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git01.mediatek.com / haproxy / f714fb533e2c9d0014a3bb035d92676cb48a3ddd / . / src / proto_http.c
blob: 50e3d486ee4798ae8d329b7a78a23b8ba82cff68 [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
1965 if (msg->sl.rq.u_l == 0) {
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]1966 /* HTTP/0.9 requests *must* have a request URI, per RFC 1945 */
1967 return 0;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1968 }
1969 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1970 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]1971 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1972 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1973 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1974 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1975 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1976 NULL, NULL);
1977 if (unlikely(!cur_end))
1978 return 0;
1979
1980 /* we have a full HTTP/1.0 request now and we know that
1981 * we have either a CR or an LF at <ptr>.
1982 */
1983 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1984 return 1;
1985}
1986
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1987/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1988 * and "keep-alive" values. If we already know that some headers may safely
1989 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1990 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1991 * - 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]1992 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1993 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1994 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1995 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1996 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1997 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1998void 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]1999{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2000 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2001 const char *hdr_val = "Connection";
2002 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2003
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2004 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2005 return;
2006
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2007 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2008 hdr_val = "Proxy-Connection";
2009 hdr_len = 16;
2010 }
2011
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2012 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2013 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2014 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]2015 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
2016 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2017 if (to_del & 2)
2018 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2019 else
2020 txn->flags |= TX_CON_KAL_SET;
2021 }
2022 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
2023 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2024 if (to_del & 1)
2025 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2026 else
2027 txn->flags |= TX_CON_CLO_SET;
2028 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2029 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
2030 txn->flags |= TX_HDR_CONN_UPG;
2031 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2032 }
2033
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2034 txn->flags |= TX_HDR_CONN_PRS;
2035 return;
2036}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2037
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2038/* Apply desired changes on the Connection: header. Values may be removed and/or
2039 * added depending on the <wanted> flags, which are exclusively composed of
2040 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
2041 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
2042 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2043void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2044{
2045 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2046 const char *hdr_val = "Connection";
2047 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2048
2049 ctx.idx = 0;
2050
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2051
2052 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2053 hdr_val = "Proxy-Connection";
2054 hdr_len = 16;
2055 }
2056
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2057 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2058 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]2059 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
2060 if (wanted & TX_CON_KAL_SET)
2061 txn->flags |= TX_CON_KAL_SET;
2062 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2063 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2064 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2065 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
2066 if (wanted & TX_CON_CLO_SET)
2067 txn->flags |= TX_CON_CLO_SET;
2068 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2069 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2070 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2071 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2072
2073 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
2074 return;
2075
2076 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
2077 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2078 hdr_val = "Connection: close";
2079 hdr_len = 17;
2080 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2081 hdr_val = "Proxy-Connection: close";
2082 hdr_len = 23;
2083 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2084 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2085 }
2086
2087 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
2088 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2089 hdr_val = "Connection: keep-alive";
2090 hdr_len = 22;
2091 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2092 hdr_val = "Proxy-Connection: keep-alive";
2093 hdr_len = 28;
2094 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2095 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2096 }
2097 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2098}
2099
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2100/* Parse the chunk size at msg->next. Once done, caller should adjust ->next to
2101 * point to the first byte of data after the chunk size, so that we know we can
2102 * forward exactly msg->next bytes. msg->sol contains the exact number of bytes
2103 * forming the chunk size. That way it is always possible to differentiate
2104 * between the start of the body and the start of the data. Return the number
2105 * of byte parsed on success, 0 when some data is missing, <0 on error. Note:
2106 * this function is designed to parse wrapped CRLF at the end of the buffer.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2107 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2108static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2109{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2110 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2111 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2112 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2113 const char *end = buf->data + buf->size;
2114 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2115 unsigned int chunk = 0;
2116
2117 /* The chunk size is in the following form, though we are only
2118 * interested in the size and CRLF :
2119 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
2120 */
2121 while (1) {
2122 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2123 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2124 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2125 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2126 if (c < 0) /* not a hex digit anymore */
2127 break;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2128 if (unlikely(++ptr >= end))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2129 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]2130 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2131 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2132 chunk = (chunk << 4) + c;
2133 }
2134
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2135 /* empty size not allowed */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2136 if (unlikely(ptr == ptr_old))
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2137 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2138
2139 while (http_is_spht[(unsigned char)*ptr]) {
2140 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2141 ptr = buf->data;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2142 if (unlikely(ptr == stop))
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2143 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2144 }
2145
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2146 /* Up to there, we know that at least one byte is present at *ptr. Check
2147 * for the end of chunk size.
2148 */
2149 while (1) {
2150 if (likely(HTTP_IS_CRLF(*ptr))) {
2151 /* we now have a CR or an LF at ptr */
2152 if (likely(*ptr == '\r')) {
2153 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2154 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2155 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2156 return 0;
2157 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2158
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2159 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2160 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2161 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2162 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2163 /* done */
2164 break;
2165 }
2166 else if (*ptr == ';') {
2167 /* chunk extension, ends at next CRLF */
2168 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2169 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2170 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2171 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2172
2173 while (!HTTP_IS_CRLF(*ptr)) {
2174 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2175 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2176 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2177 return 0;
2178 }
2179 /* we have a CRLF now, loop above */
2180 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2181 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2182 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2183 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2184 }
2185
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2186 /* OK we found our CRLF and now <ptr> points to the next byte, which may
2187 * or may not be present. We save the number of bytes parsed into
2188 * msg->sol.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2189 */
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2190 msg->sol = ptr - ptr_old;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2191 if (unlikely(ptr < ptr_old))
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2192 msg->sol += buf->size;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2193 msg->chunk_len = chunk;
2194 msg->body_len += chunk;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2195 return msg->sol;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2196 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2197 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2198 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2199}
2200
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2201/* This function skips trailers in the buffer associated with HTTP message
2202 * <msg>. The first visited position is msg->next. If the end of the trailers is
2203 * found, the function returns >0. So, the caller can automatically schedul it
2204 * to be forwarded, and switch msg->msg_state to HTTP_MSG_DONE. If not enough
2205 * data are available, the function does not change anything except maybe
2206 * msg->sol if it could parse some lines, and returns zero. If a parse error
2207 * is encountered, the function returns < 0 and does not change anything except
2208 * maybe msg->sol. Note that the message must already be in HTTP_MSG_TRAILERS
2209 * state before calling this function, which implies that all non-trailers data
2210 * have already been scheduled for forwarding, and that msg->next exactly
2211 * matches the length of trailers already parsed and not forwarded. It is also
2212 * important to note that this function is designed to be able to parse wrapped
2213 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2214 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2215static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2216{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2217 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2218
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2219 /* we have msg->next which points to next line. Look for CRLF. But
2220 * first, we reset msg->sol */
2221 msg->sol = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2222 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2223 const char *p1 = NULL, *p2 = NULL;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2224 const char *start = b_ptr(buf, msg->next + msg->sol);
2225 const char *stop = bi_end(buf);
2226 const char *ptr = start;
2227 int bytes = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2228
2229 /* scan current line and stop at LF or CRLF */
2230 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2231 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2232 return 0;
2233
2234 if (*ptr == '\n') {
2235 if (!p1)
2236 p1 = ptr;
2237 p2 = ptr;
2238 break;
2239 }
2240
2241 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2242 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2243 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2244 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2245 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2246 p1 = ptr;
2247 }
2248
2249 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2250 if (ptr >= buf->data + buf->size)
2251 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2252 }
2253
2254 /* after LF; point to beginning of next line */
2255 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2256 if (p2 >= buf->data + buf->size)
2257 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2258
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2259 bytes = p2 - start;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2260 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2261 bytes += buf->size;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2262 msg->sol += bytes;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2263
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2264 /* LF/CRLF at beginning of line => end of trailers at p2.
2265 * Everything was scheduled for forwarding, there's nothing left
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2266 * from this message. */
2267 if (p1 == start)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2268 return 1;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2269
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2270 /* OK, next line then */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2271 }
2272}
2273
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2274/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF or
2275 * a possible LF alone at the end of a chunk. The caller should adjust msg->next
2276 * in order to include this part into the next forwarding phase. Note that the
2277 * caller must ensure that ->p points to the first byte to parse. It returns
2278 * the number of bytes parsed on success, so the caller can set msg_state to
2279 * HTTP_MSG_CHUNK_SIZE. If not enough data are available, the function does not
2280 * change anything and returns zero. If a parse error is encountered, the
2281 * function returns < 0. Note: this function is designed to parse wrapped CRLF
2282 * at the end of the buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2283 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2284static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2285{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2286 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2287 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2288 int bytes;
2289
2290 /* NB: we'll check data availabilty at the end. It's not a
2291 * problem because whatever we match first will be checked
2292 * against the correct length.
2293 */
2294 bytes = 1;
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2295 ptr = b_ptr(buf, msg->next);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2296 if (*ptr == '\r') {
2297 bytes++;
2298 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2299 if (ptr >= buf->data + buf->size)
2300 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2301 }
2302
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2303 if (msg->next + bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2304 return 0;
2305
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2306 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2307 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2308 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2309 }
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2310 return bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2311}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2312
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2313/* Parses a qvalue and returns it multipled by 1000, from 0 to 1000. If the
2314 * value is larger than 1000, it is bound to 1000. The parser consumes up to
2315 * 1 digit, one dot and 3 digits and stops on the first invalid character.
2316 * Unparsable qvalues return 1000 as "q=1.000".
2317 */
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2318int parse_qvalue(const char *qvalue, const char **end)
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2319{
2320 int q = 1000;
2321
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2322 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2323 goto out;
2324 q = (*qvalue++ - '0') * 1000;
2325
2326 if (*qvalue++ != '.')
2327 goto out;
2328
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2329 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2330 goto out;
2331 q += (*qvalue++ - '0') * 100;
2332
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2333 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2334 goto out;
2335 q += (*qvalue++ - '0') * 10;
2336
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2337 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2338 goto out;
2339 q += (*qvalue++ - '0') * 1;
2340 out:
2341 if (q > 1000)
2342 q = 1000;
Willy Tarreau38b3aa52014-04-22 23:32:05 +0200[diff] [blame]2343 if (end)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2344 *end = qvalue;
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2345 return q;
2346}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2347
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2348void 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]2349{
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]2350 struct proxy *fe = strm_fe(s);
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2351 int tmp = TX_CON_WANT_KAL;
2352
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2353 if (!((fe->options2|s->be->options2) & PR_O2_FAKE_KA)) {
2354 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2355 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN)
2356 tmp = TX_CON_WANT_TUN;
2357
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2358 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2359 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2360 tmp = TX_CON_WANT_TUN;
2361 }
2362
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2363 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2364 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL) {
2365 /* option httpclose + server_close => forceclose */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2366 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2367 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2368 tmp = TX_CON_WANT_CLO;
2369 else
2370 tmp = TX_CON_WANT_SCL;
2371 }
2372
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2373 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2374 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL)
2375 tmp = TX_CON_WANT_CLO;
2376
2377 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
2378 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
2379
2380 if (!(txn->flags & TX_HDR_CONN_PRS) &&
2381 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) {
2382 /* parse the Connection header and possibly clean it */
2383 int to_del = 0;
2384 if ((msg->flags & HTTP_MSGF_VER_11) ||
2385 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2386 !((fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2387 to_del |= 2; /* remove "keep-alive" */
2388 if (!(msg->flags & HTTP_MSGF_VER_11))
2389 to_del |= 1; /* remove "close" */
2390 http_parse_connection_header(txn, msg, to_del);
2391 }
2392
2393 /* check if client or config asks for explicit close in KAL/SCL */
2394 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
2395 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
2396 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
2397 (!(msg->flags & HTTP_MSGF_VER_11) && !(txn->flags & TX_HDR_CONN_KAL)) || /* no "connection: k-a" in 1.0 */
2398 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2399 fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2400 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
2401}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2402
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2403/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2404 * processing can continue on next analysers, or zero if it either needs more
2405 * data or wants to immediately abort the request (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2406 * 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]2407 * when it has nothing left to do, and may remove any analyser when it wants to
2408 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2409 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2410int http_wait_for_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2411{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2412 /*
2413 * We will parse the partial (or complete) lines.
2414 * We will check the request syntax, and also join multi-line
2415 * headers. An index of all the lines will be elaborated while
2416 * parsing.
2417 *
2418 * For the parsing, we use a 28 states FSM.
2419 *
2420 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2421 * req->buf->p = beginning of request
2422 * req->buf->p + msg->eoh = end of processed headers / start of current one
2423 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2424 * msg->eol = end of current header or line (LF or CRLF)
2425 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2426 *
2427 * 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]2428 * we will set a few fields (txn->meth, sn->flags/SF_REDIRECTABLE).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2429 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2430 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2431 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2432
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2433 int cur_idx;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2434 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]2435 struct http_txn *txn = s->txn;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2436 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2437 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2438
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2439 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]2440 now_ms, __FUNCTION__,
2441 s,
2442 req,
2443 req->rex, req->wex,
2444 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2445 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2446 req->analysers);
2447
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2448 /* we're speaking HTTP here, so let's speak HTTP to the client */
2449 s->srv_error = http_return_srv_error;
2450
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2451 /* There's a protected area at the end of the buffer for rewriting
2452 * purposes. We don't want to start to parse the request if the
2453 * protected area is affected, because we may have to move processed
2454 * data later, which is much more complicated.
2455 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2456 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Thierry FOURNIER / OZON.IO4cac3592016-07-28 17:19:45 +0200[diff] [blame]2457
2458 /* This point is executed when some data is avalaible for analysis,
2459 * so we log the end of the idle time. */
2460 if (s->logs.t_idle == -1)
2461 s->logs.t_idle = tv_ms_elapsed(&s->logs.tv_accept, &now) - s->logs.t_handshake;
2462
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2463 if (txn->flags & TX_NOT_FIRST) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]2464 if (unlikely(!channel_is_rewritable(req))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2465 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2466 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2467 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2468 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2469 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]2470 req->flags |= CF_WAKE_WRITE;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2471 return 0;
2472 }
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2473 if (unlikely(bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2474 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite))
2475 buffer_slow_realign(req->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2476 }
2477
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2478 /* Note that we have the same problem with the response ; we
2479 * may want to send a redirect, error or anything which requires
2480 * some spare space. So we'll ensure that we have at least
2481 * maxrewrite bytes available in the response buffer before
2482 * processing that one. This will only affect pipelined
2483 * keep-alive requests.
2484 */
2485 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2486 unlikely(!channel_is_rewritable(&s->res) ||
2487 bi_end(s->res.buf) < b_ptr(s->res.buf, txn->rsp.next) ||
2488 bi_end(s->res.buf) > s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)) {
2489 if (s->res.buf->o) {
2490 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]2491 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2492 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2493 channel_dont_connect(req);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2494 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
2495 s->res.flags |= CF_WAKE_WRITE;
2496 s->res.analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2497 return 0;
2498 }
2499 }
2500
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2501 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2502 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2503 }
2504
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2505 /* 1: we might have to print this header in debug mode */
2506 if (unlikely((global.mode & MODE_DEBUG) &&
2507 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]2508 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2509 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2510
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2511 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2512 /* this is a bit complex : in case of error on the request line,
2513 * we know that rq.l is still zero, so we display only the part
2514 * up to the end of the line (truncated by debug_hdr).
2515 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2516 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2517 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2518
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2519 sol += hdr_idx_first_pos(&txn->hdr_idx);
2520 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2521
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2522 while (cur_idx) {
2523 eol = sol + txn->hdr_idx.v[cur_idx].len;
2524 debug_hdr("clihdr", s, sol, eol);
2525 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2526 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2527 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2528 }
2529
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2530
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2531 /*
2532 * Now we quickly check if we have found a full valid request.
2533 * If not so, we check the FD and buffer states before leaving.
2534 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2535 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2536 * requests are checked first. When waiting for a second request
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2537 * on a keep-alive stream, if we encounter and error, close, t/o,
2538 * we note the error in the stream flags but don't set any state.
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2539 * Since the error will be noted there, it will not be counted by
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2540 * process_stream() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2541 * Last, we may increase some tracked counters' http request errors on
2542 * the cases that are deliberately the client's fault. For instance,
2543 * a timeout or connection reset is not counted as an error. However
2544 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2545 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2546
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2547 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2548 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2549 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2550 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2551 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2552 stream_inc_http_req_ctr(s);
2553 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2554 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2555 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2556 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2557
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2558 /* 1: Since we are in header mode, if there's no space
2559 * left for headers, we won't be able to free more
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2560 * later, so the stream will never terminate. We
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2561 * must terminate it now.
2562 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2563 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2564 /* FIXME: check if URI is set and return Status
2565 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2566 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2567 stream_inc_http_req_ctr(s);
2568 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2569 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2570 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2571 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2572 goto return_bad_req;
2573 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2574
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2575 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2576 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2577 if (!(s->flags & SF_ERR_MASK))
2578 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2579
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2580 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2581 goto failed_keep_alive;
2582
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2583 if (sess->fe->options & PR_O_IGNORE_PRB)
2584 goto failed_keep_alive;
2585
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2586 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2587 if (msg->err_pos >= 0) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2588 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]2589 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2590 }
2591
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2592 txn->status = 400;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2593 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2594 http_reply_and_close(s, txn->status, NULL);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2595 req->analysers &= AN_FLT_END;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2596 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2597 proxy_inc_fe_req_ctr(sess->fe);
2598 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2599 if (sess->listener->counters)
2600 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2601
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2602 if (!(s->flags & SF_FINST_MASK))
2603 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2604 return 0;
2605 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2606
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2607 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2608 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]2609 if (!(s->flags & SF_ERR_MASK))
2610 s->flags |= SF_ERR_CLITO;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2611
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2612 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2613 goto failed_keep_alive;
2614
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2615 if (sess->fe->options & PR_O_IGNORE_PRB)
2616 goto failed_keep_alive;
2617
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2618 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2619 if (msg->err_pos >= 0) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2620 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]2621 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2622 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2623 txn->status = 408;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2624 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2625 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_408));
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2626 req->analysers &= AN_FLT_END;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2627
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2628 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2629 proxy_inc_fe_req_ctr(sess->fe);
2630 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2631 if (sess->listener->counters)
2632 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2633
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2634 if (!(s->flags & SF_FINST_MASK))
2635 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2636 return 0;
2637 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2638
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2639 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2640 else if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2641 if (!(s->flags & SF_ERR_MASK))
2642 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2643
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2644 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2645 goto failed_keep_alive;
2646
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2647 if (sess->fe->options & PR_O_IGNORE_PRB)
2648 goto failed_keep_alive;
2649
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2650 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2651 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]2652 txn->status = 400;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2653 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2654 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2655 req->analysers &= AN_FLT_END;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2656 stream_inc_http_err_ctr(s);
2657 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2658 proxy_inc_fe_req_ctr(sess->fe);
2659 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2660 if (sess->listener->counters)
2661 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2662
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2663 if (!(s->flags & SF_FINST_MASK))
2664 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2665 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2666 }
2667
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2668 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2669 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2670 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2671#ifdef TCP_QUICKACK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2672 if (sess->listener->options & LI_O_NOQUICKACK && req->buf->i &&
2673 objt_conn(sess->origin) && conn_ctrl_ready(__objt_conn(sess->origin))) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2674 /* We need more data, we have to re-enable quick-ack in case we
2675 * previously disabled it, otherwise we might cause the client
2676 * to delay next data.
2677 */
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2678 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]2679 }
2680#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2681
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2682 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2683 /* If the client starts to talk, let's fall back to
2684 * request timeout processing.
2685 */
2686 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2687 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2688 }
2689
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2690 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2691 if (!tick_isset(req->analyse_exp)) {
2692 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2693 (txn->flags & TX_WAIT_NEXT_RQ) &&
2694 tick_isset(s->be->timeout.httpka))
2695 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2696 else
2697 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2698 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2699
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2700 /* we're not ready yet */
2701 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2702
2703 failed_keep_alive:
2704 /* Here we process low-level errors for keep-alive requests. In
2705 * short, if the request is not the first one and it experiences
2706 * a timeout, read error or shutdown, we just silently close so
2707 * that the client can try again.
2708 */
2709 txn->status = 0;
2710 msg->msg_state = HTTP_MSG_RQBEFORE;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2711 req->analysers &= AN_FLT_END;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2712 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]2713 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2714 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2715 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2716 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2717 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2718
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2719 /* OK now we have a complete HTTP request with indexed headers. Let's
2720 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2721 * 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]2722 * 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]2723 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2724 * byte after the last LF. msg->sov points to the first byte of data.
2725 * msg->eol cannot be trusted because it may have been left uninitialized
2726 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2727 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2728
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2729 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2730 proxy_inc_fe_req_ctr(sess->fe); /* one more valid request for this FE */
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2731
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2732 if (txn->flags & TX_WAIT_NEXT_RQ) {
2733 /* kill the pending keep-alive timeout */
2734 txn->flags &= ~TX_WAIT_NEXT_RQ;
2735 req->analyse_exp = TICK_ETERNITY;
2736 }
2737
2738
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2739 /* Maybe we found in invalid header name while we were configured not
2740 * to block on that, so we have to capture it now.
2741 */
2742 if (unlikely(msg->err_pos >= 0))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2743 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]2744
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2745 /*
2746 * 1: identify the method
2747 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2748 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2749
2750 /* we can make use of server redirect on GET and HEAD */
2751 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2752 s->flags |= SF_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2753
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2754 /*
2755 * 2: check if the URI matches the monitor_uri.
2756 * We have to do this for every request which gets in, because
2757 * the monitor-uri is defined by the frontend.
2758 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2759 if (unlikely((sess->fe->monitor_uri_len != 0) &&
2760 (sess->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2761 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2762 sess->fe->monitor_uri,
2763 sess->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2764 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2765 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2766 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2767 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2768
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2769 s->flags |= SF_MONITOR;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2770 sess->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2771
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2772 /* Check if we want to fail this monitor request or not */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2773 list_for_each_entry(cond, &sess->fe->mon_fail_cond, list) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]2774 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]2775
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2776 ret = acl_pass(ret);
2777 if (cond->pol == ACL_COND_UNLESS)
2778 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2779
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2780 if (ret) {
2781 /* we fail this request, let's return 503 service unavail */
2782 txn->status = 503;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2783 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_503));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2784 if (!(s->flags & SF_ERR_MASK))
2785 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2786 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2787 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2788 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2789
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2790 /* nothing to fail, let's reply normaly */
2791 txn->status = 200;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2792 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_200));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2793 if (!(s->flags & SF_ERR_MASK))
2794 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2795 goto return_prx_cond;
2796 }
2797
2798 /*
2799 * 3: Maybe we have to copy the original REQURI for the logs ?
2800 * Note: we cannot log anymore if the request has been
2801 * classified as invalid.
2802 */
2803 if (unlikely(s->logs.logwait & LW_REQ)) {
2804 /* we have a complete HTTP request that we must log */
2805 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2806 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2807
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2808 if (urilen >= REQURI_LEN)
2809 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2810 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2811 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2812
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2813 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2814 s->do_log(s);
2815 } else {
2816 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2817 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2818 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2819
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]2820 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
2821 * exactly one digit "." one digit. This check may be disabled using
2822 * option accept-invalid-http-request.
2823 */
2824 if (!(sess->fe->options2 & PR_O2_REQBUG_OK)) {
2825 if (msg->sl.rq.v_l != 8) {
2826 msg->err_pos = msg->sl.rq.v;
2827 goto return_bad_req;
2828 }
2829
2830 if (req->buf->p[msg->sl.rq.v + 4] != '/' ||
2831 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 5]) ||
2832 req->buf->p[msg->sl.rq.v + 6] != '.' ||
2833 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 7])) {
2834 msg->err_pos = msg->sl.rq.v + 4;
2835 goto return_bad_req;
2836 }
2837 }
Willy Tarreau13317662015-05-01 13:47:08 +0200[diff] [blame]2838 else {
2839 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
2840 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
2841 goto return_bad_req;
2842 }
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]2843
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2844 /* ... and check if the request is HTTP/1.1 or above */
2845 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2846 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2847 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2848 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2849 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2850
2851 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2852 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]2853
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2854 /* if the frontend has "option http-use-proxy-header", we'll check if
2855 * we have what looks like a proxied connection instead of a connection,
2856 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2857 * Note that this is *not* RFC-compliant, however browsers and proxies
2858 * happen to do that despite being non-standard :-(
2859 * We consider that a request not beginning with either '/' or '*' is
2860 * a proxied connection, which covers both "scheme://location" and
2861 * CONNECT ip:port.
2862 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2863 if ((sess->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2864 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2865 txn->flags |= TX_USE_PX_CONN;
2866
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2867 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2868 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2869
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2870 /* 5: we may need to capture headers */
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]2871 if (unlikely((s->logs.logwait & LW_REQHDR) && s->req_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2872 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]2873 s->req_cap, sess->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2874
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2875 /* 6: determine the transfer-length according to RFC2616 #4.4, updated
2876 * by RFC7230#3.3.3 :
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2877 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2878 * The length of a message body is determined by one of the following
2879 * (in order of precedence):
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2880 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2881 * 1. Any response to a HEAD request and any response with a 1xx
2882 * (Informational), 204 (No Content), or 304 (Not Modified) status
2883 * code is always terminated by the first empty line after the
2884 * header fields, regardless of the header fields present in the
2885 * message, and thus cannot contain a message body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2886 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2887 * 2. Any 2xx (Successful) response to a CONNECT request implies that
2888 * the connection will become a tunnel immediately after the empty
2889 * line that concludes the header fields. A client MUST ignore any
2890 * Content-Length or Transfer-Encoding header fields received in
2891 * such a message.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2892 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2893 * 3. If a Transfer-Encoding header field is present and the chunked
2894 * transfer coding (Section 4.1) is the final encoding, the message
2895 * body length is determined by reading and decoding the chunked
2896 * data until the transfer coding indicates the data is complete.
2897 *
2898 * If a Transfer-Encoding header field is present in a response and
2899 * the chunked transfer coding is not the final encoding, the
2900 * message body length is determined by reading the connection until
2901 * it is closed by the server. If a Transfer-Encoding header field
2902 * is present in a request and the chunked transfer coding is not
2903 * the final encoding, the message body length cannot be determined
2904 * reliably; the server MUST respond with the 400 (Bad Request)
2905 * status code and then close the connection.
2906 *
2907 * If a message is received with both a Transfer-Encoding and a
2908 * Content-Length header field, the Transfer-Encoding overrides the
2909 * Content-Length. Such a message might indicate an attempt to
2910 * perform request smuggling (Section 9.5) or response splitting
2911 * (Section 9.4) and ought to be handled as an error. A sender MUST
2912 * remove the received Content-Length field prior to forwarding such
2913 * a message downstream.
2914 *
2915 * 4. If a message is received without Transfer-Encoding and with
2916 * either multiple Content-Length header fields having differing
2917 * field-values or a single Content-Length header field having an
2918 * invalid value, then the message framing is invalid and the
2919 * recipient MUST treat it as an unrecoverable error. If this is a
2920 * request message, the server MUST respond with a 400 (Bad Request)
2921 * status code and then close the connection. If this is a response
2922 * message received by a proxy, the proxy MUST close the connection
2923 * to the server, discard the received response, and send a 502 (Bad
2924 * Gateway) response to the client. If this is a response message
2925 * received by a user agent, the user agent MUST close the
2926 * connection to the server and discard the received response.
2927 *
2928 * 5. If a valid Content-Length header field is present without
2929 * Transfer-Encoding, its decimal value defines the expected message
2930 * body length in octets. If the sender closes the connection or
2931 * the recipient times out before the indicated number of octets are
2932 * received, the recipient MUST consider the message to be
2933 * incomplete and close the connection.
2934 *
2935 * 6. If this is a request message and none of the above are true, then
2936 * the message body length is zero (no message body is present).
2937 *
2938 * 7. Otherwise, this is a response message without a declared message
2939 * body length, so the message body length is determined by the
2940 * number of octets received prior to the server closing the
2941 * connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2942 */
2943
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2944 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2945 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]2946 while (http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2947 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2948 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2949 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]2950 /* chunked not last, return badreq */
2951 goto return_bad_req;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2952 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2953 }
2954
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]2955 /* Chunked requests must have their content-length removed */
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2956 ctx.idx = 0;
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]2957 if (msg->flags & HTTP_MSGF_TE_CHNK) {
2958 while (http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx))
2959 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2960 }
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]2961 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]2962 signed long long cl;
2963
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2964 if (!ctx.vlen) {
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;
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 (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
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; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2972 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2973
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2974 if (cl < 0) {
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;
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 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2980 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2981 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2982 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2983
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2984 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2985 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2986 }
2987
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]2988 /* even bodyless requests have a known length */
2989 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2990
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]2991 /* Until set to anything else, the connection mode is set as Keep-Alive. It will
2992 * only change if both the request and the config reference something else.
2993 * Option httpclose by itself sets tunnel mode where headers are mangled.
2994 * However, if another mode is set, it will affect it (eg: server-close/
2995 * keep-alive + httpclose = close). Note that we avoid to redo the same work
2996 * if FE and BE have the same settings (common). The method consists in
2997 * checking if options changed between the two calls (implying that either
2998 * one is non-null, or one of them is non-null and we are there for the first
2999 * time.
3000 */
3001 if (!(txn->flags & TX_HDR_CONN_PRS) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3002 ((sess->fe->options & PR_O_HTTP_MODE) != (s->be->options & PR_O_HTTP_MODE)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]3003 http_adjust_conn_mode(s, txn, msg);
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]3004
Willy Tarreau9fbe18e2015-05-01 22:42:08 +0200[diff] [blame]3005 /* we may have to wait for the request's body */
3006 if ((s->be->options & PR_O_WREQ_BODY) &&
3007 (msg->body_len || (msg->flags & HTTP_MSGF_TE_CHNK)))
3008 req->analysers |= AN_REQ_HTTP_BODY;
3009
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3010 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3011 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3012 req->analyse_exp = TICK_ETERNITY;
3013 return 1;
3014
3015 return_bad_req:
3016 /* We centralize bad requests processing here */
3017 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3018 /* we detected a parsing error. We want to archive this request
3019 * in the dedicated proxy area for later troubleshooting.
3020 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3021 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]3022 }
3023
3024 txn->req.msg_state = HTTP_MSG_ERROR;
3025 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]3026 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]3027
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3028 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]3029 if (sess->listener->counters)
3030 sess->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3031
3032 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]3033 if (!(s->flags & SF_ERR_MASK))
3034 s->flags |= SF_ERR_PRXCOND;
3035 if (!(s->flags & SF_FINST_MASK))
3036 s->flags |= SF_FINST_R;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3037
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]3038 req->analysers &= AN_FLT_END;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3039 req->analyse_exp = TICK_ETERNITY;
3040 return 0;
3041}
3042
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]3043
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3044/* This function prepares an applet to handle the stats. It can deal with the
3045 * "100-continue" expectation, check that admin rules are met for POST requests,
3046 * and program a response message if something was unexpected. It cannot fail
3047 * 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]3048 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3049 * s->target which is supposed to already point to the stats applet. The caller
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3050 * is expected to have already assigned an appctx to the stream.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3051 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3052int http_handle_stats(struct stream *s, struct channel *req)
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3053{
3054 struct stats_admin_rule *stats_admin_rule;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]3055 struct stream_interface *si = &s->si[1];
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3056 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3057 struct http_txn *txn = s->txn;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3058 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3059 struct uri_auth *uri_auth = s->be->uri_auth;
3060 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3061 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3062
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3063 appctx = si_appctx(si);
3064 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
3065 appctx->st1 = appctx->st2 = 0;
3066 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
3067 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3068 if ((msg->flags & HTTP_MSGF_VER_11) && (s->txn->meth != HTTP_METH_HEAD))
Willy Tarreauaf3cf702014-04-22 22:19:53 +0200[diff] [blame]3069 appctx->ctx.stats.flags |= STAT_CHUNKED;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3070
3071 uri = msg->chn->buf->p + msg->sl.rq.u;
3072 lookup = uri + uri_auth->uri_len;
3073
3074 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
3075 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3076 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3077 break;
3078 }
3079 }
3080
3081 if (uri_auth->refresh) {
3082 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
3083 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3084 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3085 break;
3086 }
3087 }
3088 }
3089
3090 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
3091 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3092 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3093 break;
3094 }
3095 }
3096
Willy Tarreau1e62df92016-01-11 18:57:53 +0100[diff] [blame]3097 for (h = lookup; h <= uri + msg->sl.rq.u_l - 6; h++) {
3098 if (memcmp(h, ";typed", 6) == 0) {
3099 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
3100 appctx->ctx.stats.flags |= STAT_FMT_TYPED;
3101 break;
3102 }
3103 }
3104
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3105 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3106 if (memcmp(h, ";st=", 4) == 0) {
3107 int i;
3108 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3109 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3110 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
3111 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3112 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3113 break;
3114 }
3115 }
3116 break;
3117 }
3118 }
3119
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3120 appctx->ctx.stats.scope_str = 0;
3121 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3122 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3123 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
3124 int itx = 0;
3125 const char *h2;
3126 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
3127 const char *err;
3128
3129 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
3130 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3131 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3132 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
3133 itx++;
3134 h++;
3135 }
3136
3137 if (itx > STAT_SCOPE_TXT_MAXLEN)
3138 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3139 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3140
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3141 /* 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]3142 memcpy(scope_txt, h2, itx);
3143 scope_txt[itx] = '\0';
3144 err = invalid_char(scope_txt);
3145 if (err) {
3146 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3147 appctx->ctx.stats.scope_str = 0;
3148 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3149 }
3150 break;
3151 }
3152 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3153
3154 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3155 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3156 int ret = 1;
3157
3158 if (stats_admin_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3159 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]3160 ret = acl_pass(ret);
3161 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3162 ret = !ret;
3163 }
3164
3165 if (ret) {
3166 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3167 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3168 break;
3169 }
3170 }
3171
3172 /* Was the status page requested with a POST ? */
Willy Tarreaub8cdf522015-05-29 01:09:15 +0200[diff] [blame]3173 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3174 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreaucfe7fdd2014-04-26 22:08:32 +0200[diff] [blame]3175 /* we'll need the request body, possibly after sending 100-continue */
Willy Tarreaub8cdf522015-05-29 01:09:15 +0200[diff] [blame]3176 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE)
3177 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3178 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3179 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3180 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3181 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
3182 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]3183 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3184 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3185 else {
3186 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3187 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3188 }
3189
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3190 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3191 return 1;
3192}
3193
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3194/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
3195 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
3196 */
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3197void inet_set_tos(int fd, const struct sockaddr_storage *from, int tos)
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3198{
3199#ifdef IP_TOS
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3200 if (from->ss_family == AF_INET)
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3201 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3202#endif
3203#ifdef IPV6_TCLASS
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3204 if (from->ss_family == AF_INET6) {
3205 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)from)->sin6_addr))
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3206 /* v4-mapped addresses need IP_TOS */
3207 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3208 else
3209 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
3210 }
3211#endif
3212}
3213
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3214int http_transform_header_str(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3215 const char* name, unsigned int name_len,
3216 const char *str, struct my_regex *re,
3217 int action)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3218{
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3219 struct hdr_ctx ctx;
3220 char *buf = msg->chn->buf->p;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3221 struct hdr_idx *idx = &s->txn->hdr_idx;
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3222 int (*http_find_hdr_func)(const char *name, int len, char *sol,
3223 struct hdr_idx *idx, struct hdr_ctx *ctx);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3224 struct chunk *output = get_trash_chunk();
3225
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3226 ctx.idx = 0;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3227
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3228 /* Choose the header browsing function. */
3229 switch (action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3230 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3231 http_find_hdr_func = http_find_header2;
3232 break;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3233 case ACT_HTTP_REPLACE_HDR:
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3234 http_find_hdr_func = http_find_full_header2;
3235 break;
3236 default: /* impossible */
3237 return -1;
3238 }
3239
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3240 while (http_find_hdr_func(name, name_len, buf, idx, &ctx)) {
3241 struct hdr_idx_elem *hdr = idx->v + ctx.idx;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3242 int delta;
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3243 char *val = ctx.line + ctx.val;
3244 char* val_end = val + ctx.vlen;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3245
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3246 if (!regex_exec_match2(re, val, val_end-val, MAX_MATCH, pmatch, 0))
3247 continue;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3248
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3249 output->len = exp_replace(output->str, output->size, val, str, pmatch);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3250 if (output->len == -1)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3251 return -1;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3252
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3253 delta = buffer_replace2(msg->chn->buf, val, val_end, output->str, output->len);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3254
3255 hdr->len += delta;
3256 http_msg_move_end(msg, delta);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3257
3258 /* Adjust the length of the current value of the index. */
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3259 ctx.vlen += delta;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3260 }
3261
3262 return 0;
3263}
3264
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3265static int http_transform_header(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3266 const char* name, unsigned int name_len,
3267 struct list *fmt, struct my_regex *re,
3268 int action)
3269{
3270 struct chunk *replace = get_trash_chunk();
3271
3272 replace->len = build_logline(s, replace->str, replace->size, fmt);
3273 if (replace->len >= replace->size - 1)
3274 return -1;
3275
3276 return http_transform_header_str(s, msg, name, name_len, replace->str, re, action);
3277}
3278
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3279/* Executes the http-request rules <rules> for stream <s>, proxy <px> and
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3280 * transaction <txn>. Returns the verdict of the first rule that prevents
3281 * further processing of the request (auth, deny, ...), and defaults to
3282 * HTTP_RULE_RES_STOP if it executed all rules or stopped on an allow, or
3283 * HTTP_RULE_RES_CONT if the last rule was reached. It may set the TX_CLTARPIT
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3284 * on txn->flags if it encounters a tarpit rule. If <deny_status> is not NULL
3285 * and a deny/tarpit rule is matched, it will be filled with this rule's deny
3286 * status.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3287 */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3288enum rule_result
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3289http_req_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s, int *deny_status)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3290{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3291 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3292 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3293 struct connection *cli_conn;
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]3294 struct act_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3295 struct hdr_ctx ctx;
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3296 const char *auth_realm;
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3297 int act_flags = 0;
Thierry Fournier4b788f72016-06-01 13:35:36 +0200[diff] [blame]3298 int len;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3299
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3300 /* If "the current_rule_list" match the executed rule list, we are in
3301 * resume condition. If a resume is needed it is always in the action
3302 * and never in the ACL or converters. In this case, we initialise the
3303 * current rule, and go to the action execution point.
3304 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3305 if (s->current_rule) {
3306 rule = s->current_rule;
3307 s->current_rule = NULL;
3308 if (s->current_rule_list == rules)
3309 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3310 }
3311 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3312
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3313 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3314
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3315 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3316 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3317 int ret;
3318
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3319 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]3320 ret = acl_pass(ret);
3321
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3322 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3323 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3324
3325 if (!ret) /* condition not matched */
3326 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3327 }
3328
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3329 act_flags |= ACT_FLAG_FIRST;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3330resume_execution:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3331 switch (rule->action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3332 case ACT_ACTION_ALLOW:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3333 return HTTP_RULE_RES_STOP;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3334
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3335 case ACT_ACTION_DENY:
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3336 if (deny_status)
3337 *deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3338 return HTTP_RULE_RES_DENY;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3339
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3340 case ACT_HTTP_REQ_TARPIT:
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3341 txn->flags |= TX_CLTARPIT;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3342 if (deny_status)
3343 *deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3344 return HTTP_RULE_RES_DENY;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3345
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3346 case ACT_HTTP_REQ_AUTH:
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3347 /* Auth might be performed on regular http-req rules as well as on stats */
3348 auth_realm = rule->arg.auth.realm;
3349 if (!auth_realm) {
3350 if (px->uri_auth && rules == &px->uri_auth->http_req_rules)
3351 auth_realm = STATS_DEFAULT_REALM;
3352 else
3353 auth_realm = px->id;
3354 }
3355 /* send 401/407 depending on whether we use a proxy or not. We still
3356 * count one error, because normal browsing won't significantly
3357 * increase the counter but brute force attempts will.
