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git01.mediatek.com / haproxy / 8ab79420bacc236ad364fc8c2ac48a29f821704e / . / src / proto_http.c
blob: 7d1b6787276dea08b29be928438fe094a61e8133 [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1/*
2 * HTTP protocol analyzer
3 *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4 * Copyright 2000-2011 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <ctype.h>
14#include <errno.h>
15#include <fcntl.h>
16#include <stdio.h>
17#include <stdlib.h>
18#include <string.h>
19#include <syslog.h>
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]20#include <time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]21
22#include <sys/socket.h>
23#include <sys/stat.h>
24#include <sys/types.h>
25
Willy Tarreaub05405a2012-01-23 15:35:52 +0100[diff] [blame]26#include <netinet/tcp.h>
27
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]28#include <common/base64.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]29#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]30#include <common/compat.h>
31#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +0100[diff] [blame]32#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]33#include <common/memory.h>
34#include <common/mini-clist.h>
35#include <common/standard.h>
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]36#include <common/ticks.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]37#include <common/time.h>
38#include <common/uri_auth.h>
39#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]40
41#include <types/capture.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]42#include <types/filters.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]43#include <types/global.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]44
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]45#include <proto/acl.h>
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]46#include <proto/action.h>
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]47#include <proto/arg.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]48#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]49#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]50#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]51#include <proto/checks.h>
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]52#include <proto/compression.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]53#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]54#include <proto/fd.h>
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]55#include <proto/filters.h>
Willy Tarreau03fa5df2010-05-24 21:02:37 +0200[diff] [blame]56#include <proto/frontend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]57#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]58#include <proto/hdr_idx.h>
Thierry FOURNIERed66c292013-11-28 11:05:19 +0100[diff] [blame]59#include <proto/pattern.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]60#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]61#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]62#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]63#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]64#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]65#include <proto/server.h>
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]66#include <proto/stream.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]67#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]68#include <proto/task.h>
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]69#include <proto/pattern.h>
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]70#include <proto/vars.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]71
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]72const char HTTP_100[] =
73 "HTTP/1.1 100 Continue\r\n\r\n";
74
75const struct chunk http_100_chunk = {
76 .str = (char *)&HTTP_100,
77 .len = sizeof(HTTP_100)-1
78};
79
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]80/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]81const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]82 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]83 "Content-length: 0\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]84 "Location: "; /* not terminated since it will be concatenated with the URL */
85
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]86const char *HTTP_302 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]87 "HTTP/1.1 302 Found\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]88 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]89 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]90 "Location: "; /* not terminated since it will be concatenated with the URL */
91
92/* same as 302 except that the browser MUST retry with the GET method */
93const char *HTTP_303 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]94 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]95 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]96 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]97 "Location: "; /* not terminated since it will be concatenated with the URL */
98
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]99
100/* same as 302 except that the browser MUST retry with the same method */
101const char *HTTP_307 =
102 "HTTP/1.1 307 Temporary Redirect\r\n"
103 "Cache-Control: no-cache\r\n"
104 "Content-length: 0\r\n"
105 "Location: "; /* not terminated since it will be concatenated with the URL */
106
107/* same as 301 except that the browser MUST retry with the same method */
108const char *HTTP_308 =
109 "HTTP/1.1 308 Permanent Redirect\r\n"
110 "Content-length: 0\r\n"
111 "Location: "; /* not terminated since it will be concatenated with the URL */
112
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]113/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
114const char *HTTP_401_fmt =
115 "HTTP/1.0 401 Unauthorized\r\n"
116 "Cache-Control: no-cache\r\n"
117 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]118 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]119 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
120 "\r\n"
121 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
122
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]123const char *HTTP_407_fmt =
124 "HTTP/1.0 407 Unauthorized\r\n"
125 "Cache-Control: no-cache\r\n"
126 "Connection: close\r\n"
127 "Content-Type: text/html\r\n"
128 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
129 "\r\n"
Godbach1f1fae62014-12-17 16:32:05 +0800[diff] [blame]130 "<html><body><h1>407 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]131
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]132
133const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]134 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]135 [HTTP_ERR_400] = 400,
136 [HTTP_ERR_403] = 403,
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]137 [HTTP_ERR_405] = 405,
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]138 [HTTP_ERR_408] = 408,
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]139 [HTTP_ERR_429] = 429,
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]140 [HTTP_ERR_500] = 500,
141 [HTTP_ERR_502] = 502,
142 [HTTP_ERR_503] = 503,
143 [HTTP_ERR_504] = 504,
144};
145
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]146static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]147 [HTTP_ERR_200] =
148 "HTTP/1.0 200 OK\r\n"
149 "Cache-Control: no-cache\r\n"
150 "Connection: close\r\n"
151 "Content-Type: text/html\r\n"
152 "\r\n"
153 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
154
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]155 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]156 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]157 "Cache-Control: no-cache\r\n"
158 "Connection: close\r\n"
159 "Content-Type: text/html\r\n"
160 "\r\n"
161 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
162
163 [HTTP_ERR_403] =
164 "HTTP/1.0 403 Forbidden\r\n"
165 "Cache-Control: no-cache\r\n"
166 "Connection: close\r\n"
167 "Content-Type: text/html\r\n"
168 "\r\n"
169 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
170
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]171 [HTTP_ERR_405] =
172 "HTTP/1.0 405 Method Not Allowed\r\n"
173 "Cache-Control: no-cache\r\n"
174 "Connection: close\r\n"
175 "Content-Type: text/html\r\n"
176 "\r\n"
177 "<html><body><h1>405 Method Not Allowed</h1>\nA request was made of a resource using a request method not supported by that resource\n</body></html>\n",
178
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]179 [HTTP_ERR_408] =
180 "HTTP/1.0 408 Request Time-out\r\n"
181 "Cache-Control: no-cache\r\n"
182 "Connection: close\r\n"
183 "Content-Type: text/html\r\n"
184 "\r\n"
185 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
186
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]187 [HTTP_ERR_429] =
188 "HTTP/1.0 429 Too Many Requests\r\n"
189 "Cache-Control: no-cache\r\n"
190 "Connection: close\r\n"
191 "Content-Type: text/html\r\n"
192 "\r\n"
193 "<html><body><h1>429 Too Many Requests</h1>\nYou have sent too many requests in a given amount of time.\n</body></html>\n",
194
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]195 [HTTP_ERR_500] =
196 "HTTP/1.0 500 Server Error\r\n"
197 "Cache-Control: no-cache\r\n"
198 "Connection: close\r\n"
199 "Content-Type: text/html\r\n"
200 "\r\n"
201 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
202
203 [HTTP_ERR_502] =
204 "HTTP/1.0 502 Bad Gateway\r\n"
205 "Cache-Control: no-cache\r\n"
206 "Connection: close\r\n"
207 "Content-Type: text/html\r\n"
208 "\r\n"
209 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
210
211 [HTTP_ERR_503] =
212 "HTTP/1.0 503 Service Unavailable\r\n"
213 "Cache-Control: no-cache\r\n"
214 "Connection: close\r\n"
215 "Content-Type: text/html\r\n"
216 "\r\n"
217 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
218
219 [HTTP_ERR_504] =
220 "HTTP/1.0 504 Gateway Time-out\r\n"
221 "Cache-Control: no-cache\r\n"
222 "Connection: close\r\n"
223 "Content-Type: text/html\r\n"
224 "\r\n"
225 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
226
227};
228
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]229/* status codes available for the stats admin page (strictly 4 chars length) */
230const char *stat_status_codes[STAT_STATUS_SIZE] = {
231 [STAT_STATUS_DENY] = "DENY",
232 [STAT_STATUS_DONE] = "DONE",
233 [STAT_STATUS_ERRP] = "ERRP",
234 [STAT_STATUS_EXCD] = "EXCD",
235 [STAT_STATUS_NONE] = "NONE",
236 [STAT_STATUS_PART] = "PART",
237 [STAT_STATUS_UNKN] = "UNKN",
238};
239
240
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]241/* List head of all known action keywords for "http-request" */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]242struct action_kw_list http_req_keywords = {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]243 .list = LIST_HEAD_INIT(http_req_keywords.list)
244};
245
246/* List head of all known action keywords for "http-response" */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]247struct action_kw_list http_res_keywords = {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]248 .list = LIST_HEAD_INIT(http_res_keywords.list)
249};
250
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]251/* We must put the messages here since GCC cannot initialize consts depending
252 * on strlen().
