == 0) {
9716 if (!*args[cur_arg + 1])
9717 goto missing_arg;
9718
9719 type = REDIRECT_TYPE_SCHEME;
9720 cur_arg++;
9721 destination = args[cur_arg];
9722 }
9723 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
9724 if (!*args[cur_arg + 1])
9725 goto missing_arg;
9726
9727 cur_arg++;
9728 cookie = args[cur_arg];
9729 cookie_set = 1;
9730 }
9731 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
9732 if (!*args[cur_arg + 1])
9733 goto missing_arg;
9734
9735 cur_arg++;
9736 cookie = args[cur_arg];
9737 cookie_set = 0;
9738 }
9739 else if (strcmp(args[cur_arg], "code") == 0) {
9740 if (!*args[cur_arg + 1])
9741 goto missing_arg;
9742
9743 cur_arg++;
9744 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9745 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9746 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9747 "'%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]9748 args[cur_arg - 1], args[cur_arg]);
9749 return NULL;
9750 }
9751 }
9752 else if (!strcmp(args[cur_arg],"drop-query")) {
9753 flags |= REDIRECT_FLAG_DROP_QS;
9754 }
9755 else if (!strcmp(args[cur_arg],"append-slash")) {
9756 flags |= REDIRECT_FLAG_APPEND_SLASH;
9757 }
9758 else if (strcmp(args[cur_arg], "if") == 0 ||
9759 strcmp(args[cur_arg], "unless") == 0) {
9760 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
9761 if (!cond) {
9762 memprintf(errmsg, "error in condition: %s", *errmsg);
9763 return NULL;
9764 }
9765 break;
9766 }
9767 else {
9768 memprintf(errmsg,
9769 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
9770 args[cur_arg]);
9771 return NULL;
9772 }
9773 cur_arg++;
9774 }
9775
9776 if (type == REDIRECT_TYPE_NONE) {
9777 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
9778 return NULL;
9779 }
9780
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9781 if (dir && type != REDIRECT_TYPE_LOCATION) {
9782 memprintf(errmsg, "response only supports redirect type 'location'");
9783 return NULL;
9784 }
9785
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9786 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
9787 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]9788 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9789
9790 if (!use_fmt) {
9791 /* old-style static redirect rule */
9792 rule->rdr_str = strdup(destination);
9793 rule->rdr_len = strlen(destination);
9794 }
9795 else {
9796 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9797
9798 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
9799 * if prefix == "/", we don't want to add anything, otherwise it
9800 * makes it hard for the user to configure a self-redirection.
9801 */
Godbachd9722032014-12-18 15:44:58 +0800[diff] [blame]9802 curproxy->conf.args.ctx = ARGC_RDR;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9803 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9804 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9805 dir ? (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRS_HDR : SMP_VAL_BE_HRS_HDR
9806 : (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
Thierry FOURNIEReeaa9512014-02-11 14:00:19 +0100[diff] [blame]9807 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9808 free(curproxy->conf.lfs_file);
9809 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
9810 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9811 }
9812 }
9813
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9814 if (cookie) {
9815 /* depending on cookie_set, either we want to set the cookie, or to clear it.
9816 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
9817 */
9818 rule->cookie_len = strlen(cookie);
9819 if (cookie_set) {
9820 rule->cookie_str = malloc(rule->cookie_len + 10);
9821 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9822 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
9823 rule->cookie_len += 9;
9824 } else {
9825 rule->cookie_str = malloc(rule->cookie_len + 21);
9826 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9827 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
9828 rule->cookie_len += 20;
9829 }
9830 }
9831 rule->type = type;
9832 rule->code = code;
9833 rule->flags = flags;
9834 LIST_INIT(&rule->list);
9835 return rule;
9836
9837 missing_arg:
9838 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
9839 return NULL;
9840}
9841
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9842/************************************************************************/
9843/* The code below is dedicated to ACL parsing and matching */
9844/************************************************************************/
9845
9846
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9847/* This function ensures that the prerequisites for an L7 fetch are ready,
9848 * which means that a request or response is ready. If some data is missing,
9849 * 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]9850 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
9851 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9852 *
9853 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9854 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
9855 * decide whether or not an HTTP message is present ;
9856 * 0 if the requested data cannot be fetched or if it is certain that
9857 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9858 * 1 if an HTTP message is ready
9859 */
James Rosewell91a41cb2015-09-18 17:11:16 +0100[diff] [blame]9860int smp_prefetch_http(struct proxy *px, struct stream *s, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9861 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9862{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9863 struct http_txn *txn;
9864 struct http_msg *msg;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9865
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]9866 /* Note: this function may only be used from places where
9867 * http_init_txn() has already been done, and implies that <s>,
9868 * <txn>, and <hdr_idx.v> are properly set. An extra check protects
9869 * against an eventual mistake in the fetch capability matrix.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9870 */
9871
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9872 if (!s)
9873 return 0;
Thierry FOURNIERed08d6a2015-09-24 08:40:18 +0200[diff] [blame]9874 if (!s->txn) {
9875 if (unlikely(!http_alloc_txn(s)))
9876 return 0; /* not enough memory */
9877 http_init_txn(s);
9878 }
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9879 txn = s->txn;
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9880 msg = &txn->req;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9881
9882 /* Check for a dependency on a request */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9883 smp->data.type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9884
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9885 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9886 /* If the buffer does not leave enough free space at the end,
9887 * we must first realign it.
9888 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9889 if (s->req.buf->p > s->req.buf->data &&
9890 s->req.buf->i + s->req.buf->p > s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)
9891 buffer_slow_realign(s->req.buf);
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9892
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9893 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]9894 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9895 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9896
9897 /* Try to decode HTTP request */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9898 if (likely(msg->next < s->req.buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9899 http_msg_analyzer(msg, &txn->hdr_idx);
9900
9901 /* Still no valid request ? */
9902 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]9903 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9904 buffer_full(s->req.buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9905 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9906 }
9907 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9908 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9909 return 0;
9910 }
9911
9912 /* OK we just got a valid HTTP request. We have some minor
9913 * preparation to perform so that further checks can rely
9914 * on HTTP tests.
9915 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9916
9917 /* If the request was parsed but was too large, we must absolutely
9918 * return an error so that it is not processed. At the moment this
9919 * cannot happen, but if the parsers are to change in the future,
9920 * we want this check to be maintained.
9921 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9922 if (unlikely(s->req.buf->i + s->req.buf->p >
9923 s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9924 msg->msg_state = HTTP_MSG_ERROR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9925 smp->data.u.sint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9926 return 1;
9927 }
9928
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9929 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9930 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]9931 s->flags |= SF_REDIRECTABLE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9932
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9933 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
9934 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9935 }
9936
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9937 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9938 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9939 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9940
9941 /* otherwise everything's ready for the request */
9942 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9943 else {
9944 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9945 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
9946 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9947 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9948 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9949 }
9950
9951 /* everything's OK */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9952 smp->data.u.sint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9953 return 1;
9954}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9955
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9956/* 1. Check on METHOD
9957 * We use the pre-parsed method if it is known, and store its number as an
9958 * integer. If it is unknown, we use the pointer and the length.
9959 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]9960static int pat_parse_meth(const char *text, struct pattern *pattern, int mflags, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9961{
9962 int len, meth;
9963
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]9964 len = strlen(text);
9965 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9966
9967 pattern->val.i = meth;
9968 if (meth == HTTP_METH_OTHER) {
Willy Tarreau912c1192014-08-29 15:15:50 +0200[diff] [blame]9969 pattern->ptr.str = (char *)text;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9970 pattern->len = len;
9971 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9972 else {
9973 pattern->ptr.str = NULL;
9974 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9975 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9976 return 1;
9977}
9978
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9979/* This function fetches the method of current HTTP request and stores
9980 * it in the global pattern struct as a chunk. There are two possibilities :
9981 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
9982 * in <len> and <ptr> is NULL ;
9983 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
9984 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9985 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9986 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9987static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9988smp_fetch_meth(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9989{
9990 int meth;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]9991 struct http_txn *txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9992
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9993 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9994
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9995 meth = txn->meth;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9996 smp->data.type = SMP_T_METH;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9997 smp->data.u.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9998 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9999 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
10000 /* ensure the indexes are not affected */
10001 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10002 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10003 smp->data.u.meth.str.len = txn->req.sl.rq.m_l;
10004 smp->data.u.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10005 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10006 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10007 return 1;
10008}
10009
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10010/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10011static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10012{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10013 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10014 struct pattern_list *lst;
10015 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10016
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10017 list_for_each_entry(lst, &expr->patterns, list) {
10018 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10019
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10020 /* well-known method */
10021 if (pattern->val.i != HTTP_METH_OTHER) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10022 if (smp->data.u.meth.meth == pattern->val.i)
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10023 return pattern;
10024 else
10025 continue;
10026 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10027
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10028 /* Other method, we must compare the strings */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10029 if (pattern->len != smp->data.u.meth.str.len)
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10030 continue;
10031
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]10032 icase = expr->mflags & PAT_MF_IGNORE_CASE;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10033 if ((icase && strncasecmp(pattern->ptr.str, smp->data.u.meth.str.str, smp->data.u.meth.str.len) == 0) ||
10034 (!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]10035 return pattern;
10036 }
10037 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10038}
10039
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10040static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10041smp_fetch_rqver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10042{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10043 struct http_txn *txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10044 char *ptr;
10045 int len;
10046
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10047 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10048
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10049 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10050 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10051
10052 while ((len-- > 0) && (*ptr++ != '/'));
10053 if (len <= 0)
10054 return 0;
10055
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10056 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10057 smp->data.u.str.str = ptr;
10058 smp->data.u.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10059
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10060 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10061 return 1;
10062}
10063
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10064static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10065smp_fetch_stver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10066{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10067 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10068 char *ptr;
10069 int len;
10070
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10071 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10072
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10073 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10074 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10075 return 0;
10076
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10077 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10078 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10079
10080 while ((len-- > 0) && (*ptr++ != '/'));
10081 if (len <= 0)
10082 return 0;
10083
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10084 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10085 smp->data.u.str.str = ptr;
10086 smp->data.u.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10087
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10088 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10089 return 1;
10090}
10091
10092/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10093static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10094smp_fetch_stcode(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10095{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10096 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10097 char *ptr;
10098 int len;
10099
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10100 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10101
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10102 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10103 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10104 return 0;
10105
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10106 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10107 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10108
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10109 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10110 smp->data.u.sint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10111 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10112 return 1;
10113}
10114
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10115/* returns the longest available part of the body. This requires that the body
10116 * has been waited for using http-buffer-request.
10117 */
10118static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10119smp_fetch_body(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10120{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10121 struct http_txn *txn = smp->strm->txn;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10122 struct http_msg *msg;
10123 unsigned long len;
10124 unsigned long block1;
10125 char *body;
10126 struct chunk *temp;
10127
10128 CHECK_HTTP_MESSAGE_FIRST();
10129
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10130 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10131 msg = &txn->req;
10132 else
10133 msg = &txn->rsp;
10134
10135 len = http_body_bytes(msg);
10136 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
10137
10138 block1 = len;
10139 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
10140 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
10141
10142 if (block1 == len) {
10143 /* buffer is not wrapped (or empty) */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10144 smp->data.type = SMP_T_BIN;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10145 smp->data.u.str.str = body;
10146 smp->data.u.str.len = len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10147 smp->flags = SMP_F_VOL_TEST | SMP_F_CONST;
10148 }
10149 else {
10150 /* buffer is wrapped, we need to defragment it */
10151 temp = get_trash_chunk();
10152 memcpy(temp->str, body, block1);
10153 memcpy(temp->str + block1, msg->chn->buf->data, len - block1);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10154 smp->data.type = SMP_T_BIN;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10155 smp->data.u.str.str = temp->str;
10156 smp->data.u.str.len = len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10157 smp->flags = SMP_F_VOL_TEST;
10158 }
10159 return 1;
10160}
10161
10162
10163/* returns the available length of the body. This requires that the body
10164 * has been waited for using http-buffer-request.