3358 */
3359 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, auth_realm);
3360 txn->status = (txn->flags & TX_USE_PX_CONN) ? 407 : 401;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]3361 http_reply_and_close(s, txn->status, &trash);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3362 stream_inc_http_err_ctr(s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3363 return HTTP_RULE_RES_ABRT;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3364
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3365 case ACT_HTTP_REDIR:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3366 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3367 return HTTP_RULE_RES_BADREQ;
3368 return HTTP_RULE_RES_DONE;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3369
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3370 case ACT_HTTP_SET_NICE:
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3371 s->task->nice = rule->arg.nice;
3372 break;
3373
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3374 case ACT_HTTP_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3375 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3376 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]3377 break;
3378
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3379 case ACT_HTTP_SET_MARK:
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3380#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3381 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3382 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]3383#endif
3384 break;
3385
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3386 case ACT_HTTP_SET_LOGL:
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3387 s->logs.level = rule->arg.loglevel;
3388 break;
3389
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3390 case ACT_HTTP_REPLACE_HDR:
3391 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3392 if (http_transform_header(s, &txn->req, rule->arg.hdr_add.name,
3393 rule->arg.hdr_add.name_len,
3394 &rule->arg.hdr_add.fmt,
3395 &rule->arg.hdr_add.re, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3396 return HTTP_RULE_RES_BADREQ;
3397 break;
3398
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3399 case ACT_HTTP_DEL_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3400 ctx.idx = 0;
3401 /* remove all occurrences of the header */
3402 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3403 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3404 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3405 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3406 break;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3407
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3408 case ACT_HTTP_SET_HDR:
3409 case ACT_HTTP_ADD_HDR:
Thierry Fournier4b788f72016-06-01 13:35:36 +0200[diff] [blame]3410 /* The scope of the trash buffer must be limited to this function. The
3411 * build_logline() function can execute a lot of other function which
3412 * can use the trash buffer. So for limiting the scope of this global
3413 * buffer, we build first the header value using build_logline, and
3414 * after we store the header name.
3415 */
3416 len = rule->arg.hdr_add.name_len + 2,
3417 len += build_logline(s, trash.str + len, trash.size - len, &rule->arg.hdr_add.fmt);
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3418 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
Thierry Fournier4b788f72016-06-01 13:35:36 +0200[diff] [blame]3419 trash.str[rule->arg.hdr_add.name_len] = ':';
3420 trash.str[rule->arg.hdr_add.name_len + 1] = ' ';
3421 trash.len = len;
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3422
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3423 if (rule->action == ACT_HTTP_SET_HDR) {
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3424 /* remove all occurrences of the header */
3425 ctx.idx = 0;
3426 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3427 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3428 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
3429 }
3430 }
3431
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3432 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3433 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3434
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3435 case ACT_HTTP_DEL_ACL:
3436 case ACT_HTTP_DEL_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3437 struct pat_ref *ref;
3438 char *key;
3439 int len;
3440
3441 /* collect reference */
3442 ref = pat_ref_lookup(rule->arg.map.ref);
3443 if (!ref)
3444 continue;
3445
3446 /* collect key */
3447 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3448 key = trash.str;
3449 key[len] = '\0';
3450
3451 /* perform update */
3452 /* returned code: 1=ok, 0=ko */
3453 pat_ref_delete(ref, key);
3454
3455 break;
3456 }
3457
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3458 case ACT_HTTP_ADD_ACL: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3459 struct pat_ref *ref;
3460 char *key;
3461 struct chunk *trash_key;
3462 int len;
3463
3464 trash_key = get_trash_chunk();
3465
3466 /* collect reference */
3467 ref = pat_ref_lookup(rule->arg.map.ref);
3468 if (!ref)
3469 continue;
3470
3471 /* collect key */
3472 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3473 key = trash_key->str;
3474 key[len] = '\0';
3475
3476 /* perform update */
3477 /* add entry only if it does not already exist */
3478 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3479 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3480
3481 break;
3482 }
3483
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3484 case ACT_HTTP_SET_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3485 struct pat_ref *ref;
3486 char *key, *value;
3487 struct chunk *trash_key, *trash_value;
3488 int len;
3489
3490 trash_key = get_trash_chunk();
3491 trash_value = get_trash_chunk();
3492
3493 /* collect reference */
3494 ref = pat_ref_lookup(rule->arg.map.ref);
3495 if (!ref)
3496 continue;
3497
3498 /* collect key */
3499 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3500 key = trash_key->str;
3501 key[len] = '\0';
3502
3503 /* collect value */
3504 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3505 value = trash_value->str;
3506 value[len] = '\0';
3507
3508 /* perform update */
3509 if (pat_ref_find_elt(ref, key) != NULL)
3510 /* update entry if it exists */
3511 pat_ref_set(ref, key, value, NULL);
3512 else
3513 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3514 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3515
3516 break;
3517 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3518
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3519 case ACT_CUSTOM:
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3520 if ((px->options & PR_O_ABRT_CLOSE) && (s->req.flags & (CF_SHUTR|CF_READ_NULL|CF_READ_ERROR)))
3521 act_flags |= ACT_FLAG_FINAL;
Willy Tarreau39458682015-09-27 10:33:15 +0200[diff] [blame]3522
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3523 switch (rule->action_ptr(rule, px, s->sess, s, act_flags)) {
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3524 case ACT_RET_ERR:
3525 case ACT_RET_CONT:
3526 break;
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3527 case ACT_RET_STOP:
3528 return HTTP_RULE_RES_DONE;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3529 case ACT_RET_YIELD:
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3530 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3531 return HTTP_RULE_RES_YIELD;
3532 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3533 break;
3534
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3535 case ACT_ACTION_TRK_SC0 ... ACT_ACTION_TRK_SCMAX:
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3536 /* Note: only the first valid tracking parameter of each
3537 * applies.
3538 */
3539
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3540 if (stkctr_entry(&s->stkctr[http_trk_idx(rule->action)]) == NULL) {
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3541 struct stktable *t;
3542 struct stksess *ts;
3543 struct stktable_key *key;
3544 void *ptr;
3545
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]3546 t = rule->arg.trk_ctr.table.t;
3547 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]3548
3549 if (key && (ts = stktable_get_entry(t, key))) {
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3550 stream_track_stkctr(&s->stkctr[http_trk_idx(rule->action)], t, ts);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3551
3552 /* let's count a new HTTP request as it's the first time we do it */
3553 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT);
3554 if (ptr)
3555 stktable_data_cast(ptr, http_req_cnt)++;
3556
3557 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE);
3558 if (ptr)
3559 update_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
3560 t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1);
3561
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3562 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_CONTENT);
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3563 if (sess->fe != s->be)
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3564 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_BACKEND);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3565 }
3566 }
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3567 break;
3568
Thierry FOURNIER22e49012015-08-05 19:13:48 +0200[diff] [blame]3569 /* other flags exists, but normaly, they never be matched. */
3570 default:
3571 break;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3572 }
3573 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3574
3575 /* we reached the end of the rules, nothing to report */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3576 return HTTP_RULE_RES_CONT;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3577}
3578
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3579
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3580/* Executes the http-response rules <rules> for stream <s> and proxy <px>. It
3581 * returns one of 5 possible statuses: HTTP_RULE_RES_CONT, HTTP_RULE_RES_STOP,
3582 * HTTP_RULE_RES_DONE, HTTP_RULE_RES_YIELD, or HTTP_RULE_RES_BADREQ. If *CONT
3583 * is returned, the process can continue the evaluation of next rule list. If
3584 * *STOP or *DONE is returned, the process must stop the evaluation. If *BADREQ
3585 * is returned, it means the operation could not be processed and a server error
3586 * must be returned. It may set the TX_SVDENY on txn->flags if it encounters a
3587 * deny rule. If *YIELD is returned, the caller must call again the function
3588 * with the same context.
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3589 */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3590static enum rule_result
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3591http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s)
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3592{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3593 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3594 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3595 struct connection *cli_conn;
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]3596 struct act_rule *rule;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3597 struct hdr_ctx ctx;
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3598 int act_flags = 0;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3599
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3600 /* If "the current_rule_list" match the executed rule list, we are in
3601 * resume condition. If a resume is needed it is always in the action
3602 * and never in the ACL or converters. In this case, we initialise the
3603 * current rule, and go to the action execution point.
3604 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3605 if (s->current_rule) {
3606 rule = s->current_rule;
3607 s->current_rule = NULL;
3608 if (s->current_rule_list == rules)
3609 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3610 }
3611 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3612
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3613 list_for_each_entry(rule, rules, list) {
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3614
3615 /* check optional condition */
3616 if (rule->cond) {
3617 int ret;
3618
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3619 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]3620 ret = acl_pass(ret);
3621
3622 if (rule->cond->pol == ACL_COND_UNLESS)
3623 ret = !ret;
3624
3625 if (!ret) /* condition not matched */
3626 continue;
3627 }
3628
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3629 act_flags |= ACT_FLAG_FIRST;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3630resume_execution:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3631 switch (rule->action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3632 case ACT_ACTION_ALLOW:
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3633 return HTTP_RULE_RES_STOP; /* "allow" rules are OK */
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3634
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3635 case ACT_ACTION_DENY:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3636 txn->flags |= TX_SVDENY;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3637 return HTTP_RULE_RES_STOP;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3638
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3639 case ACT_HTTP_SET_NICE:
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3640 s->task->nice = rule->arg.nice;
3641 break;
3642
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3643 case ACT_HTTP_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3644 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3645 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]3646 break;
3647
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3648 case ACT_HTTP_SET_MARK:
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3649#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3650 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3651 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]3652#endif
3653 break;
3654
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3655 case ACT_HTTP_SET_LOGL:
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3656 s->logs.level = rule->arg.loglevel;
3657 break;
3658
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3659 case ACT_HTTP_REPLACE_HDR:
3660 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3661 if (http_transform_header(s, &txn->rsp, rule->arg.hdr_add.name,
3662 rule->arg.hdr_add.name_len,
3663 &rule->arg.hdr_add.fmt,
3664 &rule->arg.hdr_add.re, rule->action))
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3665 return HTTP_RULE_RES_STOP; /* note: we should report an error here */
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3666 break;
3667
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3668 case ACT_HTTP_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3669 ctx.idx = 0;
3670 /* remove all occurrences of the header */
3671 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3672 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3673 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3674 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3675 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3676
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3677 case ACT_HTTP_SET_HDR:
3678 case ACT_HTTP_ADD_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3679 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3680 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3681 trash.len = rule->arg.hdr_add.name_len;
3682 trash.str[trash.len++] = ':';
3683 trash.str[trash.len++] = ' ';
3684 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]3685
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3686 if (rule->action == ACT_HTTP_SET_HDR) {
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3687 /* remove all occurrences of the header */
3688 ctx.idx = 0;
3689 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3690 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3691 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3692 }
3693 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3694 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3695 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3696
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3697 case ACT_HTTP_DEL_ACL:
3698 case ACT_HTTP_DEL_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3699 struct pat_ref *ref;
3700 char *key;
3701 int len;
3702
3703 /* collect reference */
3704 ref = pat_ref_lookup(rule->arg.map.ref);
3705 if (!ref)
3706 continue;
3707
3708 /* collect key */
3709 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3710 key = trash.str;
3711 key[len] = '\0';
3712
3713 /* perform update */
3714 /* returned code: 1=ok, 0=ko */
3715 pat_ref_delete(ref, key);
3716
3717 break;
3718 }
3719
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3720 case ACT_HTTP_ADD_ACL: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3721 struct pat_ref *ref;
3722 char *key;
3723 struct chunk *trash_key;
3724 int len;
3725
3726 trash_key = get_trash_chunk();
3727
3728 /* collect reference */
3729 ref = pat_ref_lookup(rule->arg.map.ref);
3730 if (!ref)
3731 continue;
3732
3733 /* collect key */
3734 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3735 key = trash_key->str;
3736 key[len] = '\0';
3737
3738 /* perform update */
3739 /* check if the entry already exists */
3740 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3741 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3742
3743 break;
3744 }
3745
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3746 case ACT_HTTP_SET_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3747 struct pat_ref *ref;
3748 char *key, *value;
3749 struct chunk *trash_key, *trash_value;
3750 int len;
3751
3752 trash_key = get_trash_chunk();
3753 trash_value = get_trash_chunk();
3754
3755 /* collect reference */
3756 ref = pat_ref_lookup(rule->arg.map.ref);
3757 if (!ref)
3758 continue;
3759
3760 /* collect key */
3761 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3762 key = trash_key->str;
3763 key[len] = '\0';
3764
3765 /* collect value */
3766 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3767 value = trash_value->str;
3768 value[len] = '\0';
3769
3770 /* perform update */
3771 if (pat_ref_find_elt(ref, key) != NULL)
3772 /* update entry if it exists */
3773 pat_ref_set(ref, key, value, NULL);
3774 else
3775 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3776 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3777
3778 break;
3779 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3780
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3781 case ACT_HTTP_REDIR:
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3782 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3783 return HTTP_RULE_RES_BADREQ;
3784 return HTTP_RULE_RES_DONE;
3785
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3786 case ACT_ACTION_TRK_SC0 ... ACT_ACTION_TRK_SCMAX:
3787 /* Note: only the first valid tracking parameter of each
3788 * applies.
3789 */
3790
3791 if (stkctr_entry(&s->stkctr[http_trk_idx(rule->action)]) == NULL) {
3792 struct stktable *t;
3793 struct stksess *ts;
3794 struct stktable_key *key;
3795 void *ptr;
3796
3797 t = rule->arg.trk_ctr.table.t;
3798 key = stktable_fetch_key(t, s->be, sess, s, SMP_OPT_DIR_RES | SMP_OPT_FINAL, rule->arg.trk_ctr.expr, NULL);
3799
3800 if (key && (ts = stktable_get_entry(t, key))) {
3801 stream_track_stkctr(&s->stkctr[http_trk_idx(rule->action)], t, ts);
3802
3803 /* let's count a new HTTP request as it's the first time we do it */
3804 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT);
3805 if (ptr)
3806 stktable_data_cast(ptr, http_req_cnt)++;
3807
3808 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE);
3809 if (ptr)
3810 update_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
3811 t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1);
3812
3813 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_CONTENT);
3814 if (sess->fe != s->be)
3815 stkctr_set_flags(&s->stkctr[http_trk_idx(rule->action)], STKCTR_TRACK_BACKEND);
3816
3817 /* When the client triggers a 4xx from the server, it's most often due
3818 * to a missing object or permission. These events should be tracked
3819 * because if they happen often, it may indicate a brute force or a
3820 * vulnerability scan. Normally this is done when receiving the response
3821 * but here we're tracking after this ought to have been done so we have
3822 * to do it on purpose.
3823 */
Willy Tarreau3146a4c2016-07-26 15:22:33 +0200[diff] [blame]3824 if ((unsigned)(txn->status - 400) < 100) {
3825 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_ERR_CNT);
3826 if (ptr)
3827 stktable_data_cast(ptr, http_err_cnt)++;
3828
3829 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_ERR_RATE);
3830 if (ptr)
3831 update_freq_ctr_period(&stktable_data_cast(ptr, http_err_rate),
3832 t->data_arg[STKTABLE_DT_HTTP_ERR_RATE].u, 1);
3833 }
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]3834 }
3835 }
3836 break;
3837
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3838 case ACT_CUSTOM:
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3839 if ((px->options & PR_O_ABRT_CLOSE) && (s->req.flags & (CF_SHUTR|CF_READ_NULL|CF_READ_ERROR)))
3840 act_flags |= ACT_FLAG_FINAL;
Willy Tarreau39458682015-09-27 10:33:15 +0200[diff] [blame]3841
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3842 switch (rule->action_ptr(rule, px, s->sess, s, act_flags)) {
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3843 case ACT_RET_ERR:
3844 case ACT_RET_CONT:
3845 break;
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3846 case ACT_RET_STOP:
3847 return HTTP_RULE_RES_STOP;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3848 case ACT_RET_YIELD:
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3849 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3850 return HTTP_RULE_RES_YIELD;
3851 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3852 break;
3853
Thierry FOURNIER22e49012015-08-05 19:13:48 +0200[diff] [blame]3854 /* other flags exists, but normaly, they never be matched. */
3855 default:
3856 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3857 }
3858 }
3859
3860 /* we reached the end of the rules, nothing to report */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3861 return HTTP_RULE_RES_CONT;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3862}
3863
3864
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3865/* Perform an HTTP redirect based on the information in <rule>. The function
3866 * returns non-zero on success, or zero in case of a, irrecoverable error such
3867 * as too large a request to build a valid response.
3868 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3869static 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]3870{
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3871 struct http_msg *req = &txn->req;
3872 struct http_msg *res = &txn->rsp;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3873 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3874 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3875
3876 /* build redirect message */
3877 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3878 case 308:
3879 msg_fmt = HTTP_308;
3880 break;
3881 case 307:
3882 msg_fmt = HTTP_307;
3883 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3884 case 303:
3885 msg_fmt = HTTP_303;
3886 break;
3887 case 301:
3888 msg_fmt = HTTP_301;
3889 break;
3890 case 302:
3891 default:
3892 msg_fmt = HTTP_302;
3893 break;
3894 }
3895
3896 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3897 return 0;
3898
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3899 location = trash.str + trash.len;
3900
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3901 switch(rule->type) {
3902 case REDIRECT_TYPE_SCHEME: {
3903 const char *path;
3904 const char *host;
3905 struct hdr_ctx ctx;
3906 int pathlen;
3907 int hostlen;
3908
3909 host = "";
3910 hostlen = 0;
3911 ctx.idx = 0;
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3912 if (http_find_header2("Host", 4, req->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3913 host = ctx.line + ctx.val;
3914 hostlen = ctx.vlen;
3915 }
3916
3917 path = http_get_path(txn);
3918 /* build message using path */
3919 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3920 pathlen = req->sl.rq.u_l + (req->chn->buf->p + req->sl.rq.u) - path;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3921 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3922 int qs = 0;
3923 while (qs < pathlen) {
3924 if (path[qs] == '?') {
3925 pathlen = qs;
3926 break;
3927 }
3928 qs++;
3929 }
3930 }
3931 } else {
3932 path = "/";
3933 pathlen = 1;
3934 }
3935
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3936 if (rule->rdr_str) { /* this is an old "redirect" rule */
3937 /* check if we can add scheme + "://" + host + path */
3938 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3939 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3940
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3941 /* add scheme */
3942 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3943 trash.len += rule->rdr_len;
3944 }
3945 else {
3946 /* add scheme with executing log format */
3947 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]3948
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3949 /* check if we can add scheme + "://" + host + path */
3950 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
3951 return 0;
3952 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3953 /* add "://" */
3954 memcpy(trash.str + trash.len, "://", 3);
3955 trash.len += 3;
3956
3957 /* add host */
3958 memcpy(trash.str + trash.len, host, hostlen);
3959 trash.len += hostlen;
3960
3961 /* add path */
3962 memcpy(trash.str + trash.len, path, pathlen);
3963 trash.len += pathlen;
3964
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3965 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3966 if (trash.len && trash.str[trash.len - 1] != '/' &&
3967 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3968 if (trash.len > trash.size - 5)
3969 return 0;
3970 trash.str[trash.len] = '/';
3971 trash.len++;
3972 }
3973
3974 break;
3975 }
3976 case REDIRECT_TYPE_PREFIX: {
3977 const char *path;
3978 int pathlen;
3979
3980 path = http_get_path(txn);
3981 /* build message using path */
3982 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3983 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]3984 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3985 int qs = 0;
3986 while (qs < pathlen) {
3987 if (path[qs] == '?') {
3988 pathlen = qs;
3989 break;
3990 }
3991 qs++;
3992 }
3993 }
3994 } else {
3995 path = "/";
3996 pathlen = 1;
3997 }
3998
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3999 if (rule->rdr_str) { /* this is an old "redirect" rule */
4000 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
4001 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4002
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4003 /* add prefix. Note that if prefix == "/", we don't want to
4004 * add anything, otherwise it makes it hard for the user to
4005 * configure a self-redirection.
4006 */
4007 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
4008 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
4009 trash.len += rule->rdr_len;
4010 }
4011 }
4012 else {
4013 /* add prefix with executing log format */
4014 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
4015
4016 /* Check length */
4017 if (trash.len + pathlen > trash.size - 4)
4018 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4019 }
4020
4021 /* add path */
4022 memcpy(trash.str + trash.len, path, pathlen);
4023 trash.len += pathlen;
4024
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4025 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4026 if (trash.len && trash.str[trash.len - 1] != '/' &&
4027 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
4028 if (trash.len > trash.size - 5)
4029 return 0;
4030 trash.str[trash.len] = '/';
4031 trash.len++;
4032 }
4033
4034 break;
4035 }
4036 case REDIRECT_TYPE_LOCATION:
4037 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4038 if (rule->rdr_str) { /* this is an old "redirect" rule */
4039 if (trash.len + rule->rdr_len > trash.size - 4)
4040 return 0;
4041
4042 /* add location */
4043 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
4044 trash.len += rule->rdr_len;
4045 }
4046 else {
4047 /* add location with executing log format */
4048 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]4049
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4050 /* Check left length */
4051 if (trash.len > trash.size - 4)
4052 return 0;
4053 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4054 break;
4055 }
4056
4057 if (rule->cookie_len) {
4058 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
4059 trash.len += 14;
4060 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
4061 trash.len += rule->cookie_len;
4062 memcpy(trash.str + trash.len, "\r\n", 2);
4063 trash.len += 2;
4064 }
4065
4066 /* add end of headers and the keep-alive/close status.
4067 * We may choose to set keep-alive if the Location begins
4068 * with a slash, because the client will come back to the
4069 * same server.
4070 */
4071 txn->status = rule->code;
4072 /* let's log the request time */
4073 s->logs.tv_request = now;
4074
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4075 if (*location == '/' &&
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4076 (req->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau2de8a502015-05-28 17:23:54 +0200[diff] [blame]4077 ((!(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]4078 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
4079 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
4080 /* keep-alive possible */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4081 if (!(req->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4082 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4083 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
4084 trash.len += 30;
4085 } else {
4086 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
4087 trash.len += 24;
4088 }
4089 }
4090 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
4091 trash.len += 4;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]4092 FLT_STRM_CB(s, flt_http_reply(s, txn->status, &trash));
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4093 bo_inject(res->chn, trash.str, trash.len);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4094 /* "eat" the request */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4095 bi_fast_delete(req->chn->buf, req->sov);
4096 req->next -= req->sov;
4097 req->sov = 0;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4098 s->req.analysers = AN_REQ_HTTP_XFER_BODY | (s->req.analysers & AN_FLT_END);
4099 s->res.analysers = AN_RES_HTTP_XFER_BODY | (s->req.analysers & AN_FLT_END);
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4100 req->msg_state = HTTP_MSG_CLOSED;
4101 res->msg_state = HTTP_MSG_DONE;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]4102 /* Trim any possible response */
4103 res->chn->buf->i = 0;
4104 res->next = res->sov = 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4105 } else {
4106 /* keep-alive not possible */
4107 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4108 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
4109 trash.len += 29;
4110 } else {
4111 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
4112 trash.len += 23;
4113 }
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4114 http_reply_and_close(s, txn->status, &trash);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4115 req->chn->analysers &= AN_FLT_END;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4116 }
4117
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4118 if (!(s->flags & SF_ERR_MASK))
4119 s->flags |= SF_ERR_LOCAL;
4120 if (!(s->flags & SF_FINST_MASK))
4121 s->flags |= SF_FINST_R;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4122
4123 return 1;
4124}
4125
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4126/* This stream analyser runs all HTTP request processing which is common to
4127 * frontends and backends, which means blocking ACLs, filters, connection-close,
4128 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4129 * 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]4130 * either needs more data or wants to immediately abort the request (eg: deny,
4131 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4132 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4133int 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]4134{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4135 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4136 struct http_txn *txn = s->txn;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4137 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4138 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]4139 struct cond_wordlist *wl;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4140 enum rule_result verdict;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4141 int deny_status = HTTP_ERR_403;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4142
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4143 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4144 /* we need more data */
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4145 goto return_prx_yield;
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4146 }
4147
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4148 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]4149 now_ms, __FUNCTION__,
4150 s,
4151 req,
4152 req->rex, req->wex,
4153 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4154 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4155 req->analysers);
4156
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4157 /* just in case we have some per-backend tracking */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4158 stream_inc_be_http_req_ctr(s);
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4159
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4160 /* evaluate http-request rules */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4161 if (!LIST_ISEMPTY(&px->http_req_rules)) {
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4162 verdict = http_req_get_intercept_rule(px, &px->http_req_rules, s, &deny_status);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]4163
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4164 switch (verdict) {
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4165 case HTTP_RULE_RES_YIELD: /* some data miss, call the function later. */
4166 goto return_prx_yield;
4167
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4168 case HTTP_RULE_RES_CONT:
4169 case HTTP_RULE_RES_STOP: /* nothing to do */
4170 break;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4171
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4172 case HTTP_RULE_RES_DENY: /* deny or tarpit */
4173 if (txn->flags & TX_CLTARPIT)
4174 goto tarpit;
4175 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4176
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4177 case HTTP_RULE_RES_ABRT: /* abort request, response already sent. Eg: auth */
4178 goto return_prx_cond;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4179
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4180 case HTTP_RULE_RES_DONE: /* OK, but terminate request processing (eg: redirect) */
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4181 goto done;
4182
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4183 case HTTP_RULE_RES_BADREQ: /* failed with a bad request */
4184 goto return_bad_req;
4185 }
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4186 }
4187
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4188 /* OK at this stage, we know that the request was accepted according to
4189 * the http-request rules, we can check for the stats. Note that the
4190 * URI is detected *before* the req* rules in order not to be affected
4191 * by a possible reqrep, while they are processed *after* so that a
4192 * reqdeny can still block them. This clearly needs to change in 1.6!
4193 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4194 if (stats_check_uri(&s->si[1], txn, px)) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4195 s->target = &http_stats_applet.obj_type;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4196 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target)))) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4197 txn->status = 500;
4198 s->logs.tv_request = now;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4199 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]4200
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4201 if (!(s->flags & SF_ERR_MASK))
4202 s->flags |= SF_ERR_RESOURCE;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4203 goto return_prx_cond;
4204 }
4205
4206 /* parse the whole stats request and extract the relevant information */
4207 http_handle_stats(s, req);
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4208 verdict = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s, &deny_status);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4209 /* not all actions implemented: deny, allow, auth */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4210
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4211 if (verdict == HTTP_RULE_RES_DENY) /* stats http-request deny */
4212 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4213
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4214 if (verdict == HTTP_RULE_RES_ABRT) /* stats auth / stats http-request auth */
4215 goto return_prx_cond;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]4216 }
4217
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4218 /* evaluate the req* rules except reqadd */
4219 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]4220 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4221 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4222
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4223 if (txn->flags & TX_CLDENY)
4224 goto deny;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]4225
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4226 if (txn->flags & TX_CLTARPIT)
4227 goto tarpit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4228 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4229
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4230 /* add request headers from the rule sets in the same order */
4231 list_for_each_entry(wl, &px->req_add, list) {
4232 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4233 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]4234 ret = acl_pass(ret);
4235 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
4236 ret = !ret;
4237 if (!ret)
4238 continue;
4239 }
4240
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4241 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4242 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]4243 }
4244
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4245
4246 /* Proceed with the stats now. */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]4247 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]4248 /* process the stats request now */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4249 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
4250 sess->fe->fe_counters.intercepted_req++;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4251
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4252 if (!(s->flags & SF_ERR_MASK)) // this is not really an error but it is
4253 s->flags |= SF_ERR_LOCAL; // to mark that it comes from the proxy
4254 if (!(s->flags & SF_FINST_MASK))
4255 s->flags |= SF_FINST_R;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4256
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4257 /* 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]4258 req->analysers &= (AN_REQ_HTTP_BODY | AN_FLT_HTTP_HDRS | AN_FLT_END);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4259 req->analysers &= ~AN_FLT_XFER_DATA;
4260 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4261 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4262 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4263
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4264 /* check whether we have some ACLs set to redirect this request */
4265 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4266 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4267 int ret;
4268
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4269 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]4270 ret = acl_pass(ret);
4271 if (rule->cond->pol == ACL_COND_UNLESS)
4272 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4273 if (!ret)
4274 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4275 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4276 if (!http_apply_redirect_rule(rule, s, txn))
4277 goto return_bad_req;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4278 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4279 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4280
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4281 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
4282 * If this happens, then the data will not come immediately, so we must
4283 * send all what we have without waiting. Note that due to the small gain
4284 * 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]4285 * 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]4286 * itself once used.
4287 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4288 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4289
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4290 done: /* done with this analyser, continue with next ones that the calling
4291 * points will have set, if any.
4292 */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4293 req->analyse_exp = TICK_ETERNITY;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4294 done_without_exp: /* done with this analyser, but dont reset the analyse_exp. */
4295 req->analysers &= ~an_bit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4296 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4297
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4298 tarpit:
4299 /* When a connection is tarpitted, we use the tarpit timeout,
4300 * which may be the same as the connect timeout if unspecified.
4301 * If unset, then set it to zero because we really want it to
4302 * eventually expire. We build the tarpit as an analyser.
4303 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4304 channel_erase(&s->req);
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4305
4306 /* wipe the request out so that we can drop the connection early
4307 * if the client closes first.
4308 */
4309 channel_dont_connect(req);
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]4310
4311 /* Allow cookie logging
4312 */
4313 if (s->be->cookie_name || sess->fe->capture_name)
4314 manage_client_side_cookies(s, req);
4315
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4316 req->analysers &= AN_FLT_END; /* remove switching rules etc... */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4317 req->analysers |= AN_REQ_HTTP_TARPIT;
4318 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
4319 if (!req->analyse_exp)
4320 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4321 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4322 sess->fe->fe_counters.denied_req++;
4323 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4324 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4325 if (sess->listener->counters)
4326 sess->listener->counters->denied_req++;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4327 goto done_without_exp;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4328
4329 deny: /* this request was blocked (denied) */
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]4330
4331 /* Allow cookie logging
4332 */
4333 if (s->be->cookie_name || sess->fe->capture_name)
4334 manage_client_side_cookies(s, req);
4335
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4336 txn->flags |= TX_CLDENY;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4337 txn->status = http_err_codes[deny_status];
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4338 s->logs.tv_request = now;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4339 http_reply_and_close(s, txn->status, http_error_message(s, deny_status));
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4340 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4341 sess->fe->fe_counters.denied_req++;
4342 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4343 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4344 if (sess->listener->counters)
4345 sess->listener->counters->denied_req++;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4346 goto return_prx_cond;
4347
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4348 return_bad_req:
4349 /* We centralize bad requests processing here */
4350 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
4351 /* we detected a parsing error. We want to archive this request
4352 * in the dedicated proxy area for later troubleshooting.
4353 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4354 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]4355 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4356
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4357 txn->req.msg_state = HTTP_MSG_ERROR;
4358 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4359 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]4360
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4361 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4362 if (sess->listener->counters)
4363 sess->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4364
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4365 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4366 if (!(s->flags & SF_ERR_MASK))
4367 s->flags |= SF_ERR_PRXCOND;
4368 if (!(s->flags & SF_FINST_MASK))
4369 s->flags |= SF_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]4370
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4371 req->analysers &= AN_FLT_END;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4372 req->analyse_exp = TICK_ETERNITY;
4373 return 0;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4374
4375 return_prx_yield:
4376 channel_dont_connect(req);
4377 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4378}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4379
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4380/* This function performs all the processing enabled for the current request.
4381 * It returns 1 if the processing can continue on next analysers, or zero if it
4382 * needs more data, encounters an error, or wants to immediately abort the
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4383 * request. It relies on buffers flags, and updates s->req.analysers.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4384 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4385int http_process_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4386{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4387 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4388 struct http_txn *txn = s->txn;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4389 struct http_msg *msg = &txn->req;
Willy Tarreauee335e62015-04-21 18:15:13 +0200[diff] [blame]4390 struct connection *cli_conn = objt_conn(strm_sess(s)->origin);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4391
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4392 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4393 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4394 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4395 return 0;
4396 }
4397
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4398 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]4399 now_ms, __FUNCTION__,
4400 s,
4401 req,
4402 req->rex, req->wex,
4403 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4404 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4405 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4406
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4407 /*
4408 * Right now, we know that we have processed the entire headers
4409 * and that unwanted requests have been filtered out. We can do
4410 * whatever we want with the remaining request. Also, now we
4411 * may have separate values for ->fe, ->be.
4412 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4413
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4414 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4415 * If HTTP PROXY is set we simply get remote server address parsing
4416 * incoming request. Note that this requires that a connection is
4417 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4418 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4419 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SF_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4420 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4421 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4422
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]4423 /* Note that for now we don't reuse existing proxy connections */
Willy Tarreau973a5422015-08-05 21:47:23 +0200[diff] [blame]4424 if (unlikely((conn = si_alloc_conn(&s->si[1])) == NULL)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4425 txn->req.msg_state = HTTP_MSG_ERROR;
4426 txn->status = 500;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4427 req->analysers &= AN_FLT_END;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4428 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_500));
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4429
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4430 if (!(s->flags & SF_ERR_MASK))
4431 s->flags |= SF_ERR_RESOURCE;
4432 if (!(s->flags & SF_FINST_MASK))
4433 s->flags |= SF_FINST_R;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4434
4435 return 0;
4436 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4437
4438 path = http_get_path(txn);
4439 url2sa(req->buf->p + msg->sl.rq.u,
4440 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]4441 &conn->addr.to, NULL);
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4442 /* if the path was found, we have to remove everything between
4443 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
4444 * found, we need to replace from req->buf->p + msg->sl.rq.u for
4445 * u_l characters by a single "/".
4446 */
4447 if (path) {
4448 char *cur_ptr = req->buf->p;
4449 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4450 int delta;
4451
4452 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
4453 http_msg_move_end(&txn->req, delta);
4454 cur_end += delta;
4455 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4456 goto return_bad_req;
4457 }
4458 else {
4459 char *cur_ptr = req->buf->p;
4460 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4461 int delta;
4462
4463 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
4464 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
4465 http_msg_move_end(&txn->req, delta);
4466 cur_end += delta;
4467 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4468 goto return_bad_req;
4469 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4470 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4471
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4472 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4473 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4474 * Note that doing so might move headers in the request, but
4475 * the fields will stay coherent and the URI will not move.
4476 * This should only be performed in the backend.
4477 */
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]4478 if (s->be->cookie_name || sess->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4479 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]4480
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4481 /* add unique-id if "header-unique-id" is specified */
4482
Thierry Fournierf4011dd2016-03-29 17:23:51 +0200[diff] [blame]4483 if (!LIST_ISEMPTY(&sess->fe->format_unique_id) && !s->unique_id) {
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4484 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
4485 goto return_bad_req;
4486 s->unique_id[0] = '\0';
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4487 build_logline(s, s->unique_id, UNIQUEID_LEN, &sess->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4488 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4489
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4490 if (sess->fe->header_unique_id && s->unique_id) {
4491 chunk_printf(&trash, "%s: %s", sess->fe->header_unique_id, s->unique_id);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4492 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4493 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4494 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]4495 goto return_bad_req;
4496 }
4497
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4498 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4499 * 9: add X-Forwarded-For if either the frontend or the backend
4500 * asks for it.
4501 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4502 if ((sess->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4503 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4504 if (!((sess->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
4505 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : sess->fe->fwdfor_hdr_name,
4506 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]4507 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4508 /* The header is set to be added only if none is present
4509 * and we found it, so don't do anything.
4510 */
4511 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4512 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4513 /* Add an X-Forwarded-For header unless the source IP is
4514 * in the 'except' network range.
4515 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4516 if ((!sess->fe->except_mask.s_addr ||
4517 (((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr & sess->fe->except_mask.s_addr)
4518 != sess->fe->except_net.s_addr) &&
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4519 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4520 (((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]4521 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4522 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4523 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4524 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4525
4526 /* Note: we rely on the backend to get the header name to be used for
4527 * x-forwarded-for, because the header is really meant for the backends.
4528 * However, if the backend did not specify any option, we have to rely
4529 * on the frontend's header name.
4530 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4531 if (s->be->fwdfor_hdr_len) {
4532 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4533 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4534 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4535 len = sess->fe->fwdfor_hdr_len;
4536 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4537 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4538 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]4539
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4540 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]4541 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4542 }
4543 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4544 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4545 /* FIXME: for the sake of completeness, we should also support
4546 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4547 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4548 int len;
4549 char pn[INET6_ADDRSTRLEN];
4550 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4551 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4552 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4553
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4554 /* Note: we rely on the backend to get the header name to be used for
4555 * x-forwarded-for, because the header is really meant for the backends.
4556 * However, if the backend did not specify any option, we have to rely
4557 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4558 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4559 if (s->be->fwdfor_hdr_len) {
4560 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4561 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4562 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4563 len = sess->fe->fwdfor_hdr_len;
4564 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4565 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4566 len += snprintf(trash.str + len, trash.size - len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4567
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4568 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]4569 goto return_bad_req;
4570 }
4571 }
4572
4573 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4574 * 10: add X-Original-To if either the frontend or the backend
4575 * asks for it.
4576 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4577 if ((sess->fe->options | s->be->options) & PR_O_ORGTO) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4578
4579 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4580 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4581 /* Add an X-Original-To header unless the destination IP is
4582 * in the 'except' network range.
4583 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4584 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4585
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4586 if (cli_conn->addr.to.ss_family == AF_INET &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4587 ((!sess->fe->except_mask_to.s_addr ||
4588 (((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr.s_addr & sess->fe->except_mask_to.s_addr)
4589 != sess->fe->except_to.s_addr) &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4590 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4591 (((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]4592 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4593 int len;
4594 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4595 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4596
4597 /* Note: we rely on the backend to get the header name to be used for
4598 * x-original-to, because the header is really meant for the backends.
4599 * However, if the backend did not specify any option, we have to rely
4600 * on the frontend's header name.
4601 */
4602 if (s->be->orgto_hdr_len) {
4603 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4604 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4605 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4606 len = sess->fe->orgto_hdr_len;
4607 memcpy(trash.str, sess->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4608 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4609 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]4610
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4611 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]4612 goto return_bad_req;
4613 }
4614 }
4615 }
4616
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4617 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
4618 * If an "Upgrade" token is found, the header is left untouched in order not to have
4619 * to deal with some servers bugs : some of them fail an Upgrade if anything but
4620 * "Upgrade" is present in the Connection header.
