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git01.mediatek.com / haproxy / 1516fe31dddc9f50a8783db496072ea67db0adde / . / src / proto_http.c
blob: 416504247a8df068eef2dcc4325e959b906de41e [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
David Carlier7365f7d2016-04-04 11:54:42 +0100[diff] [blame]278static inline int http_msg_forward_body(struct stream *s, struct http_msg *msg);
279static inline int http_msg_forward_chunked_body(struct stream *s, struct http_msg *msg);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]280
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]281/* This function returns a reason associated with the HTTP status.
282 * This function never fails, a message is always returned.
283 */
284const char *get_reason(unsigned int status)
285{
286 switch (status) {
287 case 100: return "Continue";
288 case 101: return "Switching Protocols";
289 case 102: return "Processing";
290 case 200: return "OK";
291 case 201: return "Created";
292 case 202: return "Accepted";
293 case 203: return "Non-Authoritative Information";
294 case 204: return "No Content";
295 case 205: return "Reset Content";
296 case 206: return "Partial Content";
297 case 207: return "Multi-Status";
298 case 210: return "Content Different";
299 case 226: return "IM Used";
300 case 300: return "Multiple Choices";
301 case 301: return "Moved Permanently";
302 case 302: return "Moved Temporarily";
303 case 303: return "See Other";
304 case 304: return "Not Modified";
305 case 305: return "Use Proxy";
306 case 307: return "Temporary Redirect";
307 case 308: return "Permanent Redirect";
308 case 310: return "Too many Redirects";
309 case 400: return "Bad Request";
310 case 401: return "Unauthorized";
311 case 402: return "Payment Required";
312 case 403: return "Forbidden";
313 case 404: return "Not Found";
314 case 405: return "Method Not Allowed";
315 case 406: return "Not Acceptable";
316 case 407: return "Proxy Authentication Required";
317 case 408: return "Request Time-out";
318 case 409: return "Conflict";
319 case 410: return "Gone";
320 case 411: return "Length Required";
321 case 412: return "Precondition Failed";
322 case 413: return "Request Entity Too Large";
323 case 414: return "Request-URI Too Long";
324 case 415: return "Unsupported Media Type";
325 case 416: return "Requested range unsatisfiable";
326 case 417: return "Expectation failed";
327 case 418: return "I'm a teapot";
328 case 422: return "Unprocessable entity";
329 case 423: return "Locked";
330 case 424: return "Method failure";
331 case 425: return "Unordered Collection";
332 case 426: return "Upgrade Required";
333 case 428: return "Precondition Required";
334 case 429: return "Too Many Requests";
335 case 431: return "Request Header Fields Too Large";
336 case 449: return "Retry With";
337 case 450: return "Blocked by Windows Parental Controls";
338 case 451: return "Unavailable For Legal Reasons";
339 case 456: return "Unrecoverable Error";
340 case 499: return "client has closed connection";
341 case 500: return "Internal Server Error";
342 case 501: return "Not Implemented";
343 case 502: return "Bad Gateway ou Proxy Error";
344 case 503: return "Service Unavailable";
345 case 504: return "Gateway Time-out";
346 case 505: return "HTTP Version not supported";
347 case 506: return "Variant also negociate";
348 case 507: return "Insufficient storage";
349 case 508: return "Loop detected";
350 case 509: return "Bandwidth Limit Exceeded";
351 case 510: return "Not extended";
352 case 511: return "Network authentication required";
353 case 520: return "Web server is returning an unknown error";
354 default:
355 switch (status) {
356 case 100 ... 199: return "Informational";
357 case 200 ... 299: return "Success";
358 case 300 ... 399: return "Redirection";
359 case 400 ... 499: return "Client Error";
360 case 500 ... 599: return "Server Error";
361 default: return "Other";
362 }
363 }
364}
365
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]366void init_proto_http()
367{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]368 int i;
369 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]370 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]371
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]372 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
373 if (!http_err_msgs[msg]) {
374 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
375 abort();
376 }
377
378 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
379 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
380 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]381
382 /* initialize the log header encoding map : '{|}"#' should be encoded with
383 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
384 * URL encoding only requires '"', '#' to be encoded as well as non-
385 * printable characters above.
386 */
387 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
388 memset(url_encode_map, 0, sizeof(url_encode_map));
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]389 memset(http_encode_map, 0, sizeof(url_encode_map));
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]390 for (i = 0; i < 32; i++) {
391 FD_SET(i, hdr_encode_map);
392 FD_SET(i, url_encode_map);
393 }
394 for (i = 127; i < 256; i++) {
395 FD_SET(i, hdr_encode_map);
396 FD_SET(i, url_encode_map);
397 }
398
399 tmp = "\"#{|}";
400 while (*tmp) {
401 FD_SET(*tmp, hdr_encode_map);
402 tmp++;
403 }
404
405 tmp = "\"#";
406 while (*tmp) {
407 FD_SET(*tmp, url_encode_map);
408 tmp++;
409 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]410
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]411 /* initialize the http header encoding map. The draft httpbis define the
412 * header content as:
413 *
414 * HTTP-message = start-line
415 * *( header-field CRLF )
416 * CRLF
417 * [ message-body ]
418 * header-field = field-name ":" OWS field-value OWS
419 * field-value = *( field-content / obs-fold )
420 * field-content = field-vchar [ 1*( SP / HTAB ) field-vchar ]
421 * obs-fold = CRLF 1*( SP / HTAB )
422 * field-vchar = VCHAR / obs-text
423 * VCHAR = %x21-7E
424 * obs-text = %x80-FF
425 *
426 * All the chars are encoded except "VCHAR", "obs-text", SP and HTAB.
427 * The encoded chars are form 0x00 to 0x08, 0x0a to 0x1f and 0x7f. The
428 * "obs-fold" is volontary forgotten because haproxy remove this.
429 */
430 memset(http_encode_map, 0, sizeof(http_encode_map));
431 for (i = 0x00; i <= 0x08; i++)
432 FD_SET(i, http_encode_map);
433 for (i = 0x0a; i <= 0x1f; i++)
434 FD_SET(i, http_encode_map);
435 FD_SET(0x7f, http_encode_map);
436
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]437 /* memory allocations */
Willy Tarreau63986c72015-04-03 22:55:33 +0200[diff] [blame]438 pool2_http_txn = create_pool("http_txn", sizeof(struct http_txn), MEM_F_SHARED);
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]439 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]440 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]441}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]442
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]443/*
444 * We have 26 list of methods (1 per first letter), each of which can have
445 * up to 3 entries (2 valid, 1 null).
446 */
447struct http_method_desc {
Willy Tarreauc8987b32013-12-06 23:43:17 +0100[diff] [blame]448 enum http_meth_t meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]449 int len;
450 const char text[8];
451};
452
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]453const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]454 ['C' - 'A'] = {
455 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
456 },
457 ['D' - 'A'] = {
458 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
459 },
460 ['G' - 'A'] = {
461 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
462 },
463 ['H' - 'A'] = {
464 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
465 },
Christopher Fauletd57ad642015-07-31 14:26:57 +0200[diff] [blame]466 ['O' - 'A'] = {
467 [0] = { .meth = HTTP_METH_OPTIONS , .len=7, .text="OPTIONS" },
468 },
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]469 ['P' - 'A'] = {
470 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
471 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
472 },
473 ['T' - 'A'] = {
474 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
475 },
476 /* rest is empty like this :
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]477 * [0] = { .meth = HTTP_METH_OTHER , .len=0, .text="" },
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]478 */
479};
480
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]481const struct http_method_name http_known_methods[HTTP_METH_OTHER] = {
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]482 [HTTP_METH_OPTIONS] = { "OPTIONS", 7 },
483 [HTTP_METH_GET] = { "GET", 3 },
484 [HTTP_METH_HEAD] = { "HEAD", 4 },
485 [HTTP_METH_POST] = { "POST", 4 },
486 [HTTP_METH_PUT] = { "PUT", 3 },
487 [HTTP_METH_DELETE] = { "DELETE", 6 },
488 [HTTP_METH_TRACE] = { "TRACE", 5 },
489 [HTTP_METH_CONNECT] = { "CONNECT", 7 },
490};
491
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]492/* 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]493 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]494 * RFC2616 for those chars.
495 */
496
497const char http_is_spht[256] = {
498 [' '] = 1, ['\t'] = 1,
499};
500
501const char http_is_crlf[256] = {
502 ['\r'] = 1, ['\n'] = 1,
503};
504
505const char http_is_lws[256] = {
506 [' '] = 1, ['\t'] = 1,
507 ['\r'] = 1, ['\n'] = 1,
508};
509
510const char http_is_sep[256] = {
511 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
512 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
513 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
514 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
515 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
516};
517
518const char http_is_ctl[256] = {
519 [0 ... 31] = 1,
520 [127] = 1,
521};
522
523/*
524 * A token is any ASCII char that is neither a separator nor a CTL char.
525 * Do not overwrite values in assignment since gcc-2.95 will not handle
526 * them correctly. Instead, define every non-CTL char's status.
527 */
528const char http_is_token[256] = {
529 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
530 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
531 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
532 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
533 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
534 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
535 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
536 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
537 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
538 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
539 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
540 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
541 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
542 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
543 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
544 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
545 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
546 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
547 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
548 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
549 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
550 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
551 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
552 ['|'] = 1, ['}'] = 0, ['~'] = 1,
553};
554
555
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]556/*
557 * An http ver_token is any ASCII which can be found in an HTTP version,
558 * which includes 'H', 'T', 'P', '/', '.' and any digit.
559 */
560const char http_is_ver_token[256] = {
561 ['.'] = 1, ['/'] = 1,
562 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
563 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
Thierry FOURNIER63d692c2015-02-28 19:03:56 +0100[diff] [blame]564 ['H'] = 1, ['P'] = 1, ['R'] = 1, ['S'] = 1, ['T'] = 1,
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]565};
566
567
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]568/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]569 * Adds a header and its CRLF at the tail of the message's buffer, just before
570 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]571 * The header is also automatically added to the index <hdr_idx>, and the end
572 * of headers is automatically adjusted. The number of bytes added is returned
573 * on success, otherwise <0 is returned indicating an error.
574 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]575int 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]576{
577 int bytes, len;
578
579 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]580 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]581 if (!bytes)
582 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]583 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]584 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
585}
586
587/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]588 * Adds a header and its CRLF at the tail of the message's buffer, just before
589 * 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]590 * the buffer is only opened and the space reserved, but nothing is copied.
591 * The header is also automatically added to the index <hdr_idx>, and the end
592 * of headers is automatically adjusted. The number of bytes added is returned
593 * on success, otherwise <0 is returned indicating an error.
594 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]595int http_header_add_tail2(struct http_msg *msg,
596 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]597{
598 int bytes;
599
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]600 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]601 if (!bytes)
602 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]603 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]604 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
605}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]606
607/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]608 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
609 * If so, returns the position of the first non-space character relative to
610 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
611 * to return a pointer to the place after the first space. Returns 0 if the
612 * header name does not match. Checks are case-insensitive.
613 */
614int http_header_match2(const char *hdr, const char *end,
615 const char *name, int len)
616{
617 const char *val;
618
619 if (hdr + len >= end)
620 return 0;
621 if (hdr[len] != ':')
622 return 0;
623 if (strncasecmp(hdr, name, len) != 0)
624 return 0;
625 val = hdr + len + 1;
626 while (val < end && HTTP_IS_SPHT(*val))
627 val++;
628 if ((val >= end) && (len + 2 <= end - hdr))
629 return len + 2; /* we may replace starting from second space */
630 return val - hdr;
631}
632
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]633/* Find the first or next occurrence of header <name> in message buffer <sol>
634 * using headers index <idx>, and return it in the <ctx> structure. This
635 * structure holds everything necessary to use the header and find next
636 * occurrence. If its <idx> member is 0, the header is searched from the
637 * beginning. Otherwise, the next occurrence is returned. The function returns
638 * 1 when it finds a value, and 0 when there is no more. It is very similar to
639 * http_find_header2() except that it is designed to work with full-line headers
640 * whose comma is not a delimiter but is part of the syntax. As a special case,
641 * if ctx->val is NULL when searching for a new values of a header, the current
642 * header is rescanned. This allows rescanning after a header deletion.
643 */
644int http_find_full_header2(const char *name, int len,
645 char *sol, struct hdr_idx *idx,
646 struct hdr_ctx *ctx)
647{
648 char *eol, *sov;
649 int cur_idx, old_idx;
650
651 cur_idx = ctx->idx;
652 if (cur_idx) {
653 /* We have previously returned a header, let's search another one */
654 sol = ctx->line;
655 eol = sol + idx->v[cur_idx].len;
656 goto next_hdr;
657 }
658
659 /* first request for this header */
660 sol += hdr_idx_first_pos(idx);
661 old_idx = 0;
662 cur_idx = hdr_idx_first_idx(idx);
663 while (cur_idx) {
664 eol = sol + idx->v[cur_idx].len;
665
666 if (len == 0) {
667 /* No argument was passed, we want any header.
668 * To achieve this, we simply build a fake request. */
669 while (sol + len < eol && sol[len] != ':')
670 len++;
671 name = sol;
672 }
673
674 if ((len < eol - sol) &&
675 (sol[len] == ':') &&
676 (strncasecmp(sol, name, len) == 0)) {
677 ctx->del = len;
678 sov = sol + len + 1;
679 while (sov < eol && http_is_lws[(unsigned char)*sov])
680 sov++;
681
682 ctx->line = sol;
683 ctx->prev = old_idx;
684 ctx->idx = cur_idx;
685 ctx->val = sov - sol;
686 ctx->tws = 0;
687 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
688 eol--;
689 ctx->tws++;
690 }
691 ctx->vlen = eol - sov;
692 return 1;
693 }
694 next_hdr:
695 sol = eol + idx->v[cur_idx].cr + 1;
696 old_idx = cur_idx;
697 cur_idx = idx->v[cur_idx].next;
698 }
699 return 0;
700}
701
Willy Tarreauc90dc232015-02-20 13:51:36 +0100[diff] [blame]702/* Find the first or next header field in message buffer <sol> using headers
703 * index <idx>, and return it in the <ctx> structure. This structure holds
704 * everything necessary to use the header and find next occurrence. If its
705 * <idx> member is 0, the first header is retrieved. Otherwise, the next
706 * occurrence is returned. The function returns 1 when it finds a value, and
707 * 0 when there is no more. It is equivalent to http_find_full_header2() with
708 * no header name.
709 */
710int http_find_next_header(char *sol, struct hdr_idx *idx, struct hdr_ctx *ctx)
711{
712 char *eol, *sov;
713 int cur_idx, old_idx;
714 int len;
715
716 cur_idx = ctx->idx;
717 if (cur_idx) {
718 /* We have previously returned a header, let's search another one */
719 sol = ctx->line;
720 eol = sol + idx->v[cur_idx].len;
721 goto next_hdr;
722 }
723
724 /* first request for this header */
725 sol += hdr_idx_first_pos(idx);
726 old_idx = 0;
727 cur_idx = hdr_idx_first_idx(idx);
728 while (cur_idx) {
729 eol = sol + idx->v[cur_idx].len;
730
731 len = 0;
732 while (1) {
733 if (len >= eol - sol)
734 goto next_hdr;
735 if (sol[len] == ':')
736 break;
737 len++;
738 }
739
740 ctx->del = len;
741 sov = sol + len + 1;
742 while (sov < eol && http_is_lws[(unsigned char)*sov])
743 sov++;
744
745 ctx->line = sol;
746 ctx->prev = old_idx;
747 ctx->idx = cur_idx;
748 ctx->val = sov - sol;
749 ctx->tws = 0;
750
751 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
752 eol--;
753 ctx->tws++;
754 }
755 ctx->vlen = eol - sov;
756 return 1;
757
758 next_hdr:
759 sol = eol + idx->v[cur_idx].cr + 1;
760 old_idx = cur_idx;
761 cur_idx = idx->v[cur_idx].next;
762 }
763 return 0;
764}
765
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]766/* Find the end of the header value contained between <s> and <e>. See RFC2616,
767 * par 2.2 for more information. Note that it requires a valid header to return
768 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]769 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]770char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]771{
772 int quoted, qdpair;
773
774 quoted = qdpair = 0;
775 for (; s < e; s++) {
776 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]777 else if (quoted) {
778 if (*s == '\\') qdpair = 1;
779 else if (*s == '"') quoted = 0;
780 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]781 else if (*s == '"') quoted = 1;
782 else if (*s == ',') return s;
783 }
784 return s;
785}
786
787/* Find the first or next occurrence of header <name> in message buffer <sol>
788 * using headers index <idx>, and return it in the <ctx> structure. This
789 * structure holds everything necessary to use the header and find next
790 * occurrence. If its <idx> member is 0, the header is searched from the
791 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]792 * 1 when it finds a value, and 0 when there is no more. It is designed to work
793 * with headers defined as comma-separated lists. As a special case, if ctx->val
794 * is NULL when searching for a new values of a header, the current header is
795 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]796 */
797int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]798 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]799 struct hdr_ctx *ctx)
800{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]801 char *eol, *sov;
802 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]803
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]804 cur_idx = ctx->idx;
805 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]806 /* We have previously returned a value, let's search
807 * another one on the same line.
808 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]809 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]810 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]811 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]812 eol = sol + idx->v[cur_idx].len;
813
814 if (sov >= eol)
815 /* no more values in this header */
816 goto next_hdr;
817
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]818 /* values remaining for this header, skip the comma but save it
819 * for later use (eg: for header deletion).
820 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]821 sov++;
822 while (sov < eol && http_is_lws[(unsigned char)*sov])
823 sov++;
824
825 goto return_hdr;
826 }
827
828 /* first request for this header */
829 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]830 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]831 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]832 while (cur_idx) {
833 eol = sol + idx->v[cur_idx].len;
834
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]835 if (len == 0) {
836 /* No argument was passed, we want any header.
837 * To achieve this, we simply build a fake request. */
838 while (sol + len < eol && sol[len] != ':')
839 len++;
840 name = sol;
841 }
842
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]843 if ((len < eol - sol) &&
844 (sol[len] == ':') &&
845 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]846 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]847 sov = sol + len + 1;
848 while (sov < eol && http_is_lws[(unsigned char)*sov])
849 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]850
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]851 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]852 ctx->prev = old_idx;
853 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]854 ctx->idx = cur_idx;
855 ctx->val = sov - sol;
856
857 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]858 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]859 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]860 eol--;
861 ctx->tws++;
862 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]863 ctx->vlen = eol - sov;
864 return 1;
865 }
866 next_hdr:
867 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]868 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]869 cur_idx = idx->v[cur_idx].next;
870 }
871 return 0;
872}
873
874int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]875 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]876 struct hdr_ctx *ctx)
877{
878 return http_find_header2(name, strlen(name), sol, idx, ctx);
879}
880
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]881/* Remove one value of a header. This only works on a <ctx> returned by one of
882 * the http_find_header functions. The value is removed, as well as surrounding
883 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]884 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]885 * message <msg>. The new index is returned. If it is zero, it means there is
886 * no more header, so any processing may stop. The ctx is always left in a form
887 * that can be handled by http_find_header2() to find next occurrence.
888 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]889int 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]890{
891 int cur_idx = ctx->idx;
892 char *sol = ctx->line;
893 struct hdr_idx_elem *hdr;
894 int delta, skip_comma;
895
896 if (!cur_idx)
897 return 0;
898
899 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]900 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]901 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]902 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]903 http_msg_move_end(msg, delta);
904 idx->used--;
905 hdr->len = 0; /* unused entry */
906 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]907 if (idx->tail == ctx->idx)
908 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]909 ctx->idx = ctx->prev; /* walk back to the end of previous header */
Willy Tarreau7c1c2172015-01-07 17:23:50 +0100[diff] [blame]910 ctx->line -= idx->v[ctx->idx].len + idx->v[ctx->idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]911 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]912 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]913 return ctx->idx;
914 }
915
916 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]917 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
918 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]919 */
920
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]921 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]922 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]923 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]924 NULL, 0);
925 hdr->len += delta;
926 http_msg_move_end(msg, delta);
927 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]928 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]929 return ctx->idx;
930}
931
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]932/* This function handles a server error at the stream interface level. The
933 * stream interface is assumed to be already in a closed state. An optional
934 * message is copied into the input buffer, and an HTTP status code stored.
935 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]936 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]937 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]938static void http_server_error(struct stream *s, struct stream_interface *si,
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]939 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]940{
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]941 FLT_STRM_CB(s, flt_http_reply(s, status, msg));
Willy Tarreau2bb4a962014-11-28 11:11:05 +0100[diff] [blame]942 channel_auto_read(si_oc(si));
943 channel_abort(si_oc(si));
944 channel_auto_close(si_oc(si));
945 channel_erase(si_oc(si));
946 channel_auto_close(si_ic(si));
947 channel_auto_read(si_ic(si));
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]948 if (status > 0 && msg) {
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]949 s->txn->status = status;
Willy Tarreau2bb4a962014-11-28 11:11:05 +0100[diff] [blame]950 bo_inject(si_ic(si), msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]951 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]952 if (!(s->flags & SF_ERR_MASK))
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]953 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]954 if (!(s->flags & SF_FINST_MASK))
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]955 s->flags |= finst;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]956}
957
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]958/* This function returns the appropriate error location for the given stream
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]959 * and message.
960 */
961
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]962struct chunk *http_error_message(struct stream *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]963{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]964 if (s->be->errmsg[msgnum].str)
965 return &s->be->errmsg[msgnum];
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]966 else if (strm_fe(s)->errmsg[msgnum].str)
967 return &strm_fe(s)->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]968 else
969 return &http_err_chunks[msgnum];
970}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]971
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]972void
973http_reply_and_close(struct stream *s, short status, struct chunk *msg)
974{
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]975 s->txn->flags &= ~TX_WAIT_NEXT_RQ;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]976 FLT_STRM_CB(s, flt_http_reply(s, status, msg));
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]977 stream_int_retnclose(&s->si[0], msg);
978}
979
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]980/*
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]981 * returns a known method among HTTP_METH_* or HTTP_METH_OTHER for all unknown
982 * ones.
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]983 */
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]984enum http_meth_t find_http_meth(const char *str, const int len)
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]985{
986 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]987 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]988
989 m = ((unsigned)*str - 'A');
990
991 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]992 for (h = http_methods[m]; h->len > 0; h++) {
993 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]994 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]995 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]996 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]997 };
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]998 }
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]999 return HTTP_METH_OTHER;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1000}
1001
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1002/* Parse the URI from the given transaction (which is assumed to be in request
1003 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
1004 * It is returned otherwise.
1005 */
Thierry FOURNIER3c331782015-09-17 19:33:35 +0200[diff] [blame]1006char *http_get_path(struct http_txn *txn)
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1007{
1008 char *ptr, *end;
1009
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1010 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1011 end = ptr + txn->req.sl.rq.u_l;
1012
1013 if (ptr >= end)
1014 return NULL;
1015
1016 /* RFC2616, par. 5.1.2 :
1017 * Request-URI = "*" | absuri | abspath | authority
1018 */
1019
1020 if (*ptr == '*')
1021 return NULL;
1022
1023 if (isalpha((unsigned char)*ptr)) {
1024 /* this is a scheme as described by RFC3986, par. 3.1 */
1025 ptr++;
1026 while (ptr < end &&
1027 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
1028 ptr++;
1029 /* skip '://' */
1030 if (ptr == end || *ptr++ != ':')
1031 return NULL;
1032 if (ptr == end || *ptr++ != '/')
1033 return NULL;
1034 if (ptr == end || *ptr++ != '/')
1035 return NULL;
1036 }
1037 /* skip [user[:passwd]@]host[:[port]] */
1038
1039 while (ptr < end && *ptr != '/')
1040 ptr++;
1041
1042 if (ptr == end)
1043 return NULL;
1044
1045 /* OK, we got the '/' ! */
1046 return ptr;
1047}
1048
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]1049/* Parse the URI from the given string and look for the "/" beginning the PATH.
1050 * If not found, return NULL. It is returned otherwise.
1051 */
1052static char *
1053http_get_path_from_string(char *str)
1054{
1055 char *ptr = str;
1056
1057 /* RFC2616, par. 5.1.2 :
1058 * Request-URI = "*" | absuri | abspath | authority
1059 */
1060
1061 if (*ptr == '*')
1062 return NULL;
1063
1064 if (isalpha((unsigned char)*ptr)) {
1065 /* this is a scheme as described by RFC3986, par. 3.1 */
1066 ptr++;
1067 while (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.')
1068 ptr++;
1069 /* skip '://' */
1070 if (*ptr == '\0' || *ptr++ != ':')
1071 return NULL;
1072 if (*ptr == '\0' || *ptr++ != '/')
1073 return NULL;
1074 if (*ptr == '\0' || *ptr++ != '/')
1075 return NULL;
1076 }
1077 /* skip [user[:passwd]@]host[:[port]] */
1078
1079 while (*ptr != '\0' && *ptr != ' ' && *ptr != '/')
1080 ptr++;
1081
1082 if (*ptr == '\0' || *ptr == ' ')
1083 return NULL;
1084
1085 /* OK, we got the '/' ! */
1086 return ptr;
1087}
1088
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]1089/* Returns a 302 for a redirectable request that reaches a server working in
1090 * in redirect mode. This may only be called just after the stream interface
1091 * has moved to SI_ST_ASS. Unprocessable requests are left unchanged and will
1092 * follow normal proxy processing. NOTE: this function is designed to support
1093 * being called once data are scheduled for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1094 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1095void http_perform_server_redirect(struct stream *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1096{
1097 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1098 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1099 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1100 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1101
1102 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1103 trash.len = strlen(HTTP_302);
1104 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1105
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]1106 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1107
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1108 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1109 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1110 return;
1111
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]1112 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1113 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1114 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
1115 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]1116 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1117
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1118 /* 3: add the request URI. Since it was already forwarded, we need
1119 * to temporarily rewind the buffer.
1120 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1121 txn = s->txn;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1122 b_rew(s->req.buf, rewind = http_hdr_rewind(&txn->req));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1123
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1124 path = http_get_path(txn);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1125 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]1126
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1127 b_adv(s->req.buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1128
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1129 if (!path)
1130 return;
1131
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1132 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1133 return;
1134
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1135 memcpy(trash.str + trash.len, path, len);
1136 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1137
1138 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1139 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
1140 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1141 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1142 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
1143 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1144 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1145
1146 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]1147 si_shutr(si);
1148 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1149 si->err_type = SI_ET_NONE;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1150 si->state = SI_ST_CLO;
1151
1152 /* send the message */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1153 http_server_error(s, si, SF_ERR_LOCAL, SF_FINST_C, 302, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1154
1155 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau4521ba62013-01-24 01:25:25 +0100[diff] [blame]1156 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500[diff] [blame]1157 srv_set_sess_last(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1158}
1159
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]1160/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1161 * that the server side is closed. Note that err_type is actually a
1162 * bitmask, where almost only aborts may be cumulated with other
1163 * values. We consider that aborted operations are more important
1164 * than timeouts or errors due to the fact that nobody else in the
1165 * logs might explain incomplete retries. All others should avoid
1166 * being cumulated. It should normally not be possible to have multiple
1167 * aborts at once, but just in case, the first one in sequence is reported.
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1168 * Note that connection errors appearing on the second request of a keep-alive
1169 * connection are not reported since this allows the client to retry.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1170 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1171void http_return_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1172{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]1173 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1174
1175 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1176 http_server_error(s, si, SF_ERR_CLICL, SF_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1177 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1178 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1179 http_server_error(s, si, SF_ERR_CLICL, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1180 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1181 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_TO)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1183 http_server_error(s, si, SF_ERR_SRVTO, 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_QUEUE_ERR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1186 http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1187 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1188 else if (err_type & SI_ET_CONN_TO)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1189 http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1190 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1191 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1192 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1193 http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_C,
1194 503, (s->flags & SF_SRV_REUSED) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1195 http_error_message(s, HTTP_ERR_503));
Willy Tarreau2d400bb2012-05-14 12:11:47 +0200[diff] [blame]1196 else if (err_type & SI_ET_CONN_RES)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1197 http_server_error(s, si, SF_ERR_RESOURCE, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1198 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1199 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1200 else /* SI_ET_CONN_OTHER and others */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1201 http_server_error(s, si, SF_ERR_INTERNAL, SF_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1202 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1203}
1204
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1205extern const char sess_term_cond[8];
1206extern const char sess_fin_state[8];
1207extern const char *monthname[12];
Willy Tarreau63986c72015-04-03 22:55:33 +0200[diff] [blame]1208struct pool_head *pool2_http_txn;
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]1209struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]1210struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]1211struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1212
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1213/*
1214 * Capture headers from message starting at <som> according to header list
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1215 * <cap_hdr>, and fill the <cap> pointers appropriately.
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1216 */
1217void capture_headers(char *som, struct hdr_idx *idx,
1218 char **cap, struct cap_hdr *cap_hdr)
1219{
1220 char *eol, *sol, *col, *sov;
1221 int cur_idx;
1222 struct cap_hdr *h;
1223 int len;
1224
1225 sol = som + hdr_idx_first_pos(idx);
1226 cur_idx = hdr_idx_first_idx(idx);
1227
1228 while (cur_idx) {
1229 eol = sol + idx->v[cur_idx].len;
1230
1231 col = sol;
1232 while (col < eol && *col != ':')
1233 col++;
1234
1235 sov = col + 1;
1236 while (sov < eol && http_is_lws[(unsigned char)*sov])
1237 sov++;
1238
1239 for (h = cap_hdr; h; h = h->next) {
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1240 if (h->namelen && (h->namelen == col - sol) &&
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1241 (strncasecmp(sol, h->name, h->namelen) == 0)) {
1242 if (cap[h->index] == NULL)
1243 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]1244 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1245
1246 if (cap[h->index] == NULL) {
1247 Alert("HTTP capture : out of memory.\n");
1248 continue;
1249 }
1250
1251 len = eol - sov;
1252 if (len > h->len)
1253 len = h->len;
1254
1255 memcpy(cap[h->index], sov, len);
1256 cap[h->index][len]=0;
1257 }
1258 }
1259 sol = eol + idx->v[cur_idx].cr + 1;
1260 cur_idx = idx->v[cur_idx].next;
1261 }
1262}
1263
1264
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1265/* either we find an LF at <ptr> or we jump to <bad>.
1266 */
1267#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
1268
1269/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
1270 * otherwise to <http_msg_ood> with <state> set to <st>.
1271 */
1272#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
1273 ptr++; \
1274 if (likely(ptr < end)) \
1275 goto good; \
1276 else { \
1277 state = (st); \
1278 goto http_msg_ood; \
1279 } \
1280 } while (0)
1281
1282
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1283/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1284 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1285 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
1286 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
1287 * will give undefined results.
1288 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1289 * and that msg->sol points to the beginning of the response.
1290 * If a complete line is found (which implies that at least one CR or LF is
1291 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1292 * returned indicating an incomplete line (which does not mean that parts have
1293 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1294 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1295 * upon next call.
1296 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1297 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1298 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1299 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1300 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1301 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1302const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1303 enum ht_state state, const char *ptr, const char *end,
1304 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1305{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1306 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1307
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1308 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1309 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1310 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1311 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1312 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
1313
1314 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1315 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1316 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1317 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1318 state = HTTP_MSG_ERROR;
1319 break;
1320
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1321 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1322 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1323 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1324 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1325 goto http_msg_rpcode;
1326 }
1327 if (likely(HTTP_IS_SPHT(*ptr)))
1328 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1329 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1330 state = HTTP_MSG_ERROR;
1331 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1332
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1333 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1334 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1335 if (likely(!HTTP_IS_LWS(*ptr)))
1336 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
1337
1338 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1339 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1340 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1341 }
1342
1343 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1344 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1345 http_msg_rsp_reason:
1346 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1347 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1348 msg->sl.st.r_l = 0;
1349 goto http_msg_rpline_eol;
1350
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1351 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1352 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1353 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1354 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1355 goto http_msg_rpreason;
1356 }
1357 if (likely(HTTP_IS_SPHT(*ptr)))
1358 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1359 /* so it's a CR/LF, so there is no reason phrase */
1360 goto http_msg_rsp_reason;
1361
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1362 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1363 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1364 if (likely(!HTTP_IS_CRLF(*ptr)))
1365 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1366 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1367 http_msg_rpline_eol:
1368 /* We have seen the end of line. Note that we do not
1369 * necessarily have the \n yet, but at least we know that we
1370 * have EITHER \r OR \n, otherwise the response would not be
1371 * complete. We can then record the response length and return
1372 * to the caller which will be able to register it.
1373 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1374 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1375 return ptr;
1376
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1377 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1378#ifdef DEBUG_FULL
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1379 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1380 exit(1);
1381#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1382 ;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1383 }
1384
1385 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1386 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1387 if (ret_state)
1388 *ret_state = state;
1389 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1390 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1391 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1392}
1393
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1394/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1395 * This function parses a request line between <ptr> and <end>, starting with
1396 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1397 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1398 * will give undefined results.
1399 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1400 * and that msg->sol points to the beginning of the request.
1401 * If a complete line is found (which implies that at least one CR or LF is
1402 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1403 * returned indicating an incomplete line (which does not mean that parts have
1404 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1405 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1406 * upon next call.
1407 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1408 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1409 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1410 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1411 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1412 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1413const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1414 enum ht_state state, const char *ptr, const char *end,
1415 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1416{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1417 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1418
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1419 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1420 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1421 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1422 if (likely(HTTP_IS_TOKEN(*ptr)))
1423 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1424
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1425 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1426 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1427 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1428 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1429
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1430 if (likely(HTTP_IS_CRLF(*ptr))) {
1431 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1432 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1433 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1434 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1435 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1436 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1437 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1438 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1439 msg->sl.rq.v_l = 0;
1440 goto http_msg_rqline_eol;
1441 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1442 state = HTTP_MSG_ERROR;
1443 break;
1444
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1445 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1446 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1447 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1448 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1449 goto http_msg_rquri;
1450 }
1451 if (likely(HTTP_IS_SPHT(*ptr)))
1452 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1453 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1454 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1455
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1456 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1457 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1458 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1459 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1460
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1461 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1462 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1463 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1464 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1465
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1466 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1467 /* non-ASCII chars are forbidden unless option
1468 * accept-invalid-http-request is enabled in the frontend.
1469 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1470 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1471 if (msg->err_pos < -1)
1472 goto invalid_char;
1473 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1474 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1475 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1476 }
1477
1478 if (likely(HTTP_IS_CRLF(*ptr))) {
1479 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1480 goto http_msg_req09_uri_e;
1481 }
1482
1483 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1484 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1485 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1486 state = HTTP_MSG_ERROR;
1487 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1488
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1489 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1490 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1491 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1492 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1493 goto http_msg_rqver;
1494 }
1495 if (likely(HTTP_IS_SPHT(*ptr)))
1496 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1497 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1498 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1499
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1500 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1501 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1502 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1503 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1504
1505 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1506 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1507 http_msg_rqline_eol:
1508 /* We have seen the end of line. Note that we do not
1509 * necessarily have the \n yet, but at least we know that we
1510 * have EITHER \r OR \n, otherwise the request would not be
1511 * complete. We can then record the request length and return
1512 * to the caller which will be able to register it.
1513 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1514 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1515 return ptr;
1516 }
1517
1518 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1519 state = HTTP_MSG_ERROR;
1520 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1521
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1522 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1523#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1524 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1525 exit(1);
1526#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1527 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1528 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1529
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1530 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1531 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1532 if (ret_state)
1533 *ret_state = state;
1534 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1535 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1536 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1537}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1538
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1539/*
1540 * Returns the data from Authorization header. Function may be called more
1541 * than once so data is stored in txn->auth_data. When no header is found
1542 * 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]1543 * searching again for something we are unable to find anyway. However, if
1544 * the result if valid, the cache is not reused because we would risk to
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1545 * have the credentials overwritten by another stream in parallel.
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1546 */
1547
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]1548/* This bufffer is initialized in the file 'src/haproxy.c'. This length is
1549 * set according to global.tune.bufsize.
1550 */
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1551char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1552
1553int
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1554get_http_auth(struct stream *s)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1555{
1556
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1557 struct http_txn *txn = s->txn;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1558 struct chunk auth_method;
1559 struct hdr_ctx ctx;
1560 char *h, *p;
1561 int len;
1562
1563#ifdef DEBUG_AUTH
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1564 printf("Auth for stream %p: %d\n", s, txn->auth.method);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1565#endif
1566
1567 if (txn->auth.method == HTTP_AUTH_WRONG)
1568 return 0;
1569
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1570 txn->auth.method = HTTP_AUTH_WRONG;
1571
1572 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1573
1574 if (txn->flags & TX_USE_PX_CONN) {
1575 h = "Proxy-Authorization";
1576 len = strlen(h);
1577 } else {
1578 h = "Authorization";
1579 len = strlen(h);
1580 }
1581
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1582 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]1583 return 0;
1584
1585 h = ctx.line + ctx.val;
1586
1587 p = memchr(h, ' ', ctx.vlen);
Willy Tarreau5c557d12016-03-13 08:17:02 +0100[diff] [blame]1588 len = p - h;
1589 if (!p || len <= 0)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1590 return 0;
1591
David Carlier7365f7d2016-04-04 11:54:42 +0100[diff] [blame]1592 if (chunk_initlen(&auth_method, h, 0, len) != 1)
1593 return 0;
1594
Willy Tarreau5c557d12016-03-13 08:17:02 +0100[diff] [blame]1595 chunk_initlen(&txn->auth.method_data, p + 1, 0, ctx.vlen - len - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1596
1597 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1598
1599 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1600 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1601
1602 if (len < 0)
1603 return 0;
1604
1605
1606 get_http_auth_buff[len] = '\0';
1607
1608 p = strchr(get_http_auth_buff, ':');
1609
1610 if (!p)
1611 return 0;
1612
1613 txn->auth.user = get_http_auth_buff;
1614 *p = '\0';
1615 txn->auth.pass = p+1;
1616
1617 txn->auth.method = HTTP_AUTH_BASIC;
1618 return 1;
1619 }
1620
1621 return 0;
1622}
1623
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1624
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1625/*
1626 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1627 * depending on the initial msg->msg_state. The caller is responsible for
1628 * ensuring that the message does not wrap. The function can be preempted
1629 * everywhere when data are missing and recalled at the exact same location
1630 * with no information loss. The message may even be realigned between two
1631 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1632 * 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]1633 * fields. Note that msg->sol will be initialized after completing the first
1634 * state, so that none of the msg pointers has to be initialized prior to the
1635 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1636 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1637void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1638{
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1639 enum ht_state state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1640 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1641 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1642
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1643 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1644 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1645 ptr = buf->p + msg->next;
1646 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1647
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1648 if (unlikely(ptr >= end))
1649 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1650
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1651 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1652 /*
1653 * First, states that are specific to the response only.
1654 * We check them first so that request and headers are
1655 * closer to each other (accessed more often).
1656 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1657 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1658 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1659 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1660 /* we have a start of message, but we have to check
1661 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1662 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1663 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1664 if (unlikely(ptr != buf->p)) {
1665 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1666 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1667 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1668 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1669 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1670 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1671 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1672 hdr_idx_init(idx);
1673 state = HTTP_MSG_RPVER;
1674 goto http_msg_rpver;
1675 }
1676
1677 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1678 goto http_msg_invalid;
1679
1680 if (unlikely(*ptr == '\n'))
1681 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1682 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1683 /* stop here */
1684
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1685 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1686 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1687 EXPECT_LF_HERE(ptr, http_msg_invalid);
1688 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1689 /* stop here */
1690
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1691 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1692 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1693 case HTTP_MSG_RPVER_SP:
1694 case HTTP_MSG_RPCODE:
1695 case HTTP_MSG_RPCODE_SP:
1696 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1697 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1698 state, ptr, end,
1699 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1700 if (unlikely(!ptr))
1701 return;
1702
1703 /* we have a full response and we know that we have either a CR
1704 * or an LF at <ptr>.
1705 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1706 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1707
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1708 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1709 if (likely(*ptr == '\r'))
1710 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1711 goto http_msg_rpline_end;
1712
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1713 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1714 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1715 /* msg->sol must point to the first of CR or LF. */
1716 EXPECT_LF_HERE(ptr, http_msg_invalid);
1717 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1718 /* stop here */
1719
1720 /*
1721 * Second, states that are specific to the request only
1722 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1723 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1724 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1725 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1726 /* we have a start of message, but we have to check
1727 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1728 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1729 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1730 if (likely(ptr != buf->p)) {
1731 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1732 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1733 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1734 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1735 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1736 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1737 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1738 state = HTTP_MSG_RQMETH;
1739 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1740 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1741
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1742 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1743 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1744
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1745 if (unlikely(*ptr == '\n'))
1746 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1747 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
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_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1751 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1752 EXPECT_LF_HERE(ptr, http_msg_invalid);
1753 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1754 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1755
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1756 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1757 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1758 case HTTP_MSG_RQMETH_SP:
1759 case HTTP_MSG_RQURI:
1760 case HTTP_MSG_RQURI_SP:
1761 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1762 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1763 state, ptr, end,
1764 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1765 if (unlikely(!ptr))
1766 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1767
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1768 /* we have a full request and we know that we have either a CR
1769 * or an LF at <ptr>.
1770 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1771 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1772
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1773 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1774 if (likely(*ptr == '\r'))
1775 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1776 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1777
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1778 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1779 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1780 /* check for HTTP/0.9 request : no version information available.
1781 * msg->sol must point to the first of CR or LF.
1782 */
1783 if (unlikely(msg->sl.rq.v_l == 0))
1784 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1785
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1786 EXPECT_LF_HERE(ptr, http_msg_invalid);
1787 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1788 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1789
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1790 /*
1791 * Common states below
1792 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1793 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1794 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1795 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1796 if (likely(!HTTP_IS_CRLF(*ptr))) {
1797 goto http_msg_hdr_name;
1798 }
1799
1800 if (likely(*ptr == '\r'))
1801 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1802 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1803
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1804 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1805 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1806 /* assumes msg->sol points to the first char */
1807 if (likely(HTTP_IS_TOKEN(*ptr)))
1808 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1809
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1810 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1811 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]1812
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1813 if (likely(msg->err_pos < -1) || *ptr == '\n')
1814 goto http_msg_invalid;
1815
1816 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1817 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1818
1819 /* and we still accept this non-token character */
1820 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1821
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1822 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1823 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1824 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1825 if (likely(HTTP_IS_SPHT(*ptr)))
1826 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]1827
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1828 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1829 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1830
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1831 if (likely(!HTTP_IS_CRLF(*ptr))) {
1832 goto http_msg_hdr_val;
1833 }
1834
1835 if (likely(*ptr == '\r'))
1836 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1837 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1838
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1839 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1840 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1841 EXPECT_LF_HERE(ptr, http_msg_invalid);
1842 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]1843
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1844 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1845 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1846 if (likely(HTTP_IS_SPHT(*ptr))) {
1847 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1848 for (; buf->p + msg->sov < ptr; msg->sov++)
1849 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1850 goto http_msg_hdr_l1_sp;
1851 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1852 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1853 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1854 goto http_msg_complete_header;
1855
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1856 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1857 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1858 /* assumes msg->sol points to the first char, and msg->sov
1859 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1860 */
1861 if (likely(!HTTP_IS_CRLF(*ptr)))
1862 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1863
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1864 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1865 /* Note: we could also copy eol into ->eoh so that we have the
1866 * real header end in case it ends with lots of LWS, but is this
1867 * really needed ?
1868 */
1869 if (likely(*ptr == '\r'))
1870 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1871 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1872
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1873 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1874 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1875 EXPECT_LF_HERE(ptr, http_msg_invalid);
1876 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]1877
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1878 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1879 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1880 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1881 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1882 for (; buf->p + msg->eol < ptr; msg->eol++)
1883 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1884 goto http_msg_hdr_val;
1885 }
1886 http_msg_complete_header:
1887 /*
1888 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1889 * Assumes msg->sol points to the first char, msg->sov points
1890 * to the first character of the value and msg->eol to the
1891 * first CR or LF so we know how the line ends. We insert last
1892 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1893 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1894 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1895 idx, idx->tail) < 0))
1896 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1897
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1898 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1899 if (likely(!HTTP_IS_CRLF(*ptr))) {
1900 goto http_msg_hdr_name;
1901 }
1902
1903 if (likely(*ptr == '\r'))
1904 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1905 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1906
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1907 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1908 http_msg_last_lf:
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]1909 /* Assumes msg->sol points to the first of either CR or LF.