253 */
254struct chunk http_err_chunks[HTTP_ERR_SIZE];
255
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]256/* this struct is used between calls to smp_fetch_hdr() or smp_fetch_cookie() */
257static struct hdr_ctx static_hdr_ctx;
258
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]259#define FD_SETS_ARE_BITFIELDS
260#ifdef FD_SETS_ARE_BITFIELDS
261/*
262 * This map is used with all the FD_* macros to check whether a particular bit
263 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
264 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
265 * byte should be encoded. Be careful to always pass bytes from 0 to 255
266 * exclusively to the macros.
267 */
268fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
269fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]270fd_set http_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]271
272#else
273#error "Check if your OS uses bitfields for fd_sets"
274#endif
275
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]276static int http_apply_redirect_rule(struct redirect_rule *rule, struct stream *s, struct http_txn *txn);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]277
David Carlier7365f7d2016-04-04 11:54:42 +0100[diff] [blame]278static inline int http_msg_forward_body(struct stream *s, struct http_msg *msg);
279static inline int http_msg_forward_chunked_body(struct stream *s, struct http_msg *msg);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]280
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]281/* This function returns a reason associated with the HTTP status.
282 * This function never fails, a message is always returned.
283 */
284const char *get_reason(unsigned int status)
285{
286 switch (status) {
287 case 100: return "Continue";
288 case 101: return "Switching Protocols";
289 case 102: return "Processing";
290 case 200: return "OK";
291 case 201: return "Created";
292 case 202: return "Accepted";
293 case 203: return "Non-Authoritative Information";
294 case 204: return "No Content";
295 case 205: return "Reset Content";
296 case 206: return "Partial Content";
297 case 207: return "Multi-Status";
298 case 210: return "Content Different";
299 case 226: return "IM Used";
300 case 300: return "Multiple Choices";
301 case 301: return "Moved Permanently";
302 case 302: return "Moved Temporarily";
303 case 303: return "See Other";
304 case 304: return "Not Modified";
305 case 305: return "Use Proxy";
306 case 307: return "Temporary Redirect";
307 case 308: return "Permanent Redirect";
308 case 310: return "Too many Redirects";
309 case 400: return "Bad Request";
310 case 401: return "Unauthorized";
311 case 402: return "Payment Required";
312 case 403: return "Forbidden";
313 case 404: return "Not Found";
314 case 405: return "Method Not Allowed";
315 case 406: return "Not Acceptable";
316 case 407: return "Proxy Authentication Required";
317 case 408: return "Request Time-out";
318 case 409: return "Conflict";
319 case 410: return "Gone";
320 case 411: return "Length Required";
321 case 412: return "Precondition Failed";
322 case 413: return "Request Entity Too Large";
323 case 414: return "Request-URI Too Long";
324 case 415: return "Unsupported Media Type";
325 case 416: return "Requested range unsatisfiable";
326 case 417: return "Expectation failed";
327 case 418: return "I'm a teapot";
328 case 422: return "Unprocessable entity";
329 case 423: return "Locked";
330 case 424: return "Method failure";
331 case 425: return "Unordered Collection";
332 case 426: return "Upgrade Required";
333 case 428: return "Precondition Required";
334 case 429: return "Too Many Requests";
335 case 431: return "Request Header Fields Too Large";
336 case 449: return "Retry With";
337 case 450: return "Blocked by Windows Parental Controls";
338 case 451: return "Unavailable For Legal Reasons";
339 case 456: return "Unrecoverable Error";
340 case 499: return "client has closed connection";
341 case 500: return "Internal Server Error";
342 case 501: return "Not Implemented";
343 case 502: return "Bad Gateway ou Proxy Error";
344 case 503: return "Service Unavailable";
345 case 504: return "Gateway Time-out";
346 case 505: return "HTTP Version not supported";
347 case 506: return "Variant also negociate";
348 case 507: return "Insufficient storage";
349 case 508: return "Loop detected";
350 case 509: return "Bandwidth Limit Exceeded";
351 case 510: return "Not extended";
352 case 511: return "Network authentication required";
353 case 520: return "Web server is returning an unknown error";
354 default:
355 switch (status) {
356 case 100 ... 199: return "Informational";
357 case 200 ... 299: return "Success";
358 case 300 ... 399: return "Redirection";
359 case 400 ... 499: return "Client Error";
360 case 500 ... 599: return "Server Error";
361 default: return "Other";
362 }
363 }
364}
365
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]366void init_proto_http()
367{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]368 int i;
369 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]370 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]371
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]372 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
373 if (!http_err_msgs[msg]) {
374 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
375 abort();
376 }
377
378 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
379 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
380 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]381
382 /* initialize the log header encoding map : '{|}"#' should be encoded with
383 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
384 * URL encoding only requires '"', '#' to be encoded as well as non-
385 * printable characters above.