4621 */
4622 if (!(txn->flags & TX_HDR_CONN_UPG) &&
4623 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4624 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4625 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4626 unsigned int want_flags = 0;
4627
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4628 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4629 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4630 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4631 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4632 !((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4633 want_flags |= TX_CON_CLO_SET;
4634 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4635 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4636 ((sess->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4637 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4638 ((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4639 want_flags |= TX_CON_KAL_SET;
4640 }
4641
4642 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4643 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4644 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4645
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4646
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4647 /* If we have no server assigned yet and we're balancing on url_param
4648 * with a POST request, we may be interested in checking the body for
4649 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4650 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4651 if (!(s->flags & (SF_ASSIGNED|SF_DIRECT)) &&
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4652 s->txn->meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4653 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4654 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4655 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4656 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4657
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4658 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4659 req->analysers &= ~AN_FLT_XFER_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4660 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4661#ifdef TCP_QUICKACK
4662 /* We expect some data from the client. Unless we know for sure
4663 * we already have a full request, we have to re-enable quick-ack
4664 * in case we previously disabled it, otherwise we might cause
4665 * the client to delay further data.
4666 */
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4667 if ((sess->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]4668 cli_conn && conn_ctrl_ready(cli_conn) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4669 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4670 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4671 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4672#endif
4673 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4674
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4675 /*************************************************************
4676 * OK, that's finished for the headers. We have done what we *
4677 * could. Let's switch to the DATA state. *
4678 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4679 req->analyse_exp = TICK_ETERNITY;
4680 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4681
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4682 /* if the server closes the connection, we want to immediately react
4683 * and close the socket to save packets and syscalls.
4684 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4685 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4686 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4687
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4688 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4689 /* OK let's go on with the BODY now */
4690 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4691
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4692 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4693 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4694 /* we detected a parsing error. We want to archive this request
4695 * in the dedicated proxy area for later troubleshooting.
4696 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4697 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]4698 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4699
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4700 txn->req.msg_state = HTTP_MSG_ERROR;
4701 txn->status = 400;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4702 req->analysers &= AN_FLT_END;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4703 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]4704
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4705 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4706 if (sess->listener->counters)
4707 sess->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4708
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4709 if (!(s->flags & SF_ERR_MASK))
4710 s->flags |= SF_ERR_PRXCOND;
4711 if (!(s->flags & SF_FINST_MASK))
4712 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4713 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4714}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4715
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4716/* This function is an analyser which processes the HTTP tarpit. It always
4717 * returns zero, at the beginning because it prevents any other processing
4718 * from occurring, and at the end because it terminates the request.
4719 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4720int http_process_tarpit(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4721{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4722 struct http_txn *txn = s->txn;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4723
4724 /* This connection is being tarpitted. The CLIENT side has
4725 * already set the connect expiration date to the right
4726 * timeout. We just have to check that the client is still
4727 * there and that the timeout has not expired.
4728 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4729 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4730 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4731 !tick_is_expired(req->analyse_exp, now_ms))
4732 return 0;
4733
4734 /* We will set the queue timer to the time spent, just for
4735 * logging purposes. We fake a 500 server error, so that the
4736 * attacker will not suspect his connection has been tarpitted.
4737 * It will not cause trouble to the logs because we can exclude
4738 * the tarpitted connections by filtering on the 'PT' status flags.
4739 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4740 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4741
4742 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4743 if (!(req->flags & CF_READ_ERROR))
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4744 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4745
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4746 req->analysers &= AN_FLT_END;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4747 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4748
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4749 if (!(s->flags & SF_ERR_MASK))
4750 s->flags |= SF_ERR_PRXCOND;
4751 if (!(s->flags & SF_FINST_MASK))
4752 s->flags |= SF_FINST_T;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4753 return 0;
4754}
4755
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4756/* This function is an analyser which waits for the HTTP request body. It waits
4757 * for either the buffer to be full, or the full advertised contents to have
4758 * reached the buffer. It must only be called after the standard HTTP request
4759 * processing has occurred, because it expects the request to be parsed and will
4760 * look for the Expect header. It may send a 100-Continue interim response. It
4761 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
4762 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
4763 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4764 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4765int http_wait_for_request_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4766{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4767 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4768 struct http_txn *txn = s->txn;
4769 struct http_msg *msg = &s->txn->req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4770
4771 /* We have to parse the HTTP request body to find any required data.
4772 * "balance url_param check_post" should have been the only way to get
4773 * into this. We were brought here after HTTP header analysis, so all
4774 * related structures are ready.
4775 */
4776
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4777 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
4778 /* This is the first call */
4779 if (msg->msg_state < HTTP_MSG_BODY)
4780 goto missing_data;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4781
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4782 if (msg->msg_state < HTTP_MSG_100_SENT) {
4783 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4784 * send an HTTP/1.1 100 Continue intermediate response.
4785 */
4786 if (msg->flags & HTTP_MSGF_VER_11) {
4787 struct hdr_ctx ctx;
4788 ctx.idx = 0;
4789 /* Expect is allowed in 1.1, look for it */
4790 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
4791 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4792 bo_inject(&s->res, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4793 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4794 }
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4795 msg->msg_state = HTTP_MSG_100_SENT;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4796 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4797
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4798 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4799 * req->buf->p still points to the beginning of the message. We
4800 * must save the body in msg->next because it survives buffer
4801 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4802 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4803 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4804
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4805 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4806 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4807 else
4808 msg->msg_state = HTTP_MSG_DATA;
4809 }
4810
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4811 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
4812 /* We're in content-length mode, we just have to wait for enough data. */
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4813 if (http_body_bytes(msg) < msg->body_len)
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4814 goto missing_data;
4815
4816 /* OK we have everything we need now */
4817 goto http_end;
4818 }
4819
4820 /* OK here we're parsing a chunked-encoded message */
4821
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4822 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4823 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4824 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4825 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4826 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4827 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4828
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4829 if (!ret)
4830 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4831 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4832 stream_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4833 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4834 }
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]4835 msg->next += ret;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4836 msg->msg_state = msg->chunk_len ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4837 }
4838
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4839 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4840 * We have the first data byte is in msg->sov + msg->sol. We're waiting
4841 * for at least a whole chunk or the whole content length bytes after
4842 * msg->sov + msg->sol.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4843 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4844 if (msg->msg_state == HTTP_MSG_TRAILERS)
4845 goto http_end;
4846
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4847 if (http_body_bytes(msg) >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4848 goto http_end;
4849
4850 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4851 /* we get here if we need to wait for more data. If the buffer is full,
4852 * we have the maximum we can expect.
4853 */
4854 if (buffer_full(req->buf, global.tune.maxrewrite))
4855 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4856
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4857 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4858 txn->status = 408;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4859 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4860
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4861 if (!(s->flags & SF_ERR_MASK))
4862 s->flags |= SF_ERR_CLITO;
4863 if (!(s->flags & SF_FINST_MASK))
4864 s->flags |= SF_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4865 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4866 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4867
4868 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4869 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4870 /* Not enough data. We'll re-use the http-request
4871 * timeout here. Ideally, we should set the timeout
4872 * relative to the accept() date. We just set the
4873 * request timeout once at the beginning of the
4874 * request.
4875 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4876 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4877 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4878 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4879 return 0;
4880 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4881
4882 http_end:
4883 /* The situation will not evolve, so let's give up on the analysis. */
4884 s->logs.tv_request = now; /* update the request timer to reflect full request */
4885 req->analysers &= ~an_bit;
4886 req->analyse_exp = TICK_ETERNITY;
4887 return 1;
4888
4889 return_bad_req: /* let's centralize all bad requests */
4890 txn->req.msg_state = HTTP_MSG_ERROR;
4891 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4892 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4893
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4894 if (!(s->flags & SF_ERR_MASK))
4895 s->flags |= SF_ERR_PRXCOND;
4896 if (!(s->flags & SF_FINST_MASK))
4897 s->flags |= SF_FINST_R;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4898
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4899 return_err_msg:
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4900 req->analysers &= AN_FLT_END;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4901 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4902 if (sess->listener->counters)
4903 sess->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4904 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4905}
4906
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4907/* send a server's name with an outgoing request over an established connection.
4908 * Note: this function is designed to be called once the request has been scheduled
4909 * for being forwarded. This is the reason why it rewinds the buffer before
4910 * proceeding.
4911 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4912int 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]4913
4914 struct hdr_ctx ctx;
4915
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4916 char *hdr_name = be->server_id_hdr_name;
4917 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4918 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4919 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4920 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4921
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4922 ctx.idx = 0;
4923
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]4924 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4925 if (old_o) {
4926 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4927 b_rew(chn->buf, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4928 txn->req.next += old_o;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4929 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4930 }
4931
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4932 old_i = chn->buf->i;
4933 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]4934 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4935 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4936 }
4937
4938 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4939 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4940 memcpy(hdr_val, hdr_name, hdr_name_len);
4941 hdr_val += hdr_name_len;
4942 *hdr_val++ = ':';
4943 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4944 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4945 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]4946
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4947 if (old_o) {
4948 /* If this was a forwarded request, we must readjust the amount of
4949 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4950 * variations. Note that the current state is >= HTTP_MSG_BODY,
4951 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4952 */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4953 old_o += chn->buf->i - old_i;
4954 b_adv(chn->buf, old_o);
4955 txn->req.next -= old_o;
4956 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4957 }
4958
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4959 return 0;
4960}
4961
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4962/* Terminate current transaction and prepare a new one. This is very tricky
4963 * right now but it works.
4964 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4965void http_end_txn_clean_session(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4966{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4967 int prev_status = s->txn->status;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]4968 struct proxy *fe = strm_fe(s);
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]4969 struct proxy *be = s->be;
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]4970 struct connection *srv_conn;
4971 struct server *srv;
Willy Tarreau449d74a2015-08-05 17:16:33 +0200[diff] [blame]4972 unsigned int prev_flags = s->txn->flags;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4973
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4974 /* FIXME: We need a more portable way of releasing a backend's and a
4975 * server's connections. We need a safer way to reinitialize buffer
4976 * flags. We also need a more accurate method for computing per-request
4977 * data.
4978 */
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]4979 srv_conn = objt_conn(s->si[1].end);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4980
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4981 /* unless we're doing keep-alive, we want to quickly close the connection
4982 * to the server.
4983 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4984 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4985 !si_conn_ready(&s->si[1])) {
4986 s->si[1].flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
4987 si_shutr(&s->si[1]);
4988 si_shutw(&s->si[1]);
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4989 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4990
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4991 if (s->flags & SF_BE_ASSIGNED) {
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]4992 be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4993 if (unlikely(s->srv_conn))
4994 sess_change_server(s, NULL);
4995 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4996
4997 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4998 stream_process_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4999
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5000 if (s->txn->status) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5001 int n;
5002
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5003 n = s->txn->status / 100;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5004 if (n < 1 || n > 5)
5005 n = 0;
5006
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5007 if (fe->mode == PR_MODE_HTTP) {
5008 fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5009 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5010 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]5011 (be->mode == PR_MODE_HTTP)) {
5012 be->be_counters.p.http.rsp[n]++;
5013 be->be_counters.p.http.cum_req++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5014 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5015 }
5016
5017 /* don't count other requests' data */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5018 s->logs.bytes_in -= s->req.buf->i;
5019 s->logs.bytes_out -= s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5020
5021 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5022 if (!LIST_ISEMPTY(&fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5023 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5024 (!(fe->options & PR_O_NULLNOLOG) || s->req.total)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5025 s->do_log(s);
5026 }
5027
Willy Tarreaud713bcc2014-06-25 15:36:04 +0200[diff] [blame]5028 /* stop tracking content-based counters */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5029 stream_stop_content_counters(s);
5030 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +0200[diff] [blame]5031
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5032 s->logs.accept_date = date; /* user-visible date for logging */
5033 s->logs.tv_accept = now; /* corrected date for internal use */
Thierry FOURNIER / OZON.IO4cac3592016-07-28 17:19:45 +0200[diff] [blame]5034 s->logs.t_handshake = 0; /* There are no handshake in keep alive connection. */
5035 s->logs.t_idle = -1;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5036 tv_zero(&s->logs.tv_request);
5037 s->logs.t_queue = -1;
5038 s->logs.t_connect = -1;
5039 s->logs.t_data = -1;
5040 s->logs.t_close = 0;
5041 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
5042 s->logs.srv_queue_size = 0; /* we will get this number soon */
5043
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5044 s->logs.bytes_in = s->req.total = s->req.buf->i;
5045 s->logs.bytes_out = s->res.total = s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5046
5047 if (s->pend_pos)
5048 pendconn_free(s->pend_pos);
5049
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5050 if (objt_server(s->target)) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5051 if (s->flags & SF_CURR_SESS) {
5052 s->flags &= ~SF_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5053 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5054 }
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]5055 if (may_dequeue_tasks(objt_server(s->target), be))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5056 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5057 }
5058
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5059 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5060
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5061 /* only release our endpoint if we don't intend to reuse the
5062 * connection.
5063 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5064 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5065 !si_conn_ready(&s->si[1])) {
5066 si_release_endpoint(&s->si[1]);
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5067 srv_conn = NULL;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5068 }
5069
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5070 s->si[1].state = s->si[1].prev_state = SI_ST_INI;
5071 s->si[1].err_type = SI_ET_NONE;
5072 s->si[1].conn_retries = 0; /* used for logging too */
5073 s->si[1].exp = TICK_ETERNITY;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5074 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]5075 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);
5076 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]5077 s->flags &= ~(SF_DIRECT|SF_ASSIGNED|SF_ADDR_SET|SF_BE_ASSIGNED|SF_FORCE_PRST|SF_IGNORE_PRST);
5078 s->flags &= ~(SF_CURR_SESS|SF_REDIRECTABLE|SF_SRV_REUSED);
5079 s->flags &= ~(SF_ERR_MASK|SF_FINST_MASK|SF_REDISP);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]5080
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5081 s->txn->meth = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5082 http_reset_txn(s);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5083 s->txn->flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5084
5085 if (prev_status == 401 || prev_status == 407) {
5086 /* In HTTP keep-alive mode, if we receive a 401, we still have
5087 * a chance of being able to send the visitor again to the same
5088 * server over the same connection. This is required by some
5089 * broken protocols such as NTLM, and anyway whenever there is
5090 * an opportunity for sending the challenge to the proper place,
5091 * it's better to do it (at least it helps with debugging).
5092 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5093 s->txn->flags |= TX_PREFER_LAST;
Willy Tarreaubd99d582015-09-02 10:40:43 +0200[diff] [blame]5094 if (srv_conn)
5095 srv_conn->flags |= CO_FL_PRIVATE;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5096 }
5097
Willy Tarreau53f96852016-02-02 18:50:47 +0100[diff] [blame]5098 /* Never ever allow to reuse a connection from a non-reuse backend */
5099 if (srv_conn && (be->options & PR_O_REUSE_MASK) == PR_O_REUSE_NEVR)
5100 srv_conn->flags |= CO_FL_PRIVATE;
5101
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5102 if (fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5103 s->si[1].flags |= SI_FL_INDEP_STR;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5104
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5105 if (fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5106 s->req.flags |= CF_NEVER_WAIT;
5107 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]5108 }
5109
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5110 /* if the request buffer is not empty, it means we're
5111 * about to process another request, so send pending
5112 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5113 * Just don't do this if the buffer is close to be full,
5114 * because the request will wait for it to flush a little
5115 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5116 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5117 if (s->req.buf->i) {
5118 if (s->res.buf->o &&
5119 !buffer_full(s->res.buf, global.tune.maxrewrite) &&
5120 bi_end(s->res.buf) <= s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)
5121 s->res.flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5122 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5123
Willy Tarreau714ea782015-11-25 20:11:11 +0100[diff] [blame]5124 /* we're removing the analysers, we MUST re-enable events detection.
5125 * We don't enable close on the response channel since it's either
5126 * already closed, or in keep-alive with an idle connection handler.
5127 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5128 channel_auto_read(&s->req);
5129 channel_auto_close(&s->req);
5130 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5131
Willy Tarreau1c59bd52015-11-02 20:20:11 +0100[diff] [blame]5132 /* we're in keep-alive with an idle connection, monitor it if not already done */
5133 if (srv_conn && LIST_ISEMPTY(&srv_conn->list)) {
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5134 srv = objt_server(srv_conn->target);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5135 if (!srv)
5136 si_idle_conn(&s->si[1], NULL);
Willy Tarreau53f96852016-02-02 18:50:47 +0100[diff] [blame]5137 else if (srv_conn->flags & CO_FL_PRIVATE)
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5138 si_idle_conn(&s->si[1], &srv->priv_conns);
Willy Tarreau449d74a2015-08-05 17:16:33 +0200[diff] [blame]5139 else if (prev_flags & TX_NOT_FIRST)
5140 /* note: we check the request, not the connection, but
5141 * this is valid for strategies SAFE and AGGR, and in
5142 * case of ALWS, we don't care anyway.
5143 */
5144 si_idle_conn(&s->si[1], &srv->safe_conns);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5145 else
5146 si_idle_conn(&s->si[1], &srv->idle_conns);
Willy Tarreau4320eaa2015-08-05 11:08:30 +0200[diff] [blame]5147 }
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]5148
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5149 if (HAS_FILTERS(s)) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5150 s->req.analysers &= AN_FLT_END;
5151 s->res.analysers &= AN_FLT_END;
5152 }
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5153 else {
5154 s->req.analysers = strm_li(s) ? strm_li(s)->analysers : 0;
5155 s->res.analysers = 0;
5156 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5157}
5158
5159
5160/* This function updates the request state machine according to the response
5161 * state machine and buffer flags. It returns 1 if it changes anything (flag
5162 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5163 * it is only used to find when a request/response couple is complete. Both
5164 * this function and its equivalent should loop until both return zero. It
5165 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5166 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5167int http_sync_req_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5168{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5169 struct channel *chn = &s->req;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5170 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5171 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5172 unsigned int old_state = txn->req.msg_state;
5173
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5174 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
5175 return 0;
5176
5177 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5178 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5179 * We can shut the read side unless we want to abort_on_close,
5180 * or we have a POST request. The issue with POST requests is
5181 * that some browsers still send a CRLF after the request, and
5182 * this CRLF must be read so that it does not remain in the kernel
5183 * buffers, otherwise a close could cause an RST on some systems
5184 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5185 * Note that if we're using keep-alive on the client side, we'd
5186 * rather poll now and keep the polling enabled for the whole
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5187 * stream's life than enabling/disabling it between each
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5188 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5189 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5190 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5191 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5192 !(s->be->options & PR_O_ABRT_CLOSE) &&
5193 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5194 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5195
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5196 /* if the server closes the connection, we want to immediately react
5197 * and close the socket to save packets and syscalls.
5198 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5199 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5200
Willy Tarreau7f876a12015-11-18 11:59:55 +0100[diff] [blame]5201 /* In any case we've finished parsing the request so we must
5202 * disable Nagle when sending data because 1) we're not going
5203 * to shut this side, and 2) the server is waiting for us to
5204 * send pending data.
5205 */
5206 chn->flags |= CF_NEVER_WAIT;
5207
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5208 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
5209 goto wait_other_side;
5210
5211 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
5212 /* The server has not finished to respond, so we
5213 * don't want to move in order not to upset it.
5214 */
5215 goto wait_other_side;
5216 }
5217
5218 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
5219 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5220 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5221 txn->req.msg_state = HTTP_MSG_TUNNEL;
5222 goto wait_other_side;
5223 }
5224
5225 /* When we get here, it means that both the request and the
5226 * response have finished receiving. Depending on the connection
5227 * mode, we'll have to wait for the last bytes to leave in either
5228 * direction, and sometimes for a close to be effective.
5229 */
5230
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5231 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5232 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5233 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
5234 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5235 }
5236 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5237 /* Option forceclose is set, or either side wants to close,
5238 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5239 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5240 * once both states are CLOSED.
5241 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5242 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5243 channel_shutr_now(chn);
5244 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5245 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5246 }
5247 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5248 /* The last possible modes are keep-alive and tunnel. Tunnel mode
5249 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5250 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5251 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
5252 channel_auto_read(chn);
5253 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5254 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5255 }
5256
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5257 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5258 /* if we've just closed an output, let's switch */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5259 s->si[1].flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5260
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5261 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5262 txn->req.msg_state = HTTP_MSG_CLOSING;
5263 goto http_msg_closing;
5264 }
5265 else {
5266 txn->req.msg_state = HTTP_MSG_CLOSED;
5267 goto http_msg_closed;
5268 }
5269 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5270 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5271 }
5272
5273 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
5274 http_msg_closing:
5275 /* nothing else to forward, just waiting for the output buffer
5276 * to be empty and for the shutw_now to take effect.
5277 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5278 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5279 txn->req.msg_state = HTTP_MSG_CLOSED;
5280 goto http_msg_closed;
5281 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5282 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5283 txn->req.msg_state = HTTP_MSG_ERROR;
5284 goto wait_other_side;
5285 }
5286 }
5287
5288 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
5289 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5290 /* see above in MSG_DONE why we only do this in these states */
5291 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5292 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5293 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]5294 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5295 goto wait_other_side;
5296 }
5297
5298 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5299 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5300}
5301
5302
5303/* This function updates the response state machine according to the request
5304 * state machine and buffer flags. It returns 1 if it changes anything (flag
5305 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5306 * it is only used to find when a request/response couple is complete. Both
5307 * this function and its equivalent should loop until both return zero. It
5308 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5309 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5310int http_sync_res_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5311{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5312 struct channel *chn = &s->res;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5313 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5314 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5315 unsigned int old_state = txn->rsp.msg_state;
5316
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5317 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
5318 return 0;
5319
5320 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
5321 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5322 * still monitor the server connection for a possible close
5323 * while the request is being uploaded, so we don't disable
5324 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5325 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5326 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5327
5328 if (txn->req.msg_state == HTTP_MSG_ERROR)
5329 goto wait_other_side;
5330
5331 if (txn->req.msg_state < HTTP_MSG_DONE) {
5332 /* The client seems to still be sending data, probably
5333 * because we got an error response during an upload.
5334 * We have the choice of either breaking the connection
5335 * or letting it pass through. Let's do the later.
5336 */
5337 goto wait_other_side;
5338 }
5339
5340 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
5341 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5342 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5343 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5344 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5345 goto wait_other_side;
5346 }
5347
5348 /* When we get here, it means that both the request and the
5349 * response have finished receiving. Depending on the connection
5350 * mode, we'll have to wait for the last bytes to leave in either
5351 * direction, and sometimes for a close to be effective.
5352 */
5353
5354 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5355 /* Server-close mode : shut read and wait for the request
5356 * side to close its output buffer. The caller will detect
5357 * when we're in DONE and the other is in CLOSED and will
5358 * catch that for the final cleanup.
5359 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5360 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
5361 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5362 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5363 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5364 /* Option forceclose is set, or either side wants to close,
5365 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5366 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5367 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5368 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5369 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5370 channel_shutr_now(chn);
5371 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5372 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5373 }
5374 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5375 /* The last possible modes are keep-alive and tunnel. Tunnel will
5376 * need to forward remaining data. Keep-alive will need to monitor
5377 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5378 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5379 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5380 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5381 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
5382 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5383 }
5384
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5385 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5386 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5387 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5388 txn->rsp.msg_state = HTTP_MSG_CLOSING;
5389 goto http_msg_closing;
5390 }
5391 else {
5392 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5393 goto http_msg_closed;
5394 }
5395 }
5396 goto wait_other_side;
5397 }
5398
5399 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
5400 http_msg_closing:
5401 /* nothing else to forward, just waiting for the output buffer
5402 * to be empty and for the shutw_now to take effect.
5403 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5404 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5405 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5406 goto http_msg_closed;
5407 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5408 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5409 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5410 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5411 if (objt_server(s->target))
5412 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5413 goto wait_other_side;
5414 }
5415 }
5416
5417 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
5418 http_msg_closed:
5419 /* drop any pending data */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5420 channel_truncate(chn);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5421 channel_auto_close(chn);
5422 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5423 goto wait_other_side;
5424 }
5425
5426 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5427 /* We force the response to leave immediately if we're waiting for the
5428 * other side, since there is no pending shutdown to push it out.
5429 */
5430 if (!channel_is_empty(chn))
5431 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5432 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5433}
5434
5435
5436/* Resync the request and response state machines. Return 1 if either state
5437 * changes.
5438 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5439int http_resync_states(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5440{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5441 struct http_txn *txn = s->txn;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5442 int old_req_state = txn->req.msg_state;
5443 int old_res_state = txn->rsp.msg_state;
5444
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5445 http_sync_req_state(s);
5446 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5447 if (!http_sync_res_state(s))
5448 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5449 if (!http_sync_req_state(s))
5450 break;
5451 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]5452
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5453 /* OK, both state machines agree on a compatible state.
5454 * There are a few cases we're interested in :
5455 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
5456 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
5457 * directions, so let's simply disable both analysers.
5458 * - HTTP_MSG_CLOSED on the response only means we must abort the
5459 * request.
5460 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
5461 * with server-close mode means we've completed one request and we
5462 * must re-initialize the server connection.
5463 */
5464
5465 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
5466 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
5467 (txn->req.msg_state == HTTP_MSG_CLOSED &&
5468 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5469 s->req.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5470 channel_auto_close(&s->req);
5471 channel_auto_read(&s->req);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5472 s->res.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5473 channel_auto_close(&s->res);
5474 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5475 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5476 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5477 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->res.flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]5478 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5479 txn->req.msg_state == HTTP_MSG_ERROR) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5480 s->res.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5481 channel_auto_close(&s->res);
5482 channel_auto_read(&s->res);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5483 s->req.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5484 channel_abort(&s->req);
5485 channel_auto_close(&s->req);
5486 channel_auto_read(&s->req);
5487 channel_truncate(&s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5488 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5489 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
5490 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5491 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5492 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
5493 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
5494 /* server-close/keep-alive: terminate this transaction,
5495 * possibly killing the server connection and reinitialize
Willy Tarreau3de5bd62016-05-02 16:07:07 +0200[diff] [blame]5496 * a fresh-new transaction, but only once we're sure there's
5497 * enough room in the request and response buffer to process
5498 * another request. The request buffer must not hold any
5499 * pending output data and the request buffer must not have
5500 * output data occupying the reserve.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5501 */
Willy Tarreau3de5bd62016-05-02 16:07:07 +0200[diff] [blame]5502 if (s->req.buf->o)
5503 s->req.flags |= CF_WAKE_WRITE;
5504 else if (channel_congested(&s->res))
5505 s->res.flags |= CF_WAKE_WRITE;
5506 else
5507 http_end_txn_clean_session(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5508 }
5509
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5510 return txn->req.msg_state != old_req_state ||
5511 txn->rsp.msg_state != old_res_state;
5512}
5513
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5514/* This function is an analyser which forwards request body (including chunk
5515 * sizes if any). It is called as soon as we must forward, even if we forward
5516 * zero byte. The only situation where it must not be called is when we're in
5517 * tunnel mode and we want to forward till the close. It's used both to forward
5518 * remaining data and to resync after end of body. It expects the msg_state to
5519 * 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]5520 * 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]5521 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5522 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5523 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5524int http_request_forward_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5525{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5526 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5527 struct http_txn *txn = s->txn;
5528 struct http_msg *msg = &s->txn->req;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5529 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5530
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5531 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5532 return 0;
5533
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5534 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]5535 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5536 /* Output closed while we were sending data. We must abort and
5537 * wake the other side up.
5538 */
5539 msg->msg_state = HTTP_MSG_ERROR;
5540 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5541 return 1;
5542 }
5543
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5544 /* Note that we don't have to send 100-continue back because we don't
5545 * need the data to complete our job, and it's up to the server to
5546 * decide whether to return 100, 417 or anything else in return of
5547 * an "Expect: 100-continue" header.
5548 */
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5549 if (msg->msg_state == HTTP_MSG_BODY) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5550 msg->msg_state = ((msg->flags & HTTP_MSGF_TE_CHNK)
5551 ? HTTP_MSG_CHUNK_SIZE
5552 : HTTP_MSG_DATA);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5553
5554 /* TODO/filters: when http-buffer-request option is set or if a
5555 * rule on url_param exists, the first chunk size could be
5556 * already parsed. In that case, msg->next is after the chunk
5557 * size (including the CRLF after the size). So this case should
5558 * be handled to */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5559 }
5560
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5561 /* Some post-connect processing might want us to refrain from starting to
5562 * forward data. Currently, the only reason for this is "balance url_param"
5563 * whichs need to parse/process the request after we've enabled forwarding.
5564 */
5565 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5566 if (!(s->res.flags & CF_READ_ATTACHED)) {
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5567 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +0200[diff] [blame]5568 req->flags |= CF_WAKE_CONNECT;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5569 goto missing_data_or_waiting;
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5570 }
5571 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5572 }
5573
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5574 /* in most states, we should abort in case of early close */
5575 channel_auto_close(req);
5576
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5577 if (req->to_forward) {
5578 /* We can't process the buffer's contents yet */
5579 req->flags |= CF_WAKE_WRITE;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5580 goto missing_data_or_waiting;
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5581 }
5582
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5583 if (msg->msg_state < HTTP_MSG_DONE) {
5584 ret = ((msg->flags & HTTP_MSGF_TE_CHNK)
5585 ? http_msg_forward_chunked_body(s, msg)
5586 : http_msg_forward_body(s, msg));
5587 if (!ret)
5588 goto missing_data_or_waiting;
5589 if (ret < 0)
5590 goto return_bad_req;
5591 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5592
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5593 /* other states, DONE...TUNNEL */
5594 /* we don't want to forward closes on DONE except in tunnel mode. */
5595 if ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5596 channel_dont_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5597
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5598 ret = msg->msg_state;
5599 if (http_resync_states(s)) {
5600 /* some state changes occurred, maybe the analyser
5601 * was disabled too. */
5602 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5603 if (req->flags & CF_SHUTW) {
5604 /* request errors are most likely due to the
5605 * server aborting the transfer. */
5606 goto aborted_xfer;
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5607 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5608 if (msg->err_pos >= 0)
5609 http_capture_bad_message(&sess->fe->invalid_req, s, msg, ret, s->be);
5610 goto return_bad_req;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5611 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5612 return 1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5613 }
5614
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5615 /* If "option abortonclose" is set on the backend, we want to monitor
5616 * the client's connection and forward any shutdown notification to the
5617 * server, which will decide whether to close or to go on processing the
5618 * request. We only do that in tunnel mode, and not in other modes since
5619 * it can be abused to exhaust source ports. */
5620 if (s->be->options & PR_O_ABRT_CLOSE) {
5621 channel_auto_read(req);
5622 if ((req->flags & (CF_SHUTR|CF_READ_NULL)) &&
5623 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN))
5624 s->si[1].flags |= SI_FL_NOLINGER;
5625 channel_auto_close(req);
5626 }
5627 else if (s->txn->meth == HTTP_METH_POST) {
5628 /* POST requests may require to read extra CRLF sent by broken
5629 * browsers and which could cause an RST to be sent upon close
5630 * on some systems (eg: Linux). */
5631 channel_auto_read(req);
5632 }
5633 return 0;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5634
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5635 missing_data_or_waiting:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5636 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5637 if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5638 if (!(s->flags & SF_ERR_MASK))
5639 s->flags |= SF_ERR_CLICL;
5640 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5641 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5642 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5643 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5644 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5645 }
5646
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5647 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5648 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5649 if (objt_server(s->target))
5650 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5651
5652 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5653 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5654
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5655 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5656 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5657 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5658
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5659 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5660 * 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]5661 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5662 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5663 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5664
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5665 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5666 * 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]5667 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5668 * modes are already handled by the stream sock layer. We must not do
5669 * this in content-length mode because it could present the MSG_MORE
5670 * flag with the last block of forwarded data, which would cause an
5671 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5672 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5673 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5674 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5675
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5676 return 0;
5677
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5678 return_bad_req: /* let's centralize all bad requests */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5679 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5680 if (sess->listener->counters)
5681 sess->listener->counters->failed_req++;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5682
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5683 return_bad_req_stats_ok:
5684 txn->req.msg_state = HTTP_MSG_ERROR;
5685 if (txn->status) {
5686 /* Note: we don't send any error if some data were already sent */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5687 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5688 } else {
5689 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5690 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5691 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5692 req->analysers &= AN_FLT_END;
5693 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]5694
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5695 if (!(s->flags & SF_ERR_MASK))
5696 s->flags |= SF_ERR_PRXCOND;
5697 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5698 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5699 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5700 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5701 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5702 }
5703 return 0;
5704
5705 aborted_xfer:
5706 txn->req.msg_state = HTTP_MSG_ERROR;
5707 if (txn->status) {
5708 /* Note: we don't send any error if some data were already sent */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5709 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5710 } else {
5711 txn->status = 502;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5712 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5713 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5714 req->analysers &= AN_FLT_END;
5715 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]5716
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5717 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5718 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5719 if (objt_server(s->target))
5720 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5721
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5722 if (!(s->flags & SF_ERR_MASK))
5723 s->flags |= SF_ERR_SRVCL;
5724 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5725 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5726 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5727 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5728 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5729 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5730 return 0;
5731}
5732
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5733/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5734 * processing can continue on next analysers, or zero if it either needs more
5735 * data or wants to immediately abort the response (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5736 * 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]5737 * when it has nothing left to do, and may remove any analyser when it wants to
5738 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5739 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5740int http_wait_for_response(struct stream *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5741{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5742 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5743 struct http_txn *txn = s->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5744 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5745 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5746 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5747 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5748 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5749
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5750 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]5751 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5752 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5753 rep,
5754 rep->rex, rep->wex,
5755 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5756 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5757 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5758
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5759 /*
5760 * Now parse the partial (or complete) lines.
5761 * We will check the response syntax, and also join multi-line
5762 * headers. An index of all the lines will be elaborated while
5763 * parsing.
5764 *
5765 * For the parsing, we use a 28 states FSM.
5766 *
5767 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5768 * rep->buf->p = beginning of response
5769 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5770 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5771 * msg->eol = end of current header or line (LF or CRLF)
5772 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5773 */
5774
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5775 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5776 /* There's a protected area at the end of the buffer for rewriting
5777 * purposes. We don't want to start to parse the request if the
5778 * protected area is affected, because we may have to move processed
5779 * data later, which is much more complicated.
5780 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5781 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]5782 if (unlikely(!channel_is_rewritable(rep))) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5783 /* some data has still not left the buffer, wake us once that's done */
5784 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5785 goto abort_response;
5786 channel_dont_close(rep);
5787 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5788 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5789 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5790 }
5791
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5792 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5793 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5794 buffer_slow_realign(rep->buf);
5795
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5796 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5797 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5798 }
5799
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5800 /* 1: we might have to print this header in debug mode */
5801 if (unlikely((global.mode & MODE_DEBUG) &&
5802 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]5803 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5804 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5805
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5806 sol = rep->buf->p;
5807 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5808 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5809
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5810 sol += hdr_idx_first_pos(&txn->hdr_idx);
5811 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5812
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5813 while (cur_idx) {
5814 eol = sol + txn->hdr_idx.v[cur_idx].len;
5815 debug_hdr("srvhdr", s, sol, eol);
5816 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5817 cur_idx = txn->hdr_idx.v[cur_idx].next;
5818 }
5819 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5820
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5821 /*
5822 * Now we quickly check if we have found a full valid response.
5823 * If not so, we check the FD and buffer states before leaving.
5824 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5825 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5826 * responses are checked first.
5827 *
5828 * Depending on whether the client is still there or not, we
5829 * may send an error response back or not. Note that normally
5830 * we should only check for HTTP status there, and check I/O
5831 * errors somewhere else.
5832 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5833
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5834 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5835 /* Invalid response */
5836 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5837 /* we detected a parsing error. We want to archive this response
5838 * in the dedicated proxy area for later troubleshooting.
5839 */
5840 hdr_response_bad:
5841 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5842 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]5843
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5844 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5845 if (objt_server(s->target)) {
5846 objt_server(s->target)->counters.failed_resp++;
5847 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5848 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5849 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5850 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5851 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5852 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5853 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5854 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5855 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5856
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5857 if (!(s->flags & SF_ERR_MASK))
5858 s->flags |= SF_ERR_PRXCOND;
5859 if (!(s->flags & SF_FINST_MASK))
5860 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5861
5862 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5863 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5864
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5865 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5866 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5867 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5868 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5869 goto hdr_response_bad;
5870 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5871
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5872 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5873 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5874 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5875 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]5876 else if (txn->flags & TX_NOT_FIRST)
5877 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5878
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5879 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5880 if (objt_server(s->target)) {
5881 objt_server(s->target)->counters.failed_resp++;
5882 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5883 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5884
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5885 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5886 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5887 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5888 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5889 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5890 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5891
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5892 if (!(s->flags & SF_ERR_MASK))
5893 s->flags |= SF_ERR_SRVCL;
5894 if (!(s->flags & SF_FINST_MASK))
5895 s->flags |= SF_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5896 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5897 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5898
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +0200[diff] [blame]5899 /* read timeout : return a 504 to the client. */
5900 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5901 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5902 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]5903
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5904 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5905 if (objt_server(s->target)) {
5906 objt_server(s->target)->counters.failed_resp++;
5907 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5908 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5909
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5910 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5911 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5912 txn->status = 504;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5913 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5914 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5915 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5916
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5917 if (!(s->flags & SF_ERR_MASK))
5918 s->flags |= SF_ERR_SRVTO;
5919 if (!(s->flags & SF_FINST_MASK))
5920 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5921 return 0;
5922 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5923
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5924 /* client abort with an abortonclose */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5925 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]5926 sess->fe->fe_counters.cli_aborts++;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5927 s->be->be_counters.cli_aborts++;
5928 if (objt_server(s->target))
5929 objt_server(s->target)->counters.cli_aborts++;
5930
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5931 rep->analysers &= AN_FLT_END;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5932 channel_auto_close(rep);
5933
5934 txn->status = 400;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5935 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5936 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5937
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5938 if (!(s->flags & SF_ERR_MASK))
5939 s->flags |= SF_ERR_CLICL;
5940 if (!(s->flags & SF_FINST_MASK))
5941 s->flags |= SF_FINST_H;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5942
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5943 /* process_stream() will take care of the error */
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5944 return 0;
5945 }
5946
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5947 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5948 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5949 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5950 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]5951 else if (txn->flags & TX_NOT_FIRST)
5952 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5953
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5954 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5955 if (objt_server(s->target)) {
5956 objt_server(s->target)->counters.failed_resp++;
5957 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5958 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5959
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5960 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5961 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5962 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5963 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5964 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5965 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5966
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5967 if (!(s->flags & SF_ERR_MASK))
5968 s->flags |= SF_ERR_SRVCL;
5969 if (!(s->flags & SF_FINST_MASK))
5970 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5971 return 0;
5972 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5973
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5974 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5975 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5976 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5977 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]5978 else if (txn->flags & TX_NOT_FIRST)
5979 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5980
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5981 s->be->be_counters.failed_resp++;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5982 rep->analysers &= AN_FLT_END;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5983 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5984
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5985 if (!(s->flags & SF_ERR_MASK))
5986 s->flags |= SF_ERR_CLICL;
5987 if (!(s->flags & SF_FINST_MASK))
5988 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5989
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5990 /* process_stream() will take care of the error */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5991 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5992 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5993
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5994 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]5995 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5996 return 0;
5997 }
5998
5999 /* More interesting part now : we know that we have a complete
6000 * response which at least looks like HTTP. We have an indicator
6001 * of each header's length, so we can parse them quickly.
6002 */
6003
6004 if (unlikely(msg->err_pos >= 0))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6005 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]6006
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6007 /*
6008 * 1: get the status code
6009 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6010 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6011 if (n < 1 || n > 5)
6012 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6013 /* when the client triggers a 4xx from the server, it's most often due
6014 * to a missing object or permission. These events should be tracked
6015 * because if they happen often, it may indicate a brute force or a
6016 * vulnerability scan.