1910 * Sets ->sov and ->next to the total header length, ->eoh to
1911 * the last CRLF, and ->eol to the last CRLF length (1 or 2).
1912 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1913 EXPECT_LF_HERE(ptr, http_msg_invalid);
1914 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1915 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1916 msg->eoh = msg->sol;
1917 msg->sol = 0;
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]1918 msg->eol = msg->sov - msg->eoh;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1919 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1920 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1921
1922 case HTTP_MSG_ERROR:
1923 /* this may only happen if we call http_msg_analyser() twice with an error */
1924 break;
1925
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1926 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1927#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1928 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1929 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1930#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1931 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1932 }
1933 http_msg_ood:
1934 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1935 msg->msg_state = state;
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;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1938
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1939 http_msg_invalid:
1940 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1941 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1942 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1943 return;
1944}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1945
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1946/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1947 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1948 * nothing is done and 1 is returned.
1949 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1950static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1951{
1952 int delta;
1953 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1954 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1955
1956 if (msg->sl.rq.v_l != 0)
1957 return 1;
1958
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]1959 /* RFC 1945 allows only GET for HTTP/0.9 requests */
1960 if (txn->meth != HTTP_METH_GET)
1961 return 0;
1962
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1963 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1964 delta = 0;
1965
1966 if (msg->sl.rq.u_l == 0) {
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]1967 /* HTTP/0.9 requests *must* have a request URI, per RFC 1945 */
1968 return 0;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1969 }
1970 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1971 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]1972 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1973 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1974 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1975 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1976 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1977 NULL, NULL);
1978 if (unlikely(!cur_end))
1979 return 0;
1980
1981 /* we have a full HTTP/1.0 request now and we know that
1982 * we have either a CR or an LF at <ptr>.
1983 */
1984 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1985 return 1;
1986}
1987
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1988/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1989 * and "keep-alive" values. If we already know that some headers may safely
1990 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1991 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1992 * - 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]1993 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1994 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1995 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1996 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1997 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1998 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1999void 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]2000{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2001 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2002 const char *hdr_val = "Connection";
2003 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2004
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2005 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2006 return;
2007
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2008 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2009 hdr_val = "Proxy-Connection";
2010 hdr_len = 16;
2011 }
2012
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2013 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2014 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2015 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]2016 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
2017 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2018 if (to_del & 2)
2019 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2020 else
2021 txn->flags |= TX_CON_KAL_SET;
2022 }
2023 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
2024 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2025 if (to_del & 1)
2026 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2027 else
2028 txn->flags |= TX_CON_CLO_SET;
2029 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2030 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
2031 txn->flags |= TX_HDR_CONN_UPG;
2032 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2033 }
2034
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2035 txn->flags |= TX_HDR_CONN_PRS;
2036 return;
2037}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2038
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2039/* Apply desired changes on the Connection: header. Values may be removed and/or
2040 * added depending on the <wanted> flags, which are exclusively composed of
2041 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
2042 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
2043 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2044void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2045{
2046 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2047 const char *hdr_val = "Connection";
2048 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2049
2050 ctx.idx = 0;
2051
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2052
2053 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2054 hdr_val = "Proxy-Connection";
2055 hdr_len = 16;
2056 }
2057
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2058 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2059 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]2060 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
2061 if (wanted & TX_CON_KAL_SET)
2062 txn->flags |= TX_CON_KAL_SET;
2063 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2064 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2065 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2066 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
2067 if (wanted & TX_CON_CLO_SET)
2068 txn->flags |= TX_CON_CLO_SET;
2069 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2070 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2071 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2072 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2073
2074 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
2075 return;
2076
2077 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
2078 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2079 hdr_val = "Connection: close";
2080 hdr_len = 17;
2081 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2082 hdr_val = "Proxy-Connection: close";
2083 hdr_len = 23;
2084 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2085 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2086 }
2087
2088 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
2089 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2090 hdr_val = "Connection: keep-alive";
2091 hdr_len = 22;
2092 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2093 hdr_val = "Proxy-Connection: keep-alive";
2094 hdr_len = 28;
2095 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2096 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2097 }
2098 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2099}
2100
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2101/* Parse the chunk size at msg->next. Once done, caller should adjust ->next to
2102 * point to the first byte of data after the chunk size, so that we know we can
2103 * forward exactly msg->next bytes. msg->sol contains the exact number of bytes
2104 * forming the chunk size. That way it is always possible to differentiate
2105 * between the start of the body and the start of the data. Return the number
2106 * of byte parsed on success, 0 when some data is missing, <0 on error. Note:
2107 * this function is designed to parse wrapped CRLF at the end of the buffer.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2108 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2109static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2110{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2111 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2112 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2113 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2114 const char *end = buf->data + buf->size;
2115 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2116 unsigned int chunk = 0;
2117
2118 /* The chunk size is in the following form, though we are only
2119 * interested in the size and CRLF :
2120 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
2121 */
2122 while (1) {
2123 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2124 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2125 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2126 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2127 if (c < 0) /* not a hex digit anymore */
2128 break;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2129 if (unlikely(++ptr >= end))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2130 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]2131 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2132 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2133 chunk = (chunk << 4) + c;
2134 }
2135
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2136 /* empty size not allowed */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2137 if (unlikely(ptr == ptr_old))
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2138 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2139
2140 while (http_is_spht[(unsigned char)*ptr]) {
2141 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2142 ptr = buf->data;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2143 if (unlikely(ptr == stop))
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2144 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2145 }
2146
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2147 /* Up to there, we know that at least one byte is present at *ptr. Check
2148 * for the end of chunk size.
2149 */
2150 while (1) {
2151 if (likely(HTTP_IS_CRLF(*ptr))) {
2152 /* we now have a CR or an LF at ptr */
2153 if (likely(*ptr == '\r')) {
2154 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2155 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2156 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2157 return 0;
2158 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2159
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2160 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2161 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2162 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2163 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2164 /* done */
2165 break;
2166 }
2167 else if (*ptr == ';') {
2168 /* chunk extension, ends at next CRLF */
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 Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2172 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2173
2174 while (!HTTP_IS_CRLF(*ptr)) {
2175 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2176 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2177 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2178 return 0;
2179 }
2180 /* we have a CRLF now, loop above */
2181 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2182 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2183 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2184 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2185 }
2186
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2187 /* OK we found our CRLF and now <ptr> points to the next byte, which may
2188 * or may not be present. We save the number of bytes parsed into
2189 * msg->sol.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2190 */
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2191 msg->sol = ptr - ptr_old;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2192 if (unlikely(ptr < ptr_old))
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2193 msg->sol += buf->size;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2194 msg->chunk_len = chunk;
2195 msg->body_len += chunk;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2196 return msg->sol;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2197 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2198 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2199 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2200}
2201
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2202/* This function skips trailers in the buffer associated with HTTP message
2203 * <msg>. The first visited position is msg->next. If the end of the trailers is
2204 * found, the function returns >0. So, the caller can automatically schedul it
2205 * to be forwarded, and switch msg->msg_state to HTTP_MSG_DONE. If not enough
2206 * data are available, the function does not change anything except maybe
2207 * msg->sol if it could parse some lines, and returns zero. If a parse error
2208 * is encountered, the function returns < 0 and does not change anything except
2209 * maybe msg->sol. Note that the message must already be in HTTP_MSG_TRAILERS
2210 * state before calling this function, which implies that all non-trailers data
2211 * have already been scheduled for forwarding, and that msg->next exactly
2212 * matches the length of trailers already parsed and not forwarded. It is also
2213 * important to note that this function is designed to be able to parse wrapped
2214 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2215 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2216static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2217{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2218 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2219
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2220 /* we have msg->next which points to next line. Look for CRLF. But
2221 * first, we reset msg->sol */
2222 msg->sol = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2223 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2224 const char *p1 = NULL, *p2 = NULL;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2225 const char *start = b_ptr(buf, msg->next + msg->sol);
2226 const char *stop = bi_end(buf);
2227 const char *ptr = start;
2228 int bytes = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2229
2230 /* scan current line and stop at LF or CRLF */
2231 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2232 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2233 return 0;
2234
2235 if (*ptr == '\n') {
2236 if (!p1)
2237 p1 = ptr;
2238 p2 = ptr;
2239 break;
2240 }
2241
2242 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2243 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2244 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2245 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2246 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2247 p1 = ptr;
2248 }
2249
2250 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2251 if (ptr >= buf->data + buf->size)
2252 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2253 }
2254
2255 /* after LF; point to beginning of next line */
2256 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2257 if (p2 >= buf->data + buf->size)
2258 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2259
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2260 bytes = p2 - start;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2261 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2262 bytes += buf->size;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2263 msg->sol += bytes;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2264
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2265 /* LF/CRLF at beginning of line => end of trailers at p2.
2266 * Everything was scheduled for forwarding, there's nothing left
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2267 * from this message. */
2268 if (p1 == start)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2269 return 1;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2270
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2271 /* OK, next line then */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2272 }
2273}
2274
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2275/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF or
2276 * a possible LF alone at the end of a chunk. The caller should adjust msg->next
2277 * in order to include this part into the next forwarding phase. Note that the
2278 * caller must ensure that ->p points to the first byte to parse. It returns
2279 * the number of bytes parsed on success, so the caller can set msg_state to
2280 * HTTP_MSG_CHUNK_SIZE. If not enough data are available, the function does not
2281 * change anything and returns zero. If a parse error is encountered, the
2282 * function returns < 0. Note: this function is designed to parse wrapped CRLF
2283 * at the end of the buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2284 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2285static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2286{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2287 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2288 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2289 int bytes;
2290
2291 /* NB: we'll check data availabilty at the end. It's not a
2292 * problem because whatever we match first will be checked
2293 * against the correct length.
2294 */
2295 bytes = 1;
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2296 ptr = b_ptr(buf, msg->next);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2297 if (*ptr == '\r') {
2298 bytes++;
2299 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2300 if (ptr >= buf->data + buf->size)
2301 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2302 }
2303
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2304 if (msg->next + bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2305 return 0;
2306
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2307 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2308 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2309 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2310 }
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2311 return bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2312}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2313
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2314/* Parses a qvalue and returns it multipled by 1000, from 0 to 1000. If the
2315 * value is larger than 1000, it is bound to 1000. The parser consumes up to
2316 * 1 digit, one dot and 3 digits and stops on the first invalid character.
2317 * Unparsable qvalues return 1000 as "q=1.000".
2318 */
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2319int parse_qvalue(const char *qvalue, const char **end)
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2320{
2321 int q = 1000;
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') * 1000;
2326
2327 if (*qvalue++ != '.')
2328 goto out;
2329
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2330 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2331 goto out;
2332 q += (*qvalue++ - '0') * 100;
2333
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2334 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2335 goto out;
2336 q += (*qvalue++ - '0') * 10;
2337
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2338 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2339 goto out;
2340 q += (*qvalue++ - '0') * 1;
2341 out:
2342 if (q > 1000)
2343 q = 1000;
Willy Tarreau38b3aa52014-04-22 23:32:05 +0200[diff] [blame]2344 if (end)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2345 *end = qvalue;
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2346 return q;
2347}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2348
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2349void 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]2350{
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]2351 struct proxy *fe = strm_fe(s);
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2352 int tmp = TX_CON_WANT_KAL;
2353
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2354 if (!((fe->options2|s->be->options2) & PR_O2_FAKE_KA)) {
2355 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2356 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN)
2357 tmp = TX_CON_WANT_TUN;
2358
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2359 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2360 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2361 tmp = TX_CON_WANT_TUN;
2362 }
2363
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2364 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2365 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL) {
2366 /* option httpclose + server_close => forceclose */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2367 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2368 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2369 tmp = TX_CON_WANT_CLO;
2370 else
2371 tmp = TX_CON_WANT_SCL;
2372 }
2373
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2374 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2375 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL)
2376 tmp = TX_CON_WANT_CLO;
2377
2378 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
2379 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
2380
2381 if (!(txn->flags & TX_HDR_CONN_PRS) &&
2382 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) {
2383 /* parse the Connection header and possibly clean it */
2384 int to_del = 0;
2385 if ((msg->flags & HTTP_MSGF_VER_11) ||
2386 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2387 !((fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2388 to_del |= 2; /* remove "keep-alive" */
2389 if (!(msg->flags & HTTP_MSGF_VER_11))
2390 to_del |= 1; /* remove "close" */
2391 http_parse_connection_header(txn, msg, to_del);
2392 }
2393
2394 /* check if client or config asks for explicit close in KAL/SCL */
2395 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
2396 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
2397 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
2398 (!(msg->flags & HTTP_MSGF_VER_11) && !(txn->flags & TX_HDR_CONN_KAL)) || /* no "connection: k-a" in 1.0 */
2399 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2400 fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2401 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
2402}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2403
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2404/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2405 * processing can continue on next analysers, or zero if it either needs more
2406 * data or wants to immediately abort the request (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2407 * 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]2408 * when it has nothing left to do, and may remove any analyser when it wants to
2409 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2410 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2411int http_wait_for_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2412{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2413 /*
2414 * We will parse the partial (or complete) lines.
2415 * We will check the request syntax, and also join multi-line
2416 * headers. An index of all the lines will be elaborated while
2417 * parsing.
2418 *
2419 * For the parsing, we use a 28 states FSM.
2420 *
2421 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2422 * req->buf->p = beginning of request
2423 * req->buf->p + msg->eoh = end of processed headers / start of current one
2424 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2425 * msg->eol = end of current header or line (LF or CRLF)
2426 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2427 *
2428 * 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]2429 * we will set a few fields (txn->meth, sn->flags/SF_REDIRECTABLE).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2430 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2431 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2432 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2433
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2434 int cur_idx;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2435 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]2436 struct http_txn *txn = s->txn;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2437 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2438 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2439
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2440 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]2441 now_ms, __FUNCTION__,
2442 s,
2443 req,
2444 req->rex, req->wex,
2445 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2446 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2447 req->analysers);
2448
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2449 /* we're speaking HTTP here, so let's speak HTTP to the client */
2450 s->srv_error = http_return_srv_error;
2451
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2452 /* There's a protected area at the end of the buffer for rewriting
2453 * purposes. We don't want to start to parse the request if the
2454 * protected area is affected, because we may have to move processed
2455 * data later, which is much more complicated.
2456 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2457 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2458 if (txn->flags & TX_NOT_FIRST) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]2459 if (unlikely(!channel_is_rewritable(req))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2460 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2461 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2462 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2463 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2464 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]2465 req->flags |= CF_WAKE_WRITE;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2466 return 0;
2467 }
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2468 if (unlikely(bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2469 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite))
2470 buffer_slow_realign(req->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2471 }
2472
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2473 /* Note that we have the same problem with the response ; we
2474 * may want to send a redirect, error or anything which requires
2475 * some spare space. So we'll ensure that we have at least
2476 * maxrewrite bytes available in the response buffer before
2477 * processing that one. This will only affect pipelined
2478 * keep-alive requests.
2479 */
2480 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2481 unlikely(!channel_is_rewritable(&s->res) ||
2482 bi_end(s->res.buf) < b_ptr(s->res.buf, txn->rsp.next) ||
2483 bi_end(s->res.buf) > s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)) {
2484 if (s->res.buf->o) {
2485 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]2486 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2487 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2488 channel_dont_connect(req);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2489 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
2490 s->res.flags |= CF_WAKE_WRITE;
2491 s->res.analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2492 return 0;
2493 }
2494 }
2495
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2496 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2497 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2498 }
2499
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2500 /* 1: we might have to print this header in debug mode */
2501 if (unlikely((global.mode & MODE_DEBUG) &&
2502 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]2503 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2504 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2505
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2506 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2507 /* this is a bit complex : in case of error on the request line,
2508 * we know that rq.l is still zero, so we display only the part
2509 * up to the end of the line (truncated by debug_hdr).
2510 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2511 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2512 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2513
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2514 sol += hdr_idx_first_pos(&txn->hdr_idx);
2515 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2516
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2517 while (cur_idx) {
2518 eol = sol + txn->hdr_idx.v[cur_idx].len;
2519 debug_hdr("clihdr", s, sol, eol);
2520 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2521 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2522 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2523 }
2524
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2525
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2526 /*
2527 * Now we quickly check if we have found a full valid request.
2528 * If not so, we check the FD and buffer states before leaving.
2529 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2530 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2531 * requests are checked first. When waiting for a second request
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2532 * on a keep-alive stream, if we encounter and error, close, t/o,
2533 * we note the error in the stream flags but don't set any state.
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2534 * Since the error will be noted there, it will not be counted by
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2535 * process_stream() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2536 * Last, we may increase some tracked counters' http request errors on
2537 * the cases that are deliberately the client's fault. For instance,
2538 * a timeout or connection reset is not counted as an error. However
2539 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2540 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2541
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2542 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2543 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2544 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2545 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2546 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2547 stream_inc_http_req_ctr(s);
2548 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2549 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2550 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2551 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2552
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2553 /* 1: Since we are in header mode, if there's no space
2554 * left for headers, we won't be able to free more
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2555 * later, so the stream will never terminate. We
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2556 * must terminate it now.
2557 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2558 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2559 /* FIXME: check if URI is set and return Status
2560 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2561 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2562 stream_inc_http_req_ctr(s);
2563 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2564 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2565 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2566 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2567 goto return_bad_req;
2568 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2569
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2570 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2571 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2572 if (!(s->flags & SF_ERR_MASK))
2573 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2574
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2575 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2576 goto failed_keep_alive;
2577
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2578 if (sess->fe->options & PR_O_IGNORE_PRB)
2579 goto failed_keep_alive;
2580
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2581 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2582 if (msg->err_pos >= 0) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2583 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]2584 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2585 }
2586
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2587 txn->status = 400;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2588 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2589 http_reply_and_close(s, txn->status, NULL);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2590 req->analysers &= AN_FLT_END;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2591 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2592 proxy_inc_fe_req_ctr(sess->fe);
2593 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2594 if (sess->listener->counters)
2595 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2596
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2597 if (!(s->flags & SF_FINST_MASK))
2598 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2599 return 0;
2600 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2601
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2602 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2603 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]2604 if (!(s->flags & SF_ERR_MASK))
2605 s->flags |= SF_ERR_CLITO;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2606
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2607 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2608 goto failed_keep_alive;
2609
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2610 if (sess->fe->options & PR_O_IGNORE_PRB)
2611 goto failed_keep_alive;
2612
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2613 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2614 if (msg->err_pos >= 0) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2615 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]2616 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2617 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2618 txn->status = 408;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2619 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2620 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_408));
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2621 req->analysers &= AN_FLT_END;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2622
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2623 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2624 proxy_inc_fe_req_ctr(sess->fe);
2625 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2626 if (sess->listener->counters)
2627 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2628
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2629 if (!(s->flags & SF_FINST_MASK))
2630 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2631 return 0;
2632 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2633
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2634 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2635 else if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2636 if (!(s->flags & SF_ERR_MASK))
2637 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2638
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2639 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2640 goto failed_keep_alive;
2641
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2642 if (sess->fe->options & PR_O_IGNORE_PRB)
2643 goto failed_keep_alive;
2644
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2645 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2646 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]2647 txn->status = 400;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2648 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2649 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2650 req->analysers &= AN_FLT_END;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2651 stream_inc_http_err_ctr(s);
2652 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2653 proxy_inc_fe_req_ctr(sess->fe);
2654 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2655 if (sess->listener->counters)
2656 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2657
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2658 if (!(s->flags & SF_FINST_MASK))
2659 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2660 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2661 }
2662
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2663 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2664 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2665 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2666#ifdef TCP_QUICKACK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2667 if (sess->listener->options & LI_O_NOQUICKACK && req->buf->i &&
2668 objt_conn(sess->origin) && conn_ctrl_ready(__objt_conn(sess->origin))) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2669 /* We need more data, we have to re-enable quick-ack in case we
2670 * previously disabled it, otherwise we might cause the client
2671 * to delay next data.
2672 */
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2673 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]2674 }
2675#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2676
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2677 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2678 /* If the client starts to talk, let's fall back to
2679 * request timeout processing.
2680 */
2681 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2682 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2683 }
2684
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2685 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2686 if (!tick_isset(req->analyse_exp)) {
2687 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2688 (txn->flags & TX_WAIT_NEXT_RQ) &&
2689 tick_isset(s->be->timeout.httpka))
2690 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2691 else
2692 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2693 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2694
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2695 /* we're not ready yet */
2696 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2697
2698 failed_keep_alive:
2699 /* Here we process low-level errors for keep-alive requests. In
2700 * short, if the request is not the first one and it experiences
2701 * a timeout, read error or shutdown, we just silently close so
2702 * that the client can try again.
2703 */
2704 txn->status = 0;
2705 msg->msg_state = HTTP_MSG_RQBEFORE;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2706 req->analysers &= AN_FLT_END;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2707 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]2708 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2709 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2710 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2711 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2712 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2713
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2714 /* OK now we have a complete HTTP request with indexed headers. Let's
2715 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2716 * 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]2717 * 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]2718 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2719 * byte after the last LF. msg->sov points to the first byte of data.
2720 * msg->eol cannot be trusted because it may have been left uninitialized
2721 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2722 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2723
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2724 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2725 proxy_inc_fe_req_ctr(sess->fe); /* one more valid request for this FE */
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2726
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2727 if (txn->flags & TX_WAIT_NEXT_RQ) {
2728 /* kill the pending keep-alive timeout */
2729 txn->flags &= ~TX_WAIT_NEXT_RQ;
2730 req->analyse_exp = TICK_ETERNITY;
2731 }
2732
2733
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2734 /* Maybe we found in invalid header name while we were configured not
2735 * to block on that, so we have to capture it now.
2736 */
2737 if (unlikely(msg->err_pos >= 0))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2738 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]2739
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2740 /*
2741 * 1: identify the method
2742 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2743 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2744
2745 /* we can make use of server redirect on GET and HEAD */
2746 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2747 s->flags |= SF_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2748
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2749 /*
2750 * 2: check if the URI matches the monitor_uri.
2751 * We have to do this for every request which gets in, because
2752 * the monitor-uri is defined by the frontend.
2753 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2754 if (unlikely((sess->fe->monitor_uri_len != 0) &&
2755 (sess->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2756 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2757 sess->fe->monitor_uri,
2758 sess->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2759 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2760 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2761 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2762 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2763
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2764 s->flags |= SF_MONITOR;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2765 sess->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2766
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2767 /* Check if we want to fail this monitor request or not */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2768 list_for_each_entry(cond, &sess->fe->mon_fail_cond, list) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]2769 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]2770
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2771 ret = acl_pass(ret);
2772 if (cond->pol == ACL_COND_UNLESS)
2773 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2774
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2775 if (ret) {
2776 /* we fail this request, let's return 503 service unavail */
2777 txn->status = 503;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2778 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_503));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2779 if (!(s->flags & SF_ERR_MASK))
2780 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2781 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2782 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2783 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2784
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2785 /* nothing to fail, let's reply normaly */
2786 txn->status = 200;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2787 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_200));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2788 if (!(s->flags & SF_ERR_MASK))
2789 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2790 goto return_prx_cond;
2791 }
2792
2793 /*
2794 * 3: Maybe we have to copy the original REQURI for the logs ?
2795 * Note: we cannot log anymore if the request has been
2796 * classified as invalid.
2797 */
2798 if (unlikely(s->logs.logwait & LW_REQ)) {
2799 /* we have a complete HTTP request that we must log */
2800 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2801 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2802
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2803 if (urilen >= REQURI_LEN)
2804 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2805 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2806 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2807
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2808 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2809 s->do_log(s);
2810 } else {
2811 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2812 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2813 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2814
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]2815 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
2816 * exactly one digit "." one digit. This check may be disabled using
2817 * option accept-invalid-http-request.
2818 */
2819 if (!(sess->fe->options2 & PR_O2_REQBUG_OK)) {
2820 if (msg->sl.rq.v_l != 8) {
2821 msg->err_pos = msg->sl.rq.v;
2822 goto return_bad_req;
2823 }
2824
2825 if (req->buf->p[msg->sl.rq.v + 4] != '/' ||
2826 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 5]) ||
2827 req->buf->p[msg->sl.rq.v + 6] != '.' ||
2828 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 7])) {
2829 msg->err_pos = msg->sl.rq.v + 4;
2830 goto return_bad_req;
2831 }
2832 }
Willy Tarreau13317662015-05-01 13:47:08 +0200[diff] [blame]2833 else {
2834 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
2835 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
2836 goto return_bad_req;
2837 }
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]2838
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2839 /* ... and check if the request is HTTP/1.1 or above */
2840 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2841 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2842 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2843 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2844 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2845
2846 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2847 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]2848
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2849 /* if the frontend has "option http-use-proxy-header", we'll check if
2850 * we have what looks like a proxied connection instead of a connection,
2851 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2852 * Note that this is *not* RFC-compliant, however browsers and proxies
2853 * happen to do that despite being non-standard :-(
2854 * We consider that a request not beginning with either '/' or '*' is
2855 * a proxied connection, which covers both "scheme://location" and
2856 * CONNECT ip:port.
2857 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2858 if ((sess->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2859 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2860 txn->flags |= TX_USE_PX_CONN;
2861
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2862 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2863 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2864
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2865 /* 5: we may need to capture headers */
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]2866 if (unlikely((s->logs.logwait & LW_REQHDR) && s->req_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2867 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]2868 s->req_cap, sess->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2869
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2870 /* 6: determine the transfer-length according to RFC2616 #4.4, updated
2871 * by RFC7230#3.3.3 :
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2872 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2873 * The length of a message body is determined by one of the following
2874 * (in order of precedence):
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2875 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2876 * 1. Any response to a HEAD request and any response with a 1xx
2877 * (Informational), 204 (No Content), or 304 (Not Modified) status
2878 * code is always terminated by the first empty line after the
2879 * header fields, regardless of the header fields present in the
2880 * message, and thus cannot contain a message body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2881 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2882 * 2. Any 2xx (Successful) response to a CONNECT request implies that
2883 * the connection will become a tunnel immediately after the empty
2884 * line that concludes the header fields. A client MUST ignore any
2885 * Content-Length or Transfer-Encoding header fields received in
2886 * such a message.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2887 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2888 * 3. If a Transfer-Encoding header field is present and the chunked
2889 * transfer coding (Section 4.1) is the final encoding, the message
2890 * body length is determined by reading and decoding the chunked
2891 * data until the transfer coding indicates the data is complete.
2892 *
2893 * If a Transfer-Encoding header field is present in a response and
2894 * the chunked transfer coding is not the final encoding, the
2895 * message body length is determined by reading the connection until
2896 * it is closed by the server. If a Transfer-Encoding header field
2897 * is present in a request and the chunked transfer coding is not
2898 * the final encoding, the message body length cannot be determined
2899 * reliably; the server MUST respond with the 400 (Bad Request)
2900 * status code and then close the connection.
2901 *
2902 * If a message is received with both a Transfer-Encoding and a
2903 * Content-Length header field, the Transfer-Encoding overrides the
2904 * Content-Length. Such a message might indicate an attempt to
2905 * perform request smuggling (Section 9.5) or response splitting
2906 * (Section 9.4) and ought to be handled as an error. A sender MUST
2907 * remove the received Content-Length field prior to forwarding such
2908 * a message downstream.
2909 *
2910 * 4. If a message is received without Transfer-Encoding and with
2911 * either multiple Content-Length header fields having differing
2912 * field-values or a single Content-Length header field having an
2913 * invalid value, then the message framing is invalid and the
2914 * recipient MUST treat it as an unrecoverable error. If this is a
2915 * request message, the server MUST respond with a 400 (Bad Request)
2916 * status code and then close the connection. If this is a response
2917 * message received by a proxy, the proxy MUST close the connection
2918 * to the server, discard the received response, and send a 502 (Bad
2919 * Gateway) response to the client. If this is a response message
2920 * received by a user agent, the user agent MUST close the
2921 * connection to the server and discard the received response.
2922 *
2923 * 5. If a valid Content-Length header field is present without
2924 * Transfer-Encoding, its decimal value defines the expected message
2925 * body length in octets. If the sender closes the connection or
2926 * the recipient times out before the indicated number of octets are
2927 * received, the recipient MUST consider the message to be
2928 * incomplete and close the connection.
2929 *
2930 * 6. If this is a request message and none of the above are true, then
2931 * the message body length is zero (no message body is present).
2932 *
2933 * 7. Otherwise, this is a response message without a declared message
2934 * body length, so the message body length is determined by the
2935 * number of octets received prior to the server closing the
2936 * connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2937 */
2938
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2939 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2940 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]2941 while (http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2942 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2943 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2944 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]2945 /* chunked not last, return badreq */
2946 goto return_bad_req;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2947 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2948 }
2949
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]2950 /* Chunked requests must have their content-length removed */
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2951 ctx.idx = 0;
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]2952 if (msg->flags & HTTP_MSGF_TE_CHNK) {
2953 while (http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx))
2954 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2955 }
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]2956 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]2957 signed long long cl;
2958
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2959 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2960 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2961 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2962 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2963
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2964 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2965 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2966 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2967 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2968
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2969 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2970 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2971 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2972 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2973
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2974 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2975 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2976 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2977 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2978
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2979 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2980 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2981 }
2982
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]2983 /* even bodyless requests have a known length */
2984 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2985
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]2986 /* Until set to anything else, the connection mode is set as Keep-Alive. It will
2987 * only change if both the request and the config reference something else.
2988 * Option httpclose by itself sets tunnel mode where headers are mangled.
2989 * However, if another mode is set, it will affect it (eg: server-close/
2990 * keep-alive + httpclose = close). Note that we avoid to redo the same work
2991 * if FE and BE have the same settings (common). The method consists in
2992 * checking if options changed between the two calls (implying that either
2993 * one is non-null, or one of them is non-null and we are there for the first
2994 * time.
2995 */
2996 if (!(txn->flags & TX_HDR_CONN_PRS) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2997 ((sess->fe->options & PR_O_HTTP_MODE) != (s->be->options & PR_O_HTTP_MODE)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2998 http_adjust_conn_mode(s, txn, msg);
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]2999
Willy Tarreau9fbe18e2015-05-01 22:42:08 +0200[diff] [blame]3000 /* we may have to wait for the request's body */
3001 if ((s->be->options & PR_O_WREQ_BODY) &&
3002 (msg->body_len || (msg->flags & HTTP_MSGF_TE_CHNK)))
3003 req->analysers |= AN_REQ_HTTP_BODY;
3004
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3005 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3006 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3007 req->analyse_exp = TICK_ETERNITY;
3008 return 1;
3009
3010 return_bad_req:
3011 /* We centralize bad requests processing here */
3012 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3013 /* we detected a parsing error. We want to archive this request
3014 * in the dedicated proxy area for later troubleshooting.
3015 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3016 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]3017 }
3018
3019 txn->req.msg_state = HTTP_MSG_ERROR;
3020 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]3021 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]3022
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3023 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]3024 if (sess->listener->counters)
3025 sess->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3026
3027 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]3028 if (!(s->flags & SF_ERR_MASK))
3029 s->flags |= SF_ERR_PRXCOND;
3030 if (!(s->flags & SF_FINST_MASK))
3031 s->flags |= SF_FINST_R;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3032
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]3033 req->analysers &= AN_FLT_END;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3034 req->analyse_exp = TICK_ETERNITY;
3035 return 0;
3036}
3037
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]3038
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3039/* This function prepares an applet to handle the stats. It can deal with the
3040 * "100-continue" expectation, check that admin rules are met for POST requests,
3041 * and program a response message if something was unexpected. It cannot fail
3042 * 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]3043 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3044 * s->target which is supposed to already point to the stats applet. The caller
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3045 * is expected to have already assigned an appctx to the stream.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3046 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3047int http_handle_stats(struct stream *s, struct channel *req)
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3048{
3049 struct stats_admin_rule *stats_admin_rule;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]3050 struct stream_interface *si = &s->si[1];
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3051 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3052 struct http_txn *txn = s->txn;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3053 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3054 struct uri_auth *uri_auth = s->be->uri_auth;
3055 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3056 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3057
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3058 appctx = si_appctx(si);
3059 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
3060 appctx->st1 = appctx->st2 = 0;
3061 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
3062 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3063 if ((msg->flags & HTTP_MSGF_VER_11) && (s->txn->meth != HTTP_METH_HEAD))
Willy Tarreauaf3cf702014-04-22 22:19:53 +0200[diff] [blame]3064 appctx->ctx.stats.flags |= STAT_CHUNKED;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3065
3066 uri = msg->chn->buf->p + msg->sl.rq.u;
3067 lookup = uri + uri_auth->uri_len;
3068
3069 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
3070 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3071 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3072 break;
3073 }
3074 }
3075
3076 if (uri_auth->refresh) {
3077 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
3078 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3079 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3080 break;
3081 }
3082 }
3083 }
3084
3085 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
3086 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3087 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3088 break;
3089 }
3090 }
3091
Willy Tarreau1e62df92016-01-11 18:57:53 +0100[diff] [blame]3092 for (h = lookup; h <= uri + msg->sl.rq.u_l - 6; h++) {
3093 if (memcmp(h, ";typed", 6) == 0) {
3094 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
3095 appctx->ctx.stats.flags |= STAT_FMT_TYPED;
3096 break;
3097 }
3098 }
3099
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3100 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3101 if (memcmp(h, ";st=", 4) == 0) {
3102 int i;
3103 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3104 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3105 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
3106 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3107 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3108 break;
3109 }
3110 }
3111 break;
3112 }
3113 }
3114
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3115 appctx->ctx.stats.scope_str = 0;
3116 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3117 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3118 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
3119 int itx = 0;
3120 const char *h2;
3121 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
3122 const char *err;
3123
3124 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
3125 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3126 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3127 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
3128 itx++;
3129 h++;
3130 }
3131
3132 if (itx > STAT_SCOPE_TXT_MAXLEN)
3133 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3134 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3135
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3136 /* 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]3137 memcpy(scope_txt, h2, itx);
3138 scope_txt[itx] = '\0';
3139 err = invalid_char(scope_txt);
3140 if (err) {
3141 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3142 appctx->ctx.stats.scope_str = 0;
3143 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3144 }
3145 break;
3146 }
3147 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3148
3149 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3150 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3151 int ret = 1;
3152
3153 if (stats_admin_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3154 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]3155 ret = acl_pass(ret);
3156 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3157 ret = !ret;
3158 }
3159
3160 if (ret) {
3161 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3162 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3163 break;
3164 }
3165 }
3166
3167 /* Was the status page requested with a POST ? */
Willy Tarreaub8cdf522015-05-29 01:09:15 +0200[diff] [blame]3168 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3169 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreaucfe7fdd2014-04-26 22:08:32 +0200[diff] [blame]3170 /* we'll need the request body, possibly after sending 100-continue */
Willy Tarreaub8cdf522015-05-29 01:09:15 +0200[diff] [blame]3171 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE)
3172 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3173 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3174 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3175 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3176 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
3177 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]3178 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3179 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3180 else {
3181 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3182 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3183 }
3184
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3185 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3186 return 1;
3187}
3188
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3189/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
3190 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
3191 */
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3192void inet_set_tos(int fd, const struct sockaddr_storage *from, int tos)
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3193{
3194#ifdef IP_TOS
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3195 if (from->ss_family == AF_INET)
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3196 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3197#endif
3198#ifdef IPV6_TCLASS
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3199 if (from->ss_family == AF_INET6) {
3200 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)from)->sin6_addr))
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3201 /* v4-mapped addresses need IP_TOS */
3202 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3203 else
3204 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
3205 }
3206#endif
3207}
3208
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3209int http_transform_header_str(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3210 const char* name, unsigned int name_len,
3211 const char *str, struct my_regex *re,
3212 int action)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3213{
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3214 struct hdr_ctx ctx;
3215 char *buf = msg->chn->buf->p;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3216 struct hdr_idx *idx = &s->txn->hdr_idx;
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3217 int (*http_find_hdr_func)(const char *name, int len, char *sol,
3218 struct hdr_idx *idx, struct hdr_ctx *ctx);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3219 struct chunk *output = get_trash_chunk();
3220
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3221 ctx.idx = 0;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3222
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3223 /* Choose the header browsing function. */
3224 switch (action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3225 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3226 http_find_hdr_func = http_find_header2;
3227 break;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3228 case ACT_HTTP_REPLACE_HDR:
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3229 http_find_hdr_func = http_find_full_header2;
3230 break;
3231 default: /* impossible */
3232 return -1;
3233 }
3234
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3235 while (http_find_hdr_func(name, name_len, buf, idx, &ctx)) {
3236 struct hdr_idx_elem *hdr = idx->v + ctx.idx;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3237 int delta;
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3238 char *val = ctx.line + ctx.val;
3239 char* val_end = val + ctx.vlen;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3240
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3241 if (!regex_exec_match2(re, val, val_end-val, MAX_MATCH, pmatch, 0))
3242 continue;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3243
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3244 output->len = exp_replace(output->str, output->size, val, str, pmatch);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3245 if (output->len == -1)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3246 return -1;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3247
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3248 delta = buffer_replace2(msg->chn->buf, val, val_end, output->str, output->len);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3249
3250 hdr->len += delta;
3251 http_msg_move_end(msg, delta);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3252
3253 /* Adjust the length of the current value of the index. */
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3254 ctx.vlen += delta;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3255 }
3256
3257 return 0;
3258}
3259
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3260static int http_transform_header(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3261 const char* name, unsigned int name_len,
3262 struct list *fmt, struct my_regex *re,
3263 int action)
3264{
3265 struct chunk *replace = get_trash_chunk();
3266
3267 replace->len = build_logline(s, replace->str, replace->size, fmt);
3268 if (replace->len >= replace->size - 1)
3269 return -1;
3270
3271 return http_transform_header_str(s, msg, name, name_len, replace->str, re, action);
3272}
3273
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3274/* Executes the http-request rules <rules> for stream <s>, proxy <px> and
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3275 * transaction <txn>. Returns the verdict of the first rule that prevents
3276 * further processing of the request (auth, deny, ...), and defaults to
3277 * HTTP_RULE_RES_STOP if it executed all rules or stopped on an allow, or
3278 * HTTP_RULE_RES_CONT if the last rule was reached. It may set the TX_CLTARPIT
3279 * on txn->flags if it encounters a tarpit rule.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3280 */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3281enum rule_result
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3282http_req_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3283{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3284 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3285 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3286 struct connection *cli_conn;
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]3287 struct act_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3288 struct hdr_ctx ctx;
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3289 const char *auth_realm;
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3290 int act_flags = 0;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3291
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3292 /* If "the current_rule_list" match the executed rule list, we are in
3293 * resume condition. If a resume is needed it is always in the action
3294 * and never in the ACL or converters. In this case, we initialise the
3295 * current rule, and go to the action execution point.
3296 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3297 if (s->current_rule) {
3298 rule = s->current_rule;
3299 s->current_rule = NULL;
3300 if (s->current_rule_list == rules)
3301 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3302 }
3303 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3304
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3305 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3306
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3307 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3308 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3309 int ret;
3310
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3311 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]3312 ret = acl_pass(ret);
3313
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3314 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3315 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3316
3317 if (!ret) /* condition not matched */
3318 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3319 }
3320
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3321 act_flags |= ACT_FLAG_FIRST;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3322resume_execution:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3323 switch (rule->action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3324 case ACT_ACTION_ALLOW:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3325 return HTTP_RULE_RES_STOP;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3326
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3327 case ACT_ACTION_DENY:
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]3328 txn->rule_deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3329 return HTTP_RULE_RES_DENY;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3330
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3331 case ACT_HTTP_REQ_TARPIT:
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3332 txn->flags |= TX_CLTARPIT;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]3333 txn->rule_deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3334 return HTTP_RULE_RES_DENY;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3335
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3336 case ACT_HTTP_REQ_AUTH:
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3337 /* Auth might be performed on regular http-req rules as well as on stats */
3338 auth_realm = rule->arg.auth.realm;
3339 if (!auth_realm) {
3340 if (px->uri_auth && rules == &px->uri_auth->http_req_rules)
3341 auth_realm = STATS_DEFAULT_REALM;
3342 else
3343 auth_realm = px->id;
3344 }
3345 /* send 401/407 depending on whether we use a proxy or not. We still
3346 * count one error, because normal browsing won't significantly
3347 * increase the counter but brute force attempts will.
3348 */
3349 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, auth_realm);
3350 txn->status = (txn->flags & TX_USE_PX_CONN) ? 407 : 401;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]3351 http_reply_and_close(s, txn->status, &trash);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3352 stream_inc_http_err_ctr(s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3353 return HTTP_RULE_RES_ABRT;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3354
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3355 case ACT_HTTP_REDIR:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3356 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3357 return HTTP_RULE_RES_BADREQ;
3358 return HTTP_RULE_RES_DONE;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3359
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3360 case ACT_HTTP_SET_NICE:
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3361 s->task->nice = rule->arg.nice;
3362 break;
3363
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3364 case ACT_HTTP_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3365 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3366 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]3367 break;
3368
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3369 case ACT_HTTP_SET_MARK:
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3370#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3371 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3372 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]3373#endif
3374 break;
3375
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3376 case ACT_HTTP_SET_LOGL:
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3377 s->logs.level = rule->arg.loglevel;
3378 break;
3379
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3380 case ACT_HTTP_REPLACE_HDR:
3381 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3382 if (http_transform_header(s, &txn->req, rule->arg.hdr_add.name,
3383 rule->arg.hdr_add.name_len,
3384 &rule->arg.hdr_add.fmt,
3385 &rule->arg.hdr_add.re, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3386 return HTTP_RULE_RES_BADREQ;
3387 break;
3388
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3389 case ACT_HTTP_DEL_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3390 ctx.idx = 0;
3391 /* remove all occurrences of the header */
3392 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3393 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3394 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3395 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3396 break;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3397
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3398 case ACT_HTTP_SET_HDR:
3399 case ACT_HTTP_ADD_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3400 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3401 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3402 trash.len = rule->arg.hdr_add.name_len;
3403 trash.str[trash.len++] = ':';
3404 trash.str[trash.len++] = ' ';
3405 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]3406
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3407 if (rule->action == ACT_HTTP_SET_HDR) {
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3408 /* remove all occurrences of the header */
3409 ctx.idx = 0;
3410 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3411 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3412 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
3413 }
3414 }
3415
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3416 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3417 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3418
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3419 case ACT_HTTP_DEL_ACL:
3420 case ACT_HTTP_DEL_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3421 struct pat_ref *ref;
3422 char *key;
3423 int len;
3424
3425 /* collect reference */
3426 ref = pat_ref_lookup(rule->arg.map.ref);
3427 if (!ref)
3428 continue;
3429
3430 /* collect key */
3431 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3432 key = trash.str;
3433 key[len] = '\0';
3434
3435 /* perform update */
3436 /* returned code: 1=ok, 0=ko */
3437 pat_ref_delete(ref, key);
3438
3439 break;
3440 }
3441
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3442 case ACT_HTTP_ADD_ACL: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3443 struct pat_ref *ref;
3444 char *key;
3445 struct chunk *trash_key;
3446 int len;
3447
3448 trash_key = get_trash_chunk();
3449
3450 /* collect reference */
3451 ref = pat_ref_lookup(rule->arg.map.ref);
3452 if (!ref)
3453 continue;
3454
3455 /* collect key */
3456 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3457 key = trash_key->str;
3458 key[len] = '\0';
3459
3460 /* perform update */
3461 /* add entry only if it does not already exist */
3462 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3463 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3464
3465 break;
3466 }
3467
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3468 case ACT_HTTP_SET_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3469 struct pat_ref *ref;
3470 char *key, *value;
3471 struct chunk *trash_key, *trash_value;
3472 int len;
3473
3474 trash_key = get_trash_chunk();
3475 trash_value = get_trash_chunk();
3476
3477 /* collect reference */
3478 ref = pat_ref_lookup(rule->arg.map.ref);
3479 if (!ref)
3480 continue;
3481
3482 /* collect key */
3483 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3484 key = trash_key->str;
3485 key[len] = '\0';
3486
3487 /* collect value */
3488 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3489 value = trash_value->str;
3490 value[len] = '\0';
3491
3492 /* perform update */
3493 if (pat_ref_find_elt(ref, key) != NULL)
3494 /* update entry if it exists */
3495 pat_ref_set(ref, key, value, NULL);
3496 else
3497 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3498 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3499
3500 break;
3501 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3502
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3503 case ACT_CUSTOM:
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3504 if ((px->options & PR_O_ABRT_CLOSE) && (s->req.flags & (CF_SHUTR|CF_READ_NULL|CF_READ_ERROR)))
3505 act_flags |= ACT_FLAG_FINAL;
Willy Tarreau39458682015-09-27 10:33:15 +0200[diff] [blame]3506
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3507 switch (rule->action_ptr(rule, px, s->sess, s, act_flags)) {
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3508 case ACT_RET_ERR:
3509 case ACT_RET_CONT:
3510 break;
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3511 case ACT_RET_STOP:
3512 return HTTP_RULE_RES_DONE;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3513 case ACT_RET_YIELD:
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3514 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3515 return HTTP_RULE_RES_YIELD;
3516 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3517 break;
3518
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3519 case ACT_ACTION_TRK_SC0 ... ACT_ACTION_TRK_SCMAX:
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3520 /* Note: only the first valid tracking parameter of each
3521 * applies.