10165 */
10166static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10167smp_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]10168{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10169 struct http_txn *txn = smp->strm->txn;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10170 struct http_msg *msg;
10171
10172 CHECK_HTTP_MESSAGE_FIRST();
10173
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10174 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10175 msg = &txn->req;
10176 else
10177 msg = &txn->rsp;
10178
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10179 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10180 smp->data.u.sint = http_body_bytes(msg);
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10181
10182 smp->flags = SMP_F_VOL_TEST;
10183 return 1;
10184}
10185
10186
10187/* returns the advertised length of the body, or the advertised size of the
10188 * chunks available in the buffer. This requires that the body has been waited
10189 * for using http-buffer-request.
10190 */
10191static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10192smp_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]10193{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10194 struct http_txn *txn = smp->strm->txn;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10195 struct http_msg *msg;
10196
10197 CHECK_HTTP_MESSAGE_FIRST();
10198
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10199 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10200 msg = &txn->req;
10201 else
10202 msg = &txn->rsp;
10203
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10204 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10205 smp->data.u.sint = msg->body_len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10206
10207 smp->flags = SMP_F_VOL_TEST;
10208 return 1;
10209}
10210
10211
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10212/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10213static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10214smp_fetch_url(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10215{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10216 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10217
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10218 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10219
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10220 txn = smp->strm->txn;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10221 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10222 smp->data.u.str.len = txn->req.sl.rq.u_l;
10223 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]10224 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10225 return 1;
10226}
10227
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10228static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10229smp_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]10230{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10231 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10232 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10233
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10234 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10235
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10236 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10237 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]10238 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]10239 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10240
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10241 smp->data.type = SMP_T_IPV4;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10242 smp->data.u.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10243 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10244 return 1;
10245}
10246
10247static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10248smp_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]10249{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10250 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10251 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10252
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10253 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10254
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10255 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10256 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]10257 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
10258 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10259
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10260 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10261 smp->data.u.sint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]10262 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10263 return 1;
10264}
10265
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10266/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10267 * Accepts an optional argument of type string containing the header field name,
10268 * and an optional argument of type signed or unsigned integer to request an
10269 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10270 * headers are considered from the first one. It does not stop on commas and
10271 * returns full lines instead (useful for User-Agent or Date for example).
10272 */
10273static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10274smp_fetch_fhdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10275{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10276 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10277 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10278 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10279 int occ = 0;
10280 const char *name_str = NULL;
10281 int name_len = 0;
10282
10283 if (!ctx) {
10284 /* first call */
10285 ctx = &static_hdr_ctx;
10286 ctx->idx = 0;
10287 smp->ctx.a[0] = ctx;
10288 }
10289
10290 if (args) {
10291 if (args[0].type != ARGT_STR)
10292 return 0;
10293 name_str = args[0].data.str.str;
10294 name_len = args[0].data.str.len;
10295
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10296 if (args[1].type == ARGT_SINT)
10297 occ = args[1].data.sint;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10298 }
10299
10300 CHECK_HTTP_MESSAGE_FIRST();
10301
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10302 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10303 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]10304
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10305 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
10306 /* search for header from the beginning */
10307 ctx->idx = 0;
10308
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10309 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10310 /* no explicit occurrence and single fetch => last header by default */
10311 occ = -1;
10312
10313 if (!occ)
10314 /* prepare to report multiple occurrences for ACL fetches */
10315 smp->flags |= SMP_F_NOT_LAST;
10316
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10317 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10318 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10319 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]10320 return 1;
10321
10322 smp->flags &= ~SMP_F_NOT_LAST;
10323 return 0;
10324}
10325
10326/* 6. Check on HTTP header count. The number of occurrences is returned.
10327 * Accepts exactly 1 argument of type string. It does not stop on commas and
10328 * returns full lines instead (useful for User-Agent or Date for example).
10329 */
10330static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10331smp_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]10332{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10333 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10334 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10335 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10336 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10337 const char *name = NULL;
10338 int len = 0;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10339
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10340 if (args && args->type == ARGT_STR) {
10341 name = args->data.str.str;
10342 len = args->data.str.len;
10343 }
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10344
10345 CHECK_HTTP_MESSAGE_FIRST();
10346
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10347 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10348 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]10349
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10350 ctx.idx = 0;
10351 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10352 while (http_find_full_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10353 cnt++;
10354
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10355 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10356 smp->data.u.sint = cnt;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10357 smp->flags = SMP_F_VOL_HDR;
10358 return 1;
10359}
10360
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10361static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10362smp_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]10363{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10364 struct hdr_idx *idx;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10365 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10366 const struct http_msg *msg;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10367 struct chunk *temp;
10368 char del = ',';
10369
10370 if (args && args->type == ARGT_STR)
10371 del = *args[0].data.str.str;
10372
10373 CHECK_HTTP_MESSAGE_FIRST();
10374
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10375 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10376 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]10377
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10378 temp = get_trash_chunk();
10379
10380 ctx.idx = 0;
10381 while (http_find_next_header(msg->chn->buf->p, idx, &ctx)) {
10382 if (temp->len)
10383 temp->str[temp->len++] = del;
10384 memcpy(temp->str + temp->len, ctx.line, ctx.del);
10385 temp->len += ctx.del;
10386 }
10387
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10388 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10389 smp->data.u.str.str = temp->str;
10390 smp->data.u.str.len = temp->len;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10391 smp->flags = SMP_F_VOL_HDR;
10392 return 1;
10393}
10394
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10395/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10396 * Accepts an optional argument of type string containing the header field name,
10397 * and an optional argument of type signed or unsigned integer to request an
10398 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10399 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10400 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10401static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10402smp_fetch_hdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10403{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10404 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10405 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10406 const struct http_msg *msg;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10407 int occ = 0;
10408 const char *name_str = NULL;
10409 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10410
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10411 if (!ctx) {
10412 /* first call */
10413 ctx = &static_hdr_ctx;
10414 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]10415 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10416 }
10417
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10418 if (args) {
10419 if (args[0].type != ARGT_STR)
10420 return 0;
10421 name_str = args[0].data.str.str;
10422 name_len = args[0].data.str.len;
10423
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10424 if (args[1].type == ARGT_SINT)
10425 occ = args[1].data.sint;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10426 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10427
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10428 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10429
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10430 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10431 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]10432
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10433 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10434 /* search for header from the beginning */
10435 ctx->idx = 0;
10436
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10437 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10438 /* no explicit occurrence and single fetch => last header by default */
10439 occ = -1;
10440
10441 if (!occ)
10442 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10443 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]10444
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10445 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10446 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10447 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]10448 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10449
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10450 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10451 return 0;
10452}
10453
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10454/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10455 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10456 */
10457static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10458smp_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]10459{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10460 struct hdr_idx *idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10461 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10462 const struct http_msg *msg;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10463 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10464 const char *name = NULL;
10465 int len = 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10466
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10467 if (args && args->type == ARGT_STR) {
10468 name = args->data.str.str;
10469 len = args->data.str.len;
10470 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10471
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10472 CHECK_HTTP_MESSAGE_FIRST();
10473
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10474 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10475 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]10476
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10477 ctx.idx = 0;
10478 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10479 while (http_find_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10480 cnt++;
10481
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10482 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10483 smp->data.u.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10484 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10485 return 1;
10486}
10487
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10488/* Fetch an HTTP header's integer value. The integer value is returned. It
10489 * takes a mandatory argument of type string and an optional one of type int
10490 * to designate a specific occurrence. It returns an unsigned integer, which
10491 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10492 */
10493static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10494smp_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]10495{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10496 int ret = smp_fetch_hdr(args, smp, kw, private);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10497
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10498 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10499 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10500 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]10501 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10502
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10503 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10504}
10505
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10506/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
10507 * and an optional one of type int to designate a specific occurrence.
10508 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10509 */
10510static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10511smp_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]10512{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10513 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10514
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10515 while ((ret = smp_fetch_hdr(args, smp, kw, private)) > 0) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10516 if (url2ipv4((char *)smp->data.u.str.str, &smp->data.u.ipv4)) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10517 smp->data.type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10518 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10519 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10520 struct chunk *temp = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10521 if (smp->data.u.str.len < temp->size - 1) {
10522 memcpy(temp->str, smp->data.u.str.str, smp->data.u.str.len);
10523 temp->str[smp->data.u.str.len] = '\0';
10524 if (inet_pton(AF_INET6, temp->str, &smp->data.u.ipv6)) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10525 smp->data.type = SMP_T_IPV6;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10526 break;
10527 }
10528 }
10529 }
10530
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10531 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10532 if (!(smp->flags & SMP_F_NOT_LAST))
10533 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10534 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10535 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10536}
10537
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10538/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
10539 * the first '/' after the possible hostname, and ends before the possible '?'.
10540 */
10541static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10542smp_fetch_path(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10543{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10544 struct http_txn *txn;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10545 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10546
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10547 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10548
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10549 txn = smp->strm->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10550 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]10551 ptr = http_get_path(txn);
10552 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10553 return 0;
10554
10555 /* OK, we got the '/' ! */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10556 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10557 smp->data.u.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10558
10559 while (ptr < end && *ptr != '?')
10560 ptr++;
10561
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10562 smp->data.u.str.len = ptr - smp->data.u.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10563 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10564 return 1;
10565}
10566
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10567/* This produces a concatenation of the first occurrence of the Host header
10568 * followed by the path component if it begins with a slash ('/'). This means
10569 * that '*' will not be added, resulting in exactly the first Host entry.
10570 * If no Host header is found, then the path is returned as-is. The returned
10571 * 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]10572 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10573 */
10574static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10575smp_fetch_base(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10576{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10577 struct http_txn *txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10578 char *ptr, *end, *beg;
10579 struct hdr_ctx ctx;
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10580 struct chunk *temp;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10581
10582 CHECK_HTTP_MESSAGE_FIRST();
10583
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10584 txn = smp->strm->txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10585 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10586 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]10587 return smp_fetch_path(args, smp, kw, private);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10588
10589 /* 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]10590 temp = get_trash_chunk();
10591 memcpy(temp->str, ctx.line + ctx.val, ctx.vlen);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10592 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10593 smp->data.u.str.str = temp->str;
10594 smp->data.u.str.len = ctx.vlen;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10595
10596 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10597 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]10598 beg = http_get_path(txn);
10599 if (!beg)
10600 beg = end;
10601
10602 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10603
10604 if (beg < ptr && *beg == '/') {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10605 memcpy(smp->data.u.str.str + smp->data.u.str.len, beg, ptr - beg);
10606 smp->data.u.str.len += ptr - beg;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10607 }
10608
10609 smp->flags = SMP_F_VOL_1ST;
10610 return 1;
10611}
10612
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10613/* This produces a 32-bit hash of the concatenation of the first occurrence of
10614 * the Host header followed by the path component if it begins with a slash ('/').