6017 */
6018 if (n == 4)
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6019 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6020
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6021 if (objt_server(s->target))
6022 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6023
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]6024 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
6025 * exactly one digit "." one digit. This check may be disabled using
6026 * option accept-invalid-http-response.
6027 */
6028 if (!(s->be->options2 & PR_O2_RSPBUG_OK)) {
6029 if (msg->sl.st.v_l != 8) {
6030 msg->err_pos = 0;
6031 goto hdr_response_bad;
6032 }
6033
6034 if (rep->buf->p[4] != '/' ||
6035 !isdigit((unsigned char)rep->buf->p[5]) ||
6036 rep->buf->p[6] != '.' ||
6037 !isdigit((unsigned char)rep->buf->p[7])) {
6038 msg->err_pos = 4;
6039 goto hdr_response_bad;
6040 }
6041 }
6042
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6043 /* check if the response is HTTP/1.1 or above */
6044 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6045 ((rep->buf->p[5] > '1') ||
6046 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6047 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6048
6049 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]6050 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]6051
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6052 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6053 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6054
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6055 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]6056
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]6057 /* Adjust server's health based on status code. Note: status codes 501
6058 * and 505 are triggered on demand by client request, so we must not
6059 * count them as server failures.
6060 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6061 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6062 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6063 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6064 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6065 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6066 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6067
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6068 /*
6069 * 2: check for cacheability.
6070 */
6071
6072 switch (txn->status) {
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]6073 case 100:
6074 /*
6075 * We may be facing a 100-continue response, in which case this
6076 * is not the right response, and we're waiting for the next one.
6077 * Let's allow this response to go to the client and wait for the
6078 * next one.
6079 */
6080 hdr_idx_init(&txn->hdr_idx);
6081 msg->next -= channel_forward(rep, msg->next);
6082 msg->msg_state = HTTP_MSG_RPBEFORE;
6083 txn->status = 0;
6084 s->logs.t_data = -1; /* was not a response yet */
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6085 FLT_STRM_CB(s, flt_http_reset(s, msg));
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]6086 goto next_one;
6087
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6088 case 200:
6089 case 203:
6090 case 206:
6091 case 300:
6092 case 301:
6093 case 410:
6094 /* RFC2616 @13.4:
6095 * "A response received with a status code of
6096 * 200, 203, 206, 300, 301 or 410 MAY be stored
6097 * by a cache (...) unless a cache-control
6098 * directive prohibits caching."
6099 *
6100 * RFC2616 @9.5: POST method :
6101 * "Responses to this method are not cacheable,
6102 * unless the response includes appropriate
6103 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6104 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6105 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6106 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6107 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
6108 break;
6109 default:
6110 break;
6111 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6112
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6113 /*
6114 * 3: we may need to capture headers
6115 */
6116 s->logs.logwait &= ~LW_RESP;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6117 if (unlikely((s->logs.logwait & LW_RSPHDR) && s->res_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6118 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6119 s->res_cap, sess->fe->rsp_cap);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6120
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6121 /* 4: determine the transfer-length according to RFC2616 #4.4, updated
6122 * by RFC7230#3.3.3 :
6123 *
6124 * The length of a message body is determined by one of the following
6125 * (in order of precedence):
6126 *
6127 * 1. Any response to a HEAD request and any response with a 1xx
6128 * (Informational), 204 (No Content), or 304 (Not Modified) status
6129 * code is always terminated by the first empty line after the
6130 * header fields, regardless of the header fields present in the
6131 * message, and thus cannot contain a message body.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6132 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6133 * 2. Any 2xx (Successful) response to a CONNECT request implies that
6134 * the connection will become a tunnel immediately after the empty
6135 * line that concludes the header fields. A client MUST ignore any
6136 * Content-Length or Transfer-Encoding header fields received in
6137 * such a message.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6138 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6139 * 3. If a Transfer-Encoding header field is present and the chunked
6140 * transfer coding (Section 4.1) is the final encoding, the message
6141 * body length is determined by reading and decoding the chunked
6142 * data until the transfer coding indicates the data is complete.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6143 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6144 * If a Transfer-Encoding header field is present in a response and
6145 * the chunked transfer coding is not the final encoding, the
6146 * message body length is determined by reading the connection until
6147 * it is closed by the server. If a Transfer-Encoding header field
6148 * is present in a request and the chunked transfer coding is not
6149 * the final encoding, the message body length cannot be determined
6150 * reliably; the server MUST respond with the 400 (Bad Request)
6151 * status code and then close the connection.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6152 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6153 * If a message is received with both a Transfer-Encoding and a
6154 * Content-Length header field, the Transfer-Encoding overrides the
6155 * Content-Length. Such a message might indicate an attempt to
6156 * perform request smuggling (Section 9.5) or response splitting
6157 * (Section 9.4) and ought to be handled as an error. A sender MUST
6158 * remove the received Content-Length field prior to forwarding such
6159 * a message downstream.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6160 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6161 * 4. If a message is received without Transfer-Encoding and with
6162 * either multiple Content-Length header fields having differing
6163 * field-values or a single Content-Length header field having an
6164 * invalid value, then the message framing is invalid and the
6165 * recipient MUST treat it as an unrecoverable error. If this is a
6166 * request message, the server MUST respond with a 400 (Bad Request)
6167 * status code and then close the connection. If this is a response
6168 * message received by a proxy, the proxy MUST close the connection
6169 * to the server, discard the received response, and send a 502 (Bad
6170 * Gateway) response to the client. If this is a response message
6171 * received by a user agent, the user agent MUST close the
6172 * connection to the server and discard the received response.
6173 *
6174 * 5. If a valid Content-Length header field is present without
6175 * Transfer-Encoding, its decimal value defines the expected message
6176 * body length in octets. If the sender closes the connection or
6177 * the recipient times out before the indicated number of octets are
6178 * received, the recipient MUST consider the message to be
6179 * incomplete and close the connection.
6180 *
6181 * 6. If this is a request message and none of the above are true, then
6182 * the message body length is zero (no message body is present).
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6183 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6184 * 7. Otherwise, this is a response message without a declared message
6185 * body length, so the message body length is determined by the
6186 * number of octets received prior to the server closing the
6187 * connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6188 */
6189
6190 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6191 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6192 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6193 * FIXME: should we parse anyway and return an error on chunked encoding ?
6194 */
6195 if (txn->meth == HTTP_METH_HEAD ||
6196 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6197 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6198 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6199 goto skip_content_length;
6200 }
6201
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6202 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6203 ctx.idx = 0;
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]6204 while (http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6205 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6206 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
6207 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6208 /* bad transfer-encoding (chunked followed by something else) */
6209 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6210 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6211 break;
6212 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6213 }
6214
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6215 /* Chunked responses must have their content-length removed */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6216 ctx.idx = 0;
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6217 if (use_close_only || (msg->flags & HTTP_MSGF_TE_CHNK)) {
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6218 while (http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx))
6219 http_remove_header2(msg, &txn->hdr_idx, &ctx);
6220 }
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6221 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]6222 signed long long cl;
6223
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6224 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6225 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6226 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6227 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6228
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6229 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6230 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6231 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6232 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6233
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6234 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6235 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6236 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6237 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6238
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6239 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6240 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6241 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6242 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6243
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6244 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6245 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6246 }
6247
6248skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6249 /* Now we have to check if we need to modify the Connection header.
6250 * This is more difficult on the response than it is on the request,
6251 * because we can have two different HTTP versions and we don't know
6252 * how the client will interprete a response. For instance, let's say
6253 * that the client sends a keep-alive request in HTTP/1.0 and gets an
6254 * HTTP/1.1 response without any header. Maybe it will bound itself to
6255 * HTTP/1.0 because it only knows about it, and will consider the lack
6256 * of header as a close, or maybe it knows HTTP/1.1 and can consider
6257 * the lack of header as a keep-alive. Thus we will use two flags
6258 * indicating how a request MAY be understood by the client. In case
6259 * of multiple possibilities, we'll fix the header to be explicit. If
6260 * ambiguous cases such as both close and keepalive are seen, then we
6261 * will fall back to explicit close. Note that we won't take risks with
6262 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6263 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6264 */
6265
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6266 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
6267 txn->status == 101)) {
6268 /* Either we've established an explicit tunnel, or we're
6269 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6270 * to understand the next protocols. We have to switch to tunnel
6271 * mode, so that we transfer the request and responses then let
6272 * this protocol pass unmodified. When we later implement specific
6273 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6274 * header which contains information about that protocol for
6275 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6276 */
6277 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
6278 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6279 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
6280 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6281 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6282 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6283 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6284
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6285 /* this situation happens when combining pretend-keepalive with httpclose. */
6286 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6287 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6288 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6289 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
6290
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6291 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6292 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6293 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
6294 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6295
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6296 /* now adjust header transformations depending on current state */
6297 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
6298 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
6299 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6300 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6301 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6302 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6303 else { /* SCL / KAL */
6304 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6305 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6306 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6307 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6308
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6309 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6310 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6311
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6312 /* Some keep-alive responses are converted to Server-close if
6313 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6314 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6315 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
6316 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6317 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6318 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6319 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6320 }
6321
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6322 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6323 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6324
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6325 /* end of job, return OK */
6326 rep->analysers &= ~an_bit;
6327 rep->analyse_exp = TICK_ETERNITY;
6328 channel_auto_close(rep);
6329 return 1;
6330
6331 abort_keep_alive:
6332 /* A keep-alive request to the server failed on a network error.
6333 * The client is required to retry. We need to close without returning
6334 * any other information so that the client retries.
6335 */
6336 txn->status = 0;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6337 rep->analysers &= AN_FLT_END;
6338 s->req.analysers &= AN_FLT_END;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6339 channel_auto_close(rep);
6340 s->logs.logwait = 0;
6341 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6342 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6343 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6344 http_reply_and_close(s, txn->status, NULL);
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6345 return 0;
6346}
6347
6348/* This function performs all the processing enabled for the current response.
6349 * It normally returns 1 unless it wants to break. It relies on buffers flags,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6350 * and updates s->res.analysers. It might make sense to explode it into several
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6351 * other functions. It works like process_request (see indications above).
6352 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6353int 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]6354{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6355 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6356 struct http_txn *txn = s->txn;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6357 struct http_msg *msg = &txn->rsp;
6358 struct proxy *cur_proxy;
6359 struct cond_wordlist *wl;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]6360 enum rule_result ret = HTTP_RULE_RES_CONT;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6361
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6362 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]6363 now_ms, __FUNCTION__,
6364 s,
6365 rep,
6366 rep->rex, rep->wex,
6367 rep->flags,
6368 rep->buf->i,
6369 rep->analysers);
6370
6371 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
6372 return 0;
6373
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6374 /* The stats applet needs to adjust the Connection header but we don't
6375 * apply any filter there.
6376 */
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6377 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
6378 rep->analysers &= ~an_bit;
6379 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6380 goto skip_filters;
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6381 }
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6382
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6383 /*
6384 * We will have to evaluate the filters.
6385 * As opposed to version 1.2, now they will be evaluated in the
6386 * filters order and not in the header order. This means that
6387 * each filter has to be validated among all headers.
6388 *
6389 * Filters are tried with ->be first, then with ->fe if it is
6390 * different from ->be.
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6391 *
6392 * Maybe we are in resume condiion. In this case I choose the
6393 * "struct proxy" which contains the rule list matching the resume
6394 * pointer. If none of theses "struct proxy" match, I initialise
6395 * the process with the first one.
6396 *
6397 * In fact, I check only correspondance betwwen the current list
6398 * pointer and the ->fe rule list. If it doesn't match, I initialize
6399 * the loop with the ->be.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6400 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6401 if (s->current_rule_list == &sess->fe->http_res_rules)
6402 cur_proxy = sess->fe;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6403 else
6404 cur_proxy = s->be;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6405 while (1) {
6406 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6407
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6408 /* evaluate http-response rules */
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6409 if (ret == HTTP_RULE_RES_CONT) {
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]6410 ret = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, s);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]6411
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6412 if (ret == HTTP_RULE_RES_BADREQ)
6413 goto return_srv_prx_502;
6414
6415 if (ret == HTTP_RULE_RES_DONE) {
6416 rep->analysers &= ~an_bit;
6417 rep->analyse_exp = TICK_ETERNITY;
6418 return 1;
6419 }
6420 }
6421
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6422 /* we need to be called again. */
6423 if (ret == HTTP_RULE_RES_YIELD) {
6424 channel_dont_close(rep);
6425 return 0;
6426 }
6427
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6428 /* try headers filters */
6429 if (rule_set->rsp_exp != NULL) {
6430 if (apply_filters_to_response(s, rep, rule_set) < 0) {
6431 return_bad_resp:
6432 if (objt_server(s->target)) {
6433 objt_server(s->target)->counters.failed_resp++;
6434 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6435 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6436 s->be->be_counters.failed_resp++;
6437 return_srv_prx_502:
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6438 rep->analysers &= AN_FLT_END;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6439 txn->status = 502;
6440 s->logs.t_data = -1; /* was not a valid response */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6441 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6442 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6443 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6444 if (!(s->flags & SF_ERR_MASK))
6445 s->flags |= SF_ERR_PRXCOND;
6446 if (!(s->flags & SF_FINST_MASK))
6447 s->flags |= SF_FINST_H;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6448 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6449 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6450 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6451
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6452 /* has the response been denied ? */
6453 if (txn->flags & TX_SVDENY) {
6454 if (objt_server(s->target))
6455 objt_server(s->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6456
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6457 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6458 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6459 if (sess->listener->counters)
6460 sess->listener->counters->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6461
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6462 goto return_srv_prx_502;
6463 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]6464
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6465 /* add response headers from the rule sets in the same order */
6466 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6467 if (txn->status < 200 && txn->status != 101)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6468 break;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6469 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]6470 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]6471 ret = acl_pass(ret);
6472 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
6473 ret = !ret;
6474 if (!ret)
6475 continue;
6476 }
6477 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
6478 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6479 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6480
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6481 /* check whether we're already working on the frontend */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6482 if (cur_proxy == sess->fe)
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6483 break;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6484 cur_proxy = sess->fe;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6485 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6486
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6487 /* After this point, this anayzer can't return yield, so we can
6488 * remove the bit corresponding to this analyzer from the list.
6489 *
6490 * Note that the intermediate returns and goto found previously
6491 * reset the analyzers.
6492 */
6493 rep->analysers &= ~an_bit;
6494 rep->analyse_exp = TICK_ETERNITY;
6495
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6496 /* OK that's all we can do for 1xx responses */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6497 if (unlikely(txn->status < 200 && txn->status != 101))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6498 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6499
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6500 /*
6501 * Now check for a server cookie.
6502 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]6503 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]6504 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6505
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6506 /*
6507 * Check for cache-control or pragma headers if required.
6508 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6509 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]6510 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6511
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6512 /*
6513 * Add server cookie in the response if needed
6514 */
6515 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
6516 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6517 (!(s->flags & SF_DIRECT) ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6518 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
6519 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
6520 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
6521 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
6522 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6523 !(s->flags & SF_IGNORE_PRST)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6524 /* the server is known, it's not the one the client requested, or the
6525 * cookie's last seen date needs to be refreshed. We have to
6526 * insert a set-cookie here, except if we want to insert only on POST
6527 * requests and this one isn't. Note that servers which don't have cookies
6528 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6529 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6530 if (!objt_server(s->target)->cookie) {
6531 chunk_printf(&trash,
6532 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
6533 s->be->cookie_name);
6534 }
6535 else {
6536 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]6537
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6538 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
6539 /* emit last_date, which is mandatory */
6540 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6541 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6542 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6543
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6544 if (s->be->cookie_maxlife) {
6545 /* emit first_date, which is either the original one or
6546 * the current date.
6547 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6548 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6549 s30tob64(txn->cookie_first_date ?
6550 txn->cookie_first_date >> 2 :
6551 (date.tv_sec+3) >> 2, trash.str + trash.len);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6552 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6553 }
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6554 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6555 chunk_appendf(&trash, "; path=/");
6556 }
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6557
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6558 if (s->be->cookie_domain)
6559 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6560
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6561 if (s->be->ck_opts & PR_CK_HTTPONLY)
6562 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6563
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6564 if (s->be->ck_opts & PR_CK_SECURE)
6565 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6566
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6567 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
6568 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6569
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6570 txn->flags &= ~TX_SCK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6571 if (objt_server(s->target)->cookie && (s->flags & SF_DIRECT))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6572 /* the server did not change, only the date was updated */
6573 txn->flags |= TX_SCK_UPDATED;
6574 else
6575 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6576
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6577 /* Here, we will tell an eventual cache on the client side that we don't
6578 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6579 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6580 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6581 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6582 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6583
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6584 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6585
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6586 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
6587 "Cache-control: private", 22) < 0))
6588 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6589 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6590 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6591
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6592 /*
6593 * Check if result will be cacheable with a cookie.
6594 * We'll block the response if security checks have caught
6595 * nasty things such as a cacheable cookie.
6596 */
6597 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6598 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
6599 (s->be->options & PR_O_CHK_CACHE)) {
6600 /* we're in presence of a cacheable response containing
6601 * a set-cookie header. We'll block it as requested by
6602 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6603 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6604 if (objt_server(s->target))
6605 objt_server(s->target)->counters.failed_secu++;
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6606
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6607 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6608 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6609 if (sess->listener->counters)
6610 sess->listener->counters->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6611
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6612 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
6613 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6614 send_log(s->be, LOG_ALERT,
6615 "Blocking cacheable cookie in response from instance %s, server %s.\n",
6616 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6617 goto return_srv_prx_502;
6618 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6619
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6620 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6621 /*
6622 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
6623 * If an "Upgrade" token is found, the header is left untouched in order
6624 * 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]6625 * if anything but "Upgrade" is present in the Connection header. We don't
6626 * want to touch any 101 response either since it's switching to another
6627 * protocol.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6628 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6629 if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) &&
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6630 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6631 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6632 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
6633 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6634
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6635 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6636 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6637 /* we want a keep-alive response here. Keep-alive header
6638 * required if either side is not 1.1.
6639 */
6640 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
6641 want_flags |= TX_CON_KAL_SET;
6642 }
6643 else {
6644 /* we want a close response here. Close header required if
6645 * the server is 1.1, regardless of the client.
6646 */
6647 if (msg->flags & HTTP_MSGF_VER_11)
6648 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6649 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6650
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6651 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
6652 http_change_connection_header(txn, msg, want_flags);
6653 }
6654
6655 skip_header_mangling:
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6656 if ((msg->flags & HTTP_MSGF_XFER_LEN) || HAS_FILTERS(s) ||
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6657 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
6658 rep->analysers &= ~AN_FLT_XFER_DATA;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6659 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6660 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6661
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6662 /* if the user wants to log as soon as possible, without counting
6663 * bytes from the server, then this is the right moment. We have
6664 * to temporarily assign bytes_out to log what we currently have.
6665 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6666 if (!LIST_ISEMPTY(&sess->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6667 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
6668 s->logs.bytes_out = txn->rsp.eoh;
6669 s->do_log(s);
6670 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6671 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6672 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6673}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6674
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6675/* This function is an analyser which forwards response body (including chunk
6676 * sizes if any). It is called as soon as we must forward, even if we forward
6677 * zero byte. The only situation where it must not be called is when we're in
6678 * tunnel mode and we want to forward till the close. It's used both to forward
6679 * remaining data and to resync after end of body. It expects the msg_state to
6680 * 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]6681 * 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]6682 *
6683 * It is capable of compressing response data both in content-length mode and
6684 * in chunked mode. The state machines follows different flows depending on
6685 * whether content-length and chunked modes are used, since there are no
6686 * trailers in content-length :
6687 *
6688 * chk-mode cl-mode
6689 * ,----- BODY -----.
6690 * / \
6691 * V size > 0 V chk-mode
6692 * .--> SIZE -------------> DATA -------------> CRLF
6693 * | | size == 0 | last byte |
6694 * | v final crlf v inspected |
6695 * | TRAILERS -----------> DONE |
6696 * | |
6697 * `----------------------------------------------'
6698 *
6699 * Compression only happens in the DATA state, and must be flushed in final
6700 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
6701 * is performed at once on final states for all bytes parsed, or when leaving
6702 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6703 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6704int http_response_forward_body(struct stream *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6705{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6706 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6707 struct http_txn *txn = s->txn;
6708 struct http_msg *msg = &s->txn->rsp;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6709 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6710
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6711 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6712 return 0;
6713
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6714 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]6715 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6716 !s->req.analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6717 /* Output closed while we were sending data. We must abort and
6718 * wake the other side up.
6719 */
6720 msg->msg_state = HTTP_MSG_ERROR;
6721 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6722 return 1;
6723 }
6724
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6725 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6726 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6727
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6728 if (msg->msg_state == HTTP_MSG_BODY) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6729 msg->msg_state = ((msg->flags & HTTP_MSGF_TE_CHNK)
6730 ? HTTP_MSG_CHUNK_SIZE
6731 : HTTP_MSG_DATA);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6732 }
6733
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6734 if (res->to_forward) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6735 /* We can't process the buffer's contents yet */
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6736 res->flags |= CF_WAKE_WRITE;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6737 goto missing_data_or_waiting;
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6738 }
6739
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6740 if (msg->msg_state < HTTP_MSG_DONE) {
6741 ret = ((msg->flags & HTTP_MSGF_TE_CHNK)
6742 ? http_msg_forward_chunked_body(s, msg)
6743 : http_msg_forward_body(s, msg));
6744 if (!ret)
6745 goto missing_data_or_waiting;
6746 if (ret < 0)
6747 goto return_bad_res;
6748 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6749
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6750 /* other states, DONE...TUNNEL */
6751 /* for keep-alive we don't want to forward closes on DONE */
6752 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6753 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
6754 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]6755
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6756 ret = msg->msg_state;
6757 if (http_resync_states(s)) {
6758 /* some state changes occurred, maybe the analyser was disabled
6759 * too. */
6760 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
6761 if (res->flags & CF_SHUTW) {
6762 /* response errors are most likely due to the
6763 * client aborting the transfer. */
6764 goto aborted_xfer;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6765 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6766 if (msg->err_pos >= 0)
6767 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, strm_fe(s));
6768 goto return_bad_res;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6769 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6770 return 1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6771 }
Willy Tarreauf51d03c2016-05-02 15:25:15 +0200[diff] [blame]6772 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6773
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6774 missing_data_or_waiting:
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6775 if (res->flags & CF_SHUTW)
6776 goto aborted_xfer;
6777
6778 /* stop waiting for data if the input is closed before the end. If the
6779 * client side was already closed, it means that the client has aborted,
6780 * so we don't want to count this as a server abort. Otherwise it's a
6781 * server abort.
6782 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6783 if (res->flags & CF_SHUTR) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6784 if ((s->req.flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6785 goto aborted_xfer;
Christopher Fauleta46bbd82015-06-19 09:00:58 +0200[diff] [blame]6786 /* If we have some pending data, we continue the processing */
6787 if (!buffer_pending(res->buf)) {
6788 if (!(s->flags & SF_ERR_MASK))
6789 s->flags |= SF_ERR_SRVCL;
6790 s->be->be_counters.srv_aborts++;
6791 if (objt_server(s->target))
6792 objt_server(s->target)->counters.srv_aborts++;
6793 goto return_bad_res_stats_ok;
6794 }
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6795 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6796
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6797 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6798 if (!s->req.analysers)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6799 goto return_bad_res;
6800
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6801 /* When TE: chunked is used, we need to get there again to parse
6802 * remaining chunks even if the server has closed, so we don't want to
6803 * set CF_DONTCLOSE. Similarly, if the body length is undefined, if
6804 * keep-alive is set on the client side or if there are filters
6805 * registered on the stream, we don't want to forward a close
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6806 */
Christopher Faulet92d36382015-11-05 13:35:03 +0100[diff] [blame]6807 if ((msg->flags & HTTP_MSGF_TE_CHNK) || !msg->body_len ||
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6808 HAS_FILTERS(s) ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6809 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6810 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6811 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6812
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6813 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6814 * 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]6815 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6816 * modes are already handled by the stream sock layer. We must not do
6817 * this in content-length mode because it could present the MSG_MORE
6818 * flag with the last block of forwarded data, which would cause an
6819 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6820 */
Christopher Faulet92d36382015-11-05 13:35:03 +0100[diff] [blame]6821 if ((msg->flags & HTTP_MSGF_TE_CHNK) || (msg->flags & HTTP_MSGF_COMPRESSING))
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6822 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6823
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6824 /* the stream handler will take care of timeouts and errors */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6825 return 0;
6826
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6827 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6828 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6829 if (objt_server(s->target))
6830 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6831
6832 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6833 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6834 /* don't send any error message as we're in the body */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6835 http_reply_and_close(s, txn->status, NULL);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6836 res->analysers &= AN_FLT_END;
6837 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]6838 if (objt_server(s->target))
6839 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6840
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6841 if (!(s->flags & SF_ERR_MASK))
6842 s->flags |= SF_ERR_PRXCOND;
6843 if (!(s->flags & SF_FINST_MASK))
6844 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6845 return 0;
6846
6847 aborted_xfer:
6848 txn->rsp.msg_state = HTTP_MSG_ERROR;
6849 /* don't send any error message as we're in the body */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6850 http_reply_and_close(s, txn->status, NULL);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6851 res->analysers &= AN_FLT_END;
6852 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]6853
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6854 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6855 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6856 if (objt_server(s->target))
6857 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6858
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6859 if (!(s->flags & SF_ERR_MASK))
6860 s->flags |= SF_ERR_CLICL;
6861 if (!(s->flags & SF_FINST_MASK))
6862 s->flags |= SF_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6863 return 0;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6864}
6865
6866
6867static inline int
6868http_msg_forward_body(struct stream *s, struct http_msg *msg)
6869{
6870 struct channel *chn = msg->chn;
6871 int ret;
6872
6873 /* Here we have the guarantee to be in HTTP_MSG_DATA or HTTP_MSG_ENDING state */
6874
6875 if (msg->msg_state == HTTP_MSG_ENDING)
6876 goto ending;
6877
6878 /* Neither content-length, nor transfer-encoding was found, so we must
6879 * read the body until the server connection is closed. In that case, we
6880 * eat data as they come. Of course, this happens for response only. */
6881 if (!(msg->flags & HTTP_MSGF_XFER_LEN)) {
6882 unsigned long long len = (chn->buf->i - msg->next);
6883 msg->chunk_len += len;
6884 msg->body_len += len;
6885 }
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6886 ret = FLT_STRM_DATA_CB(s, chn, flt_http_data(s, msg),
6887 /* default_ret */ MIN(msg->chunk_len, chn->buf->i - msg->next),
6888 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6889 msg->next += ret;
6890 msg->chunk_len -= ret;
6891 if (msg->chunk_len) {
6892 /* input empty or output full */
6893 if (chn->buf->i > msg->next)
6894 chn->flags |= CF_WAKE_WRITE;
6895 goto missing_data_or_waiting;
6896 }
6897
6898 if (!(msg->flags & HTTP_MSGF_XFER_LEN) && !(chn->flags & CF_SHUTR)) {
6899 /* The server still sending data */
6900 goto missing_data_or_waiting;
6901 }
6902 msg->msg_state = HTTP_MSG_ENDING;
6903
6904 ending:
6905 /* we may have some pending data starting at res->buf->p such as a last
6906 * chunk of data or trailers. */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6907 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
6908 /* default_ret */ msg->next,
6909 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6910 b_adv(chn->buf, ret);
6911 msg->next -= ret;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]6912 if (unlikely(!(chn->flags & CF_WROTE_DATA) || msg->sov > 0))
6913 msg->sov -= ret;
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]6914 if (msg->next)
6915 goto waiting;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]6916
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6917 FLT_STRM_DATA_CB(s, chn, flt_http_end(s, msg),
6918 /* default_ret */ 1,
6919 /* on_error */ goto error,
6920 /* on_wait */ goto waiting);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6921 msg->msg_state = HTTP_MSG_DONE;
6922 return 1;
6923
6924 missing_data_or_waiting:
6925 /* we may have some pending data starting at chn->buf->p */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6926 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
6927 /* default_ret */ msg->next,
6928 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6929 b_adv(chn->buf, ret);
6930 msg->next -= ret;
6931 if (!(chn->flags & CF_WROTE_DATA) || msg->sov > 0)
6932 msg->sov -= ret;
Christopher Faulet75e2eb62015-12-15 10:41:47 +0100[diff] [blame]6933 if (!HAS_DATA_FILTERS(s, chn))
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6934 msg->chunk_len -= channel_forward(chn, msg->chunk_len);
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]6935 waiting:
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6936 return 0;
6937 error:
6938 return -1;
6939}
6940
6941static inline int
6942http_msg_forward_chunked_body(struct stream *s, struct http_msg *msg)
6943{
6944 struct channel *chn = msg->chn;
6945 int ret;
6946
6947 /* Here we have the guarantee to be in one of the following state:
6948 * HTTP_MSG_DATA, HTTP_MSG_CHUNK_SIZE, HTTP_MSG_CHUNK_CRLF,
6949 * HTTP_MSG_TRAILERS or HTTP_MSG_ENDING. */
6950
6951 switch_states:
6952 switch (msg->msg_state) {
6953 case HTTP_MSG_DATA:
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6954 ret = FLT_STRM_DATA_CB(s, chn, flt_http_data(s, msg),
6955 /* default_ret */ MIN(msg->chunk_len, chn->buf->i - msg->next),
6956 /* on_error */ goto error);
6957 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6958 msg->chunk_len -= ret;
6959 if (msg->chunk_len) {
6960 /* input empty or output full */
6961 if (chn->buf->i > msg->next)
6962 chn->flags |= CF_WAKE_WRITE;
6963 goto missing_data_or_waiting;
6964 }
6965
6966 /* nothing left to forward for this chunk*/
6967 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
6968 /* fall through for HTTP_MSG_CHUNK_CRLF */
6969
6970 case HTTP_MSG_CHUNK_CRLF:
6971 /* we want the CRLF after the data */
6972 ret = http_skip_chunk_crlf(msg);
6973 if (ret == 0)
6974 goto missing_data_or_waiting;
6975 if (ret < 0)
6976 goto chunk_parsing_error;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]6977 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6978 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
6979 /* fall through for HTTP_MSG_CHUNK_SIZE */
6980
6981 case HTTP_MSG_CHUNK_SIZE:
6982 /* read the chunk size and assign it to ->chunk_len,
6983 * then set ->next to point to the body and switch to
6984 * DATA or TRAILERS state.
6985 */
6986 ret = http_parse_chunk_size(msg);
6987 if (ret == 0)
6988 goto missing_data_or_waiting;
6989 if (ret < 0)
6990 goto chunk_parsing_error;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]6991 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6992 if (msg->chunk_len) {
6993 msg->msg_state = HTTP_MSG_DATA;
6994 goto switch_states;
6995 }
6996 msg->msg_state = HTTP_MSG_TRAILERS;
6997 /* fall through for HTTP_MSG_TRAILERS */
6998
6999 case HTTP_MSG_TRAILERS:
7000 ret = http_forward_trailers(msg);
7001 if (ret < 0)
7002 goto chunk_parsing_error;
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7003 FLT_STRM_DATA_CB(s, chn, flt_http_chunk_trailers(s, msg),
7004 /* default_ret */ 1,
7005 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7006 msg->next += msg->sol;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7007 if (!ret)
7008 goto missing_data_or_waiting;
7009 break;
7010
7011 case HTTP_MSG_ENDING:
7012 goto ending;
7013
7014 default:
7015 /* This should no happen in this function */
7016 goto error;
7017 }
7018
7019 msg->msg_state = HTTP_MSG_ENDING;
7020 ending:
7021 /* we may have some pending data starting at res->buf->p such as a last
7022 * chunk of data or trailers. */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7023 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]7024 /* default_ret */ msg->next,
7025 /* on_error */ goto error);
7026 b_adv(chn->buf, ret);
7027 msg->next -= ret;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]7028 if (unlikely(!(chn->flags & CF_WROTE_DATA) || msg->sov > 0))
7029 msg->sov -= ret;
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]7030 if (msg->next)
7031 goto waiting;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]7032
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7033 FLT_STRM_DATA_CB(s, chn, flt_http_end(s, msg),
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7034 /* default_ret */ 1,
7035 /* on_error */ goto error,
7036 /* on_wait */ goto waiting);
7037 msg->msg_state = HTTP_MSG_DONE;
7038 return 1;
7039
7040 missing_data_or_waiting:
7041 /* we may have some pending data starting at chn->buf->p */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]7042 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]7043 /* default_ret */ msg->next,
7044 /* on_error */ goto error);
7045 b_adv(chn->buf, ret);
7046 msg->next -= ret;
7047 if (!(chn->flags & CF_WROTE_DATA) || msg->sov > 0)
7048 msg->sov -= ret;
Christopher Faulet75e2eb62015-12-15 10:41:47 +0100[diff] [blame]7049 if (!HAS_DATA_FILTERS(s, chn))
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7050 msg->chunk_len -= channel_forward(chn, msg->chunk_len);
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]7051 waiting:
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7052 return 0;
7053
7054 chunk_parsing_error:
7055 if (msg->err_pos >= 0) {
7056 if (chn->flags & CF_ISRESP)
7057 http_capture_bad_message(&s->be->invalid_rep, s, msg,
7058 msg->msg_state, strm_fe(s));
7059 else
7060 http_capture_bad_message(&strm_fe(s)->invalid_req, s,
7061 msg, msg->msg_state, s->be);
7062 }
7063 error:
7064 return -1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7065}
7066
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7067
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7068/* Iterate the same filter through all request headers.
7069 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7070 * Since it can manage the switch to another backend, it updates the per-proxy
7071 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7072 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7073int 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]7074{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7075 char *cur_ptr, *cur_end, *cur_next;
7076 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7077 struct http_txn *txn = s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7078 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7079 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]7080
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7081 last_hdr = 0;
7082
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7083 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7084 old_idx = 0;
7085
7086 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7087 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7088 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7089 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7090 (exp->action == ACT_ALLOW ||
7091 exp->action == ACT_DENY ||
7092 exp->action == ACT_TARPIT))
7093 return 0;
7094
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7095 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7096 if (!cur_idx)
7097 break;
7098
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7099 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7100 cur_ptr = cur_next;
7101 cur_end = cur_ptr + cur_hdr->len;
7102 cur_next = cur_end + cur_hdr->cr + 1;
7103
7104 /* Now we have one header between cur_ptr and cur_end,
7105 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7106 */
7107
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7108 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]7109 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7110 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7111 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7112 last_hdr = 1;
7113 break;
7114
7115 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7116 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7117 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7118 break;
7119
7120 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7121 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7122 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7123 break;
7124
7125 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7126 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7127 if (trash.len < 0)
7128 return -1;
7129
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7130 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7131 /* FIXME: if the user adds a newline in the replacement, the
7132 * index will not be recalculated for now, and the new line
7133 * will not be counted as a new header.
7134 */
7135
7136 cur_end += delta;
7137 cur_next += delta;
7138 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7139 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7140 break;
7141
7142 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7143 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7144 cur_next += delta;
7145
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7146 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7147 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7148 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7149 cur_hdr->len = 0;
7150 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7151 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7152 break;
7153
7154 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7155 }
7156
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7157 /* keep the link from this header to next one in case of later
7158 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7159 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7160 old_idx = cur_idx;
7161 }
7162 return 0;
7163}
7164
7165
7166/* Apply the filter to the request line.
7167 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7168 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7169 * Since it can manage the switch to another backend, it updates the per-proxy
7170 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7171 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7172int 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]7173{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7174 char *cur_ptr, *cur_end;
7175 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7176 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7177 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7178
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7179 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7180 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7181 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7182 (exp->action == ACT_ALLOW ||
7183 exp->action == ACT_DENY ||
7184 exp->action == ACT_TARPIT))
7185 return 0;
7186 else if (exp->action == ACT_REMOVE)
7187 return 0;
7188
7189 done = 0;
7190
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7191 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7192 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7193
7194 /* Now we have the request line between cur_ptr and cur_end */
7195
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7196 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]7197 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7198 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7199 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7200 done = 1;
7201 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7202
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7203 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7204 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7205 done = 1;
7206 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7207
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7208 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7209 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7210 done = 1;
7211 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7212
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7213 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7214 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7215 if (trash.len < 0)
7216 return -1;
7217
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7218 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7219 /* FIXME: if the user adds a newline in the replacement, the
7220 * index will not be recalculated for now, and the new line
7221 * will not be counted as a new header.
7222 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7223
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7224 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7225 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7226 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7227 HTTP_MSG_RQMETH,
7228 cur_ptr, cur_end + 1,
7229 NULL, NULL);
7230 if (unlikely(!cur_end))
7231 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7232
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7233 /* we have a full request and we know that we have either a CR
7234 * or an LF at <ptr>.
7235 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7236 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
7237 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]7238 /* there is no point trying this regex on headers */
7239 return 1;
7240 }
7241 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7242 return done;
7243}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]7244
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/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7248 * 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]7249 * 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]7250 * unparsable request. Since it can manage the switch to another backend, it
7251 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7252 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7253int apply_filters_to_request(struct stream *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7254{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7255 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7256 struct http_txn *txn = s->txn;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7257 struct hdr_exp *exp;
7258
7259 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7260 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7261
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7262 /*
7263 * The interleaving of transformations and verdicts
7264 * makes it difficult to decide to continue or stop
7265 * the evaluation.
7266 */
7267
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7268 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
7269 break;
7270
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7271 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7272 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7273 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7274 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7275
7276 /* if this filter had a condition, evaluate it now and skip to
7277 * next filter if the condition does not match.
7278 */
7279 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7280 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]7281 ret = acl_pass(ret);
7282 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7283 ret = !ret;
7284
7285 if (!ret)
7286 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7287 }
7288
7289 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7290 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7291 if (unlikely(ret < 0))
7292 return -1;
7293
7294 if (likely(ret == 0)) {
7295 /* The filter did not match the request, it can be
7296 * iterated through all headers.
7297 */
Willy Tarreau34d4c3c2015-01-30 20:58:58 +0100[diff] [blame]7298 if (unlikely(apply_filter_to_req_headers(s, req, exp) < 0))
7299 return -1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7300 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7301 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7302 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7303}
7304
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7305
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7306/* Find the end of a cookie value contained between <s> and <e>. It works the
7307 * same way as with headers above except that the semi-colon also ends a token.
7308 * See RFC2965 for more information. Note that it requires a valid header to
7309 * return a valid result.
7310 */
7311char *find_cookie_value_end(char *s, const char *e)
7312{
7313 int quoted, qdpair;
7314
7315 quoted = qdpair = 0;
7316 for (; s < e; s++) {
7317 if (qdpair) qdpair = 0;
7318 else if (quoted) {
7319 if (*s == '\\') qdpair = 1;
7320 else if (*s == '"') quoted = 0;
7321 }
7322 else if (*s == '"') quoted = 1;
7323 else if (*s == ',' || *s == ';') return s;
7324 }
7325 return s;
7326}
7327
7328/* Delete a value in a header between delimiters <from> and <next> in buffer
7329 * <buf>. The number of characters displaced is returned, and the pointer to
7330 * the first delimiter is updated if required. The function tries as much as
7331 * possible to respect the following principles :
7332 * - replace <from> delimiter by the <next> one unless <from> points to a
7333 * colon, in which case <next> is simply removed
7334 * - set exactly one space character after the new first delimiter, unless
7335 * there are not enough characters in the block being moved to do so.
7336 * - remove unneeded spaces before the previous delimiter and after the new
7337 * one.