3522 */
3523
3524 if (stkctr_entry(&s->stkctr[http_req_trk_idx(rule->action)]) == NULL) {
3525 struct stktable *t;
3526 struct stksess *ts;
3527 struct stktable_key *key;
3528 void *ptr;
3529
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]3530 t = rule->arg.trk_ctr.table.t;
3531 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]3532
3533 if (key && (ts = stktable_get_entry(t, key))) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3534 stream_track_stkctr(&s->stkctr[http_req_trk_idx(rule->action)], t, ts);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3535
3536 /* let's count a new HTTP request as it's the first time we do it */
3537 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT);
3538 if (ptr)
3539 stktable_data_cast(ptr, http_req_cnt)++;
3540
3541 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE);
3542 if (ptr)
3543 update_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
3544 t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1);
3545
3546 stkctr_set_flags(&s->stkctr[http_req_trk_idx(rule->action)], STKCTR_TRACK_CONTENT);
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3547 if (sess->fe != s->be)
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3548 stkctr_set_flags(&s->stkctr[http_req_trk_idx(rule->action)], STKCTR_TRACK_BACKEND);
3549 }
3550 }
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3551 break;
3552
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3553 case ACT_HTTP_REQ_SET_SRC:
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3554 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn)) {
3555 struct sample *smp;
3556
Thierry FOURNIERa002dc92015-07-31 08:50:51 +0200[diff] [blame]3557 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]3558
3559 if (smp) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]3560 if (smp->data.type == SMP_T_IPV4) {
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3561 ((struct sockaddr_in *)&cli_conn->addr.from)->sin_family = AF_INET;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]3562 ((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]3563 ((struct sockaddr_in *)&cli_conn->addr.from)->sin_port = 0;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]3564 } else if (smp->data.type == SMP_T_IPV6) {
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3565 ((struct sockaddr_in6 *)&cli_conn->addr.from)->sin6_family = AF_INET6;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]3566 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]3567 ((struct sockaddr_in6 *)&cli_conn->addr.from)->sin6_port = 0;
3568 }
3569 }
3570 }
3571 break;
Thierry FOURNIER22e49012015-08-05 19:13:48 +0200[diff] [blame]3572
3573 /* other flags exists, but normaly, they never be matched. */
3574 default:
3575 break;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3576 }
3577 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3578
3579 /* we reached the end of the rules, nothing to report */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3580 return HTTP_RULE_RES_CONT;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3581}
3582
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3583
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3584/* Executes the http-response rules <rules> for stream <s> and proxy <px>. It
3585 * returns one of 5 possible statuses: HTTP_RULE_RES_CONT, HTTP_RULE_RES_STOP,
3586 * HTTP_RULE_RES_DONE, HTTP_RULE_RES_YIELD, or HTTP_RULE_RES_BADREQ. If *CONT
3587 * is returned, the process can continue the evaluation of next rule list. If
3588 * *STOP or *DONE is returned, the process must stop the evaluation. If *BADREQ
3589 * is returned, it means the operation could not be processed and a server error
3590 * must be returned. It may set the TX_SVDENY on txn->flags if it encounters a
3591 * deny rule. If *YIELD is returned, the caller must call again the function
3592 * with the same context.
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3593 */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3594static enum rule_result
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3595http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s)
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3596{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3597 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3598 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3599 struct connection *cli_conn;
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]3600 struct act_rule *rule;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3601 struct hdr_ctx ctx;
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3602 int act_flags = 0;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3603
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3604 /* If "the current_rule_list" match the executed rule list, we are in
3605 * resume condition. If a resume is needed it is always in the action
3606 * and never in the ACL or converters. In this case, we initialise the
3607 * current rule, and go to the action execution point.
3608 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3609 if (s->current_rule) {
3610 rule = s->current_rule;
3611 s->current_rule = NULL;
3612 if (s->current_rule_list == rules)
3613 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3614 }
3615 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3616
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3617 list_for_each_entry(rule, rules, list) {
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3618
3619 /* check optional condition */
3620 if (rule->cond) {
3621 int ret;
3622
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3623 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]3624 ret = acl_pass(ret);
3625
3626 if (rule->cond->pol == ACL_COND_UNLESS)
3627 ret = !ret;
3628
3629 if (!ret) /* condition not matched */
3630 continue;
3631 }
3632
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3633 act_flags |= ACT_FLAG_FIRST;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3634resume_execution:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3635 switch (rule->action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3636 case ACT_ACTION_ALLOW:
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3637 return HTTP_RULE_RES_STOP; /* "allow" rules are OK */
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3638
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3639 case ACT_ACTION_DENY:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3640 txn->flags |= TX_SVDENY;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3641 return HTTP_RULE_RES_STOP;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3642
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3643 case ACT_HTTP_SET_NICE:
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3644 s->task->nice = rule->arg.nice;
3645 break;
3646
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3647 case ACT_HTTP_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3648 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3649 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]3650 break;
3651
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3652 case ACT_HTTP_SET_MARK:
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3653#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3654 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3655 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]3656#endif
3657 break;
3658
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3659 case ACT_HTTP_SET_LOGL:
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3660 s->logs.level = rule->arg.loglevel;
3661 break;
3662
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3663 case ACT_HTTP_REPLACE_HDR:
3664 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3665 if (http_transform_header(s, &txn->rsp, rule->arg.hdr_add.name,
3666 rule->arg.hdr_add.name_len,
3667 &rule->arg.hdr_add.fmt,
3668 &rule->arg.hdr_add.re, rule->action))
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3669 return HTTP_RULE_RES_STOP; /* note: we should report an error here */
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3670 break;
3671
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3672 case ACT_HTTP_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3673 ctx.idx = 0;
3674 /* remove all occurrences of the header */
3675 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3676 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3677 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3678 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3679 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3680
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3681 case ACT_HTTP_SET_HDR:
3682 case ACT_HTTP_ADD_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3683 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3684 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3685 trash.len = rule->arg.hdr_add.name_len;
3686 trash.str[trash.len++] = ':';
3687 trash.str[trash.len++] = ' ';
3688 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]3689
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3690 if (rule->action == ACT_HTTP_SET_HDR) {
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3691 /* remove all occurrences of the header */
3692 ctx.idx = 0;
3693 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3694 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3695 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3696 }
3697 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3698 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3699 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3700
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3701 case ACT_HTTP_DEL_ACL:
3702 case ACT_HTTP_DEL_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3703 struct pat_ref *ref;
3704 char *key;
3705 int len;
3706
3707 /* collect reference */
3708 ref = pat_ref_lookup(rule->arg.map.ref);
3709 if (!ref)
3710 continue;
3711
3712 /* collect key */
3713 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3714 key = trash.str;
3715 key[len] = '\0';
3716
3717 /* perform update */
3718 /* returned code: 1=ok, 0=ko */
3719 pat_ref_delete(ref, key);
3720
3721 break;
3722 }
3723
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3724 case ACT_HTTP_ADD_ACL: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3725 struct pat_ref *ref;
3726 char *key;
3727 struct chunk *trash_key;
3728 int len;
3729
3730 trash_key = get_trash_chunk();
3731
3732 /* collect reference */
3733 ref = pat_ref_lookup(rule->arg.map.ref);
3734 if (!ref)
3735 continue;
3736
3737 /* collect key */
3738 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3739 key = trash_key->str;
3740 key[len] = '\0';
3741
3742 /* perform update */
3743 /* check if the entry already exists */
3744 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3745 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3746
3747 break;
3748 }
3749
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3750 case ACT_HTTP_SET_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3751 struct pat_ref *ref;
3752 char *key, *value;
3753 struct chunk *trash_key, *trash_value;
3754 int len;
3755
3756 trash_key = get_trash_chunk();
3757 trash_value = get_trash_chunk();
3758
3759 /* collect reference */
3760 ref = pat_ref_lookup(rule->arg.map.ref);
3761 if (!ref)
3762 continue;
3763
3764 /* collect key */
3765 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3766 key = trash_key->str;
3767 key[len] = '\0';
3768
3769 /* collect value */
3770 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3771 value = trash_value->str;
3772 value[len] = '\0';
3773
3774 /* perform update */
3775 if (pat_ref_find_elt(ref, key) != NULL)
3776 /* update entry if it exists */
3777 pat_ref_set(ref, key, value, NULL);
3778 else
3779 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3780 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3781
3782 break;
3783 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3784
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3785 case ACT_HTTP_REDIR:
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3786 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3787 return HTTP_RULE_RES_BADREQ;
3788 return HTTP_RULE_RES_DONE;
3789
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3790 case ACT_CUSTOM:
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3791 if ((px->options & PR_O_ABRT_CLOSE) && (s->req.flags & (CF_SHUTR|CF_READ_NULL|CF_READ_ERROR)))
3792 act_flags |= ACT_FLAG_FINAL;
Willy Tarreau39458682015-09-27 10:33:15 +0200[diff] [blame]3793
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3794 switch (rule->action_ptr(rule, px, s->sess, s, act_flags)) {
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3795 case ACT_RET_ERR:
3796 case ACT_RET_CONT:
3797 break;
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3798 case ACT_RET_STOP:
3799 return HTTP_RULE_RES_STOP;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3800 case ACT_RET_YIELD:
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3801 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3802 return HTTP_RULE_RES_YIELD;
3803 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3804 break;
3805
Thierry FOURNIER22e49012015-08-05 19:13:48 +0200[diff] [blame]3806 /* other flags exists, but normaly, they never be matched. */
3807 default:
3808 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3809 }
3810 }
3811
3812 /* we reached the end of the rules, nothing to report */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3813 return HTTP_RULE_RES_CONT;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3814}
3815
3816
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3817/* Perform an HTTP redirect based on the information in <rule>. The function
3818 * returns non-zero on success, or zero in case of a, irrecoverable error such
3819 * as too large a request to build a valid response.
3820 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3821static 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]3822{
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3823 struct http_msg *req = &txn->req;
3824 struct http_msg *res = &txn->rsp;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3825 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3826 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3827
3828 /* build redirect message */
3829 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3830 case 308:
3831 msg_fmt = HTTP_308;
3832 break;
3833 case 307:
3834 msg_fmt = HTTP_307;
3835 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3836 case 303:
3837 msg_fmt = HTTP_303;
3838 break;
3839 case 301:
3840 msg_fmt = HTTP_301;
3841 break;
3842 case 302:
3843 default:
3844 msg_fmt = HTTP_302;
3845 break;
3846 }
3847
3848 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3849 return 0;
3850
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3851 location = trash.str + trash.len;
3852
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3853 switch(rule->type) {
3854 case REDIRECT_TYPE_SCHEME: {
3855 const char *path;
3856 const char *host;
3857 struct hdr_ctx ctx;
3858 int pathlen;
3859 int hostlen;
3860
3861 host = "";
3862 hostlen = 0;
3863 ctx.idx = 0;
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3864 if (http_find_header2("Host", 4, req->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3865 host = ctx.line + ctx.val;
3866 hostlen = ctx.vlen;
3867 }
3868
3869 path = http_get_path(txn);
3870 /* build message using path */
3871 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3872 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]3873 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3874 int qs = 0;
3875 while (qs < pathlen) {
3876 if (path[qs] == '?') {
3877 pathlen = qs;
3878 break;
3879 }
3880 qs++;
3881 }
3882 }
3883 } else {
3884 path = "/";
3885 pathlen = 1;
3886 }
3887
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3888 if (rule->rdr_str) { /* this is an old "redirect" rule */
3889 /* check if we can add scheme + "://" + host + path */
3890 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3891 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3892
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3893 /* add scheme */
3894 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3895 trash.len += rule->rdr_len;
3896 }
3897 else {
3898 /* add scheme with executing log format */
3899 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]3900
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3901 /* check if we can add scheme + "://" + host + path */
3902 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
3903 return 0;
3904 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3905 /* add "://" */
3906 memcpy(trash.str + trash.len, "://", 3);
3907 trash.len += 3;
3908
3909 /* add host */
3910 memcpy(trash.str + trash.len, host, hostlen);
3911 trash.len += hostlen;
3912
3913 /* add path */
3914 memcpy(trash.str + trash.len, path, pathlen);
3915 trash.len += pathlen;
3916
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3917 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3918 if (trash.len && trash.str[trash.len - 1] != '/' &&
3919 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3920 if (trash.len > trash.size - 5)
3921 return 0;
3922 trash.str[trash.len] = '/';
3923 trash.len++;
3924 }
3925
3926 break;
3927 }
3928 case REDIRECT_TYPE_PREFIX: {
3929 const char *path;
3930 int pathlen;
3931
3932 path = http_get_path(txn);
3933 /* build message using path */
3934 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3935 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]3936 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3937 int qs = 0;
3938 while (qs < pathlen) {
3939 if (path[qs] == '?') {
3940 pathlen = qs;
3941 break;
3942 }
3943 qs++;
3944 }
3945 }
3946 } else {
3947 path = "/";
3948 pathlen = 1;
3949 }
3950
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3951 if (rule->rdr_str) { /* this is an old "redirect" rule */
3952 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
3953 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3954
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3955 /* add prefix. Note that if prefix == "/", we don't want to
3956 * add anything, otherwise it makes it hard for the user to
3957 * configure a self-redirection.
3958 */
3959 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
3960 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3961 trash.len += rule->rdr_len;
3962 }
3963 }
3964 else {
3965 /* add prefix with executing log format */
3966 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
3967
3968 /* Check length */
3969 if (trash.len + pathlen > trash.size - 4)
3970 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3971 }
3972
3973 /* add path */
3974 memcpy(trash.str + trash.len, path, pathlen);
3975 trash.len += pathlen;
3976
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3977 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3978 if (trash.len && trash.str[trash.len - 1] != '/' &&
3979 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3980 if (trash.len > trash.size - 5)
3981 return 0;
3982 trash.str[trash.len] = '/';
3983 trash.len++;
3984 }
3985
3986 break;
3987 }
3988 case REDIRECT_TYPE_LOCATION:
3989 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3990 if (rule->rdr_str) { /* this is an old "redirect" rule */
3991 if (trash.len + rule->rdr_len > trash.size - 4)
3992 return 0;
3993
3994 /* add location */
3995 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3996 trash.len += rule->rdr_len;
3997 }
3998 else {
3999 /* add location with executing log format */
4000 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]4001
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4002 /* Check left length */
4003 if (trash.len > trash.size - 4)
4004 return 0;
4005 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4006 break;
4007 }
4008
4009 if (rule->cookie_len) {
4010 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
4011 trash.len += 14;
4012 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
4013 trash.len += rule->cookie_len;
4014 memcpy(trash.str + trash.len, "\r\n", 2);
4015 trash.len += 2;
4016 }
4017
4018 /* add end of headers and the keep-alive/close status.
4019 * We may choose to set keep-alive if the Location begins
4020 * with a slash, because the client will come back to the
4021 * same server.
4022 */
4023 txn->status = rule->code;
4024 /* let's log the request time */
4025 s->logs.tv_request = now;
4026
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4027 if (*location == '/' &&
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4028 (req->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau2de8a502015-05-28 17:23:54 +0200[diff] [blame]4029 ((!(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]4030 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
4031 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
4032 /* keep-alive possible */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4033 if (!(req->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4034 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4035 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
4036 trash.len += 30;
4037 } else {
4038 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
4039 trash.len += 24;
4040 }
4041 }
4042 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
4043 trash.len += 4;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]4044 FLT_STRM_CB(s, flt_http_reply(s, txn->status, &trash));
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4045 bo_inject(res->chn, trash.str, trash.len);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4046 /* "eat" the request */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4047 bi_fast_delete(req->chn->buf, req->sov);
4048 req->next -= req->sov;
4049 req->sov = 0;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4050 s->req.analysers = AN_REQ_HTTP_XFER_BODY | (s->req.analysers & AN_FLT_END);
4051 s->res.analysers = AN_RES_HTTP_XFER_BODY | (s->req.analysers & AN_FLT_END);
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4052 req->msg_state = HTTP_MSG_CLOSED;
4053 res->msg_state = HTTP_MSG_DONE;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]4054 /* Trim any possible response */
4055 res->chn->buf->i = 0;
4056 res->next = res->sov = 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4057 } else {
4058 /* keep-alive not possible */
4059 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4060 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
4061 trash.len += 29;
4062 } else {
4063 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
4064 trash.len += 23;
4065 }
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4066 http_reply_and_close(s, txn->status, &trash);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4067 req->chn->analysers &= AN_FLT_END;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4068 }
4069
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4070 if (!(s->flags & SF_ERR_MASK))
4071 s->flags |= SF_ERR_LOCAL;
4072 if (!(s->flags & SF_FINST_MASK))
4073 s->flags |= SF_FINST_R;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4074
4075 return 1;
4076}
4077
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4078/* This stream analyser runs all HTTP request processing which is common to
4079 * frontends and backends, which means blocking ACLs, filters, connection-close,
4080 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4081 * 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]4082 * either needs more data or wants to immediately abort the request (eg: deny,
4083 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4084 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4085int 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]4086{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4087 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4088 struct http_txn *txn = s->txn;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4089 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4090 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]4091 struct cond_wordlist *wl;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4092 enum rule_result verdict;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4093
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4094 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4095 /* we need more data */
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4096 goto return_prx_yield;
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4097 }
4098
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4099 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]4100 now_ms, __FUNCTION__,
4101 s,
4102 req,
4103 req->rex, req->wex,
4104 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4105 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4106 req->analysers);
4107
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4108 /* just in case we have some per-backend tracking */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4109 stream_inc_be_http_req_ctr(s);
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4110
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4111 /* evaluate http-request rules */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4112 if (!LIST_ISEMPTY(&px->http_req_rules)) {
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]4113 verdict = http_req_get_intercept_rule(px, &px->http_req_rules, s);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]4114
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4115 switch (verdict) {
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4116 case HTTP_RULE_RES_YIELD: /* some data miss, call the function later. */
4117 goto return_prx_yield;
4118
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4119 case HTTP_RULE_RES_CONT:
4120 case HTTP_RULE_RES_STOP: /* nothing to do */
4121 break;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4122
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4123 case HTTP_RULE_RES_DENY: /* deny or tarpit */
4124 if (txn->flags & TX_CLTARPIT)
4125 goto tarpit;
4126 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4127
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4128 case HTTP_RULE_RES_ABRT: /* abort request, response already sent. Eg: auth */
4129 goto return_prx_cond;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4130
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4131 case HTTP_RULE_RES_DONE: /* OK, but terminate request processing (eg: redirect) */
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4132 goto done;
4133
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4134 case HTTP_RULE_RES_BADREQ: /* failed with a bad request */
4135 goto return_bad_req;
4136 }
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4137 }
4138
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4139 /* OK at this stage, we know that the request was accepted according to
4140 * the http-request rules, we can check for the stats. Note that the
4141 * URI is detected *before* the req* rules in order not to be affected
4142 * by a possible reqrep, while they are processed *after* so that a
4143 * reqdeny can still block them. This clearly needs to change in 1.6!
4144 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4145 if (stats_check_uri(&s->si[1], txn, px)) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4146 s->target = &http_stats_applet.obj_type;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4147 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target)))) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4148 txn->status = 500;
4149 s->logs.tv_request = now;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4150 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]4151
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4152 if (!(s->flags & SF_ERR_MASK))
4153 s->flags |= SF_ERR_RESOURCE;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4154 goto return_prx_cond;
4155 }
4156
4157 /* parse the whole stats request and extract the relevant information */
4158 http_handle_stats(s, req);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]4159 verdict = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4160 /* not all actions implemented: deny, allow, auth */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4161
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4162 if (verdict == HTTP_RULE_RES_DENY) /* stats http-request deny */
4163 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4164
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4165 if (verdict == HTTP_RULE_RES_ABRT) /* stats auth / stats http-request auth */
4166 goto return_prx_cond;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]4167 }
4168
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4169 /* evaluate the req* rules except reqadd */
4170 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]4171 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4172 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4173
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4174 if (txn->flags & TX_CLDENY)
4175 goto deny;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]4176
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4177 if (txn->flags & TX_CLTARPIT)
4178 goto tarpit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4179 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4180
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4181 /* add request headers from the rule sets in the same order */
4182 list_for_each_entry(wl, &px->req_add, list) {
4183 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4184 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]4185 ret = acl_pass(ret);
4186 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
4187 ret = !ret;
4188 if (!ret)
4189 continue;
4190 }
4191
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4192 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4193 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]4194 }
4195
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4196
4197 /* Proceed with the stats now. */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]4198 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]4199 /* process the stats request now */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4200 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
4201 sess->fe->fe_counters.intercepted_req++;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4202
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4203 if (!(s->flags & SF_ERR_MASK)) // this is not really an error but it is
4204 s->flags |= SF_ERR_LOCAL; // to mark that it comes from the proxy
4205 if (!(s->flags & SF_FINST_MASK))
4206 s->flags |= SF_FINST_R;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4207
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4208 /* enable the minimally required analyzers to handle keep-alive and compression on the HTTP response */
Christopher Faulet309c6412015-12-02 09:57:32 +0100[diff] [blame]4209 req->analysers &= (AN_REQ_HTTP_BODY | AN_FLT_HTTP_HDRS | AN_FLT_END);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4210 req->analysers &= ~AN_FLT_XFER_DATA;
4211 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4212 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4213 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4214
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4215 /* check whether we have some ACLs set to redirect this request */
4216 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4217 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4218 int ret;
4219
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4220 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]4221 ret = acl_pass(ret);
4222 if (rule->cond->pol == ACL_COND_UNLESS)
4223 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4224 if (!ret)
4225 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4226 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4227 if (!http_apply_redirect_rule(rule, s, txn))
4228 goto return_bad_req;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4229 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4230 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4231
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4232 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
4233 * If this happens, then the data will not come immediately, so we must
4234 * send all what we have without waiting. Note that due to the small gain
4235 * 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]4236 * 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]4237 * itself once used.
4238 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4239 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4240
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4241 done: /* done with this analyser, continue with next ones that the calling
4242 * points will have set, if any.
4243 */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4244 req->analyse_exp = TICK_ETERNITY;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4245 done_without_exp: /* done with this analyser, but dont reset the analyse_exp. */
4246 req->analysers &= ~an_bit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4247 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4248
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4249 tarpit:
4250 /* When a connection is tarpitted, we use the tarpit timeout,
4251 * which may be the same as the connect timeout if unspecified.
4252 * If unset, then set it to zero because we really want it to
4253 * eventually expire. We build the tarpit as an analyser.
4254 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4255 channel_erase(&s->req);
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4256
4257 /* wipe the request out so that we can drop the connection early
4258 * if the client closes first.
4259 */
4260 channel_dont_connect(req);
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]4261
4262 /* Allow cookie logging
4263 */
4264 if (s->be->cookie_name || sess->fe->capture_name)
4265 manage_client_side_cookies(s, req);
4266
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4267 req->analysers &= AN_FLT_END; /* remove switching rules etc... */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4268 req->analysers |= AN_REQ_HTTP_TARPIT;
4269 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
4270 if (!req->analyse_exp)
4271 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4272 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4273 sess->fe->fe_counters.denied_req++;
4274 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4275 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4276 if (sess->listener->counters)
4277 sess->listener->counters->denied_req++;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4278 goto done_without_exp;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4279
4280 deny: /* this request was blocked (denied) */
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]4281
4282 /* Allow cookie logging
4283 */
4284 if (s->be->cookie_name || sess->fe->capture_name)
4285 manage_client_side_cookies(s, req);
4286
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4287 txn->flags |= TX_CLDENY;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]4288 txn->status = http_err_codes[txn->rule_deny_status];
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4289 s->logs.tv_request = now;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4290 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]4291 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4292 sess->fe->fe_counters.denied_req++;
4293 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4294 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4295 if (sess->listener->counters)
4296 sess->listener->counters->denied_req++;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4297 goto return_prx_cond;
4298
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4299 return_bad_req:
4300 /* We centralize bad requests processing here */
4301 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
4302 /* we detected a parsing error. We want to archive this request
4303 * in the dedicated proxy area for later troubleshooting.
4304 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4305 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]4306 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4307
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4308 txn->req.msg_state = HTTP_MSG_ERROR;
4309 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4310 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]4311
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4312 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4313 if (sess->listener->counters)
4314 sess->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4315
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4316 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4317 if (!(s->flags & SF_ERR_MASK))
4318 s->flags |= SF_ERR_PRXCOND;
4319 if (!(s->flags & SF_FINST_MASK))
4320 s->flags |= SF_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]4321
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4322 req->analysers &= AN_FLT_END;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4323 req->analyse_exp = TICK_ETERNITY;
4324 return 0;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4325
4326 return_prx_yield:
4327 channel_dont_connect(req);
4328 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4329}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4330
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4331/* This function performs all the processing enabled for the current request.
4332 * It returns 1 if the processing can continue on next analysers, or zero if it
4333 * needs more data, encounters an error, or wants to immediately abort the
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4334 * request. It relies on buffers flags, and updates s->req.analysers.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4335 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4336int http_process_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4337{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4338 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4339 struct http_txn *txn = s->txn;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4340 struct http_msg *msg = &txn->req;
Willy Tarreauee335e62015-04-21 18:15:13 +0200[diff] [blame]4341 struct connection *cli_conn = objt_conn(strm_sess(s)->origin);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4342
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4343 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4344 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4345 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4346 return 0;
4347 }
4348
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4349 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]4350 now_ms, __FUNCTION__,
4351 s,
4352 req,
4353 req->rex, req->wex,
4354 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4355 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4356 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4357
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4358 /*
4359 * Right now, we know that we have processed the entire headers
4360 * and that unwanted requests have been filtered out. We can do
4361 * whatever we want with the remaining request. Also, now we
4362 * may have separate values for ->fe, ->be.
4363 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4364
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4365 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4366 * If HTTP PROXY is set we simply get remote server address parsing
4367 * incoming request. Note that this requires that a connection is
4368 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4369 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4370 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SF_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4371 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4372 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4373
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]4374 /* Note that for now we don't reuse existing proxy connections */
Willy Tarreau973a5422015-08-05 21:47:23 +0200[diff] [blame]4375 if (unlikely((conn = si_alloc_conn(&s->si[1])) == NULL)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4376 txn->req.msg_state = HTTP_MSG_ERROR;
4377 txn->status = 500;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4378 req->analysers &= AN_FLT_END;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4379 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_500));
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4380
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4381 if (!(s->flags & SF_ERR_MASK))
4382 s->flags |= SF_ERR_RESOURCE;
4383 if (!(s->flags & SF_FINST_MASK))
4384 s->flags |= SF_FINST_R;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4385
4386 return 0;
4387 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4388
4389 path = http_get_path(txn);
4390 url2sa(req->buf->p + msg->sl.rq.u,
4391 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]4392 &conn->addr.to, NULL);
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4393 /* if the path was found, we have to remove everything between
4394 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
4395 * found, we need to replace from req->buf->p + msg->sl.rq.u for
4396 * u_l characters by a single "/".
4397 */
4398 if (path) {
4399 char *cur_ptr = req->buf->p;
4400 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4401 int delta;
4402
4403 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
4404 http_msg_move_end(&txn->req, delta);
4405 cur_end += delta;
4406 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4407 goto return_bad_req;
4408 }
4409 else {
4410 char *cur_ptr = req->buf->p;
4411 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4412 int delta;
4413
4414 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
4415 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
4416 http_msg_move_end(&txn->req, delta);
4417 cur_end += delta;
4418 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4419 goto return_bad_req;
4420 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4421 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4422
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4423 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4424 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4425 * Note that doing so might move headers in the request, but
4426 * the fields will stay coherent and the URI will not move.
4427 * This should only be performed in the backend.
4428 */
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]4429 if (s->be->cookie_name || sess->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4430 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]4431
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4432 /* add unique-id if "header-unique-id" is specified */
4433
Thierry Fournierf4011dd2016-03-29 17:23:51 +0200[diff] [blame]4434 if (!LIST_ISEMPTY(&sess->fe->format_unique_id) && !s->unique_id) {
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4435 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
4436 goto return_bad_req;
4437 s->unique_id[0] = '\0';
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4438 build_logline(s, s->unique_id, UNIQUEID_LEN, &sess->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4439 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4440
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4441 if (sess->fe->header_unique_id && s->unique_id) {
4442 chunk_printf(&trash, "%s: %s", sess->fe->header_unique_id, s->unique_id);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4443 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4444 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4445 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]4446 goto return_bad_req;
4447 }
4448
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4449 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4450 * 9: add X-Forwarded-For if either the frontend or the backend
4451 * asks for it.
4452 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4453 if ((sess->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4454 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4455 if (!((sess->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
4456 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : sess->fe->fwdfor_hdr_name,
4457 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]4458 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4459 /* The header is set to be added only if none is present
4460 * and we found it, so don't do anything.
4461 */
4462 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4463 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4464 /* Add an X-Forwarded-For header unless the source IP is
4465 * in the 'except' network range.
4466 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4467 if ((!sess->fe->except_mask.s_addr ||
4468 (((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr & sess->fe->except_mask.s_addr)
4469 != sess->fe->except_net.s_addr) &&
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4470 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4471 (((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]4472 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4473 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4474 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4475 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4476
4477 /* Note: we rely on the backend to get the header name to be used for
4478 * x-forwarded-for, because the header is really meant for the backends.
4479 * However, if the backend did not specify any option, we have to rely
4480 * on the frontend's header name.
4481 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4482 if (s->be->fwdfor_hdr_len) {
4483 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4484 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4485 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4486 len = sess->fe->fwdfor_hdr_len;
4487 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4488 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4489 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]4490
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4491 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]4492 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4493 }
4494 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4495 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4496 /* FIXME: for the sake of completeness, we should also support
4497 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4498 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4499 int len;
4500 char pn[INET6_ADDRSTRLEN];
4501 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4502 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4503 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4504
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4505 /* Note: we rely on the backend to get the header name to be used for
4506 * x-forwarded-for, because the header is really meant for the backends.
4507 * However, if the backend did not specify any option, we have to rely
4508 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4509 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4510 if (s->be->fwdfor_hdr_len) {
4511 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4512 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4513 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4514 len = sess->fe->fwdfor_hdr_len;
4515 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4516 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4517 len += snprintf(trash.str + len, trash.size - len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4518
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4519 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]4520 goto return_bad_req;
4521 }
4522 }
4523
4524 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4525 * 10: add X-Original-To if either the frontend or the backend
4526 * asks for it.
4527 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4528 if ((sess->fe->options | s->be->options) & PR_O_ORGTO) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4529
4530 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4531 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4532 /* Add an X-Original-To header unless the destination IP is
4533 * in the 'except' network range.
4534 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4535 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4536
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4537 if (cli_conn->addr.to.ss_family == AF_INET &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4538 ((!sess->fe->except_mask_to.s_addr ||
4539 (((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr.s_addr & sess->fe->except_mask_to.s_addr)
4540 != sess->fe->except_to.s_addr) &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4541 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4542 (((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]4543 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4544 int len;
4545 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4546 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4547
4548 /* Note: we rely on the backend to get the header name to be used for
4549 * x-original-to, because the header is really meant for the backends.
4550 * However, if the backend did not specify any option, we have to rely
4551 * on the frontend's header name.
4552 */
4553 if (s->be->orgto_hdr_len) {
4554 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4555 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4556 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4557 len = sess->fe->orgto_hdr_len;
4558 memcpy(trash.str, sess->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4559 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4560 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]4561
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4562 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]4563 goto return_bad_req;
4564 }
4565 }
4566 }
4567
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4568 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
4569 * If an "Upgrade" token is found, the header is left untouched in order not to have
4570 * to deal with some servers bugs : some of them fail an Upgrade if anything but
4571 * "Upgrade" is present in the Connection header.
4572 */
4573 if (!(txn->flags & TX_HDR_CONN_UPG) &&
4574 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4575 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4576 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4577 unsigned int want_flags = 0;
4578
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4579 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4580 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4581 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4582 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4583 !((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4584 want_flags |= TX_CON_CLO_SET;
4585 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4586 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4587 ((sess->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4588 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4589 ((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4590 want_flags |= TX_CON_KAL_SET;
4591 }
4592
4593 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4594 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4595 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4596
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4597
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4598 /* If we have no server assigned yet and we're balancing on url_param
4599 * with a POST request, we may be interested in checking the body for
4600 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4601 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4602 if (!(s->flags & (SF_ASSIGNED|SF_DIRECT)) &&
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4603 s->txn->meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4604 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4605 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4606 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4607 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4608
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4609 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4610 req->analysers &= ~AN_FLT_XFER_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4611 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4612#ifdef TCP_QUICKACK
4613 /* We expect some data from the client. Unless we know for sure
4614 * we already have a full request, we have to re-enable quick-ack
4615 * in case we previously disabled it, otherwise we might cause
4616 * the client to delay further data.
4617 */
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4618 if ((sess->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]4619 cli_conn && conn_ctrl_ready(cli_conn) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4620 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4621 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4622 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4623#endif
4624 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4625
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4626 /*************************************************************
4627 * OK, that's finished for the headers. We have done what we *
4628 * could. Let's switch to the DATA state. *
4629 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4630 req->analyse_exp = TICK_ETERNITY;
4631 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4632
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4633 /* if the server closes the connection, we want to immediately react
4634 * and close the socket to save packets and syscalls.
4635 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4636 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4637 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4638
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4639 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4640 /* OK let's go on with the BODY now */
4641 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4642
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4643 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4644 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4645 /* we detected a parsing error. We want to archive this request
4646 * in the dedicated proxy area for later troubleshooting.
4647 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4648 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]4649 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4650
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4651 txn->req.msg_state = HTTP_MSG_ERROR;
4652 txn->status = 400;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4653 req->analysers &= AN_FLT_END;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4654 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]4655
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4656 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4657 if (sess->listener->counters)
4658 sess->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4659
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4660 if (!(s->flags & SF_ERR_MASK))
4661 s->flags |= SF_ERR_PRXCOND;
4662 if (!(s->flags & SF_FINST_MASK))
4663 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4664 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4665}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4666
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4667/* This function is an analyser which processes the HTTP tarpit. It always
4668 * returns zero, at the beginning because it prevents any other processing
4669 * from occurring, and at the end because it terminates the request.
4670 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4671int http_process_tarpit(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4672{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4673 struct http_txn *txn = s->txn;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4674
4675 /* This connection is being tarpitted. The CLIENT side has
4676 * already set the connect expiration date to the right
4677 * timeout. We just have to check that the client is still
4678 * there and that the timeout has not expired.
4679 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4680 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4681 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4682 !tick_is_expired(req->analyse_exp, now_ms))
4683 return 0;
4684
4685 /* We will set the queue timer to the time spent, just for
4686 * logging purposes. We fake a 500 server error, so that the
4687 * attacker will not suspect his connection has been tarpitted.
4688 * It will not cause trouble to the logs because we can exclude
4689 * the tarpitted connections by filtering on the 'PT' status flags.
4690 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4691 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4692
4693 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4694 if (!(req->flags & CF_READ_ERROR))
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4695 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4696
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4697 req->analysers &= AN_FLT_END;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4698 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4699
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4700 if (!(s->flags & SF_ERR_MASK))
4701 s->flags |= SF_ERR_PRXCOND;
4702 if (!(s->flags & SF_FINST_MASK))
4703 s->flags |= SF_FINST_T;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4704 return 0;
4705}
4706
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4707/* This function is an analyser which waits for the HTTP request body. It waits
4708 * for either the buffer to be full, or the full advertised contents to have
4709 * reached the buffer. It must only be called after the standard HTTP request
4710 * processing has occurred, because it expects the request to be parsed and will
4711 * look for the Expect header. It may send a 100-Continue interim response. It
4712 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
4713 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
4714 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4715 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4716int http_wait_for_request_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4717{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4718 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4719 struct http_txn *txn = s->txn;
4720 struct http_msg *msg = &s->txn->req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4721
4722 /* We have to parse the HTTP request body to find any required data.
4723 * "balance url_param check_post" should have been the only way to get
4724 * into this. We were brought here after HTTP header analysis, so all
4725 * related structures are ready.
4726 */
4727
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4728 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
4729 /* This is the first call */
4730 if (msg->msg_state < HTTP_MSG_BODY)
4731 goto missing_data;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4732
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4733 if (msg->msg_state < HTTP_MSG_100_SENT) {
4734 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4735 * send an HTTP/1.1 100 Continue intermediate response.
4736 */
4737 if (msg->flags & HTTP_MSGF_VER_11) {
4738 struct hdr_ctx ctx;
4739 ctx.idx = 0;
4740 /* Expect is allowed in 1.1, look for it */
4741 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
4742 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4743 bo_inject(&s->res, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4744 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4745 }
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4746 msg->msg_state = HTTP_MSG_100_SENT;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4747 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4748
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4749 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4750 * req->buf->p still points to the beginning of the message. We
4751 * must save the body in msg->next because it survives buffer
4752 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4753 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4754 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4755
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4756 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4757 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4758 else
4759 msg->msg_state = HTTP_MSG_DATA;
4760 }
4761
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4762 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
4763 /* We're in content-length mode, we just have to wait for enough data. */
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4764 if (http_body_bytes(msg) < msg->body_len)
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4765 goto missing_data;
4766
4767 /* OK we have everything we need now */
4768 goto http_end;
4769 }
4770
4771 /* OK here we're parsing a chunked-encoded message */
4772
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4773 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4774 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4775 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4776 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4777 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4778 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4779
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4780 if (!ret)
4781 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4782 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4783 stream_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4784 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4785 }
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]4786 msg->next += ret;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4787 msg->msg_state = msg->chunk_len ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4788 }
4789
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4790 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4791 * We have the first data byte is in msg->sov + msg->sol. We're waiting
4792 * for at least a whole chunk or the whole content length bytes after
4793 * msg->sov + msg->sol.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4794 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4795 if (msg->msg_state == HTTP_MSG_TRAILERS)
4796 goto http_end;
4797
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4798 if (http_body_bytes(msg) >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4799 goto http_end;
4800
4801 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4802 /* we get here if we need to wait for more data. If the buffer is full,
4803 * we have the maximum we can expect.
4804 */
4805 if (buffer_full(req->buf, global.tune.maxrewrite))
4806 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4807
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4808 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4809 txn->status = 408;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4810 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4811
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4812 if (!(s->flags & SF_ERR_MASK))
4813 s->flags |= SF_ERR_CLITO;
4814 if (!(s->flags & SF_FINST_MASK))
4815 s->flags |= SF_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4816 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4817 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4818
4819 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4820 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4821 /* Not enough data. We'll re-use the http-request
4822 * timeout here. Ideally, we should set the timeout
4823 * relative to the accept() date. We just set the
4824 * request timeout once at the beginning of the
4825 * request.
4826 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4827 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4828 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4829 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4830 return 0;
4831 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4832
4833 http_end:
4834 /* The situation will not evolve, so let's give up on the analysis. */
4835 s->logs.tv_request = now; /* update the request timer to reflect full request */
4836 req->analysers &= ~an_bit;
4837 req->analyse_exp = TICK_ETERNITY;
4838 return 1;
4839
4840 return_bad_req: /* let's centralize all bad requests */
4841 txn->req.msg_state = HTTP_MSG_ERROR;
4842 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4843 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4844
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4845 if (!(s->flags & SF_ERR_MASK))
4846 s->flags |= SF_ERR_PRXCOND;
4847 if (!(s->flags & SF_FINST_MASK))
4848 s->flags |= SF_FINST_R;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4849
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4850 return_err_msg:
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4851 req->analysers &= AN_FLT_END;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4852 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4853 if (sess->listener->counters)
4854 sess->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4855 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4856}
4857
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4858/* send a server's name with an outgoing request over an established connection.
4859 * Note: this function is designed to be called once the request has been scheduled
4860 * for being forwarded. This is the reason why it rewinds the buffer before
4861 * proceeding.
4862 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4863int 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]4864
4865 struct hdr_ctx ctx;
4866
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4867 char *hdr_name = be->server_id_hdr_name;
4868 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4869 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4870 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4871 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4872
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4873 ctx.idx = 0;
4874
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]4875 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4876 if (old_o) {
4877 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4878 b_rew(chn->buf, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4879 txn->req.next += old_o;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4880 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4881 }
4882
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4883 old_i = chn->buf->i;
4884 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]4885 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4886 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4887 }
4888
4889 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4890 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4891 memcpy(hdr_val, hdr_name, hdr_name_len);
4892 hdr_val += hdr_name_len;
4893 *hdr_val++ = ':';
4894 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4895 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4896 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]4897
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4898 if (old_o) {
4899 /* If this was a forwarded request, we must readjust the amount of
4900 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4901 * variations. Note that the current state is >= HTTP_MSG_BODY,
4902 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4903 */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4904 old_o += chn->buf->i - old_i;
4905 b_adv(chn->buf, old_o);
4906 txn->req.next -= old_o;
4907 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4908 }
4909
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4910 return 0;
4911}
4912
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4913/* Terminate current transaction and prepare a new one. This is very tricky
4914 * right now but it works.
4915 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4916void http_end_txn_clean_session(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4917{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4918 int prev_status = s->txn->status;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]4919 struct proxy *fe = strm_fe(s);
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]4920 struct proxy *be = s->be;
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]4921 struct connection *srv_conn;
4922 struct server *srv;
Willy Tarreau449d74a2015-08-05 17:16:33 +0200[diff] [blame]4923 unsigned int prev_flags = s->txn->flags;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4924
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4925 /* FIXME: We need a more portable way of releasing a backend's and a
4926 * server's connections. We need a safer way to reinitialize buffer
4927 * flags. We also need a more accurate method for computing per-request
4928 * data.
4929 */
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]4930 srv_conn = objt_conn(s->si[1].end);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4931
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4932 /* unless we're doing keep-alive, we want to quickly close the connection
4933 * to the server.
4934 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4935 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4936 !si_conn_ready(&s->si[1])) {
4937 s->si[1].flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
4938 si_shutr(&s->si[1]);
4939 si_shutw(&s->si[1]);
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4940 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4941
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4942 if (s->flags & SF_BE_ASSIGNED) {
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]4943 be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4944 if (unlikely(s->srv_conn))
4945 sess_change_server(s, NULL);
4946 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4947
4948 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4949 stream_process_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4950
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4951 if (s->txn->status) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4952 int n;
4953
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4954 n = s->txn->status / 100;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4955 if (n < 1 || n > 5)
4956 n = 0;
4957
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4958 if (fe->mode == PR_MODE_HTTP) {
4959 fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4960 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4961 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]4962 (be->mode == PR_MODE_HTTP)) {
4963 be->be_counters.p.http.rsp[n]++;
4964 be->be_counters.p.http.cum_req++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4965 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4966 }
4967
4968 /* don't count other requests' data */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4969 s->logs.bytes_in -= s->req.buf->i;
4970 s->logs.bytes_out -= s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4971
4972 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4973 if (!LIST_ISEMPTY(&fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4974 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4975 (!(fe->options & PR_O_NULLNOLOG) || s->req.total)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4976 s->do_log(s);
4977 }
4978
Willy Tarreaud713bcc2014-06-25 15:36:04 +0200[diff] [blame]4979 /* stop tracking content-based counters */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4980 stream_stop_content_counters(s);
4981 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +0200[diff] [blame]4982
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4983 s->logs.accept_date = date; /* user-visible date for logging */
4984 s->logs.tv_accept = now; /* corrected date for internal use */
4985 tv_zero(&s->logs.tv_request);
4986 s->logs.t_queue = -1;
4987 s->logs.t_connect = -1;
4988 s->logs.t_data = -1;
4989 s->logs.t_close = 0;
4990 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4991 s->logs.srv_queue_size = 0; /* we will get this number soon */
4992
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4993 s->logs.bytes_in = s->req.total = s->req.buf->i;
4994 s->logs.bytes_out = s->res.total = s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4995
4996 if (s->pend_pos)
4997 pendconn_free(s->pend_pos);
4998
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4999 if (objt_server(s->target)) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5000 if (s->flags & SF_CURR_SESS) {
5001 s->flags &= ~SF_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5002 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5003 }
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]5004 if (may_dequeue_tasks(objt_server(s->target), be))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5005 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5006 }
5007
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5008 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5009
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5010 /* only release our endpoint if we don't intend to reuse the
5011 * connection.