10615 * This means that '*' will not be added, resulting in exactly the first Host
10616 * 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]10617 * is hashed using the path hash followed by a full avalanche hash and provides a
10618 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10619 * high-traffic sites without having to store whole paths.
10620 */
Thierry FOURNIER055b9d52014-07-15 16:11:07 +0200[diff] [blame]10621int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10622smp_fetch_base32(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10623{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10624 struct http_txn *txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10625 struct hdr_ctx ctx;
10626 unsigned int hash = 0;
10627 char *ptr, *beg, *end;
10628 int len;
10629
10630 CHECK_HTTP_MESSAGE_FIRST();
10631
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10632 txn = smp->strm->txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10633 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10634 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]10635 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10636 ptr = ctx.line + ctx.val;
10637 len = ctx.vlen;
10638 while (len--)
10639 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10640 }
10641
10642 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10643 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]10644 beg = http_get_path(txn);
10645 if (!beg)
10646 beg = end;
10647
10648 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10649
10650 if (beg < ptr && *beg == '/') {
10651 while (beg < ptr)
10652 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10653 }
10654 hash = full_hash(hash);
10655
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10656 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10657 smp->data.u.sint = hash;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10658 smp->flags = SMP_F_VOL_1ST;
10659 return 1;
10660}
10661
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10662/* 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]10663 * path as returned by smp_fetch_base32(). The idea is to have per-source and
10664 * per-path counters. The result is a binary block from 8 to 20 bytes depending
10665 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10666 * that in environments where IPv6 is insignificant, truncating the output to
10667 * 8 bytes would still work.
10668 */
10669static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10670smp_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]10671{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10672 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10673 struct connection *cli_conn = objt_conn(smp->sess->origin);
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10674
10675 if (!cli_conn)
10676 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10677
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10678 if (!smp_fetch_base32(args, smp, kw, private))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10679 return 0;
10680
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10681 temp = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10682 *(unsigned int *)temp->str = htonl(smp->data.u.sint);
Willy Tarreau5ad6e1d2014-07-15 21:34:06 +0200[diff] [blame]10683 temp->len += sizeof(unsigned int);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10684
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10685 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10686 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10687 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]10688 temp->len += 4;
10689 break;
10690 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10691 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]10692 temp->len += 16;
10693 break;
10694 default:
10695 return 0;
10696 }
10697
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10698 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10699 smp->data.type = SMP_T_BIN;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10700 return 1;
10701}
10702
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10703/* Extracts the query string, which comes after the question mark '?'. If no
10704 * question mark is found, nothing is returned. Otherwise it returns a sample
10705 * of type string carrying the whole query string.
10706 */
10707static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10708smp_fetch_query(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10709{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10710 struct http_txn *txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10711 char *ptr, *end;
10712
10713 CHECK_HTTP_MESSAGE_FIRST();
10714
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10715 txn = smp->strm->txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10716 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
10717 end = ptr + txn->req.sl.rq.u_l;
10718
10719 /* look up the '?' */
10720 do {
10721 if (ptr == end)
10722 return 0;
10723 } while (*ptr++ != '?');
10724
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10725 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10726 smp->data.u.str.str = ptr;
10727 smp->data.u.str.len = end - ptr;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10728 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
10729 return 1;
10730}
10731
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10732static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10733smp_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]10734{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10735 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
10736 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
10737 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10738
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10739 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10740
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10741 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10742 smp->data.u.sint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10743 return 1;
10744}
10745
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10746/* return a valid test if the current request is the first one on the connection */
10747static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10748smp_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]10749{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10750 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10751 smp->data.u.sint = !(smp->strm->txn->flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10752 return 1;
10753}
10754
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10755/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10756static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10757smp_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]10758{
10759
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10760 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10761 return 0;
10762
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10763 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10764
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10765 if (!get_http_auth(smp->strm))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10766 return 0;
10767
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10768 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10769 smp->data.u.sint = check_user(args->data.usr, smp->strm->txn->auth.user,
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10770 smp->strm->txn->auth.pass);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10771 return 1;
10772}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10773
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10774/* Accepts exactly 1 argument of type userlist */
10775static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10776smp_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]10777{
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10778 if (!args || args->type != ARGT_USR)
10779 return 0;
10780
10781 CHECK_HTTP_MESSAGE_FIRST();
10782
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10783 if (!get_http_auth(smp->strm))
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10784 return 0;
10785
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10786 /* if the user does not belong to the userlist or has a wrong password,
10787 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10788 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10789 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10790 if (!check_user(args->data.usr, smp->strm->txn->auth.user,
10791 smp->strm->txn->auth.pass))
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10792 return 0;
10793
10794 /* pat_match_auth() will need the user list */
10795 smp->ctx.a[0] = args->data.usr;
10796
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10797 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10798 smp->flags = SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10799 smp->data.u.str.str = smp->strm->txn->auth.user;
10800 smp->data.u.str.len = strlen(smp->strm->txn->auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10801
10802 return 1;
10803}
10804
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10805/* Try to find the next occurrence of a cookie name in a cookie header value.
10806 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
10807 * the cookie value is returned into *value and *value_l, and the function
10808 * returns a pointer to the next pointer to search from if the value was found.
10809 * Otherwise if the cookie was not found, NULL is returned and neither value
10810 * nor value_l are touched. The input <hdr> string should first point to the
10811 * header's value, and the <hdr_end> pointer must point to the first character
10812 * not part of the value. <list> must be non-zero if value may represent a list
10813 * of values (cookie headers). This makes it faster to abort parsing when no
10814 * list is expected.
10815 */
David Carlier4686f792015-09-25 14:10:50 +0100[diff] [blame]10816char *
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10817extract_cookie_value(char *hdr, const char *hdr_end,
10818 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]10819 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10820{
10821 char *equal, *att_end, *att_beg, *val_beg, *val_end;
10822 char *next;
10823
10824 /* we search at least a cookie name followed by an equal, and more
10825 * generally something like this :
10826 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
10827 */
10828 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
10829 /* Iterate through all cookies on this line */
10830
10831 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
10832 att_beg++;
10833
10834 /* find att_end : this is the first character after the last non
10835 * space before the equal. It may be equal to hdr_end.
10836 */
10837 equal = att_end = att_beg;
10838
10839 while (equal < hdr_end) {
10840 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
10841 break;
10842 if (http_is_spht[(unsigned char)*equal++])
10843 continue;
10844 att_end = equal;
10845 }
10846
10847 /* here, <equal> points to '=', a delimitor or the end. <att_end>
10848 * is between <att_beg> and <equal>, both may be identical.
10849 */
10850
10851 /* look for end of cookie if there is an equal sign */
10852 if (equal < hdr_end && *equal == '=') {
10853 /* look for the beginning of the value */
10854 val_beg = equal + 1;
10855 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
10856 val_beg++;
10857
10858 /* find the end of the value, respecting quotes */
10859 next = find_cookie_value_end(val_beg, hdr_end);
10860
10861 /* make val_end point to the first white space or delimitor after the value */
10862 val_end = next;
10863 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
10864 val_end--;
10865 } else {
10866 val_beg = val_end = next = equal;
10867 }
10868
10869 /* We have nothing to do with attributes beginning with '$'. However,
10870 * they will automatically be removed if a header before them is removed,
10871 * since they're supposed to be linked together.
10872 */
10873 if (*att_beg == '$')
10874 continue;
10875
10876 /* Ignore cookies with no equal sign */
10877 if (equal == next)
10878 continue;
10879
10880 /* Now we have the cookie name between att_beg and att_end, and
10881 * its value between val_beg and val_end.
10882 */
10883
10884 if (att_end - att_beg == cookie_name_l &&
10885 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
10886 /* let's return this value and indicate where to go on from */
10887 *value = val_beg;
10888 *value_l = val_end - val_beg;
10889 return next + 1;
10890 }
10891
10892 /* Set-Cookie headers only have the name in the first attr=value part */
10893 if (!list)
10894 break;
10895 }
10896
10897 return NULL;
10898}
10899
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10900/* Fetch a captured HTTP request header. The index is the position of
10901 * the "capture" option in the configuration file
10902 */
10903static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10904smp_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]10905{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10906 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10907 int idx;
10908
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10909 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10910 return 0;
10911
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10912 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10913
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10914 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]10915 return 0;
10916
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10917 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10918 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10919 smp->data.u.str.str = smp->strm->req_cap[idx];
10920 smp->data.u.str.len = strlen(smp->strm->req_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10921
10922 return 1;
10923}
10924
10925/* Fetch a captured HTTP response header. The index is the position of
10926 * the "capture" option in the configuration file
10927 */
10928static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10929smp_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]10930{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10931 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10932 int idx;
10933
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10934 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10935 return 0;
10936
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10937 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10938
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10939 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]10940 return 0;
10941
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10942 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10943 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10944 smp->data.u.str.str = smp->strm->res_cap[idx];
10945 smp->data.u.str.len = strlen(smp->strm->res_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10946
10947 return 1;
10948}
10949
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10950/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
10951static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10952smp_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]10953{
10954 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10955 struct http_txn *txn = smp->strm->txn;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10956 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10957
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10958 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10959 return 0;
10960
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10961 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10962
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10963 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10964 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10965
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10966 temp = get_trash_chunk();
10967 temp->str = txn->uri;
10968 temp->len = ptr - txn->uri;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10969 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10970 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10971 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10972
10973 return 1;
10974
10975}
10976
10977/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
10978static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10979smp_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]10980{
10981 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10982 struct http_txn *txn = smp->strm->txn;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10983 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10984
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10985 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10986 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10987
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10988 ptr = txn->uri;
10989
10990 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10991 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10992
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10993 if (!*ptr)
10994 return 0;
10995
10996 ptr++; /* skip the space */
10997
10998 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10999 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11000 if (!ptr)
11001 return 0;
11002 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
11003 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11004
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11005 smp->data.u.str = *temp;
11006 smp->data.u.str.len = ptr - temp->str;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11007 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11008 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11009
11010 return 1;
11011}
11012
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11013/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
11014 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11015 */
11016static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11017smp_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]11018{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11019 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11020
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11021 if (!txn || txn->req.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11022 return 0;
11023
11024 if (txn->req.flags & HTTP_MSGF_VER_11)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11025 smp->data.u.str.str = "HTTP/1.1";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11026 else
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11027 smp->data.u.str.str = "HTTP/1.0";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11028
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11029 smp->data.u.str.len = 8;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11030 smp->data.type = SMP_T_STR;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11031 smp->flags = SMP_F_CONST;
11032 return 1;
11033
11034}
11035
11036/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
11037 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11038 */
11039static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11040smp_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]11041{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11042 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11043
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11044 if (!txn || txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11045 return 0;
11046
11047 if (txn->rsp.flags & HTTP_MSGF_VER_11)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11048 smp->data.u.str.str = "HTTP/1.1";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11049 else
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11050 smp->data.u.str.str = "HTTP/1.0";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11051
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11052 smp->data.u.str.len = 8;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11053 smp->data.type = SMP_T_STR;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11054 smp->flags = SMP_F_CONST;
11055 return 1;
11056
11057}
11058
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11059
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11060/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11061 * 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]11062 * 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]11063 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11064 * 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]11065 * Accepts exactly 1 argument of type string. If the input options indicate
11066 * that no iterating is desired, then only last value is fetched if any.