386 */
387 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
388 memset(url_encode_map, 0, sizeof(url_encode_map));
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]389 memset(http_encode_map, 0, sizeof(url_encode_map));
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]390 for (i = 0; i < 32; i++) {
391 FD_SET(i, hdr_encode_map);
392 FD_SET(i, url_encode_map);
393 }
394 for (i = 127; i < 256; i++) {
395 FD_SET(i, hdr_encode_map);
396 FD_SET(i, url_encode_map);
397 }
398
399 tmp = "\"#{|}";
400 while (*tmp) {
401 FD_SET(*tmp, hdr_encode_map);
402 tmp++;
403 }
404
405 tmp = "\"#";
406 while (*tmp) {
407 FD_SET(*tmp, url_encode_map);
408 tmp++;
409 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]410
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]411 /* initialize the http header encoding map. The draft httpbis define the
412 * header content as:
413 *
414 * HTTP-message = start-line
415 * *( header-field CRLF )
416 * CRLF
417 * [ message-body ]
418 * header-field = field-name ":" OWS field-value OWS
419 * field-value = *( field-content / obs-fold )
420 * field-content = field-vchar [ 1*( SP / HTAB ) field-vchar ]
421 * obs-fold = CRLF 1*( SP / HTAB )
422 * field-vchar = VCHAR / obs-text
423 * VCHAR = %x21-7E
424 * obs-text = %x80-FF
425 *
426 * All the chars are encoded except "VCHAR", "obs-text", SP and HTAB.
427 * The encoded chars are form 0x00 to 0x08, 0x0a to 0x1f and 0x7f. The
428 * "obs-fold" is volontary forgotten because haproxy remove this.
429 */
430 memset(http_encode_map, 0, sizeof(http_encode_map));
431 for (i = 0x00; i <= 0x08; i++)
432 FD_SET(i, http_encode_map);
433 for (i = 0x0a; i <= 0x1f; i++)
434 FD_SET(i, http_encode_map);
435 FD_SET(0x7f, http_encode_map);
436
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]437 /* memory allocations */
Willy Tarreau63986c72015-04-03 22:55:33 +0200[diff] [blame]438 pool2_http_txn = create_pool("http_txn", sizeof(struct http_txn), MEM_F_SHARED);
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]439 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]440 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]441}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]442
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]443/*
444 * We have 26 list of methods (1 per first letter), each of which can have
445 * up to 3 entries (2 valid, 1 null).
446 */
447struct http_method_desc {
Willy Tarreauc8987b32013-12-06 23:43:17 +0100[diff] [blame]448 enum http_meth_t meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]449 int len;
450 const char text[8];
451};
452
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]453const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]454 ['C' - 'A'] = {
455 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
456 },
457 ['D' - 'A'] = {
458 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
459 },
460 ['G' - 'A'] = {
461 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
462 },
463 ['H' - 'A'] = {
464 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
465 },
Christopher Fauletd57ad642015-07-31 14:26:57 +0200[diff] [blame]466 ['O' - 'A'] = {
467 [0] = { .meth = HTTP_METH_OPTIONS , .len=7, .text="OPTIONS" },
468 },
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]469 ['P' - 'A'] = {
470 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
471 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
472 },
473 ['T' - 'A'] = {
474 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
475 },
476 /* rest is empty like this :
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]477 * [0] = { .meth = HTTP_METH_OTHER , .len=0, .text="" },
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]478 */
479};
480
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]481const struct http_method_name http_known_methods[HTTP_METH_OTHER] = {
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]482 [HTTP_METH_OPTIONS] = { "OPTIONS", 7 },
483 [HTTP_METH_GET] = { "GET", 3 },
484 [HTTP_METH_HEAD] = { "HEAD", 4 },
485 [HTTP_METH_POST] = { "POST", 4 },
486 [HTTP_METH_PUT] = { "PUT", 3 },
487 [HTTP_METH_DELETE] = { "DELETE", 6 },
488 [HTTP_METH_TRACE] = { "TRACE", 5 },
489 [HTTP_METH_CONNECT] = { "CONNECT", 7 },
490};
491
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]492/* It is about twice as fast on recent architectures to lookup a byte in a
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]493 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]494 * RFC2616 for those chars.
495 */
496
497const char http_is_spht[256] = {
498 [' '] = 1, ['\t'] = 1,
499};
500
501const char http_is_crlf[256] = {
502 ['\r'] = 1, ['\n'] = 1,
503};
504
505const char http_is_lws[256] = {
506 [' '] = 1, ['\t'] = 1,
507 ['\r'] = 1, ['\n'] = 1,
508};
509
510const char http_is_sep[256] = {
511 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
512 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
513 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
514 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
515 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
516};
517
518const char http_is_ctl[256] = {
519 [0 ... 31] = 1,
520 [127] = 1,
521};
522
523/*
524 * A token is any ASCII char that is neither a separator nor a CTL char.
525 * Do not overwrite values in assignment since gcc-2.95 will not handle
526 * them correctly. Instead, define every non-CTL char's status.
527 */
528const char http_is_token[256] = {
529 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
530 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
531 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
532 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
533 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
534 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
535 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
536 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
537 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
538 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
539 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
540 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
541 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
542 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
543 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
544 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
545 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
546 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
547 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
548 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
549 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
550 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
551 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
552 ['|'] = 1, ['}'] = 0, ['~'] = 1,
553};
554
555
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]556/*
557 * An http ver_token is any ASCII which can be found in an HTTP version,
558 * which includes 'H', 'T', 'P', '/', '.' and any digit.
559 */
560const char http_is_ver_token[256] = {
561 ['.'] = 1, ['/'] = 1,
562 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
563 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
Thierry FOURNIER63d692c2015-02-28 19:03:56 +0100[diff] [blame]564 ['H'] = 1, ['P'] = 1, ['R'] = 1, ['S'] = 1, ['T'] = 1,
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]565};
566
567
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]568/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]569 * Adds a header and its CRLF at the tail of the message's buffer, just before
570 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]571 * The header is also automatically added to the index <hdr_idx>, and the end
572 * of headers is automatically adjusted. The number of bytes added is returned
573 * on success, otherwise <0 is returned indicating an error.
574 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]575int http_header_add_tail(struct http_msg *msg, struct hdr_idx *hdr_idx, const char *text)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]576{
577 int bytes, len;
578
579 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]580 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]581 if (!bytes)
582 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]583 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]584 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
585}
586
587/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]588 * Adds a header and its CRLF at the tail of the message's buffer, just before
589 * the last CRLF. <len> bytes are copied, not counting the CRLF. If <text> is NULL, then
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]590 * the buffer is only opened and the space reserved, but nothing is copied.
591 * The header is also automatically added to the index <hdr_idx>, and the end
592 * of headers is automatically adjusted. The number of bytes added is returned
593 * on success, otherwise <0 is returned indicating an error.
594 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]595int http_header_add_tail2(struct http_msg *msg,
596 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]597{
598 int bytes;
599
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]600 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]601 if (!bytes)
602 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]603 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]604 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
605}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]606
607/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]608 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
609 * If so, returns the position of the first non-space character relative to
610 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
611 * to return a pointer to the place after the first space. Returns 0 if the
612 * header name does not match. Checks are case-insensitive.