7338 *
7339 * It is the caller's responsibility to ensure that :
7340 * - <from> points to a valid delimiter or the colon ;
7341 * - <next> points to a valid delimiter or the final CR/LF ;
7342 * - there are non-space chars before <from> ;
7343 * - there is a CR/LF at or after <next>.
7344 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]7345int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7346{
7347 char *prev = *from;
7348
7349 if (*prev == ':') {
7350 /* We're removing the first value, preserve the colon and add a
7351 * space if possible.
7352 */
7353 if (!http_is_crlf[(unsigned char)*next])
7354 next++;
7355 prev++;
7356 if (prev < next)
7357 *prev++ = ' ';
7358
7359 while (http_is_spht[(unsigned char)*next])
7360 next++;
7361 } else {
7362 /* Remove useless spaces before the old delimiter. */
7363 while (http_is_spht[(unsigned char)*(prev-1)])
7364 prev--;
7365 *from = prev;
7366
7367 /* copy the delimiter and if possible a space if we're
7368 * not at the end of the line.
7369 */
7370 if (!http_is_crlf[(unsigned char)*next]) {
7371 *prev++ = *next++;
7372 if (prev + 1 < next)
7373 *prev++ = ' ';
7374 while (http_is_spht[(unsigned char)*next])
7375 next++;
7376 }
7377 }
7378 return buffer_replace2(buf, prev, next, NULL, 0);
7379}
7380
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7381/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7382 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7383 * desirable to call it only when needed. This code is quite complex because
7384 * of the multiple very crappy and ambiguous syntaxes we have to support. it
7385 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7386 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7387void manage_client_side_cookies(struct stream *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7388{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7389 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7390 struct session *sess = s->sess;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7391 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7392 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7393 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
7394 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7395
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7396 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]7397 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7398 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7399
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7400 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7401 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7402 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7403
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7404 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7405 hdr_beg = hdr_next;
7406 hdr_end = hdr_beg + cur_hdr->len;
7407 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7408
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7409 /* We have one full header between hdr_beg and hdr_end, and the
7410 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7411 * "Cookie:" headers.
7412 */
7413
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7414 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7415 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7416 old_idx = cur_idx;
7417 continue;
7418 }
7419
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7420 del_from = NULL; /* nothing to be deleted */
7421 preserve_hdr = 0; /* assume we may kill the whole header */
7422
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7423 /* Now look for cookies. Conforming to RFC2109, we have to support
7424 * attributes whose name begin with a '$', and associate them with
7425 * the right cookie, if we want to delete this cookie.
7426 * So there are 3 cases for each cookie read :
7427 * 1) it's a special attribute, beginning with a '$' : ignore it.
7428 * 2) it's a server id cookie that we *MAY* want to delete : save
7429 * some pointers on it (last semi-colon, beginning of cookie...)
7430 * 3) it's an application cookie : we *MAY* have to delete a previous
7431 * "special" cookie.
7432 * At the end of loop, if a "special" cookie remains, we may have to
7433 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7434 * *MUST* delete it.
7435 *
7436 * Note: RFC2965 is unclear about the processing of spaces around
7437 * the equal sign in the ATTR=VALUE form. A careful inspection of
7438 * the RFC explicitly allows spaces before it, and not within the
7439 * tokens (attrs or values). An inspection of RFC2109 allows that
7440 * too but section 10.1.3 lets one think that spaces may be allowed
7441 * after the equal sign too, resulting in some (rare) buggy
7442 * implementations trying to do that. So let's do what servers do.
7443 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
7444 * allowed quoted strings in values, with any possible character
7445 * after a backslash, including control chars and delimitors, which
7446 * causes parsing to become ambiguous. Browsers also allow spaces
7447 * within values even without quotes.
7448 *
7449 * We have to keep multiple pointers in order to support cookie
7450 * removal at the beginning, middle or end of header without
7451 * corrupting the header. All of these headers are valid :
7452 *
7453 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
7454 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
7455 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
7456 * | | | | | | | | |
7457 * | | | | | | | | hdr_end <--+
7458 * | | | | | | | +--> next
7459 * | | | | | | +----> val_end
7460 * | | | | | +-----------> val_beg
7461 * | | | | +--------------> equal
7462 * | | | +----------------> att_end
7463 * | | +---------------------> att_beg
7464 * | +--------------------------> prev
7465 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7466 */
7467
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7468 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
7469 /* Iterate through all cookies on this line */
7470
7471 /* find att_beg */
7472 att_beg = prev + 1;
7473 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7474 att_beg++;
7475
7476 /* find att_end : this is the first character after the last non
7477 * space before the equal. It may be equal to hdr_end.
7478 */
7479 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7480
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7481 while (equal < hdr_end) {
7482 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7483 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7484 if (http_is_spht[(unsigned char)*equal++])
7485 continue;
7486 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7487 }
7488
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7489 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7490 * is between <att_beg> and <equal>, both may be identical.
7491 */
7492
7493 /* look for end of cookie if there is an equal sign */
7494 if (equal < hdr_end && *equal == '=') {
7495 /* look for the beginning of the value */
7496 val_beg = equal + 1;
7497 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7498 val_beg++;
7499
7500 /* find the end of the value, respecting quotes */
7501 next = find_cookie_value_end(val_beg, hdr_end);
7502
7503 /* make val_end point to the first white space or delimitor after the value */
7504 val_end = next;
7505 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7506 val_end--;
7507 } else {
7508 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7509 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7510
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7511 /* We have nothing to do with attributes beginning with '$'. However,
7512 * they will automatically be removed if a header before them is removed,
7513 * since they're supposed to be linked together.
7514 */
7515 if (*att_beg == '$')
7516 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7517
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7518 /* Ignore cookies with no equal sign */
7519 if (equal == next) {
7520 /* This is not our cookie, so we must preserve it. But if we already
7521 * scheduled another cookie for removal, we cannot remove the
7522 * complete header, but we can remove the previous block itself.
7523 */
7524 preserve_hdr = 1;
7525 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7526 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7527 val_end += delta;
7528 next += delta;
7529 hdr_end += delta;
7530 hdr_next += delta;
7531 cur_hdr->len += delta;
7532 http_msg_move_end(&txn->req, delta);
7533 prev = del_from;
7534 del_from = NULL;
7535 }
7536 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7537 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7538
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7539 /* if there are spaces around the equal sign, we need to
7540 * strip them otherwise we'll get trouble for cookie captures,
7541 * or even for rewrites. Since this happens extremely rarely,
7542 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7543 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7544 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7545 int stripped_before = 0;
7546 int stripped_after = 0;
7547
7548 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7549 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7550 equal += stripped_before;
7551 val_beg += stripped_before;
7552 }
7553
7554 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7555 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7556 val_beg += stripped_after;
7557 stripped_before += stripped_after;
7558 }
7559
7560 val_end += stripped_before;
7561 next += stripped_before;
7562 hdr_end += stripped_before;
7563 hdr_next += stripped_before;
7564 cur_hdr->len += stripped_before;
7565 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7566 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7567 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7568
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7569 /* First, let's see if we want to capture this cookie. We check
7570 * that we don't already have a client side cookie, because we
7571 * can only capture one. Also as an optimisation, we ignore
7572 * cookies shorter than the declared name.
7573 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7574 if (sess->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7575 (val_end - att_beg >= sess->fe->capture_namelen) &&
7576 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7577 int log_len = val_end - att_beg;
7578
7579 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7580 Alert("HTTP logging : out of memory.\n");
7581 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7582 if (log_len > sess->fe->capture_len)
7583 log_len = sess->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7584 memcpy(txn->cli_cookie, att_beg, log_len);
7585 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7586 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7587 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7588
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7589 /* Persistence cookies in passive, rewrite or insert mode have the
7590 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7591 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7592 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7593 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7594 * For cookies in prefix mode, the form is :
7595 *
7596 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7597 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7598 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
7599 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
7600 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7601 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7602
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7603 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7604 * have the server ID between val_beg and delim, and the original cookie between
7605 * delim+1 and val_end. Otherwise, delim==val_end :
7606 *
7607 * Cookie: NAME=SRV; # in all but prefix modes
7608 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7609 * | || || | |+-> next
7610 * | || || | +--> val_end
7611 * | || || +---------> delim
7612 * | || |+------------> val_beg
7613 * | || +-------------> att_end = equal
7614 * | |+-----------------> att_beg
7615 * | +------------------> prev
7616 * +-------------------------> hdr_beg
7617 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7618
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7619 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7620 for (delim = val_beg; delim < val_end; delim++)
7621 if (*delim == COOKIE_DELIM)
7622 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7623 } else {
7624 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7625 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7626 /* Now check if the cookie contains a date field, which would
7627 * appear after a vertical bar ('|') just after the server name
7628 * and before the delimiter.
7629 */
7630 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7631 if (vbar1) {
7632 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7633 * right is the last seen date. It is a base64 encoded
7634 * 30-bit value representing the UNIX date since the
7635 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7636 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7637 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7638 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7639 if (val_end - vbar1 >= 5) {
7640 val = b64tos30(vbar1);
7641 if (val > 0)
7642 txn->cookie_last_date = val << 2;
7643 }
7644 /* look for a second vertical bar */
7645 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7646 if (vbar1 && (val_end - vbar1 > 5)) {
7647 val = b64tos30(vbar1 + 1);
7648 if (val > 0)
7649 txn->cookie_first_date = val << 2;
7650 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7651 }
7652 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7653
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7654 /* if the cookie has an expiration date and the proxy wants to check
7655 * it, then we do that now. We first check if the cookie is too old,
7656 * then only if it has expired. We detect strict overflow because the
7657 * time resolution here is not great (4 seconds). Cookies with dates
7658 * in the future are ignored if their offset is beyond one day. This
7659 * allows an admin to fix timezone issues without expiring everyone
7660 * and at the same time avoids keeping unwanted side effects for too
7661 * long.
7662 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7663 if (txn->cookie_first_date && s->be->cookie_maxlife &&
7664 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7665 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7666 txn->flags &= ~TX_CK_MASK;
7667 txn->flags |= TX_CK_OLD;
7668 delim = val_beg; // let's pretend we have not found the cookie
7669 txn->cookie_first_date = 0;
7670 txn->cookie_last_date = 0;
7671 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7672 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
7673 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7674 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7675 txn->flags &= ~TX_CK_MASK;
7676 txn->flags |= TX_CK_EXPIRED;
7677 delim = val_beg; // let's pretend we have not found the cookie
7678 txn->cookie_first_date = 0;
7679 txn->cookie_last_date = 0;
7680 }
7681
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7682 /* Here, we'll look for the first running server which supports the cookie.
7683 * This allows to share a same cookie between several servers, for example
7684 * to dedicate backup servers to specific servers only.
7685 * However, to prevent clients from sticking to cookie-less backup server
7686 * when they have incidentely learned an empty cookie, we simply ignore
7687 * empty cookies and mark them as invalid.
7688 * The same behaviour is applied when persistence must be ignored.
7689 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7690 if ((delim == val_beg) || (s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7691 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7692
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7693 while (srv) {
7694 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7695 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7696 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7697 (s->be->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7698 (s->flags & SF_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7699 /* we found the server and we can use it */
7700 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7701 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7702 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7703 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7704 break;
7705 } else {
7706 /* we found a server, but it's down,
7707 * mark it as such and go on in case
7708 * another one is available.
7709 */
7710 txn->flags &= ~TX_CK_MASK;
7711 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7712 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7713 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7714 srv = srv->next;
7715 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7716
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7717 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7718 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7719 txn->flags &= ~TX_CK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7720 if ((s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7721 txn->flags |= TX_CK_UNUSED;
7722 else
7723 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7724 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7725
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7726 /* depending on the cookie mode, we may have to either :
7727 * - delete the complete cookie if we're in insert+indirect mode, so that
7728 * the server never sees it ;
7729 * - remove the server id from the cookie value, and tag the cookie as an
7730 * application cookie so that it does not get accidentely removed later,
7731 * if we're in cookie prefix mode
7732 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7733 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7734 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7735
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7736 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7737 val_end += delta;
7738 next += delta;
7739 hdr_end += delta;
7740 hdr_next += delta;
7741 cur_hdr->len += delta;
7742 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7743
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7744 del_from = NULL;
7745 preserve_hdr = 1; /* we want to keep this cookie */
7746 }
7747 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7748 (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]7749 del_from = prev;
7750 }
7751 } else {
7752 /* This is not our cookie, so we must preserve it. But if we already
7753 * scheduled another cookie for removal, we cannot remove the
7754 * complete header, but we can remove the previous block itself.
7755 */
7756 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7757
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7758 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7759 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7760 if (att_beg >= del_from)
7761 att_beg += delta;
7762 if (att_end >= del_from)
7763 att_end += delta;
7764 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7765 val_end += delta;
7766 next += delta;
7767 hdr_end += delta;
7768 hdr_next += delta;
7769 cur_hdr->len += delta;
7770 http_msg_move_end(&txn->req, delta);
7771 prev = del_from;
7772 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7773 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7774 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7775
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7776 /* continue with next cookie on this header line */
7777 att_beg = next;
7778 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7779
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7780 /* There are no more cookies on this line.
7781 * We may still have one (or several) marked for deletion at the
7782 * end of the line. We must do this now in two ways :
7783 * - if some cookies must be preserved, we only delete from the
7784 * mark to the end of line ;
7785 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7786 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7787 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7788 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7789 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7790 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7791 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7792 cur_hdr->len += delta;
7793 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7794 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7795
7796 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7797 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7798 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7799 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7800 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7801 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7802 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7803 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7804 }
7805
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7806 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7807 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7808 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7809}
7810
7811
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7812/* Iterate the same filter through all response headers contained in <rtr>.
7813 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7814 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7815int 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]7816{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7817 char *cur_ptr, *cur_end, *cur_next;
7818 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7819 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7820 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7821 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7822
7823 last_hdr = 0;
7824
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7825 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7826 old_idx = 0;
7827
7828 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7829 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7830 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7831 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7832 (exp->action == ACT_ALLOW ||
7833 exp->action == ACT_DENY))
7834 return 0;
7835
7836 cur_idx = txn->hdr_idx.v[old_idx].next;
7837 if (!cur_idx)
7838 break;
7839
7840 cur_hdr = &txn->hdr_idx.v[cur_idx];
7841 cur_ptr = cur_next;
7842 cur_end = cur_ptr + cur_hdr->len;
7843 cur_next = cur_end + cur_hdr->cr + 1;
7844
7845 /* Now we have one header between cur_ptr and cur_end,
7846 * and the next header starts at cur_next.
7847 */
7848
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7849 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]7850 switch (exp->action) {
7851 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7852 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7853 last_hdr = 1;
7854 break;
7855
7856 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7857 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7858 last_hdr = 1;
7859 break;
7860
7861 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7862 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7863 if (trash.len < 0)
7864 return -1;
7865
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7866 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7867 /* FIXME: if the user adds a newline in the replacement, the
7868 * index will not be recalculated for now, and the new line
7869 * will not be counted as a new header.
7870 */
7871
7872 cur_end += delta;
7873 cur_next += delta;
7874 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7875 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7876 break;
7877
7878 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7879 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7880 cur_next += delta;
7881
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7882 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7883 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7884 txn->hdr_idx.used--;
7885 cur_hdr->len = 0;
7886 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7887 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7888 break;
7889
7890 }
7891 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7892
7893 /* keep the link from this header to next one in case of later
7894 * removal of next header.
7895 */
7896 old_idx = cur_idx;
7897 }
7898 return 0;
7899}
7900
7901
7902/* Apply the filter to the status line in the response buffer <rtr>.
7903 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7904 * or -1 if a replacement resulted in an invalid status line.
7905 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7906int 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]7907{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7908 char *cur_ptr, *cur_end;
7909 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7910 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7911 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7912
7913
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7914 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7915 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7916 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7917 (exp->action == ACT_ALLOW ||
7918 exp->action == ACT_DENY))
7919 return 0;
7920 else if (exp->action == ACT_REMOVE)
7921 return 0;
7922
7923 done = 0;
7924
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7925 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7926 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7927
7928 /* Now we have the status line between cur_ptr and cur_end */
7929
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7930 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]7931 switch (exp->action) {
7932 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7933 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7934 done = 1;
7935 break;
7936
7937 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7938 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7939 done = 1;
7940 break;
7941
7942 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7943 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7944 if (trash.len < 0)
7945 return -1;
7946
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7947 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7948 /* FIXME: if the user adds a newline in the replacement, the
7949 * index will not be recalculated for now, and the new line
7950 * will not be counted as a new header.
7951 */
7952
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7953 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7954 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7955 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7956 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7957 cur_ptr, cur_end + 1,
7958 NULL, NULL);
7959 if (unlikely(!cur_end))
7960 return -1;
7961
7962 /* we have a full respnse and we know that we have either a CR
7963 * or an LF at <ptr>.
7964 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7965 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]7966 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]7967 /* there is no point trying this regex on headers */
7968 return 1;
7969 }
7970 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7971 return done;
7972}
7973
7974
7975
7976/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7977 * 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]7978 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7979 * unparsable response.
7980 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7981int apply_filters_to_response(struct stream *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7982{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7983 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7984 struct http_txn *txn = s->txn;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7985 struct hdr_exp *exp;
7986
7987 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7988 int ret;
7989
7990 /*
7991 * The interleaving of transformations and verdicts
7992 * makes it difficult to decide to continue or stop
7993 * the evaluation.
7994 */
7995
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7996 if (txn->flags & TX_SVDENY)
7997 break;
7998
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7999 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8000 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
8001 exp->action == ACT_PASS)) {
8002 exp = exp->next;
8003 continue;
8004 }
8005
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8006 /* if this filter had a condition, evaluate it now and skip to
8007 * next filter if the condition does not match.
8008 */
8009 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]8010 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]8011 ret = acl_pass(ret);
8012 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
8013 ret = !ret;
8014 if (!ret)
8015 continue;
8016 }
8017
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8018 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8019 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8020 if (unlikely(ret < 0))
8021 return -1;
8022
8023 if (likely(ret == 0)) {
8024 /* The filter did not match the response, it can be
8025 * iterated through all headers.
8026 */
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8027 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
8028 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8029 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8030 }
8031 return 0;
8032}
8033
8034
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8035/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]8036 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8037 * desirable to call it only when needed. This function is also used when we
8038 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8039 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8040void manage_server_side_cookies(struct stream *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8041{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8042 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8043 struct session *sess = s->sess;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8044 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8045 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8046 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8047 char *hdr_beg, *hdr_end, *hdr_next;
8048 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8049
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8050 /* Iterate through the headers.
8051 * we start with the start line.
8052 */
8053 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8054 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8055
8056 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
8057 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8058 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8059
8060 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8061 hdr_beg = hdr_next;
8062 hdr_end = hdr_beg + cur_hdr->len;
8063 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8064
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8065 /* We have one full header between hdr_beg and hdr_end, and the
8066 * next header starts at hdr_next. We're only interested in
8067 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8068 */
8069
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8070 is_cookie2 = 0;
8071 prev = hdr_beg + 10;
8072 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8073 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8074 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
8075 if (!val) {
8076 old_idx = cur_idx;
8077 continue;
8078 }
8079 is_cookie2 = 1;
8080 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8081 }
8082
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8083 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
8084 * <prev> points to the colon.
8085 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8086 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8087
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8088 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
8089 * check-cache is enabled) and we are not interested in checking
8090 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]8091 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]8092 if (s->be->cookie_name == NULL && sess->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8093 return;
8094
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8095 /* OK so now we know we have to process this response cookie.
8096 * The format of the Set-Cookie header is slightly different
8097 * from the format of the Cookie header in that it does not
8098 * support the comma as a cookie delimiter (thus the header
8099 * cannot be folded) because the Expires attribute described in
8100 * the original Netscape's spec may contain an unquoted date
8101 * with a comma inside. We have to live with this because
8102 * many browsers don't support Max-Age and some browsers don't
8103 * support quoted strings. However the Set-Cookie2 header is
8104 * clean.
8105 *
8106 * We have to keep multiple pointers in order to support cookie
8107 * removal at the beginning, middle or end of header without
8108 * corrupting the header (in case of set-cookie2). A special
8109 * pointer, <scav> points to the beginning of the set-cookie-av
8110 * fields after the first semi-colon. The <next> pointer points
8111 * either to the end of line (set-cookie) or next unquoted comma
8112 * (set-cookie2). All of these headers are valid :
8113 *
8114 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
8115 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8116 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8117 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
8118 * | | | | | | | | | |
8119 * | | | | | | | | +-> next hdr_end <--+
8120 * | | | | | | | +------------> scav
8121 * | | | | | | +--------------> val_end
8122 * | | | | | +--------------------> val_beg
8123 * | | | | +----------------------> equal
8124 * | | | +------------------------> att_end
8125 * | | +----------------------------> att_beg
8126 * | +------------------------------> prev
8127 * +-----------------------------------------> hdr_beg
8128 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8129
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8130 for (; prev < hdr_end; prev = next) {
8131 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8132
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8133 /* find att_beg */
8134 att_beg = prev + 1;
8135 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8136 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8137
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8138 /* find att_end : this is the first character after the last non
8139 * space before the equal. It may be equal to hdr_end.
8140 */
8141 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8142
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8143 while (equal < hdr_end) {
8144 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
8145 break;
8146 if (http_is_spht[(unsigned char)*equal++])
8147 continue;
8148 att_end = equal;
8149 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8150
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8151 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8152 * is between <att_beg> and <equal>, both may be identical.
8153 */
8154
8155 /* look for end of cookie if there is an equal sign */
8156 if (equal < hdr_end && *equal == '=') {
8157 /* look for the beginning of the value */
8158 val_beg = equal + 1;
8159 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8160 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8161
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8162 /* find the end of the value, respecting quotes */
8163 next = find_cookie_value_end(val_beg, hdr_end);
8164
8165 /* make val_end point to the first white space or delimitor after the value */
8166 val_end = next;
8167 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8168 val_end--;
8169 } else {
8170 /* <equal> points to next comma, semi-colon or EOL */
8171 val_beg = val_end = next = equal;
8172 }
8173
8174 if (next < hdr_end) {
8175 /* Set-Cookie2 supports multiple cookies, and <next> points to
8176 * a colon or semi-colon before the end. So skip all attr-value
8177 * pairs and look for the next comma. For Set-Cookie, since
8178 * commas are permitted in values, skip to the end.
8179 */
8180 if (is_cookie2)
8181 next = find_hdr_value_end(next, hdr_end);
8182 else
8183 next = hdr_end;
8184 }
8185
8186 /* Now everything is as on the diagram above */
8187
8188 /* Ignore cookies with no equal sign */
8189 if (equal == val_end)
8190 continue;
8191
8192 /* If there are spaces around the equal sign, we need to
8193 * strip them otherwise we'll get trouble for cookie captures,
8194 * or even for rewrites. Since this happens extremely rarely,
8195 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8196 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8197 if (unlikely(att_end != equal || val_beg > equal + 1)) {
8198 int stripped_before = 0;
8199 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8200
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8201 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8202 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8203 equal += stripped_before;
8204 val_beg += stripped_before;
8205 }
8206
8207 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8208 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8209 val_beg += stripped_after;
8210 stripped_before += stripped_after;
8211 }
8212
8213 val_end += stripped_before;
8214 next += stripped_before;
8215 hdr_end += stripped_before;
8216 hdr_next += stripped_before;
8217 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]8218 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8219 }
8220
8221 /* First, let's see if we want to capture this cookie. We check
8222 * that we don't already have a server side cookie, because we
8223 * can only capture one. Also as an optimisation, we ignore
8224 * cookies shorter than the declared name.
8225 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8226 if (sess->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]8227 txn->srv_cookie == NULL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8228 (val_end - att_beg >= sess->fe->capture_namelen) &&
8229 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8230 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]8231 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8232 Alert("HTTP logging : out of memory.\n");
8233 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8234 else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8235 if (log_len > sess->fe->capture_len)
8236 log_len = sess->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8237 memcpy(txn->srv_cookie, att_beg, log_len);
8238 txn->srv_cookie[log_len] = 0;
8239 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8240 }
8241
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8242 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8243 /* now check if we need to process it for persistence */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8244 if (!(s->flags & SF_IGNORE_PRST) &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8245 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
8246 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8247 /* assume passive cookie by default */
8248 txn->flags &= ~TX_SCK_MASK;
8249 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8250
8251 /* If the cookie is in insert mode on a known server, we'll delete
8252 * this occurrence because we'll insert another one later.
8253 * 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]8254 * a direct access.
8255 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8256 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]8257 /* The "preserve" flag was set, we don't want to touch the
8258 * server's cookie.
8259 */
8260 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8261 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8262 ((s->flags & SF_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8263 /* this cookie must be deleted */
8264 if (*prev == ':' && next == hdr_end) {
8265 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8266 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8267 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8268 txn->hdr_idx.used--;
8269 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8270 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8271 hdr_next += delta;
8272 http_msg_move_end(&txn->rsp, delta);
8273 /* note: while both invalid now, <next> and <hdr_end>
8274 * are still equal, so the for() will stop as expected.
8275 */
8276 } else {
8277 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8278 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8279 next = prev;
8280 hdr_end += delta;
8281 hdr_next += delta;
8282 cur_hdr->len += delta;
8283 http_msg_move_end(&txn->rsp, delta);
8284 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8285 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8286 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8287 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8288 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8289 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8290 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8291 * with this server since we know it.
8292 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8293 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8294 next += delta;
8295 hdr_end += delta;
8296 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8297 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8298 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8299
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8300 txn->flags &= ~TX_SCK_MASK;
8301 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8302 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8303 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8304 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8305 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8306 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8307 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8308 next += delta;
8309 hdr_end += delta;
8310 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8311 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8312 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8313
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8314 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8315 txn->flags &= ~TX_SCK_MASK;
8316 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8317 }
8318 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8319 /* that's done for this cookie, check the next one on the same
8320 * line when next != hdr_end (only if is_cookie2).
8321 */
8322 }
8323 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8324 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8325 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8326}
8327
8328
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8329/*
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8330 * Check if response is cacheable or not. Updates s->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8331 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8332void check_response_for_cacheability(struct stream *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8333{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8334 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8335 char *p1, *p2;
8336
8337 char *cur_ptr, *cur_end, *cur_next;
8338 int cur_idx;
8339
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]8340 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8341 return;
8342
8343 /* Iterate through the headers.
8344 * we start with the start line.
8345 */
8346 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8347 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8348
8349 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
8350 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8351 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8352
8353 cur_hdr = &txn->hdr_idx.v[cur_idx];
8354 cur_ptr = cur_next;
8355 cur_end = cur_ptr + cur_hdr->len;
8356 cur_next = cur_end + cur_hdr->cr + 1;
8357
8358 /* We have one full header between cur_ptr and cur_end, and the
8359 * next header starts at cur_next. We're only interested in
8360 * "Cookie:" headers.
8361 */
8362
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8363 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
8364 if (val) {
8365 if ((cur_end - (cur_ptr + val) >= 8) &&
8366 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
8367 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
8368 return;
8369 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8370 }
8371
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8372 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
8373 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8374 continue;
8375
8376 /* OK, right now we know we have a cache-control header at cur_ptr */
8377
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8378 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8379
8380 if (p1 >= cur_end) /* no more info */
8381 continue;
8382
8383 /* p1 is at the beginning of the value */
8384 p2 = p1;
8385
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]8386 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8387 p2++;
8388
8389 /* we have a complete value between p1 and p2 */
8390 if (p2 < cur_end && *p2 == '=') {
8391 /* we have something of the form no-cache="set-cookie" */
8392 if ((cur_end - p1 >= 21) &&
8393 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
8394 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8395 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8396 continue;
8397 }
8398
8399 /* OK, so we know that either p2 points to the end of string or to a comma */
8400 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8401 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8402 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8403 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8404 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8405 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8406 return;
8407 }
8408
8409 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8410 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8411 continue;
8412 }
8413 }
8414}
8415
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8416
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8417/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8418 * 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]8419 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8420 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8421 * 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]8422 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8423 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8424 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8425 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8426int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8427{
8428 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8429 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8430 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8431
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8432 if (!uri_auth)
8433 return 0;
8434
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8435 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]8436 return 0;
8437
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8438 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8439 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8440 return 0;
8441
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8442 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8443 return 0;
8444
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8445 return 1;
8446}
8447
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8448/*
8449 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8450 * By default it tries to report the error position as msg->err_pos. However if
8451 * this one is not set, it will then report msg->next, which is the last known
8452 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8453 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8454 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8455void http_capture_bad_message(struct error_snapshot *es, struct stream *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8456 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8457 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8458{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8459 struct session *sess = strm_sess(s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8460 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8461 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8462
Willy Tarreauf3764b72016-03-31 13:45:10 +0200[diff] [blame]8463 es->len = MIN(chn->buf->i, global.tune.bufsize);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8464 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8465 len1 = MIN(len1, es->len);
8466 len2 = es->len - len1; /* remaining data if buffer wraps */
8467
Willy Tarreauf3764b72016-03-31 13:45:10 +0200[diff] [blame]8468 if (!es->buf)
8469 es->buf = malloc(global.tune.bufsize);
8470
8471 if (es->buf) {
8472 memcpy(es->buf, chn->buf->p, len1);
8473 if (len2)
8474 memcpy(es->buf + len1, chn->buf->data, len2);
8475 }
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8476
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8477 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8478 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8479 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8480 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8481
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8482 es->when = date; // user-visible date
8483 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8484 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8485 es->oe = other_end;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8486 if (objt_conn(sess->origin))
8487 es->src = __objt_conn(sess->origin)->addr.from;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8488 else
8489 memset(&es->src, 0, sizeof(es->src));
8490
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8491 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8492 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8493 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8494 es->s_flags = s->flags;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8495 es->t_flags = s->txn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8496 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8497 es->b_out = chn->buf->o;
8498 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8499 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8500 es->m_clen = msg->chunk_len;
8501 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8502}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8503
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8504/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8505 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8506 * performed over the whole headers. Otherwise it must contain a valid header
8507 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8508 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8509 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8510 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8511 * -1. The value fetch stops at commas, so this function is suited for use with
8512 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8513 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8514 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8515unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8516 struct hdr_idx *idx, int occ,
8517 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8518{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8519 struct hdr_ctx local_ctx;
8520 char *ptr_hist[MAX_HDR_HISTORY];
8521 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8522 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8523 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8524
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8525 if (!ctx) {
8526 local_ctx.idx = 0;
8527 ctx = &local_ctx;
8528 }
8529
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8530 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8531 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8532 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8533 occ--;
8534 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8535 *vptr = ctx->line + ctx->val;
8536 *vlen = ctx->vlen;
8537 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8538 }
8539 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8540 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8541 }
8542
8543 /* negative occurrence, we scan all the list then walk back */
8544 if (-occ > MAX_HDR_HISTORY)
8545 return 0;
8546
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8547 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8548 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8549 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8550 len_hist[hist_ptr] = ctx->vlen;
8551 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8552 hist_ptr = 0;
8553 found++;
8554 }
8555 if (-occ > found)
8556 return 0;
8557 /* 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]8558 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8559 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8560 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8561 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8562 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8563 if (hist_ptr >= MAX_HDR_HISTORY)
8564 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8565 *vptr = ptr_hist[hist_ptr];
8566 *vlen = len_hist[hist_ptr];
8567 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8568}
8569
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8570/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8571 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8572 * performed over the whole headers. Otherwise it must contain a valid header
8573 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8574 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8575 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8576 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8577 * -1. This function differs from http_get_hdr() in that it only returns full
8578 * line header values and does not stop at commas.
8579 * The return value is 0 if nothing was found, or non-zero otherwise.
8580 */
8581unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8582 struct hdr_idx *idx, int occ,
8583 struct hdr_ctx *ctx, char **vptr, int *vlen)
8584{
8585 struct hdr_ctx local_ctx;
8586 char *ptr_hist[MAX_HDR_HISTORY];
8587 int len_hist[MAX_HDR_HISTORY];
8588 unsigned int hist_ptr;
8589 int found;
8590
8591 if (!ctx) {
8592 local_ctx.idx = 0;
8593 ctx = &local_ctx;
8594 }
8595
8596 if (occ >= 0) {
8597 /* search from the beginning */
8598 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8599 occ--;
8600 if (occ <= 0) {
8601 *vptr = ctx->line + ctx->val;
8602 *vlen = ctx->vlen;
8603 return 1;
8604 }
8605 }
8606 return 0;
8607 }
8608
8609 /* negative occurrence, we scan all the list then walk back */
8610 if (-occ > MAX_HDR_HISTORY)
8611 return 0;
8612
8613 found = hist_ptr = 0;
8614 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8615 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8616 len_hist[hist_ptr] = ctx->vlen;
8617 if (++hist_ptr >= MAX_HDR_HISTORY)
8618 hist_ptr = 0;
8619 found++;
8620 }
8621 if (-occ > found)
8622 return 0;
Nenad Merdanovic69ad4b92016-03-29 13:14:30 +0200[diff] [blame]8623
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8624 /* 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]8625 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8626 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8627 * to remain in the 0..9 range.
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8628 */
Nenad Merdanovic69ad4b92016-03-29 13:14:30 +0200[diff] [blame]8629 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8630 if (hist_ptr >= MAX_HDR_HISTORY)
8631 hist_ptr -= MAX_HDR_HISTORY;
8632 *vptr = ptr_hist[hist_ptr];
8633 *vlen = len_hist[hist_ptr];
8634 return 1;
8635}
8636
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8637/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8638 * Print a debug line with a header. Always stop at the first CR or LF char,
8639 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8640 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8641 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8642void debug_hdr(const char *dir, struct stream *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8643{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8644 struct session *sess = strm_sess(s);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8645 int max;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8646
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8647 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8648 dir,
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8649 objt_conn(sess->origin) ? (unsigned short)objt_conn(sess->origin)->t.sock.fd : -1,
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]8650 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]8651
8652 for (max = 0; start + max < end; max++)
8653 if (start[max] == '\r' || start[max] == '\n')
8654 break;
8655
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8656 UBOUND(max, trash.size - trash.len - 3);
8657 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8658 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8659 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8660}
8661
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8662
8663/* Allocate a new HTTP transaction for stream <s> unless there is one already.
8664 * The hdr_idx is allocated as well. In case of allocation failure, everything
8665 * allocated is freed and NULL is returned. Otherwise the new transaction is
8666 * assigned to the stream and returned.
8667 */
8668struct http_txn *http_alloc_txn(struct stream *s)
8669{
8670 struct http_txn *txn = s->txn;
8671
8672 if (txn)
8673 return txn;
8674
8675 txn = pool_alloc2(pool2_http_txn);
8676 if (!txn)
8677 return txn;
8678
8679 txn->hdr_idx.size = global.tune.max_http_hdr;
8680 txn->hdr_idx.v = pool_alloc2(pool2_hdr_idx);
8681 if (!txn->hdr_idx.v) {
8682 pool_free2(pool2_http_txn, txn);
8683 return NULL;
8684 }
8685
8686 s->txn = txn;
8687 return txn;
8688}
8689
Thierry FOURNIERfd50f0b2015-09-25 18:53:18 +0200[diff] [blame]8690void http_txn_reset_req(struct http_txn *txn)
8691{
8692 txn->req.flags = 0;
8693 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
8694 txn->req.next = 0;
8695 txn->req.chunk_len = 0LL;
8696 txn->req.body_len = 0LL;
8697 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8698}
8699
8700void http_txn_reset_res(struct http_txn *txn)
8701{
8702 txn->rsp.flags = 0;
8703 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
8704 txn->rsp.next = 0;
8705 txn->rsp.chunk_len = 0LL;
8706 txn->rsp.body_len = 0LL;
8707 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
8708}
8709
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8710/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8711 * Initialize a new HTTP transaction for stream <s>. It is assumed that all
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8712 * the required fields are properly allocated and that we only need to (re)init
8713 * them. This should be used before processing any new request.
8714 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8715void http_init_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8716{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8717 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8718 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8719
8720 txn->flags = 0;
8721 txn->status = -1;
8722
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8723 txn->cookie_first_date = 0;
8724 txn->cookie_last_date = 0;
8725
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8726 txn->srv_cookie = NULL;
8727 txn->cli_cookie = NULL;
8728 txn->uri = NULL;
8729
Thierry FOURNIERfd50f0b2015-09-25 18:53:18 +0200[diff] [blame]8730 http_txn_reset_req(txn);
8731 http_txn_reset_res(txn);
8732
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8733 txn->req.chn = &s->req;
8734 txn->rsp.chn = &s->res;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8735
8736 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8737
8738 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8739 if (fe->options2 & PR_O2_REQBUG_OK)
8740 txn->req.err_pos = -1; /* let buggy requests pass */
8741
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8742 if (txn->hdr_idx.v)
8743 hdr_idx_init(&txn->hdr_idx);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]8744
8745 vars_init(&s->vars_txn, SCOPE_TXN);
8746 vars_init(&s->vars_reqres, SCOPE_REQ);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8747}
8748
8749/* to be used at the end of a transaction */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8750void http_end_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8751{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8752 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8753 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8754
8755 /* these ones will have been dynamically allocated */
8756 pool_free2(pool2_requri, txn->uri);
8757 pool_free2(pool2_capture, txn->cli_cookie);
8758 pool_free2(pool2_capture, txn->srv_cookie);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8759 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8760
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8761 s->unique_id = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8762 txn->uri = NULL;
8763 txn->srv_cookie = NULL;
8764 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8765
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8766 if (s->req_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8767 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8768 for (h = fe->req_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8769 pool_free2(h->pool, s->req_cap[h->index]);
8770 memset(s->req_cap, 0, fe->nb_req_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8771 }
8772
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8773 if (s->res_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8774 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8775 for (h = fe->rsp_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8776 pool_free2(h->pool, s->res_cap[h->index]);
8777 memset(s->res_cap, 0, fe->nb_rsp_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8778 }
8779
Willy Tarreau6204cd92016-03-10 16:33:04 +0100[diff] [blame]8780 vars_prune(&s->vars_txn, s->sess, s);
8781 vars_prune(&s->vars_reqres, s->sess, s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8782}
8783
8784/* to be used at the end of a transaction to prepare a new one */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8785void http_reset_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8786{
8787 http_end_txn(s);
8788 http_init_txn(s);
8789
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]8790 /* reinitialise the current rule list pointer to NULL. We are sure that
8791 * any rulelist match the NULL pointer.
8792 */
8793 s->current_rule_list = NULL;
8794
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8795 s->be = strm_fe(s);
8796 s->logs.logwait = strm_fe(s)->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8797 s->logs.level = 0;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8798 stream_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8799 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8800 /* re-init store persistence */
8801 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]8802 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8803
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8804 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8805
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8806 s->req.flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8807
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8808 /* We must trim any excess data from the response buffer, because we
8809 * may have blocked an invalid response from a server that we don't
8810 * want to accidentely forward once we disable the analysers, nor do
8811 * we want those data to come along with next response. A typical
8812 * example of such data would be from a buggy server responding to
8813 * a HEAD with some data, or sending more than the advertised
8814 * content-length.