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]11067 * The returned sample is of type CSTR. Can be used to parse cookies in other
11068 * files.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11069 */
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11070int 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]11071{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11072 struct http_txn *txn;
11073 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11074 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11075 const struct http_msg *msg;
11076 const char *hdr_name;
11077 int hdr_name_len;
11078 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11079 int occ = 0;
11080 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11081
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11082 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11083 return 0;
11084
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11085 if (!ctx) {
11086 /* first call */
11087 ctx = &static_hdr_ctx;
11088 ctx->idx = 0;
11089 smp->ctx.a[2] = ctx;
11090 }
11091
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11092 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11093
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11094 txn = smp->strm->txn;
11095 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11096
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11097 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11098 msg = &txn->req;
11099 hdr_name = "Cookie";
11100 hdr_name_len = 6;
11101 } else {
11102 msg = &txn->rsp;
11103 hdr_name = "Set-Cookie";
11104 hdr_name_len = 10;
11105 }
11106
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11107 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11108 /* no explicit occurrence and single fetch => last cookie by default */
11109 occ = -1;
11110
11111 /* OK so basically here, either we want only one value and it's the
11112 * last one, or we want to iterate over all of them and we fetch the
11113 * next one.
11114 */
11115
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11116 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11117 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11118 /* search for the header from the beginning, we must first initialize
11119 * the search parameters.
11120 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11121 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11122 ctx->idx = 0;
11123 }
11124
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11125 smp->flags |= SMP_F_VOL_HDR;
11126
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11127 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11128 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
11129 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11130 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
11131 goto out;
11132
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11133 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11134 continue;
11135
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11136 smp->ctx.a[0] = ctx->line + ctx->val;
11137 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11138 }
11139
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11140 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11141 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11142 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]11143 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11144 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11145 &smp->data.u.str.str,
11146 &smp->data.u.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11147 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11148 found = 1;
11149 if (occ >= 0) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11150 /* one value was returned into smp->data.u.str.{str,len} */
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11151 smp->flags |= SMP_F_NOT_LAST;
11152 return 1;
11153 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11154 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11155 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11156 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11157 /* all cookie headers and values were scanned. If we're looking for the
11158 * last occurrence, we may return it now.
11159 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11160 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11161 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11162 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11163}
11164
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11165/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11166 * 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]11167 * multiple cookies may be parsed on the same line. The returned sample is of
11168 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11169 */
11170static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11171smp_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]11172{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11173 struct http_txn *txn;
11174 struct hdr_idx *idx;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11175 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11176 const struct http_msg *msg;
11177 const char *hdr_name;
11178 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11179 int cnt;
11180 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11181 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11182
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11183 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11184 return 0;
11185
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11186 CHECK_HTTP_MESSAGE_FIRST();
11187
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11188 txn = smp->strm->txn;
11189 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11190
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11191 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11192 msg = &txn->req;
11193 hdr_name = "Cookie";
11194 hdr_name_len = 6;
11195 } else {
11196 msg = &txn->rsp;
11197 hdr_name = "Set-Cookie";
11198 hdr_name_len = 10;
11199 }
11200
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11201 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]11202 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11203 ctx.idx = 0;
11204 cnt = 0;
11205
11206 while (1) {
11207 /* Note: val_beg == NULL every time we need to fetch a new header */
11208 if (!val_beg) {
11209 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
11210 break;
11211
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11212 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11213 continue;
11214
11215 val_beg = ctx.line + ctx.val;
11216 val_end = val_beg + ctx.vlen;
11217 }
11218
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11219 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11220 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11221 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11222 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11223 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11224 &smp->data.u.str.str,
11225 &smp->data.u.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11226 cnt++;
11227 }
11228 }
11229
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11230 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11231 smp->data.u.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11232 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11233 return 1;
11234}
11235
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11236/* Fetch an cookie's integer value. The integer value is returned. It
11237 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
11238 */
11239static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11240smp_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]11241{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11242 int ret = smp_fetch_cookie(args, smp, kw, private);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11243
11244 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11245 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11246 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]11247 }
11248
11249 return ret;
11250}
11251
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11252/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]11253/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11254/************************************************************************/
11255
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11256/*
11257 * Given a path string and its length, find the position of beginning of the
11258 * query string. Returns NULL if no query string is found in the path.
11259 *
11260 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
11261 *
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11262 * find_query_string(path, n, '?') points to "yo=mama;ye=daddy" string.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11263 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11264static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11265{
11266 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]11267
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11268 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11269 return p ? p + 1 : NULL;
11270}
11271
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11272static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11273{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11274 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11275}
11276
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11277/* after increasing a pointer value, it can exceed the first buffer
11278 * size. This function transform the value of <ptr> according with
11279 * the expected position. <chunks> is an array of the one or two
11280 * avalaible chunks. The first value is the start of the first chunk,
11281 * the second value if the end+1 of the first chunks. The third value
11282 * is NULL or the start of the second chunk and the fourth value is
11283 * the end+1 of the second chunk. The function returns 1 if does a
11284 * wrap, else returns 0.
11285 */
11286static inline int fix_pointer_if_wrap(const char **chunks, const char **ptr)
11287{
11288 if (*ptr < chunks[1])
11289 return 0;
11290 if (!chunks[2])
11291 return 0;
11292 *ptr = chunks[2] + ( *ptr - chunks[1] );
11293 return 1;
11294}
11295
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11296/*
11297 * Given a url parameter, find the starting position of the first occurence,
11298 * or NULL if the parameter is not found.
11299 *
11300 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
11301 * the function will return query_string+8.
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11302 *
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11303 * Warning: this function returns a pointer that can point to the first chunk
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11304 * or the second chunk. The caller must be check the position before using the
11305 * result.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11306 */
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11307static const char *
11308find_url_param_pos(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11309 const char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11310 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11311{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11312 const char *pos, *last, *equal;
11313 const char **bufs = chunks;
11314 int l1, l2;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11315
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11316
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11317 pos = bufs[0];
11318 last = bufs[1];
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11319 while (pos < last) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11320 /* Check the equal. */
11321 equal = pos + url_param_name_l;
11322 if (fix_pointer_if_wrap(chunks, &equal)) {
11323 if (equal >= chunks[3])
11324 return NULL;
11325 } else {
11326 if (equal >= chunks[1])
11327 return NULL;
11328 }
11329 if (*equal == '=') {
11330 if (pos + url_param_name_l > last) {
11331 /* process wrap case, we detect a wrap. In this case, the
11332 * comparison is performed in two parts.
11333 */
11334
11335 /* This is the end, we dont have any other chunk. */
11336 if (bufs != chunks || !bufs[2])
11337 return NULL;
11338
11339 /* Compute the length of each part of the comparison. */
11340 l1 = last - pos;
11341 l2 = url_param_name_l - l1;
11342
11343 /* The second buffer is too short to contain the compared string. */
11344 if (bufs[2] + l2 > bufs[3])
11345 return NULL;
11346
11347 if (memcmp(pos, url_param_name, l1) == 0 &&
11348 memcmp(bufs[2], url_param_name+l1, l2) == 0)
11349 return pos;
11350
11351 /* Perform wrapping and jump the string who fail the comparison. */
11352 bufs += 2;
11353 pos = bufs[0] + l2;
11354 last = bufs[1];
11355
11356 } else {
11357 /* process a simple comparison. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11358 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
11359 return pos;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11360 pos += url_param_name_l + 1;
11361 if (fix_pointer_if_wrap(chunks, &pos))
11362 last = bufs[2];
11363 }
11364 }
11365
11366 while (1) {
11367 /* Look for the next delimiter. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11368 while (pos < last && !is_param_delimiter(*pos, delim))
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11369 pos++;
11370 if (pos < last)
11371 break;
11372 /* process buffer wrapping. */
11373 if (bufs != chunks || !bufs[2])
11374 return NULL;
11375 bufs += 2;
11376 pos = bufs[0];
11377 last = bufs[1];
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11378 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11379 pos++;
11380 }
11381 return NULL;
11382}
11383
11384/*
Cyril Bontéce1ef4d2015-11-26 21:39:56 +0100[diff] [blame]11385 * Given a url parameter name and a query string, find the next value.
11386 * An empty url_param_name matches the first available parameter.
11387 * If the parameter is found, 1 is returned and *vstart / *vend are updated to
11388 * respectively provide a pointer to the value and its end.
11389 * Otherwise, 0 is returned and vstart/vend are not modified.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11390 */
11391static int
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11392find_next_url_param(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11393 const char* url_param_name, size_t url_param_name_l,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11394 const char **vstart, const char **vend, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11395{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11396 const char *arg_start, *qs_end;
11397 const char *value_start, *value_end;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11398
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11399 arg_start = chunks[0];
11400 qs_end = chunks[1];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11401 if (url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11402 /* Looks for an argument name. */
11403 arg_start = find_url_param_pos(chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11404 url_param_name, url_param_name_l,
11405 delim);
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11406 /* Check for wrapping. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11407 if (arg_start >= qs_end)
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11408 qs_end = chunks[3];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11409 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11410 if (!arg_start)
11411 return 0;
11412
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11413 if (!url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11414 while (1) {
11415 /* looks for the first argument. */
11416 value_start = memchr(arg_start, '=', qs_end - arg_start);
11417 if (!value_start) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11418 /* Check for wrapping. */
11419 if (arg_start >= chunks[0] &&
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11420 arg_start < chunks[1] &&
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11421 chunks[2]) {
11422 arg_start = chunks[2];
11423 qs_end = chunks[3];
11424 continue;
11425 }
11426 return 0;
11427 }
11428 break;
11429 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11430 value_start++;
11431 }
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11432 else {
11433 /* Jump the argument length. */
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11434 value_start = arg_start + url_param_name_l + 1;
11435
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11436 /* Check for pointer wrapping. */
11437 if (fix_pointer_if_wrap(chunks, &value_start)) {
11438 /* Update the end pointer. */
11439 qs_end = chunks[3];
11440
11441 /* Check for overflow. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11442 if (value_start >= qs_end)
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11443 return 0;
11444 }
11445 }
11446
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11447 value_end = value_start;
11448
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11449 while (1) {
11450 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
11451 value_end++;
11452 if (value_end < qs_end)
11453 break;
11454 /* process buffer wrapping. */
11455 if (value_end >= chunks[0] &&
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11456 value_end < chunks[1] &&
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11457 chunks[2]) {
11458 value_end = chunks[2];
11459 qs_end = chunks[3];
11460 continue;
11461 }
11462 break;
11463 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11464
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11465 *vstart = value_start;
11466 *vend = value_end;
Cyril Bontéce1ef4d2015-11-26 21:39:56 +0100[diff] [blame]11467 return 1;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11468}
11469
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11470/* This scans a URL-encoded query string. It takes an optionally wrapping
11471 * string whose first contigous chunk has its beginning in ctx->a[0] and end
11472 * in ctx->a[1], and the optional second part in (ctx->a[2]..ctx->a[3]). The
11473 * pointers are updated for next iteration before leaving.
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11474 */
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11475static int
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11476smp_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]11477{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11478 const char *vstart, *vend;
11479 struct chunk *temp;
11480 const char **chunks = (const char **)smp->ctx.a;
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11481
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11482 if (!find_next_url_param(chunks,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11483 name, name_len,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11484 &vstart, &vend,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11485 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11486 return 0;
11487
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11488 /* Create sample. If the value is contiguous, return the pointer as CONST,
11489 * if the value is wrapped, copy-it in a buffer.