613 */
614int http_header_match2(const char *hdr, const char *end,
615 const char *name, int len)
616{
617 const char *val;
618
619 if (hdr + len >= end)
620 return 0;
621 if (hdr[len] != ':')
622 return 0;
623 if (strncasecmp(hdr, name, len) != 0)
624 return 0;
625 val = hdr + len + 1;
626 while (val < end && HTTP_IS_SPHT(*val))
627 val++;
628 if ((val >= end) && (len + 2 <= end - hdr))
629 return len + 2; /* we may replace starting from second space */
630 return val - hdr;
631}
632
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]633/* Find the first or next occurrence of header <name> in message buffer <sol>
634 * using headers index <idx>, and return it in the <ctx> structure. This
635 * structure holds everything necessary to use the header and find next
636 * occurrence. If its <idx> member is 0, the header is searched from the
637 * beginning. Otherwise, the next occurrence is returned. The function returns
638 * 1 when it finds a value, and 0 when there is no more. It is very similar to
639 * http_find_header2() except that it is designed to work with full-line headers
640 * whose comma is not a delimiter but is part of the syntax. As a special case,
641 * if ctx->val is NULL when searching for a new values of a header, the current
642 * header is rescanned. This allows rescanning after a header deletion.
643 */
644int http_find_full_header2(const char *name, int len,
645 char *sol, struct hdr_idx *idx,
646 struct hdr_ctx *ctx)
647{
648 char *eol, *sov;
649 int cur_idx, old_idx;
650
651 cur_idx = ctx->idx;
652 if (cur_idx) {
653 /* We have previously returned a header, let's search another one */
654 sol = ctx->line;
655 eol = sol + idx->v[cur_idx].len;
656 goto next_hdr;
657 }
658
659 /* first request for this header */
660 sol += hdr_idx_first_pos(idx);
661 old_idx = 0;
662 cur_idx = hdr_idx_first_idx(idx);
663 while (cur_idx) {
664 eol = sol + idx->v[cur_idx].len;
665
666 if (len == 0) {
667 /* No argument was passed, we want any header.
668 * To achieve this, we simply build a fake request. */
669 while (sol + len < eol && sol[len] != ':')
670 len++;
671 name = sol;
672 }
673
674 if ((len < eol - sol) &&
675 (sol[len] == ':') &&
676 (strncasecmp(sol, name, len) == 0)) {
677 ctx->del = len;
678 sov = sol + len + 1;
679 while (sov < eol && http_is_lws[(unsigned char)*sov])
680 sov++;
681
682 ctx->line = sol;
683 ctx->prev = old_idx;
684 ctx->idx = cur_idx;
685 ctx->val = sov - sol;
686 ctx->tws = 0;
687 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
688 eol--;
689 ctx->tws++;
690 }
691 ctx->vlen = eol - sov;
692 return 1;
693 }
694 next_hdr:
695 sol = eol + idx->v[cur_idx].cr + 1;
696 old_idx = cur_idx;
697 cur_idx = idx->v[cur_idx].next;
698 }
699 return 0;
700}
701
Willy Tarreauc90dc232015-02-20 13:51:36 +0100[diff] [blame]702/* Find the first or next header field in message buffer <sol> using headers
703 * index <idx>, and return it in the <ctx> structure. This structure holds
704 * everything necessary to use the header and find next occurrence. If its
705 * <idx> member is 0, the first header is retrieved. Otherwise, the next
706 * occurrence is returned. The function returns 1 when it finds a value, and
707 * 0 when there is no more. It is equivalent to http_find_full_header2() with
708 * no header name.
709 */
710int http_find_next_header(char *sol, struct hdr_idx *idx, struct hdr_ctx *ctx)
711{
712 char *eol, *sov;
713 int cur_idx, old_idx;
714 int len;
715
716 cur_idx = ctx->idx;
717 if (cur_idx) {
718 /* We have previously returned a header, let's search another one */
719 sol = ctx->line;
720 eol = sol + idx->v[cur_idx].len;
721 goto next_hdr;
722 }
723
724 /* first request for this header */
725 sol += hdr_idx_first_pos(idx);
726 old_idx = 0;
727 cur_idx = hdr_idx_first_idx(idx);
728 while (cur_idx) {
729 eol = sol + idx->v[cur_idx].len;
730
731 len = 0;
732 while (1) {
733 if (len >= eol - sol)
734 goto next_hdr;
735 if (sol[len] == ':')
736 break;
737 len++;
738 }
739
740 ctx->del = len;
741 sov = sol + len + 1;
742 while (sov < eol && http_is_lws[(unsigned char)*sov])
743 sov++;
744
745 ctx->line = sol;
746 ctx->prev = old_idx;
747 ctx->idx = cur_idx;
748 ctx->val = sov - sol;
749 ctx->tws = 0;
750
751 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
752 eol--;
753 ctx->tws++;
754 }
755 ctx->vlen = eol - sov;
756 return 1;
757
758 next_hdr:
759 sol = eol + idx->v[cur_idx].cr + 1;
760 old_idx = cur_idx;
761 cur_idx = idx->v[cur_idx].next;
762 }
763 return 0;
764}
765
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]766/* Find the end of the header value contained between <s> and <e>. See RFC2616,
767 * par 2.2 for more information. Note that it requires a valid header to return
768 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]769 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]770char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]771{
772 int quoted, qdpair;
773
774 quoted = qdpair = 0;
775 for (; s < e; s++) {
776 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]777 else if (quoted) {
778 if (*s == '\\') qdpair = 1;
779 else if (*s == '"') quoted = 0;
780 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]781 else if (*s == '"') quoted = 1;
782 else if (*s == ',') return s;
783 }
784 return s;
785}
786
787/* Find the first or next occurrence of header <name> in message buffer <sol>
788 * using headers index <idx>, and return it in the <ctx> structure. This
789 * structure holds everything necessary to use the header and find next
790 * occurrence. If its <idx> member is 0, the header is searched from the
791 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]792 * 1 when it finds a value, and 0 when there is no more. It is designed to work
793 * with headers defined as comma-separated lists. As a special case, if ctx->val
794 * is NULL when searching for a new values of a header, the current header is
795 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]796 */
797int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]798 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]799 struct hdr_ctx *ctx)
800{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]801 char *eol, *sov;
802 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]803
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]804 cur_idx = ctx->idx;
805 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]806 /* We have previously returned a value, let's search
807 * another one on the same line.
808 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]809 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]810 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]811 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]812 eol = sol + idx->v[cur_idx].len;
813
814 if (sov >= eol)
815 /* no more values in this header */
816 goto next_hdr;
817
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]818 /* values remaining for this header, skip the comma but save it
819 * for later use (eg: for header deletion).
820 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]821 sov++;
822 while (sov < eol && http_is_lws[(unsigned char)*sov])
823 sov++;
824
825 goto return_hdr;
826 }
827
828 /* first request for this header */
829 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]830 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]831 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]832 while (cur_idx) {
833 eol = sol + idx->v[cur_idx].len;
834
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]835 if (len == 0) {
836 /* No argument was passed, we want any header.