8815 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8816 if (unlikely(s->res.buf->i))
8817 s->res.buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8818
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8819 s->req.rto = strm_fe(s)->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8820 s->req.wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8821
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8822 s->res.rto = TICK_ETERNITY;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8823 s->res.wto = strm_fe(s)->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8824
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8825 s->req.rex = TICK_ETERNITY;
8826 s->req.wex = TICK_ETERNITY;
8827 s->req.analyse_exp = TICK_ETERNITY;
8828 s->res.rex = TICK_ETERNITY;
8829 s->res.wex = TICK_ETERNITY;
8830 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8831}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8832
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8833void free_http_res_rules(struct list *r)
8834{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8835 struct act_rule *tr, *pr;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8836
8837 list_for_each_entry_safe(pr, tr, r, list) {
8838 LIST_DEL(&pr->list);
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8839 regex_free(&pr->arg.hdr_add.re);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8840 free(pr);
8841 }
8842}
8843
8844void free_http_req_rules(struct list *r)
8845{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8846 struct act_rule *tr, *pr;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8847
8848 list_for_each_entry_safe(pr, tr, r, list) {
8849 LIST_DEL(&pr->list);
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8850 if (pr->action == ACT_HTTP_REQ_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8851 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8852
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8853 regex_free(&pr->arg.hdr_add.re);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8854 free(pr);
8855 }
8856}
8857
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8858/* parse an "http-request" rule */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8859struct 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]8860{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8861 struct act_rule *rule;
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]8862 struct action_kw *custom = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8863 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8864 char *error;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8865
Vincent Bernat02779b62016-04-03 13:48:43 +0200[diff] [blame]8866 rule = calloc(1, sizeof(*rule));
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8867 if (!rule) {
8868 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8869 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8870 }
8871
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]8872 rule->deny_status = HTTP_ERR_403;
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8873 if (!strcmp(args[0], "allow")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8874 rule->action = ACT_ACTION_ALLOW;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8875 cur_arg = 1;
Willy Tarreau5bd67592014-04-28 22:00:46 +0200[diff] [blame]8876 } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block")) {
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]8877 int code;
8878 int hc;
8879
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8880 rule->action = ACT_ACTION_DENY;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8881 cur_arg = 1;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]8882 if (strcmp(args[cur_arg], "deny_status") == 0) {
8883 cur_arg++;
8884 if (!args[cur_arg]) {
8885 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing status code.\n",
8886 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
8887 goto out_err;
8888 }
8889
8890 code = atol(args[cur_arg]);
8891 cur_arg++;
8892 for (hc = 0; hc < HTTP_ERR_SIZE; hc++) {
8893 if (http_err_codes[hc] == code) {
8894 rule->deny_status = hc;
8895 break;
8896 }
8897 }
8898
8899 if (hc >= HTTP_ERR_SIZE) {
8900 Warning("parsing [%s:%d] : status code %d not handled, using default code 403.\n",
8901 file, linenum, code);
8902 }
8903 }
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8904 } else if (!strcmp(args[0], "tarpit")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8905 rule->action = ACT_HTTP_REQ_TARPIT;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8906 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8907 } else if (!strcmp(args[0], "auth")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8908 rule->action = ACT_HTTP_REQ_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8909 cur_arg = 1;
8910
8911 while(*args[cur_arg]) {
8912 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8913 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8914 cur_arg+=2;
8915 continue;
8916 } else
8917 break;
8918 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8919 } else if (!strcmp(args[0], "set-nice")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8920 rule->action = ACT_HTTP_SET_NICE;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8921 cur_arg = 1;
8922
8923 if (!*args[cur_arg] ||
8924 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8925 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
8926 file, linenum, args[0]);
8927 goto out_err;
8928 }
8929 rule->arg.nice = atoi(args[cur_arg]);
8930 if (rule->arg.nice < -1024)
8931 rule->arg.nice = -1024;
8932 else if (rule->arg.nice > 1024)
8933 rule->arg.nice = 1024;
8934 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8935 } else if (!strcmp(args[0], "set-tos")) {
8936#ifdef IP_TOS
8937 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8938 rule->action = ACT_HTTP_SET_TOS;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8939 cur_arg = 1;
8940
8941 if (!*args[cur_arg] ||
8942 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8943 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8944 file, linenum, args[0]);
8945 goto out_err;
8946 }
8947
8948 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8949 if (err && *err != '\0') {
8950 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8951 file, linenum, err, args[0]);
8952 goto out_err;
8953 }
8954 cur_arg++;
8955#else
8956 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8957 goto out_err;
8958#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8959 } else if (!strcmp(args[0], "set-mark")) {
8960#ifdef SO_MARK
8961 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8962 rule->action = ACT_HTTP_SET_MARK;
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8963 cur_arg = 1;
8964
8965 if (!*args[cur_arg] ||
8966 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8967 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8968 file, linenum, args[0]);
8969 goto out_err;
8970 }
8971
8972 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8973 if (err && *err != '\0') {
8974 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8975 file, linenum, err, args[0]);
8976 goto out_err;
8977 }
8978 cur_arg++;
8979 global.last_checks |= LSTCHK_NETADM;
8980#else
8981 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8982 goto out_err;
8983#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8984 } else if (!strcmp(args[0], "set-log-level")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8985 rule->action = ACT_HTTP_SET_LOGL;
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8986 cur_arg = 1;
8987
8988 if (!*args[cur_arg] ||
8989 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8990 bad_log_level:
8991 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
8992 file, linenum, args[0]);
8993 goto out_err;
8994 }
8995 if (strcmp(args[cur_arg], "silent") == 0)
8996 rule->arg.loglevel = -1;
8997 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
8998 goto bad_log_level;
8999 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9000 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9001 rule->action = *args[0] == 'a' ? ACT_HTTP_ADD_HDR : ACT_HTTP_SET_HDR;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9002 cur_arg = 1;
9003
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]9004 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9005 (*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]9006 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9007 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9008 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]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 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]9014
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9015 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9016 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]9017 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9018 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9019 free(proxy->conf.lfs_file);
9020 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9021 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9022 cur_arg += 2;
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9023 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9024 rule->action = args[0][8] == 'h' ? ACT_HTTP_REPLACE_HDR : ACT_HTTP_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9025 cur_arg = 1;
9026
9027 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann92df3702014-06-24 11:10:00 +0200[diff] [blame]9028 (*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]9029 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
9030 file, linenum, args[0]);
9031 goto out_err;
9032 }
9033
9034 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9035 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9036 LIST_INIT(&rule->arg.hdr_add.fmt);
9037
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9038 error = NULL;
9039 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9040 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9041 args[cur_arg + 1], error);
9042 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9043 goto out_err;
9044 }
9045
9046 proxy->conf.args.ctx = ARGC_HRQ;
9047 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9048 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9049 file, linenum);
9050
9051 free(proxy->conf.lfs_file);
9052 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9053 proxy->conf.lfs_line = proxy->conf.args.line;
9054 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9055 } else if (strcmp(args[0], "del-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9056 rule->action = ACT_HTTP_DEL_HDR;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9057 cur_arg = 1;
9058
9059 if (!*args[cur_arg] ||
9060 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9061 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9062 file, linenum, args[0]);
9063 goto out_err;
9064 }
9065
9066 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9067 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9068
9069 proxy->conf.args.ctx = ARGC_HRQ;
9070 free(proxy->conf.lfs_file);
9071 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9072 proxy->conf.lfs_line = proxy->conf.args.line;
9073 cur_arg += 1;
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9074 } else if (strncmp(args[0], "track-sc", 8) == 0 &&
9075 args[0][9] == '\0' && args[0][8] >= '0' &&
Willy Tarreaue1cfc1f2014-10-17 11:53:05 +0200[diff] [blame]9076 args[0][8] < '0' + MAX_SESS_STKCTR) { /* track-sc 0..9 */
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9077 struct sample_expr *expr;
9078 unsigned int where;
9079 char *err = NULL;
9080
9081 cur_arg = 1;
9082 proxy->conf.args.ctx = ARGC_TRK;
9083
9084 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9085 if (!expr) {
9086 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9087 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9088 free(err);
9089 goto out_err;
9090 }
9091
9092 where = 0;
9093 if (proxy->cap & PR_CAP_FE)
9094 where |= SMP_VAL_FE_HRQ_HDR;
9095 if (proxy->cap & PR_CAP_BE)
9096 where |= SMP_VAL_BE_HRQ_HDR;
9097
9098 if (!(expr->fetch->val & where)) {
9099 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule :"
9100 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9101 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9102 args[cur_arg-1], sample_src_names(expr->fetch->use));
9103 free(expr);
9104 goto out_err;
9105 }
9106
9107 if (strcmp(args[cur_arg], "table") == 0) {
9108 cur_arg++;
9109 if (!args[cur_arg]) {
9110 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing table name.\n",
9111 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9112 free(expr);
9113 goto out_err;
9114 }
9115 /* we copy the table name for now, it will be resolved later */
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]9116 rule->arg.trk_ctr.table.n = strdup(args[cur_arg]);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9117 cur_arg++;
9118 }
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]9119 rule->arg.trk_ctr.expr = expr;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9120 rule->action = ACT_ACTION_TRK_SC0 + args[0][8] - '0';
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9121 } else if (strcmp(args[0], "redirect") == 0) {
9122 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]9123 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9124
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9125 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]9126 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9127 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9128 goto out_err;
9129 }
9130
9131 /* this redirect rule might already contain a parsed condition which
9132 * we'll pass to the http-request rule.
9133 */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9134 rule->action = ACT_HTTP_REDIR;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9135 rule->arg.redir = redir;
9136 rule->cond = redir->cond;
9137 redir->cond = NULL;
9138 cur_arg = 2;
9139 return rule;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9140 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9141 /* http-request add-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9142 rule->action = ACT_HTTP_ADD_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9143 /*
9144 * '+ 8' for 'add-acl('
9145 * '- 9' for 'add-acl(' + trailing ')'
9146 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9147 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9148
9149 cur_arg = 1;
9150
9151 if (!*args[cur_arg] ||
9152 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9153 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9154 file, linenum, args[0]);
9155 goto out_err;
9156 }
9157
9158 LIST_INIT(&rule->arg.map.key);
9159 proxy->conf.args.ctx = ARGC_HRQ;
9160 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9161 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9162 file, linenum);
9163 free(proxy->conf.lfs_file);
9164 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9165 proxy->conf.lfs_line = proxy->conf.args.line;
9166 cur_arg += 1;
9167 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9168 /* http-request del-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9169 rule->action = ACT_HTTP_DEL_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9170 /*
9171 * '+ 8' for 'del-acl('
9172 * '- 9' for 'del-acl(' + trailing ')'
9173 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9174 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9175
9176 cur_arg = 1;
9177
9178 if (!*args[cur_arg] ||
9179 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9180 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9181 file, linenum, args[0]);
9182 goto out_err;
9183 }
9184
9185 LIST_INIT(&rule->arg.map.key);
9186 proxy->conf.args.ctx = ARGC_HRQ;
9187 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9188 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9189 file, linenum);
9190 free(proxy->conf.lfs_file);
9191 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9192 proxy->conf.lfs_line = proxy->conf.args.line;
9193 cur_arg += 1;
9194 } else if (strncmp(args[0], "del-map", 7) == 0) {
9195 /* http-request del-map(<reference (map name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9196 rule->action = ACT_HTTP_DEL_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9197 /*
9198 * '+ 8' for 'del-map('
9199 * '- 9' for 'del-map(' + trailing ')'
9200 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9201 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9202
9203 cur_arg = 1;
9204
9205 if (!*args[cur_arg] ||
9206 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9207 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9208 file, linenum, args[0]);
9209 goto out_err;
9210 }
9211
9212 LIST_INIT(&rule->arg.map.key);
9213 proxy->conf.args.ctx = ARGC_HRQ;
9214 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9215 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9216 file, linenum);
9217 free(proxy->conf.lfs_file);
9218 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9219 proxy->conf.lfs_line = proxy->conf.args.line;
9220 cur_arg += 1;
9221 } else if (strncmp(args[0], "set-map", 7) == 0) {
9222 /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9223 rule->action = ACT_HTTP_SET_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9224 /*
9225 * '+ 8' for 'set-map('
9226 * '- 9' for 'set-map(' + trailing ')'
9227 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9228 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9229
9230 cur_arg = 1;
9231
9232 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9233 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9234 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9235 file, linenum, args[0]);
9236 goto out_err;
9237 }
9238
9239 LIST_INIT(&rule->arg.map.key);
9240 LIST_INIT(&rule->arg.map.value);
9241 proxy->conf.args.ctx = ARGC_HRQ;
9242
9243 /* key pattern */
9244 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9245 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9246 file, linenum);
9247
9248 /* value pattern */
9249 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9250 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9251 file, linenum);
9252 free(proxy->conf.lfs_file);
9253 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9254 proxy->conf.lfs_line = proxy->conf.args.line;
9255
9256 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9257 } else if (((custom = action_http_req_custom(args[0])) != NULL)) {
9258 char *errmsg = NULL;
9259 cur_arg = 1;
9260 /* try in the module list */
Thierry FOURNIER5563e4b2015-08-14 19:20:07 +0200[diff] [blame]9261 rule->from = ACT_F_HTTP_REQ;
Thierry FOURNIER85c6c972015-09-22 19:14:35 +0200[diff] [blame]9262 rule->kw = custom;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]9263 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) == ACT_RET_PRS_ERR) {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9264 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9265 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9266 free(errmsg);
9267 goto out_err;
9268 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9269 } else {
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9270 action_build_list(&http_req_keywords.list, &trash);
9271 Alert("parsing [%s:%d]: 'http-request' expects 'allow', 'deny', 'auth', 'redirect', "
9272 "'tarpit', 'add-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', "
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]9273 "'set-tos', 'set-mark', 'set-log-level', 'add-acl', 'del-acl', 'del-map', 'set-map', 'track-sc*'"
William Lallemand2e785f22016-05-25 01:48:42 +0200[diff] [blame]9274 "%s%s, but got '%s'%s.\n",
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9275 file, linenum, *trash.str ? ", " : "", trash.str, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9276 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9277 }
9278
9279 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9280 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9281 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9282
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9283 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9284 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
9285 file, linenum, args[0], errmsg);
9286 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9287 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9288 }
9289 rule->cond = cond;
9290 }
9291 else if (*args[cur_arg]) {
9292 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
9293 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9294 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9295 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9296 }
9297
9298 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9299 out_err:
9300 free(rule);
9301 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9302}
9303
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9304/* parse an "http-respose" rule */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9305struct 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]9306{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9307 struct act_rule *rule;
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]9308 struct action_kw *custom = NULL;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9309 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9310 char *error;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9311
9312 rule = calloc(1, sizeof(*rule));
9313 if (!rule) {
9314 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
9315 goto out_err;
9316 }
9317
9318 if (!strcmp(args[0], "allow")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9319 rule->action = ACT_ACTION_ALLOW;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9320 cur_arg = 1;
9321 } else if (!strcmp(args[0], "deny")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9322 rule->action = ACT_ACTION_DENY;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9323 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9324 } else if (!strcmp(args[0], "set-nice")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9325 rule->action = ACT_HTTP_SET_NICE;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9326 cur_arg = 1;
9327
9328 if (!*args[cur_arg] ||
9329 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9330 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
9331 file, linenum, args[0]);
9332 goto out_err;
9333 }
9334 rule->arg.nice = atoi(args[cur_arg]);
9335 if (rule->arg.nice < -1024)
9336 rule->arg.nice = -1024;
9337 else if (rule->arg.nice > 1024)
9338 rule->arg.nice = 1024;
9339 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9340 } else if (!strcmp(args[0], "set-tos")) {
9341#ifdef IP_TOS
9342 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9343 rule->action = ACT_HTTP_SET_TOS;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9344 cur_arg = 1;
9345
9346 if (!*args[cur_arg] ||
9347 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9348 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9349 file, linenum, args[0]);
9350 goto out_err;
9351 }
9352
9353 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9354 if (err && *err != '\0') {
9355 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9356 file, linenum, err, args[0]);
9357 goto out_err;
9358 }
9359 cur_arg++;
9360#else
9361 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9362 goto out_err;
9363#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9364 } else if (!strcmp(args[0], "set-mark")) {
9365#ifdef SO_MARK
9366 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9367 rule->action = ACT_HTTP_SET_MARK;
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9368 cur_arg = 1;
9369
9370 if (!*args[cur_arg] ||
9371 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9372 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9373 file, linenum, args[0]);
9374 goto out_err;
9375 }
9376
9377 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9378 if (err && *err != '\0') {
9379 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9380 file, linenum, err, args[0]);
9381 goto out_err;
9382 }
9383 cur_arg++;
9384 global.last_checks |= LSTCHK_NETADM;
9385#else
9386 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9387 goto out_err;
9388#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9389 } else if (!strcmp(args[0], "set-log-level")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9390 rule->action = ACT_HTTP_SET_LOGL;
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9391 cur_arg = 1;
9392
9393 if (!*args[cur_arg] ||
9394 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9395 bad_log_level:
9396 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
9397 file, linenum, args[0]);
9398 goto out_err;
9399 }
9400 if (strcmp(args[cur_arg], "silent") == 0)
9401 rule->arg.loglevel = -1;
Ruoshan Huangdd016782016-06-15 22:16:03 +0800[diff] [blame]9402 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9403 goto bad_log_level;
9404 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9405 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9406 rule->action = *args[0] == 'a' ? ACT_HTTP_ADD_HDR : ACT_HTTP_SET_HDR;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9407 cur_arg = 1;
9408
9409 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9410 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9411 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9412 file, linenum, args[0]);
9413 goto out_err;
9414 }
9415
9416 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9417 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9418 LIST_INIT(&rule->arg.hdr_add.fmt);
9419
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9420 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9421 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]9422 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9423 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9424 free(proxy->conf.lfs_file);
9425 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9426 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9427 cur_arg += 2;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9428 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9429 rule->action = args[0][8] == 'h' ? ACT_HTTP_REPLACE_HDR : ACT_HTTP_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9430 cur_arg = 1;
9431
9432 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann12cb00b2014-08-08 17:29:06 +0200[diff] [blame]9433 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
9434 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 3 arguments.\n",
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9435 file, linenum, args[0]);
9436 goto out_err;
9437 }
9438
9439 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9440 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9441 LIST_INIT(&rule->arg.hdr_add.fmt);
9442
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9443 error = NULL;
9444 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9445 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9446 args[cur_arg + 1], error);
9447 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9448 goto out_err;
9449 }
9450
9451 proxy->conf.args.ctx = ARGC_HRQ;
9452 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9453 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9454 file, linenum);
9455
9456 free(proxy->conf.lfs_file);
9457 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9458 proxy->conf.lfs_line = proxy->conf.args.line;
9459 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9460 } else if (strcmp(args[0], "del-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9461 rule->action = ACT_HTTP_DEL_HDR;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9462 cur_arg = 1;
9463
9464 if (!*args[cur_arg] ||
9465 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9466 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9467 file, linenum, args[0]);
9468 goto out_err;
9469 }
9470
9471 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9472 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9473
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9474 proxy->conf.args.ctx = ARGC_HRS;
9475 free(proxy->conf.lfs_file);
9476 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9477 proxy->conf.lfs_line = proxy->conf.args.line;
9478 cur_arg += 1;
9479 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9480 /* http-request add-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9481 rule->action = ACT_HTTP_ADD_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9482 /*
9483 * '+ 8' for 'add-acl('
9484 * '- 9' for 'add-acl(' + trailing ')'
9485 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9486 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9487
9488 cur_arg = 1;
9489
9490 if (!*args[cur_arg] ||
9491 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9492 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9493 file, linenum, args[0]);
9494 goto out_err;
9495 }
9496
9497 LIST_INIT(&rule->arg.map.key);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9498 proxy->conf.args.ctx = ARGC_HRS;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9499 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9500 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9501 file, linenum);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9502 free(proxy->conf.lfs_file);
9503 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9504 proxy->conf.lfs_line = proxy->conf.args.line;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9505
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9506 cur_arg += 1;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9507 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9508 /* http-response del-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9509 rule->action = ACT_HTTP_DEL_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9510 /*
9511 * '+ 8' for 'del-acl('
9512 * '- 9' for 'del-acl(' + trailing ')'
9513 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9514 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9515
9516 cur_arg = 1;
9517
9518 if (!*args[cur_arg] ||
9519 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9520 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9521 file, linenum, args[0]);
9522 goto out_err;
9523 }
9524
9525 LIST_INIT(&rule->arg.map.key);
9526 proxy->conf.args.ctx = ARGC_HRS;
9527 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9528 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9529 file, linenum);
9530 free(proxy->conf.lfs_file);
9531 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9532 proxy->conf.lfs_line = proxy->conf.args.line;
9533 cur_arg += 1;
9534 } else if (strncmp(args[0], "del-map", 7) == 0) {
9535 /* http-response del-map(<reference (map name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9536 rule->action = ACT_HTTP_DEL_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9537 /*
9538 * '+ 8' for 'del-map('
9539 * '- 9' for 'del-map(' + trailing ')'
9540 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9541 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9542
9543 cur_arg = 1;
9544
9545 if (!*args[cur_arg] ||
9546 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9547 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9548 file, linenum, args[0]);
9549 goto out_err;
9550 }
9551
9552 LIST_INIT(&rule->arg.map.key);
9553 proxy->conf.args.ctx = ARGC_HRS;
9554 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9555 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9556 file, linenum);
9557 free(proxy->conf.lfs_file);
9558 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9559 proxy->conf.lfs_line = proxy->conf.args.line;
9560 cur_arg += 1;
9561 } else if (strncmp(args[0], "set-map", 7) == 0) {
9562 /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9563 rule->action = ACT_HTTP_SET_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9564 /*
9565 * '+ 8' for 'set-map('
9566 * '- 9' for 'set-map(' + trailing ')'
9567 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9568 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9569
9570 cur_arg = 1;
9571
9572 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9573 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9574 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9575 file, linenum, args[0]);
9576 goto out_err;
9577 }
9578
9579 LIST_INIT(&rule->arg.map.key);
9580 LIST_INIT(&rule->arg.map.value);
9581
9582 proxy->conf.args.ctx = ARGC_HRS;
9583
9584 /* key pattern */
9585 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9586 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9587 file, linenum);
9588
9589 /* value pattern */
9590 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9591 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9592 file, linenum);
9593
9594 free(proxy->conf.lfs_file);
9595 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9596 proxy->conf.lfs_line = proxy->conf.args.line;
9597
9598 cur_arg += 2;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]9599 } else if (strcmp(args[0], "redirect") == 0) {
9600 struct redirect_rule *redir;
9601 char *errmsg = NULL;
9602
9603 if ((redir = http_parse_redirect_rule(file, linenum, proxy, (const char **)args + 1, &errmsg, 1, 1)) == NULL) {
9604 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9605 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9606 goto out_err;
9607 }
9608
9609 /* this redirect rule might already contain a parsed condition which
9610 * we'll pass to the http-request rule.
9611 */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9612 rule->action = ACT_HTTP_REDIR;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]9613 rule->arg.redir = redir;
9614 rule->cond = redir->cond;
9615 redir->cond = NULL;
9616 cur_arg = 2;
9617 return rule;
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]9618 } else if (strncmp(args[0], "track-sc", 8) == 0 &&
9619 args[0][9] == '\0' && args[0][8] >= '0' &&
9620 args[0][8] < '0' + MAX_SESS_STKCTR) { /* track-sc 0..9 */
9621 struct sample_expr *expr;
9622 unsigned int where;
9623 char *err = NULL;
9624
9625 cur_arg = 1;
9626 proxy->conf.args.ctx = ARGC_TRK;
9627
9628 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9629 if (!expr) {
9630 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9631 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9632 free(err);
9633 goto out_err;
9634 }
9635
9636 where = 0;
9637 if (proxy->cap & PR_CAP_FE)
9638 where |= SMP_VAL_FE_HRS_HDR;
9639 if (proxy->cap & PR_CAP_BE)
9640 where |= SMP_VAL_BE_HRS_HDR;
9641
9642 if (!(expr->fetch->val & where)) {
9643 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule :"
9644 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9645 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9646 args[cur_arg-1], sample_src_names(expr->fetch->use));
9647 free(expr);
9648 goto out_err;
9649 }
9650
9651 if (strcmp(args[cur_arg], "table") == 0) {
9652 cur_arg++;
9653 if (!args[cur_arg]) {
9654 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : missing table name.\n",
9655 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9656 free(expr);
9657 goto out_err;
9658 }
9659 /* we copy the table name for now, it will be resolved later */
9660 rule->arg.trk_ctr.table.n = strdup(args[cur_arg]);
9661 cur_arg++;
9662 }
9663 rule->arg.trk_ctr.expr = expr;
9664 rule->action = ACT_ACTION_TRK_SC0 + args[0][8] - '0';
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9665 } else if (((custom = action_http_res_custom(args[0])) != NULL)) {
9666 char *errmsg = NULL;
9667 cur_arg = 1;
9668 /* try in the module list */
Thierry FOURNIER5563e4b2015-08-14 19:20:07 +0200[diff] [blame]9669 rule->from = ACT_F_HTTP_RES;
Thierry FOURNIER85c6c972015-09-22 19:14:35 +0200[diff] [blame]9670 rule->kw = custom;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]9671 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) == ACT_RET_PRS_ERR) {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9672 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9673 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9674 free(errmsg);
9675 goto out_err;
9676 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9677 } else {
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9678 action_build_list(&http_res_keywords.list, &trash);
9679 Alert("parsing [%s:%d]: 'http-response' expects 'allow', 'deny', 'redirect', "
9680 "'add-header', 'del-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', "
Ruoshan Huange4edc6b2016-07-14 15:07:45 +0800[diff] [blame]9681 "'set-tos', 'set-mark', 'set-log-level', 'add-acl', 'del-acl', 'del-map', 'set-map', 'track-sc*'"
William Lallemand2e785f22016-05-25 01:48:42 +0200[diff] [blame]9682 "%s%s, but got '%s'%s.\n",
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9683 file, linenum, *trash.str ? ", " : "", trash.str, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9684 goto out_err;
9685 }
9686
9687 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9688 struct acl_cond *cond;
9689 char *errmsg = NULL;
9690
9691 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9692 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
9693 file, linenum, args[0], errmsg);
9694 free(errmsg);
9695 goto out_err;
9696 }
9697 rule->cond = cond;
9698 }
9699 else if (*args[cur_arg]) {
9700 Alert("parsing [%s:%d]: 'http-response %s' expects"
9701 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9702 file, linenum, args[0], args[cur_arg]);
9703 goto out_err;
9704 }
9705
9706 return rule;
9707 out_err:
9708 free(rule);
9709 return NULL;
9710}
9711
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9712/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9713 * 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]9714 * dynamic log-format rule instead of a static string. Parameter <dir> indicates
9715 * the direction of the rule, and equals 0 for request, non-zero for responses.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9716 */
9717struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9718 const char **args, char **errmsg, int use_fmt, int dir)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9719{
9720 struct redirect_rule *rule;
9721 int cur_arg;
9722 int type = REDIRECT_TYPE_NONE;
9723 int code = 302;
9724 const char *destination = NULL;
9725 const char *cookie = NULL;
9726 int cookie_set = 0;
9727 unsigned int flags = REDIRECT_FLAG_NONE;
9728 struct acl_cond *cond = NULL;
9729
9730 cur_arg = 0;
9731 while (*(args[cur_arg])) {
9732 if (strcmp(args[cur_arg], "location") == 0) {
9733 if (!*args[cur_arg + 1])
9734 goto missing_arg;
9735
9736 type = REDIRECT_TYPE_LOCATION;
9737 cur_arg++;
9738 destination = args[cur_arg];
9739 }
9740 else if (strcmp(args[cur_arg], "prefix") == 0) {
9741 if (!*args[cur_arg + 1])
9742 goto missing_arg;
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9743 type = REDIRECT_TYPE_PREFIX;
9744 cur_arg++;
9745 destination = args[cur_arg];
9746 }
9747 else if (strcmp(args[cur_arg], "scheme") == 0) {
9748 if (!*args[cur_arg + 1])
9749 goto missing_arg;
9750
9751 type = REDIRECT_TYPE_SCHEME;
9752 cur_arg++;
9753 destination = args[cur_arg];
9754 }
9755 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
9756 if (!*args[cur_arg + 1])
9757 goto missing_arg;
9758
9759 cur_arg++;
9760 cookie = args[cur_arg];
9761 cookie_set = 1;
9762 }
9763 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
9764 if (!*args[cur_arg + 1])
9765 goto missing_arg;
9766
9767 cur_arg++;
9768 cookie = args[cur_arg];
9769 cookie_set = 0;
9770 }
9771 else if (strcmp(args[cur_arg], "code") == 0) {
9772 if (!*args[cur_arg + 1])
9773 goto missing_arg;
9774
9775 cur_arg++;
9776 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9777 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9778 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9779 "'%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]9780 args[cur_arg - 1], args[cur_arg]);
9781 return NULL;
9782 }
9783 }
9784 else if (!strcmp(args[cur_arg],"drop-query")) {
9785 flags |= REDIRECT_FLAG_DROP_QS;
9786 }
9787 else if (!strcmp(args[cur_arg],"append-slash")) {
9788 flags |= REDIRECT_FLAG_APPEND_SLASH;
9789 }
9790 else if (strcmp(args[cur_arg], "if") == 0 ||
9791 strcmp(args[cur_arg], "unless") == 0) {
9792 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
9793 if (!cond) {
9794 memprintf(errmsg, "error in condition: %s", *errmsg);
9795 return NULL;
9796 }
9797 break;
9798 }
9799 else {
9800 memprintf(errmsg,
9801 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
9802 args[cur_arg]);
9803 return NULL;
9804 }
9805 cur_arg++;
9806 }
9807
9808 if (type == REDIRECT_TYPE_NONE) {
9809 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
9810 return NULL;
9811 }
9812
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9813 if (dir && type != REDIRECT_TYPE_LOCATION) {
9814 memprintf(errmsg, "response only supports redirect type 'location'");
9815 return NULL;
9816 }
9817
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]9818 rule = calloc(1, sizeof(*rule));
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9819 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]9820 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9821
9822 if (!use_fmt) {
9823 /* old-style static redirect rule */
9824 rule->rdr_str = strdup(destination);
9825 rule->rdr_len = strlen(destination);
9826 }
9827 else {
9828 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9829
9830 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
9831 * if prefix == "/", we don't want to add anything, otherwise it
9832 * makes it hard for the user to configure a self-redirection.
9833 */
Godbachd9722032014-12-18 15:44:58 +0800[diff] [blame]9834 curproxy->conf.args.ctx = ARGC_RDR;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9835 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9836 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9837 dir ? (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRS_HDR : SMP_VAL_BE_HRS_HDR
9838 : (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]9839 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9840 free(curproxy->conf.lfs_file);
9841 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
9842 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9843 }
9844 }
9845
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9846 if (cookie) {
9847 /* depending on cookie_set, either we want to set the cookie, or to clear it.
9848 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
9849 */
9850 rule->cookie_len = strlen(cookie);
9851 if (cookie_set) {
9852 rule->cookie_str = malloc(rule->cookie_len + 10);
9853 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9854 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
9855 rule->cookie_len += 9;
9856 } else {
9857 rule->cookie_str = malloc(rule->cookie_len + 21);
9858 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9859 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
9860 rule->cookie_len += 20;
9861 }
9862 }
9863 rule->type = type;
9864 rule->code = code;
9865 rule->flags = flags;
9866 LIST_INIT(&rule->list);
9867 return rule;
9868
9869 missing_arg:
9870 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
9871 return NULL;
9872}
9873
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9874/************************************************************************/
9875/* The code below is dedicated to ACL parsing and matching */
9876/************************************************************************/
9877
9878
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9879/* This function ensures that the prerequisites for an L7 fetch are ready,
9880 * which means that a request or response is ready. If some data is missing,
9881 * 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]9882 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
9883 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9884 *
9885 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9886 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
9887 * decide whether or not an HTTP message is present ;
9888 * 0 if the requested data cannot be fetched or if it is certain that
9889 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9890 * 1 if an HTTP message is ready
9891 */
James Rosewell91a41cb2015-09-18 17:11:16 +0100[diff] [blame]9892int smp_prefetch_http(struct proxy *px, struct stream *s, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9893 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9894{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9895 struct http_txn *txn;
9896 struct http_msg *msg;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9897
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]9898 /* Note: it is possible that <s> is NULL when called before stream
9899 * initialization (eg: tcp-request connection), so this function is the
9900 * one responsible for guarding against this case for all HTTP users.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9901 */
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9902 if (!s)
9903 return 0;
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]9904
Thierry FOURNIERed08d6a2015-09-24 08:40:18 +0200[diff] [blame]9905 if (!s->txn) {
9906 if (unlikely(!http_alloc_txn(s)))
9907 return 0; /* not enough memory */
9908 http_init_txn(s);
9909 }
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9910 txn = s->txn;
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9911 msg = &txn->req;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9912
9913 /* Check for a dependency on a request */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9914 smp->data.type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9915
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9916 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9917 /* If the buffer does not leave enough free space at the end,
9918 * we must first realign it.
9919 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9920 if (s->req.buf->p > s->req.buf->data &&
9921 s->req.buf->i + s->req.buf->p > s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)
9922 buffer_slow_realign(s->req.buf);
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9923
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9924 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]9925 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9926 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9927
9928 /* Try to decode HTTP request */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9929 if (likely(msg->next < s->req.buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9930 http_msg_analyzer(msg, &txn->hdr_idx);
9931
9932 /* Still no valid request ? */
9933 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]9934 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9935 buffer_full(s->req.buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9936 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9937 }
9938 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9939 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9940 return 0;
9941 }
9942
9943 /* OK we just got a valid HTTP request. We have some minor
9944 * preparation to perform so that further checks can rely
9945 * on HTTP tests.
9946 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9947
9948 /* If the request was parsed but was too large, we must absolutely
9949 * return an error so that it is not processed. At the moment this
9950 * cannot happen, but if the parsers are to change in the future,
9951 * we want this check to be maintained.
9952 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9953 if (unlikely(s->req.buf->i + s->req.buf->p >
9954 s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9955 msg->msg_state = HTTP_MSG_ERROR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9956 smp->data.u.sint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9957 return 1;
9958 }
9959
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9960 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9961 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]9962 s->flags |= SF_REDIRECTABLE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9963
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9964 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
9965 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9966 }
9967
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9968 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9969 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9970 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9971
9972 /* otherwise everything's ready for the request */
9973 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9974 else {
9975 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9976 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
9977 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9978 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9979 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9980 }
9981
9982 /* everything's OK */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9983 smp->data.u.sint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9984 return 1;
9985}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9986
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9987/* 1. Check on METHOD
9988 * We use the pre-parsed method if it is known, and store its number as an
9989 * integer. If it is unknown, we use the pointer and the length.
9990 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]9991static int pat_parse_meth(const char *text, struct pattern *pattern, int mflags, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9992{
9993 int len, meth;
9994
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]9995 len = strlen(text);
9996 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9997
9998 pattern->val.i = meth;
9999 if (meth == HTTP_METH_OTHER) {
Willy Tarreau912c1192014-08-29 15:15:50 +0200[diff] [blame]10000 pattern->ptr.str = (char *)text;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10001 pattern->len = len;
10002 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10003 else {
10004 pattern->ptr.str = NULL;
10005 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10006 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10007 return 1;
10008}
10009
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10010/* This function fetches the method of current HTTP request and stores
10011 * it in the global pattern struct as a chunk. There are two possibilities :
10012 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
10013 * in <len> and <ptr> is NULL ;
10014 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
10015 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10016 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10017 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10018static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10019smp_fetch_meth(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10020{
10021 int meth;
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10022 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10023
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10024 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10025
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10026 txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10027 meth = txn->meth;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10028 smp->data.type = SMP_T_METH;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10029 smp->data.u.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10030 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10031 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
10032 /* ensure the indexes are not affected */
10033 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10034 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10035 smp->data.u.meth.str.len = txn->req.sl.rq.m_l;
10036 smp->data.u.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10037 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10038 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10039 return 1;
10040}
10041
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10042/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10043static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10044{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10045 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10046 struct pattern_list *lst;
10047 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10048
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10049 list_for_each_entry(lst, &expr->patterns, list) {
10050 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10051
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10052 /* well-known method */
10053 if (pattern->val.i != HTTP_METH_OTHER) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10054 if (smp->data.u.meth.meth == pattern->val.i)
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10055 return pattern;
10056 else
10057 continue;
10058 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10059
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10060 /* Other method, we must compare the strings */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10061 if (pattern->len != smp->data.u.meth.str.len)
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10062 continue;
10063
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]10064 icase = expr->mflags & PAT_MF_IGNORE_CASE;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10065 if ((icase && strncasecmp(pattern->ptr.str, smp->data.u.meth.str.str, smp->data.u.meth.str.len) == 0) ||
10066 (!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]10067 return pattern;
10068 }
10069 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10070}
10071
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10072static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10073smp_fetch_rqver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10074{
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10075 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10076 char *ptr;
10077 int len;
10078
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10079 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10080
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10081 txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10082 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10083 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10084
10085 while ((len-- > 0) && (*ptr++ != '/'));
10086 if (len <= 0)
10087 return 0;
10088
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10089 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10090 smp->data.u.str.str = ptr;
10091 smp->data.u.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10092
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10093 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10094 return 1;
10095}
10096
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10097static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10098smp_fetch_stver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10099{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10100 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10101 char *ptr;
10102 int len;
10103
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10104 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10105
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10106 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10107 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10108 return 0;
10109
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10110 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10111 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10112
10113 while ((len-- > 0) && (*ptr++ != '/'));
10114 if (len <= 0)
10115 return 0;
10116
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10117 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10118 smp->data.u.str.str = ptr;
10119 smp->data.u.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10120
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10121 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10122 return 1;
10123}
10124
10125/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10126static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10127smp_fetch_stcode(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10128{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10129 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10130 char *ptr;
10131 int len;
10132
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10133 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10134
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10135 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10136 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10137 return 0;
10138
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10139 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10140 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10141
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10142 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10143 smp->data.u.sint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10144 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10145 return 1;
10146}
10147
Thierry Fournierf4011dd2016-03-29 17:23:51 +0200[diff] [blame]10148static int
10149smp_fetch_uniqueid(const struct arg *args, struct sample *smp, const char *kw, void *private)
10150{
10151 if (LIST_ISEMPTY(&smp->sess->fe->format_unique_id))
10152 return 0;
10153
10154 if (!smp->strm->unique_id) {
10155 if ((smp->strm->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
10156 return 0;
10157 smp->strm->unique_id[0] = '\0';
10158 }
10159 smp->data.u.str.len = build_logline(smp->strm, smp->strm->unique_id,
10160 UNIQUEID_LEN, &smp->sess->fe->format_unique_id);
10161
10162 smp->data.type = SMP_T_STR;
10163 smp->data.u.str.str = smp->strm->unique_id;
10164 smp->flags = SMP_F_CONST;
10165 return 1;
10166}
10167
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10168/* returns the longest available part of the body. This requires that the body
10169 * has been waited for using http-buffer-request.
10170 */
10171static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10172smp_fetch_body(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10173{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10174 struct http_msg *msg;
10175 unsigned long len;
10176 unsigned long block1;
10177 char *body;
10178 struct chunk *temp;
10179
10180 CHECK_HTTP_MESSAGE_FIRST();
10181
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10182 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10183 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10184 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10185 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10186
10187 len = http_body_bytes(msg);
10188 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
10189
10190 block1 = len;
10191 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
10192 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
10193
10194 if (block1 == len) {
10195 /* buffer is not wrapped (or empty) */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10196 smp->data.type = SMP_T_BIN;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10197 smp->data.u.str.str = body;
10198 smp->data.u.str.len = len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10199 smp->flags = SMP_F_VOL_TEST | SMP_F_CONST;
10200 }
10201 else {
10202 /* buffer is wrapped, we need to defragment it */
10203 temp = get_trash_chunk();
10204 memcpy(temp->str, body, block1);
10205 memcpy(temp->str + block1, msg->chn->buf->data, len - block1);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10206 smp->data.type = SMP_T_BIN;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10207 smp->data.u.str.str = temp->str;
10208 smp->data.u.str.len = len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10209 smp->flags = SMP_F_VOL_TEST;
10210 }
10211 return 1;
10212}
10213
10214
10215/* returns the available length of the body. This requires that the body
10216 * has been waited for using http-buffer-request.