11490 */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11491 smp->data.type = SMP_T_STR;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11492 if (chunks[2] &&
11493 vstart >= chunks[0] && vstart <= chunks[1] &&
11494 vend >= chunks[2] && vend <= chunks[3]) {
11495 /* Wrapped case. */
11496 temp = get_trash_chunk();
11497 memcpy(temp->str, vstart, chunks[1] - vstart);
11498 memcpy(temp->str + ( chunks[1] - vstart ), chunks[2], vend - chunks[2]);
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11499 smp->data.u.str.str = temp->str;
11500 smp->data.u.str.len = ( chunks[1] - vstart ) + ( vend - chunks[2] );
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11501 } else {
11502 /* Contiguous case. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11503 smp->data.u.str.str = (char *)vstart;
11504 smp->data.u.str.len = vend - vstart;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11505 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
11506 }
11507
11508 /* Update context, check wrapping. */
11509 chunks[0] = vend;
11510 if (chunks[2] && vend >= chunks[2] && vend <= chunks[3]) {
11511 chunks[1] = chunks[3];
11512 chunks[2] = NULL;
11513 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11514
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11515 if (chunks[0] < chunks[1])
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11516 smp->flags |= SMP_F_NOT_LAST;
11517
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11518 return 1;
11519}
11520
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11521/* This function iterates over each parameter of the query string. It uses
11522 * 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]11523 * parameter. Since it uses smp_fetch_param(), ctx->a[2..3] are both NULL.
11524 * An optional parameter name is passed in args[0], otherwise any parameter is
11525 * considered. It supports an optional delimiter argument for the beginning of
11526 * the string in args[1], which defaults to "?".
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11527 */
11528static int
11529smp_fetch_url_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11530{
11531 struct http_msg *msg;
11532 char delim = '?';
11533 const char *name;
11534 int name_len;
11535
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11536 if (!args ||
11537 (args[0].type && args[0].type != ARGT_STR) ||
11538 (args[1].type && args[1].type != ARGT_STR))
11539 return 0;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11540
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11541 name = "";
11542 name_len = 0;
11543 if (args->type == ARGT_STR) {
11544 name = args->data.str.str;
11545 name_len = args->data.str.len;
11546 }
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11547
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11548 if (args[1].type)
11549 delim = *args[1].data.str.str;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11550
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11551 if (!smp->ctx.a[0]) { // first call, find the query string
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11552 CHECK_HTTP_MESSAGE_FIRST();
11553
11554 msg = &smp->strm->txn->req;
11555
11556 smp->ctx.a[0] = find_param_list(msg->chn->buf->p + msg->sl.rq.u,
11557 msg->sl.rq.u_l, delim);
11558 if (!smp->ctx.a[0])
11559 return 0;
11560
11561 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]11562
11563 /* Assume that the context is filled with NULL pointer
11564 * before the first call.
11565 * smp->ctx.a[2] = NULL;
11566 * smp->ctx.a[3] = NULL;
11567 */
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11568 }
11569
11570 return smp_fetch_param(delim, name, name_len, args, smp, kw, private);
11571}
11572
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11573/* This function iterates over each parameter of the body. This requires
11574 * that the body has been waited for using http-buffer-request. It uses
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11575 * ctx->a[0] and ctx->a[1] to store the beginning and end of the first
11576 * contigous part of the body, and optionally ctx->a[2..3] to reference the
11577 * optional second part if the body wraps at the end of the buffer. An optional
11578 * parameter name is passed in args[0], otherwise any parameter is considered.
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11579 */
11580static int
11581smp_fetch_body_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11582{
11583 struct http_txn *txn = smp->strm->txn;
11584 struct http_msg *msg;
11585 unsigned long len;
11586 unsigned long block1;
11587 char *body;
11588 const char *name;
11589 int name_len;
11590
11591 if (!args || (args[0].type && args[0].type != ARGT_STR))
11592 return 0;
11593
11594 name = "";
11595 name_len = 0;
11596 if (args[0].type == ARGT_STR) {
11597 name = args[0].data.str.str;
11598 name_len = args[0].data.str.len;
11599 }
11600
11601 if (!smp->ctx.a[0]) { // first call, find the query string
11602 CHECK_HTTP_MESSAGE_FIRST();
11603
11604 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
11605 msg = &txn->req;
11606 else
11607 msg = &txn->rsp;
11608
11609 len = http_body_bytes(msg);
11610 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
11611
11612 block1 = len;
11613 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
11614 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
11615
11616 if (block1 == len) {
11617 /* buffer is not wrapped (or empty) */
11618 smp->ctx.a[0] = body;
11619 smp->ctx.a[1] = body + len;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11620
11621 /* Assume that the context is filled with NULL pointer
11622 * before the first call.
11623 * smp->ctx.a[2] = NULL;
11624 * smp->ctx.a[3] = NULL;
11625 */
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11626 }
11627 else {
11628 /* buffer is wrapped, we need to defragment it */
11629 smp->ctx.a[0] = body;
11630 smp->ctx.a[1] = body + block1;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11631 smp->ctx.a[2] = msg->chn->buf->data;
11632 smp->ctx.a[3] = msg->chn->buf->data + ( len - block1 );
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11633 }
11634 }
11635 return smp_fetch_param('&', name, name_len, args, smp, kw, private);
11636}
11637
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11638/* Return the signed integer value for the specified url parameter (see url_param
11639 * above).
11640 */
11641static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11642smp_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]11643{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11644 int ret = smp_fetch_url_param(args, smp, kw, private);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11645
11646 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11647 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11648 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]11649 }
11650
11651 return ret;
11652}
11653
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11654/* This produces a 32-bit hash of the concatenation of the first occurrence of
11655 * the Host header followed by the path component if it begins with a slash ('/').
11656 * This means that '*' will not be added, resulting in exactly the first Host
11657 * entry. If no Host header is found, then the path is used. The resulting value
11658 * is hashed using the url hash followed by a full avalanche hash and provides a
11659 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
11660 * high-traffic sites without having to store whole paths.
11661 * this differs from the base32 functions in that it includes the url parameters
11662 * as well as the path
11663 */
11664static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11665smp_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]11666{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11667 struct http_txn *txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11668 struct hdr_ctx ctx;
11669 unsigned int hash = 0;
11670 char *ptr, *beg, *end;
11671 int len;
11672
11673 CHECK_HTTP_MESSAGE_FIRST();
11674
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11675 txn = smp->strm->txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11676 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11677 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]11678 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
11679 ptr = ctx.line + ctx.val;
11680 len = ctx.vlen;
11681 while (len--)
11682 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
11683 }
11684
11685 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11686 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]11687 beg = http_get_path(txn);
11688 if (!beg)
11689 beg = end;
11690
11691 for (ptr = beg; ptr < end ; ptr++);
11692
11693 if (beg < ptr && *beg == '/') {
11694 while (beg < ptr)
11695 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
11696 }
11697 hash = full_hash(hash);
11698
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11699 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11700 smp->data.u.sint = hash;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11701 smp->flags = SMP_F_VOL_1ST;
11702 return 1;
11703}
11704
11705/* This concatenates the source address with the 32-bit hash of the Host and
11706 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
11707 * per-url counters. The result is a binary block from 8 to 20 bytes depending
11708 * on the source address length. The URL hash is stored before the address so
11709 * that in environments where IPv6 is insignificant, truncating the output to
11710 * 8 bytes would still work.
11711 */
11712static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11713smp_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]11714{
11715 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11716 struct connection *cli_conn = objt_conn(smp->sess->origin);
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11717 unsigned int hash;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11718
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11719 if (!smp_fetch_url32(args, smp, kw, private))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11720 return 0;
11721
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11722 /* The returned hash is a 32 bytes integer. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11723 hash = smp->data.u.sint;
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11724
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11725 temp = get_trash_chunk();
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11726 memcpy(temp->str + temp->len, &hash, sizeof(hash));
11727 temp->len += sizeof(hash);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11728
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11729 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11730 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11731 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]11732 temp->len += 4;
11733 break;
11734 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11735 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]11736 temp->len += 16;
11737 break;
11738 default:
11739 return 0;
11740 }
11741
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11742 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11743 smp->data.type = SMP_T_BIN;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11744 return 1;
11745}
11746
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11747/* This function is used to validate the arguments passed to any "hdr" fetch
11748 * keyword. These keywords support an optional positive or negative occurrence
11749 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
11750 * is assumed that the types are already the correct ones. Returns 0 on error,
11751 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
11752 * error message in case of error, that the caller is responsible for freeing.
11753 * The initial location must either be freeable or NULL.
11754 */
Thierry FOURNIER49f45af2014-12-08 19:50:43 +0100[diff] [blame]11755int val_hdr(struct arg *arg, char **err_msg)
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11756{
11757 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]11758 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11759 return 0;
11760 }
11761 return 1;
11762}
11763
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11764/* takes an UINT value on input supposed to represent the time since EPOCH,
11765 * adds an optional offset found in args[0] and emits a string representing
11766 * the date in RFC-1123/5322 format.
11767 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11768static int sample_conv_http_date(const struct arg *args, struct sample *smp, void *private)
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11769{
Cyril Bontéf78d8962016-01-22 19:40:28 +0100[diff] [blame]11770 const char day[7][4] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11771 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
11772 struct chunk *temp;
11773 struct tm *tm;
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11774 /* 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]11775 time_t curr_date = smp->data.u.sint & 0x007fffffffffffffLL;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11776
11777 /* add offset */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11778 if (args && (args[0].type == ARGT_SINT))
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11779 curr_date += args[0].data.sint;
11780
11781 tm = gmtime(&curr_date);
Thierry FOURNIERfac9ccf2015-07-08 00:15:20 +0200[diff] [blame]11782 if (!tm)
11783 return 0;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11784
11785 temp = get_trash_chunk();
11786 temp->len = snprintf(temp->str, temp->size - temp->len,
11787 "%s, %02d %s %04d %02d:%02d:%02d GMT",
11788 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
11789 tm->tm_hour, tm->tm_min, tm->tm_sec);
11790
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11791 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11792 smp->data.type = SMP_T_STR;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11793 return 1;
11794}
11795
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11796/* Match language range with language tag. RFC2616 14.4:
11797 *
11798 * A language-range matches a language-tag if it exactly equals
11799 * the tag, or if it exactly equals a prefix of the tag such
11800 * that the first tag character following the prefix is "-".
11801 *
11802 * Return 1 if the strings match, else return 0.
11803 */
11804static inline int language_range_match(const char *range, int range_len,
11805 const char *tag, int tag_len)
11806{
11807 const char *end = range + range_len;
11808 const char *tend = tag + tag_len;
11809 while (range < end) {
11810 if (*range == '-' && tag == tend)
11811 return 1;
11812 if (*range != *tag || tag == tend)
11813 return 0;
11814 range++;
11815 tag++;
11816 }
11817 /* Return true only if the last char of the tag is matched. */
11818 return tag == tend;
11819}
11820
11821/* Arguments: The list of expected value, the number of parts returned and the separator */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11822static int sample_conv_q_prefered(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11823{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11824 const char *al = smp->data.u.str.str;
11825 const char *end = al + smp->data.u.str.len;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11826 const char *token;
11827 int toklen;
11828 int qvalue;
11829 const char *str;
11830 const char *w;
11831 int best_q = 0;
11832
11833 /* Set the constant to the sample, because the output of the
11834 * function will be peek in the constant configuration string.