837 * To achieve this, we simply build a fake request. */
838 while (sol + len < eol && sol[len] != ':')
839 len++;
840 name = sol;
841 }
842
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]843 if ((len < eol - sol) &&
844 (sol[len] == ':') &&
845 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]846 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]847 sov = sol + len + 1;
848 while (sov < eol && http_is_lws[(unsigned char)*sov])
849 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]850
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]851 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]852 ctx->prev = old_idx;
853 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]854 ctx->idx = cur_idx;
855 ctx->val = sov - sol;
856
857 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]858 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]859 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]860 eol--;
861 ctx->tws++;
862 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]863 ctx->vlen = eol - sov;
864 return 1;
865 }
866 next_hdr:
867 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]868 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]869 cur_idx = idx->v[cur_idx].next;
870 }
871 return 0;
872}
873
874int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]875 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]876 struct hdr_ctx *ctx)
877{
878 return http_find_header2(name, strlen(name), sol, idx, ctx);
879}
880
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]881/* Remove one value of a header. This only works on a <ctx> returned by one of
882 * the http_find_header functions. The value is removed, as well as surrounding
883 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]884 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]885 * message <msg>. The new index is returned. If it is zero, it means there is
886 * no more header, so any processing may stop. The ctx is always left in a form
887 * that can be handled by http_find_header2() to find next occurrence.
888 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]889int http_remove_header2(struct http_msg *msg, struct hdr_idx *idx, struct hdr_ctx *ctx)
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]890{
891 int cur_idx = ctx->idx;
892 char *sol = ctx->line;
893 struct hdr_idx_elem *hdr;
894 int delta, skip_comma;
895
896 if (!cur_idx)
897 return 0;
898
899 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]900 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]901 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]902 delta = buffer_replace2(msg->chn->buf, sol, sol + hdr->len + hdr->cr + 1, NULL, 0);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]903 http_msg_move_end(msg, delta);
904 idx->used--;
905 hdr->len = 0; /* unused entry */
906 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]907 if (idx->tail == ctx->idx)
908 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]909 ctx->idx = ctx->prev; /* walk back to the end of previous header */
Willy Tarreau7c1c2172015-01-07 17:23:50 +0100[diff] [blame]910 ctx->line -= idx->v[ctx->idx].len + idx->v[ctx->idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]911 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]912 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]913 return ctx->idx;
914 }
915
916 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]917 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
918 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]919 */
920
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]921 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]922 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]923 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]924 NULL, 0);
925 hdr->len += delta;
926 http_msg_move_end(msg, delta);
927 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]928 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]929 return ctx->idx;
930}
931
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]932/* This function handles a server error at the stream interface level. The
933 * stream interface is assumed to be already in a closed state. An optional
934 * message is copied into the input buffer, and an HTTP status code stored.
935 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]936 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]937 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]938static void http_server_error(struct stream *s, struct stream_interface *si,
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]939 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]940{
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]941 FLT_STRM_CB(s, flt_http_reply(s, status, msg));
Willy Tarreau2bb4a962014-11-28 11:11:05 +0100[diff] [blame]942 channel_auto_read(si_oc(si));
943 channel_abort(si_oc(si));
944 channel_auto_close(si_oc(si));
945 channel_erase(si_oc(si));
946 channel_auto_close(si_ic(si));
947 channel_auto_read(si_ic(si));
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]948 if (status > 0 && msg) {
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]949 s->txn->status = status;
Willy Tarreau2bb4a962014-11-28 11:11:05 +0100[diff] [blame]950 bo_inject(si_ic(si), msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]951 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]952 if (!(s->flags & SF_ERR_MASK))
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]953 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]954 if (!(s->flags & SF_FINST_MASK))
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]955 s->flags |= finst;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]956}
957
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]958/* This function returns the appropriate error location for the given stream
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]959 * and message.
960 */
961
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]962struct chunk *http_error_message(struct stream *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]963{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]964 if (s->be->errmsg[msgnum].str)
965 return &s->be->errmsg[msgnum];
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]966 else if (strm_fe(s)->errmsg[msgnum].str)
967 return &strm_fe(s)->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]968 else
969 return &http_err_chunks[msgnum];
970}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]971
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]972void
973http_reply_and_close(struct stream *s, short status, struct chunk *msg)
974{
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]975 s->txn->flags &= ~TX_WAIT_NEXT_RQ;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]976 FLT_STRM_CB(s, flt_http_reply(s, status, msg));
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]977 stream_int_retnclose(&s->si[0], msg);
978}
979
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]980/*
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]981 * returns a known method among HTTP_METH_* or HTTP_METH_OTHER for all unknown
982 * ones.
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]983 */
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]984enum http_meth_t find_http_meth(const char *str, const int len)
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]985{
986 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]987 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]988
989 m = ((unsigned)*str - 'A');
990
991 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]992 for (h = http_methods[m]; h->len > 0; h++) {
993 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]994 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]995 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]996 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]997 };
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]998 }
Willy Tarreaub7ce4242015-09-03 17:15:21 +0200[diff] [blame]999 return HTTP_METH_OTHER;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]1000}
1001
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1002/* Parse the URI from the given transaction (which is assumed to be in request
1003 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
1004 * It is returned otherwise.
1005 */
Thierry FOURNIER3c331782015-09-17 19:33:35 +0200[diff] [blame]1006char *http_get_path(struct http_txn *txn)
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1007{
1008 char *ptr, *end;
1009
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1010 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]1011 end = ptr + txn->req.sl.rq.u_l;
1012
1013 if (ptr >= end)
1014 return NULL;
1015
1016 /* RFC2616, par. 5.1.2 :
1017 * Request-URI = "*" | absuri | abspath | authority
1018 */
1019
1020 if (*ptr == '*')
1021 return NULL;
1022
1023 if (isalpha((unsigned char)*ptr)) {
1024 /* this is a scheme as described by RFC3986, par. 3.1 */
1025 ptr++;
1026 while (ptr < end &&
1027 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
1028 ptr++;
1029 /* skip '://' */
1030 if (ptr == end || *ptr++ != ':')
1031 return NULL;
1032 if (ptr == end || *ptr++ != '/')
1033 return NULL;
1034 if (ptr == end || *ptr++ != '/')
1035 return NULL;
1036 }
1037 /* skip [user[:passwd]@]host[:[port]] */
1038
1039 while (ptr < end && *ptr != '/')
1040 ptr++;
1041
1042 if (ptr == end)
1043 return NULL;
1044
1045 /* OK, we got the '/' ! */
1046 return ptr;
1047}
1048
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]1049/* Parse the URI from the given string and look for the "/" beginning the PATH.
1050 * If not found, return NULL. It is returned otherwise.