5012 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5013 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5014 !si_conn_ready(&s->si[1])) {
5015 si_release_endpoint(&s->si[1]);
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5016 srv_conn = NULL;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5017 }
5018
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5019 s->si[1].state = s->si[1].prev_state = SI_ST_INI;
5020 s->si[1].err_type = SI_ET_NONE;
5021 s->si[1].conn_retries = 0; /* used for logging too */
5022 s->si[1].exp = TICK_ETERNITY;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5023 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]5024 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);
5025 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]5026 s->flags &= ~(SF_DIRECT|SF_ASSIGNED|SF_ADDR_SET|SF_BE_ASSIGNED|SF_FORCE_PRST|SF_IGNORE_PRST);
5027 s->flags &= ~(SF_CURR_SESS|SF_REDIRECTABLE|SF_SRV_REUSED);
5028 s->flags &= ~(SF_ERR_MASK|SF_FINST_MASK|SF_REDISP);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]5029
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5030 s->txn->meth = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5031 http_reset_txn(s);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5032 s->txn->flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5033
5034 if (prev_status == 401 || prev_status == 407) {
5035 /* In HTTP keep-alive mode, if we receive a 401, we still have
5036 * a chance of being able to send the visitor again to the same
5037 * server over the same connection. This is required by some
5038 * broken protocols such as NTLM, and anyway whenever there is
5039 * an opportunity for sending the challenge to the proper place,
5040 * it's better to do it (at least it helps with debugging).
5041 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5042 s->txn->flags |= TX_PREFER_LAST;
Willy Tarreaubd99d582015-09-02 10:40:43 +0200[diff] [blame]5043 if (srv_conn)
5044 srv_conn->flags |= CO_FL_PRIVATE;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5045 }
5046
Willy Tarreau53f96852016-02-02 18:50:47 +0100[diff] [blame]5047 /* Never ever allow to reuse a connection from a non-reuse backend */
5048 if (srv_conn && (be->options & PR_O_REUSE_MASK) == PR_O_REUSE_NEVR)
5049 srv_conn->flags |= CO_FL_PRIVATE;
5050
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5051 if (fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5052 s->si[1].flags |= SI_FL_INDEP_STR;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5053
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5054 if (fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5055 s->req.flags |= CF_NEVER_WAIT;
5056 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]5057 }
5058
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5059 /* if the request buffer is not empty, it means we're
5060 * about to process another request, so send pending
5061 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5062 * Just don't do this if the buffer is close to be full,
5063 * because the request will wait for it to flush a little
5064 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5065 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5066 if (s->req.buf->i) {
5067 if (s->res.buf->o &&
5068 !buffer_full(s->res.buf, global.tune.maxrewrite) &&
5069 bi_end(s->res.buf) <= s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)
5070 s->res.flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5071 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5072
Willy Tarreau714ea782015-11-25 20:11:11 +0100[diff] [blame]5073 /* we're removing the analysers, we MUST re-enable events detection.
5074 * We don't enable close on the response channel since it's either
5075 * already closed, or in keep-alive with an idle connection handler.
5076 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5077 channel_auto_read(&s->req);
5078 channel_auto_close(&s->req);
5079 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5080
Willy Tarreau1c59bd52015-11-02 20:20:11 +0100[diff] [blame]5081 /* we're in keep-alive with an idle connection, monitor it if not already done */
5082 if (srv_conn && LIST_ISEMPTY(&srv_conn->list)) {
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5083 srv = objt_server(srv_conn->target);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5084 if (!srv)
5085 si_idle_conn(&s->si[1], NULL);
Willy Tarreau53f96852016-02-02 18:50:47 +0100[diff] [blame]5086 else if (srv_conn->flags & CO_FL_PRIVATE)
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5087 si_idle_conn(&s->si[1], &srv->priv_conns);
Willy Tarreau449d74a2015-08-05 17:16:33 +0200[diff] [blame]5088 else if (prev_flags & TX_NOT_FIRST)
5089 /* note: we check the request, not the connection, but
5090 * this is valid for strategies SAFE and AGGR, and in
5091 * case of ALWS, we don't care anyway.
5092 */
5093 si_idle_conn(&s->si[1], &srv->safe_conns);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5094 else
5095 si_idle_conn(&s->si[1], &srv->idle_conns);
Willy Tarreau4320eaa2015-08-05 11:08:30 +0200[diff] [blame]5096 }
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]5097
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5098 if (HAS_FILTERS(s)) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5099 s->req.analysers &= AN_FLT_END;
5100 s->res.analysers &= AN_FLT_END;
5101 }
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5102 else {
5103 s->req.analysers = strm_li(s) ? strm_li(s)->analysers : 0;
5104 s->res.analysers = 0;
5105 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5106}
5107
5108
5109/* This function updates the request state machine according to the response
5110 * state machine and buffer flags. It returns 1 if it changes anything (flag
5111 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5112 * it is only used to find when a request/response couple is complete. Both
5113 * this function and its equivalent should loop until both return zero. It
5114 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5115 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5116int http_sync_req_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5117{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5118 struct channel *chn = &s->req;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5119 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5120 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5121 unsigned int old_state = txn->req.msg_state;
5122
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5123 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
5124 return 0;
5125
5126 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5127 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5128 * We can shut the read side unless we want to abort_on_close,
5129 * or we have a POST request. The issue with POST requests is
5130 * that some browsers still send a CRLF after the request, and
5131 * this CRLF must be read so that it does not remain in the kernel
5132 * buffers, otherwise a close could cause an RST on some systems
5133 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5134 * Note that if we're using keep-alive on the client side, we'd
5135 * rather poll now and keep the polling enabled for the whole
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5136 * stream's life than enabling/disabling it between each
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5137 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5138 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5139 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5140 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5141 !(s->be->options & PR_O_ABRT_CLOSE) &&
5142 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5143 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5144
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5145 /* if the server closes the connection, we want to immediately react
5146 * and close the socket to save packets and syscalls.
5147 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5148 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5149
Willy Tarreau7f876a12015-11-18 11:59:55 +0100[diff] [blame]5150 /* In any case we've finished parsing the request so we must
5151 * disable Nagle when sending data because 1) we're not going
5152 * to shut this side, and 2) the server is waiting for us to
5153 * send pending data.
5154 */
5155 chn->flags |= CF_NEVER_WAIT;
5156
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5157 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
5158 goto wait_other_side;
5159
5160 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
5161 /* The server has not finished to respond, so we
5162 * don't want to move in order not to upset it.
5163 */
5164 goto wait_other_side;
5165 }
5166
5167 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
5168 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5169 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5170 txn->req.msg_state = HTTP_MSG_TUNNEL;
5171 goto wait_other_side;
5172 }
5173
5174 /* When we get here, it means that both the request and the
5175 * response have finished receiving. Depending on the connection
5176 * mode, we'll have to wait for the last bytes to leave in either
5177 * direction, and sometimes for a close to be effective.
5178 */
5179
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5180 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5181 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5182 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
5183 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5184 }
5185 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5186 /* Option forceclose is set, or either side wants to close,
5187 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5188 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5189 * once both states are CLOSED.
5190 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5191 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5192 channel_shutr_now(chn);
5193 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5194 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5195 }
5196 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5197 /* The last possible modes are keep-alive and tunnel. Tunnel mode
5198 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5199 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5200 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
5201 channel_auto_read(chn);
5202 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5203 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5204 }
5205
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5206 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5207 /* if we've just closed an output, let's switch */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5208 s->si[1].flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5209
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5210 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5211 txn->req.msg_state = HTTP_MSG_CLOSING;
5212 goto http_msg_closing;
5213 }
5214 else {
5215 txn->req.msg_state = HTTP_MSG_CLOSED;
5216 goto http_msg_closed;
5217 }
5218 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5219 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5220 }
5221
5222 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
5223 http_msg_closing:
5224 /* nothing else to forward, just waiting for the output buffer
5225 * to be empty and for the shutw_now to take effect.
5226 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5227 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5228 txn->req.msg_state = HTTP_MSG_CLOSED;
5229 goto http_msg_closed;
5230 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5231 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5232 txn->req.msg_state = HTTP_MSG_ERROR;
5233 goto wait_other_side;
5234 }
5235 }
5236
5237 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
5238 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5239 /* see above in MSG_DONE why we only do this in these states */
5240 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5241 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5242 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]5243 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5244 goto wait_other_side;
5245 }
5246
5247 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5248 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5249}
5250
5251
5252/* This function updates the response state machine according to the request
5253 * state machine and buffer flags. It returns 1 if it changes anything (flag
5254 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5255 * it is only used to find when a request/response couple is complete. Both
5256 * this function and its equivalent should loop until both return zero. It
5257 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5258 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5259int http_sync_res_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5260{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5261 struct channel *chn = &s->res;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5262 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5263 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5264 unsigned int old_state = txn->rsp.msg_state;
5265
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5266 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
5267 return 0;
5268
5269 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
5270 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5271 * still monitor the server connection for a possible close
5272 * while the request is being uploaded, so we don't disable
5273 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5274 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5275 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5276
5277 if (txn->req.msg_state == HTTP_MSG_ERROR)
5278 goto wait_other_side;
5279
5280 if (txn->req.msg_state < HTTP_MSG_DONE) {
5281 /* The client seems to still be sending data, probably
5282 * because we got an error response during an upload.
5283 * We have the choice of either breaking the connection
5284 * or letting it pass through. Let's do the later.
5285 */
5286 goto wait_other_side;
5287 }
5288
5289 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
5290 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5291 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5292 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5293 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5294 goto wait_other_side;
5295 }
5296
5297 /* When we get here, it means that both the request and the
5298 * response have finished receiving. Depending on the connection
5299 * mode, we'll have to wait for the last bytes to leave in either
5300 * direction, and sometimes for a close to be effective.
5301 */
5302
5303 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5304 /* Server-close mode : shut read and wait for the request
5305 * side to close its output buffer. The caller will detect
5306 * when we're in DONE and the other is in CLOSED and will
5307 * catch that for the final cleanup.
5308 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5309 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
5310 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5311 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5312 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5313 /* Option forceclose is set, or either side wants to close,
5314 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5315 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5316 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5317 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5318 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5319 channel_shutr_now(chn);
5320 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5321 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5322 }
5323 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5324 /* The last possible modes are keep-alive and tunnel. Tunnel will
5325 * need to forward remaining data. Keep-alive will need to monitor
5326 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5327 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5328 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5329 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5330 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
5331 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5332 }
5333
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5334 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5335 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5336 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5337 txn->rsp.msg_state = HTTP_MSG_CLOSING;
5338 goto http_msg_closing;
5339 }
5340 else {
5341 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5342 goto http_msg_closed;
5343 }
5344 }
5345 goto wait_other_side;
5346 }
5347
5348 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
5349 http_msg_closing:
5350 /* nothing else to forward, just waiting for the output buffer
5351 * to be empty and for the shutw_now to take effect.
5352 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5353 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5354 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5355 goto http_msg_closed;
5356 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5357 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5358 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5359 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5360 if (objt_server(s->target))
5361 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5362 goto wait_other_side;
5363 }
5364 }
5365
5366 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
5367 http_msg_closed:
5368 /* drop any pending data */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5369 channel_truncate(chn);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5370 channel_auto_close(chn);
5371 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5372 goto wait_other_side;
5373 }
5374
5375 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5376 /* We force the response to leave immediately if we're waiting for the
5377 * other side, since there is no pending shutdown to push it out.
5378 */
5379 if (!channel_is_empty(chn))
5380 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5381 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5382}
5383
5384
5385/* Resync the request and response state machines. Return 1 if either state
5386 * changes.
5387 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5388int http_resync_states(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5389{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5390 struct http_txn *txn = s->txn;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5391 int old_req_state = txn->req.msg_state;
5392 int old_res_state = txn->rsp.msg_state;
5393
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5394 http_sync_req_state(s);
5395 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5396 if (!http_sync_res_state(s))
5397 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5398 if (!http_sync_req_state(s))
5399 break;
5400 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]5401
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5402 /* OK, both state machines agree on a compatible state.
5403 * There are a few cases we're interested in :
5404 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
5405 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
5406 * directions, so let's simply disable both analysers.
5407 * - HTTP_MSG_CLOSED on the response only means we must abort the
5408 * request.
5409 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
5410 * with server-close mode means we've completed one request and we
5411 * must re-initialize the server connection.
5412 */
5413
5414 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
5415 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
5416 (txn->req.msg_state == HTTP_MSG_CLOSED &&
5417 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5418 s->req.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5419 channel_auto_close(&s->req);
5420 channel_auto_read(&s->req);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5421 s->res.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5422 channel_auto_close(&s->res);
5423 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5424 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5425 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5426 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->res.flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]5427 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5428 txn->req.msg_state == HTTP_MSG_ERROR) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5429 s->res.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5430 channel_auto_close(&s->res);
5431 channel_auto_read(&s->res);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5432 s->req.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5433 channel_abort(&s->req);
5434 channel_auto_close(&s->req);
5435 channel_auto_read(&s->req);
5436 channel_truncate(&s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5437 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5438 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
5439 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5440 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5441 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
5442 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
5443 /* server-close/keep-alive: terminate this transaction,
5444 * possibly killing the server connection and reinitialize
Willy Tarreau3de5bd62016-05-02 16:07:07 +0200[diff] [blame]5445 * a fresh-new transaction, but only once we're sure there's
5446 * enough room in the request and response buffer to process
5447 * another request. The request buffer must not hold any
5448 * pending output data and the request buffer must not have
5449 * output data occupying the reserve.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5450 */
Willy Tarreau3de5bd62016-05-02 16:07:07 +0200[diff] [blame]5451 if (s->req.buf->o)
5452 s->req.flags |= CF_WAKE_WRITE;
5453 else if (channel_congested(&s->res))
5454 s->res.flags |= CF_WAKE_WRITE;
5455 else
5456 http_end_txn_clean_session(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5457 }
5458
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5459 return txn->req.msg_state != old_req_state ||
5460 txn->rsp.msg_state != old_res_state;
5461}
5462
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5463/* This function is an analyser which forwards request body (including chunk
5464 * sizes if any). It is called as soon as we must forward, even if we forward
5465 * zero byte. The only situation where it must not be called is when we're in
5466 * tunnel mode and we want to forward till the close. It's used both to forward
5467 * remaining data and to resync after end of body. It expects the msg_state to
5468 * 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]5469 * 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]5470 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5471 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5472 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5473int http_request_forward_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5474{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5475 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5476 struct http_txn *txn = s->txn;
5477 struct http_msg *msg = &s->txn->req;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5478 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5479
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5480 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5481 return 0;
5482
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5483 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]5484 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5485 /* Output closed while we were sending data. We must abort and
5486 * wake the other side up.
5487 */
5488 msg->msg_state = HTTP_MSG_ERROR;
5489 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5490 return 1;
5491 }
5492
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5493 /* Note that we don't have to send 100-continue back because we don't
5494 * need the data to complete our job, and it's up to the server to
5495 * decide whether to return 100, 417 or anything else in return of
5496 * an "Expect: 100-continue" header.
5497 */
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5498 if (msg->msg_state == HTTP_MSG_BODY) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5499 msg->msg_state = ((msg->flags & HTTP_MSGF_TE_CHNK)
5500 ? HTTP_MSG_CHUNK_SIZE
5501 : HTTP_MSG_DATA);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5502
5503 /* TODO/filters: when http-buffer-request option is set or if a
5504 * rule on url_param exists, the first chunk size could be
5505 * already parsed. In that case, msg->next is after the chunk
5506 * size (including the CRLF after the size). So this case should
5507 * be handled to */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5508 }
5509
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5510 /* Some post-connect processing might want us to refrain from starting to
5511 * forward data. Currently, the only reason for this is "balance url_param"
5512 * whichs need to parse/process the request after we've enabled forwarding.
5513 */
5514 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5515 if (!(s->res.flags & CF_READ_ATTACHED)) {
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5516 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +0200[diff] [blame]5517 req->flags |= CF_WAKE_CONNECT;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5518 goto missing_data_or_waiting;
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5519 }
5520 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5521 }
5522
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5523 /* in most states, we should abort in case of early close */
5524 channel_auto_close(req);
5525
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5526 if (req->to_forward) {
5527 /* We can't process the buffer's contents yet */
5528 req->flags |= CF_WAKE_WRITE;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5529 goto missing_data_or_waiting;
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5530 }
5531
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5532 if (msg->msg_state < HTTP_MSG_DONE) {
5533 ret = ((msg->flags & HTTP_MSGF_TE_CHNK)
5534 ? http_msg_forward_chunked_body(s, msg)
5535 : http_msg_forward_body(s, msg));
5536 if (!ret)
5537 goto missing_data_or_waiting;
5538 if (ret < 0)
5539 goto return_bad_req;
5540 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5541
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5542 /* other states, DONE...TUNNEL */
5543 /* we don't want to forward closes on DONE except in tunnel mode. */
5544 if ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5545 channel_dont_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5546
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5547 ret = msg->msg_state;
5548 if (http_resync_states(s)) {
5549 /* some state changes occurred, maybe the analyser
5550 * was disabled too. */
5551 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5552 if (req->flags & CF_SHUTW) {
5553 /* request errors are most likely due to the
5554 * server aborting the transfer. */
5555 goto aborted_xfer;
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5556 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5557 if (msg->err_pos >= 0)
5558 http_capture_bad_message(&sess->fe->invalid_req, s, msg, ret, s->be);
5559 goto return_bad_req;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5560 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5561 return 1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5562 }
5563
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5564 /* If "option abortonclose" is set on the backend, we want to monitor
5565 * the client's connection and forward any shutdown notification to the
5566 * server, which will decide whether to close or to go on processing the
5567 * request. We only do that in tunnel mode, and not in other modes since
5568 * it can be abused to exhaust source ports. */
5569 if (s->be->options & PR_O_ABRT_CLOSE) {
5570 channel_auto_read(req);
5571 if ((req->flags & (CF_SHUTR|CF_READ_NULL)) &&
5572 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN))
5573 s->si[1].flags |= SI_FL_NOLINGER;
5574 channel_auto_close(req);
5575 }
5576 else if (s->txn->meth == HTTP_METH_POST) {
5577 /* POST requests may require to read extra CRLF sent by broken
5578 * browsers and which could cause an RST to be sent upon close
5579 * on some systems (eg: Linux). */
5580 channel_auto_read(req);
5581 }
5582 return 0;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5583
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5584 missing_data_or_waiting:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5585 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5586 if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5587 if (!(s->flags & SF_ERR_MASK))
5588 s->flags |= SF_ERR_CLICL;
5589 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5590 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5591 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5592 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5593 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5594 }
5595
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5596 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5597 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5598 if (objt_server(s->target))
5599 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5600
5601 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5602 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5603
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5604 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5605 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5606 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5607
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5608 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5609 * 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]5610 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5611 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5612 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5613
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5614 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5615 * 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]5616 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5617 * modes are already handled by the stream sock layer. We must not do
5618 * this in content-length mode because it could present the MSG_MORE
5619 * flag with the last block of forwarded data, which would cause an
5620 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5621 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5622 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5623 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5624
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5625 return 0;
5626
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5627 return_bad_req: /* let's centralize all bad requests */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5628 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5629 if (sess->listener->counters)
5630 sess->listener->counters->failed_req++;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5631
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5632 return_bad_req_stats_ok:
5633 txn->req.msg_state = HTTP_MSG_ERROR;
5634 if (txn->status) {
5635 /* Note: we don't send any error if some data were already sent */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5636 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5637 } else {
5638 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5639 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5640 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5641 req->analysers &= AN_FLT_END;
5642 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]5643
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5644 if (!(s->flags & SF_ERR_MASK))
5645 s->flags |= SF_ERR_PRXCOND;
5646 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5647 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5648 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5649 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5650 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5651 }
5652 return 0;
5653
5654 aborted_xfer:
5655 txn->req.msg_state = HTTP_MSG_ERROR;
5656 if (txn->status) {
5657 /* Note: we don't send any error if some data were already sent */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5658 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5659 } else {
5660 txn->status = 502;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5661 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5662 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5663 req->analysers &= AN_FLT_END;
5664 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]5665
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5666 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5667 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5668 if (objt_server(s->target))
5669 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5670
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5671 if (!(s->flags & SF_ERR_MASK))
5672 s->flags |= SF_ERR_SRVCL;
5673 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5674 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5675 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5676 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5677 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5678 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5679 return 0;
5680}
5681
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5682/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5683 * processing can continue on next analysers, or zero if it either needs more
5684 * data or wants to immediately abort the response (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5685 * 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]5686 * when it has nothing left to do, and may remove any analyser when it wants to
5687 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5688 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5689int http_wait_for_response(struct stream *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5690{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5691 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5692 struct http_txn *txn = s->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5693 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5694 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5695 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5696 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5697 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5698
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5699 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]5700 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5701 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5702 rep,
5703 rep->rex, rep->wex,
5704 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5705 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5706 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5707
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5708 /*
5709 * Now parse the partial (or complete) lines.
5710 * We will check the response syntax, and also join multi-line
5711 * headers. An index of all the lines will be elaborated while
5712 * parsing.
5713 *
5714 * For the parsing, we use a 28 states FSM.
5715 *
5716 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5717 * rep->buf->p = beginning of response
5718 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5719 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5720 * msg->eol = end of current header or line (LF or CRLF)
5721 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5722 */
5723
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5724 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5725 /* There's a protected area at the end of the buffer for rewriting
5726 * purposes. We don't want to start to parse the request if the
5727 * protected area is affected, because we may have to move processed
5728 * data later, which is much more complicated.
5729 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5730 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]5731 if (unlikely(!channel_is_rewritable(rep))) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5732 /* some data has still not left the buffer, wake us once that's done */
5733 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5734 goto abort_response;
5735 channel_dont_close(rep);
5736 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5737 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5738 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5739 }
5740
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5741 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5742 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5743 buffer_slow_realign(rep->buf);
5744
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5745 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5746 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5747 }
5748
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5749 /* 1: we might have to print this header in debug mode */
5750 if (unlikely((global.mode & MODE_DEBUG) &&
5751 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]5752 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5753 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5754
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5755 sol = rep->buf->p;
5756 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5757 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5758
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5759 sol += hdr_idx_first_pos(&txn->hdr_idx);
5760 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5761
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5762 while (cur_idx) {
5763 eol = sol + txn->hdr_idx.v[cur_idx].len;
5764 debug_hdr("srvhdr", s, sol, eol);
5765 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5766 cur_idx = txn->hdr_idx.v[cur_idx].next;
5767 }
5768 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5769
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5770 /*
5771 * Now we quickly check if we have found a full valid response.
5772 * If not so, we check the FD and buffer states before leaving.
5773 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5774 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5775 * responses are checked first.
5776 *
5777 * Depending on whether the client is still there or not, we
5778 * may send an error response back or not. Note that normally
5779 * we should only check for HTTP status there, and check I/O
5780 * errors somewhere else.
5781 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5782
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5783 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5784 /* Invalid response */
5785 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5786 /* we detected a parsing error. We want to archive this response
5787 * in the dedicated proxy area for later troubleshooting.
5788 */
5789 hdr_response_bad:
5790 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5791 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]5792
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5793 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5794 if (objt_server(s->target)) {
5795 objt_server(s->target)->counters.failed_resp++;
5796 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5797 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5798 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5799 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5800 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5801 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5802 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5803 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5804 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5805
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5806 if (!(s->flags & SF_ERR_MASK))
5807 s->flags |= SF_ERR_PRXCOND;
5808 if (!(s->flags & SF_FINST_MASK))
5809 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5810
5811 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5812 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5813
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5814 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5815 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5816 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5817 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5818 goto hdr_response_bad;
5819 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5820
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5821 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5822 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5823 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5824 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]5825 else if (txn->flags & TX_NOT_FIRST)
5826 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5827
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5828 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5829 if (objt_server(s->target)) {
5830 objt_server(s->target)->counters.failed_resp++;
5831 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5832 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5833
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5834 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5835 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5836 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5837 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5838 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5839 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5840
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5841 if (!(s->flags & SF_ERR_MASK))
5842 s->flags |= SF_ERR_SRVCL;
5843 if (!(s->flags & SF_FINST_MASK))
5844 s->flags |= SF_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5845 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5846 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5847
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +0200[diff] [blame]5848 /* read timeout : return a 504 to the client. */
5849 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5850 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5851 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]5852
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5853 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5854 if (objt_server(s->target)) {
5855 objt_server(s->target)->counters.failed_resp++;
5856 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5857 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5858
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5859 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5860 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5861 txn->status = 504;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5862 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5863 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5864 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5865
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5866 if (!(s->flags & SF_ERR_MASK))
5867 s->flags |= SF_ERR_SRVTO;
5868 if (!(s->flags & SF_FINST_MASK))
5869 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5870 return 0;
5871 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5872
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5873 /* client abort with an abortonclose */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5874 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]5875 sess->fe->fe_counters.cli_aborts++;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5876 s->be->be_counters.cli_aborts++;
5877 if (objt_server(s->target))
5878 objt_server(s->target)->counters.cli_aborts++;
5879
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5880 rep->analysers &= AN_FLT_END;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5881 channel_auto_close(rep);
5882
5883 txn->status = 400;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5884 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5885 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5886
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5887 if (!(s->flags & SF_ERR_MASK))
5888 s->flags |= SF_ERR_CLICL;
5889 if (!(s->flags & SF_FINST_MASK))
5890 s->flags |= SF_FINST_H;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5891
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5892 /* process_stream() will take care of the error */
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5893 return 0;
5894 }
5895
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5896 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5897 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5898 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5899 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]5900 else if (txn->flags & TX_NOT_FIRST)
5901 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5902
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5903 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5904 if (objt_server(s->target)) {
5905 objt_server(s->target)->counters.failed_resp++;
5906 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5907 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5908
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5909 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5910 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5911 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5912 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5913 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5914 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5915
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5916 if (!(s->flags & SF_ERR_MASK))
5917 s->flags |= SF_ERR_SRVCL;
5918 if (!(s->flags & SF_FINST_MASK))
5919 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5920 return 0;
5921 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5922
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5923 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5924 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5925 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5926 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]5927 else if (txn->flags & TX_NOT_FIRST)
5928 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5929
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5930 s->be->be_counters.failed_resp++;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5931 rep->analysers &= AN_FLT_END;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5932 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5933
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5934 if (!(s->flags & SF_ERR_MASK))
5935 s->flags |= SF_ERR_CLICL;
5936 if (!(s->flags & SF_FINST_MASK))
5937 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5938
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5939 /* process_stream() will take care of the error */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5940 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5941 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5942
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5943 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]5944 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5945 return 0;
5946 }
5947
5948 /* More interesting part now : we know that we have a complete
5949 * response which at least looks like HTTP. We have an indicator
5950 * of each header's length, so we can parse them quickly.
5951 */
5952
5953 if (unlikely(msg->err_pos >= 0))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5954 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]5955
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5956 /*
5957 * 1: get the status code
5958 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5959 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5960 if (n < 1 || n > 5)
5961 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5962 /* when the client triggers a 4xx from the server, it's most often due
5963 * to a missing object or permission. These events should be tracked
5964 * because if they happen often, it may indicate a brute force or a
5965 * vulnerability scan.
5966 */
5967 if (n == 4)
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5968 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5969
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5970 if (objt_server(s->target))
5971 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5972
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]5973 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
5974 * exactly one digit "." one digit. This check may be disabled using
5975 * option accept-invalid-http-response.
5976 */
5977 if (!(s->be->options2 & PR_O2_RSPBUG_OK)) {
5978 if (msg->sl.st.v_l != 8) {
5979 msg->err_pos = 0;
5980 goto hdr_response_bad;
5981 }
5982
5983 if (rep->buf->p[4] != '/' ||
5984 !isdigit((unsigned char)rep->buf->p[5]) ||
5985 rep->buf->p[6] != '.' ||
5986 !isdigit((unsigned char)rep->buf->p[7])) {
5987 msg->err_pos = 4;
5988 goto hdr_response_bad;
5989 }
5990 }
5991
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5992 /* check if the response is HTTP/1.1 or above */
5993 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5994 ((rep->buf->p[5] > '1') ||
5995 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5996 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5997
5998 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5999 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]6000
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6001 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6002 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6003
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6004 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]6005
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]6006 /* Adjust server's health based on status code. Note: status codes 501
6007 * and 505 are triggered on demand by client request, so we must not
6008 * count them as server failures.
6009 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6010 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6011 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6012 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6013 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6014 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6015 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6016
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6017 /*
6018 * 2: check for cacheability.
6019 */
6020
6021 switch (txn->status) {
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]6022 case 100:
6023 /*
6024 * We may be facing a 100-continue response, in which case this
6025 * is not the right response, and we're waiting for the next one.
6026 * Let's allow this response to go to the client and wait for the
6027 * next one.
6028 */
6029 hdr_idx_init(&txn->hdr_idx);
6030 msg->next -= channel_forward(rep, msg->next);
6031 msg->msg_state = HTTP_MSG_RPBEFORE;
6032 txn->status = 0;
6033 s->logs.t_data = -1; /* was not a response yet */
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6034 FLT_STRM_CB(s, flt_http_reset(s, msg));
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]6035 goto next_one;
6036
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6037 case 200:
6038 case 203:
6039 case 206:
6040 case 300:
6041 case 301:
6042 case 410:
6043 /* RFC2616 @13.4:
6044 * "A response received with a status code of
6045 * 200, 203, 206, 300, 301 or 410 MAY be stored
6046 * by a cache (...) unless a cache-control
6047 * directive prohibits caching."
6048 *
6049 * RFC2616 @9.5: POST method :
6050 * "Responses to this method are not cacheable,
6051 * unless the response includes appropriate
6052 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6053 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6054 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6055 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6056 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
6057 break;
6058 default:
6059 break;
6060 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6061
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6062 /*
6063 * 3: we may need to capture headers
6064 */
6065 s->logs.logwait &= ~LW_RESP;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6066 if (unlikely((s->logs.logwait & LW_RSPHDR) && s->res_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6067 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6068 s->res_cap, sess->fe->rsp_cap);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6069
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6070 /* 4: determine the transfer-length according to RFC2616 #4.4, updated
6071 * by RFC7230#3.3.3 :
6072 *
6073 * The length of a message body is determined by one of the following
6074 * (in order of precedence):
6075 *
6076 * 1. Any response to a HEAD request and any response with a 1xx
6077 * (Informational), 204 (No Content), or 304 (Not Modified) status
6078 * code is always terminated by the first empty line after the
6079 * header fields, regardless of the header fields present in the
6080 * message, and thus cannot contain a message body.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6081 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6082 * 2. Any 2xx (Successful) response to a CONNECT request implies that
6083 * the connection will become a tunnel immediately after the empty
6084 * line that concludes the header fields. A client MUST ignore any
6085 * Content-Length or Transfer-Encoding header fields received in
6086 * such a message.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6087 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6088 * 3. If a Transfer-Encoding header field is present and the chunked
6089 * transfer coding (Section 4.1) is the final encoding, the message
6090 * body length is determined by reading and decoding the chunked
6091 * data until the transfer coding indicates the data is complete.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6092 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6093 * If a Transfer-Encoding header field is present in a response and
6094 * the chunked transfer coding is not the final encoding, the
6095 * message body length is determined by reading the connection until
6096 * it is closed by the server. If a Transfer-Encoding header field
6097 * is present in a request and the chunked transfer coding is not
6098 * the final encoding, the message body length cannot be determined
6099 * reliably; the server MUST respond with the 400 (Bad Request)
6100 * status code and then close the connection.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6101 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6102 * If a message is received with both a Transfer-Encoding and a
6103 * Content-Length header field, the Transfer-Encoding overrides the
6104 * Content-Length. Such a message might indicate an attempt to
6105 * perform request smuggling (Section 9.5) or response splitting
6106 * (Section 9.4) and ought to be handled as an error. A sender MUST
6107 * remove the received Content-Length field prior to forwarding such
6108 * a message downstream.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6109 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6110 * 4. If a message is received without Transfer-Encoding and with
6111 * either multiple Content-Length header fields having differing
6112 * field-values or a single Content-Length header field having an
6113 * invalid value, then the message framing is invalid and the
6114 * recipient MUST treat it as an unrecoverable error. If this is a
6115 * request message, the server MUST respond with a 400 (Bad Request)
6116 * status code and then close the connection. If this is a response
6117 * message received by a proxy, the proxy MUST close the connection
6118 * to the server, discard the received response, and send a 502 (Bad
6119 * Gateway) response to the client. If this is a response message
6120 * received by a user agent, the user agent MUST close the
6121 * connection to the server and discard the received response.
6122 *
6123 * 5. If a valid Content-Length header field is present without
6124 * Transfer-Encoding, its decimal value defines the expected message
6125 * body length in octets. If the sender closes the connection or
6126 * the recipient times out before the indicated number of octets are
6127 * received, the recipient MUST consider the message to be
6128 * incomplete and close the connection.
6129 *
6130 * 6. If this is a request message and none of the above are true, then
6131 * the message body length is zero (no message body is present).
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6132 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6133 * 7. Otherwise, this is a response message without a declared message
6134 * body length, so the message body length is determined by the
6135 * number of octets received prior to the server closing the
6136 * connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6137 */
6138
6139 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6140 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6141 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6142 * FIXME: should we parse anyway and return an error on chunked encoding ?
6143 */
6144 if (txn->meth == HTTP_METH_HEAD ||
6145 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6146 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6147 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6148 goto skip_content_length;
6149 }
6150
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6151 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6152 ctx.idx = 0;
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]6153 while (http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6154 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6155 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
6156 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6157 /* bad transfer-encoding (chunked followed by something else) */
6158 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6159 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6160 break;
6161 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6162 }
6163
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6164 /* Chunked responses must have their content-length removed */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6165 ctx.idx = 0;
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6166 if (use_close_only || (msg->flags & HTTP_MSGF_TE_CHNK)) {
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6167 while (http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx))
6168 http_remove_header2(msg, &txn->hdr_idx, &ctx);
6169 }
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6170 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]6171 signed long long cl;
6172
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6173 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6174 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6175 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6176 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6177
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6178 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6179 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6180 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6181 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6182
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6183 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6184 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6185 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6186 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6187
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6188 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6189 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6190 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6191 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6192
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6193 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6194 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6195 }
6196
6197skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6198 /* Now we have to check if we need to modify the Connection header.
6199 * This is more difficult on the response than it is on the request,
6200 * because we can have two different HTTP versions and we don't know
6201 * how the client will interprete a response. For instance, let's say
6202 * that the client sends a keep-alive request in HTTP/1.0 and gets an
6203 * HTTP/1.1 response without any header. Maybe it will bound itself to
6204 * HTTP/1.0 because it only knows about it, and will consider the lack
6205 * of header as a close, or maybe it knows HTTP/1.1 and can consider
6206 * the lack of header as a keep-alive. Thus we will use two flags
6207 * indicating how a request MAY be understood by the client. In case
6208 * of multiple possibilities, we'll fix the header to be explicit. If
6209 * ambiguous cases such as both close and keepalive are seen, then we
6210 * will fall back to explicit close. Note that we won't take risks with
6211 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6212 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6213 */
6214
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6215 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
6216 txn->status == 101)) {
6217 /* Either we've established an explicit tunnel, or we're
6218 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6219 * to understand the next protocols. We have to switch to tunnel
6220 * mode, so that we transfer the request and responses then let
6221 * this protocol pass unmodified. When we later implement specific
6222 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6223 * header which contains information about that protocol for
6224 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6225 */
6226 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
6227 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6228 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
6229 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6230 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6231 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6232 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6233
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6234 /* this situation happens when combining pretend-keepalive with httpclose. */
6235 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6236 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6237 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6238 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
6239
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6240 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6241 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6242 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
6243 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6244
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6245 /* now adjust header transformations depending on current state */
6246 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
6247 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
6248 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6249 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6250 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6251 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6252 else { /* SCL / KAL */
6253 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6254 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6255 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6256 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6257
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6258 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6259 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6260
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6261 /* Some keep-alive responses are converted to Server-close if
6262 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6263 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6264 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
6265 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6266 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6267 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6268 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6269 }
6270
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6271 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6272 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6273
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6274 /* end of job, return OK */
6275 rep->analysers &= ~an_bit;
6276 rep->analyse_exp = TICK_ETERNITY;
6277 channel_auto_close(rep);
6278 return 1;
6279
6280 abort_keep_alive:
6281 /* A keep-alive request to the server failed on a network error.
6282 * The client is required to retry. We need to close without returning
6283 * any other information so that the client retries.
6284 */
6285 txn->status = 0;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6286 rep->analysers &= AN_FLT_END;
6287 s->req.analysers &= AN_FLT_END;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6288 channel_auto_close(rep);
6289 s->logs.logwait = 0;
6290 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6291 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6292 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6293 http_reply_and_close(s, txn->status, NULL);
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6294 return 0;
6295}
6296
6297/* This function performs all the processing enabled for the current response.
6298 * It normally returns 1 unless it wants to break. It relies on buffers flags,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6299 * and updates s->res.analysers. It might make sense to explode it into several
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6300 * other functions. It works like process_request (see indications above).
6301 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6302int 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]6303{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6304 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6305 struct http_txn *txn = s->txn;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6306 struct http_msg *msg = &txn->rsp;
6307 struct proxy *cur_proxy;
6308 struct cond_wordlist *wl;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]6309 enum rule_result ret = HTTP_RULE_RES_CONT;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6310
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6311 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]6312 now_ms, __FUNCTION__,
6313 s,
6314 rep,
6315 rep->rex, rep->wex,
6316 rep->flags,
6317 rep->buf->i,
6318 rep->analysers);
6319
6320 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
6321 return 0;
6322
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6323 /* The stats applet needs to adjust the Connection header but we don't
6324 * apply any filter there.
6325 */
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6326 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
6327 rep->analysers &= ~an_bit;
6328 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6329 goto skip_filters;
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6330 }
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6331
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6332 /*
6333 * We will have to evaluate the filters.
6334 * As opposed to version 1.2, now they will be evaluated in the
6335 * filters order and not in the header order. This means that
6336 * each filter has to be validated among all headers.
6337 *
6338 * Filters are tried with ->be first, then with ->fe if it is
6339 * different from ->be.
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6340 *
6341 * Maybe we are in resume condiion. In this case I choose the
6342 * "struct proxy" which contains the rule list matching the resume
6343 * pointer. If none of theses "struct proxy" match, I initialise
6344 * the process with the first one.
6345 *
6346 * In fact, I check only correspondance betwwen the current list
6347 * pointer and the ->fe rule list. If it doesn't match, I initialize
6348 * the loop with the ->be.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6349 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6350 if (s->current_rule_list == &sess->fe->http_res_rules)
6351 cur_proxy = sess->fe;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6352 else
6353 cur_proxy = s->be;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6354 while (1) {
6355 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6356
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6357 /* evaluate http-response rules */
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6358 if (ret == HTTP_RULE_RES_CONT) {
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]6359 ret = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, s);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]6360
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6361 if (ret == HTTP_RULE_RES_BADREQ)
6362 goto return_srv_prx_502;
6363
6364 if (ret == HTTP_RULE_RES_DONE) {
6365 rep->analysers &= ~an_bit;
6366 rep->analyse_exp = TICK_ETERNITY;
6367 return 1;
6368 }
6369 }
6370
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6371 /* we need to be called again. */
6372 if (ret == HTTP_RULE_RES_YIELD) {
6373 channel_dont_close(rep);
6374 return 0;
6375 }
6376
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6377 /* try headers filters */
6378 if (rule_set->rsp_exp != NULL) {
6379 if (apply_filters_to_response(s, rep, rule_set) < 0) {
6380 return_bad_resp:
6381 if (objt_server(s->target)) {
6382 objt_server(s->target)->counters.failed_resp++;
6383 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6384 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6385 s->be->be_counters.failed_resp++;
6386 return_srv_prx_502:
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6387 rep->analysers &= AN_FLT_END;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6388 txn->status = 502;
6389 s->logs.t_data = -1; /* was not a valid response */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6390 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6391 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6392 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6393 if (!(s->flags & SF_ERR_MASK))
6394 s->flags |= SF_ERR_PRXCOND;
6395 if (!(s->flags & SF_FINST_MASK))
6396 s->flags |= SF_FINST_H;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6397 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6398 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6399 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6400
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6401 /* has the response been denied ? */
6402 if (txn->flags & TX_SVDENY) {
6403 if (objt_server(s->target))
6404 objt_server(s->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6405
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6406 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6407 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6408 if (sess->listener->counters)
6409 sess->listener->counters->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6410
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6411 goto return_srv_prx_502;
6412 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]6413
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6414 /* add response headers from the rule sets in the same order */
6415 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6416 if (txn->status < 200 && txn->status != 101)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6417 break;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6418 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]6419 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]6420 ret = acl_pass(ret);
6421 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
6422 ret = !ret;
6423 if (!ret)
6424 continue;
6425 }
6426 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
6427 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6428 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6429
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6430 /* check whether we're already working on the frontend */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6431 if (cur_proxy == sess->fe)
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6432 break;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6433 cur_proxy = sess->fe;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6434 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6435
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6436 /* After this point, this anayzer can't return yield, so we can
6437 * remove the bit corresponding to this analyzer from the list.
6438 *
6439 * Note that the intermediate returns and goto found previously
6440 * reset the analyzers.
6441 */
6442 rep->analysers &= ~an_bit;
6443 rep->analyse_exp = TICK_ETERNITY;
6444
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6445 /* OK that's all we can do for 1xx responses */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6446 if (unlikely(txn->status < 200 && txn->status != 101))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6447 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6448
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6449 /*
6450 * Now check for a server cookie.
6451 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]6452 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]6453 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6454
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6455 /*
6456 * Check for cache-control or pragma headers if required.
6457 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6458 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]6459 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6460
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6461 /*
6462 * Add server cookie in the response if needed
6463 */
6464 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
6465 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6466 (!(s->flags & SF_DIRECT) ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6467 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
6468 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
6469 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
6470 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
6471 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6472 !(s->flags & SF_IGNORE_PRST)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6473 /* the server is known, it's not the one the client requested, or the
6474 * cookie's last seen date needs to be refreshed. We have to
6475 * insert a set-cookie here, except if we want to insert only on POST
6476 * requests and this one isn't. Note that servers which don't have cookies
6477 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6478 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6479 if (!objt_server(s->target)->cookie) {
6480 chunk_printf(&trash,
6481 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
6482 s->be->cookie_name);
6483 }
6484 else {
6485 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]6486
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6487 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
6488 /* emit last_date, which is mandatory */
6489 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6490 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6491 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6492
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6493 if (s->be->cookie_maxlife) {
6494 /* emit first_date, which is either the original one or
6495 * the current date.
6496 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6497 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6498 s30tob64(txn->cookie_first_date ?
6499 txn->cookie_first_date >> 2 :
6500 (date.tv_sec+3) >> 2, trash.str + trash.len);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6501 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6502 }
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6503 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6504 chunk_appendf(&trash, "; path=/");
6505 }
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6506
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6507 if (s->be->cookie_domain)
6508 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6509
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6510 if (s->be->ck_opts & PR_CK_HTTPONLY)
6511 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6512
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6513 if (s->be->ck_opts & PR_CK_SECURE)
6514 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6515
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6516 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
6517 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6518
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6519 txn->flags &= ~TX_SCK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6520 if (objt_server(s->target)->cookie && (s->flags & SF_DIRECT))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6521 /* the server did not change, only the date was updated */
6522 txn->flags |= TX_SCK_UPDATED;
6523 else
6524 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6525
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6526 /* Here, we will tell an eventual cache on the client side that we don't
6527 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6528 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6529 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6530 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6531 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6532
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6533 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6534
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6535 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
6536 "Cache-control: private", 22) < 0))
6537 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6538 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6539 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6540
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6541 /*
6542 * Check if result will be cacheable with a cookie.
6543 * We'll block the response if security checks have caught
6544 * nasty things such as a cacheable cookie.
6545 */
6546 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6547 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
6548 (s->be->options & PR_O_CHK_CACHE)) {
6549 /* we're in presence of a cacheable response containing
6550 * a set-cookie header. We'll block it as requested by
6551 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6552 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6553 if (objt_server(s->target))
6554 objt_server(s->target)->counters.failed_secu++;
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6555
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6556 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6557 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6558 if (sess->listener->counters)
6559 sess->listener->counters->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6560
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6561 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
6562 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6563 send_log(s->be, LOG_ALERT,
6564 "Blocking cacheable cookie in response from instance %s, server %s.\n",
6565 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6566 goto return_srv_prx_502;
6567 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6568
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6569 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6570 /*
6571 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
6572 * If an "Upgrade" token is found, the header is left untouched in order
6573 * 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]6574 * if anything but "Upgrade" is present in the Connection header. We don't
6575 * want to touch any 101 response either since it's switching to another
6576 * protocol.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6577 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6578 if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) &&
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6579 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6580 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6581 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
6582 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6583
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6584 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6585 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6586 /* we want a keep-alive response here. Keep-alive header
6587 * required if either side is not 1.1.