11835 */
11836 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11837 smp->data.u.str.size = 0;
11838 smp->data.u.str.str = "";
11839 smp->data.u.str.len = 0;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11840
11841 /* Parse the accept language */
11842 while (1) {
11843
11844 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11845 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11846 al++;
11847 if (al >= end)
11848 break;
11849
11850 /* Start of the fisrt word. */
11851 token = al;
11852
11853 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11854 while (al < end && *al != ';' && *al != ',' && !isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11855 al++;
11856 if (al == token)
11857 goto expect_comma;
11858
11859 /* Length of the token. */
11860 toklen = al - token;
11861 qvalue = 1000;
11862
11863 /* Check if the token exists in the list. If the token not exists,
11864 * jump to the next token.
11865 */
11866 str = args[0].data.str.str;
11867 w = str;
11868 while (1) {
11869 if (*str == ';' || *str == '\0') {
11870 if (language_range_match(token, toklen, w, str-w))
11871 goto look_for_q;
11872 if (*str == '\0')
11873 goto expect_comma;
11874 w = str + 1;
11875 }
11876 str++;
11877 }
11878 goto expect_comma;
11879
11880look_for_q:
11881
11882 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11883 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11884 al++;
11885 if (al >= end)
11886 goto process_value;
11887
11888 /* If ',' is found, process the result */
11889 if (*al == ',')
11890 goto process_value;
11891
11892 /* If the character is different from ';', look
11893 * for the end of the header part in best effort.
11894 */
11895 if (*al != ';')
11896 goto expect_comma;
11897
11898 /* Assumes that the char is ';', now expect "q=". */
11899 al++;
11900
11901 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11902 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11903 al++;
11904 if (al >= end)
11905 goto process_value;
11906
11907 /* Expect 'q'. If no 'q', continue in best effort */
11908 if (*al != 'q')
11909 goto process_value;
11910 al++;
11911
11912 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11913 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11914 al++;
11915 if (al >= end)
11916 goto process_value;
11917
11918 /* Expect '='. If no '=', continue in best effort */
11919 if (*al != '=')
11920 goto process_value;
11921 al++;
11922
11923 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11924 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11925 al++;
11926 if (al >= end)
11927 goto process_value;
11928
11929 /* Parse the q value. */
11930 qvalue = parse_qvalue(al, &al);
11931
11932process_value:
11933
11934 /* If the new q value is the best q value, then store the associated
11935 * language in the response. If qvalue is the biggest value (1000),
11936 * break the process.
11937 */
11938 if (qvalue > best_q) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11939 smp->data.u.str.str = (char *)w;
11940 smp->data.u.str.len = str - w;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11941 if (qvalue >= 1000)
11942 break;
11943 best_q = qvalue;
11944 }
11945
11946expect_comma:
11947
11948 /* Expect comma or end. If the end is detected, quit the loop. */
11949 while (al < end && *al != ',')
11950 al++;
11951 if (al >= end)
11952 break;
11953
11954 /* Comma is found, jump it and restart the analyzer. */
11955 al++;
11956 }
11957
11958 /* Set default value if required. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11959 if (smp->data.u.str.len == 0 && args[1].type == ARGT_STR) {
11960 smp->data.u.str.str = args[1].data.str.str;
11961 smp->data.u.str.len = args[1].data.str.len;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11962 }
11963
11964 /* Return true only if a matching language was found. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11965 return smp->data.u.str.len != 0;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11966}
11967
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]11968/* This fetch url-decode any input string. */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11969static int sample_conv_url_dec(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]11970{
11971 /* If the constant flag is set or if not size is avalaible at
11972 * the end of the buffer, copy the string in other buffer
11973 * before decoding.
11974 */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11975 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]11976 struct chunk *str = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11977 memcpy(str->str, smp->data.u.str.str, smp->data.u.str.len);
11978 smp->data.u.str.str = str->str;
11979 smp->data.u.str.size = str->size;
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]11980 smp->flags &= ~SMP_F_CONST;
11981 }
11982
11983 /* Add final \0 required by url_decode(), and convert the input string. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11984 smp->data.u.str.str[smp->data.u.str.len] = '\0';
11985 smp->data.u.str.len = url_decode(smp->data.u.str.str);
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]11986 return 1;
11987}
11988
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11989static int smp_conv_req_capture(const struct arg *args, struct sample *smp, void *private)
11990{
11991 struct proxy *fe = strm_fe(smp->strm);
11992 int idx, i;
11993 struct cap_hdr *hdr;
11994 int len;
11995
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11996 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11997 return 0;
11998
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11999 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12000
12001 /* Check the availibity of the capture id. */
12002 if (idx > fe->nb_req_cap - 1)
12003 return 0;
12004
12005 /* Look for the original configuration. */
12006 for (hdr = fe->req_cap, i = fe->nb_req_cap - 1;
12007 hdr != NULL && i != idx ;
12008 i--, hdr = hdr->next);
12009 if (!hdr)
12010 return 0;
12011
12012 /* check for the memory allocation */
12013 if (smp->strm->req_cap[hdr->index] == NULL)
12014 smp->strm->req_cap[hdr->index] = pool_alloc2(hdr->pool);
12015 if (smp->strm->req_cap[hdr->index] == NULL)
12016 return 0;
12017
12018 /* Check length. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12019 len = smp->data.u.str.len;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12020 if (len > hdr->len)
12021 len = hdr->len;
12022
12023 /* Capture input data. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12024 memcpy(smp->strm->req_cap[idx], smp->data.u.str.str, len);
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12025 smp->strm->req_cap[idx][len] = '\0';
12026
12027 return 1;
12028}
12029
12030static int smp_conv_res_capture(const struct arg *args, struct sample *smp, void *private)
12031{
12032 struct proxy *fe = strm_fe(smp->strm);
12033 int idx, i;
12034 struct cap_hdr *hdr;
12035 int len;
12036
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12037 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12038 return 0;
12039
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12040 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12041
12042 /* Check the availibity of the capture id. */
12043 if (idx > fe->nb_rsp_cap - 1)
12044 return 0;
12045
12046 /* Look for the original configuration. */
12047 for (hdr = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
12048 hdr != NULL && i != idx ;
12049 i--, hdr = hdr->next);
12050 if (!hdr)
12051 return 0;
12052
12053 /* check for the memory allocation */
12054 if (smp->strm->res_cap[hdr->index] == NULL)
12055 smp->strm->res_cap[hdr->index] = pool_alloc2(hdr->pool);
12056 if (smp->strm->res_cap[hdr->index] == NULL)
12057 return 0;
12058
12059 /* Check length. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12060 len = smp->data.u.str.len;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12061 if (len > hdr->len)
12062 len = hdr->len;
12063
12064 /* Capture input data. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12065 memcpy(smp->strm->res_cap[idx], smp->data.u.str.str, len);
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12066 smp->strm->res_cap[idx][len] = '\0';
12067
12068 return 1;
12069}
12070
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12071/* This function executes one of the set-{method,path,query,uri} actions. It
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12072 * takes the string from the variable 'replace' with length 'len', then modifies
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12073 * the relevant part of the request line accordingly. Then it updates various
12074 * pointers to the next elements which were moved, and the total buffer length.
12075 * It finds the action to be performed in p[2], previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12076 * parse_set_req_line(). It returns 0 in case of success, -1 in case of internal
12077 * error, though this can be revisited when this code is finally exploited.
12078 *
12079 * 'action' can be '0' to replace method, '1' to replace path, '2' to replace
12080 * query string and 3 to replace uri.
12081 *
12082 * In query string case, the mark question '?' must be set at the start of the
12083 * string by the caller, event if the replacement query string is empty.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12084 */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12085int http_replace_req_line(int action, const char *replace, int len,
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12086 struct proxy *px, struct stream *s)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12087{
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12088 struct http_txn *txn = s->txn;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12089 char *cur_ptr, *cur_end;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12090 int offset = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12091 int delta;
12092
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12093 switch (action) {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12094 case 0: // method
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12095 cur_ptr = s->req.buf->p;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12096 cur_end = cur_ptr + txn->req.sl.rq.m_l;
12097
12098 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12099 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12100 txn->req.sl.rq.m_l += delta;
12101 txn->req.sl.rq.u += delta;
12102 txn->req.sl.rq.v += delta;
12103 break;
12104
12105 case 1: // path
12106 cur_ptr = http_get_path(txn);
12107 if (!cur_ptr)
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12108 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12109
12110 cur_end = cur_ptr;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12111 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]12112 cur_end++;
12113
12114 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12115 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12116 txn->req.sl.rq.u_l += delta;
12117 txn->req.sl.rq.v += delta;
12118 break;
12119
12120 case 2: // query
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12121 offset = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12122 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12123 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12124 while (cur_ptr < cur_end && *cur_ptr != '?')
12125 cur_ptr++;
12126
12127 /* skip the question mark or indicate that we must insert it
12128 * (but only if the format string is not empty then).
12129 */
12130 if (cur_ptr < cur_end)
12131 cur_ptr++;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12132 else if (len > 1)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12133 offset = 0;
12134
12135 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12136 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12137 txn->req.sl.rq.u_l += delta;
12138 txn->req.sl.rq.v += delta;
12139 break;
12140
12141 case 3: // uri
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12142 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12143 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12144
12145 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12146 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12147 txn->req.sl.rq.u_l += delta;
12148 txn->req.sl.rq.v += delta;
12149 break;
12150
12151 default:
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12152 return -1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12153 }
12154
12155 /* commit changes and adjust end of message */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12156 delta = buffer_replace2(s->req.buf, cur_ptr, cur_end, replace + offset, len - offset);
Thierry FOURNIER7f6192c2015-04-26 18:01:40 +0200[diff] [blame]12157 txn->req.sl.rq.l += delta;
12158 txn->hdr_idx.v[0].len += delta;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12159 http_msg_move_end(&txn->req, delta);
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12160 return 0;
12161}
12162
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12163/* This function replace the HTTP status code and the associated message. The
12164 * variable <status> contains the new status code. This function never fails.
12165 */
12166void http_set_status(unsigned int status, struct stream *s)
12167{
12168 struct http_txn *txn = s->txn;
12169 char *cur_ptr, *cur_end;
12170 int delta;
12171 char *res;
12172 int c_l;
12173 const char *msg;
12174 int msg_len;
12175
12176 chunk_reset(&trash);
12177
12178 res = ultoa_o(status, trash.str, trash.size);
12179 c_l = res - trash.str;
12180
12181 trash.str[c_l] = ' ';
12182 trash.len = c_l + 1;
12183
12184 msg = get_reason(status);
12185 msg_len = strlen(msg);
12186
12187 strncpy(&trash.str[trash.len], msg, trash.size - trash.len);
12188 trash.len += msg_len;
12189
12190 cur_ptr = s->res.buf->p + txn->rsp.sl.st.c;
12191 cur_end = s->res.buf->p + txn->rsp.sl.st.r + txn->rsp.sl.st.r_l;
12192
12193 /* commit changes and adjust message */
12194 delta = buffer_replace2(s->res.buf, cur_ptr, cur_end, trash.str, trash.len);
12195
12196 /* adjust res line offsets and lengths */
12197 txn->rsp.sl.st.r += c_l - txn->rsp.sl.st.c_l;
12198 txn->rsp.sl.st.c_l = c_l;
12199 txn->rsp.sl.st.r_l = msg_len;
12200
12201 delta = trash.len - (cur_end - cur_ptr);
12202 txn->rsp.sl.st.l += delta;
12203 txn->hdr_idx.v[0].len += delta;
12204 http_msg_move_end(&txn->rsp, delta);
12205}
12206
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12207/* This function executes one of the set-{method,path,query,uri} actions. It
12208 * builds a string in the trash from the specified format string. It finds
Thierry FOURNIER3f4bc652015-08-26 16:23:34 +0200[diff] [blame]12209 * the action to be performed in <http.action>, previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12210 * parse_set_req_line(). The replacement action is excuted by the function
Thierry FOURNIER3f4bc652015-08-26 16:23:34 +0200[diff] [blame]12211 * http_action_set_req_line(). It always returns ACT_RET_CONT. If an error
12212 * occurs the action is canceled, but the rule processing continue.