10217 */
10218static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10219smp_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]10220{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10221 struct http_msg *msg;
10222
10223 CHECK_HTTP_MESSAGE_FIRST();
10224
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10225 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10226 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10227 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10228 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10229
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10230 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10231 smp->data.u.sint = http_body_bytes(msg);
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10232
10233 smp->flags = SMP_F_VOL_TEST;
10234 return 1;
10235}
10236
10237
10238/* returns the advertised length of the body, or the advertised size of the
10239 * chunks available in the buffer. This requires that the body has been waited
10240 * for using http-buffer-request.
10241 */
10242static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10243smp_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]10244{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10245 struct http_msg *msg;
10246
10247 CHECK_HTTP_MESSAGE_FIRST();
10248
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10249 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10250 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10251 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10252 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10253
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10254 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10255 smp->data.u.sint = msg->body_len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10256
10257 smp->flags = SMP_F_VOL_TEST;
10258 return 1;
10259}
10260
10261
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10262/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10263static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10264smp_fetch_url(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10265{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10266 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10267
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10268 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10269
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10270 txn = smp->strm->txn;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10271 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10272 smp->data.u.str.len = txn->req.sl.rq.u_l;
10273 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]10274 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10275 return 1;
10276}
10277
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10278static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10279smp_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]10280{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10281 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10282 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10283
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10284 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10285
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10286 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10287 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]10288 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]10289 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10290
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10291 smp->data.type = SMP_T_IPV4;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10292 smp->data.u.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10293 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10294 return 1;
10295}
10296
10297static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10298smp_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]10299{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10300 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10301 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10302
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10303 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10304
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10305 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10306 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]10307 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
10308 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10309
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10310 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10311 smp->data.u.sint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]10312 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10313 return 1;
10314}
10315
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10316/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10317 * Accepts an optional argument of type string containing the header field name,
10318 * and an optional argument of type signed or unsigned integer to request an
10319 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10320 * headers are considered from the first one. It does not stop on commas and
10321 * returns full lines instead (useful for User-Agent or Date for example).
10322 */
10323static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10324smp_fetch_fhdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10325{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10326 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10327 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10328 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10329 int occ = 0;
10330 const char *name_str = NULL;
10331 int name_len = 0;
10332
10333 if (!ctx) {
10334 /* first call */
10335 ctx = &static_hdr_ctx;
10336 ctx->idx = 0;
10337 smp->ctx.a[0] = ctx;
10338 }
10339
10340 if (args) {
10341 if (args[0].type != ARGT_STR)
10342 return 0;
10343 name_str = args[0].data.str.str;
10344 name_len = args[0].data.str.len;
10345
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10346 if (args[1].type == ARGT_SINT)
10347 occ = args[1].data.sint;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10348 }
10349
10350 CHECK_HTTP_MESSAGE_FIRST();
10351
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10352 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10353 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]10354
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10355 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
10356 /* search for header from the beginning */
10357 ctx->idx = 0;
10358
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10359 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10360 /* no explicit occurrence and single fetch => last header by default */
10361 occ = -1;
10362
10363 if (!occ)
10364 /* prepare to report multiple occurrences for ACL fetches */
10365 smp->flags |= SMP_F_NOT_LAST;
10366
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10367 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10368 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10369 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]10370 return 1;
10371
10372 smp->flags &= ~SMP_F_NOT_LAST;
10373 return 0;
10374}
10375
10376/* 6. Check on HTTP header count. The number of occurrences is returned.
10377 * Accepts exactly 1 argument of type string. It does not stop on commas and
10378 * returns full lines instead (useful for User-Agent or Date for example).
10379 */
10380static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10381smp_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]10382{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10383 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10384 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10385 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10386 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10387 const char *name = NULL;
10388 int len = 0;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10389
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10390 if (args && args->type == ARGT_STR) {
10391 name = args->data.str.str;
10392 len = args->data.str.len;
10393 }
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10394
10395 CHECK_HTTP_MESSAGE_FIRST();
10396
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10397 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10398 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]10399
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10400 ctx.idx = 0;
10401 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10402 while (http_find_full_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10403 cnt++;
10404
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10405 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10406 smp->data.u.sint = cnt;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10407 smp->flags = SMP_F_VOL_HDR;
10408 return 1;
10409}
10410
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10411static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10412smp_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]10413{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10414 struct hdr_idx *idx;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10415 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10416 const struct http_msg *msg;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10417 struct chunk *temp;
10418 char del = ',';
10419
10420 if (args && args->type == ARGT_STR)
10421 del = *args[0].data.str.str;
10422
10423 CHECK_HTTP_MESSAGE_FIRST();
10424
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10425 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10426 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]10427
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10428 temp = get_trash_chunk();
10429
10430 ctx.idx = 0;
10431 while (http_find_next_header(msg->chn->buf->p, idx, &ctx)) {
10432 if (temp->len)
10433 temp->str[temp->len++] = del;
10434 memcpy(temp->str + temp->len, ctx.line, ctx.del);
10435 temp->len += ctx.del;
10436 }
10437
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10438 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10439 smp->data.u.str.str = temp->str;
10440 smp->data.u.str.len = temp->len;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10441 smp->flags = SMP_F_VOL_HDR;
10442 return 1;
10443}
10444
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10445/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10446 * Accepts an optional argument of type string containing the header field name,
10447 * and an optional argument of type signed or unsigned integer to request an
10448 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10449 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10450 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10451static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10452smp_fetch_hdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10453{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10454 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10455 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10456 const struct http_msg *msg;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10457 int occ = 0;
10458 const char *name_str = NULL;
10459 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10460
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10461 if (!ctx) {
10462 /* first call */
10463 ctx = &static_hdr_ctx;
10464 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]10465 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10466 }
10467
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10468 if (args) {
10469 if (args[0].type != ARGT_STR)
10470 return 0;
10471 name_str = args[0].data.str.str;
10472 name_len = args[0].data.str.len;
10473
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10474 if (args[1].type == ARGT_SINT)
10475 occ = args[1].data.sint;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10476 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10477
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10478 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10479
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10480 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10481 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]10482
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10483 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10484 /* search for header from the beginning */
10485 ctx->idx = 0;
10486
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10487 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10488 /* no explicit occurrence and single fetch => last header by default */
10489 occ = -1;
10490
10491 if (!occ)
10492 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10493 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]10494
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10495 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10496 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10497 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]10498 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10499
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10500 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10501 return 0;
10502}
10503
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10504/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10505 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10506 */
10507static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10508smp_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]10509{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10510 struct hdr_idx *idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10511 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10512 const struct http_msg *msg;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10513 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10514 const char *name = NULL;
10515 int len = 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10516
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10517 if (args && args->type == ARGT_STR) {
10518 name = args->data.str.str;
10519 len = args->data.str.len;
10520 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10521
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10522 CHECK_HTTP_MESSAGE_FIRST();
10523
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10524 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10525 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]10526
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10527 ctx.idx = 0;
10528 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10529 while (http_find_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10530 cnt++;
10531
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10532 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10533 smp->data.u.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10534 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10535 return 1;
10536}
10537
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10538/* Fetch an HTTP header's integer value. The integer value is returned. It
10539 * takes a mandatory argument of type string and an optional one of type int
10540 * to designate a specific occurrence. It returns an unsigned integer, which
10541 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10542 */
10543static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10544smp_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]10545{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10546 int ret = smp_fetch_hdr(args, smp, kw, private);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10547
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10548 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10549 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10550 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]10551 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10552
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10553 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10554}
10555
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10556/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
10557 * and an optional one of type int to designate a specific occurrence.
10558 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10559 */
10560static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10561smp_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]10562{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10563 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10564
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10565 while ((ret = smp_fetch_hdr(args, smp, kw, private)) > 0) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10566 if (url2ipv4((char *)smp->data.u.str.str, &smp->data.u.ipv4)) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10567 smp->data.type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10568 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10569 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10570 struct chunk *temp = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10571 if (smp->data.u.str.len < temp->size - 1) {
10572 memcpy(temp->str, smp->data.u.str.str, smp->data.u.str.len);
10573 temp->str[smp->data.u.str.len] = '\0';
10574 if (inet_pton(AF_INET6, temp->str, &smp->data.u.ipv6)) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10575 smp->data.type = SMP_T_IPV6;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10576 break;
10577 }
10578 }
10579 }
10580
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10581 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10582 if (!(smp->flags & SMP_F_NOT_LAST))
10583 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10584 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10585 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10586}
10587
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10588/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
10589 * the first '/' after the possible hostname, and ends before the possible '?'.
10590 */
10591static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10592smp_fetch_path(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10593{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10594 struct http_txn *txn;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10595 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10596
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10597 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10598
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10599 txn = smp->strm->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10600 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]10601 ptr = http_get_path(txn);
10602 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10603 return 0;
10604
10605 /* OK, we got the '/' ! */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10606 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10607 smp->data.u.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10608
10609 while (ptr < end && *ptr != '?')
10610 ptr++;
10611
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10612 smp->data.u.str.len = ptr - smp->data.u.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10613 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10614 return 1;
10615}
10616
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10617/* This produces a concatenation of the first occurrence of the Host header
10618 * followed by the path component if it begins with a slash ('/'). This means
10619 * that '*' will not be added, resulting in exactly the first Host entry.
10620 * If no Host header is found, then the path is returned as-is. The returned
10621 * 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]10622 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10623 */
10624static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10625smp_fetch_base(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10626{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10627 struct http_txn *txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10628 char *ptr, *end, *beg;
10629 struct hdr_ctx ctx;
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10630 struct chunk *temp;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10631
10632 CHECK_HTTP_MESSAGE_FIRST();
10633
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10634 txn = smp->strm->txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10635 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10636 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]10637 return smp_fetch_path(args, smp, kw, private);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10638
10639 /* 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]10640 temp = get_trash_chunk();
10641 memcpy(temp->str, ctx.line + ctx.val, ctx.vlen);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10642 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10643 smp->data.u.str.str = temp->str;
10644 smp->data.u.str.len = ctx.vlen;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10645
10646 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10647 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]10648 beg = http_get_path(txn);
10649 if (!beg)
10650 beg = end;
10651
10652 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10653
10654 if (beg < ptr && *beg == '/') {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10655 memcpy(smp->data.u.str.str + smp->data.u.str.len, beg, ptr - beg);
10656 smp->data.u.str.len += ptr - beg;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10657 }
10658
10659 smp->flags = SMP_F_VOL_1ST;
10660 return 1;
10661}
10662
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10663/* This produces a 32-bit hash of the concatenation of the first occurrence of
10664 * the Host header followed by the path component if it begins with a slash ('/').
10665 * This means that '*' will not be added, resulting in exactly the first Host
10666 * 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]10667 * is hashed using the path hash followed by a full avalanche hash and provides a
10668 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10669 * high-traffic sites without having to store whole paths.
10670 */
Thierry FOURNIER055b9d52014-07-15 16:11:07 +0200[diff] [blame]10671int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10672smp_fetch_base32(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10673{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10674 struct http_txn *txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10675 struct hdr_ctx ctx;
10676 unsigned int hash = 0;
10677 char *ptr, *beg, *end;
10678 int len;
10679
10680 CHECK_HTTP_MESSAGE_FIRST();
10681
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10682 txn = smp->strm->txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10683 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10684 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]10685 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10686 ptr = ctx.line + ctx.val;
10687 len = ctx.vlen;
10688 while (len--)
10689 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10690 }
10691
10692 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10693 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]10694 beg = http_get_path(txn);
10695 if (!beg)
10696 beg = end;
10697
10698 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10699
10700 if (beg < ptr && *beg == '/') {
10701 while (beg < ptr)
10702 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10703 }
10704 hash = full_hash(hash);
10705
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10706 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10707 smp->data.u.sint = hash;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10708 smp->flags = SMP_F_VOL_1ST;
10709 return 1;
10710}
10711
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10712/* 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]10713 * path as returned by smp_fetch_base32(). The idea is to have per-source and
10714 * per-path counters. The result is a binary block from 8 to 20 bytes depending
10715 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10716 * that in environments where IPv6 is insignificant, truncating the output to
10717 * 8 bytes would still work.
10718 */
10719static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10720smp_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]10721{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10722 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10723 struct connection *cli_conn = objt_conn(smp->sess->origin);
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10724
10725 if (!cli_conn)
10726 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10727
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10728 if (!smp_fetch_base32(args, smp, kw, private))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10729 return 0;
10730
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10731 temp = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10732 *(unsigned int *)temp->str = htonl(smp->data.u.sint);
Willy Tarreau5ad6e1d2014-07-15 21:34:06 +0200[diff] [blame]10733 temp->len += sizeof(unsigned int);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10734
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10735 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10736 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10737 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]10738 temp->len += 4;
10739 break;
10740 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10741 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]10742 temp->len += 16;
10743 break;
10744 default:
10745 return 0;
10746 }
10747
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10748 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10749 smp->data.type = SMP_T_BIN;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10750 return 1;
10751}
10752
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10753/* Extracts the query string, which comes after the question mark '?'. If no
10754 * question mark is found, nothing is returned. Otherwise it returns a sample
10755 * of type string carrying the whole query string.
10756 */
10757static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10758smp_fetch_query(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10759{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10760 struct http_txn *txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10761 char *ptr, *end;
10762
10763 CHECK_HTTP_MESSAGE_FIRST();
10764
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10765 txn = smp->strm->txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10766 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
10767 end = ptr + txn->req.sl.rq.u_l;
10768
10769 /* look up the '?' */
10770 do {
10771 if (ptr == end)
10772 return 0;
10773 } while (*ptr++ != '?');
10774
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10775 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10776 smp->data.u.str.str = ptr;
10777 smp->data.u.str.len = end - ptr;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10778 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
10779 return 1;
10780}
10781
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10782static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10783smp_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]10784{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10785 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
10786 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
10787 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10788
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10789 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10790
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10791 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10792 smp->data.u.sint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10793 return 1;
10794}
10795
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10796/* return a valid test if the current request is the first one on the connection */
10797static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10798smp_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]10799{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10800 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10801 smp->data.u.sint = !(smp->strm->txn->flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10802 return 1;
10803}
10804
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10805/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10806static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10807smp_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]10808{
10809
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10810 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10811 return 0;
10812
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10813 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10814
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10815 if (!get_http_auth(smp->strm))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10816 return 0;
10817
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10818 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10819 smp->data.u.sint = check_user(args->data.usr, smp->strm->txn->auth.user,
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10820 smp->strm->txn->auth.pass);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10821 return 1;
10822}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10823
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10824/* Accepts exactly 1 argument of type userlist */
10825static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10826smp_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]10827{
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10828 if (!args || args->type != ARGT_USR)
10829 return 0;
10830
10831 CHECK_HTTP_MESSAGE_FIRST();
10832
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10833 if (!get_http_auth(smp->strm))
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10834 return 0;
10835
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10836 /* if the user does not belong to the userlist or has a wrong password,
10837 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10838 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10839 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10840 if (!check_user(args->data.usr, smp->strm->txn->auth.user,
10841 smp->strm->txn->auth.pass))
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10842 return 0;
10843
10844 /* pat_match_auth() will need the user list */
10845 smp->ctx.a[0] = args->data.usr;
10846
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10847 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10848 smp->flags = SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10849 smp->data.u.str.str = smp->strm->txn->auth.user;
10850 smp->data.u.str.len = strlen(smp->strm->txn->auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10851
10852 return 1;
10853}
10854
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10855/* Try to find the next occurrence of a cookie name in a cookie header value.
10856 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
10857 * the cookie value is returned into *value and *value_l, and the function
10858 * returns a pointer to the next pointer to search from if the value was found.
10859 * Otherwise if the cookie was not found, NULL is returned and neither value
10860 * nor value_l are touched. The input <hdr> string should first point to the
10861 * header's value, and the <hdr_end> pointer must point to the first character
10862 * not part of the value. <list> must be non-zero if value may represent a list
10863 * of values (cookie headers). This makes it faster to abort parsing when no
10864 * list is expected.
10865 */
David Carlier4686f792015-09-25 14:10:50 +0100[diff] [blame]10866char *
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10867extract_cookie_value(char *hdr, const char *hdr_end,
10868 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]10869 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10870{
10871 char *equal, *att_end, *att_beg, *val_beg, *val_end;
10872 char *next;
10873
10874 /* we search at least a cookie name followed by an equal, and more
10875 * generally something like this :
10876 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
10877 */
10878 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
10879 /* Iterate through all cookies on this line */
10880
10881 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
10882 att_beg++;
10883
10884 /* find att_end : this is the first character after the last non
10885 * space before the equal. It may be equal to hdr_end.
10886 */
10887 equal = att_end = att_beg;
10888
10889 while (equal < hdr_end) {
10890 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
10891 break;
10892 if (http_is_spht[(unsigned char)*equal++])
10893 continue;
10894 att_end = equal;
10895 }
10896
10897 /* here, <equal> points to '=', a delimitor or the end. <att_end>
10898 * is between <att_beg> and <equal>, both may be identical.
10899 */
10900
10901 /* look for end of cookie if there is an equal sign */
10902 if (equal < hdr_end && *equal == '=') {
10903 /* look for the beginning of the value */
10904 val_beg = equal + 1;
10905 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
10906 val_beg++;
10907
10908 /* find the end of the value, respecting quotes */
10909 next = find_cookie_value_end(val_beg, hdr_end);
10910
10911 /* make val_end point to the first white space or delimitor after the value */
10912 val_end = next;
10913 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
10914 val_end--;
10915 } else {
10916 val_beg = val_end = next = equal;
10917 }
10918
10919 /* We have nothing to do with attributes beginning with '$'. However,
10920 * they will automatically be removed if a header before them is removed,
10921 * since they're supposed to be linked together.
10922 */
10923 if (*att_beg == '$')
10924 continue;
10925
10926 /* Ignore cookies with no equal sign */
10927 if (equal == next)
10928 continue;
10929
10930 /* Now we have the cookie name between att_beg and att_end, and
10931 * its value between val_beg and val_end.
10932 */
10933
10934 if (att_end - att_beg == cookie_name_l &&
10935 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
10936 /* let's return this value and indicate where to go on from */
10937 *value = val_beg;
10938 *value_l = val_end - val_beg;
10939 return next + 1;
10940 }
10941
10942 /* Set-Cookie headers only have the name in the first attr=value part */
10943 if (!list)
10944 break;
10945 }
10946
10947 return NULL;
10948}
10949
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10950/* Fetch a captured HTTP request header. The index is the position of
10951 * the "capture" option in the configuration file
10952 */
10953static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10954smp_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]10955{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10956 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10957 int idx;
10958
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10959 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10960 return 0;
10961
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10962 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10963
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10964 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]10965 return 0;
10966
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10967 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10968 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10969 smp->data.u.str.str = smp->strm->req_cap[idx];
10970 smp->data.u.str.len = strlen(smp->strm->req_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10971
10972 return 1;
10973}
10974
10975/* Fetch a captured HTTP response header. The index is the position of
10976 * the "capture" option in the configuration file
10977 */
10978static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10979smp_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]10980{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10981 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10982 int idx;
10983
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10984 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10985 return 0;
10986
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10987 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10988
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10989 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]10990 return 0;
10991
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10992 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10993 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10994 smp->data.u.str.str = smp->strm->res_cap[idx];
10995 smp->data.u.str.len = strlen(smp->strm->res_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10996
10997 return 1;
10998}
10999
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11000/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
11001static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11002smp_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]11003{
11004 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11005 struct http_txn *txn = smp->strm->txn;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11006 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11007
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11008 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11009 return 0;
11010
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11011 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11012
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11013 while (*ptr != ' ' && *ptr != '\0') /* find first space */
11014 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11015
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11016 temp = get_trash_chunk();
11017 temp->str = txn->uri;
11018 temp->len = ptr - txn->uri;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11019 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11020 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11021 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11022
11023 return 1;
11024
11025}
11026
11027/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
11028static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11029smp_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]11030{
11031 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11032 struct http_txn *txn = smp->strm->txn;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11033 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11034
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11035 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11036 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11037
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11038 ptr = txn->uri;
11039
11040 while (*ptr != ' ' && *ptr != '\0') /* find first space */
11041 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11042
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11043 if (!*ptr)
11044 return 0;
11045
11046 ptr++; /* skip the space */
11047
11048 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11049 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11050 if (!ptr)
11051 return 0;
11052 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
11053 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11054
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11055 smp->data.u.str = *temp;
11056 smp->data.u.str.len = ptr - temp->str;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11057 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11058 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11059
11060 return 1;
11061}
11062
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11063/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
11064 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11065 */
11066static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11067smp_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]11068{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11069 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11070
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11071 if (!txn || txn->req.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11072 return 0;
11073
11074 if (txn->req.flags & HTTP_MSGF_VER_11)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11075 smp->data.u.str.str = "HTTP/1.1";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11076 else
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11077 smp->data.u.str.str = "HTTP/1.0";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11078
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11079 smp->data.u.str.len = 8;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11080 smp->data.type = SMP_T_STR;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11081 smp->flags = SMP_F_CONST;
11082 return 1;
11083
11084}
11085
11086/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
11087 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11088 */
11089static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11090smp_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]11091{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11092 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11093
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11094 if (!txn || txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11095 return 0;
11096
11097 if (txn->rsp.flags & HTTP_MSGF_VER_11)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11098 smp->data.u.str.str = "HTTP/1.1";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11099 else
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11100 smp->data.u.str.str = "HTTP/1.0";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11101
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11102 smp->data.u.str.len = 8;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11103 smp->data.type = SMP_T_STR;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11104 smp->flags = SMP_F_CONST;
11105 return 1;
11106
11107}
11108
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11109
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11110/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11111 * 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]11112 * 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]11113 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11114 * 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]11115 * Accepts exactly 1 argument of type string. If the input options indicate
11116 * that no iterating is desired, then only last value is fetched if any.
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]11117 * The returned sample is of type CSTR. Can be used to parse cookies in other
11118 * files.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11119 */
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11120int 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]11121{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11122 struct http_txn *txn;
11123 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11124 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11125 const struct http_msg *msg;
11126 const char *hdr_name;
11127 int hdr_name_len;
11128 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11129 int occ = 0;
11130 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11131
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11132 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11133 return 0;
11134
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11135 if (!ctx) {
11136 /* first call */
11137 ctx = &static_hdr_ctx;
11138 ctx->idx = 0;
11139 smp->ctx.a[2] = ctx;
11140 }
11141
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11142 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11143
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11144 txn = smp->strm->txn;
11145 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11146
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11147 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11148 msg = &txn->req;
11149 hdr_name = "Cookie";
11150 hdr_name_len = 6;
11151 } else {
11152 msg = &txn->rsp;
11153 hdr_name = "Set-Cookie";
11154 hdr_name_len = 10;
11155 }
11156
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11157 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11158 /* no explicit occurrence and single fetch => last cookie by default */
11159 occ = -1;
11160
11161 /* OK so basically here, either we want only one value and it's the
11162 * last one, or we want to iterate over all of them and we fetch the
11163 * next one.
11164 */
11165
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11166 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11167 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11168 /* search for the header from the beginning, we must first initialize
11169 * the search parameters.
11170 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11171 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11172 ctx->idx = 0;
11173 }
11174
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11175 smp->flags |= SMP_F_VOL_HDR;
11176
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11177 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11178 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
11179 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11180 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
11181 goto out;
11182
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11183 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11184 continue;
11185
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11186 smp->ctx.a[0] = ctx->line + ctx->val;
11187 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11188 }
11189
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11190 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11191 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11192 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]11193 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11194 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11195 &smp->data.u.str.str,
11196 &smp->data.u.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11197 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11198 found = 1;
11199 if (occ >= 0) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11200 /* one value was returned into smp->data.u.str.{str,len} */
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11201 smp->flags |= SMP_F_NOT_LAST;
11202 return 1;
11203 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11204 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11205 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11206 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11207 /* all cookie headers and values were scanned. If we're looking for the
11208 * last occurrence, we may return it now.
11209 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11210 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11211 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11212 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11213}
11214
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11215/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11216 * 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]11217 * multiple cookies may be parsed on the same line. The returned sample is of
11218 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11219 */
11220static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11221smp_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]11222{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11223 struct http_txn *txn;
11224 struct hdr_idx *idx;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11225 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11226 const struct http_msg *msg;
11227 const char *hdr_name;
11228 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11229 int cnt;
11230 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11231 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11232
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11233 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11234 return 0;
11235
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11236 CHECK_HTTP_MESSAGE_FIRST();
11237
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11238 txn = smp->strm->txn;
11239 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11240
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11241 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11242 msg = &txn->req;
11243 hdr_name = "Cookie";
11244 hdr_name_len = 6;
11245 } else {
11246 msg = &txn->rsp;
11247 hdr_name = "Set-Cookie";
11248 hdr_name_len = 10;
11249 }
11250
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11251 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]11252 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11253 ctx.idx = 0;
11254 cnt = 0;
11255
11256 while (1) {
11257 /* Note: val_beg == NULL every time we need to fetch a new header */
11258 if (!val_beg) {
11259 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
11260 break;
11261
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11262 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11263 continue;
11264
11265 val_beg = ctx.line + ctx.val;
11266 val_end = val_beg + ctx.vlen;
11267 }
11268
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11269 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11270 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11271 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11272 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11273 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11274 &smp->data.u.str.str,
11275 &smp->data.u.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11276 cnt++;
11277 }
11278 }
11279
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11280 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11281 smp->data.u.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11282 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11283 return 1;
11284}
11285
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11286/* Fetch an cookie's integer value. The integer value is returned. It
11287 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
11288 */
11289static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11290smp_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]11291{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11292 int ret = smp_fetch_cookie(args, smp, kw, private);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11293
11294 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11295 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11296 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]11297 }
11298
11299 return ret;
11300}
11301
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11302/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]11303/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11304/************************************************************************/
11305
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11306/*
11307 * Given a path string and its length, find the position of beginning of the
11308 * query string. Returns NULL if no query string is found in the path.
11309 *
11310 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
11311 *
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11312 * find_query_string(path, n, '?') points to "yo=mama;ye=daddy" string.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11313 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11314static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11315{
11316 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]11317
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11318 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11319 return p ? p + 1 : NULL;
11320}
11321
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11322static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11323{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11324 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11325}
11326
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11327/* after increasing a pointer value, it can exceed the first buffer
11328 * size. This function transform the value of <ptr> according with
11329 * the expected position. <chunks> is an array of the one or two
11330 * avalaible chunks. The first value is the start of the first chunk,
11331 * the second value if the end+1 of the first chunks. The third value
11332 * is NULL or the start of the second chunk and the fourth value is
11333 * the end+1 of the second chunk. The function returns 1 if does a
11334 * wrap, else returns 0.
11335 */
11336static inline int fix_pointer_if_wrap(const char **chunks, const char **ptr)
11337{
11338 if (*ptr < chunks[1])
11339 return 0;
11340 if (!chunks[2])
11341 return 0;
11342 *ptr = chunks[2] + ( *ptr - chunks[1] );
11343 return 1;
11344}
11345
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11346/*
11347 * Given a url parameter, find the starting position of the first occurence,
11348 * or NULL if the parameter is not found.
11349 *
11350 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
11351 * the function will return query_string+8.
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11352 *
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11353 * Warning: this function returns a pointer that can point to the first chunk
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11354 * or the second chunk. The caller must be check the position before using the
11355 * result.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11356 */
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11357static const char *
11358find_url_param_pos(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11359 const char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11360 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11361{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11362 const char *pos, *last, *equal;
11363 const char **bufs = chunks;
11364 int l1, l2;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11365
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11366
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11367 pos = bufs[0];
11368 last = bufs[1];
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11369 while (pos < last) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11370 /* Check the equal. */
11371 equal = pos + url_param_name_l;
11372 if (fix_pointer_if_wrap(chunks, &equal)) {
11373 if (equal >= chunks[3])
11374 return NULL;
11375 } else {
11376 if (equal >= chunks[1])
11377 return NULL;
11378 }
11379 if (*equal == '=') {
11380 if (pos + url_param_name_l > last) {
11381 /* process wrap case, we detect a wrap. In this case, the
11382 * comparison is performed in two parts.
11383 */
11384
11385 /* This is the end, we dont have any other chunk. */
11386 if (bufs != chunks || !bufs[2])
11387 return NULL;
11388
11389 /* Compute the length of each part of the comparison. */
11390 l1 = last - pos;
11391 l2 = url_param_name_l - l1;
11392
11393 /* The second buffer is too short to contain the compared string. */
11394 if (bufs[2] + l2 > bufs[3])
11395 return NULL;
11396
11397 if (memcmp(pos, url_param_name, l1) == 0 &&
11398 memcmp(bufs[2], url_param_name+l1, l2) == 0)
11399 return pos;
11400
11401 /* Perform wrapping and jump the string who fail the comparison. */
11402 bufs += 2;
11403 pos = bufs[0] + l2;
11404 last = bufs[1];
11405
11406 } else {
11407 /* process a simple comparison. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11408 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
11409 return pos;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11410 pos += url_param_name_l + 1;
11411 if (fix_pointer_if_wrap(chunks, &pos))
11412 last = bufs[2];
11413 }
11414 }
11415
11416 while (1) {
11417 /* Look for the next delimiter. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11418 while (pos < last && !is_param_delimiter(*pos, delim))
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11419 pos++;
11420 if (pos < last)
11421 break;
11422 /* process buffer wrapping. */
11423 if (bufs != chunks || !bufs[2])
11424 return NULL;
11425 bufs += 2;
11426 pos = bufs[0];
11427 last = bufs[1];
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11428 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11429 pos++;
11430 }
11431 return NULL;
11432}
11433
11434/*
Cyril Bontéce1ef4d2015-11-26 21:39:56 +0100[diff] [blame]11435 * Given a url parameter name and a query string, find the next value.
11436 * An empty url_param_name matches the first available parameter.
11437 * If the parameter is found, 1 is returned and *vstart / *vend are updated to
11438 * respectively provide a pointer to the value and its end.
11439 * Otherwise, 0 is returned and vstart/vend are not modified.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11440 */
11441static int
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11442find_next_url_param(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11443 const char* url_param_name, size_t url_param_name_l,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11444 const char **vstart, const char **vend, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11445{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11446 const char *arg_start, *qs_end;
11447 const char *value_start, *value_end;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11448
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11449 arg_start = chunks[0];
11450 qs_end = chunks[1];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11451 if (url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11452 /* Looks for an argument name. */
11453 arg_start = find_url_param_pos(chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11454 url_param_name, url_param_name_l,
11455 delim);
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11456 /* Check for wrapping. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11457 if (arg_start >= qs_end)
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11458 qs_end = chunks[3];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11459 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11460 if (!arg_start)
11461 return 0;
11462
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11463 if (!url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11464 while (1) {
11465 /* looks for the first argument. */
11466 value_start = memchr(arg_start, '=', qs_end - arg_start);
11467 if (!value_start) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11468 /* Check for wrapping. */
11469 if (arg_start >= chunks[0] &&
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11470 arg_start < chunks[1] &&
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11471 chunks[2]) {
11472 arg_start = chunks[2];
11473 qs_end = chunks[3];
11474 continue;
11475 }
11476 return 0;
11477 }
11478 break;
11479 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11480 value_start++;
11481 }
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11482 else {
11483 /* Jump the argument length. */
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11484 value_start = arg_start + url_param_name_l + 1;
11485
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11486 /* Check for pointer wrapping. */
11487 if (fix_pointer_if_wrap(chunks, &value_start)) {
11488 /* Update the end pointer. */
11489 qs_end = chunks[3];
11490
11491 /* Check for overflow. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11492 if (value_start >= qs_end)
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11493 return 0;
11494 }
11495 }
11496
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11497 value_end = value_start;
11498
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11499 while (1) {
11500 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
11501 value_end++;
11502 if (value_end < qs_end)
11503 break;
11504 /* process buffer wrapping. */
11505 if (value_end >= chunks[0] &&
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11506 value_end < chunks[1] &&
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11507 chunks[2]) {
11508 value_end = chunks[2];
11509 qs_end = chunks[3];
11510 continue;
11511 }
11512 break;
11513 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11514
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11515 *vstart = value_start;
11516 *vend = value_end;
Cyril Bontéce1ef4d2015-11-26 21:39:56 +0100[diff] [blame]11517 return 1;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11518}
11519
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11520/* This scans a URL-encoded query string. It takes an optionally wrapping
11521 * string whose first contigous chunk has its beginning in ctx->a[0] and end
11522 * in ctx->a[1], and the optional second part in (ctx->a[2]..ctx->a[3]). The
11523 * pointers are updated for next iteration before leaving.
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11524 */
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11525static int
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11526smp_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]11527{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11528 const char *vstart, *vend;
11529 struct chunk *temp;
11530 const char **chunks = (const char **)smp->ctx.a;
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11531
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11532 if (!find_next_url_param(chunks,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11533 name, name_len,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11534 &vstart, &vend,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11535 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11536 return 0;
11537
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11538 /* Create sample. If the value is contiguous, return the pointer as CONST,
11539 * if the value is wrapped, copy-it in a buffer.
11540 */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11541 smp->data.type = SMP_T_STR;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11542 if (chunks[2] &&
11543 vstart >= chunks[0] && vstart <= chunks[1] &&
11544 vend >= chunks[2] && vend <= chunks[3]) {
11545 /* Wrapped case. */
11546 temp = get_trash_chunk();
11547 memcpy(temp->str, vstart, chunks[1] - vstart);
11548 memcpy(temp->str + ( chunks[1] - vstart ), chunks[2], vend - chunks[2]);
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11549 smp->data.u.str.str = temp->str;
11550 smp->data.u.str.len = ( chunks[1] - vstart ) + ( vend - chunks[2] );
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11551 } else {
11552 /* Contiguous case. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11553 smp->data.u.str.str = (char *)vstart;
11554 smp->data.u.str.len = vend - vstart;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11555 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
11556 }
11557
11558 /* Update context, check wrapping. */
11559 chunks[0] = vend;
11560 if (chunks[2] && vend >= chunks[2] && vend <= chunks[3]) {
11561 chunks[1] = chunks[3];
11562 chunks[2] = NULL;
11563 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11564
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11565 if (chunks[0] < chunks[1])
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11566 smp->flags |= SMP_F_NOT_LAST;
11567
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11568 return 1;
11569}
11570
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11571/* This function iterates over each parameter of the query string. It uses
11572 * 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]11573 * parameter. Since it uses smp_fetch_param(), ctx->a[2..3] are both NULL.
11574 * An optional parameter name is passed in args[0], otherwise any parameter is
11575 * considered. It supports an optional delimiter argument for the beginning of
11576 * the string in args[1], which defaults to "?".
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11577 */
11578static int
11579smp_fetch_url_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11580{
11581 struct http_msg *msg;
11582 char delim = '?';
11583 const char *name;
11584 int name_len;
11585
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11586 if (!args ||
11587 (args[0].type && args[0].type != ARGT_STR) ||
11588 (args[1].type && args[1].type != ARGT_STR))
11589 return 0;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11590
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11591 name = "";
11592 name_len = 0;
11593 if (args->type == ARGT_STR) {
11594 name = args->data.str.str;
11595 name_len = args->data.str.len;
11596 }
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11597
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11598 if (args[1].type)
11599 delim = *args[1].data.str.str;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11600
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11601 if (!smp->ctx.a[0]) { // first call, find the query string
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11602 CHECK_HTTP_MESSAGE_FIRST();
11603
11604 msg = &smp->strm->txn->req;
11605
11606 smp->ctx.a[0] = find_param_list(msg->chn->buf->p + msg->sl.rq.u,
11607 msg->sl.rq.u_l, delim);
11608 if (!smp->ctx.a[0])
11609 return 0;
11610
11611 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]11612
11613 /* Assume that the context is filled with NULL pointer
11614 * before the first call.
11615 * smp->ctx.a[2] = NULL;
11616 * smp->ctx.a[3] = NULL;
11617 */
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11618 }
11619
11620 return smp_fetch_param(delim, name, name_len, args, smp, kw, private);
11621}
11622
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11623/* This function iterates over each parameter of the body. This requires
11624 * that the body has been waited for using http-buffer-request. It uses
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11625 * ctx->a[0] and ctx->a[1] to store the beginning and end of the first
11626 * contigous part of the body, and optionally ctx->a[2..3] to reference the
11627 * optional second part if the body wraps at the end of the buffer. An optional
11628 * parameter name is passed in args[0], otherwise any parameter is considered.
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11629 */
11630static int
11631smp_fetch_body_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11632{
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11633 struct http_msg *msg;
11634 unsigned long len;
11635 unsigned long block1;
11636 char *body;
11637 const char *name;
11638 int name_len;
11639
11640 if (!args || (args[0].type && args[0].type != ARGT_STR))
11641 return 0;
11642
11643 name = "";
11644 name_len = 0;
11645 if (args[0].type == ARGT_STR) {
11646 name = args[0].data.str.str;
11647 name_len = args[0].data.str.len;
11648 }
11649
11650 if (!smp->ctx.a[0]) { // first call, find the query string
11651 CHECK_HTTP_MESSAGE_FIRST();
11652
11653 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]11654 msg = &smp->strm->txn->req;
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11655 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]11656 msg = &smp->strm->txn->rsp;
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11657
11658 len = http_body_bytes(msg);
11659 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
11660
11661 block1 = len;
11662 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
11663 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
11664
11665 if (block1 == len) {
11666 /* buffer is not wrapped (or empty) */
11667 smp->ctx.a[0] = body;
11668 smp->ctx.a[1] = body + len;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11669
11670 /* Assume that the context is filled with NULL pointer
11671 * before the first call.
11672 * smp->ctx.a[2] = NULL;
11673 * smp->ctx.a[3] = NULL;
11674 */
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11675 }
11676 else {
11677 /* buffer is wrapped, we need to defragment it */
11678 smp->ctx.a[0] = body;
11679 smp->ctx.a[1] = body + block1;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11680 smp->ctx.a[2] = msg->chn->buf->data;
11681 smp->ctx.a[3] = msg->chn->buf->data + ( len - block1 );
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11682 }
11683 }
11684 return smp_fetch_param('&', name, name_len, args, smp, kw, private);
11685}
11686
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11687/* Return the signed integer value for the specified url parameter (see url_param
11688 * above).
11689 */
11690static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11691smp_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]11692{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11693 int ret = smp_fetch_url_param(args, smp, kw, private);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11694
11695 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11696 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11697 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]11698 }
11699
11700 return ret;
11701}
11702
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11703/* This produces a 32-bit hash of the concatenation of the first occurrence of
11704 * the Host header followed by the path component if it begins with a slash ('/').
11705 * This means that '*' will not be added, resulting in exactly the first Host
11706 * entry. If no Host header is found, then the path is used. The resulting value
11707 * is hashed using the url hash followed by a full avalanche hash and provides a
11708 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
11709 * high-traffic sites without having to store whole paths.