1051 */
1052static char *
1053http_get_path_from_string(char *str)
1054{
1055 char *ptr = str;
1056
1057 /* RFC2616, par. 5.1.2 :
1058 * Request-URI = "*" | absuri | abspath | authority
1059 */
1060
1061 if (*ptr == '*')
1062 return NULL;
1063
1064 if (isalpha((unsigned char)*ptr)) {
1065 /* this is a scheme as described by RFC3986, par. 3.1 */
1066 ptr++;
1067 while (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.')
1068 ptr++;
1069 /* skip '://' */
1070 if (*ptr == '\0' || *ptr++ != ':')
1071 return NULL;
1072 if (*ptr == '\0' || *ptr++ != '/')
1073 return NULL;
1074 if (*ptr == '\0' || *ptr++ != '/')
1075 return NULL;
1076 }
1077 /* skip [user[:passwd]@]host[:[port]] */
1078
1079 while (*ptr != '\0' && *ptr != ' ' && *ptr != '/')
1080 ptr++;
1081
1082 if (*ptr == '\0' || *ptr == ' ')
1083 return NULL;
1084
1085 /* OK, we got the '/' ! */
1086 return ptr;
1087}
1088
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]1089/* Returns a 302 for a redirectable request that reaches a server working in
1090 * in redirect mode. This may only be called just after the stream interface
1091 * has moved to SI_ST_ASS. Unprocessable requests are left unchanged and will
1092 * follow normal proxy processing. NOTE: this function is designed to support
1093 * being called once data are scheduled for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1094 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1095void http_perform_server_redirect(struct stream *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1096{
1097 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1098 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1099 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1100 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1101
1102 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1103 trash.len = strlen(HTTP_302);
1104 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1105
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]1106 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1107
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1108 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1109 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1110 return;
1111
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]1112 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1113 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1114 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
1115 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]1116 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1117
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1118 /* 3: add the request URI. Since it was already forwarded, we need
1119 * to temporarily rewind the buffer.
1120 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1121 txn = s->txn;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1122 b_rew(s->req.buf, rewind = http_hdr_rewind(&txn->req));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1123
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1124 path = http_get_path(txn);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1125 len = buffer_count(s->req.buf, path, b_ptr(s->req.buf, txn->req.sl.rq.u + txn->req.sl.rq.u_l));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1126
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1127 b_adv(s->req.buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1128
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1129 if (!path)
1130 return;
1131
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1132 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1133 return;
1134
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1135 memcpy(trash.str + trash.len, path, len);
1136 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1137
1138 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1139 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
1140 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1141 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1142 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
1143 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1144 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1145
1146 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]1147 si_shutr(si);
1148 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1149 si->err_type = SI_ET_NONE;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1150 si->state = SI_ST_CLO;
1151
1152 /* send the message */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1153 http_server_error(s, si, SF_ERR_LOCAL, SF_FINST_C, 302, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1154
1155 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau4521ba62013-01-24 01:25:25 +0100[diff] [blame]1156 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500[diff] [blame]1157 srv_set_sess_last(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1158}
1159
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]1160/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1161 * that the server side is closed. Note that err_type is actually a
1162 * bitmask, where almost only aborts may be cumulated with other
1163 * values. We consider that aborted operations are more important
1164 * than timeouts or errors due to the fact that nobody else in the
1165 * logs might explain incomplete retries. All others should avoid
1166 * being cumulated. It should normally not be possible to have multiple
1167 * aborts at once, but just in case, the first one in sequence is reported.
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1168 * Note that connection errors appearing on the second request of a keep-alive
1169 * connection are not reported since this allows the client to retry.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1170 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1171void http_return_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1172{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]1173 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1174
1175 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1176 http_server_error(s, si, SF_ERR_CLICL, SF_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1177 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1178 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1179 http_server_error(s, si, SF_ERR_CLICL, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1180 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1181 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1182 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1183 http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1184 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1185 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1186 http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1187 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1188 else if (err_type & SI_ET_CONN_TO)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1189 http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1190 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1191 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1192 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1193 http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_C,
1194 503, (s->flags & SF_SRV_REUSED) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1195 http_error_message(s, HTTP_ERR_503));
Willy Tarreau2d400bb2012-05-14 12:11:47 +0200[diff] [blame]1196 else if (err_type & SI_ET_CONN_RES)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1197 http_server_error(s, si, SF_ERR_RESOURCE, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1198 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1199 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1200 else /* SI_ET_CONN_OTHER and others */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1201 http_server_error(s, si, SF_ERR_INTERNAL, SF_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1202 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1203}
1204
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1205extern const char sess_term_cond[8];
1206extern const char sess_fin_state[8];
1207extern const char *monthname[12];
Willy Tarreau63986c72015-04-03 22:55:33 +0200[diff] [blame]1208struct pool_head *pool2_http_txn;
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]1209struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]1210struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]1211struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1212
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1213/*
1214 * Capture headers from message starting at <som> according to header list
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1215 * <cap_hdr>, and fill the <cap> pointers appropriately.
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1216 */
1217void capture_headers(char *som, struct hdr_idx *idx,
1218 char **cap, struct cap_hdr *cap_hdr)
1219{
1220 char *eol, *sol, *col, *sov;
1221 int cur_idx;
1222 struct cap_hdr *h;
1223 int len;
1224
1225 sol = som + hdr_idx_first_pos(idx);
1226 cur_idx = hdr_idx_first_idx(idx);
1227
1228 while (cur_idx) {
1229 eol = sol + idx->v[cur_idx].len;
1230
1231 col = sol;
1232 while (col < eol && *col != ':')
1233 col++;
1234
1235 sov = col + 1;
1236 while (sov < eol && http_is_lws[(unsigned char)*sov])
1237 sov++;
1238
1239 for (h = cap_hdr; h; h = h->next) {
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1240 if (h->namelen && (h->namelen == col - sol) &&
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1241 (strncasecmp(sol, h->name, h->namelen) == 0)) {
1242 if (cap[h->index] == NULL)
1243 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]1244 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1245
1246 if (cap[h->index] == NULL) {
1247 Alert("HTTP capture : out of memory.\n");
1248 continue;
1249 }
1250
1251 len = eol - sov;
1252 if (len > h->len)
1253 len = h->len;
1254
1255 memcpy(cap[h->index], sov, len);
1256 cap[h->index][len]=0;
1257 }
1258 }
1259 sol = eol + idx->v[cur_idx].cr + 1;
1260 cur_idx = idx->v[cur_idx].next;
1261 }
1262}
1263
1264
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1265/* either we find an LF at <ptr> or we jump to <bad>.
1266 */
1267#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
1268
1269/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
1270 * otherwise to <http_msg_ood> with <state> set to <st>.