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12213 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12214enum act_return http_action_set_req_line(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12215 struct session *sess, struct stream *s, int flags)
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12216{
12217 chunk_reset(&trash);
12218
12219 /* If we have to create a query string, prepare a '?'. */
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12220 if (rule->arg.http.action == 2)
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12221 trash.str[trash.len++] = '?';
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12222 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]12223
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12224 http_replace_req_line(rule->arg.http.action, trash.str, trash.len, px, s);
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12225 return ACT_RET_CONT;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12226}
12227
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12228/* This function is just a compliant action wrapper for "set-status". */
12229enum act_return action_http_set_status(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12230 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12231{
12232 http_set_status(rule->arg.status.code, s);
12233 return ACT_RET_CONT;
12234}
12235
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12236/* parse an http-request action among :
12237 * set-method
12238 * set-path
12239 * set-query
12240 * set-uri
12241 *
12242 * All of them accept a single argument of type string representing a log-format.
12243 * The resulting rule makes use of arg->act.p[0..1] to store the log-format list
12244 * 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]12245 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12246 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12247enum act_parse_ret parse_set_req_line(const char **args, int *orig_arg, struct proxy *px,
12248 struct act_rule *rule, char **err)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12249{
12250 int cur_arg = *orig_arg;
12251
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12252 rule->action = ACT_CUSTOM;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12253
12254 switch (args[0][4]) {
12255 case 'm' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12256 rule->arg.http.action = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12257 rule->action_ptr = http_action_set_req_line;
12258 break;
12259 case 'p' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12260 rule->arg.http.action = 1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12261 rule->action_ptr = http_action_set_req_line;
12262 break;
12263 case 'q' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12264 rule->arg.http.action = 2;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12265 rule->action_ptr = http_action_set_req_line;
12266 break;
12267 case 'u' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12268 rule->arg.http.action = 3;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12269 rule->action_ptr = http_action_set_req_line;
12270 break;
12271 default:
12272 memprintf(err, "internal error: unhandled action '%s'", args[0]);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12273 return ACT_RET_PRS_ERR;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12274 }
12275
12276 if (!*args[cur_arg] ||
12277 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
12278 memprintf(err, "expects exactly 1 argument <format>");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12279 return ACT_RET_PRS_ERR;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12280 }
12281
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12282 LIST_INIT(&rule->arg.http.logfmt);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12283 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12284 parse_logformat_string(args[cur_arg], proxy, &rule->arg.http.logfmt, LOG_OPT_HTTP,
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12285 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
12286 proxy->conf.args.file, proxy->conf.args.line);
12287
12288 (*orig_arg)++;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12289 return ACT_RET_PRS_OK;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12290}
12291
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12292/* parse set-status action:
12293 * This action accepts a single argument of type int representing
12294 * an http status code. It returns ACT_RET_PRS_OK on success,
12295 * ACT_RET_PRS_ERR on error.
12296 */
12297enum act_parse_ret parse_http_set_status(const char **args, int *orig_arg, struct proxy *px,
12298 struct act_rule *rule, char **err)
12299{
12300 char *error;
12301
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12302 rule->action = ACT_CUSTOM;
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12303 rule->action_ptr = action_http_set_status;
12304
12305 /* Check if an argument is available */
12306 if (!*args[*orig_arg]) {
12307 memprintf(err, "expects exactly 1 argument <status>");
12308 return ACT_RET_PRS_ERR;
12309 }
12310
12311 /* convert status code as integer */
12312 rule->arg.status.code = strtol(args[*orig_arg], &error, 10);
12313 if (*error != '\0' || rule->arg.status.code < 100 || rule->arg.status.code > 999) {
12314 memprintf(err, "expects an integer status code between 100 and 999");
12315 return ACT_RET_PRS_ERR;
12316 }
12317
12318 (*orig_arg)++;
12319 return ACT_RET_PRS_OK;
12320}
12321
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12322/* This function executes the "capture" action. It executes a fetch expression,
12323 * turns the result into a string and puts it in a capture slot. It always
12324 * returns 1. If an error occurs the action is cancelled, but the rule
12325 * processing continues.
12326 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12327enum act_return http_action_req_capture(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12328 struct session *sess, struct stream *s, int flags)
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12329{
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12330 struct sample *key;
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12331 struct cap_hdr *h = rule->arg.cap.hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12332 char **cap = s->req_cap;
12333 int len;
12334
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12335 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]12336 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12337 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12338
12339 if (cap[h->index] == NULL)
12340 cap[h->index] = pool_alloc2(h->pool);
12341
12342 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12343 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12344
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12345 len = key->data.u.str.len;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12346 if (len > h->len)
12347 len = h->len;
12348
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12349 memcpy(cap[h->index], key->data.u.str.str, len);
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12350 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12351 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12352}
12353
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12354/* This function executes the "capture" action and store the result in a
12355 * capture slot if exists. It executes a fetch expression, turns the result
12356 * into a string and puts it in a capture slot. It always returns 1. If an
12357 * error occurs the action is cancelled, but the rule processing continues.
12358 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12359enum 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]12360 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12361{
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12362 struct sample *key;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12363 struct cap_hdr *h;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12364 char **cap = s->req_cap;
12365 struct proxy *fe = strm_fe(s);
12366 int len;
12367 int i;
12368
12369 /* Look for the original configuration. */
12370 for (h = fe->req_cap, i = fe->nb_req_cap - 1;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12371 h != NULL && i != rule->arg.capid.idx ;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12372 i--, h = h->next);
12373 if (!h)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12374 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12375
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12376 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]12377 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12378 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12379
12380 if (cap[h->index] == NULL)
12381 cap[h->index] = pool_alloc2(h->pool);
12382
12383 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12384 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12385
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12386 len = key->data.u.str.len;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12387 if (len > h->len)
12388 len = h->len;
12389
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12390 memcpy(cap[h->index], key->data.u.str.str, len);
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12391 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12392 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12393}
12394
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12395/* parse an "http-request capture" action. It takes a single argument which is
12396 * a sample fetch expression. It stores the expression into arg->act.p[0] and
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12397 * the allocated hdr_cap struct or the preallocated "id" into arg->act.p[1].
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12398 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12399 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12400enum act_parse_ret parse_http_req_capture(const char **args, int *orig_arg, struct proxy *px,
12401 struct act_rule *rule, char **err)
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12402{
12403 struct sample_expr *expr;
12404 struct cap_hdr *hdr;
12405 int cur_arg;
Willy Tarreau3986ac12015-05-08 16:13:42 +0200[diff] [blame]12406 int len = 0;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12407
12408 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12409 if (strcmp(args[cur_arg], "if") == 0 ||
12410 strcmp(args[cur_arg], "unless") == 0)
12411 break;
12412
12413 if (cur_arg < *orig_arg + 3) {
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12414 memprintf(err, "expects <expression> [ 'len' <length> | id <idx> ]");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12415 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12416 }
12417
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12418 cur_arg = *orig_arg;
12419 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12420 if (!expr)
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12421 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12422
12423 if (!(expr->fetch->val & SMP_VAL_FE_HRQ_HDR)) {
12424 memprintf(err,
12425 "fetch method '%s' extracts information from '%s', none of which is available here",
12426 args[cur_arg-1], sample_src_names(expr->fetch->use));
12427 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12428 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12429 }
12430
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12431 if (!args[cur_arg] || !*args[cur_arg]) {
12432 memprintf(err, "expects 'len or 'id'");
12433 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12434 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12435 }
12436
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12437 if (strcmp(args[cur_arg], "len") == 0) {
12438 cur_arg++;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12439
12440 if (!(px->cap & PR_CAP_FE)) {
12441 memprintf(err, "proxy '%s' has no frontend capability", px->id);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12442 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12443 }
12444
12445 proxy->conf.args.ctx = ARGC_CAP;
12446
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12447 if (!args[cur_arg]) {
12448 memprintf(err, "missing length value");
12449 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12450 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12451 }
12452 /* we copy the table name for now, it will be resolved later */
12453 len = atoi(args[cur_arg]);
12454 if (len <= 0) {
12455 memprintf(err, "length must be > 0");
12456 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12457 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12458 }
12459 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12460
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12461 if (!len) {
12462 memprintf(err, "a positive 'len' argument is mandatory");
12463 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12464 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12465 }
12466
12467 hdr = calloc(sizeof(struct cap_hdr), 1);
12468 hdr->next = px->req_cap;
12469 hdr->name = NULL; /* not a header capture */
12470 hdr->namelen = 0;
12471 hdr->len = len;
12472 hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
12473 hdr->index = px->nb_req_cap++;
12474
12475 px->req_cap = hdr;
12476 px->to_log |= LW_REQHDR;
12477
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12478 rule->action = ACT_CUSTOM;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12479 rule->action_ptr = http_action_req_capture;
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12480 rule->arg.cap.expr = expr;
12481 rule->arg.cap.hdr = hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12482 }
12483
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12484 else if (strcmp(args[cur_arg], "id") == 0) {
12485 int id;
12486 char *error;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12487
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12488 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12489
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12490 if (!args[cur_arg]) {
12491 memprintf(err, "missing id value");
12492 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12493 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12494 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12495
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12496 id = strtol(args[cur_arg], &error, 10);
12497 if (*error != '\0') {
12498 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12499 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12500 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12501 }
12502 cur_arg++;
12503
12504 proxy->conf.args.ctx = ARGC_CAP;
12505
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12506 rule->action = ACT_CUSTOM;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12507 rule->action_ptr = http_action_req_capture_by_id;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12508 rule->arg.capid.expr = expr;
12509 rule->arg.capid.idx = id;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12510 }
12511
12512 else {
12513 memprintf(err, "expects 'len' or 'id', found '%s'", args[cur_arg]);
12514 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12515 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12516 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12517
12518 *orig_arg = cur_arg;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12519 return ACT_RET_PRS_OK;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12520}
12521
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12522/* This function executes the "capture" action and store the result in a
12523 * capture slot if exists. It executes a fetch expression, turns the result
12524 * into a string and puts it in a capture slot. It always returns 1. If an
12525 * error occurs the action is cancelled, but the rule processing continues.