6588 */
6589 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
6590 want_flags |= TX_CON_KAL_SET;
6591 }
6592 else {
6593 /* we want a close response here. Close header required if
6594 * the server is 1.1, regardless of the client.
6595 */
6596 if (msg->flags & HTTP_MSGF_VER_11)
6597 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6598 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6599
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6600 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
6601 http_change_connection_header(txn, msg, want_flags);
6602 }
6603
6604 skip_header_mangling:
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6605 if ((msg->flags & HTTP_MSGF_XFER_LEN) || HAS_FILTERS(s) ||
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6606 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
6607 rep->analysers &= ~AN_FLT_XFER_DATA;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6608 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6609 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6610
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6611 /* if the user wants to log as soon as possible, without counting
6612 * bytes from the server, then this is the right moment. We have
6613 * to temporarily assign bytes_out to log what we currently have.
6614 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6615 if (!LIST_ISEMPTY(&sess->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6616 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
6617 s->logs.bytes_out = txn->rsp.eoh;
6618 s->do_log(s);
6619 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6620 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6621 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6622}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6623
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6624/* This function is an analyser which forwards response body (including chunk
6625 * sizes if any). It is called as soon as we must forward, even if we forward
6626 * zero byte. The only situation where it must not be called is when we're in
6627 * tunnel mode and we want to forward till the close. It's used both to forward
6628 * remaining data and to resync after end of body. It expects the msg_state to
6629 * 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]6630 * 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]6631 *
6632 * It is capable of compressing response data both in content-length mode and
6633 * in chunked mode. The state machines follows different flows depending on
6634 * whether content-length and chunked modes are used, since there are no
6635 * trailers in content-length :
6636 *
6637 * chk-mode cl-mode
6638 * ,----- BODY -----.
6639 * / \
6640 * V size > 0 V chk-mode
6641 * .--> SIZE -------------> DATA -------------> CRLF
6642 * | | size == 0 | last byte |
6643 * | v final crlf v inspected |
6644 * | TRAILERS -----------> DONE |
6645 * | |
6646 * `----------------------------------------------'
6647 *
6648 * Compression only happens in the DATA state, and must be flushed in final
6649 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
6650 * is performed at once on final states for all bytes parsed, or when leaving
6651 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6652 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6653int http_response_forward_body(struct stream *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6654{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6655 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6656 struct http_txn *txn = s->txn;
6657 struct http_msg *msg = &s->txn->rsp;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6658 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6659
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6660 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6661 return 0;
6662
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6663 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]6664 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6665 !s->req.analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6666 /* Output closed while we were sending data. We must abort and
6667 * wake the other side up.
6668 */
6669 msg->msg_state = HTTP_MSG_ERROR;
6670 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6671 return 1;
6672 }
6673
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6674 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6675 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6676
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6677 if (msg->msg_state == HTTP_MSG_BODY) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6678 msg->msg_state = ((msg->flags & HTTP_MSGF_TE_CHNK)
6679 ? HTTP_MSG_CHUNK_SIZE
6680 : HTTP_MSG_DATA);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6681 }
6682
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6683 if (res->to_forward) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6684 /* We can't process the buffer's contents yet */
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6685 res->flags |= CF_WAKE_WRITE;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6686 goto missing_data_or_waiting;
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6687 }
6688
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6689 if (msg->msg_state < HTTP_MSG_DONE) {
6690 ret = ((msg->flags & HTTP_MSGF_TE_CHNK)
6691 ? http_msg_forward_chunked_body(s, msg)
6692 : http_msg_forward_body(s, msg));
6693 if (!ret)
6694 goto missing_data_or_waiting;
6695 if (ret < 0)
6696 goto return_bad_res;
6697 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6698
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6699 /* other states, DONE...TUNNEL */
6700 /* for keep-alive we don't want to forward closes on DONE */
6701 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6702 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
6703 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]6704
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6705 ret = msg->msg_state;
6706 if (http_resync_states(s)) {
6707 /* some state changes occurred, maybe the analyser was disabled
6708 * too. */
6709 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
6710 if (res->flags & CF_SHUTW) {
6711 /* response errors are most likely due to the
6712 * client aborting the transfer. */
6713 goto aborted_xfer;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6714 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6715 if (msg->err_pos >= 0)
6716 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, strm_fe(s));
6717 goto return_bad_res;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6718 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6719 return 1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6720 }
Willy Tarreauf51d03c2016-05-02 15:25:15 +0200[diff] [blame]6721 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6722
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6723 missing_data_or_waiting:
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6724 if (res->flags & CF_SHUTW)
6725 goto aborted_xfer;
6726
6727 /* stop waiting for data if the input is closed before the end. If the
6728 * client side was already closed, it means that the client has aborted,
6729 * so we don't want to count this as a server abort. Otherwise it's a
6730 * server abort.
6731 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6732 if (res->flags & CF_SHUTR) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6733 if ((s->req.flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6734 goto aborted_xfer;
Christopher Fauleta46bbd82015-06-19 09:00:58 +0200[diff] [blame]6735 /* If we have some pending data, we continue the processing */
6736 if (!buffer_pending(res->buf)) {
6737 if (!(s->flags & SF_ERR_MASK))
6738 s->flags |= SF_ERR_SRVCL;
6739 s->be->be_counters.srv_aborts++;
6740 if (objt_server(s->target))
6741 objt_server(s->target)->counters.srv_aborts++;
6742 goto return_bad_res_stats_ok;
6743 }
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6744 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6745
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6746 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6747 if (!s->req.analysers)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6748 goto return_bad_res;
6749
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6750 /* When TE: chunked is used, we need to get there again to parse
6751 * remaining chunks even if the server has closed, so we don't want to
6752 * set CF_DONTCLOSE. Similarly, if the body length is undefined, if
6753 * keep-alive is set on the client side or if there are filters
6754 * registered on the stream, we don't want to forward a close
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6755 */
Christopher Faulet92d36382015-11-05 13:35:03 +0100[diff] [blame]6756 if ((msg->flags & HTTP_MSGF_TE_CHNK) || !msg->body_len ||
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6757 HAS_FILTERS(s) ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6758 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6759 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6760 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6761
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6762 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6763 * 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]6764 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6765 * modes are already handled by the stream sock layer. We must not do
6766 * this in content-length mode because it could present the MSG_MORE
6767 * flag with the last block of forwarded data, which would cause an
6768 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6769 */
Christopher Faulet92d36382015-11-05 13:35:03 +0100[diff] [blame]6770 if ((msg->flags & HTTP_MSGF_TE_CHNK) || (msg->flags & HTTP_MSGF_COMPRESSING))
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6771 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6772
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6773 /* the stream handler will take care of timeouts and errors */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6774 return 0;
6775
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6776 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6777 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6778 if (objt_server(s->target))
6779 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6780
6781 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6782 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6783 /* don't send any error message as we're in the body */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6784 http_reply_and_close(s, txn->status, NULL);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6785 res->analysers &= AN_FLT_END;
6786 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]6787 if (objt_server(s->target))
6788 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6789
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6790 if (!(s->flags & SF_ERR_MASK))
6791 s->flags |= SF_ERR_PRXCOND;
6792 if (!(s->flags & SF_FINST_MASK))
6793 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6794 return 0;
6795
6796 aborted_xfer:
6797 txn->rsp.msg_state = HTTP_MSG_ERROR;
6798 /* don't send any error message as we're in the body */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6799 http_reply_and_close(s, txn->status, NULL);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6800 res->analysers &= AN_FLT_END;
6801 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]6802
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6803 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6804 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6805 if (objt_server(s->target))
6806 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6807
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6808 if (!(s->flags & SF_ERR_MASK))
6809 s->flags |= SF_ERR_CLICL;
6810 if (!(s->flags & SF_FINST_MASK))
6811 s->flags |= SF_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6812 return 0;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6813}
6814
6815
6816static inline int
6817http_msg_forward_body(struct stream *s, struct http_msg *msg)
6818{
6819 struct channel *chn = msg->chn;
6820 int ret;
6821
6822 /* Here we have the guarantee to be in HTTP_MSG_DATA or HTTP_MSG_ENDING state */
6823
6824 if (msg->msg_state == HTTP_MSG_ENDING)
6825 goto ending;
6826
6827 /* Neither content-length, nor transfer-encoding was found, so we must
6828 * read the body until the server connection is closed. In that case, we
6829 * eat data as they come. Of course, this happens for response only. */
6830 if (!(msg->flags & HTTP_MSGF_XFER_LEN)) {
6831 unsigned long long len = (chn->buf->i - msg->next);
6832 msg->chunk_len += len;
6833 msg->body_len += len;
6834 }
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6835 ret = FLT_STRM_DATA_CB(s, chn, flt_http_data(s, msg),
6836 /* default_ret */ MIN(msg->chunk_len, chn->buf->i - msg->next),
6837 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6838 msg->next += ret;
6839 msg->chunk_len -= ret;
6840 if (msg->chunk_len) {
6841 /* input empty or output full */
6842 if (chn->buf->i > msg->next)
6843 chn->flags |= CF_WAKE_WRITE;
6844 goto missing_data_or_waiting;
6845 }
6846
6847 if (!(msg->flags & HTTP_MSGF_XFER_LEN) && !(chn->flags & CF_SHUTR)) {
6848 /* The server still sending data */
6849 goto missing_data_or_waiting;
6850 }
6851 msg->msg_state = HTTP_MSG_ENDING;
6852
6853 ending:
6854 /* we may have some pending data starting at res->buf->p such as a last
6855 * chunk of data or trailers. */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6856 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
6857 /* default_ret */ msg->next,
6858 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6859 b_adv(chn->buf, ret);
6860 msg->next -= ret;
6861 if (msg->next)
6862 goto missing_data_or_waiting;
6863
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6864 FLT_STRM_DATA_CB(s, chn, flt_http_end(s, msg),
6865 /* default_ret */ 1,
6866 /* on_error */ goto error,
6867 /* on_wait */ goto waiting);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6868 msg->msg_state = HTTP_MSG_DONE;
6869 return 1;
6870
6871 missing_data_or_waiting:
6872 /* we may have some pending data starting at chn->buf->p */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6873 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
6874 /* default_ret */ msg->next,
6875 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6876 b_adv(chn->buf, ret);
6877 msg->next -= ret;
6878 if (!(chn->flags & CF_WROTE_DATA) || msg->sov > 0)
6879 msg->sov -= ret;
Christopher Faulet75e2eb62015-12-15 10:41:47 +0100[diff] [blame]6880 if (!HAS_DATA_FILTERS(s, chn))
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6881 msg->chunk_len -= channel_forward(chn, msg->chunk_len);
6882 waiting:
6883 return 0;
6884 error:
6885 return -1;
6886}
6887
6888static inline int
6889http_msg_forward_chunked_body(struct stream *s, struct http_msg *msg)
6890{
6891 struct channel *chn = msg->chn;
6892 int ret;
6893
6894 /* Here we have the guarantee to be in one of the following state:
6895 * HTTP_MSG_DATA, HTTP_MSG_CHUNK_SIZE, HTTP_MSG_CHUNK_CRLF,
6896 * HTTP_MSG_TRAILERS or HTTP_MSG_ENDING. */
6897
6898 switch_states:
6899 switch (msg->msg_state) {
6900 case HTTP_MSG_DATA:
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6901 ret = FLT_STRM_DATA_CB(s, chn, flt_http_data(s, msg),
6902 /* default_ret */ MIN(msg->chunk_len, chn->buf->i - msg->next),
6903 /* on_error */ goto error);
6904 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6905 msg->chunk_len -= ret;
6906 if (msg->chunk_len) {
6907 /* input empty or output full */
6908 if (chn->buf->i > msg->next)
6909 chn->flags |= CF_WAKE_WRITE;
6910 goto missing_data_or_waiting;
6911 }
6912
6913 /* nothing left to forward for this chunk*/
6914 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
6915 /* fall through for HTTP_MSG_CHUNK_CRLF */
6916
6917 case HTTP_MSG_CHUNK_CRLF:
6918 /* we want the CRLF after the data */
6919 ret = http_skip_chunk_crlf(msg);
6920 if (ret == 0)
6921 goto missing_data_or_waiting;
6922 if (ret < 0)
6923 goto chunk_parsing_error;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]6924 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6925 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
6926 /* fall through for HTTP_MSG_CHUNK_SIZE */
6927
6928 case HTTP_MSG_CHUNK_SIZE:
6929 /* read the chunk size and assign it to ->chunk_len,
6930 * then set ->next to point to the body and switch to
6931 * DATA or TRAILERS state.
6932 */
6933 ret = http_parse_chunk_size(msg);
6934 if (ret == 0)
6935 goto missing_data_or_waiting;
6936 if (ret < 0)
6937 goto chunk_parsing_error;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]6938 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6939 if (msg->chunk_len) {
6940 msg->msg_state = HTTP_MSG_DATA;
6941 goto switch_states;
6942 }
6943 msg->msg_state = HTTP_MSG_TRAILERS;
6944 /* fall through for HTTP_MSG_TRAILERS */
6945
6946 case HTTP_MSG_TRAILERS:
6947 ret = http_forward_trailers(msg);
6948 if (ret < 0)
6949 goto chunk_parsing_error;
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6950 FLT_STRM_DATA_CB(s, chn, flt_http_chunk_trailers(s, msg),
6951 /* default_ret */ 1,
6952 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6953 msg->next += msg->sol;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6954 if (!ret)
6955 goto missing_data_or_waiting;
6956 break;
6957
6958 case HTTP_MSG_ENDING:
6959 goto ending;
6960
6961 default:
6962 /* This should no happen in this function */
6963 goto error;
6964 }
6965
6966 msg->msg_state = HTTP_MSG_ENDING;
6967 ending:
6968 /* we may have some pending data starting at res->buf->p such as a last
6969 * chunk of data or trailers. */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6970 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6971 /* default_ret */ msg->next,
6972 /* on_error */ goto error);
6973 b_adv(chn->buf, ret);
6974 msg->next -= ret;
6975 if (msg->next)
6976 goto missing_data_or_waiting;
6977
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6978 FLT_STRM_DATA_CB(s, chn, flt_http_end(s, msg),
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6979 /* default_ret */ 1,
6980 /* on_error */ goto error,
6981 /* on_wait */ goto waiting);
6982 msg->msg_state = HTTP_MSG_DONE;
6983 return 1;
6984
6985 missing_data_or_waiting:
6986 /* we may have some pending data starting at chn->buf->p */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6987 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6988 /* default_ret */ msg->next,
6989 /* on_error */ goto error);
6990 b_adv(chn->buf, ret);
6991 msg->next -= ret;
6992 if (!(chn->flags & CF_WROTE_DATA) || msg->sov > 0)
6993 msg->sov -= ret;
Christopher Faulet75e2eb62015-12-15 10:41:47 +0100[diff] [blame]6994 if (!HAS_DATA_FILTERS(s, chn))
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6995 msg->chunk_len -= channel_forward(chn, msg->chunk_len);
6996 waiting:
6997 return 0;
6998
6999 chunk_parsing_error:
7000 if (msg->err_pos >= 0) {
7001 if (chn->flags & CF_ISRESP)
7002 http_capture_bad_message(&s->be->invalid_rep, s, msg,
7003 msg->msg_state, strm_fe(s));
7004 else
7005 http_capture_bad_message(&strm_fe(s)->invalid_req, s,
7006 msg, msg->msg_state, s->be);
7007 }
7008 error:
7009 return -1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7010}
7011
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7012
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7013/* Iterate the same filter through all request headers.
7014 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7015 * Since it can manage the switch to another backend, it updates the per-proxy
7016 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7017 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7018int 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]7019{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7020 char *cur_ptr, *cur_end, *cur_next;
7021 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7022 struct http_txn *txn = s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7023 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7024 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]7025
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7026 last_hdr = 0;
7027
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7028 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7029 old_idx = 0;
7030
7031 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7032 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7033 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7034 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7035 (exp->action == ACT_ALLOW ||
7036 exp->action == ACT_DENY ||
7037 exp->action == ACT_TARPIT))
7038 return 0;
7039
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7040 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7041 if (!cur_idx)
7042 break;
7043
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7044 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7045 cur_ptr = cur_next;
7046 cur_end = cur_ptr + cur_hdr->len;
7047 cur_next = cur_end + cur_hdr->cr + 1;
7048
7049 /* Now we have one header between cur_ptr and cur_end,
7050 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7051 */
7052
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7053 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]7054 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7055 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7056 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7057 last_hdr = 1;
7058 break;
7059
7060 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7061 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7062 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7063 break;
7064
7065 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7066 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7067 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7068 break;
7069
7070 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7071 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7072 if (trash.len < 0)
7073 return -1;
7074
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7075 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7076 /* FIXME: if the user adds a newline in the replacement, the
7077 * index will not be recalculated for now, and the new line
7078 * will not be counted as a new header.
7079 */
7080
7081 cur_end += delta;
7082 cur_next += delta;
7083 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7084 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7085 break;
7086
7087 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7088 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7089 cur_next += delta;
7090
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7091 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7092 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7093 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7094 cur_hdr->len = 0;
7095 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7096 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7097 break;
7098
7099 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7100 }
7101
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7102 /* keep the link from this header to next one in case of later
7103 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7104 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7105 old_idx = cur_idx;
7106 }
7107 return 0;
7108}
7109
7110
7111/* Apply the filter to the request line.
7112 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7113 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7114 * Since it can manage the switch to another backend, it updates the per-proxy
7115 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7116 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7117int 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]7118{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7119 char *cur_ptr, *cur_end;
7120 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7121 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7122 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7123
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7124 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7125 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7126 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7127 (exp->action == ACT_ALLOW ||
7128 exp->action == ACT_DENY ||
7129 exp->action == ACT_TARPIT))
7130 return 0;
7131 else if (exp->action == ACT_REMOVE)
7132 return 0;
7133
7134 done = 0;
7135
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7136 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7137 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7138
7139 /* Now we have the request line between cur_ptr and cur_end */
7140
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7141 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]7142 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7143 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7144 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7145 done = 1;
7146 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7147
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7148 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7149 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7150 done = 1;
7151 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7152
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7153 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7154 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7155 done = 1;
7156 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7157
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7158 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7159 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7160 if (trash.len < 0)
7161 return -1;
7162
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7163 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7164 /* FIXME: if the user adds a newline in the replacement, the
7165 * index will not be recalculated for now, and the new line
7166 * will not be counted as a new header.
7167 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7168
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7169 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7170 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7171 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7172 HTTP_MSG_RQMETH,
7173 cur_ptr, cur_end + 1,
7174 NULL, NULL);
7175 if (unlikely(!cur_end))
7176 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7177
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7178 /* we have a full request and we know that we have either a CR
7179 * or an LF at <ptr>.
7180 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7181 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
7182 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]7183 /* there is no point trying this regex on headers */
7184 return 1;
7185 }
7186 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7187 return done;
7188}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]7189
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7190
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7191
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7192/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7193 * 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]7194 * 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]7195 * unparsable request. Since it can manage the switch to another backend, it
7196 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7197 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7198int apply_filters_to_request(struct stream *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7199{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7200 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7201 struct http_txn *txn = s->txn;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7202 struct hdr_exp *exp;
7203
7204 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7205 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7206
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7207 /*
7208 * The interleaving of transformations and verdicts
7209 * makes it difficult to decide to continue or stop
7210 * the evaluation.
7211 */
7212
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7213 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
7214 break;
7215
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7216 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7217 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7218 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7219 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7220
7221 /* if this filter had a condition, evaluate it now and skip to
7222 * next filter if the condition does not match.
7223 */
7224 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7225 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]7226 ret = acl_pass(ret);
7227 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7228 ret = !ret;
7229
7230 if (!ret)
7231 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7232 }
7233
7234 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7235 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7236 if (unlikely(ret < 0))
7237 return -1;
7238
7239 if (likely(ret == 0)) {
7240 /* The filter did not match the request, it can be
7241 * iterated through all headers.
7242 */
Willy Tarreau34d4c3c2015-01-30 20:58:58 +0100[diff] [blame]7243 if (unlikely(apply_filter_to_req_headers(s, req, exp) < 0))
7244 return -1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7245 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7246 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7247 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7248}
7249
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7250
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7251/* Find the end of a cookie value contained between <s> and <e>. It works the
7252 * same way as with headers above except that the semi-colon also ends a token.
7253 * See RFC2965 for more information. Note that it requires a valid header to
7254 * return a valid result.
7255 */
7256char *find_cookie_value_end(char *s, const char *e)
7257{
7258 int quoted, qdpair;
7259
7260 quoted = qdpair = 0;
7261 for (; s < e; s++) {
7262 if (qdpair) qdpair = 0;
7263 else if (quoted) {
7264 if (*s == '\\') qdpair = 1;
7265 else if (*s == '"') quoted = 0;
7266 }
7267 else if (*s == '"') quoted = 1;
7268 else if (*s == ',' || *s == ';') return s;
7269 }
7270 return s;
7271}
7272
7273/* Delete a value in a header between delimiters <from> and <next> in buffer
7274 * <buf>. The number of characters displaced is returned, and the pointer to
7275 * the first delimiter is updated if required. The function tries as much as
7276 * possible to respect the following principles :
7277 * - replace <from> delimiter by the <next> one unless <from> points to a
7278 * colon, in which case <next> is simply removed
7279 * - set exactly one space character after the new first delimiter, unless
7280 * there are not enough characters in the block being moved to do so.
7281 * - remove unneeded spaces before the previous delimiter and after the new
7282 * one.
7283 *
7284 * It is the caller's responsibility to ensure that :
7285 * - <from> points to a valid delimiter or the colon ;
7286 * - <next> points to a valid delimiter or the final CR/LF ;
7287 * - there are non-space chars before <from> ;
7288 * - there is a CR/LF at or after <next>.
7289 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]7290int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7291{
7292 char *prev = *from;
7293
7294 if (*prev == ':') {
7295 /* We're removing the first value, preserve the colon and add a
7296 * space if possible.
7297 */
7298 if (!http_is_crlf[(unsigned char)*next])
7299 next++;
7300 prev++;
7301 if (prev < next)
7302 *prev++ = ' ';
7303
7304 while (http_is_spht[(unsigned char)*next])
7305 next++;
7306 } else {
7307 /* Remove useless spaces before the old delimiter. */
7308 while (http_is_spht[(unsigned char)*(prev-1)])
7309 prev--;
7310 *from = prev;
7311
7312 /* copy the delimiter and if possible a space if we're
7313 * not at the end of the line.
7314 */
7315 if (!http_is_crlf[(unsigned char)*next]) {
7316 *prev++ = *next++;
7317 if (prev + 1 < next)
7318 *prev++ = ' ';
7319 while (http_is_spht[(unsigned char)*next])
7320 next++;
7321 }
7322 }
7323 return buffer_replace2(buf, prev, next, NULL, 0);
7324}
7325
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7326/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7327 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7328 * desirable to call it only when needed. This code is quite complex because
7329 * of the multiple very crappy and ambiguous syntaxes we have to support. it
7330 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7331 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7332void manage_client_side_cookies(struct stream *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7333{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7334 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7335 struct session *sess = s->sess;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7336 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7337 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7338 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
7339 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7340
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7341 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]7342 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7343 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7344
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7345 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7346 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7347 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7348
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7349 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7350 hdr_beg = hdr_next;
7351 hdr_end = hdr_beg + cur_hdr->len;
7352 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7353
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7354 /* We have one full header between hdr_beg and hdr_end, and the
7355 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7356 * "Cookie:" headers.
7357 */
7358
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7359 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7360 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7361 old_idx = cur_idx;
7362 continue;
7363 }
7364
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7365 del_from = NULL; /* nothing to be deleted */
7366 preserve_hdr = 0; /* assume we may kill the whole header */
7367
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7368 /* Now look for cookies. Conforming to RFC2109, we have to support
7369 * attributes whose name begin with a '$', and associate them with
7370 * the right cookie, if we want to delete this cookie.
7371 * So there are 3 cases for each cookie read :
7372 * 1) it's a special attribute, beginning with a '$' : ignore it.
7373 * 2) it's a server id cookie that we *MAY* want to delete : save
7374 * some pointers on it (last semi-colon, beginning of cookie...)
7375 * 3) it's an application cookie : we *MAY* have to delete a previous
7376 * "special" cookie.
7377 * At the end of loop, if a "special" cookie remains, we may have to
7378 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7379 * *MUST* delete it.
7380 *
7381 * Note: RFC2965 is unclear about the processing of spaces around
7382 * the equal sign in the ATTR=VALUE form. A careful inspection of
7383 * the RFC explicitly allows spaces before it, and not within the
7384 * tokens (attrs or values). An inspection of RFC2109 allows that
7385 * too but section 10.1.3 lets one think that spaces may be allowed
7386 * after the equal sign too, resulting in some (rare) buggy
7387 * implementations trying to do that. So let's do what servers do.
7388 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
7389 * allowed quoted strings in values, with any possible character
7390 * after a backslash, including control chars and delimitors, which
7391 * causes parsing to become ambiguous. Browsers also allow spaces
7392 * within values even without quotes.
7393 *
7394 * We have to keep multiple pointers in order to support cookie
7395 * removal at the beginning, middle or end of header without
7396 * corrupting the header. All of these headers are valid :
7397 *
7398 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
7399 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
7400 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
7401 * | | | | | | | | |
7402 * | | | | | | | | hdr_end <--+
7403 * | | | | | | | +--> next
7404 * | | | | | | +----> val_end
7405 * | | | | | +-----------> val_beg
7406 * | | | | +--------------> equal
7407 * | | | +----------------> att_end
7408 * | | +---------------------> att_beg
7409 * | +--------------------------> prev
7410 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7411 */
7412
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7413 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
7414 /* Iterate through all cookies on this line */
7415
7416 /* find att_beg */
7417 att_beg = prev + 1;
7418 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7419 att_beg++;
7420
7421 /* find att_end : this is the first character after the last non
7422 * space before the equal. It may be equal to hdr_end.
7423 */
7424 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7425
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7426 while (equal < hdr_end) {
7427 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7428 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7429 if (http_is_spht[(unsigned char)*equal++])
7430 continue;
7431 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7432 }
7433
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7434 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7435 * is between <att_beg> and <equal>, both may be identical.
7436 */
7437
7438 /* look for end of cookie if there is an equal sign */
7439 if (equal < hdr_end && *equal == '=') {
7440 /* look for the beginning of the value */
7441 val_beg = equal + 1;
7442 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7443 val_beg++;
7444
7445 /* find the end of the value, respecting quotes */
7446 next = find_cookie_value_end(val_beg, hdr_end);
7447
7448 /* make val_end point to the first white space or delimitor after the value */
7449 val_end = next;
7450 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7451 val_end--;
7452 } else {
7453 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7454 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7455
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7456 /* We have nothing to do with attributes beginning with '$'. However,
7457 * they will automatically be removed if a header before them is removed,
7458 * since they're supposed to be linked together.
7459 */
7460 if (*att_beg == '$')
7461 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7462
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7463 /* Ignore cookies with no equal sign */
7464 if (equal == next) {
7465 /* This is not our cookie, so we must preserve it. But if we already
7466 * scheduled another cookie for removal, we cannot remove the
7467 * complete header, but we can remove the previous block itself.
7468 */
7469 preserve_hdr = 1;
7470 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7471 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7472 val_end += delta;
7473 next += delta;
7474 hdr_end += delta;
7475 hdr_next += delta;
7476 cur_hdr->len += delta;
7477 http_msg_move_end(&txn->req, delta);
7478 prev = del_from;
7479 del_from = NULL;
7480 }
7481 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7482 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7483
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7484 /* if there are spaces around the equal sign, we need to
7485 * strip them otherwise we'll get trouble for cookie captures,
7486 * or even for rewrites. Since this happens extremely rarely,
7487 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7488 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7489 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7490 int stripped_before = 0;
7491 int stripped_after = 0;
7492
7493 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7494 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7495 equal += stripped_before;
7496 val_beg += stripped_before;
7497 }
7498
7499 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7500 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7501 val_beg += stripped_after;
7502 stripped_before += stripped_after;
7503 }
7504
7505 val_end += stripped_before;
7506 next += stripped_before;
7507 hdr_end += stripped_before;
7508 hdr_next += stripped_before;
7509 cur_hdr->len += stripped_before;
7510 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7511 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7512 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7513
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7514 /* First, let's see if we want to capture this cookie. We check
7515 * that we don't already have a client side cookie, because we
7516 * can only capture one. Also as an optimisation, we ignore
7517 * cookies shorter than the declared name.
7518 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7519 if (sess->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7520 (val_end - att_beg >= sess->fe->capture_namelen) &&
7521 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7522 int log_len = val_end - att_beg;
7523
7524 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7525 Alert("HTTP logging : out of memory.\n");
7526 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7527 if (log_len > sess->fe->capture_len)
7528 log_len = sess->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7529 memcpy(txn->cli_cookie, att_beg, log_len);
7530 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7531 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7532 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7533
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7534 /* Persistence cookies in passive, rewrite or insert mode have the
7535 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7536 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7537 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7538 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7539 * For cookies in prefix mode, the form is :
7540 *
7541 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7542 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7543 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
7544 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
7545 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7546 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7547
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7548 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7549 * have the server ID between val_beg and delim, and the original cookie between
7550 * delim+1 and val_end. Otherwise, delim==val_end :
7551 *
7552 * Cookie: NAME=SRV; # in all but prefix modes
7553 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7554 * | || || | |+-> next
7555 * | || || | +--> val_end
7556 * | || || +---------> delim
7557 * | || |+------------> val_beg
7558 * | || +-------------> att_end = equal
7559 * | |+-----------------> att_beg
7560 * | +------------------> prev
7561 * +-------------------------> hdr_beg
7562 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7563
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7564 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7565 for (delim = val_beg; delim < val_end; delim++)
7566 if (*delim == COOKIE_DELIM)
7567 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7568 } else {
7569 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7570 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7571 /* Now check if the cookie contains a date field, which would
7572 * appear after a vertical bar ('|') just after the server name
7573 * and before the delimiter.
7574 */
7575 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7576 if (vbar1) {
7577 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7578 * right is the last seen date. It is a base64 encoded
7579 * 30-bit value representing the UNIX date since the
7580 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7581 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7582 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7583 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7584 if (val_end - vbar1 >= 5) {
7585 val = b64tos30(vbar1);
7586 if (val > 0)
7587 txn->cookie_last_date = val << 2;
7588 }
7589 /* look for a second vertical bar */
7590 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7591 if (vbar1 && (val_end - vbar1 > 5)) {
7592 val = b64tos30(vbar1 + 1);
7593 if (val > 0)
7594 txn->cookie_first_date = val << 2;
7595 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7596 }
7597 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7598
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7599 /* if the cookie has an expiration date and the proxy wants to check
7600 * it, then we do that now. We first check if the cookie is too old,
7601 * then only if it has expired. We detect strict overflow because the
7602 * time resolution here is not great (4 seconds). Cookies with dates
7603 * in the future are ignored if their offset is beyond one day. This
7604 * allows an admin to fix timezone issues without expiring everyone
7605 * and at the same time avoids keeping unwanted side effects for too
7606 * long.
7607 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7608 if (txn->cookie_first_date && s->be->cookie_maxlife &&
7609 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7610 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7611 txn->flags &= ~TX_CK_MASK;
7612 txn->flags |= TX_CK_OLD;
7613 delim = val_beg; // let's pretend we have not found the cookie
7614 txn->cookie_first_date = 0;
7615 txn->cookie_last_date = 0;
7616 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7617 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
7618 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7619 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7620 txn->flags &= ~TX_CK_MASK;
7621 txn->flags |= TX_CK_EXPIRED;
7622 delim = val_beg; // let's pretend we have not found the cookie
7623 txn->cookie_first_date = 0;
7624 txn->cookie_last_date = 0;
7625 }
7626
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7627 /* Here, we'll look for the first running server which supports the cookie.
7628 * This allows to share a same cookie between several servers, for example
7629 * to dedicate backup servers to specific servers only.
7630 * However, to prevent clients from sticking to cookie-less backup server
7631 * when they have incidentely learned an empty cookie, we simply ignore
7632 * empty cookies and mark them as invalid.
7633 * The same behaviour is applied when persistence must be ignored.
7634 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7635 if ((delim == val_beg) || (s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7636 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7637
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7638 while (srv) {
7639 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7640 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7641 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7642 (s->be->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7643 (s->flags & SF_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7644 /* we found the server and we can use it */
7645 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7646 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7647 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7648 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7649 break;
7650 } else {
7651 /* we found a server, but it's down,
7652 * mark it as such and go on in case
7653 * another one is available.
7654 */
7655 txn->flags &= ~TX_CK_MASK;
7656 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7657 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7658 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7659 srv = srv->next;
7660 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7661
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7662 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7663 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7664 txn->flags &= ~TX_CK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7665 if ((s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7666 txn->flags |= TX_CK_UNUSED;
7667 else
7668 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7669 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7670
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7671 /* depending on the cookie mode, we may have to either :
7672 * - delete the complete cookie if we're in insert+indirect mode, so that
7673 * the server never sees it ;
7674 * - remove the server id from the cookie value, and tag the cookie as an
7675 * application cookie so that it does not get accidentely removed later,
7676 * if we're in cookie prefix mode
7677 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7678 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7679 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7680
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7681 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7682 val_end += delta;
7683 next += delta;
7684 hdr_end += delta;
7685 hdr_next += delta;
7686 cur_hdr->len += delta;
7687 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7688
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7689 del_from = NULL;
7690 preserve_hdr = 1; /* we want to keep this cookie */
7691 }
7692 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7693 (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]7694 del_from = prev;
7695 }
7696 } else {
7697 /* This is not our cookie, so we must preserve it. But if we already
7698 * scheduled another cookie for removal, we cannot remove the
7699 * complete header, but we can remove the previous block itself.
7700 */
7701 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7702
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7703 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7704 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7705 if (att_beg >= del_from)
7706 att_beg += delta;
7707 if (att_end >= del_from)
7708 att_end += delta;
7709 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7710 val_end += delta;
7711 next += delta;
7712 hdr_end += delta;
7713 hdr_next += delta;
7714 cur_hdr->len += delta;
7715 http_msg_move_end(&txn->req, delta);
7716 prev = del_from;
7717 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7718 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7719 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7720
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7721 /* continue with next cookie on this header line */
7722 att_beg = next;
7723 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7724
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7725 /* There are no more cookies on this line.
7726 * We may still have one (or several) marked for deletion at the
7727 * end of the line. We must do this now in two ways :
7728 * - if some cookies must be preserved, we only delete from the
7729 * mark to the end of line ;
7730 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7731 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7732 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7733 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7734 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7735 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7736 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7737 cur_hdr->len += delta;
7738 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7739 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7740
7741 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7742 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7743 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7744 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7745 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7746 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7747 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7748 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7749 }
7750
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7751 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7752 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7753 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7754}
7755
7756
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7757/* Iterate the same filter through all response headers contained in <rtr>.
7758 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7759 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7760int 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]7761{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7762 char *cur_ptr, *cur_end, *cur_next;
7763 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7764 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7765 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7766 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7767
7768 last_hdr = 0;
7769
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7770 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7771 old_idx = 0;
7772
7773 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7774 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7775 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7776 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7777 (exp->action == ACT_ALLOW ||
7778 exp->action == ACT_DENY))
7779 return 0;
7780
7781 cur_idx = txn->hdr_idx.v[old_idx].next;
7782 if (!cur_idx)
7783 break;
7784
7785 cur_hdr = &txn->hdr_idx.v[cur_idx];
7786 cur_ptr = cur_next;
7787 cur_end = cur_ptr + cur_hdr->len;
7788 cur_next = cur_end + cur_hdr->cr + 1;
7789
7790 /* Now we have one header between cur_ptr and cur_end,
7791 * and the next header starts at cur_next.
7792 */
7793
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7794 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]7795 switch (exp->action) {
7796 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7797 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7798 last_hdr = 1;
7799 break;
7800
7801 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7802 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7803 last_hdr = 1;
7804 break;
7805
7806 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7807 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7808 if (trash.len < 0)
7809 return -1;
7810
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7811 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7812 /* FIXME: if the user adds a newline in the replacement, the
7813 * index will not be recalculated for now, and the new line
7814 * will not be counted as a new header.
7815 */
7816
7817 cur_end += delta;
7818 cur_next += delta;
7819 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7820 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7821 break;
7822
7823 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7824 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7825 cur_next += delta;
7826
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7827 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7828 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7829 txn->hdr_idx.used--;
7830 cur_hdr->len = 0;
7831 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7832 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7833 break;
7834
7835 }
7836 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7837
7838 /* keep the link from this header to next one in case of later
7839 * removal of next header.
7840 */
7841 old_idx = cur_idx;
7842 }
7843 return 0;
7844}
7845
7846
7847/* Apply the filter to the status line in the response buffer <rtr>.
7848 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7849 * or -1 if a replacement resulted in an invalid status line.
7850 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7851int 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]7852{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7853 char *cur_ptr, *cur_end;
7854 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7855 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7856 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7857
7858
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7859 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7860 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7861 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7862 (exp->action == ACT_ALLOW ||
7863 exp->action == ACT_DENY))
7864 return 0;
7865 else if (exp->action == ACT_REMOVE)
7866 return 0;
7867
7868 done = 0;
7869
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7870 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7871 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7872
7873 /* Now we have the status line between cur_ptr and cur_end */
7874
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7875 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]7876 switch (exp->action) {
7877 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7878 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7879 done = 1;
7880 break;
7881
7882 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7883 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7884 done = 1;
7885 break;
7886
7887 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7888 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7889 if (trash.len < 0)
7890 return -1;
7891
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7892 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7893 /* FIXME: if the user adds a newline in the replacement, the
7894 * index will not be recalculated for now, and the new line
7895 * will not be counted as a new header.
7896 */
7897
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7898 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7899 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7900 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7901 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7902 cur_ptr, cur_end + 1,
7903 NULL, NULL);
7904 if (unlikely(!cur_end))
7905 return -1;
7906
7907 /* we have a full respnse and we know that we have either a CR
7908 * or an LF at <ptr>.
7909 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7910 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]7911 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]7912 /* there is no point trying this regex on headers */
7913 return 1;
7914 }
7915 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7916 return done;
7917}
7918
7919
7920
7921/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7922 * 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]7923 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7924 * unparsable response.
7925 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7926int apply_filters_to_response(struct stream *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7927{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7928 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7929 struct http_txn *txn = s->txn;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7930 struct hdr_exp *exp;
7931
7932 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7933 int ret;
7934
7935 /*
7936 * The interleaving of transformations and verdicts
7937 * makes it difficult to decide to continue or stop
7938 * the evaluation.
7939 */
7940
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7941 if (txn->flags & TX_SVDENY)
7942 break;
7943
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7944 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7945 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7946 exp->action == ACT_PASS)) {
7947 exp = exp->next;
7948 continue;
7949 }
7950
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7951 /* if this filter had a condition, evaluate it now and skip to
7952 * next filter if the condition does not match.
7953 */
7954 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7955 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]7956 ret = acl_pass(ret);
7957 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7958 ret = !ret;
7959 if (!ret)
7960 continue;
7961 }
7962
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7963 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7964 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7965 if (unlikely(ret < 0))
7966 return -1;
7967
7968 if (likely(ret == 0)) {
7969 /* The filter did not match the response, it can be
7970 * iterated through all headers.
7971 */
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7972 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
7973 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7974 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7975 }
7976 return 0;
7977}
7978
7979
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7980/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7981 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7982 * desirable to call it only when needed. This function is also used when we
7983 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7984 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7985void manage_server_side_cookies(struct stream *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7986{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7987 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7988 struct session *sess = s->sess;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7989 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7990 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7991 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7992 char *hdr_beg, *hdr_end, *hdr_next;
7993 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7994
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7995 /* Iterate through the headers.
7996 * we start with the start line.
7997 */
7998 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7999 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8000
8001 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
8002 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8003 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8004
8005 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8006 hdr_beg = hdr_next;
8007 hdr_end = hdr_beg + cur_hdr->len;
8008 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8009
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8010 /* We have one full header between hdr_beg and hdr_end, and the
8011 * next header starts at hdr_next. We're only interested in
8012 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8013 */
8014
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8015 is_cookie2 = 0;
8016 prev = hdr_beg + 10;
8017 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8018 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8019 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
8020 if (!val) {
8021 old_idx = cur_idx;
8022 continue;
8023 }
8024 is_cookie2 = 1;
8025 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8026 }
8027
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8028 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
8029 * <prev> points to the colon.
8030 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8031 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8032
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8033 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
8034 * check-cache is enabled) and we are not interested in checking
8035 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]8036 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]8037 if (s->be->cookie_name == NULL && sess->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8038 return;
8039
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8040 /* OK so now we know we have to process this response cookie.
8041 * The format of the Set-Cookie header is slightly different
8042 * from the format of the Cookie header in that it does not
8043 * support the comma as a cookie delimiter (thus the header
8044 * cannot be folded) because the Expires attribute described in
8045 * the original Netscape's spec may contain an unquoted date
8046 * with a comma inside. We have to live with this because
8047 * many browsers don't support Max-Age and some browsers don't
8048 * support quoted strings. However the Set-Cookie2 header is
8049 * clean.
8050 *
8051 * We have to keep multiple pointers in order to support cookie
8052 * removal at the beginning, middle or end of header without
8053 * corrupting the header (in case of set-cookie2). A special
8054 * pointer, <scav> points to the beginning of the set-cookie-av
8055 * fields after the first semi-colon. The <next> pointer points
8056 * either to the end of line (set-cookie) or next unquoted comma
8057 * (set-cookie2). All of these headers are valid :
8058 *
8059 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
8060 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8061 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8062 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
8063 * | | | | | | | | | |
8064 * | | | | | | | | +-> next hdr_end <--+
8065 * | | | | | | | +------------> scav
8066 * | | | | | | +--------------> val_end
8067 * | | | | | +--------------------> val_beg
8068 * | | | | +----------------------> equal
8069 * | | | +------------------------> att_end
8070 * | | +----------------------------> att_beg
8071 * | +------------------------------> prev
8072 * +-----------------------------------------> hdr_beg
8073 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8074
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8075 for (; prev < hdr_end; prev = next) {
8076 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8077
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8078 /* find att_beg */
8079 att_beg = prev + 1;
8080 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8081 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8082
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8083 /* find att_end : this is the first character after the last non
8084 * space before the equal. It may be equal to hdr_end.
8085 */
8086 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8087
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8088 while (equal < hdr_end) {
8089 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
8090 break;
8091 if (http_is_spht[(unsigned char)*equal++])
8092 continue;
8093 att_end = equal;
8094 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8095
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8096 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8097 * is between <att_beg> and <equal>, both may be identical.
8098 */
8099
8100 /* look for end of cookie if there is an equal sign */
8101 if (equal < hdr_end && *equal == '=') {
8102 /* look for the beginning of the value */
8103 val_beg = equal + 1;
8104 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8105 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8106
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8107 /* find the end of the value, respecting quotes */
8108 next = find_cookie_value_end(val_beg, hdr_end);
8109
8110 /* make val_end point to the first white space or delimitor after the value */
8111 val_end = next;
8112 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8113 val_end--;
8114 } else {
8115 /* <equal> points to next comma, semi-colon or EOL */
8116 val_beg = val_end = next = equal;
8117 }
8118
8119 if (next < hdr_end) {
8120 /* Set-Cookie2 supports multiple cookies, and <next> points to
8121 * a colon or semi-colon before the end. So skip all attr-value
8122 * pairs and look for the next comma. For Set-Cookie, since
8123 * commas are permitted in values, skip to the end.