1271 */
1272#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
1273 ptr++; \
1274 if (likely(ptr < end)) \
1275 goto good; \
1276 else { \
1277 state = (st); \
1278 goto http_msg_ood; \
1279 } \
1280 } while (0)
1281
1282
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1283/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1284 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1285 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
1286 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
1287 * will give undefined results.
1288 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1289 * and that msg->sol points to the beginning of the response.
1290 * If a complete line is found (which implies that at least one CR or LF is
1291 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1292 * returned indicating an incomplete line (which does not mean that parts have
1293 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1294 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1295 * upon next call.
1296 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1297 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1298 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1299 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1300 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1301 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1302const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1303 enum ht_state state, const char *ptr, const char *end,
1304 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1305{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1306 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1307
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1308 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1309 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1310 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1311 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1312 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
1313
1314 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1315 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1316 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1317 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1318 state = HTTP_MSG_ERROR;
1319 break;
1320
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1321 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1322 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1323 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1324 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1325 goto http_msg_rpcode;
1326 }
1327 if (likely(HTTP_IS_SPHT(*ptr)))
1328 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1329 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1330 state = HTTP_MSG_ERROR;
1331 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1332
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1333 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1334 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1335 if (likely(!HTTP_IS_LWS(*ptr)))
1336 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
1337
1338 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1339 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1340 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1341 }
1342
1343 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1344 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1345 http_msg_rsp_reason:
1346 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1347 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1348 msg->sl.st.r_l = 0;
1349 goto http_msg_rpline_eol;
1350
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1351 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1352 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1353 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1354 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1355 goto http_msg_rpreason;
1356 }
1357 if (likely(HTTP_IS_SPHT(*ptr)))
1358 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1359 /* so it's a CR/LF, so there is no reason phrase */
1360 goto http_msg_rsp_reason;
1361
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1362 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1363 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1364 if (likely(!HTTP_IS_CRLF(*ptr)))
1365 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1366 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1367 http_msg_rpline_eol:
1368 /* We have seen the end of line. Note that we do not
1369 * necessarily have the \n yet, but at least we know that we
1370 * have EITHER \r OR \n, otherwise the response would not be
1371 * complete. We can then record the response length and return
1372 * to the caller which will be able to register it.
1373 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1374 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1375 return ptr;
1376
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1377 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1378#ifdef DEBUG_FULL
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1379 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1380 exit(1);
1381#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1382 ;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1383 }
1384
1385 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1386 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1387 if (ret_state)
1388 *ret_state = state;
1389 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1390 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1391 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1392}
1393
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1394/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1395 * This function parses a request line between <ptr> and <end>, starting with
1396 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1397 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1398 * will give undefined results.
1399 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1400 * and that msg->sol points to the beginning of the request.
1401 * If a complete line is found (which implies that at least one CR or LF is
1402 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1403 * returned indicating an incomplete line (which does not mean that parts have
1404 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1405 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1406 * upon next call.
1407 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1408 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1409 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1410 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1411 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1412 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1413const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1414 enum ht_state state, const char *ptr, const char *end,
1415 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1416{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1417 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1418
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1419 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1420 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1421 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1422 if (likely(HTTP_IS_TOKEN(*ptr)))
1423 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1424
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1425 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1426 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1427 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1428 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1429
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1430 if (likely(HTTP_IS_CRLF(*ptr))) {
1431 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1432 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1433 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1434 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1435 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1436 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1437 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1438 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1439 msg->sl.rq.v_l = 0;
1440 goto http_msg_rqline_eol;
1441 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1442 state = HTTP_MSG_ERROR;
1443 break;
1444
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1445 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1446 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1447 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1448 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1449 goto http_msg_rquri;
1450 }
1451 if (likely(HTTP_IS_SPHT(*ptr)))
1452 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1453 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1454 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1455
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1456 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1457 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1458 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1459 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1460
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1461 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1462 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1463 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1464 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1465
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1466 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1467 /* non-ASCII chars are forbidden unless option
1468 * accept-invalid-http-request is enabled in the frontend.
1469 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1470 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1471 if (msg->err_pos < -1)
1472 goto invalid_char;
1473 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1474 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1475 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1476 }
1477
1478 if (likely(HTTP_IS_CRLF(*ptr))) {
1479 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1480 goto http_msg_req09_uri_e;
1481 }
1482
1483 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1484 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1485 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1486 state = HTTP_MSG_ERROR;
1487 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1488
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1489 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1490 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1491 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1492 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1493 goto http_msg_rqver;
1494 }
1495 if (likely(HTTP_IS_SPHT(*ptr)))
1496 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1497 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1498 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1499
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1500 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1501 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1502 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1503 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1504
1505 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1506 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1507 http_msg_rqline_eol:
1508 /* We have seen the end of line. Note that we do not
1509 * necessarily have the \n yet, but at least we know that we
1510 * have EITHER \r OR \n, otherwise the request would not be
1511 * complete. We can then record the request length and return
1512 * to the caller which will be able to register it.
1513 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1514 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1515 return ptr;
1516 }
1517
1518 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1519 state = HTTP_MSG_ERROR;
1520 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1521
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1522 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1523#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1524 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1525 exit(1);
1526#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1527 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1528 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1529
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1530 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1531 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1532 if (ret_state)
1533 *ret_state = state;
1534 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1535 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1536 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1537}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1538
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1539/*
1540 * Returns the data from Authorization header. Function may be called more
1541 * than once so data is stored in txn->auth_data. When no header is found
1542 * or auth method is unknown auth_method is set to HTTP_AUTH_WRONG to avoid
Thierry FOURNIER98d96952014-01-23 12:13:02 +0100[diff] [blame]1543 * searching again for something we are unable to find anyway. However, if
1544 * the result if valid, the cache is not reused because we would risk to
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1545 * have the credentials overwritten by another stream in parallel.
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1546 */
1547
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]1548/* This bufffer is initialized in the file 'src/haproxy.c'. This length is
1549 * set according to global.tune.bufsize.