12526 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12527enum 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]12528 struct session *sess, struct stream *s, int flags)
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12529{
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12530 struct sample *key;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12531 struct cap_hdr *h;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12532 char **cap = s->res_cap;
12533 struct proxy *fe = strm_fe(s);
12534 int len;
12535 int i;
12536
12537 /* Look for the original configuration. */
12538 for (h = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12539 h != NULL && i != rule->arg.capid.idx ;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12540 i--, h = h->next);
12541 if (!h)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12542 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12543
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12544 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]12545 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12546 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12547
12548 if (cap[h->index] == NULL)
12549 cap[h->index] = pool_alloc2(h->pool);
12550
12551 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12552 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12553
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12554 len = key->data.u.str.len;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12555 if (len > h->len)
12556 len = h->len;
12557
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12558 memcpy(cap[h->index], key->data.u.str.str, len);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12559 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12560 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12561}
12562
12563/* parse an "http-response capture" action. It takes a single argument which is
12564 * a sample fetch expression. It stores the expression into arg->act.p[0] and
12565 * the allocated hdr_cap struct od the preallocated id into arg->act.p[1].
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12566 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12567 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12568enum act_parse_ret parse_http_res_capture(const char **args, int *orig_arg, struct proxy *px,
12569 struct act_rule *rule, char **err)
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12570{
12571 struct sample_expr *expr;
12572 int cur_arg;
12573 int id;
12574 char *error;
12575
12576 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12577 if (strcmp(args[cur_arg], "if") == 0 ||
12578 strcmp(args[cur_arg], "unless") == 0)
12579 break;
12580
12581 if (cur_arg < *orig_arg + 3) {
12582 memprintf(err, "expects <expression> [ 'len' <length> | id <idx> ]");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12583 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12584 }
12585
12586 cur_arg = *orig_arg;
12587 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12588 if (!expr)
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12589 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12590
12591 if (!(expr->fetch->val & SMP_VAL_FE_HRS_HDR)) {
12592 memprintf(err,
12593 "fetch method '%s' extracts information from '%s', none of which is available here",
12594 args[cur_arg-1], sample_src_names(expr->fetch->use));
12595 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12596 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12597 }
12598
12599 if (!args[cur_arg] || !*args[cur_arg]) {
12600 memprintf(err, "expects 'len or 'id'");
12601 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12602 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12603 }
12604
12605 if (strcmp(args[cur_arg], "id") != 0) {
12606 memprintf(err, "expects 'id', found '%s'", args[cur_arg]);
12607 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12608 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12609 }
12610
12611 cur_arg++;
12612
12613 if (!args[cur_arg]) {
12614 memprintf(err, "missing id value");
12615 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12616 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12617 }
12618
12619 id = strtol(args[cur_arg], &error, 10);
12620 if (*error != '\0') {
12621 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12622 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12623 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12624 }
12625 cur_arg++;
12626
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12627 proxy->conf.args.ctx = ARGC_CAP;
12628
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12629 rule->action = ACT_CUSTOM;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12630 rule->action_ptr = http_action_res_capture_by_id;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12631 rule->arg.capid.expr = expr;
12632 rule->arg.capid.idx = id;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12633
12634 *orig_arg = cur_arg;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12635 return ACT_RET_PRS_OK;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12636}
12637
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12638/*
12639 * Return the struct http_req_action_kw associated to a keyword.
12640 */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12641struct action_kw *action_http_req_custom(const char *kw)
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12642{
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]12643 return action_lookup(&http_req_keywords.list, kw);
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12644}
12645
12646/*
12647 * Return the struct http_res_action_kw associated to a keyword.
12648 */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12649struct action_kw *action_http_res_custom(const char *kw)
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12650{
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]12651 return action_lookup(&http_res_keywords.list, kw);
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12652}
12653
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12654/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12655/* All supported ACL keywords must be declared here. */
12656/************************************************************************/
12657
12658/* Note: must not be declared <const> as its list will be overwritten.
12659 * Please take care of keeping this list alphabetically sorted.
12660 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]12661static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12662 { "base", "base", PAT_MATCH_STR },
12663 { "base_beg", "base", PAT_MATCH_BEG },
12664 { "base_dir", "base", PAT_MATCH_DIR },
12665 { "base_dom", "base", PAT_MATCH_DOM },
12666 { "base_end", "base", PAT_MATCH_END },
12667 { "base_len", "base", PAT_MATCH_LEN },
12668 { "base_reg", "base", PAT_MATCH_REG },
12669 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]12670
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12671 { "cook", "req.cook", PAT_MATCH_STR },
12672 { "cook_beg", "req.cook", PAT_MATCH_BEG },
12673 { "cook_dir", "req.cook", PAT_MATCH_DIR },
12674 { "cook_dom", "req.cook", PAT_MATCH_DOM },
12675 { "cook_end", "req.cook", PAT_MATCH_END },
12676 { "cook_len", "req.cook", PAT_MATCH_LEN },
12677 { "cook_reg", "req.cook", PAT_MATCH_REG },
12678 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12679
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12680 { "hdr", "req.hdr", PAT_MATCH_STR },
12681 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
12682 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
12683 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
12684 { "hdr_end", "req.hdr", PAT_MATCH_END },
12685 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
12686 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
12687 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12688
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12689 /* these two declarations uses strings with list storage (in place
12690 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
12691 * and delete functions are relative to the list management. The parse
12692 * and match method are related to the corresponding fetch methods. This
12693 * is very particular ACL declaration mode.
12694 */
12695 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
12696 { "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]12697
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12698 { "path", "path", PAT_MATCH_STR },
12699 { "path_beg", "path", PAT_MATCH_BEG },
12700 { "path_dir", "path", PAT_MATCH_DIR },
12701 { "path_dom", "path", PAT_MATCH_DOM },
12702 { "path_end", "path", PAT_MATCH_END },
12703 { "path_len", "path", PAT_MATCH_LEN },
12704 { "path_reg", "path", PAT_MATCH_REG },
12705 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12706
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12707 { "req_ver", "req.ver", PAT_MATCH_STR },
12708 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12709
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12710 { "scook", "res.cook", PAT_MATCH_STR },
12711 { "scook_beg", "res.cook", PAT_MATCH_BEG },
12712 { "scook_dir", "res.cook", PAT_MATCH_DIR },
12713 { "scook_dom", "res.cook", PAT_MATCH_DOM },
12714 { "scook_end", "res.cook", PAT_MATCH_END },
12715 { "scook_len", "res.cook", PAT_MATCH_LEN },
12716 { "scook_reg", "res.cook", PAT_MATCH_REG },
12717 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12718
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12719 { "shdr", "res.hdr", PAT_MATCH_STR },
12720 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
12721 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
12722 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
12723 { "shdr_end", "res.hdr", PAT_MATCH_END },
12724 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
12725 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
12726 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12727
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12728 { "url", "url", PAT_MATCH_STR },
12729 { "url_beg", "url", PAT_MATCH_BEG },
12730 { "url_dir", "url", PAT_MATCH_DIR },
12731 { "url_dom", "url", PAT_MATCH_DOM },
12732 { "url_end", "url", PAT_MATCH_END },
12733 { "url_len", "url", PAT_MATCH_LEN },
12734 { "url_reg", "url", PAT_MATCH_REG },
12735 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12736
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12737 { "urlp", "urlp", PAT_MATCH_STR },
12738 { "urlp_beg", "urlp", PAT_MATCH_BEG },
12739 { "urlp_dir", "urlp", PAT_MATCH_DIR },
12740 { "urlp_dom", "urlp", PAT_MATCH_DOM },
12741 { "urlp_end", "urlp", PAT_MATCH_END },
12742 { "urlp_len", "urlp", PAT_MATCH_LEN },
12743 { "urlp_reg", "urlp", PAT_MATCH_REG },
12744 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12745
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]12746 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12747}};
12748
12749/************************************************************************/
12750/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12751/************************************************************************/
12752/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]12753static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12754 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12755 { "base32", smp_fetch_base32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12756 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
12757
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]12758 /* capture are allocated and are permanent in the stream */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12759 { "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]12760
12761 /* retrieve these captures from the HTTP logs */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12762 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12763 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12764 { "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]12765
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12766 { "capture.res.hdr", smp_fetch_capture_header_res, ARG1(1,SINT), NULL, SMP_T_STR, SMP_USE_HRSHP },
12767 { "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]12768
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12769 /* cookie is valid in both directions (eg: for "stick ...") but cook*
12770 * are only here to match the ACL's name, are request-only and are used
12771 * for ACL compatibility only.
12772 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12773 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
12774 { "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]12775 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
12776 { "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]12777
12778 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
12779 * only here to match the ACL's name, are request-only and are used for
12780 * ACL compatibility only.
12781 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12782 { "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]12783 { "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]12784 { "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]12785 { "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]12786
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]12787 { "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]12788 { "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]12789 { "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]12790 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12791 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]12792 { "query", smp_fetch_query, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12793
12794 /* HTTP protocol on the request path */
12795 { "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]12796 { "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]12797
12798 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12799 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
12800 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12801
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]12802 { "req.body", smp_fetch_body, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12803 { "req.body_len", smp_fetch_body_len, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
12804 { "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]12805 { "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]12806
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12807 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12808 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
12809 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12810
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12811 /* 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]12812 { "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]12813 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
12814 { "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]12815
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12816 { "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]12817 { "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]12818 { "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]12819 { "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]12820 { "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]12821 { "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]12822 { "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]12823
12824 /* 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]12825 { "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]12826 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
12827 { "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]12828
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12829 { "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]12830 { "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]12831 { "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]12832 { "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]12833 { "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]12834 { "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]12835 { "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]12836
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12837 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12838 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12839 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
12840 { "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]12841 { "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]12842
12843 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12844 { "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]12845 { "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]12846 { "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]12847 { "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]12848
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12849 { "status", smp_fetch_stcode, 0, NULL, SMP_T_SINT, SMP_USE_HRSHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12850 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12851 { "url32", smp_fetch_url32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12852 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12853 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12854 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]12855 { "url_param", smp_fetch_url_param, ARG2(0,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
12856 { "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]12857 { "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]12858 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12859}};
12860
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12861
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12862/************************************************************************/
12863/* All supported converter keywords must be declared here. */
12864/************************************************************************/
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12865/* Note: must not be declared <const> as its list will be overwritten */
12866static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12867 { "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]12868 { "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]12869 { "capture-req", smp_conv_req_capture, ARG1(1,SINT), NULL, SMP_T_STR, SMP_T_STR},
12870 { "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]12871 { "url_dec", sample_conv_url_dec, 0, NULL, SMP_T_STR, SMP_T_STR},
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12872 { NULL, NULL, 0, 0, 0 },
12873}};
12874
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12875
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12876/************************************************************************/
12877/* All supported http-request action keywords must be declared here. */
12878/************************************************************************/
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12879struct action_kw_list http_req_actions = {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12880 .kw = {
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12881 { "capture", parse_http_req_capture },
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12882 { "set-method", parse_set_req_line },
12883 { "set-path", parse_set_req_line },
12884 { "set-query", parse_set_req_line },
12885 { "set-uri", parse_set_req_line },
Willy Tarreaucb703b02015-04-03 09:52:01 +0200[diff] [blame]12886 { NULL, NULL }
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12887 }
12888};
12889
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12890struct action_kw_list http_res_actions = {
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12891 .kw = {
12892 { "capture", parse_http_res_capture },
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12893 { "set-status", parse_http_set_status },
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12894 { NULL, NULL }
12895 }
12896};
12897
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12898__attribute__((constructor))
12899static void __http_protocol_init(void)
12900{
12901 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]12902 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12903 sample_register_convs(&sample_conv_kws);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12904 http_req_keywords_register(&http_req_actions);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12905 http_res_keywords_register(&http_res_actions);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12906}
12907
12908
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]12909/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]12910 * Local variables:
12911 * c-indent-level: 8
12912 * c-basic-offset: 8
12913 * End:
12914 */