11710 * this differs from the base32 functions in that it includes the url parameters
11711 * as well as the path
11712 */
11713static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11714smp_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]11715{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11716 struct http_txn *txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11717 struct hdr_ctx ctx;
11718 unsigned int hash = 0;
11719 char *ptr, *beg, *end;
11720 int len;
11721
11722 CHECK_HTTP_MESSAGE_FIRST();
11723
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11724 txn = smp->strm->txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11725 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11726 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]11727 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
11728 ptr = ctx.line + ctx.val;
11729 len = ctx.vlen;
11730 while (len--)
11731 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
11732 }
11733
11734 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11735 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]11736 beg = http_get_path(txn);
11737 if (!beg)
11738 beg = end;
11739
11740 for (ptr = beg; ptr < end ; ptr++);
11741
11742 if (beg < ptr && *beg == '/') {
11743 while (beg < ptr)
11744 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
11745 }
11746 hash = full_hash(hash);
11747
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11748 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11749 smp->data.u.sint = hash;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11750 smp->flags = SMP_F_VOL_1ST;
11751 return 1;
11752}
11753
11754/* This concatenates the source address with the 32-bit hash of the Host and
11755 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
11756 * per-url counters. The result is a binary block from 8 to 20 bytes depending
11757 * on the source address length. The URL hash is stored before the address so
11758 * that in environments where IPv6 is insignificant, truncating the output to
11759 * 8 bytes would still work.
11760 */
11761static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11762smp_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]11763{
11764 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11765 struct connection *cli_conn = objt_conn(smp->sess->origin);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11766
Dragan Dosendb5af612016-06-16 11:23:01 +0200[diff] [blame]11767 if (!cli_conn)
11768 return 0;
11769
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11770 if (!smp_fetch_url32(args, smp, kw, private))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11771 return 0;
11772
11773 temp = get_trash_chunk();
Dragan Dosene5f41332016-06-16 11:08:08 +0200[diff] [blame]11774 *(unsigned int *)temp->str = htonl(smp->data.u.sint);
11775 temp->len += sizeof(unsigned int);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11776
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11777 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11778 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11779 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]11780 temp->len += 4;
11781 break;
11782 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11783 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]11784 temp->len += 16;
11785 break;
11786 default:
11787 return 0;
11788 }
11789
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11790 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11791 smp->data.type = SMP_T_BIN;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11792 return 1;
11793}
11794
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11795/* This function is used to validate the arguments passed to any "hdr" fetch
11796 * keyword. These keywords support an optional positive or negative occurrence
11797 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
11798 * is assumed that the types are already the correct ones. Returns 0 on error,
11799 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
11800 * error message in case of error, that the caller is responsible for freeing.
11801 * The initial location must either be freeable or NULL.
11802 */
Thierry FOURNIER49f45af2014-12-08 19:50:43 +0100[diff] [blame]11803int val_hdr(struct arg *arg, char **err_msg)
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11804{
11805 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]11806 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11807 return 0;
11808 }
11809 return 1;
11810}
11811
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11812/* takes an UINT value on input supposed to represent the time since EPOCH,
11813 * adds an optional offset found in args[0] and emits a string representing
11814 * the date in RFC-1123/5322 format.
11815 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11816static int sample_conv_http_date(const struct arg *args, struct sample *smp, void *private)
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11817{
Cyril Bontéf78d8962016-01-22 19:40:28 +0100[diff] [blame]11818 const char day[7][4] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11819 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
11820 struct chunk *temp;
11821 struct tm *tm;
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11822 /* 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]11823 time_t curr_date = smp->data.u.sint & 0x007fffffffffffffLL;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11824
11825 /* add offset */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11826 if (args && (args[0].type == ARGT_SINT))
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11827 curr_date += args[0].data.sint;
11828
11829 tm = gmtime(&curr_date);
Thierry FOURNIERfac9ccf2015-07-08 00:15:20 +0200[diff] [blame]11830 if (!tm)
11831 return 0;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11832
11833 temp = get_trash_chunk();
11834 temp->len = snprintf(temp->str, temp->size - temp->len,
11835 "%s, %02d %s %04d %02d:%02d:%02d GMT",
11836 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
11837 tm->tm_hour, tm->tm_min, tm->tm_sec);
11838
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11839 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11840 smp->data.type = SMP_T_STR;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11841 return 1;
11842}
11843
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11844/* Match language range with language tag. RFC2616 14.4:
11845 *
11846 * A language-range matches a language-tag if it exactly equals
11847 * the tag, or if it exactly equals a prefix of the tag such
11848 * that the first tag character following the prefix is "-".
11849 *
11850 * Return 1 if the strings match, else return 0.
11851 */
11852static inline int language_range_match(const char *range, int range_len,
11853 const char *tag, int tag_len)
11854{
11855 const char *end = range + range_len;
11856 const char *tend = tag + tag_len;
11857 while (range < end) {
11858 if (*range == '-' && tag == tend)
11859 return 1;
11860 if (*range != *tag || tag == tend)
11861 return 0;
11862 range++;
11863 tag++;
11864 }
11865 /* Return true only if the last char of the tag is matched. */
11866 return tag == tend;
11867}
11868
11869/* Arguments: The list of expected value, the number of parts returned and the separator */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11870static int sample_conv_q_prefered(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11871{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11872 const char *al = smp->data.u.str.str;
11873 const char *end = al + smp->data.u.str.len;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11874 const char *token;
11875 int toklen;
11876 int qvalue;
11877 const char *str;
11878 const char *w;
11879 int best_q = 0;
11880
11881 /* Set the constant to the sample, because the output of the
11882 * function will be peek in the constant configuration string.
11883 */
11884 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11885 smp->data.u.str.size = 0;
11886 smp->data.u.str.str = "";
11887 smp->data.u.str.len = 0;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11888
11889 /* Parse the accept language */
11890 while (1) {
11891
11892 /* Jump spaces, quit 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 break;
11897
11898 /* Start of the fisrt word. */
11899 token = al;
11900
11901 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11902 while (al < end && *al != ';' && *al != ',' && !isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11903 al++;
11904 if (al == token)
11905 goto expect_comma;
11906
11907 /* Length of the token. */
11908 toklen = al - token;
11909 qvalue = 1000;
11910
11911 /* Check if the token exists in the list. If the token not exists,
11912 * jump to the next token.
11913 */
11914 str = args[0].data.str.str;
11915 w = str;
11916 while (1) {
11917 if (*str == ';' || *str == '\0') {
11918 if (language_range_match(token, toklen, w, str-w))
11919 goto look_for_q;
11920 if (*str == '\0')
11921 goto expect_comma;
11922 w = str + 1;
11923 }
11924 str++;
11925 }
11926 goto expect_comma;
11927
11928look_for_q:
11929
11930 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11931 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11932 al++;
11933 if (al >= end)
11934 goto process_value;
11935
11936 /* If ',' is found, process the result */
11937 if (*al == ',')
11938 goto process_value;
11939
11940 /* If the character is different from ';', look
11941 * for the end of the header part in best effort.
11942 */
11943 if (*al != ';')
11944 goto expect_comma;
11945
11946 /* Assumes that the char is ';', now expect "q=". */
11947 al++;
11948
11949 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11950 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11951 al++;
11952 if (al >= end)
11953 goto process_value;
11954
11955 /* Expect 'q'. If no 'q', continue in best effort */
11956 if (*al != 'q')
11957 goto process_value;
11958 al++;
11959
11960 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11961 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11962 al++;
11963 if (al >= end)
11964 goto process_value;
11965
11966 /* Expect '='. If no '=', continue in best effort */
11967 if (*al != '=')
11968 goto process_value;
11969 al++;
11970
11971 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11972 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11973 al++;
11974 if (al >= end)
11975 goto process_value;
11976
11977 /* Parse the q value. */
11978 qvalue = parse_qvalue(al, &al);
11979
11980process_value:
11981
11982 /* If the new q value is the best q value, then store the associated
11983 * language in the response. If qvalue is the biggest value (1000),
11984 * break the process.
11985 */
11986 if (qvalue > best_q) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11987 smp->data.u.str.str = (char *)w;
11988 smp->data.u.str.len = str - w;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11989 if (qvalue >= 1000)
11990 break;
11991 best_q = qvalue;
11992 }
11993
11994expect_comma:
11995
11996 /* Expect comma or end. If the end is detected, quit the loop. */
11997 while (al < end && *al != ',')
11998 al++;
11999 if (al >= end)
12000 break;
12001
12002 /* Comma is found, jump it and restart the analyzer. */
12003 al++;
12004 }
12005
12006 /* Set default value if required. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12007 if (smp->data.u.str.len == 0 && args[1].type == ARGT_STR) {
12008 smp->data.u.str.str = args[1].data.str.str;
12009 smp->data.u.str.len = args[1].data.str.len;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12010 }
12011
12012 /* Return true only if a matching language was found. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12013 return smp->data.u.str.len != 0;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12014}
12015
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12016/* This fetch url-decode any input string. */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12017static int sample_conv_url_dec(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12018{
12019 /* If the constant flag is set or if not size is avalaible at
12020 * the end of the buffer, copy the string in other buffer
12021 * before decoding.
12022 */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12023 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]12024 struct chunk *str = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12025 memcpy(str->str, smp->data.u.str.str, smp->data.u.str.len);
12026 smp->data.u.str.str = str->str;
12027 smp->data.u.str.size = str->size;
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12028 smp->flags &= ~SMP_F_CONST;
12029 }
12030
12031 /* Add final \0 required by url_decode(), and convert the input string. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12032 smp->data.u.str.str[smp->data.u.str.len] = '\0';
12033 smp->data.u.str.len = url_decode(smp->data.u.str.str);
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12034 return 1;
12035}
12036
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12037static int smp_conv_req_capture(const struct arg *args, struct sample *smp, void *private)
12038{
12039 struct proxy *fe = strm_fe(smp->strm);
12040 int idx, i;
12041 struct cap_hdr *hdr;
12042 int len;
12043
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12044 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12045 return 0;
12046
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12047 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12048
12049 /* Check the availibity of the capture id. */
12050 if (idx > fe->nb_req_cap - 1)
12051 return 0;
12052
12053 /* Look for the original configuration. */
12054 for (hdr = fe->req_cap, i = fe->nb_req_cap - 1;
12055 hdr != NULL && i != idx ;
12056 i--, hdr = hdr->next);
12057 if (!hdr)
12058 return 0;
12059
12060 /* check for the memory allocation */
12061 if (smp->strm->req_cap[hdr->index] == NULL)
12062 smp->strm->req_cap[hdr->index] = pool_alloc2(hdr->pool);
12063 if (smp->strm->req_cap[hdr->index] == NULL)
12064 return 0;
12065
12066 /* Check length. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12067 len = smp->data.u.str.len;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12068 if (len > hdr->len)
12069 len = hdr->len;
12070
12071 /* Capture input data. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12072 memcpy(smp->strm->req_cap[idx], smp->data.u.str.str, len);
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12073 smp->strm->req_cap[idx][len] = '\0';
12074
12075 return 1;
12076}
12077
12078static int smp_conv_res_capture(const struct arg *args, struct sample *smp, void *private)
12079{
12080 struct proxy *fe = strm_fe(smp->strm);
12081 int idx, i;
12082 struct cap_hdr *hdr;
12083 int len;
12084
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12085 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12086 return 0;
12087
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12088 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12089
12090 /* Check the availibity of the capture id. */
12091 if (idx > fe->nb_rsp_cap - 1)
12092 return 0;
12093
12094 /* Look for the original configuration. */
12095 for (hdr = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
12096 hdr != NULL && i != idx ;
12097 i--, hdr = hdr->next);
12098 if (!hdr)
12099 return 0;
12100
12101 /* check for the memory allocation */
12102 if (smp->strm->res_cap[hdr->index] == NULL)
12103 smp->strm->res_cap[hdr->index] = pool_alloc2(hdr->pool);
12104 if (smp->strm->res_cap[hdr->index] == NULL)
12105 return 0;
12106
12107 /* Check length. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12108 len = smp->data.u.str.len;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12109 if (len > hdr->len)
12110 len = hdr->len;
12111
12112 /* Capture input data. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12113 memcpy(smp->strm->res_cap[idx], smp->data.u.str.str, len);
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12114 smp->strm->res_cap[idx][len] = '\0';
12115
12116 return 1;
12117}
12118
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12119/* This function executes one of the set-{method,path,query,uri} actions. It
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12120 * takes the string from the variable 'replace' with length 'len', then modifies
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12121 * the relevant part of the request line accordingly. Then it updates various
12122 * pointers to the next elements which were moved, and the total buffer length.
12123 * It finds the action to be performed in p[2], previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12124 * parse_set_req_line(). It returns 0 in case of success, -1 in case of internal
12125 * error, though this can be revisited when this code is finally exploited.
12126 *
12127 * 'action' can be '0' to replace method, '1' to replace path, '2' to replace
12128 * query string and 3 to replace uri.
12129 *
12130 * In query string case, the mark question '?' must be set at the start of the
12131 * string by the caller, event if the replacement query string is empty.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12132 */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12133int http_replace_req_line(int action, const char *replace, int len,
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12134 struct proxy *px, struct stream *s)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12135{
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12136 struct http_txn *txn = s->txn;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12137 char *cur_ptr, *cur_end;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12138 int offset = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12139 int delta;
12140
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12141 switch (action) {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12142 case 0: // method
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12143 cur_ptr = s->req.buf->p;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12144 cur_end = cur_ptr + txn->req.sl.rq.m_l;
12145
12146 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12147 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12148 txn->req.sl.rq.m_l += delta;
12149 txn->req.sl.rq.u += delta;
12150 txn->req.sl.rq.v += delta;
12151 break;
12152
12153 case 1: // path
12154 cur_ptr = http_get_path(txn);
12155 if (!cur_ptr)
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12156 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12157
12158 cur_end = cur_ptr;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12159 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]12160 cur_end++;
12161
12162 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12163 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12164 txn->req.sl.rq.u_l += delta;
12165 txn->req.sl.rq.v += delta;
12166 break;
12167
12168 case 2: // query
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12169 offset = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12170 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12171 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12172 while (cur_ptr < cur_end && *cur_ptr != '?')
12173 cur_ptr++;
12174
12175 /* skip the question mark or indicate that we must insert it
12176 * (but only if the format string is not empty then).
12177 */
12178 if (cur_ptr < cur_end)
12179 cur_ptr++;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12180 else if (len > 1)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12181 offset = 0;
12182
12183 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12184 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12185 txn->req.sl.rq.u_l += delta;
12186 txn->req.sl.rq.v += delta;
12187 break;
12188
12189 case 3: // uri
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12190 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12191 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12192
12193 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12194 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12195 txn->req.sl.rq.u_l += delta;
12196 txn->req.sl.rq.v += delta;
12197 break;
12198
12199 default:
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12200 return -1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12201 }
12202
12203 /* commit changes and adjust end of message */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12204 delta = buffer_replace2(s->req.buf, cur_ptr, cur_end, replace + offset, len - offset);
Thierry FOURNIER7f6192c2015-04-26 18:01:40 +0200[diff] [blame]12205 txn->req.sl.rq.l += delta;
12206 txn->hdr_idx.v[0].len += delta;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12207 http_msg_move_end(&txn->req, delta);
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12208 return 0;
12209}
12210
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12211/* This function replace the HTTP status code and the associated message. The
12212 * variable <status> contains the new status code. This function never fails.
12213 */
12214void http_set_status(unsigned int status, struct stream *s)
12215{
12216 struct http_txn *txn = s->txn;
12217 char *cur_ptr, *cur_end;
12218 int delta;
12219 char *res;
12220 int c_l;
12221 const char *msg;
12222 int msg_len;
12223
12224 chunk_reset(&trash);
12225
12226 res = ultoa_o(status, trash.str, trash.size);
12227 c_l = res - trash.str;
12228
12229 trash.str[c_l] = ' ';
12230 trash.len = c_l + 1;
12231
12232 msg = get_reason(status);
12233 msg_len = strlen(msg);
12234
12235 strncpy(&trash.str[trash.len], msg, trash.size - trash.len);
12236 trash.len += msg_len;
12237
12238 cur_ptr = s->res.buf->p + txn->rsp.sl.st.c;
12239 cur_end = s->res.buf->p + txn->rsp.sl.st.r + txn->rsp.sl.st.r_l;
12240
12241 /* commit changes and adjust message */
12242 delta = buffer_replace2(s->res.buf, cur_ptr, cur_end, trash.str, trash.len);
12243
12244 /* adjust res line offsets and lengths */
12245 txn->rsp.sl.st.r += c_l - txn->rsp.sl.st.c_l;
12246 txn->rsp.sl.st.c_l = c_l;
12247 txn->rsp.sl.st.r_l = msg_len;
12248
12249 delta = trash.len - (cur_end - cur_ptr);
12250 txn->rsp.sl.st.l += delta;
12251 txn->hdr_idx.v[0].len += delta;
12252 http_msg_move_end(&txn->rsp, delta);
12253}
12254
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12255/* This function executes one of the set-{method,path,query,uri} actions. It
12256 * builds a string in the trash from the specified format string. It finds
Thierry FOURNIER3f4bc652015-08-26 16:23:34 +0200[diff] [blame]12257 * the action to be performed in <http.action>, previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12258 * parse_set_req_line(). The replacement action is excuted by the function
Thierry FOURNIER3f4bc652015-08-26 16:23:34 +0200[diff] [blame]12259 * http_action_set_req_line(). It always returns ACT_RET_CONT. If an error
12260 * occurs the action is canceled, but the rule processing continue.
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12261 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12262enum act_return http_action_set_req_line(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12263 struct session *sess, struct stream *s, int flags)
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12264{
12265 chunk_reset(&trash);
12266
12267 /* If we have to create a query string, prepare a '?'. */
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12268 if (rule->arg.http.action == 2)
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12269 trash.str[trash.len++] = '?';
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12270 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]12271
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12272 http_replace_req_line(rule->arg.http.action, trash.str, trash.len, px, s);
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12273 return ACT_RET_CONT;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12274}
12275
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12276/* This function is just a compliant action wrapper for "set-status". */
12277enum act_return action_http_set_status(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12278 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12279{
12280 http_set_status(rule->arg.status.code, s);
12281 return ACT_RET_CONT;
12282}
12283
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12284/* parse an http-request action among :
12285 * set-method
12286 * set-path
12287 * set-query
12288 * set-uri
12289 *
12290 * All of them accept a single argument of type string representing a log-format.
12291 * The resulting rule makes use of arg->act.p[0..1] to store the log-format list
12292 * 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]12293 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12294 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12295enum act_parse_ret parse_set_req_line(const char **args, int *orig_arg, struct proxy *px,
12296 struct act_rule *rule, char **err)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12297{
12298 int cur_arg = *orig_arg;
12299
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12300 rule->action = ACT_CUSTOM;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12301
12302 switch (args[0][4]) {
12303 case 'm' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12304 rule->arg.http.action = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12305 rule->action_ptr = http_action_set_req_line;
12306 break;
12307 case 'p' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12308 rule->arg.http.action = 1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12309 rule->action_ptr = http_action_set_req_line;
12310 break;
12311 case 'q' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12312 rule->arg.http.action = 2;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12313 rule->action_ptr = http_action_set_req_line;
12314 break;
12315 case 'u' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12316 rule->arg.http.action = 3;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12317 rule->action_ptr = http_action_set_req_line;
12318 break;
12319 default:
12320 memprintf(err, "internal error: unhandled action '%s'", args[0]);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12321 return ACT_RET_PRS_ERR;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12322 }
12323
12324 if (!*args[cur_arg] ||
12325 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
12326 memprintf(err, "expects exactly 1 argument <format>");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12327 return ACT_RET_PRS_ERR;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12328 }
12329
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12330 LIST_INIT(&rule->arg.http.logfmt);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12331 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12332 parse_logformat_string(args[cur_arg], proxy, &rule->arg.http.logfmt, LOG_OPT_HTTP,
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12333 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
12334 proxy->conf.args.file, proxy->conf.args.line);
12335
12336 (*orig_arg)++;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12337 return ACT_RET_PRS_OK;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12338}
12339
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12340/* parse set-status action:
12341 * This action accepts a single argument of type int representing
12342 * an http status code. It returns ACT_RET_PRS_OK on success,
12343 * ACT_RET_PRS_ERR on error.
12344 */
12345enum act_parse_ret parse_http_set_status(const char **args, int *orig_arg, struct proxy *px,
12346 struct act_rule *rule, char **err)
12347{
12348 char *error;
12349
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12350 rule->action = ACT_CUSTOM;
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12351 rule->action_ptr = action_http_set_status;
12352
12353 /* Check if an argument is available */
12354 if (!*args[*orig_arg]) {
12355 memprintf(err, "expects exactly 1 argument <status>");
12356 return ACT_RET_PRS_ERR;
12357 }
12358
12359 /* convert status code as integer */
12360 rule->arg.status.code = strtol(args[*orig_arg], &error, 10);
12361 if (*error != '\0' || rule->arg.status.code < 100 || rule->arg.status.code > 999) {
12362 memprintf(err, "expects an integer status code between 100 and 999");
12363 return ACT_RET_PRS_ERR;
12364 }
12365
12366 (*orig_arg)++;
12367 return ACT_RET_PRS_OK;
12368}
12369
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12370/* This function executes the "capture" action. It executes a fetch expression,
12371 * turns the result into a string and puts it in a capture slot. It always
12372 * returns 1. If an error occurs the action is cancelled, but the rule
12373 * processing continues.
12374 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12375enum act_return http_action_req_capture(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12376 struct session *sess, struct stream *s, int flags)
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12377{
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12378 struct sample *key;
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12379 struct cap_hdr *h = rule->arg.cap.hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12380 char **cap = s->req_cap;
12381 int len;
12382
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12383 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]12384 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12385 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12386
12387 if (cap[h->index] == NULL)
12388 cap[h->index] = pool_alloc2(h->pool);
12389
12390 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12391 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12392
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12393 len = key->data.u.str.len;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12394 if (len > h->len)
12395 len = h->len;
12396
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12397 memcpy(cap[h->index], key->data.u.str.str, len);
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12398 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12399 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12400}
12401
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12402/* This function executes the "capture" action and store the result in a
12403 * capture slot if exists. It executes a fetch expression, turns the result
12404 * into a string and puts it in a capture slot. It always returns 1. If an
12405 * error occurs the action is cancelled, but the rule processing continues.
12406 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12407enum 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]12408 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12409{
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12410 struct sample *key;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12411 struct cap_hdr *h;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12412 char **cap = s->req_cap;
12413 struct proxy *fe = strm_fe(s);
12414 int len;
12415 int i;
12416
12417 /* Look for the original configuration. */
12418 for (h = fe->req_cap, i = fe->nb_req_cap - 1;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12419 h != NULL && i != rule->arg.capid.idx ;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12420 i--, h = h->next);
12421 if (!h)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12422 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12423
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12424 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]12425 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12426 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12427
12428 if (cap[h->index] == NULL)
12429 cap[h->index] = pool_alloc2(h->pool);
12430
12431 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12432 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12433
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12434 len = key->data.u.str.len;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12435 if (len > h->len)
12436 len = h->len;
12437
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12438 memcpy(cap[h->index], key->data.u.str.str, len);
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12439 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12440 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12441}
12442
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12443/* parse an "http-request capture" action. It takes a single argument which is
12444 * a sample fetch expression. It stores the expression into arg->act.p[0] and
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12445 * the allocated hdr_cap struct or the preallocated "id" into arg->act.p[1].
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12446 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12447 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12448enum act_parse_ret parse_http_req_capture(const char **args, int *orig_arg, struct proxy *px,
12449 struct act_rule *rule, char **err)
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12450{
12451 struct sample_expr *expr;
12452 struct cap_hdr *hdr;
12453 int cur_arg;
Willy Tarreau3986ac12015-05-08 16:13:42 +0200[diff] [blame]12454 int len = 0;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12455
12456 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12457 if (strcmp(args[cur_arg], "if") == 0 ||
12458 strcmp(args[cur_arg], "unless") == 0)
12459 break;
12460
12461 if (cur_arg < *orig_arg + 3) {
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12462 memprintf(err, "expects <expression> [ 'len' <length> | id <idx> ]");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12463 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12464 }
12465
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12466 cur_arg = *orig_arg;
12467 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12468 if (!expr)
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12469 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12470
12471 if (!(expr->fetch->val & SMP_VAL_FE_HRQ_HDR)) {
12472 memprintf(err,
12473 "fetch method '%s' extracts information from '%s', none of which is available here",
12474 args[cur_arg-1], sample_src_names(expr->fetch->use));
12475 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12476 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12477 }
12478
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12479 if (!args[cur_arg] || !*args[cur_arg]) {
12480 memprintf(err, "expects 'len or 'id'");
12481 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12482 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12483 }
12484
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12485 if (strcmp(args[cur_arg], "len") == 0) {
12486 cur_arg++;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12487
12488 if (!(px->cap & PR_CAP_FE)) {
12489 memprintf(err, "proxy '%s' has no frontend capability", px->id);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12490 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12491 }
12492
12493 proxy->conf.args.ctx = ARGC_CAP;
12494
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12495 if (!args[cur_arg]) {
12496 memprintf(err, "missing length value");
12497 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12498 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12499 }
12500 /* we copy the table name for now, it will be resolved later */
12501 len = atoi(args[cur_arg]);
12502 if (len <= 0) {
12503 memprintf(err, "length must be > 0");
12504 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12505 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12506 }
12507 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12508
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12509 if (!len) {
12510 memprintf(err, "a positive 'len' argument is mandatory");
12511 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12512 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12513 }
12514
Vincent Bernat02779b62016-04-03 13:48:43 +0200[diff] [blame]12515 hdr = calloc(1, sizeof(*hdr));
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12516 hdr->next = px->req_cap;
12517 hdr->name = NULL; /* not a header capture */
12518 hdr->namelen = 0;
12519 hdr->len = len;
12520 hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
12521 hdr->index = px->nb_req_cap++;
12522
12523 px->req_cap = hdr;
12524 px->to_log |= LW_REQHDR;
12525
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12526 rule->action = ACT_CUSTOM;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12527 rule->action_ptr = http_action_req_capture;
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12528 rule->arg.cap.expr = expr;
12529 rule->arg.cap.hdr = hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12530 }
12531
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12532 else if (strcmp(args[cur_arg], "id") == 0) {
12533 int id;
12534 char *error;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12535
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12536 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12537
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12538 if (!args[cur_arg]) {
12539 memprintf(err, "missing id value");
12540 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12541 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12542 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12543
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12544 id = strtol(args[cur_arg], &error, 10);
12545 if (*error != '\0') {
12546 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12547 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12548 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12549 }
12550 cur_arg++;
12551
12552 proxy->conf.args.ctx = ARGC_CAP;
12553
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12554 rule->action = ACT_CUSTOM;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12555 rule->action_ptr = http_action_req_capture_by_id;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12556 rule->arg.capid.expr = expr;
12557 rule->arg.capid.idx = id;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12558 }
12559
12560 else {
12561 memprintf(err, "expects 'len' or 'id', found '%s'", args[cur_arg]);
12562 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12563 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12564 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12565
12566 *orig_arg = cur_arg;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12567 return ACT_RET_PRS_OK;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12568}
12569
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12570/* This function executes the "capture" action and store the result in a
12571 * capture slot if exists. It executes a fetch expression, turns the result
12572 * into a string and puts it in a capture slot. It always returns 1. If an
12573 * error occurs the action is cancelled, but the rule processing continues.
12574 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12575enum 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]12576 struct session *sess, struct stream *s, int flags)
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12577{
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12578 struct sample *key;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12579 struct cap_hdr *h;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12580 char **cap = s->res_cap;
12581 struct proxy *fe = strm_fe(s);
12582 int len;
12583 int i;
12584
12585 /* Look for the original configuration. */
12586 for (h = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12587 h != NULL && i != rule->arg.capid.idx ;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12588 i--, h = h->next);
12589 if (!h)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12590 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12591
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12592 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]12593 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12594 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12595
12596 if (cap[h->index] == NULL)
12597 cap[h->index] = pool_alloc2(h->pool);
12598
12599 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12600 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12601
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12602 len = key->data.u.str.len;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12603 if (len > h->len)
12604 len = h->len;
12605
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12606 memcpy(cap[h->index], key->data.u.str.str, len);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12607 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12608 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12609}
12610
12611/* parse an "http-response capture" action. It takes a single argument which is
12612 * a sample fetch expression. It stores the expression into arg->act.p[0] and
12613 * the allocated hdr_cap struct od the preallocated id into arg->act.p[1].
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12614 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12615 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12616enum act_parse_ret parse_http_res_capture(const char **args, int *orig_arg, struct proxy *px,
12617 struct act_rule *rule, char **err)
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12618{
12619 struct sample_expr *expr;
12620 int cur_arg;
12621 int id;
12622 char *error;
12623
12624 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12625 if (strcmp(args[cur_arg], "if") == 0 ||
12626 strcmp(args[cur_arg], "unless") == 0)
12627 break;
12628
12629 if (cur_arg < *orig_arg + 3) {
Willy Tarreau29bdb1c2016-06-24 15:36:34 +0200[diff] [blame]12630 memprintf(err, "expects <expression> id <idx>");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12631 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12632 }
12633
12634 cur_arg = *orig_arg;
12635 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12636 if (!expr)
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12637 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12638
12639 if (!(expr->fetch->val & SMP_VAL_FE_HRS_HDR)) {
12640 memprintf(err,
12641 "fetch method '%s' extracts information from '%s', none of which is available here",
12642 args[cur_arg-1], sample_src_names(expr->fetch->use));
12643 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12644 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12645 }
12646
12647 if (!args[cur_arg] || !*args[cur_arg]) {
Willy Tarreau29bdb1c2016-06-24 15:36:34 +0200[diff] [blame]12648 memprintf(err, "expects 'id'");
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12649 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12650 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12651 }
12652
12653 if (strcmp(args[cur_arg], "id") != 0) {
12654 memprintf(err, "expects 'id', found '%s'", args[cur_arg]);
12655 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12656 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12657 }
12658
12659 cur_arg++;
12660
12661 if (!args[cur_arg]) {
12662 memprintf(err, "missing id value");
12663 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12664 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12665 }
12666
12667 id = strtol(args[cur_arg], &error, 10);
12668 if (*error != '\0') {
12669 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12670 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12671 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12672 }
12673 cur_arg++;
12674
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12675 proxy->conf.args.ctx = ARGC_CAP;
12676
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12677 rule->action = ACT_CUSTOM;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12678 rule->action_ptr = http_action_res_capture_by_id;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12679 rule->arg.capid.expr = expr;
12680 rule->arg.capid.idx = id;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12681
12682 *orig_arg = cur_arg;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12683 return ACT_RET_PRS_OK;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12684}
12685
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12686/*
12687 * Return the struct http_req_action_kw associated to a keyword.
12688 */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12689struct action_kw *action_http_req_custom(const char *kw)
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12690{
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]12691 return action_lookup(&http_req_keywords.list, kw);
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12692}
12693
12694/*
12695 * Return the struct http_res_action_kw associated to a keyword.
12696 */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12697struct action_kw *action_http_res_custom(const char *kw)
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12698{
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]12699 return action_lookup(&http_res_keywords.list, kw);
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12700}
12701
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12702/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12703/* All supported ACL keywords must be declared here. */
12704/************************************************************************/
12705
12706/* Note: must not be declared <const> as its list will be overwritten.
12707 * Please take care of keeping this list alphabetically sorted.
12708 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]12709static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12710 { "base", "base", PAT_MATCH_STR },
12711 { "base_beg", "base", PAT_MATCH_BEG },
12712 { "base_dir", "base", PAT_MATCH_DIR },
12713 { "base_dom", "base", PAT_MATCH_DOM },
12714 { "base_end", "base", PAT_MATCH_END },
12715 { "base_len", "base", PAT_MATCH_LEN },
12716 { "base_reg", "base", PAT_MATCH_REG },
12717 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]12718
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12719 { "cook", "req.cook", PAT_MATCH_STR },
12720 { "cook_beg", "req.cook", PAT_MATCH_BEG },
12721 { "cook_dir", "req.cook", PAT_MATCH_DIR },
12722 { "cook_dom", "req.cook", PAT_MATCH_DOM },
12723 { "cook_end", "req.cook", PAT_MATCH_END },
12724 { "cook_len", "req.cook", PAT_MATCH_LEN },
12725 { "cook_reg", "req.cook", PAT_MATCH_REG },
12726 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12727
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12728 { "hdr", "req.hdr", PAT_MATCH_STR },
12729 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
12730 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
12731 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
12732 { "hdr_end", "req.hdr", PAT_MATCH_END },
12733 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
12734 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
12735 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12736
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12737 /* these two declarations uses strings with list storage (in place
12738 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
12739 * and delete functions are relative to the list management. The parse
12740 * and match method are related to the corresponding fetch methods. This
12741 * is very particular ACL declaration mode.
12742 */
12743 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
12744 { "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]12745
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12746 { "path", "path", PAT_MATCH_STR },
12747 { "path_beg", "path", PAT_MATCH_BEG },
12748 { "path_dir", "path", PAT_MATCH_DIR },
12749 { "path_dom", "path", PAT_MATCH_DOM },
12750 { "path_end", "path", PAT_MATCH_END },
12751 { "path_len", "path", PAT_MATCH_LEN },
12752 { "path_reg", "path", PAT_MATCH_REG },
12753 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12754
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12755 { "req_ver", "req.ver", PAT_MATCH_STR },
12756 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12757
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12758 { "scook", "res.cook", PAT_MATCH_STR },
12759 { "scook_beg", "res.cook", PAT_MATCH_BEG },
12760 { "scook_dir", "res.cook", PAT_MATCH_DIR },
12761 { "scook_dom", "res.cook", PAT_MATCH_DOM },
12762 { "scook_end", "res.cook", PAT_MATCH_END },
12763 { "scook_len", "res.cook", PAT_MATCH_LEN },
12764 { "scook_reg", "res.cook", PAT_MATCH_REG },
12765 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12766
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12767 { "shdr", "res.hdr", PAT_MATCH_STR },
12768 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
12769 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
12770 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
12771 { "shdr_end", "res.hdr", PAT_MATCH_END },
12772 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
12773 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
12774 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12775
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12776 { "url", "url", PAT_MATCH_STR },
12777 { "url_beg", "url", PAT_MATCH_BEG },
12778 { "url_dir", "url", PAT_MATCH_DIR },
12779 { "url_dom", "url", PAT_MATCH_DOM },
12780 { "url_end", "url", PAT_MATCH_END },
12781 { "url_len", "url", PAT_MATCH_LEN },
12782 { "url_reg", "url", PAT_MATCH_REG },
12783 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12784
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12785 { "urlp", "urlp", PAT_MATCH_STR },
12786 { "urlp_beg", "urlp", PAT_MATCH_BEG },
12787 { "urlp_dir", "urlp", PAT_MATCH_DIR },
12788 { "urlp_dom", "urlp", PAT_MATCH_DOM },
12789 { "urlp_end", "urlp", PAT_MATCH_END },
12790 { "urlp_len", "urlp", PAT_MATCH_LEN },
12791 { "urlp_reg", "urlp", PAT_MATCH_REG },
12792 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12793
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]12794 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12795}};
12796
12797/************************************************************************/
12798/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12799/************************************************************************/
12800/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]12801static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12802 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12803 { "base32", smp_fetch_base32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12804 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
12805
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]12806 /* capture are allocated and are permanent in the stream */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12807 { "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]12808
12809 /* retrieve these captures from the HTTP logs */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12810 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12811 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12812 { "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]12813
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12814 { "capture.res.hdr", smp_fetch_capture_header_res, ARG1(1,SINT), NULL, SMP_T_STR, SMP_USE_HRSHP },
12815 { "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]12816
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12817 /* cookie is valid in both directions (eg: for "stick ...") but cook*
12818 * are only here to match the ACL's name, are request-only and are used
12819 * for ACL compatibility only.
12820 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12821 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
12822 { "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]12823 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
12824 { "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]12825
12826 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
12827 * only here to match the ACL's name, are request-only and are used for
12828 * ACL compatibility only.
12829 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12830 { "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]12831 { "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]12832 { "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]12833 { "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]12834
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]12835 { "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]12836 { "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]12837 { "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]12838 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12839 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]12840 { "query", smp_fetch_query, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12841
12842 /* HTTP protocol on the request path */
12843 { "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]12844 { "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]12845
12846 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12847 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
12848 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12849
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]12850 { "req.body", smp_fetch_body, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12851 { "req.body_len", smp_fetch_body_len, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
12852 { "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]12853 { "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]12854
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12855 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12856 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
12857 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12858
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12859 /* 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]12860 { "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]12861 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
12862 { "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]12863
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12864 { "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]12865 { "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]12866 { "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]12867 { "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]12868 { "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]12869 { "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]12870 { "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]12871
12872 /* 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]12873 { "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]12874 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
12875 { "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]12876
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12877 { "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]12878 { "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]12879 { "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]12880 { "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]12881 { "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]12882 { "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]12883 { "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]12884
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12885 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12886 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12887 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
12888 { "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]12889 { "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]12890
12891 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12892 { "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]12893 { "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]12894 { "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]12895 { "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]12896
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12897 { "status", smp_fetch_stcode, 0, NULL, SMP_T_SINT, SMP_USE_HRSHP },
Thierry Fournier0e00dca2016-04-07 15:47:40 +0200[diff] [blame]12898 { "unique-id", smp_fetch_uniqueid, 0, NULL, SMP_T_STR, SMP_SRC_L4SRV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12899 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12900 { "url32", smp_fetch_url32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12901 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12902 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12903 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]12904 { "url_param", smp_fetch_url_param, ARG2(0,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
12905 { "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]12906 { "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]12907 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12908}};
12909
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12910
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12911/************************************************************************/
12912/* All supported converter keywords must be declared here. */
12913/************************************************************************/
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12914/* Note: must not be declared <const> as its list will be overwritten */
12915static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12916 { "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]12917 { "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]12918 { "capture-req", smp_conv_req_capture, ARG1(1,SINT), NULL, SMP_T_STR, SMP_T_STR},
12919 { "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]12920 { "url_dec", sample_conv_url_dec, 0, NULL, SMP_T_STR, SMP_T_STR},
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12921 { NULL, NULL, 0, 0, 0 },
12922}};
12923
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12924
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12925/************************************************************************/
12926/* All supported http-request action keywords must be declared here. */
12927/************************************************************************/
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12928struct action_kw_list http_req_actions = {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12929 .kw = {
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12930 { "capture", parse_http_req_capture },
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12931 { "set-method", parse_set_req_line },
12932 { "set-path", parse_set_req_line },
12933 { "set-query", parse_set_req_line },
12934 { "set-uri", parse_set_req_line },
Willy Tarreaucb703b02015-04-03 09:52:01 +0200[diff] [blame]12935 { NULL, NULL }
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12936 }
12937};
12938
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12939struct action_kw_list http_res_actions = {
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12940 .kw = {
12941 { "capture", parse_http_res_capture },
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12942 { "set-status", parse_http_set_status },
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12943 { NULL, NULL }
12944 }
12945};
12946
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12947__attribute__((constructor))
12948static void __http_protocol_init(void)
12949{
12950 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]12951 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12952 sample_register_convs(&sample_conv_kws);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12953 http_req_keywords_register(&http_req_actions);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12954 http_res_keywords_register(&http_res_actions);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12955}
12956
12957
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]12958/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]12959 * Local variables:
12960 * c-indent-level: 8
12961 * c-basic-offset: 8
12962 * End:
12963 */