8124 */
8125 if (is_cookie2)
8126 next = find_hdr_value_end(next, hdr_end);
8127 else
8128 next = hdr_end;
8129 }
8130
8131 /* Now everything is as on the diagram above */
8132
8133 /* Ignore cookies with no equal sign */
8134 if (equal == val_end)
8135 continue;
8136
8137 /* If there are spaces around the equal sign, we need to
8138 * strip them otherwise we'll get trouble for cookie captures,
8139 * or even for rewrites. Since this happens extremely rarely,
8140 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8141 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8142 if (unlikely(att_end != equal || val_beg > equal + 1)) {
8143 int stripped_before = 0;
8144 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8145
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8146 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8147 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8148 equal += stripped_before;
8149 val_beg += stripped_before;
8150 }
8151
8152 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8153 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8154 val_beg += stripped_after;
8155 stripped_before += stripped_after;
8156 }
8157
8158 val_end += stripped_before;
8159 next += stripped_before;
8160 hdr_end += stripped_before;
8161 hdr_next += stripped_before;
8162 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]8163 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8164 }
8165
8166 /* First, let's see if we want to capture this cookie. We check
8167 * that we don't already have a server side cookie, because we
8168 * can only capture one. Also as an optimisation, we ignore
8169 * cookies shorter than the declared name.
8170 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8171 if (sess->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]8172 txn->srv_cookie == NULL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8173 (val_end - att_beg >= sess->fe->capture_namelen) &&
8174 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8175 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]8176 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8177 Alert("HTTP logging : out of memory.\n");
8178 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8179 else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8180 if (log_len > sess->fe->capture_len)
8181 log_len = sess->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8182 memcpy(txn->srv_cookie, att_beg, log_len);
8183 txn->srv_cookie[log_len] = 0;
8184 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8185 }
8186
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8187 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8188 /* now check if we need to process it for persistence */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8189 if (!(s->flags & SF_IGNORE_PRST) &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8190 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
8191 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8192 /* assume passive cookie by default */
8193 txn->flags &= ~TX_SCK_MASK;
8194 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8195
8196 /* If the cookie is in insert mode on a known server, we'll delete
8197 * this occurrence because we'll insert another one later.
8198 * 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]8199 * a direct access.
8200 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8201 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]8202 /* The "preserve" flag was set, we don't want to touch the
8203 * server's cookie.
8204 */
8205 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8206 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8207 ((s->flags & SF_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8208 /* this cookie must be deleted */
8209 if (*prev == ':' && next == hdr_end) {
8210 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8211 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8212 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8213 txn->hdr_idx.used--;
8214 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8215 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8216 hdr_next += delta;
8217 http_msg_move_end(&txn->rsp, delta);
8218 /* note: while both invalid now, <next> and <hdr_end>
8219 * are still equal, so the for() will stop as expected.
8220 */
8221 } else {
8222 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8223 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8224 next = prev;
8225 hdr_end += delta;
8226 hdr_next += delta;
8227 cur_hdr->len += delta;
8228 http_msg_move_end(&txn->rsp, delta);
8229 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8230 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8231 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8232 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8233 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8234 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8235 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8236 * with this server since we know it.
8237 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8238 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8239 next += delta;
8240 hdr_end += delta;
8241 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8242 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8243 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8244
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8245 txn->flags &= ~TX_SCK_MASK;
8246 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8247 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8248 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8249 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8250 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8251 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8252 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8253 next += delta;
8254 hdr_end += delta;
8255 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8256 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8257 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8258
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8259 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8260 txn->flags &= ~TX_SCK_MASK;
8261 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8262 }
8263 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8264 /* that's done for this cookie, check the next one on the same
8265 * line when next != hdr_end (only if is_cookie2).
8266 */
8267 }
8268 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8269 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8270 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8271}
8272
8273
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8274/*
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8275 * Check if response is cacheable or not. Updates s->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8276 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8277void check_response_for_cacheability(struct stream *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8278{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8279 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8280 char *p1, *p2;
8281
8282 char *cur_ptr, *cur_end, *cur_next;
8283 int cur_idx;
8284
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]8285 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8286 return;
8287
8288 /* Iterate through the headers.
8289 * we start with the start line.
8290 */
8291 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8292 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8293
8294 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
8295 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8296 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8297
8298 cur_hdr = &txn->hdr_idx.v[cur_idx];
8299 cur_ptr = cur_next;
8300 cur_end = cur_ptr + cur_hdr->len;
8301 cur_next = cur_end + cur_hdr->cr + 1;
8302
8303 /* We have one full header between cur_ptr and cur_end, and the
8304 * next header starts at cur_next. We're only interested in
8305 * "Cookie:" headers.
8306 */
8307
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8308 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
8309 if (val) {
8310 if ((cur_end - (cur_ptr + val) >= 8) &&
8311 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
8312 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
8313 return;
8314 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8315 }
8316
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8317 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
8318 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8319 continue;
8320
8321 /* OK, right now we know we have a cache-control header at cur_ptr */
8322
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8323 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8324
8325 if (p1 >= cur_end) /* no more info */
8326 continue;
8327
8328 /* p1 is at the beginning of the value */
8329 p2 = p1;
8330
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]8331 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8332 p2++;
8333
8334 /* we have a complete value between p1 and p2 */
8335 if (p2 < cur_end && *p2 == '=') {
8336 /* we have something of the form no-cache="set-cookie" */
8337 if ((cur_end - p1 >= 21) &&
8338 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
8339 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8340 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8341 continue;
8342 }
8343
8344 /* OK, so we know that either p2 points to the end of string or to a comma */
8345 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8346 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8347 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8348 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8349 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8350 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8351 return;
8352 }
8353
8354 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8355 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8356 continue;
8357 }
8358 }
8359}
8360
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8361
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8362/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8363 * 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]8364 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8365 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8366 * 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]8367 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8368 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8369 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8370 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8371int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8372{
8373 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8374 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8375 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8376
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8377 if (!uri_auth)
8378 return 0;
8379
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8380 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]8381 return 0;
8382
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8383 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8384 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8385 return 0;
8386
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8387 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8388 return 0;
8389
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8390 return 1;
8391}
8392
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8393/*
8394 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8395 * By default it tries to report the error position as msg->err_pos. However if
8396 * this one is not set, it will then report msg->next, which is the last known
8397 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8398 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8399 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8400void http_capture_bad_message(struct error_snapshot *es, struct stream *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8401 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8402 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8403{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8404 struct session *sess = strm_sess(s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8405 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8406 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8407
Willy Tarreauf3764b72016-03-31 13:45:10 +0200[diff] [blame]8408 es->len = MIN(chn->buf->i, global.tune.bufsize);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8409 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8410 len1 = MIN(len1, es->len);
8411 len2 = es->len - len1; /* remaining data if buffer wraps */
8412
Willy Tarreauf3764b72016-03-31 13:45:10 +0200[diff] [blame]8413 if (!es->buf)
8414 es->buf = malloc(global.tune.bufsize);
8415
8416 if (es->buf) {
8417 memcpy(es->buf, chn->buf->p, len1);
8418 if (len2)
8419 memcpy(es->buf + len1, chn->buf->data, len2);
8420 }
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8421
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8422 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8423 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8424 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8425 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8426
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8427 es->when = date; // user-visible date
8428 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8429 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8430 es->oe = other_end;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8431 if (objt_conn(sess->origin))
8432 es->src = __objt_conn(sess->origin)->addr.from;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8433 else
8434 memset(&es->src, 0, sizeof(es->src));
8435
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8436 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8437 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8438 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8439 es->s_flags = s->flags;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8440 es->t_flags = s->txn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8441 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8442 es->b_out = chn->buf->o;
8443 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8444 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8445 es->m_clen = msg->chunk_len;
8446 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8447}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8448
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8449/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8450 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8451 * performed over the whole headers. Otherwise it must contain a valid header
8452 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8453 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8454 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8455 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8456 * -1. The value fetch stops at commas, so this function is suited for use with
8457 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8458 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8459 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8460unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8461 struct hdr_idx *idx, int occ,
8462 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8463{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8464 struct hdr_ctx local_ctx;
8465 char *ptr_hist[MAX_HDR_HISTORY];
8466 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8467 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8468 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8469
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8470 if (!ctx) {
8471 local_ctx.idx = 0;
8472 ctx = &local_ctx;
8473 }
8474
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8475 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8476 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8477 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8478 occ--;
8479 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8480 *vptr = ctx->line + ctx->val;
8481 *vlen = ctx->vlen;
8482 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8483 }
8484 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8485 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8486 }
8487
8488 /* negative occurrence, we scan all the list then walk back */
8489 if (-occ > MAX_HDR_HISTORY)
8490 return 0;
8491
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8492 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8493 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8494 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8495 len_hist[hist_ptr] = ctx->vlen;
8496 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8497 hist_ptr = 0;
8498 found++;
8499 }
8500 if (-occ > found)
8501 return 0;
8502 /* 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]8503 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8504 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8505 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8506 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8507 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8508 if (hist_ptr >= MAX_HDR_HISTORY)
8509 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8510 *vptr = ptr_hist[hist_ptr];
8511 *vlen = len_hist[hist_ptr];
8512 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8513}
8514
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8515/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8516 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8517 * performed over the whole headers. Otherwise it must contain a valid header
8518 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8519 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8520 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8521 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8522 * -1. This function differs from http_get_hdr() in that it only returns full
8523 * line header values and does not stop at commas.
8524 * The return value is 0 if nothing was found, or non-zero otherwise.
8525 */
8526unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8527 struct hdr_idx *idx, int occ,
8528 struct hdr_ctx *ctx, char **vptr, int *vlen)
8529{
8530 struct hdr_ctx local_ctx;
8531 char *ptr_hist[MAX_HDR_HISTORY];
8532 int len_hist[MAX_HDR_HISTORY];
8533 unsigned int hist_ptr;
8534 int found;
8535
8536 if (!ctx) {
8537 local_ctx.idx = 0;
8538 ctx = &local_ctx;
8539 }
8540
8541 if (occ >= 0) {
8542 /* search from the beginning */
8543 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8544 occ--;
8545 if (occ <= 0) {
8546 *vptr = ctx->line + ctx->val;
8547 *vlen = ctx->vlen;
8548 return 1;
8549 }
8550 }
8551 return 0;
8552 }
8553
8554 /* negative occurrence, we scan all the list then walk back */
8555 if (-occ > MAX_HDR_HISTORY)
8556 return 0;
8557
8558 found = hist_ptr = 0;
8559 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8560 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8561 len_hist[hist_ptr] = ctx->vlen;
8562 if (++hist_ptr >= MAX_HDR_HISTORY)
8563 hist_ptr = 0;
8564 found++;
8565 }
8566 if (-occ > found)
8567 return 0;
Nenad Merdanovic69ad4b92016-03-29 13:14:30 +0200[diff] [blame]8568
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8569 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
Nenad Merdanovic69ad4b92016-03-29 13:14:30 +0200[diff] [blame]8570 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8571 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8572 * to remain in the 0..9 range.
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8573 */
Nenad Merdanovic69ad4b92016-03-29 13:14:30 +0200[diff] [blame]8574 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8575 if (hist_ptr >= MAX_HDR_HISTORY)
8576 hist_ptr -= MAX_HDR_HISTORY;
8577 *vptr = ptr_hist[hist_ptr];
8578 *vlen = len_hist[hist_ptr];
8579 return 1;
8580}
8581
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8582/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8583 * Print a debug line with a header. Always stop at the first CR or LF char,
8584 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8585 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8586 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8587void debug_hdr(const char *dir, struct stream *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8588{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8589 struct session *sess = strm_sess(s);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8590 int max;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8591
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8592 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8593 dir,
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8594 objt_conn(sess->origin) ? (unsigned short)objt_conn(sess->origin)->t.sock.fd : -1,
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]8595 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]8596
8597 for (max = 0; start + max < end; max++)
8598 if (start[max] == '\r' || start[max] == '\n')
8599 break;
8600
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8601 UBOUND(max, trash.size - trash.len - 3);
8602 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8603 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8604 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8605}
8606
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8607
8608/* Allocate a new HTTP transaction for stream <s> unless there is one already.
8609 * The hdr_idx is allocated as well. In case of allocation failure, everything
8610 * allocated is freed and NULL is returned. Otherwise the new transaction is
8611 * assigned to the stream and returned.
8612 */
8613struct http_txn *http_alloc_txn(struct stream *s)
8614{
8615 struct http_txn *txn = s->txn;
8616
8617 if (txn)
8618 return txn;
8619
8620 txn = pool_alloc2(pool2_http_txn);
8621 if (!txn)
8622 return txn;
8623
8624 txn->hdr_idx.size = global.tune.max_http_hdr;
8625 txn->hdr_idx.v = pool_alloc2(pool2_hdr_idx);
8626 if (!txn->hdr_idx.v) {
8627 pool_free2(pool2_http_txn, txn);
8628 return NULL;
8629 }
8630
8631 s->txn = txn;
8632 return txn;
8633}
8634
Thierry FOURNIERfd50f0b2015-09-25 18:53:18 +0200[diff] [blame]8635void http_txn_reset_req(struct http_txn *txn)
8636{
8637 txn->req.flags = 0;
8638 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
8639 txn->req.next = 0;
8640 txn->req.chunk_len = 0LL;
8641 txn->req.body_len = 0LL;
8642 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8643}
8644
8645void http_txn_reset_res(struct http_txn *txn)
8646{
8647 txn->rsp.flags = 0;
8648 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
8649 txn->rsp.next = 0;
8650 txn->rsp.chunk_len = 0LL;
8651 txn->rsp.body_len = 0LL;
8652 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
8653}
8654
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8655/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8656 * Initialize a new HTTP transaction for stream <s>. It is assumed that all
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8657 * the required fields are properly allocated and that we only need to (re)init
8658 * them. This should be used before processing any new request.
8659 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8660void http_init_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8661{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8662 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8663 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8664
8665 txn->flags = 0;
8666 txn->status = -1;
8667
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8668 txn->cookie_first_date = 0;
8669 txn->cookie_last_date = 0;
8670
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8671 txn->srv_cookie = NULL;
8672 txn->cli_cookie = NULL;
8673 txn->uri = NULL;
8674
Thierry FOURNIERfd50f0b2015-09-25 18:53:18 +0200[diff] [blame]8675 http_txn_reset_req(txn);
8676 http_txn_reset_res(txn);
8677
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8678 txn->req.chn = &s->req;
8679 txn->rsp.chn = &s->res;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8680
8681 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8682
8683 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8684 if (fe->options2 & PR_O2_REQBUG_OK)
8685 txn->req.err_pos = -1; /* let buggy requests pass */
8686
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8687 if (txn->hdr_idx.v)
8688 hdr_idx_init(&txn->hdr_idx);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]8689
8690 vars_init(&s->vars_txn, SCOPE_TXN);
8691 vars_init(&s->vars_reqres, SCOPE_REQ);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8692}
8693
8694/* to be used at the end of a transaction */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8695void http_end_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8696{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8697 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8698 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8699
8700 /* these ones will have been dynamically allocated */
8701 pool_free2(pool2_requri, txn->uri);
8702 pool_free2(pool2_capture, txn->cli_cookie);
8703 pool_free2(pool2_capture, txn->srv_cookie);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8704 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8705
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8706 s->unique_id = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8707 txn->uri = NULL;
8708 txn->srv_cookie = NULL;
8709 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8710
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8711 if (s->req_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8712 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8713 for (h = fe->req_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8714 pool_free2(h->pool, s->req_cap[h->index]);
8715 memset(s->req_cap, 0, fe->nb_req_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8716 }
8717
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8718 if (s->res_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8719 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8720 for (h = fe->rsp_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8721 pool_free2(h->pool, s->res_cap[h->index]);
8722 memset(s->res_cap, 0, fe->nb_rsp_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8723 }
8724
Willy Tarreau6204cd92016-03-10 16:33:04 +0100[diff] [blame]8725 vars_prune(&s->vars_txn, s->sess, s);
8726 vars_prune(&s->vars_reqres, s->sess, s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8727}
8728
8729/* to be used at the end of a transaction to prepare a new one */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8730void http_reset_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8731{
8732 http_end_txn(s);
8733 http_init_txn(s);
8734
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]8735 /* reinitialise the current rule list pointer to NULL. We are sure that
8736 * any rulelist match the NULL pointer.
8737 */
8738 s->current_rule_list = NULL;
8739
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8740 s->be = strm_fe(s);
8741 s->logs.logwait = strm_fe(s)->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8742 s->logs.level = 0;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8743 stream_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8744 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8745 /* re-init store persistence */
8746 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]8747 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8748
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8749 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8750
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8751 s->req.flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8752
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8753 /* We must trim any excess data from the response buffer, because we
8754 * may have blocked an invalid response from a server that we don't
8755 * want to accidentely forward once we disable the analysers, nor do
8756 * we want those data to come along with next response. A typical
8757 * example of such data would be from a buggy server responding to
8758 * a HEAD with some data, or sending more than the advertised
8759 * content-length.
8760 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8761 if (unlikely(s->res.buf->i))
8762 s->res.buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8763
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8764 s->req.rto = strm_fe(s)->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8765 s->req.wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8766
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8767 s->res.rto = TICK_ETERNITY;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8768 s->res.wto = strm_fe(s)->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8769
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8770 s->req.rex = TICK_ETERNITY;
8771 s->req.wex = TICK_ETERNITY;
8772 s->req.analyse_exp = TICK_ETERNITY;
8773 s->res.rex = TICK_ETERNITY;
8774 s->res.wex = TICK_ETERNITY;
8775 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8776}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8777
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8778void free_http_res_rules(struct list *r)
8779{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8780 struct act_rule *tr, *pr;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8781
8782 list_for_each_entry_safe(pr, tr, r, list) {
8783 LIST_DEL(&pr->list);
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8784 regex_free(&pr->arg.hdr_add.re);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8785 free(pr);
8786 }
8787}
8788
8789void free_http_req_rules(struct list *r)
8790{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8791 struct act_rule *tr, *pr;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8792
8793 list_for_each_entry_safe(pr, tr, r, list) {
8794 LIST_DEL(&pr->list);
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8795 if (pr->action == ACT_HTTP_REQ_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8796 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8797
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8798 regex_free(&pr->arg.hdr_add.re);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8799 free(pr);
8800 }
8801}
8802
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8803/* parse an "http-request" rule */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8804struct 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]8805{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8806 struct act_rule *rule;
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]8807 struct action_kw *custom = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8808 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8809 char *error;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8810
Vincent Bernat02779b62016-04-03 13:48:43 +0200[diff] [blame]8811 rule = calloc(1, sizeof(*rule));
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8812 if (!rule) {
8813 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8814 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8815 }
8816
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]8817 rule->deny_status = HTTP_ERR_403;
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8818 if (!strcmp(args[0], "allow")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8819 rule->action = ACT_ACTION_ALLOW;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8820 cur_arg = 1;
Willy Tarreau5bd67592014-04-28 22:00:46 +0200[diff] [blame]8821 } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block")) {
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]8822 int code;
8823 int hc;
8824
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8825 rule->action = ACT_ACTION_DENY;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8826 cur_arg = 1;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]8827 if (strcmp(args[cur_arg], "deny_status") == 0) {
8828 cur_arg++;
8829 if (!args[cur_arg]) {
8830 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing status code.\n",
8831 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
8832 goto out_err;
8833 }
8834
8835 code = atol(args[cur_arg]);
8836 cur_arg++;
8837 for (hc = 0; hc < HTTP_ERR_SIZE; hc++) {
8838 if (http_err_codes[hc] == code) {
8839 rule->deny_status = hc;
8840 break;
8841 }
8842 }
8843
8844 if (hc >= HTTP_ERR_SIZE) {
8845 Warning("parsing [%s:%d] : status code %d not handled, using default code 403.\n",
8846 file, linenum, code);
8847 }
8848 }
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8849 } else if (!strcmp(args[0], "tarpit")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8850 rule->action = ACT_HTTP_REQ_TARPIT;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8851 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8852 } else if (!strcmp(args[0], "auth")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8853 rule->action = ACT_HTTP_REQ_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8854 cur_arg = 1;
8855
8856 while(*args[cur_arg]) {
8857 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8858 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8859 cur_arg+=2;
8860 continue;
8861 } else
8862 break;
8863 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8864 } else if (!strcmp(args[0], "set-nice")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8865 rule->action = ACT_HTTP_SET_NICE;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8866 cur_arg = 1;
8867
8868 if (!*args[cur_arg] ||
8869 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8870 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
8871 file, linenum, args[0]);
8872 goto out_err;
8873 }
8874 rule->arg.nice = atoi(args[cur_arg]);
8875 if (rule->arg.nice < -1024)
8876 rule->arg.nice = -1024;
8877 else if (rule->arg.nice > 1024)
8878 rule->arg.nice = 1024;
8879 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8880 } else if (!strcmp(args[0], "set-tos")) {
8881#ifdef IP_TOS
8882 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8883 rule->action = ACT_HTTP_SET_TOS;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8884 cur_arg = 1;
8885
8886 if (!*args[cur_arg] ||
8887 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8888 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8889 file, linenum, args[0]);
8890 goto out_err;
8891 }
8892
8893 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8894 if (err && *err != '\0') {
8895 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8896 file, linenum, err, args[0]);
8897 goto out_err;
8898 }
8899 cur_arg++;
8900#else
8901 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8902 goto out_err;
8903#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8904 } else if (!strcmp(args[0], "set-mark")) {
8905#ifdef SO_MARK
8906 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8907 rule->action = ACT_HTTP_SET_MARK;
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8908 cur_arg = 1;
8909
8910 if (!*args[cur_arg] ||
8911 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8912 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8913 file, linenum, args[0]);
8914 goto out_err;
8915 }
8916
8917 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8918 if (err && *err != '\0') {
8919 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8920 file, linenum, err, args[0]);
8921 goto out_err;
8922 }
8923 cur_arg++;
8924 global.last_checks |= LSTCHK_NETADM;
8925#else
8926 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8927 goto out_err;
8928#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8929 } else if (!strcmp(args[0], "set-log-level")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8930 rule->action = ACT_HTTP_SET_LOGL;
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8931 cur_arg = 1;
8932
8933 if (!*args[cur_arg] ||
8934 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8935 bad_log_level:
8936 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
8937 file, linenum, args[0]);
8938 goto out_err;
8939 }
8940 if (strcmp(args[cur_arg], "silent") == 0)
8941 rule->arg.loglevel = -1;
8942 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
8943 goto bad_log_level;
8944 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8945 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8946 rule->action = *args[0] == 'a' ? ACT_HTTP_ADD_HDR : ACT_HTTP_SET_HDR;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8947 cur_arg = 1;
8948
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]8949 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8950 (*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]8951 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8952 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8953 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8954 }
8955
8956 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8957 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8958 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]8959
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8960 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]8961 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]8962 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
8963 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]8964 free(proxy->conf.lfs_file);
8965 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8966 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8967 cur_arg += 2;
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]8968 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8969 rule->action = args[0][8] == 'h' ? ACT_HTTP_REPLACE_HDR : ACT_HTTP_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8970 cur_arg = 1;
8971
8972 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann92df3702014-06-24 11:10:00 +0200[diff] [blame]8973 (*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]8974 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
8975 file, linenum, args[0]);
8976 goto out_err;
8977 }
8978
8979 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8980 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8981 LIST_INIT(&rule->arg.hdr_add.fmt);
8982
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8983 error = NULL;
8984 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
8985 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
8986 args[cur_arg + 1], error);
8987 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8988 goto out_err;
8989 }
8990
8991 proxy->conf.args.ctx = ARGC_HRQ;
8992 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
8993 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
8994 file, linenum);
8995
8996 free(proxy->conf.lfs_file);
8997 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8998 proxy->conf.lfs_line = proxy->conf.args.line;
8999 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9000 } else if (strcmp(args[0], "del-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9001 rule->action = ACT_HTTP_DEL_HDR;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9002 cur_arg = 1;
9003
9004 if (!*args[cur_arg] ||
9005 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9006 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9007 file, linenum, args[0]);
9008 goto out_err;
9009 }
9010
9011 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9012 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9013
9014 proxy->conf.args.ctx = ARGC_HRQ;
9015 free(proxy->conf.lfs_file);
9016 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9017 proxy->conf.lfs_line = proxy->conf.args.line;
9018 cur_arg += 1;
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9019 } else if (strncmp(args[0], "track-sc", 8) == 0 &&
9020 args[0][9] == '\0' && args[0][8] >= '0' &&
Willy Tarreaue1cfc1f2014-10-17 11:53:05 +0200[diff] [blame]9021 args[0][8] < '0' + MAX_SESS_STKCTR) { /* track-sc 0..9 */
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9022 struct sample_expr *expr;
9023 unsigned int where;
9024 char *err = NULL;
9025
9026 cur_arg = 1;
9027 proxy->conf.args.ctx = ARGC_TRK;
9028
9029 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9030 if (!expr) {
9031 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9032 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9033 free(err);
9034 goto out_err;
9035 }
9036
9037 where = 0;
9038 if (proxy->cap & PR_CAP_FE)
9039 where |= SMP_VAL_FE_HRQ_HDR;
9040 if (proxy->cap & PR_CAP_BE)
9041 where |= SMP_VAL_BE_HRQ_HDR;
9042
9043 if (!(expr->fetch->val & where)) {
9044 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule :"
9045 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9046 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9047 args[cur_arg-1], sample_src_names(expr->fetch->use));
9048 free(expr);
9049 goto out_err;
9050 }
9051
9052 if (strcmp(args[cur_arg], "table") == 0) {
9053 cur_arg++;
9054 if (!args[cur_arg]) {
9055 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing table name.\n",
9056 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9057 free(expr);
9058 goto out_err;
9059 }
9060 /* we copy the table name for now, it will be resolved later */
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]9061 rule->arg.trk_ctr.table.n = strdup(args[cur_arg]);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9062 cur_arg++;
9063 }
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]9064 rule->arg.trk_ctr.expr = expr;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9065 rule->action = ACT_ACTION_TRK_SC0 + args[0][8] - '0';
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9066 } else if (strcmp(args[0], "redirect") == 0) {
9067 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]9068 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9069
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9070 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]9071 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9072 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9073 goto out_err;
9074 }
9075
9076 /* this redirect rule might already contain a parsed condition which
9077 * we'll pass to the http-request rule.
9078 */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9079 rule->action = ACT_HTTP_REDIR;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9080 rule->arg.redir = redir;
9081 rule->cond = redir->cond;
9082 redir->cond = NULL;
9083 cur_arg = 2;
9084 return rule;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9085 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9086 /* http-request add-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9087 rule->action = ACT_HTTP_ADD_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9088 /*
9089 * '+ 8' for 'add-acl('
9090 * '- 9' for 'add-acl(' + trailing ')'
9091 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9092 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9093
9094 cur_arg = 1;
9095
9096 if (!*args[cur_arg] ||
9097 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9098 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9099 file, linenum, args[0]);
9100 goto out_err;
9101 }
9102
9103 LIST_INIT(&rule->arg.map.key);
9104 proxy->conf.args.ctx = ARGC_HRQ;
9105 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9106 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9107 file, linenum);
9108 free(proxy->conf.lfs_file);
9109 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9110 proxy->conf.lfs_line = proxy->conf.args.line;
9111 cur_arg += 1;
9112 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9113 /* http-request del-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9114 rule->action = ACT_HTTP_DEL_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9115 /*
9116 * '+ 8' for 'del-acl('
9117 * '- 9' for 'del-acl(' + trailing ')'
9118 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9119 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9120
9121 cur_arg = 1;
9122
9123 if (!*args[cur_arg] ||
9124 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9125 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9126 file, linenum, args[0]);
9127 goto out_err;
9128 }
9129
9130 LIST_INIT(&rule->arg.map.key);
9131 proxy->conf.args.ctx = ARGC_HRQ;
9132 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9133 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9134 file, linenum);
9135 free(proxy->conf.lfs_file);
9136 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9137 proxy->conf.lfs_line = proxy->conf.args.line;
9138 cur_arg += 1;
9139 } else if (strncmp(args[0], "del-map", 7) == 0) {
9140 /* http-request del-map(<reference (map name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9141 rule->action = ACT_HTTP_DEL_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9142 /*
9143 * '+ 8' for 'del-map('
9144 * '- 9' for 'del-map(' + trailing ')'
9145 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9146 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9147
9148 cur_arg = 1;
9149
9150 if (!*args[cur_arg] ||
9151 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9152 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9153 file, linenum, args[0]);
9154 goto out_err;
9155 }
9156
9157 LIST_INIT(&rule->arg.map.key);
9158 proxy->conf.args.ctx = ARGC_HRQ;
9159 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9160 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9161 file, linenum);
9162 free(proxy->conf.lfs_file);
9163 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9164 proxy->conf.lfs_line = proxy->conf.args.line;
9165 cur_arg += 1;
9166 } else if (strncmp(args[0], "set-map", 7) == 0) {
9167 /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9168 rule->action = ACT_HTTP_SET_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9169 /*
9170 * '+ 8' for 'set-map('
9171 * '- 9' for 'set-map(' + trailing ')'
9172 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9173 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9174
9175 cur_arg = 1;
9176
9177 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9178 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9179 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9180 file, linenum, args[0]);
9181 goto out_err;
9182 }
9183
9184 LIST_INIT(&rule->arg.map.key);
9185 LIST_INIT(&rule->arg.map.value);
9186 proxy->conf.args.ctx = ARGC_HRQ;
9187
9188 /* key pattern */
9189 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9190 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9191 file, linenum);
9192
9193 /* value pattern */
9194 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9195 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9196 file, linenum);
9197 free(proxy->conf.lfs_file);
9198 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9199 proxy->conf.lfs_line = proxy->conf.args.line;
9200
9201 cur_arg += 2;
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]9202 } else if (strncmp(args[0], "set-src", 7) == 0) {
9203 struct sample_expr *expr;
9204 unsigned int where;
9205 char *err = NULL;
9206
9207 cur_arg = 1;
9208 proxy->conf.args.ctx = ARGC_HRQ;
9209
9210 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9211 if (!expr) {
9212 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9213 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9214 free(err);
9215 goto out_err;
9216 }
9217
9218 where = 0;
9219 if (proxy->cap & PR_CAP_FE)
9220 where |= SMP_VAL_FE_HRQ_HDR;
9221 if (proxy->cap & PR_CAP_BE)
9222 where |= SMP_VAL_BE_HRQ_HDR;
9223
9224 if (!(expr->fetch->val & where)) {
9225 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule :"
9226 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9227 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9228 args[cur_arg-1], sample_src_names(expr->fetch->use));
9229 free(expr);
9230 goto out_err;
9231 }
9232
Thierry FOURNIERa002dc92015-07-31 08:50:51 +0200[diff] [blame]9233 rule->arg.expr = expr;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9234 rule->action = ACT_HTTP_REQ_SET_SRC;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9235 } else if (((custom = action_http_req_custom(args[0])) != NULL)) {
9236 char *errmsg = NULL;
9237 cur_arg = 1;
9238 /* try in the module list */
Thierry FOURNIER5563e4b2015-08-14 19:20:07 +0200[diff] [blame]9239 rule->from = ACT_F_HTTP_REQ;
Thierry FOURNIER85c6c972015-09-22 19:14:35 +0200[diff] [blame]9240 rule->kw = custom;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]9241 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) == ACT_RET_PRS_ERR) {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9242 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9243 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9244 free(errmsg);
9245 goto out_err;
9246 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9247 } else {
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9248 action_build_list(&http_req_keywords.list, &trash);
9249 Alert("parsing [%s:%d]: 'http-request' expects 'allow', 'deny', 'auth', 'redirect', "
9250 "'tarpit', 'add-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', "
9251 "'set-tos', 'set-mark', 'set-log-level', 'add-acl', 'del-acl', 'del-map', 'set-map', "
9252 "'set-src'%s%s, but got '%s'%s.\n",
9253 file, linenum, *trash.str ? ", " : "", trash.str, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9254 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9255 }
9256
9257 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9258 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9259 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9260
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9261 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9262 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
9263 file, linenum, args[0], errmsg);
9264 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9265 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9266 }
9267 rule->cond = cond;
9268 }
9269 else if (*args[cur_arg]) {
9270 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
9271 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9272 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9273 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9274 }
9275
9276 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9277 out_err:
9278 free(rule);
9279 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9280}
9281
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9282/* parse an "http-respose" rule */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9283struct 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]9284{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9285 struct act_rule *rule;
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]9286 struct action_kw *custom = NULL;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9287 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9288 char *error;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9289
9290 rule = calloc(1, sizeof(*rule));
9291 if (!rule) {
9292 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
9293 goto out_err;
9294 }
9295
9296 if (!strcmp(args[0], "allow")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9297 rule->action = ACT_ACTION_ALLOW;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9298 cur_arg = 1;
9299 } else if (!strcmp(args[0], "deny")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9300 rule->action = ACT_ACTION_DENY;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9301 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9302 } else if (!strcmp(args[0], "set-nice")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9303 rule->action = ACT_HTTP_SET_NICE;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9304 cur_arg = 1;
9305
9306 if (!*args[cur_arg] ||
9307 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9308 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
9309 file, linenum, args[0]);
9310 goto out_err;
9311 }
9312 rule->arg.nice = atoi(args[cur_arg]);
9313 if (rule->arg.nice < -1024)
9314 rule->arg.nice = -1024;
9315 else if (rule->arg.nice > 1024)
9316 rule->arg.nice = 1024;
9317 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9318 } else if (!strcmp(args[0], "set-tos")) {
9319#ifdef IP_TOS
9320 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9321 rule->action = ACT_HTTP_SET_TOS;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9322 cur_arg = 1;
9323
9324 if (!*args[cur_arg] ||
9325 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9326 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9327 file, linenum, args[0]);
9328 goto out_err;
9329 }
9330
9331 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9332 if (err && *err != '\0') {
9333 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9334 file, linenum, err, args[0]);
9335 goto out_err;
9336 }
9337 cur_arg++;
9338#else
9339 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9340 goto out_err;
9341#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9342 } else if (!strcmp(args[0], "set-mark")) {
9343#ifdef SO_MARK
9344 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9345 rule->action = ACT_HTTP_SET_MARK;
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9346 cur_arg = 1;
9347
9348 if (!*args[cur_arg] ||
9349 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9350 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9351 file, linenum, args[0]);
9352 goto out_err;
9353 }
9354
9355 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9356 if (err && *err != '\0') {
9357 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9358 file, linenum, err, args[0]);
9359 goto out_err;
9360 }
9361 cur_arg++;
9362 global.last_checks |= LSTCHK_NETADM;
9363#else
9364 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9365 goto out_err;
9366#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9367 } else if (!strcmp(args[0], "set-log-level")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9368 rule->action = ACT_HTTP_SET_LOGL;
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9369 cur_arg = 1;
9370
9371 if (!*args[cur_arg] ||
9372 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9373 bad_log_level:
9374 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
9375 file, linenum, args[0]);
9376 goto out_err;
9377 }
9378 if (strcmp(args[cur_arg], "silent") == 0)
9379 rule->arg.loglevel = -1;
9380 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
9381 goto bad_log_level;
9382 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9383 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9384 rule->action = *args[0] == 'a' ? ACT_HTTP_ADD_HDR : ACT_HTTP_SET_HDR;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9385 cur_arg = 1;
9386
9387 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9388 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9389 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9390 file, linenum, args[0]);
9391 goto out_err;
9392 }
9393
9394 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9395 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9396 LIST_INIT(&rule->arg.hdr_add.fmt);
9397
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9398 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9399 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]9400 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9401 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9402 free(proxy->conf.lfs_file);
9403 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9404 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9405 cur_arg += 2;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9406 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9407 rule->action = args[0][8] == 'h' ? ACT_HTTP_REPLACE_HDR : ACT_HTTP_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9408 cur_arg = 1;
9409
9410 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann12cb00b2014-08-08 17:29:06 +0200[diff] [blame]9411 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
9412 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 3 arguments.\n",
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9413 file, linenum, args[0]);
9414 goto out_err;
9415 }
9416
9417 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9418 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9419 LIST_INIT(&rule->arg.hdr_add.fmt);
9420
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9421 error = NULL;
9422 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9423 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9424 args[cur_arg + 1], error);
9425 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9426 goto out_err;
9427 }
9428
9429 proxy->conf.args.ctx = ARGC_HRQ;
9430 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9431 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9432 file, linenum);
9433
9434 free(proxy->conf.lfs_file);
9435 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9436 proxy->conf.lfs_line = proxy->conf.args.line;
9437 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9438 } else if (strcmp(args[0], "del-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9439 rule->action = ACT_HTTP_DEL_HDR;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9440 cur_arg = 1;
9441
9442 if (!*args[cur_arg] ||
9443 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9444 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9445 file, linenum, args[0]);
9446 goto out_err;
9447 }
9448
9449 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9450 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9451
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9452 proxy->conf.args.ctx = ARGC_HRS;
9453 free(proxy->conf.lfs_file);
9454 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9455 proxy->conf.lfs_line = proxy->conf.args.line;
9456 cur_arg += 1;
9457 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9458 /* http-request add-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9459 rule->action = ACT_HTTP_ADD_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9460 /*
9461 * '+ 8' for 'add-acl('
9462 * '- 9' for 'add-acl(' + trailing ')'
9463 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9464 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9465
9466 cur_arg = 1;
9467
9468 if (!*args[cur_arg] ||
9469 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9470 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9471 file, linenum, args[0]);
9472 goto out_err;
9473 }
9474
9475 LIST_INIT(&rule->arg.map.key);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9476 proxy->conf.args.ctx = ARGC_HRS;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9477 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9478 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9479 file, linenum);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9480 free(proxy->conf.lfs_file);
9481 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9482 proxy->conf.lfs_line = proxy->conf.args.line;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9483
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9484 cur_arg += 1;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9485 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9486 /* http-response del-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9487 rule->action = ACT_HTTP_DEL_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9488 /*
9489 * '+ 8' for 'del-acl('
9490 * '- 9' for 'del-acl(' + trailing ')'
9491 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9492 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9493
9494 cur_arg = 1;
9495
9496 if (!*args[cur_arg] ||
9497 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9498 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9499 file, linenum, args[0]);
9500 goto out_err;
9501 }
9502
9503 LIST_INIT(&rule->arg.map.key);
9504 proxy->conf.args.ctx = ARGC_HRS;
9505 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9506 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9507 file, linenum);
9508 free(proxy->conf.lfs_file);
9509 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9510 proxy->conf.lfs_line = proxy->conf.args.line;
9511 cur_arg += 1;
9512 } else if (strncmp(args[0], "del-map", 7) == 0) {
9513 /* http-response del-map(<reference (map name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9514 rule->action = ACT_HTTP_DEL_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9515 /*
9516 * '+ 8' for 'del-map('
9517 * '- 9' for 'del-map(' + trailing ')'
9518 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9519 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9520
9521 cur_arg = 1;
9522
9523 if (!*args[cur_arg] ||
9524 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9525 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9526 file, linenum, args[0]);
9527 goto out_err;
9528 }
9529
9530 LIST_INIT(&rule->arg.map.key);
9531 proxy->conf.args.ctx = ARGC_HRS;
9532 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9533 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9534 file, linenum);
9535 free(proxy->conf.lfs_file);
9536 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9537 proxy->conf.lfs_line = proxy->conf.args.line;
9538 cur_arg += 1;
9539 } else if (strncmp(args[0], "set-map", 7) == 0) {
9540 /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9541 rule->action = ACT_HTTP_SET_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9542 /*
9543 * '+ 8' for 'set-map('
9544 * '- 9' for 'set-map(' + trailing ')'
9545 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9546 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9547
9548 cur_arg = 1;
9549
9550 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9551 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9552 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9553 file, linenum, args[0]);
9554 goto out_err;
9555 }
9556
9557 LIST_INIT(&rule->arg.map.key);
9558 LIST_INIT(&rule->arg.map.value);
9559
9560 proxy->conf.args.ctx = ARGC_HRS;
9561
9562 /* key pattern */
9563 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9564 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9565 file, linenum);
9566
9567 /* value pattern */
9568 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9569 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9570 file, linenum);
9571
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
9576 cur_arg += 2;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]9577 } else if (strcmp(args[0], "redirect") == 0) {
9578 struct redirect_rule *redir;
9579 char *errmsg = NULL;
9580
9581 if ((redir = http_parse_redirect_rule(file, linenum, proxy, (const char **)args + 1, &errmsg, 1, 1)) == NULL) {
9582 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9583 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9584 goto out_err;
9585 }
9586
9587 /* this redirect rule might already contain a parsed condition which
9588 * we'll pass to the http-request rule.
9589 */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9590 rule->action = ACT_HTTP_REDIR;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]9591 rule->arg.redir = redir;
9592 rule->cond = redir->cond;
9593 redir->cond = NULL;
9594 cur_arg = 2;
9595 return rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9596 } else if (((custom = action_http_res_custom(args[0])) != NULL)) {
9597 char *errmsg = NULL;
9598 cur_arg = 1;
9599 /* try in the module list */
Thierry FOURNIER5563e4b2015-08-14 19:20:07 +0200[diff] [blame]9600 rule->from = ACT_F_HTTP_RES;
Thierry FOURNIER85c6c972015-09-22 19:14:35 +0200[diff] [blame]9601 rule->kw = custom;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]9602 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) == ACT_RET_PRS_ERR) {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9603 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9604 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9605 free(errmsg);
9606 goto out_err;
9607 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9608 } else {
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9609 action_build_list(&http_res_keywords.list, &trash);
9610 Alert("parsing [%s:%d]: 'http-response' expects 'allow', 'deny', 'redirect', "
9611 "'add-header', 'del-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', "
9612 "'set-tos', 'set-mark', 'set-log-level', 'add-acl', 'del-acl', 'del-map', 'set-map', "
9613 "'set-src'%s%s, but got '%s'%s.\n",
9614 file, linenum, *trash.str ? ", " : "", trash.str, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9615 goto out_err;
9616 }
9617
9618 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9619 struct acl_cond *cond;
9620 char *errmsg = NULL;
9621
9622 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9623 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
9624 file, linenum, args[0], errmsg);
9625 free(errmsg);
9626 goto out_err;
9627 }
9628 rule->cond = cond;
9629 }
9630 else if (*args[cur_arg]) {
9631 Alert("parsing [%s:%d]: 'http-response %s' expects"
9632 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9633 file, linenum, args[0], args[cur_arg]);
9634 goto out_err;
9635 }
9636
9637 return rule;
9638 out_err:
9639 free(rule);
9640 return NULL;
9641}
9642
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9643/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9644 * 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]9645 * dynamic log-format rule instead of a static string. Parameter <dir> indicates
9646 * the direction of the rule, and equals 0 for request, non-zero for responses.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9647 */
9648struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9649 const char **args, char **errmsg, int use_fmt, int dir)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9650{
9651 struct redirect_rule *rule;
9652 int cur_arg;
9653 int type = REDIRECT_TYPE_NONE;
9654 int code = 302;
9655 const char *destination = NULL;
9656 const char *cookie = NULL;
9657 int cookie_set = 0;
9658 unsigned int flags = REDIRECT_FLAG_NONE;
9659 struct acl_cond *cond = NULL;
9660
9661 cur_arg = 0;
9662 while (*(args[cur_arg])) {
9663 if (strcmp(args[cur_arg], "location") == 0) {
9664 if (!*args[cur_arg + 1])
9665 goto missing_arg;
9666
9667 type = REDIRECT_TYPE_LOCATION;
9668 cur_arg++;
9669 destination = args[cur_arg];
9670 }
9671 else if (strcmp(args[cur_arg], "prefix") == 0) {
9672 if (!*args[cur_arg + 1])
9673 goto missing_arg;
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9674 type = REDIRECT_TYPE_PREFIX;
9675 cur_arg++;
9676 destination = args[cur_arg];
9677 }
9678 else if (strcmp(args[cur_arg], "scheme") == 0) {
9679 if (!*args[cur_arg + 1])
9680 goto missing_arg;
9681
9682 type = REDIRECT_TYPE_SCHEME;
9683 cur_arg++;
9684 destination = args[cur_arg];
9685 }
9686 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
9687 if (!*args[cur_arg + 1])
9688 goto missing_arg;
9689
9690 cur_arg++;
9691 cookie = args[cur_arg];
9692 cookie_set = 1;
9693 }
9694 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
9695 if (!*args[cur_arg + 1])
9696 goto missing_arg;
9697
9698 cur_arg++;
9699 cookie = args[cur_arg];
9700 cookie_set = 0;
9701 }
9702 else if (strcmp(args[cur_arg], "code") == 0) {
9703 if (!*args[cur_arg + 1])
9704 goto missing_arg;
9705
9706 cur_arg++;
9707 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9708 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9709 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9710 "'%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]9711 args[cur_arg - 1], args[cur_arg]);
9712 return NULL;
9713 }
9714 }
9715 else if (!strcmp(args[cur_arg],"drop-query")) {
9716 flags |= REDIRECT_FLAG_DROP_QS;
9717 }
9718 else if (!strcmp(args[cur_arg],"append-slash")) {
9719 flags |= REDIRECT_FLAG_APPEND_SLASH;
9720 }
9721 else if (strcmp(args[cur_arg], "if") == 0 ||
9722 strcmp(args[cur_arg], "unless") == 0) {
9723 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
9724 if (!cond) {
9725 memprintf(errmsg, "error in condition: %s", *errmsg);
9726 return NULL;
9727 }
9728 break;
9729 }
9730 else {
9731 memprintf(errmsg,
9732 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
9733 args[cur_arg]);
9734 return NULL;
9735 }
9736 cur_arg++;
9737 }
9738
9739 if (type == REDIRECT_TYPE_NONE) {
9740 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
9741 return NULL;
9742 }
9743
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9744 if (dir && type != REDIRECT_TYPE_LOCATION) {
9745 memprintf(errmsg, "response only supports redirect type 'location'");
9746 return NULL;
9747 }
9748
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]9749 rule = calloc(1, sizeof(*rule));
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9750 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]9751 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9752
9753 if (!use_fmt) {
9754 /* old-style static redirect rule */
9755 rule->rdr_str = strdup(destination);
9756 rule->rdr_len = strlen(destination);
9757 }
9758 else {
9759 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9760
9761 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
9762 * if prefix == "/", we don't want to add anything, otherwise it
9763 * makes it hard for the user to configure a self-redirection.
9764 */
Godbachd9722032014-12-18 15:44:58 +0800[diff] [blame]9765 curproxy->conf.args.ctx = ARGC_RDR;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9766 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9767 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9768 dir ? (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRS_HDR : SMP_VAL_BE_HRS_HDR
9769 : (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]9770 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9771 free(curproxy->conf.lfs_file);
9772 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
9773 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9774 }
9775 }
9776
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9777 if (cookie) {
9778 /* depending on cookie_set, either we want to set the cookie, or to clear it.
9779 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
9780 */
9781 rule->cookie_len = strlen(cookie);
9782 if (cookie_set) {
9783 rule->cookie_str = malloc(rule->cookie_len + 10);
9784 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9785 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
9786 rule->cookie_len += 9;
9787 } else {
9788 rule->cookie_str = malloc(rule->cookie_len + 21);
9789 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9790 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
9791 rule->cookie_len += 20;
9792 }
9793 }
9794 rule->type = type;
9795 rule->code = code;
9796 rule->flags = flags;
9797 LIST_INIT(&rule->list);
9798 return rule;
9799
9800 missing_arg:
9801 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
9802 return NULL;
9803}
9804
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9805/************************************************************************/
9806/* The code below is dedicated to ACL parsing and matching */
9807/************************************************************************/
9808
9809
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9810/* This function ensures that the prerequisites for an L7 fetch are ready,
9811 * which means that a request or response is ready. If some data is missing,
9812 * 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]9813 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
9814 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9815 *
9816 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9817 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
9818 * decide whether or not an HTTP message is present ;
9819 * 0 if the requested data cannot be fetched or if it is certain that
9820 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9821 * 1 if an HTTP message is ready
9822 */
James Rosewell91a41cb2015-09-18 17:11:16 +0100[diff] [blame]9823int smp_prefetch_http(struct proxy *px, struct stream *s, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9824 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9825{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9826 struct http_txn *txn;
9827 struct http_msg *msg;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9828
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]9829 /* Note: it is possible that <s> is NULL when called before stream
9830 * initialization (eg: tcp-request connection), so this function is the
9831 * one responsible for guarding against this case for all HTTP users.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9832 */
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9833 if (!s)
9834 return 0;
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]9835
Thierry FOURNIERed08d6a2015-09-24 08:40:18 +0200[diff] [blame]9836 if (!s->txn) {
9837 if (unlikely(!http_alloc_txn(s)))
9838 return 0; /* not enough memory */
9839 http_init_txn(s);
9840 }
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9841 txn = s->txn;
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9842 msg = &txn->req;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9843
9844 /* Check for a dependency on a request */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9845 smp->data.type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9846
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9847 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9848 /* If the buffer does not leave enough free space at the end,
9849 * we must first realign it.
9850 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9851 if (s->req.buf->p > s->req.buf->data &&
9852 s->req.buf->i + s->req.buf->p > s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)
9853 buffer_slow_realign(s->req.buf);
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9854
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9855 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]9856 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9857 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9858
9859 /* Try to decode HTTP request */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9860 if (likely(msg->next < s->req.buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9861 http_msg_analyzer(msg, &txn->hdr_idx);
9862
9863 /* Still no valid request ? */
9864 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]9865 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9866 buffer_full(s->req.buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9867 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9868 }
9869 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9870 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9871 return 0;
9872 }
9873
9874 /* OK we just got a valid HTTP request. We have some minor
9875 * preparation to perform so that further checks can rely
9876 * on HTTP tests.
9877 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9878
9879 /* If the request was parsed but was too large, we must absolutely
9880 * return an error so that it is not processed. At the moment this
9881 * cannot happen, but if the parsers are to change in the future,
9882 * we want this check to be maintained.
9883 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9884 if (unlikely(s->req.buf->i + s->req.buf->p >
9885 s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9886 msg->msg_state = HTTP_MSG_ERROR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9887 smp->data.u.sint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9888 return 1;
9889 }
9890
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9891 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9892 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]9893 s->flags |= SF_REDIRECTABLE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9894
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9895 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
9896 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9897 }
9898
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9899 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9900 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9901 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9902
9903 /* otherwise everything's ready for the request */
9904 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9905 else {
9906 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9907 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
9908 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9909 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9910 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9911 }
9912
9913 /* everything's OK */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9914 smp->data.u.sint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9915 return 1;
9916}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9917
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9918/* 1. Check on METHOD
9919 * We use the pre-parsed method if it is known, and store its number as an
9920 * integer. If it is unknown, we use the pointer and the length.
9921 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]9922static int pat_parse_meth(const char *text, struct pattern *pattern, int mflags, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9923{
9924 int len, meth;
9925
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]9926 len = strlen(text);
9927 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9928
9929 pattern->val.i = meth;
9930 if (meth == HTTP_METH_OTHER) {
Willy Tarreau912c1192014-08-29 15:15:50 +0200[diff] [blame]9931 pattern->ptr.str = (char *)text;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9932 pattern->len = len;
9933 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9934 else {
9935 pattern->ptr.str = NULL;
9936 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9937 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9938 return 1;
9939}
9940
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9941/* This function fetches the method of current HTTP request and stores
9942 * it in the global pattern struct as a chunk. There are two possibilities :
9943 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
9944 * in <len> and <ptr> is NULL ;
9945 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
9946 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9947 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9948 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9949static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9950smp_fetch_meth(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9951{
9952 int meth;
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]9953 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9954
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9955 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9956
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]9957 txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9958 meth = txn->meth;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9959 smp->data.type = SMP_T_METH;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9960 smp->data.u.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9961 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9962 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
9963 /* ensure the indexes are not affected */
9964 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9965 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9966 smp->data.u.meth.str.len = txn->req.sl.rq.m_l;
9967 smp->data.u.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9968 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9969 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9970 return 1;
9971}
9972
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9973/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9974static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9975{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9976 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9977 struct pattern_list *lst;
9978 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9979
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9980 list_for_each_entry(lst, &expr->patterns, list) {
9981 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9982
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9983 /* well-known method */
9984 if (pattern->val.i != HTTP_METH_OTHER) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9985 if (smp->data.u.meth.meth == pattern->val.i)
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9986 return pattern;
9987 else
9988 continue;
9989 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9990
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9991 /* Other method, we must compare the strings */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9992 if (pattern->len != smp->data.u.meth.str.len)
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9993 continue;
9994
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]9995 icase = expr->mflags & PAT_MF_IGNORE_CASE;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9996 if ((icase && strncasecmp(pattern->ptr.str, smp->data.u.meth.str.str, smp->data.u.meth.str.len) == 0) ||
9997 (!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]9998 return pattern;
9999 }
10000 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10001}
10002
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10003static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10004smp_fetch_rqver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10005{
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10006 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10007 char *ptr;
10008 int len;
10009
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10010 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10011
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10012 txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10013 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10014 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10015
10016 while ((len-- > 0) && (*ptr++ != '/'));
10017 if (len <= 0)
10018 return 0;
10019
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10020 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10021 smp->data.u.str.str = ptr;
10022 smp->data.u.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10023
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10024 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10025 return 1;
10026}
10027
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10028static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10029smp_fetch_stver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10030{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10031 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10032 char *ptr;
10033 int len;
10034
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10035 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10036
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10037 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10038 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10039 return 0;
10040
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10041 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10042 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10043
10044 while ((len-- > 0) && (*ptr++ != '/'));
10045 if (len <= 0)
10046 return 0;
10047
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10048 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10049 smp->data.u.str.str = ptr;
10050 smp->data.u.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10051
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10052 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10053 return 1;
10054}
10055
10056/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10057static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10058smp_fetch_stcode(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10059{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10060 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10061 char *ptr;
10062 int len;
10063
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10064 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10065
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10066 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10067 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10068 return 0;
10069
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10070 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10071 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10072
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10073 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10074 smp->data.u.sint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10075 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10076 return 1;
10077}
10078
Thierry Fournierf4011dd2016-03-29 17:23:51 +0200[diff] [blame]10079static int
10080smp_fetch_uniqueid(const struct arg *args, struct sample *smp, const char *kw, void *private)
10081{
10082 if (LIST_ISEMPTY(&smp->sess->fe->format_unique_id))
10083 return 0;
10084
10085 if (!smp->strm->unique_id) {
10086 if ((smp->strm->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
10087 return 0;
10088 smp->strm->unique_id[0] = '\0';
10089 }
10090 smp->data.u.str.len = build_logline(smp->strm, smp->strm->unique_id,
10091 UNIQUEID_LEN, &smp->sess->fe->format_unique_id);
10092
10093 smp->data.type = SMP_T_STR;
10094 smp->data.u.str.str = smp->strm->unique_id;
10095 smp->flags = SMP_F_CONST;
10096 return 1;
10097}
10098
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10099/* returns the longest available part of the body. This requires that the body
10100 * has been waited for using http-buffer-request.
10101 */
10102static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10103smp_fetch_body(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10104{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10105 struct http_msg *msg;
10106 unsigned long len;
10107 unsigned long block1;
10108 char *body;
10109 struct chunk *temp;
10110
10111 CHECK_HTTP_MESSAGE_FIRST();
10112
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10113 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10114 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10115 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10116 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10117
10118 len = http_body_bytes(msg);
10119 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
10120
10121 block1 = len;
10122 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
10123 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
10124
10125 if (block1 == len) {
10126 /* buffer is not wrapped (or empty) */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10127 smp->data.type = SMP_T_BIN;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10128 smp->data.u.str.str = body;
10129 smp->data.u.str.len = len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10130 smp->flags = SMP_F_VOL_TEST | SMP_F_CONST;
10131 }
10132 else {
10133 /* buffer is wrapped, we need to defragment it */
10134 temp = get_trash_chunk();
10135 memcpy(temp->str, body, block1);
10136 memcpy(temp->str + block1, msg->chn->buf->data, len - block1);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10137 smp->data.type = SMP_T_BIN;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10138 smp->data.u.str.str = temp->str;
10139 smp->data.u.str.len = len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10140 smp->flags = SMP_F_VOL_TEST;
10141 }
10142 return 1;
10143}
10144
10145
10146/* returns the available length of the body. This requires that the body
10147 * has been waited for using http-buffer-request.
10148 */
10149static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10150smp_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]10151{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10152 struct http_msg *msg;
10153
10154 CHECK_HTTP_MESSAGE_FIRST();
10155
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10156 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10157 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10158 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10159 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10160
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10161 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10162 smp->data.u.sint = http_body_bytes(msg);
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10163
10164 smp->flags = SMP_F_VOL_TEST;
10165 return 1;
10166}
10167
10168
10169/* returns the advertised length of the body, or the advertised size of the
10170 * chunks available in the buffer. This requires that the body has been waited
10171 * for using http-buffer-request.
10172 */
10173static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10174smp_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]10175{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10176 struct http_msg *msg;
10177
10178 CHECK_HTTP_MESSAGE_FIRST();
10179
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10180 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10181 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10182 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10183 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10184
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10185 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10186 smp->data.u.sint = msg->body_len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10187
10188 smp->flags = SMP_F_VOL_TEST;
10189 return 1;
10190}
10191
10192
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10193/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10194static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10195smp_fetch_url(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10196{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10197 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10198
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10199 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10200
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10201 txn = smp->strm->txn;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10202 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10203 smp->data.u.str.len = txn->req.sl.rq.u_l;
10204 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]10205 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10206 return 1;
10207}
10208
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10209static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10210smp_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]10211{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10212 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10213 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10214
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10215 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10216
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10217 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10218 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]10219 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]10220 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10221
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10222 smp->data.type = SMP_T_IPV4;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10223 smp->data.u.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10224 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10225 return 1;
10226}
10227
10228static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10229smp_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]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)
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_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10242 smp->data.u.sint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]10243 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10244 return 1;
10245}
10246
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10247/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10248 * Accepts an optional argument of type string containing the header field name,
10249 * and an optional argument of type signed or unsigned integer to request an
10250 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10251 * headers are considered from the first one. It does not stop on commas and
10252 * returns full lines instead (useful for User-Agent or Date for example).
10253 */
10254static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10255smp_fetch_fhdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10256{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10257 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10258 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10259 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10260 int occ = 0;
10261 const char *name_str = NULL;
10262 int name_len = 0;
10263
10264 if (!ctx) {
10265 /* first call */
10266 ctx = &static_hdr_ctx;
10267 ctx->idx = 0;
10268 smp->ctx.a[0] = ctx;
10269 }
10270
10271 if (args) {
10272 if (args[0].type != ARGT_STR)
10273 return 0;
10274 name_str = args[0].data.str.str;
10275 name_len = args[0].data.str.len;
10276
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10277 if (args[1].type == ARGT_SINT)
10278 occ = args[1].data.sint;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10279 }
10280
10281 CHECK_HTTP_MESSAGE_FIRST();
10282
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10283 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10284 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]10285
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10286 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
10287 /* search for header from the beginning */
10288 ctx->idx = 0;
10289
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10290 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10291 /* no explicit occurrence and single fetch => last header by default */
10292 occ = -1;
10293
10294 if (!occ)
10295 /* prepare to report multiple occurrences for ACL fetches */
10296 smp->flags |= SMP_F_NOT_LAST;
10297
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10298 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10299 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10300 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]10301 return 1;
10302
10303 smp->flags &= ~SMP_F_NOT_LAST;
10304 return 0;
10305}
10306
10307/* 6. Check on HTTP header count. The number of occurrences is returned.
10308 * Accepts exactly 1 argument of type string. It does not stop on commas and
10309 * returns full lines instead (useful for User-Agent or Date for example).
10310 */
10311static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10312smp_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]10313{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10314 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10315 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10316 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10317 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10318 const char *name = NULL;
10319 int len = 0;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10320
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10321 if (args && args->type == ARGT_STR) {
10322 name = args->data.str.str;
10323 len = args->data.str.len;
10324 }
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10325
10326 CHECK_HTTP_MESSAGE_FIRST();
10327
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10328 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10329 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]10330
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10331 ctx.idx = 0;
10332 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10333 while (http_find_full_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10334 cnt++;
10335
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10336 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10337 smp->data.u.sint = cnt;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10338 smp->flags = SMP_F_VOL_HDR;
10339 return 1;
10340}
10341
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10342static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10343smp_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]10344{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10345 struct hdr_idx *idx;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10346 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10347 const struct http_msg *msg;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10348 struct chunk *temp;
10349 char del = ',';
10350
10351 if (args && args->type == ARGT_STR)
10352 del = *args[0].data.str.str;
10353
10354 CHECK_HTTP_MESSAGE_FIRST();
10355
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10356 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10357 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]10358
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10359 temp = get_trash_chunk();
10360
10361 ctx.idx = 0;
10362 while (http_find_next_header(msg->chn->buf->p, idx, &ctx)) {
10363 if (temp->len)
10364 temp->str[temp->len++] = del;
10365 memcpy(temp->str + temp->len, ctx.line, ctx.del);
10366 temp->len += ctx.del;
10367 }
10368
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10369 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10370 smp->data.u.str.str = temp->str;
10371 smp->data.u.str.len = temp->len;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10372 smp->flags = SMP_F_VOL_HDR;
10373 return 1;
10374}
10375
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10376/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10377 * Accepts an optional argument of type string containing the header field name,
10378 * and an optional argument of type signed or unsigned integer to request an
10379 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10380 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10381 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10382static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10383smp_fetch_hdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10384{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10385 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10386 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10387 const struct http_msg *msg;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10388 int occ = 0;
10389 const char *name_str = NULL;
10390 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10391
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10392 if (!ctx) {
10393 /* first call */
10394 ctx = &static_hdr_ctx;
10395 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]10396 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10397 }
10398
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10399 if (args) {
10400 if (args[0].type != ARGT_STR)
10401 return 0;
10402 name_str = args[0].data.str.str;
10403 name_len = args[0].data.str.len;
10404
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10405 if (args[1].type == ARGT_SINT)
10406 occ = args[1].data.sint;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10407 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10408
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10409 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10410
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10411 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10412 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]10413
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10414 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10415 /* search for header from the beginning */
10416 ctx->idx = 0;
10417
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10418 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10419 /* no explicit occurrence and single fetch => last header by default */
10420 occ = -1;
10421
10422 if (!occ)
10423 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10424 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]10425
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10426 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10427 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10428 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]10429 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10430
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10431 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10432 return 0;
10433}
10434
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10435/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10436 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10437 */
10438static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10439smp_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]10440{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10441 struct hdr_idx *idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10442 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10443 const struct http_msg *msg;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10444 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10445 const char *name = NULL;
10446 int len = 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10447
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10448 if (args && args->type == ARGT_STR) {
10449 name = args->data.str.str;
10450 len = args->data.str.len;
10451 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10452
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10453 CHECK_HTTP_MESSAGE_FIRST();
10454
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10455 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10456 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]10457
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10458 ctx.idx = 0;
10459 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10460 while (http_find_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10461 cnt++;
10462
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10463 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10464 smp->data.u.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10465 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10466 return 1;
10467}
10468
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10469/* Fetch an HTTP header's integer value. The integer value is returned. It
10470 * takes a mandatory argument of type string and an optional one of type int
10471 * to designate a specific occurrence. It returns an unsigned integer, which
10472 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10473 */
10474static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10475smp_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]10476{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10477 int ret = smp_fetch_hdr(args, smp, kw, private);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10478
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10479 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10480 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10481 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]10482 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10483
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10484 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10485}
10486
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10487/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
10488 * and an optional one of type int to designate a specific occurrence.
10489 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10490 */
10491static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10492smp_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]10493{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10494 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10495
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10496 while ((ret = smp_fetch_hdr(args, smp, kw, private)) > 0) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10497 if (url2ipv4((char *)smp->data.u.str.str, &smp->data.u.ipv4)) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10498 smp->data.type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10499 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10500 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10501 struct chunk *temp = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10502 if (smp->data.u.str.len < temp->size - 1) {
10503 memcpy(temp->str, smp->data.u.str.str, smp->data.u.str.len);
10504 temp->str[smp->data.u.str.len] = '\0';
10505 if (inet_pton(AF_INET6, temp->str, &smp->data.u.ipv6)) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10506 smp->data.type = SMP_T_IPV6;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10507 break;
10508 }
10509 }
10510 }
10511
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10512 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10513 if (!(smp->flags & SMP_F_NOT_LAST))
10514 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10515 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10516 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10517}
10518
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10519/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
10520 * the first '/' after the possible hostname, and ends before the possible '?'.
10521 */
10522static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10523smp_fetch_path(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10524{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10525 struct http_txn *txn;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10526 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10527
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10528 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10529
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10530 txn = smp->strm->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10531 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]10532 ptr = http_get_path(txn);
10533 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10534 return 0;
10535
10536 /* OK, we got the '/' ! */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10537 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10538 smp->data.u.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10539
10540 while (ptr < end && *ptr != '?')
10541 ptr++;
10542
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10543 smp->data.u.str.len = ptr - smp->data.u.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10544 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10545 return 1;
10546}
10547
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10548/* This produces a concatenation of the first occurrence of the Host header
10549 * followed by the path component if it begins with a slash ('/'). This means
10550 * that '*' will not be added, resulting in exactly the first Host entry.
10551 * If no Host header is found, then the path is returned as-is. The returned
10552 * 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]10553 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10554 */
10555static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10556smp_fetch_base(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10557{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10558 struct http_txn *txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10559 char *ptr, *end, *beg;
10560 struct hdr_ctx ctx;
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10561 struct chunk *temp;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10562
10563 CHECK_HTTP_MESSAGE_FIRST();
10564
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10565 txn = smp->strm->txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10566 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10567 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]10568 return smp_fetch_path(args, smp, kw, private);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10569
10570 /* 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]10571 temp = get_trash_chunk();
10572 memcpy(temp->str, ctx.line + ctx.val, ctx.vlen);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10573 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10574 smp->data.u.str.str = temp->str;
10575 smp->data.u.str.len = ctx.vlen;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10576
10577 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10578 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]10579 beg = http_get_path(txn);
10580 if (!beg)
10581 beg = end;
10582
10583 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10584
10585 if (beg < ptr && *beg == '/') {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10586 memcpy(smp->data.u.str.str + smp->data.u.str.len, beg, ptr - beg);
10587 smp->data.u.str.len += ptr - beg;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10588 }
10589
10590 smp->flags = SMP_F_VOL_1ST;
10591 return 1;
10592}
10593
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10594/* This produces a 32-bit hash of the concatenation of the first occurrence of
10595 * the Host header followed by the path component if it begins with a slash ('/').
10596 * This means that '*' will not be added, resulting in exactly the first Host
10597 * 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]10598 * is hashed using the path hash followed by a full avalanche hash and provides a
10599 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10600 * high-traffic sites without having to store whole paths.
10601 */
Thierry FOURNIER055b9d52014-07-15 16:11:07 +0200[diff] [blame]10602int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10603smp_fetch_base32(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10604{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10605 struct http_txn *txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10606 struct hdr_ctx ctx;
10607 unsigned int hash = 0;
10608 char *ptr, *beg, *end;
10609 int len;
10610
10611 CHECK_HTTP_MESSAGE_FIRST();
10612
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10613 txn = smp->strm->txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10614 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10615 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]10616 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10617 ptr = ctx.line + ctx.val;
10618 len = ctx.vlen;
10619 while (len--)
10620 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10621 }
10622
10623 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10624 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]10625 beg = http_get_path(txn);
10626 if (!beg)
10627 beg = end;
10628
10629 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10630
10631 if (beg < ptr && *beg == '/') {
10632 while (beg < ptr)
10633 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10634 }
10635 hash = full_hash(hash);
10636
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10637 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10638 smp->data.u.sint = hash;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10639 smp->flags = SMP_F_VOL_1ST;
10640 return 1;
10641}
10642
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10643/* 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]10644 * path as returned by smp_fetch_base32(). The idea is to have per-source and
10645 * per-path counters. The result is a binary block from 8 to 20 bytes depending
10646 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10647 * that in environments where IPv6 is insignificant, truncating the output to
10648 * 8 bytes would still work.
10649 */
10650static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10651smp_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]10652{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10653 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10654 struct connection *cli_conn = objt_conn(smp->sess->origin);
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10655
10656 if (!cli_conn)
10657 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10658
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10659 if (!smp_fetch_base32(args, smp, kw, private))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10660 return 0;
10661
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10662 temp = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10663 *(unsigned int *)temp->str = htonl(smp->data.u.sint);
Willy Tarreau5ad6e1d2014-07-15 21:34:06 +0200[diff] [blame]10664 temp->len += sizeof(unsigned int);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10665
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10666 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10667 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10668 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]10669 temp->len += 4;
10670 break;
10671 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10672 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]10673 temp->len += 16;
10674 break;
10675 default:
10676 return 0;
10677 }
10678
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10679 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10680 smp->data.type = SMP_T_BIN;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10681 return 1;
10682}
10683
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10684/* Extracts the query string, which comes after the question mark '?'. If no
10685 * question mark is found, nothing is returned. Otherwise it returns a sample
10686 * of type string carrying the whole query string.
10687 */
10688static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10689smp_fetch_query(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10690{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10691 struct http_txn *txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10692 char *ptr, *end;
10693
10694 CHECK_HTTP_MESSAGE_FIRST();
10695
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10696 txn = smp->strm->txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10697 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
10698 end = ptr + txn->req.sl.rq.u_l;
10699
10700 /* look up the '?' */
10701 do {
10702 if (ptr == end)
10703 return 0;
10704 } while (*ptr++ != '?');
10705
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10706 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10707 smp->data.u.str.str = ptr;
10708 smp->data.u.str.len = end - ptr;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10709 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
10710 return 1;
10711}
10712
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10713static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10714smp_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]10715{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10716 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
10717 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
10718 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10719
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10720 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10721
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10722 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10723 smp->data.u.sint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10724 return 1;
10725}
10726
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10727/* return a valid test if the current request is the first one on the connection */
10728static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10729smp_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]10730{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10731 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10732 smp->data.u.sint = !(smp->strm->txn->flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10733 return 1;
10734}
10735
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10736/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10737static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10738smp_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]10739{
10740
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10741 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10742 return 0;
10743
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10744 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10745
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10746 if (!get_http_auth(smp->strm))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10747 return 0;
10748
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10749 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10750 smp->data.u.sint = check_user(args->data.usr, smp->strm->txn->auth.user,
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10751 smp->strm->txn->auth.pass);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10752 return 1;
10753}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10754
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10755/* Accepts exactly 1 argument of type userlist */
10756static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10757smp_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]10758{
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10759 if (!args || args->type != ARGT_USR)
10760 return 0;
10761
10762 CHECK_HTTP_MESSAGE_FIRST();
10763
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10764 if (!get_http_auth(smp->strm))
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10765 return 0;
10766
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10767 /* if the user does not belong to the userlist or has a wrong password,
10768 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10769 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10770 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10771 if (!check_user(args->data.usr, smp->strm->txn->auth.user,
10772 smp->strm->txn->auth.pass))
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10773 return 0;
10774
10775 /* pat_match_auth() will need the user list */
10776 smp->ctx.a[0] = args->data.usr;
10777
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10778 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10779 smp->flags = SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10780 smp->data.u.str.str = smp->strm->txn->auth.user;
10781 smp->data.u.str.len = strlen(smp->strm->txn->auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10782
10783 return 1;
10784}
10785
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10786/* Try to find the next occurrence of a cookie name in a cookie header value.
10787 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
10788 * the cookie value is returned into *value and *value_l, and the function
10789 * returns a pointer to the next pointer to search from if the value was found.
10790 * Otherwise if the cookie was not found, NULL is returned and neither value
10791 * nor value_l are touched. The input <hdr> string should first point to the
10792 * header's value, and the <hdr_end> pointer must point to the first character
10793 * not part of the value. <list> must be non-zero if value may represent a list
10794 * of values (cookie headers). This makes it faster to abort parsing when no
10795 * list is expected.
10796 */
David Carlier4686f792015-09-25 14:10:50 +0100[diff] [blame]10797char *
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10798extract_cookie_value(char *hdr, const char *hdr_end,
10799 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]10800 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10801{
10802 char *equal, *att_end, *att_beg, *val_beg, *val_end;
10803 char *next;
10804
10805 /* we search at least a cookie name followed by an equal, and more
10806 * generally something like this :
10807 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
10808 */
10809 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
10810 /* Iterate through all cookies on this line */
10811
10812 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
10813 att_beg++;
10814
10815 /* find att_end : this is the first character after the last non
10816 * space before the equal. It may be equal to hdr_end.
10817 */
10818 equal = att_end = att_beg;
10819
10820 while (equal < hdr_end) {
10821 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
10822 break;
10823 if (http_is_spht[(unsigned char)*equal++])
10824 continue;
10825 att_end = equal;
10826 }
10827
10828 /* here, <equal> points to '=', a delimitor or the end. <att_end>
10829 * is between <att_beg> and <equal>, both may be identical.
10830 */
10831
10832 /* look for end of cookie if there is an equal sign */
10833 if (equal < hdr_end && *equal == '=') {
10834 /* look for the beginning of the value */
10835 val_beg = equal + 1;
10836 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
10837 val_beg++;
10838
10839 /* find the end of the value, respecting quotes */
10840 next = find_cookie_value_end(val_beg, hdr_end);
10841
10842 /* make val_end point to the first white space or delimitor after the value */
10843 val_end = next;
10844 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
10845 val_end--;
10846 } else {
10847 val_beg = val_end = next = equal;
10848 }
10849
10850 /* We have nothing to do with attributes beginning with '$'. However,
10851 * they will automatically be removed if a header before them is removed,
10852 * since they're supposed to be linked together.
10853 */
10854 if (*att_beg == '$')
10855 continue;
10856
10857 /* Ignore cookies with no equal sign */
10858 if (equal == next)
10859 continue;
10860
10861 /* Now we have the cookie name between att_beg and att_end, and
10862 * its value between val_beg and val_end.
10863 */
10864
10865 if (att_end - att_beg == cookie_name_l &&
10866 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
10867 /* let's return this value and indicate where to go on from */
10868 *value = val_beg;
10869 *value_l = val_end - val_beg;
10870 return next + 1;
10871 }
10872
10873 /* Set-Cookie headers only have the name in the first attr=value part */
10874 if (!list)
10875 break;
10876 }
10877
10878 return NULL;
10879}
10880
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10881/* Fetch a captured HTTP request header. The index is the position of
10882 * the "capture" option in the configuration file
10883 */
10884static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10885smp_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]10886{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10887 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10888 int idx;
10889
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10890 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10891 return 0;
10892
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10893 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10894
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10895 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]10896 return 0;
10897
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10898 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10899 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10900 smp->data.u.str.str = smp->strm->req_cap[idx];
10901 smp->data.u.str.len = strlen(smp->strm->req_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10902
10903 return 1;
10904}
10905
10906/* Fetch a captured HTTP response header. The index is the position of
10907 * the "capture" option in the configuration file
10908 */
10909static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10910smp_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]10911{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10912 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10913 int idx;
10914
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10915 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10916 return 0;
10917
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10918 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10919
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10920 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]10921 return 0;
10922
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10923 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10924 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10925 smp->data.u.str.str = smp->strm->res_cap[idx];
10926 smp->data.u.str.len = strlen(smp->strm->res_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10927
10928 return 1;
10929}
10930
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10931/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
10932static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10933smp_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]10934{
10935 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10936 struct http_txn *txn = smp->strm->txn;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10937 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10938
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10939 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10940 return 0;
10941
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10942 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10943
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10944 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10945 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10946
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10947 temp = get_trash_chunk();
10948 temp->str = txn->uri;
10949 temp->len = ptr - txn->uri;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10950 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10951 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10952 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10953
10954 return 1;
10955
10956}
10957
10958/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
10959static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10960smp_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]10961{
10962 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10963 struct http_txn *txn = smp->strm->txn;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10964 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10965
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10966 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10967 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10968
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10969 ptr = txn->uri;
10970
10971 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10972 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10973
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10974 if (!*ptr)
10975 return 0;
10976
10977 ptr++; /* skip the space */
10978
10979 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10980 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10981 if (!ptr)
10982 return 0;
10983 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
10984 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10985
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10986 smp->data.u.str = *temp;
10987 smp->data.u.str.len = ptr - temp->str;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10988 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10989 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10990
10991 return 1;
10992}
10993
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10994/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
10995 * as a string (either "HTTP/1.0" or "HTTP/1.1").
10996 */
10997static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10998smp_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]10999{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11000 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11001
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11002 if (!txn || txn->req.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11003 return 0;
11004
11005 if (txn->req.flags & HTTP_MSGF_VER_11)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11006 smp->data.u.str.str = "HTTP/1.1";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11007 else
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11008 smp->data.u.str.str = "HTTP/1.0";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11009
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11010 smp->data.u.str.len = 8;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11011 smp->data.type = SMP_T_STR;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11012 smp->flags = SMP_F_CONST;
11013 return 1;
11014
11015}
11016
11017/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
11018 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11019 */
11020static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11021smp_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]11022{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11023 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11024
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11025 if (!txn || txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11026 return 0;
11027
11028 if (txn->rsp.flags & HTTP_MSGF_VER_11)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11029 smp->data.u.str.str = "HTTP/1.1";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11030 else
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11031 smp->data.u.str.str = "HTTP/1.0";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11032
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11033 smp->data.u.str.len = 8;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11034 smp->data.type = SMP_T_STR;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11035 smp->flags = SMP_F_CONST;
11036 return 1;
11037
11038}
11039
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11040
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11041/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11042 * 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]11043 * 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]11044 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11045 * 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]11046 * Accepts exactly 1 argument of type string. If the input options indicate
11047 * that no iterating is desired, then only last value is fetched if any.
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]11048 * The returned sample is of type CSTR. Can be used to parse cookies in other
11049 * files.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11050 */
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11051int 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]11052{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11053 struct http_txn *txn;
11054 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11055 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11056 const struct http_msg *msg;
11057 const char *hdr_name;
11058 int hdr_name_len;
11059 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11060 int occ = 0;
11061 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11062
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11063 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11064 return 0;
11065
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11066 if (!ctx) {
11067 /* first call */
11068 ctx = &static_hdr_ctx;
11069 ctx->idx = 0;
11070 smp->ctx.a[2] = ctx;
11071 }
11072
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11073 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11074
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11075 txn = smp->strm->txn;
11076 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11077
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11078 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11079 msg = &txn->req;
11080 hdr_name = "Cookie";
11081 hdr_name_len = 6;
11082 } else {
11083 msg = &txn->rsp;
11084 hdr_name = "Set-Cookie";
11085 hdr_name_len = 10;
11086 }
11087
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11088 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11089 /* no explicit occurrence and single fetch => last cookie by default */
11090 occ = -1;
11091
11092 /* OK so basically here, either we want only one value and it's the
11093 * last one, or we want to iterate over all of them and we fetch the
11094 * next one.
11095 */
11096
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11097 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11098 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11099 /* search for the header from the beginning, we must first initialize
11100 * the search parameters.
11101 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11102 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11103 ctx->idx = 0;
11104 }
11105
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11106 smp->flags |= SMP_F_VOL_HDR;
11107
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11108 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11109 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
11110 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11111 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
11112 goto out;
11113
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11114 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11115 continue;
11116
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11117 smp->ctx.a[0] = ctx->line + ctx->val;
11118 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11119 }
11120
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11121 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11122 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11123 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]11124 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11125 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11126 &smp->data.u.str.str,
11127 &smp->data.u.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11128 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11129 found = 1;
11130 if (occ >= 0) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11131 /* one value was returned into smp->data.u.str.{str,len} */
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11132 smp->flags |= SMP_F_NOT_LAST;
11133 return 1;
11134 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11135 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11136 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11137 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11138 /* all cookie headers and values were scanned. If we're looking for the
11139 * last occurrence, we may return it now.
11140 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11141 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11142 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11143 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11144}
11145
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11146/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11147 * 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]11148 * multiple cookies may be parsed on the same line. The returned sample is of
11149 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11150 */
11151static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11152smp_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]11153{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11154 struct http_txn *txn;
11155 struct hdr_idx *idx;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11156 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11157 const struct http_msg *msg;
11158 const char *hdr_name;
11159 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11160 int cnt;
11161 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11162 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11163
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11164 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11165 return 0;
11166
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11167 CHECK_HTTP_MESSAGE_FIRST();
11168
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11169 txn = smp->strm->txn;
11170 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11171
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11172 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11173 msg = &txn->req;
11174 hdr_name = "Cookie";
11175 hdr_name_len = 6;
11176 } else {
11177 msg = &txn->rsp;
11178 hdr_name = "Set-Cookie";
11179 hdr_name_len = 10;
11180 }
11181
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11182 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]11183 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11184 ctx.idx = 0;
11185 cnt = 0;
11186
11187 while (1) {
11188 /* Note: val_beg == NULL every time we need to fetch a new header */
11189 if (!val_beg) {
11190 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
11191 break;
11192
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11193 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11194 continue;
11195
11196 val_beg = ctx.line + ctx.val;
11197 val_end = val_beg + ctx.vlen;
11198 }
11199
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11200 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11201 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11202 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11203 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11204 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11205 &smp->data.u.str.str,
11206 &smp->data.u.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11207 cnt++;
11208 }
11209 }
11210
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11211 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11212 smp->data.u.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11213 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11214 return 1;
11215}
11216
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11217/* Fetch an cookie's integer value. The integer value is returned. It
11218 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
11219 */
11220static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11221smp_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]11222{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11223 int ret = smp_fetch_cookie(args, smp, kw, private);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11224
11225 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11226 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11227 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]11228 }
11229
11230 return ret;
11231}
11232
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11233/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]11234/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11235/************************************************************************/
11236
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11237/*
11238 * Given a path string and its length, find the position of beginning of the
11239 * query string. Returns NULL if no query string is found in the path.
11240 *
11241 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
11242 *
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11243 * find_query_string(path, n, '?') points to "yo=mama;ye=daddy" string.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11244 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11245static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11246{
11247 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]11248
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11249 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11250 return p ? p + 1 : NULL;
11251}
11252
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11253static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11254{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11255 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11256}
11257
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11258/* after increasing a pointer value, it can exceed the first buffer
11259 * size. This function transform the value of <ptr> according with
11260 * the expected position. <chunks> is an array of the one or two
11261 * avalaible chunks. The first value is the start of the first chunk,
11262 * the second value if the end+1 of the first chunks. The third value
11263 * is NULL or the start of the second chunk and the fourth value is
11264 * the end+1 of the second chunk. The function returns 1 if does a
11265 * wrap, else returns 0.
11266 */
11267static inline int fix_pointer_if_wrap(const char **chunks, const char **ptr)
11268{
11269 if (*ptr < chunks[1])
11270 return 0;
11271 if (!chunks[2])
11272 return 0;
11273 *ptr = chunks[2] + ( *ptr - chunks[1] );
11274 return 1;
11275}
11276
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11277/*
11278 * Given a url parameter, find the starting position of the first occurence,
11279 * or NULL if the parameter is not found.
11280 *
11281 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
11282 * the function will return query_string+8.
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11283 *
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11284 * Warning: this function returns a pointer that can point to the first chunk
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11285 * or the second chunk. The caller must be check the position before using the
11286 * result.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11287 */
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11288static const char *
11289find_url_param_pos(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11290 const char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11291 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11292{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11293 const char *pos, *last, *equal;
11294 const char **bufs = chunks;
11295 int l1, l2;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11296
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11297
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11298 pos = bufs[0];
11299 last = bufs[1];
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11300 while (pos < last) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11301 /* Check the equal. */
11302 equal = pos + url_param_name_l;
11303 if (fix_pointer_if_wrap(chunks, &equal)) {
11304 if (equal >= chunks[3])
11305 return NULL;
11306 } else {
11307 if (equal >= chunks[1])
11308 return NULL;
11309 }
11310 if (*equal == '=') {
11311 if (pos + url_param_name_l > last) {
11312 /* process wrap case, we detect a wrap. In this case, the
11313 * comparison is performed in two parts.
11314 */
11315
11316 /* This is the end, we dont have any other chunk. */
11317 if (bufs != chunks || !bufs[2])
11318 return NULL;
11319
11320 /* Compute the length of each part of the comparison. */
11321 l1 = last - pos;
11322 l2 = url_param_name_l - l1;
11323
11324 /* The second buffer is too short to contain the compared string. */
11325 if (bufs[2] + l2 > bufs[3])
11326 return NULL;
11327
11328 if (memcmp(pos, url_param_name, l1) == 0 &&
11329 memcmp(bufs[2], url_param_name+l1, l2) == 0)
11330 return pos;
11331
11332 /* Perform wrapping and jump the string who fail the comparison. */
11333 bufs += 2;
11334 pos = bufs[0] + l2;
11335 last = bufs[1];
11336
11337 } else {
11338 /* process a simple comparison. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11339 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
11340 return pos;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11341 pos += url_param_name_l + 1;
11342 if (fix_pointer_if_wrap(chunks, &pos))
11343 last = bufs[2];
11344 }
11345 }
11346
11347 while (1) {
11348 /* Look for the next delimiter. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11349 while (pos < last && !is_param_delimiter(*pos, delim))
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11350 pos++;
11351 if (pos < last)
11352 break;
11353 /* process buffer wrapping. */
11354 if (bufs != chunks || !bufs[2])
11355 return NULL;
11356 bufs += 2;
11357 pos = bufs[0];
11358 last = bufs[1];
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11359 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11360 pos++;
11361 }
11362 return NULL;
11363}
11364
11365/*
Cyril Bontéce1ef4d2015-11-26 21:39:56 +0100[diff] [blame]11366 * Given a url parameter name and a query string, find the next value.
11367 * An empty url_param_name matches the first available parameter.
11368 * If the parameter is found, 1 is returned and *vstart / *vend are updated to
11369 * respectively provide a pointer to the value and its end.
11370 * Otherwise, 0 is returned and vstart/vend are not modified.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11371 */
11372static int
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11373find_next_url_param(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11374 const char* url_param_name, size_t url_param_name_l,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11375 const char **vstart, const char **vend, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11376{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11377 const char *arg_start, *qs_end;
11378 const char *value_start, *value_end;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11379
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11380 arg_start = chunks[0];
11381 qs_end = chunks[1];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11382 if (url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11383 /* Looks for an argument name. */
11384 arg_start = find_url_param_pos(chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11385 url_param_name, url_param_name_l,
11386 delim);
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11387 /* Check for wrapping. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11388 if (arg_start >= qs_end)
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11389 qs_end = chunks[3];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11390 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11391 if (!arg_start)
11392 return 0;
11393
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11394 if (!url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11395 while (1) {
11396 /* looks for the first argument. */
11397 value_start = memchr(arg_start, '=', qs_end - arg_start);
11398 if (!value_start) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11399 /* Check for wrapping. */
11400 if (arg_start >= chunks[0] &&
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11401 arg_start < chunks[1] &&
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11402 chunks[2]) {
11403 arg_start = chunks[2];
11404 qs_end = chunks[3];
11405 continue;
11406 }
11407 return 0;
11408 }
11409 break;
11410 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11411 value_start++;
11412 }
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11413 else {
11414 /* Jump the argument length. */
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11415 value_start = arg_start + url_param_name_l + 1;
11416
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11417 /* Check for pointer wrapping. */
11418 if (fix_pointer_if_wrap(chunks, &value_start)) {
11419 /* Update the end pointer. */
11420 qs_end = chunks[3];
11421
11422 /* Check for overflow. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11423 if (value_start >= qs_end)
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11424 return 0;
11425 }
11426 }
11427
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11428 value_end = value_start;
11429
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11430 while (1) {
11431 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
11432 value_end++;
11433 if (value_end < qs_end)
11434 break;
11435 /* process buffer wrapping. */
11436 if (value_end >= chunks[0] &&
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11437 value_end < chunks[1] &&
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11438 chunks[2]) {
11439 value_end = chunks[2];
11440 qs_end = chunks[3];
11441 continue;
11442 }
11443 break;
11444 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11445
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11446 *vstart = value_start;
11447 *vend = value_end;
Cyril Bontéce1ef4d2015-11-26 21:39:56 +0100[diff] [blame]11448 return 1;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11449}
11450
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11451/* This scans a URL-encoded query string. It takes an optionally wrapping
11452 * string whose first contigous chunk has its beginning in ctx->a[0] and end
11453 * in ctx->a[1], and the optional second part in (ctx->a[2]..ctx->a[3]). The
11454 * pointers are updated for next iteration before leaving.
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11455 */
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11456static int
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11457smp_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]11458{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11459 const char *vstart, *vend;
11460 struct chunk *temp;
11461 const char **chunks = (const char **)smp->ctx.a;
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11462
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11463 if (!find_next_url_param(chunks,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11464 name, name_len,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11465 &vstart, &vend,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11466 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11467 return 0;
11468
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11469 /* Create sample. If the value is contiguous, return the pointer as CONST,
11470 * if the value is wrapped, copy-it in a buffer.
11471 */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11472 smp->data.type = SMP_T_STR;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11473 if (chunks[2] &&
11474 vstart >= chunks[0] && vstart <= chunks[1] &&
11475 vend >= chunks[2] && vend <= chunks[3]) {
11476 /* Wrapped case. */
11477 temp = get_trash_chunk();
11478 memcpy(temp->str, vstart, chunks[1] - vstart);
11479 memcpy(temp->str + ( chunks[1] - vstart ), chunks[2], vend - chunks[2]);
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11480 smp->data.u.str.str = temp->str;
11481 smp->data.u.str.len = ( chunks[1] - vstart ) + ( vend - chunks[2] );
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11482 } else {
11483 /* Contiguous case. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11484 smp->data.u.str.str = (char *)vstart;
11485 smp->data.u.str.len = vend - vstart;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11486 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
11487 }
11488
11489 /* Update context, check wrapping. */
11490 chunks[0] = vend;
11491 if (chunks[2] && vend >= chunks[2] && vend <= chunks[3]) {
11492 chunks[1] = chunks[3];
11493 chunks[2] = NULL;
11494 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11495
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11496 if (chunks[0] < chunks[1])
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11497 smp->flags |= SMP_F_NOT_LAST;
11498
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11499 return 1;
11500}
11501
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11502/* This function iterates over each parameter of the query string. It uses
11503 * 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]11504 * parameter. Since it uses smp_fetch_param(), ctx->a[2..3] are both NULL.
11505 * An optional parameter name is passed in args[0], otherwise any parameter is
11506 * considered. It supports an optional delimiter argument for the beginning of
11507 * the string in args[1], which defaults to "?".
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11508 */
11509static int
11510smp_fetch_url_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11511{
11512 struct http_msg *msg;
11513 char delim = '?';
11514 const char *name;
11515 int name_len;
11516
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11517 if (!args ||
11518 (args[0].type && args[0].type != ARGT_STR) ||
11519 (args[1].type && args[1].type != ARGT_STR))
11520 return 0;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11521
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11522 name = "";
11523 name_len = 0;
11524 if (args->type == ARGT_STR) {
11525 name = args->data.str.str;
11526 name_len = args->data.str.len;
11527 }
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11528
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11529 if (args[1].type)
11530 delim = *args[1].data.str.str;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11531
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11532 if (!smp->ctx.a[0]) { // first call, find the query string
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11533 CHECK_HTTP_MESSAGE_FIRST();
11534
11535 msg = &smp->strm->txn->req;
11536
11537 smp->ctx.a[0] = find_param_list(msg->chn->buf->p + msg->sl.rq.u,
11538 msg->sl.rq.u_l, delim);
11539 if (!smp->ctx.a[0])
11540 return 0;
11541
11542 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]11543
11544 /* Assume that the context is filled with NULL pointer
11545 * before the first call.
11546 * smp->ctx.a[2] = NULL;
11547 * smp->ctx.a[3] = NULL;
11548 */
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11549 }
11550
11551 return smp_fetch_param(delim, name, name_len, args, smp, kw, private);
11552}
11553
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11554/* This function iterates over each parameter of the body. This requires
11555 * that the body has been waited for using http-buffer-request. It uses
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11556 * ctx->a[0] and ctx->a[1] to store the beginning and end of the first
11557 * contigous part of the body, and optionally ctx->a[2..3] to reference the
11558 * optional second part if the body wraps at the end of the buffer. An optional
11559 * parameter name is passed in args[0], otherwise any parameter is considered.
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11560 */
11561static int
11562smp_fetch_body_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11563{
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11564 struct http_msg *msg;
11565 unsigned long len;
11566 unsigned long block1;
11567 char *body;
11568 const char *name;
11569 int name_len;
11570
11571 if (!args || (args[0].type && args[0].type != ARGT_STR))
11572 return 0;
11573
11574 name = "";
11575 name_len = 0;
11576 if (args[0].type == ARGT_STR) {
11577 name = args[0].data.str.str;
11578 name_len = args[0].data.str.len;
11579 }
11580
11581 if (!smp->ctx.a[0]) { // first call, find the query string
11582 CHECK_HTTP_MESSAGE_FIRST();
11583
11584 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]11585 msg = &smp->strm->txn->req;
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11586 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]11587 msg = &smp->strm->txn->rsp;
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11588
11589 len = http_body_bytes(msg);
11590 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
11591
11592 block1 = len;
11593 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
11594 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
11595
11596 if (block1 == len) {
11597 /* buffer is not wrapped (or empty) */
11598 smp->ctx.a[0] = body;
11599 smp->ctx.a[1] = body + len;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11600
11601 /* Assume that the context is filled with NULL pointer
11602 * before the first call.
11603 * smp->ctx.a[2] = NULL;
11604 * smp->ctx.a[3] = NULL;
11605 */
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11606 }
11607 else {
11608 /* buffer is wrapped, we need to defragment it */
11609 smp->ctx.a[0] = body;
11610 smp->ctx.a[1] = body + block1;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11611 smp->ctx.a[2] = msg->chn->buf->data;
11612 smp->ctx.a[3] = msg->chn->buf->data + ( len - block1 );
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11613 }
11614 }
11615 return smp_fetch_param('&', name, name_len, args, smp, kw, private);
11616}
11617
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11618/* Return the signed integer value for the specified url parameter (see url_param
11619 * above).
11620 */
11621static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11622smp_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]11623{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11624 int ret = smp_fetch_url_param(args, smp, kw, private);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11625
11626 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11627 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11628 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]11629 }
11630
11631 return ret;
11632}
11633
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11634/* This produces a 32-bit hash of the concatenation of the first occurrence of
11635 * the Host header followed by the path component if it begins with a slash ('/').
11636 * This means that '*' will not be added, resulting in exactly the first Host
11637 * entry. If no Host header is found, then the path is used. The resulting value
11638 * is hashed using the url hash followed by a full avalanche hash and provides a
11639 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
11640 * high-traffic sites without having to store whole paths.
11641 * this differs from the base32 functions in that it includes the url parameters
11642 * as well as the path
11643 */
11644static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11645smp_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]11646{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11647 struct http_txn *txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11648 struct hdr_ctx ctx;
11649 unsigned int hash = 0;
11650 char *ptr, *beg, *end;
11651 int len;
11652
11653 CHECK_HTTP_MESSAGE_FIRST();
11654
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11655 txn = smp->strm->txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11656 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11657 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]11658 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
11659 ptr = ctx.line + ctx.val;
11660 len = ctx.vlen;
11661 while (len--)
11662 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
11663 }
11664
11665 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11666 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]11667 beg = http_get_path(txn);
11668 if (!beg)
11669 beg = end;
11670
11671 for (ptr = beg; ptr < end ; ptr++);
11672
11673 if (beg < ptr && *beg == '/') {
11674 while (beg < ptr)
11675 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
11676 }
11677 hash = full_hash(hash);
11678
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11679 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11680 smp->data.u.sint = hash;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11681 smp->flags = SMP_F_VOL_1ST;
11682 return 1;
11683}
11684
11685/* This concatenates the source address with the 32-bit hash of the Host and
11686 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
11687 * per-url counters. The result is a binary block from 8 to 20 bytes depending
11688 * on the source address length. The URL hash is stored before the address so
11689 * that in environments where IPv6 is insignificant, truncating the output to
11690 * 8 bytes would still work.
11691 */
11692static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11693smp_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]11694{
11695 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11696 struct connection *cli_conn = objt_conn(smp->sess->origin);
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11697 unsigned int hash;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11698
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11699 if (!smp_fetch_url32(args, smp, kw, private))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11700 return 0;
11701
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11702 /* The returned hash is a 32 bytes integer. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11703 hash = smp->data.u.sint;
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11704
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11705 temp = get_trash_chunk();
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11706 memcpy(temp->str + temp->len, &hash, sizeof(hash));
11707 temp->len += sizeof(hash);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11708
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11709 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11710 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11711 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]11712 temp->len += 4;
11713 break;
11714 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11715 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]11716 temp->len += 16;
11717 break;
11718 default:
11719 return 0;
11720 }
11721
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11722 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11723 smp->data.type = SMP_T_BIN;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11724 return 1;
11725}
11726
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11727/* This function is used to validate the arguments passed to any "hdr" fetch
11728 * keyword. These keywords support an optional positive or negative occurrence
11729 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
11730 * is assumed that the types are already the correct ones. Returns 0 on error,
11731 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
11732 * error message in case of error, that the caller is responsible for freeing.
11733 * The initial location must either be freeable or NULL.
11734 */
Thierry FOURNIER49f45af2014-12-08 19:50:43 +0100[diff] [blame]11735int val_hdr(struct arg *arg, char **err_msg)
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11736{
11737 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]11738 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11739 return 0;
11740 }
11741 return 1;
11742}
11743
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11744/* takes an UINT value on input supposed to represent the time since EPOCH,
11745 * adds an optional offset found in args[0] and emits a string representing
11746 * the date in RFC-1123/5322 format.
11747 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11748static int sample_conv_http_date(const struct arg *args, struct sample *smp, void *private)
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11749{
Cyril Bontéf78d8962016-01-22 19:40:28 +0100[diff] [blame]11750 const char day[7][4] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11751 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
11752 struct chunk *temp;
11753 struct tm *tm;
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11754 /* 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]11755 time_t curr_date = smp->data.u.sint & 0x007fffffffffffffLL;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11756
11757 /* add offset */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11758 if (args && (args[0].type == ARGT_SINT))
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11759 curr_date += args[0].data.sint;
11760
11761 tm = gmtime(&curr_date);
Thierry FOURNIERfac9ccf2015-07-08 00:15:20 +0200[diff] [blame]11762 if (!tm)
11763 return 0;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11764
11765 temp = get_trash_chunk();
11766 temp->len = snprintf(temp->str, temp->size - temp->len,
11767 "%s, %02d %s %04d %02d:%02d:%02d GMT",
11768 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
11769 tm->tm_hour, tm->tm_min, tm->tm_sec);
11770
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11771 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11772 smp->data.type = SMP_T_STR;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11773 return 1;
11774}
11775
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11776/* Match language range with language tag. RFC2616 14.4:
11777 *
11778 * A language-range matches a language-tag if it exactly equals
11779 * the tag, or if it exactly equals a prefix of the tag such
11780 * that the first tag character following the prefix is "-".
11781 *
11782 * Return 1 if the strings match, else return 0.
11783 */
11784static inline int language_range_match(const char *range, int range_len,
11785 const char *tag, int tag_len)
11786{
11787 const char *end = range + range_len;
11788 const char *tend = tag + tag_len;
11789 while (range < end) {
11790 if (*range == '-' && tag == tend)
11791 return 1;
11792 if (*range != *tag || tag == tend)
11793 return 0;
11794 range++;
11795 tag++;
11796 }
11797 /* Return true only if the last char of the tag is matched. */
11798 return tag == tend;
11799}
11800
11801/* Arguments: The list of expected value, the number of parts returned and the separator */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11802static int sample_conv_q_prefered(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11803{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11804 const char *al = smp->data.u.str.str;
11805 const char *end = al + smp->data.u.str.len;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11806 const char *token;
11807 int toklen;
11808 int qvalue;
11809 const char *str;
11810 const char *w;
11811 int best_q = 0;
11812
11813 /* Set the constant to the sample, because the output of the
11814 * function will be peek in the constant configuration string.
11815 */
11816 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11817 smp->data.u.str.size = 0;
11818 smp->data.u.str.str = "";
11819 smp->data.u.str.len = 0;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11820
11821 /* Parse the accept language */
11822 while (1) {
11823
11824 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11825 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11826 al++;
11827 if (al >= end)
11828 break;
11829
11830 /* Start of the fisrt word. */
11831 token = al;
11832
11833 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11834 while (al < end && *al != ';' && *al != ',' && !isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11835 al++;
11836 if (al == token)
11837 goto expect_comma;
11838
11839 /* Length of the token. */
11840 toklen = al - token;
11841 qvalue = 1000;
11842
11843 /* Check if the token exists in the list. If the token not exists,
11844 * jump to the next token.
11845 */
11846 str = args[0].data.str.str;
11847 w = str;
11848 while (1) {
11849 if (*str == ';' || *str == '\0') {
11850 if (language_range_match(token, toklen, w, str-w))
11851 goto look_for_q;
11852 if (*str == '\0')
11853 goto expect_comma;
11854 w = str + 1;
11855 }
11856 str++;
11857 }
11858 goto expect_comma;
11859
11860look_for_q:
11861
11862 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11863 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11864 al++;
11865 if (al >= end)
11866 goto process_value;
11867
11868 /* If ',' is found, process the result */
11869 if (*al == ',')
11870 goto process_value;
11871
11872 /* If the character is different from ';', look
11873 * for the end of the header part in best effort.
11874 */
11875 if (*al != ';')
11876 goto expect_comma;
11877
11878 /* Assumes that the char is ';', now expect "q=". */
11879 al++;
11880
11881 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11882 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11883 al++;
11884 if (al >= end)
11885 goto process_value;
11886
11887 /* Expect 'q'. If no 'q', continue in best effort */
11888 if (*al != 'q')
11889 goto process_value;
11890 al++;
11891
11892 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11893 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11894 al++;
11895 if (al >= end)
11896 goto process_value;
11897
11898 /* Expect '='. If no '=', continue in best effort */
11899 if (*al != '=')
11900 goto process_value;
11901 al++;
11902
11903 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11904 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11905 al++;
11906 if (al >= end)
11907 goto process_value;
11908
11909 /* Parse the q value. */
11910 qvalue = parse_qvalue(al, &al);
11911
11912process_value:
11913
11914 /* If the new q value is the best q value, then store the associated
11915 * language in the response. If qvalue is the biggest value (1000),
11916 * break the process.
11917 */
11918 if (qvalue > best_q) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11919 smp->data.u.str.str = (char *)w;
11920 smp->data.u.str.len = str - w;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11921 if (qvalue >= 1000)
11922 break;
11923 best_q = qvalue;
11924 }
11925
11926expect_comma:
11927
11928 /* Expect comma or end. If the end is detected, quit the loop. */
11929 while (al < end && *al != ',')
11930 al++;
11931 if (al >= end)
11932 break;
11933
11934 /* Comma is found, jump it and restart the analyzer. */
11935 al++;
11936 }
11937
11938 /* Set default value if required. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11939 if (smp->data.u.str.len == 0 && args[1].type == ARGT_STR) {
11940 smp->data.u.str.str = args[1].data.str.str;
11941 smp->data.u.str.len = args[1].data.str.len;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11942 }
11943
11944 /* Return true only if a matching language was found. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11945 return smp->data.u.str.len != 0;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11946}
11947
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]11948/* This fetch url-decode any input string. */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11949static int sample_conv_url_dec(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]11950{
11951 /* If the constant flag is set or if not size is avalaible at
11952 * the end of the buffer, copy the string in other buffer
11953 * before decoding.
11954 */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11955 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]11956 struct chunk *str = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11957 memcpy(str->str, smp->data.u.str.str, smp->data.u.str.len);
11958 smp->data.u.str.str = str->str;
11959 smp->data.u.str.size = str->size;
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]11960 smp->flags &= ~SMP_F_CONST;
11961 }
11962
11963 /* Add final \0 required by url_decode(), and convert the input string. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11964 smp->data.u.str.str[smp->data.u.str.len] = '\0';
11965 smp->data.u.str.len = url_decode(smp->data.u.str.str);
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]11966 return 1;
11967}
11968
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11969static int smp_conv_req_capture(const struct arg *args, struct sample *smp, void *private)
11970{
11971 struct proxy *fe = strm_fe(smp->strm);
11972 int idx, i;
11973 struct cap_hdr *hdr;
11974 int len;
11975
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11976 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11977 return 0;
11978
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11979 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11980
11981 /* Check the availibity of the capture id. */
11982 if (idx > fe->nb_req_cap - 1)
11983 return 0;
11984
11985 /* Look for the original configuration. */
11986 for (hdr = fe->req_cap, i = fe->nb_req_cap - 1;
11987 hdr != NULL && i != idx ;
11988 i--, hdr = hdr->next);
11989 if (!hdr)
11990 return 0;
11991
11992 /* check for the memory allocation */
11993 if (smp->strm->req_cap[hdr->index] == NULL)
11994 smp->strm->req_cap[hdr->index] = pool_alloc2(hdr->pool);
11995 if (smp->strm->req_cap[hdr->index] == NULL)
11996 return 0;
11997
11998 /* Check length. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11999 len = smp->data.u.str.len;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12000 if (len > hdr->len)
12001 len = hdr->len;
12002
12003 /* Capture input data. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12004 memcpy(smp->strm->req_cap[idx], smp->data.u.str.str, len);
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12005 smp->strm->req_cap[idx][len] = '\0';
12006
12007 return 1;
12008}
12009
12010static int smp_conv_res_capture(const struct arg *args, struct sample *smp, void *private)
12011{
12012 struct proxy *fe = strm_fe(smp->strm);
12013 int idx, i;
12014 struct cap_hdr *hdr;
12015 int len;
12016
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12017 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12018 return 0;
12019
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12020 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12021
12022 /* Check the availibity of the capture id. */
12023 if (idx > fe->nb_rsp_cap - 1)
12024 return 0;
12025
12026 /* Look for the original configuration. */
12027 for (hdr = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
12028 hdr != NULL && i != idx ;
12029 i--, hdr = hdr->next);
12030 if (!hdr)
12031 return 0;
12032
12033 /* check for the memory allocation */
12034 if (smp->strm->res_cap[hdr->index] == NULL)
12035 smp->strm->res_cap[hdr->index] = pool_alloc2(hdr->pool);
12036 if (smp->strm->res_cap[hdr->index] == NULL)
12037 return 0;
12038
12039 /* Check length. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12040 len = smp->data.u.str.len;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12041 if (len > hdr->len)
12042 len = hdr->len;
12043
12044 /* Capture input data. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12045 memcpy(smp->strm->res_cap[idx], smp->data.u.str.str, len);
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12046 smp->strm->res_cap[idx][len] = '\0';
12047
12048 return 1;
12049}
12050
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12051/* This function executes one of the set-{method,path,query,uri} actions. It
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12052 * takes the string from the variable 'replace' with length 'len', then modifies
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12053 * the relevant part of the request line accordingly. Then it updates various
12054 * pointers to the next elements which were moved, and the total buffer length.
12055 * It finds the action to be performed in p[2], previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12056 * parse_set_req_line(). It returns 0 in case of success, -1 in case of internal
12057 * error, though this can be revisited when this code is finally exploited.
12058 *
12059 * 'action' can be '0' to replace method, '1' to replace path, '2' to replace
12060 * query string and 3 to replace uri.
12061 *
12062 * In query string case, the mark question '?' must be set at the start of the
12063 * string by the caller, event if the replacement query string is empty.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12064 */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12065int http_replace_req_line(int action, const char *replace, int len,
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12066 struct proxy *px, struct stream *s)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12067{
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12068 struct http_txn *txn = s->txn;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12069 char *cur_ptr, *cur_end;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12070 int offset = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12071 int delta;
12072
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12073 switch (action) {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12074 case 0: // method
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12075 cur_ptr = s->req.buf->p;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12076 cur_end = cur_ptr + txn->req.sl.rq.m_l;
12077
12078 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12079 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12080 txn->req.sl.rq.m_l += delta;
12081 txn->req.sl.rq.u += delta;
12082 txn->req.sl.rq.v += delta;
12083 break;
12084
12085 case 1: // path
12086 cur_ptr = http_get_path(txn);
12087 if (!cur_ptr)
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12088 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12089
12090 cur_end = cur_ptr;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12091 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]12092 cur_end++;
12093
12094 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12095 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12096 txn->req.sl.rq.u_l += delta;
12097 txn->req.sl.rq.v += delta;
12098 break;
12099
12100 case 2: // query
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12101 offset = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12102 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12103 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12104 while (cur_ptr < cur_end && *cur_ptr != '?')
12105 cur_ptr++;
12106
12107 /* skip the question mark or indicate that we must insert it
12108 * (but only if the format string is not empty then).
12109 */
12110 if (cur_ptr < cur_end)
12111 cur_ptr++;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12112 else if (len > 1)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12113 offset = 0;
12114
12115 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12116 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12117 txn->req.sl.rq.u_l += delta;
12118 txn->req.sl.rq.v += delta;
12119 break;
12120
12121 case 3: // uri
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
12125 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12126 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12127 txn->req.sl.rq.u_l += delta;
12128 txn->req.sl.rq.v += delta;
12129 break;
12130
12131 default:
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12132 return -1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12133 }
12134
12135 /* commit changes and adjust end of message */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12136 delta = buffer_replace2(s->req.buf, cur_ptr, cur_end, replace + offset, len - offset);
Thierry FOURNIER7f6192c2015-04-26 18:01:40 +0200[diff] [blame]12137 txn->req.sl.rq.l += delta;
12138 txn->hdr_idx.v[0].len += delta;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12139 http_msg_move_end(&txn->req, delta);
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12140 return 0;
12141}
12142
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12143/* This function replace the HTTP status code and the associated message. The
12144 * variable <status> contains the new status code. This function never fails.
12145 */
12146void http_set_status(unsigned int status, struct stream *s)
12147{
12148 struct http_txn *txn = s->txn;
12149 char *cur_ptr, *cur_end;
12150 int delta;
12151 char *res;
12152 int c_l;
12153 const char *msg;
12154 int msg_len;
12155
12156 chunk_reset(&trash);
12157
12158 res = ultoa_o(status, trash.str, trash.size);
12159 c_l = res - trash.str;
12160
12161 trash.str[c_l] = ' ';
12162 trash.len = c_l + 1;
12163
12164 msg = get_reason(status);
12165 msg_len = strlen(msg);
12166
12167 strncpy(&trash.str[trash.len], msg, trash.size - trash.len);
12168 trash.len += msg_len;
12169
12170 cur_ptr = s->res.buf->p + txn->rsp.sl.st.c;
12171 cur_end = s->res.buf->p + txn->rsp.sl.st.r + txn->rsp.sl.st.r_l;
12172
12173 /* commit changes and adjust message */
12174 delta = buffer_replace2(s->res.buf, cur_ptr, cur_end, trash.str, trash.len);
12175
12176 /* adjust res line offsets and lengths */
12177 txn->rsp.sl.st.r += c_l - txn->rsp.sl.st.c_l;
12178 txn->rsp.sl.st.c_l = c_l;
12179 txn->rsp.sl.st.r_l = msg_len;
12180
12181 delta = trash.len - (cur_end - cur_ptr);
12182 txn->rsp.sl.st.l += delta;
12183 txn->hdr_idx.v[0].len += delta;
12184 http_msg_move_end(&txn->rsp, delta);
12185}
12186
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12187/* This function executes one of the set-{method,path,query,uri} actions. It
12188 * builds a string in the trash from the specified format string. It finds
Thierry FOURNIER3f4bc652015-08-26 16:23:34 +0200[diff] [blame]12189 * the action to be performed in <http.action>, previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12190 * parse_set_req_line(). The replacement action is excuted by the function
Thierry FOURNIER3f4bc652015-08-26 16:23:34 +0200[diff] [blame]12191 * http_action_set_req_line(). It always returns ACT_RET_CONT. If an error
12192 * occurs the action is canceled, but the rule processing continue.
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12193 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12194enum act_return http_action_set_req_line(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12195 struct session *sess, struct stream *s, int flags)
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12196{
12197 chunk_reset(&trash);
12198
12199 /* If we have to create a query string, prepare a '?'. */
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12200 if (rule->arg.http.action == 2)
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12201 trash.str[trash.len++] = '?';
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12202 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]12203
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12204 http_replace_req_line(rule->arg.http.action, trash.str, trash.len, px, s);
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12205 return ACT_RET_CONT;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12206}
12207
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12208/* This function is just a compliant action wrapper for "set-status". */
12209enum act_return action_http_set_status(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12210 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12211{
12212 http_set_status(rule->arg.status.code, s);
12213 return ACT_RET_CONT;
12214}
12215
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12216/* parse an http-request action among :
12217 * set-method
12218 * set-path
12219 * set-query
12220 * set-uri
12221 *
12222 * All of them accept a single argument of type string representing a log-format.
12223 * The resulting rule makes use of arg->act.p[0..1] to store the log-format list
12224 * 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]12225 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12226 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12227enum act_parse_ret parse_set_req_line(const char **args, int *orig_arg, struct proxy *px,
12228 struct act_rule *rule, char **err)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12229{
12230 int cur_arg = *orig_arg;
12231
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12232 rule->action = ACT_CUSTOM;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12233
12234 switch (args[0][4]) {
12235 case 'm' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12236 rule->arg.http.action = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12237 rule->action_ptr = http_action_set_req_line;
12238 break;
12239 case 'p' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12240 rule->arg.http.action = 1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12241 rule->action_ptr = http_action_set_req_line;
12242 break;
12243 case 'q' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12244 rule->arg.http.action = 2;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12245 rule->action_ptr = http_action_set_req_line;
12246 break;
12247 case 'u' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12248 rule->arg.http.action = 3;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12249 rule->action_ptr = http_action_set_req_line;
12250 break;
12251 default:
12252 memprintf(err, "internal error: unhandled action '%s'", args[0]);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12253 return ACT_RET_PRS_ERR;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12254 }
12255
12256 if (!*args[cur_arg] ||
12257 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
12258 memprintf(err, "expects exactly 1 argument <format>");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12259 return ACT_RET_PRS_ERR;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12260 }
12261
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12262 LIST_INIT(&rule->arg.http.logfmt);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12263 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12264 parse_logformat_string(args[cur_arg], proxy, &rule->arg.http.logfmt, LOG_OPT_HTTP,
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12265 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
12266 proxy->conf.args.file, proxy->conf.args.line);
12267
12268 (*orig_arg)++;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12269 return ACT_RET_PRS_OK;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12270}
12271
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12272/* parse set-status action:
12273 * This action accepts a single argument of type int representing
12274 * an http status code. It returns ACT_RET_PRS_OK on success,
12275 * ACT_RET_PRS_ERR on error.
12276 */
12277enum act_parse_ret parse_http_set_status(const char **args, int *orig_arg, struct proxy *px,
12278 struct act_rule *rule, char **err)
12279{
12280 char *error;
12281
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12282 rule->action = ACT_CUSTOM;
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12283 rule->action_ptr = action_http_set_status;
12284
12285 /* Check if an argument is available */
12286 if (!*args[*orig_arg]) {
12287 memprintf(err, "expects exactly 1 argument <status>");
12288 return ACT_RET_PRS_ERR;
12289 }
12290
12291 /* convert status code as integer */
12292 rule->arg.status.code = strtol(args[*orig_arg], &error, 10);
12293 if (*error != '\0' || rule->arg.status.code < 100 || rule->arg.status.code > 999) {
12294 memprintf(err, "expects an integer status code between 100 and 999");
12295 return ACT_RET_PRS_ERR;
12296 }
12297
12298 (*orig_arg)++;
12299 return ACT_RET_PRS_OK;
12300}
12301
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12302/* This function executes the "capture" action. It executes a fetch expression,
12303 * turns the result into a string and puts it in a capture slot. It always
12304 * returns 1. If an error occurs the action is cancelled, but the rule
12305 * processing continues.
12306 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12307enum act_return http_action_req_capture(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12308 struct session *sess, struct stream *s, int flags)
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12309{
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12310 struct sample *key;
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12311 struct cap_hdr *h = rule->arg.cap.hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12312 char **cap = s->req_cap;
12313 int len;
12314
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12315 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]12316 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12317 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12318
12319 if (cap[h->index] == NULL)
12320 cap[h->index] = pool_alloc2(h->pool);
12321
12322 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12323 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12324
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12325 len = key->data.u.str.len;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12326 if (len > h->len)
12327 len = h->len;
12328
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12329 memcpy(cap[h->index], key->data.u.str.str, len);
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12330 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12331 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12332}
12333
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12334/* This function executes the "capture" action and store the result in a
12335 * capture slot if exists. It executes a fetch expression, turns the result
12336 * into a string and puts it in a capture slot. It always returns 1. If an
12337 * error occurs the action is cancelled, but the rule processing continues.
12338 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12339enum 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]12340 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12341{
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12342 struct sample *key;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12343 struct cap_hdr *h;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12344 char **cap = s->req_cap;
12345 struct proxy *fe = strm_fe(s);
12346 int len;
12347 int i;
12348
12349 /* Look for the original configuration. */
12350 for (h = fe->req_cap, i = fe->nb_req_cap - 1;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12351 h != NULL && i != rule->arg.capid.idx ;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12352 i--, h = h->next);
12353 if (!h)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12354 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12355
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12356 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]12357 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12358 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12359
12360 if (cap[h->index] == NULL)
12361 cap[h->index] = pool_alloc2(h->pool);
12362
12363 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12364 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12365
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12366 len = key->data.u.str.len;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12367 if (len > h->len)
12368 len = h->len;
12369
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12370 memcpy(cap[h->index], key->data.u.str.str, len);
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12371 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12372 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12373}
12374
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12375/* parse an "http-request capture" action. It takes a single argument which is
12376 * a sample fetch expression. It stores the expression into arg->act.p[0] and
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12377 * the allocated hdr_cap struct or the preallocated "id" into arg->act.p[1].
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12378 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12379 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12380enum act_parse_ret parse_http_req_capture(const char **args, int *orig_arg, struct proxy *px,
12381 struct act_rule *rule, char **err)
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12382{
12383 struct sample_expr *expr;
12384 struct cap_hdr *hdr;
12385 int cur_arg;
Willy Tarreau3986ac12015-05-08 16:13:42 +0200[diff] [blame]12386 int len = 0;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12387
12388 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12389 if (strcmp(args[cur_arg], "if") == 0 ||
12390 strcmp(args[cur_arg], "unless") == 0)
12391 break;
12392
12393 if (cur_arg < *orig_arg + 3) {
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12394 memprintf(err, "expects <expression> [ 'len' <length> | id <idx> ]");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12395 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12396 }
12397
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12398 cur_arg = *orig_arg;
12399 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12400 if (!expr)
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12401 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12402
12403 if (!(expr->fetch->val & SMP_VAL_FE_HRQ_HDR)) {
12404 memprintf(err,
12405 "fetch method '%s' extracts information from '%s', none of which is available here",
12406 args[cur_arg-1], sample_src_names(expr->fetch->use));
12407 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12408 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12409 }
12410
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12411 if (!args[cur_arg] || !*args[cur_arg]) {
12412 memprintf(err, "expects 'len or 'id'");
12413 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12414 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12415 }
12416
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12417 if (strcmp(args[cur_arg], "len") == 0) {
12418 cur_arg++;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12419
12420 if (!(px->cap & PR_CAP_FE)) {
12421 memprintf(err, "proxy '%s' has no frontend capability", px->id);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12422 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12423 }
12424
12425 proxy->conf.args.ctx = ARGC_CAP;
12426
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12427 if (!args[cur_arg]) {
12428 memprintf(err, "missing length value");
12429 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12430 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12431 }
12432 /* we copy the table name for now, it will be resolved later */
12433 len = atoi(args[cur_arg]);
12434 if (len <= 0) {
12435 memprintf(err, "length must be > 0");
12436 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12437 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12438 }
12439 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12440
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12441 if (!len) {
12442 memprintf(err, "a positive 'len' argument is mandatory");
12443 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12444 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12445 }
12446
Vincent Bernat02779b62016-04-03 13:48:43 +0200[diff] [blame]12447 hdr = calloc(1, sizeof(*hdr));
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12448 hdr->next = px->req_cap;
12449 hdr->name = NULL; /* not a header capture */
12450 hdr->namelen = 0;
12451 hdr->len = len;
12452 hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
12453 hdr->index = px->nb_req_cap++;
12454
12455 px->req_cap = hdr;
12456 px->to_log |= LW_REQHDR;
12457
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12458 rule->action = ACT_CUSTOM;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12459 rule->action_ptr = http_action_req_capture;
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12460 rule->arg.cap.expr = expr;
12461 rule->arg.cap.hdr = hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12462 }
12463
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12464 else if (strcmp(args[cur_arg], "id") == 0) {
12465 int id;
12466 char *error;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12467
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12468 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12469
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12470 if (!args[cur_arg]) {
12471 memprintf(err, "missing id value");
12472 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12473 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12474 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12475
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12476 id = strtol(args[cur_arg], &error, 10);
12477 if (*error != '\0') {
12478 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12479 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12480 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12481 }
12482 cur_arg++;
12483
12484 proxy->conf.args.ctx = ARGC_CAP;
12485
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12486 rule->action = ACT_CUSTOM;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12487 rule->action_ptr = http_action_req_capture_by_id;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12488 rule->arg.capid.expr = expr;
12489 rule->arg.capid.idx = id;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12490 }
12491
12492 else {
12493 memprintf(err, "expects 'len' or 'id', found '%s'", args[cur_arg]);
12494 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12495 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12496 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12497
12498 *orig_arg = cur_arg;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12499 return ACT_RET_PRS_OK;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12500}
12501
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12502/* This function executes the "capture" action and store the result in a
12503 * capture slot if exists. It executes a fetch expression, turns the result
12504 * into a string and puts it in a capture slot. It always returns 1. If an
12505 * error occurs the action is cancelled, but the rule processing continues.
12506 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12507enum 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]12508 struct session *sess, struct stream *s, int flags)
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12509{
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12510 struct sample *key;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12511 struct cap_hdr *h;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12512 char **cap = s->res_cap;
12513 struct proxy *fe = strm_fe(s);
12514 int len;
12515 int i;
12516
12517 /* Look for the original configuration. */
12518 for (h = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12519 h != NULL && i != rule->arg.capid.idx ;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12520 i--, h = h->next);
12521 if (!h)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12522 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12523
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12524 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]12525 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12526 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12527
12528 if (cap[h->index] == NULL)
12529 cap[h->index] = pool_alloc2(h->pool);
12530
12531 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12532 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12533
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12534 len = key->data.u.str.len;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12535 if (len > h->len)
12536 len = h->len;
12537
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12538 memcpy(cap[h->index], key->data.u.str.str, len);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12539 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12540 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12541}
12542
12543/* parse an "http-response capture" action. It takes a single argument which is
12544 * a sample fetch expression. It stores the expression into arg->act.p[0] and
12545 * the allocated hdr_cap struct od the preallocated id into arg->act.p[1].
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12546 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12547 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12548enum act_parse_ret parse_http_res_capture(const char **args, int *orig_arg, struct proxy *px,
12549 struct act_rule *rule, char **err)
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12550{
12551 struct sample_expr *expr;
12552 int cur_arg;
12553 int id;
12554 char *error;
12555
12556 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12557 if (strcmp(args[cur_arg], "if") == 0 ||
12558 strcmp(args[cur_arg], "unless") == 0)
12559 break;
12560
12561 if (cur_arg < *orig_arg + 3) {
12562 memprintf(err, "expects <expression> [ 'len' <length> | id <idx> ]");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12563 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12564 }
12565
12566 cur_arg = *orig_arg;
12567 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12568 if (!expr)
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12569 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12570
12571 if (!(expr->fetch->val & SMP_VAL_FE_HRS_HDR)) {
12572 memprintf(err,
12573 "fetch method '%s' extracts information from '%s', none of which is available here",
12574 args[cur_arg-1], sample_src_names(expr->fetch->use));
12575 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12576 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12577 }
12578
12579 if (!args[cur_arg] || !*args[cur_arg]) {
12580 memprintf(err, "expects 'len or 'id'");
12581 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12582 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12583 }
12584
12585 if (strcmp(args[cur_arg], "id") != 0) {
12586 memprintf(err, "expects 'id', found '%s'", args[cur_arg]);
12587 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12588 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12589 }
12590
12591 cur_arg++;
12592
12593 if (!args[cur_arg]) {
12594 memprintf(err, "missing id value");
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 id = strtol(args[cur_arg], &error, 10);
12600 if (*error != '\0') {
12601 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12602 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12603 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12604 }
12605 cur_arg++;
12606
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12607 proxy->conf.args.ctx = ARGC_CAP;
12608
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12609 rule->action = ACT_CUSTOM;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12610 rule->action_ptr = http_action_res_capture_by_id;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12611 rule->arg.capid.expr = expr;
12612 rule->arg.capid.idx = id;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12613
12614 *orig_arg = cur_arg;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12615 return ACT_RET_PRS_OK;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12616}
12617
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12618/*
12619 * Return the struct http_req_action_kw associated to a keyword.
12620 */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12621struct action_kw *action_http_req_custom(const char *kw)
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12622{
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]12623 return action_lookup(&http_req_keywords.list, kw);
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12624}
12625
12626/*
12627 * Return the struct http_res_action_kw associated to a keyword.
12628 */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12629struct action_kw *action_http_res_custom(const char *kw)
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12630{
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]12631 return action_lookup(&http_res_keywords.list, kw);
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12632}
12633
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12634/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12635/* All supported ACL keywords must be declared here. */
12636/************************************************************************/
12637
12638/* Note: must not be declared <const> as its list will be overwritten.
12639 * Please take care of keeping this list alphabetically sorted.
12640 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]12641static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12642 { "base", "base", PAT_MATCH_STR },
12643 { "base_beg", "base", PAT_MATCH_BEG },
12644 { "base_dir", "base", PAT_MATCH_DIR },
12645 { "base_dom", "base", PAT_MATCH_DOM },
12646 { "base_end", "base", PAT_MATCH_END },
12647 { "base_len", "base", PAT_MATCH_LEN },
12648 { "base_reg", "base", PAT_MATCH_REG },
12649 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]12650
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12651 { "cook", "req.cook", PAT_MATCH_STR },
12652 { "cook_beg", "req.cook", PAT_MATCH_BEG },
12653 { "cook_dir", "req.cook", PAT_MATCH_DIR },
12654 { "cook_dom", "req.cook", PAT_MATCH_DOM },
12655 { "cook_end", "req.cook", PAT_MATCH_END },
12656 { "cook_len", "req.cook", PAT_MATCH_LEN },
12657 { "cook_reg", "req.cook", PAT_MATCH_REG },
12658 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12659
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12660 { "hdr", "req.hdr", PAT_MATCH_STR },
12661 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
12662 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
12663 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
12664 { "hdr_end", "req.hdr", PAT_MATCH_END },
12665 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
12666 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
12667 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12668
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12669 /* these two declarations uses strings with list storage (in place
12670 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
12671 * and delete functions are relative to the list management. The parse
12672 * and match method are related to the corresponding fetch methods. This
12673 * is very particular ACL declaration mode.
12674 */
12675 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
12676 { "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]12677
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12678 { "path", "path", PAT_MATCH_STR },
12679 { "path_beg", "path", PAT_MATCH_BEG },
12680 { "path_dir", "path", PAT_MATCH_DIR },
12681 { "path_dom", "path", PAT_MATCH_DOM },
12682 { "path_end", "path", PAT_MATCH_END },
12683 { "path_len", "path", PAT_MATCH_LEN },
12684 { "path_reg", "path", PAT_MATCH_REG },
12685 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12686
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12687 { "req_ver", "req.ver", PAT_MATCH_STR },
12688 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12689
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12690 { "scook", "res.cook", PAT_MATCH_STR },
12691 { "scook_beg", "res.cook", PAT_MATCH_BEG },
12692 { "scook_dir", "res.cook", PAT_MATCH_DIR },
12693 { "scook_dom", "res.cook", PAT_MATCH_DOM },
12694 { "scook_end", "res.cook", PAT_MATCH_END },
12695 { "scook_len", "res.cook", PAT_MATCH_LEN },
12696 { "scook_reg", "res.cook", PAT_MATCH_REG },
12697 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12698
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12699 { "shdr", "res.hdr", PAT_MATCH_STR },
12700 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
12701 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
12702 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
12703 { "shdr_end", "res.hdr", PAT_MATCH_END },
12704 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
12705 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
12706 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12707
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12708 { "url", "url", PAT_MATCH_STR },
12709 { "url_beg", "url", PAT_MATCH_BEG },
12710 { "url_dir", "url", PAT_MATCH_DIR },
12711 { "url_dom", "url", PAT_MATCH_DOM },
12712 { "url_end", "url", PAT_MATCH_END },
12713 { "url_len", "url", PAT_MATCH_LEN },
12714 { "url_reg", "url", PAT_MATCH_REG },
12715 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12716
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12717 { "urlp", "urlp", PAT_MATCH_STR },
12718 { "urlp_beg", "urlp", PAT_MATCH_BEG },
12719 { "urlp_dir", "urlp", PAT_MATCH_DIR },
12720 { "urlp_dom", "urlp", PAT_MATCH_DOM },
12721 { "urlp_end", "urlp", PAT_MATCH_END },
12722 { "urlp_len", "urlp", PAT_MATCH_LEN },
12723 { "urlp_reg", "urlp", PAT_MATCH_REG },
12724 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12725
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]12726 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12727}};
12728
12729/************************************************************************/
12730/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12731/************************************************************************/
12732/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]12733static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12734 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12735 { "base32", smp_fetch_base32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12736 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
12737
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]12738 /* capture are allocated and are permanent in the stream */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12739 { "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]12740
12741 /* retrieve these captures from the HTTP logs */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12742 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12743 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12744 { "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]12745
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12746 { "capture.res.hdr", smp_fetch_capture_header_res, ARG1(1,SINT), NULL, SMP_T_STR, SMP_USE_HRSHP },
12747 { "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]12748
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12749 /* cookie is valid in both directions (eg: for "stick ...") but cook*
12750 * are only here to match the ACL's name, are request-only and are used
12751 * for ACL compatibility only.
12752 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12753 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
12754 { "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]12755 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
12756 { "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]12757
12758 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
12759 * only here to match the ACL's name, are request-only and are used for
12760 * ACL compatibility only.
12761 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12762 { "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]12763 { "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]12764 { "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]12765 { "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]12766
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]12767 { "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]12768 { "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]12769 { "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]12770 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12771 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]12772 { "query", smp_fetch_query, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12773
12774 /* HTTP protocol on the request path */
12775 { "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]12776 { "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]12777
12778 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12779 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
12780 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12781
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]12782 { "req.body", smp_fetch_body, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12783 { "req.body_len", smp_fetch_body_len, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
12784 { "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]12785 { "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]12786
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12787 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12788 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
12789 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12790
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12791 /* 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]12792 { "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]12793 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
12794 { "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]12795
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12796 { "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]12797 { "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]12798 { "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]12799 { "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]12800 { "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]12801 { "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]12802 { "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]12803
12804 /* 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]12805 { "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]12806 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
12807 { "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]12808
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12809 { "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]12810 { "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]12811 { "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]12812 { "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]12813 { "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]12814 { "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]12815 { "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]12816
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12817 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12818 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12819 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
12820 { "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]12821 { "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]12822
12823 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12824 { "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]12825 { "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]12826 { "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]12827 { "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]12828
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12829 { "status", smp_fetch_stcode, 0, NULL, SMP_T_SINT, SMP_USE_HRSHP },
Thierry Fournier0e00dca2016-04-07 15:47:40 +0200[diff] [blame]12830 { "unique-id", smp_fetch_uniqueid, 0, NULL, SMP_T_STR, SMP_SRC_L4SRV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12831 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12832 { "url32", smp_fetch_url32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12833 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12834 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12835 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]12836 { "url_param", smp_fetch_url_param, ARG2(0,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
12837 { "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]12838 { "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]12839 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12840}};
12841
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12842
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12843/************************************************************************/
12844/* All supported converter keywords must be declared here. */
12845/************************************************************************/
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12846/* Note: must not be declared <const> as its list will be overwritten */
12847static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12848 { "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]12849 { "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]12850 { "capture-req", smp_conv_req_capture, ARG1(1,SINT), NULL, SMP_T_STR, SMP_T_STR},
12851 { "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]12852 { "url_dec", sample_conv_url_dec, 0, NULL, SMP_T_STR, SMP_T_STR},
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12853 { NULL, NULL, 0, 0, 0 },
12854}};
12855
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12856
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12857/************************************************************************/
12858/* All supported http-request action keywords must be declared here. */
12859/************************************************************************/
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12860struct action_kw_list http_req_actions = {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12861 .kw = {
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12862 { "capture", parse_http_req_capture },
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12863 { "set-method", parse_set_req_line },
12864 { "set-path", parse_set_req_line },
12865 { "set-query", parse_set_req_line },
12866 { "set-uri", parse_set_req_line },
Willy Tarreaucb703b02015-04-03 09:52:01 +0200[diff] [blame]12867 { NULL, NULL }
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12868 }
12869};
12870
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12871struct action_kw_list http_res_actions = {
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12872 .kw = {
12873 { "capture", parse_http_res_capture },
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12874 { "set-status", parse_http_set_status },
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12875 { NULL, NULL }
12876 }
12877};
12878
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12879__attribute__((constructor))
12880static void __http_protocol_init(void)
12881{
12882 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]12883 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12884 sample_register_convs(&sample_conv_kws);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12885 http_req_keywords_register(&http_req_actions);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12886 http_res_keywords_register(&http_res_actions);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12887}
12888
12889
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]12890/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]12891 * Local variables:
12892 * c-indent-level: 8
12893 * c-basic-offset: 8
12894 * End:
12895 */