1550 */
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1551char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1552
1553int
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1554get_http_auth(struct stream *s)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1555{
1556
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1557 struct http_txn *txn = s->txn;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1558 struct chunk auth_method;
1559 struct hdr_ctx ctx;
1560 char *h, *p;
1561 int len;
1562
1563#ifdef DEBUG_AUTH
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1564 printf("Auth for stream %p: %d\n", s, txn->auth.method);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1565#endif
1566
1567 if (txn->auth.method == HTTP_AUTH_WRONG)
1568 return 0;
1569
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1570 txn->auth.method = HTTP_AUTH_WRONG;
1571
1572 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1573
1574 if (txn->flags & TX_USE_PX_CONN) {
1575 h = "Proxy-Authorization";
1576 len = strlen(h);
1577 } else {
1578 h = "Authorization";
1579 len = strlen(h);
1580 }
1581
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1582 if (!http_find_header2(h, len, s->req.buf->p, &txn->hdr_idx, &ctx))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1583 return 0;
1584
1585 h = ctx.line + ctx.val;
1586
1587 p = memchr(h, ' ', ctx.vlen);
Willy Tarreau5c557d12016-03-13 08:17:02 +0100[diff] [blame]1588 len = p - h;
1589 if (!p || len <= 0)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1590 return 0;
1591
David Carlier7365f7d2016-04-04 11:54:42 +0100[diff] [blame]1592 if (chunk_initlen(&auth_method, h, 0, len) != 1)
1593 return 0;
1594
Willy Tarreau5c557d12016-03-13 08:17:02 +0100[diff] [blame]1595 chunk_initlen(&txn->auth.method_data, p + 1, 0, ctx.vlen - len - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1596
1597 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1598
1599 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1600 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1601
1602 if (len < 0)
1603 return 0;
1604
1605
1606 get_http_auth_buff[len] = '\0';
1607
1608 p = strchr(get_http_auth_buff, ':');
1609
1610 if (!p)
1611 return 0;
1612
1613 txn->auth.user = get_http_auth_buff;
1614 *p = '\0';
1615 txn->auth.pass = p+1;
1616
1617 txn->auth.method = HTTP_AUTH_BASIC;
1618 return 1;
1619 }
1620
1621 return 0;
1622}
1623
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1624
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1625/*
1626 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1627 * depending on the initial msg->msg_state. The caller is responsible for
1628 * ensuring that the message does not wrap. The function can be preempted
1629 * everywhere when data are missing and recalled at the exact same location
1630 * with no information loss. The message may even be realigned between two
1631 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1632 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1633 * fields. Note that msg->sol will be initialized after completing the first
1634 * state, so that none of the msg pointers has to be initialized prior to the
1635 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1636 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1637void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1638{
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1639 enum ht_state state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1640 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1641 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1642
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1643 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1644 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1645 ptr = buf->p + msg->next;
1646 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1647
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1648 if (unlikely(ptr >= end))
1649 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1650
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1651 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1652 /*
1653 * First, states that are specific to the response only.
1654 * We check them first so that request and headers are
1655 * closer to each other (accessed more often).
1656 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1657 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1658 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1659 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1660 /* we have a start of message, but we have to check
1661 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1662 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1663 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1664 if (unlikely(ptr != buf->p)) {
1665 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1666 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1667 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1668 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1669 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1670 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1671 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1672 hdr_idx_init(idx);
1673 state = HTTP_MSG_RPVER;
1674 goto http_msg_rpver;
1675 }
1676
1677 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1678 goto http_msg_invalid;
1679
1680 if (unlikely(*ptr == '\n'))
1681 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1682 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1683 /* stop here */
1684
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1685 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1686 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1687 EXPECT_LF_HERE(ptr, http_msg_invalid);
1688 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1689 /* stop here */
1690
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1691 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1692 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1693 case HTTP_MSG_RPVER_SP:
1694 case HTTP_MSG_RPCODE:
1695 case HTTP_MSG_RPCODE_SP:
1696 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1697 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1698 state, ptr, end,
1699 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1700 if (unlikely(!ptr))
1701 return;
1702
1703 /* we have a full response and we know that we have either a CR
1704 * or an LF at <ptr>.
1705 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1706 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1707
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1708 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1709 if (likely(*ptr == '\r'))
1710 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1711 goto http_msg_rpline_end;
1712
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1713 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1714 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1715 /* msg->sol must point to the first of CR or LF. */
1716 EXPECT_LF_HERE(ptr, http_msg_invalid);
1717 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1718 /* stop here */
1719
1720 /*
1721 * Second, states that are specific to the request only
1722 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1723 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1724 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1725 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1726 /* we have a start of message, but we have to check
1727 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1728 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1729 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1730 if (likely(ptr != buf->p)) {
1731 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1732 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1733 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1734 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1735 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1736 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1737 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1738 state = HTTP_MSG_RQMETH;
1739 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1740 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1741
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1742 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1743 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1744
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1745 if (unlikely(*ptr == '\n'))
1746 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1747 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1748 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1749
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1750 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1751 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1752 EXPECT_LF_HERE(ptr, http_msg_invalid);
1753 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1754 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1755
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1756 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1757 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1758 case HTTP_MSG_RQMETH_SP:
1759 case HTTP_MSG_RQURI:
1760 case HTTP_MSG_RQURI_SP:
1761 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1762 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1763 state, ptr, end,
1764 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1765 if (unlikely(!ptr))
1766 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1767
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1768 /* we have a full request and we know that we have either a CR
1769 * or an LF at <ptr>.
1770 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1771 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1772
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1773 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1774 if (likely(*ptr == '\r'))
1775 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1776 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1777
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1778 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1779 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1780 /* check for HTTP/0.9 request : no version information available.
1781 * msg->sol must point to the first of CR or LF.
1782 */
1783 if (unlikely(msg->sl.rq.v_l == 0))
1784 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1785
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1786 EXPECT_LF_HERE(ptr, http_msg_invalid);
1787 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1788 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1789
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1790 /*
1791 * Common states below
1792 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1793 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1794 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1795 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1796 if (likely(!HTTP_IS_CRLF(*ptr))) {
1797 goto http_msg_hdr_name;
1798 }
1799
1800 if (likely(*ptr == '\r'))
1801 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1802 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1803
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1804 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1805 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1806 /* assumes msg->sol points to the first char */
1807 if (likely(HTTP_IS_TOKEN(*ptr)))
1808 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1809
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1810 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1811 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1812
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1813 if (likely(msg->err_pos < -1) || *ptr == '\n')
1814 goto http_msg_invalid;
1815
1816 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1817 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1818
1819 /* and we still accept this non-token character */
1820 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1821
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1822 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1823 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1824 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1825 if (likely(HTTP_IS_SPHT(*ptr)))
1826 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1827
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1828 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1829 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1830
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1831 if (likely(!HTTP_IS_CRLF(*ptr))) {
1832 goto http_msg_hdr_val;
1833 }
1834
1835 if (likely(*ptr == '\r'))
1836 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1837 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1838
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1839 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1840 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1841 EXPECT_LF_HERE(ptr, http_msg_invalid);
1842 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lws, HTTP_MSG_HDR_L1_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1843
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1844 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1845 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1846 if (likely(HTTP_IS_SPHT(*ptr))) {
1847 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1848 for (; buf->p + msg->sov < ptr; msg->sov++)
1849 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1850 goto http_msg_hdr_l1_sp;
1851 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1852 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1853 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1854 goto http_msg_complete_header;
1855
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1856 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1857 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1858 /* assumes msg->sol points to the first char, and msg->sov
1859 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1860 */
1861 if (likely(!HTTP_IS_CRLF(*ptr)))
1862 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1863
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1864 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1865 /* Note: we could also copy eol into ->eoh so that we have the
1866 * real header end in case it ends with lots of LWS, but is this
1867 * really needed ?
1868 */
1869 if (likely(*ptr == '\r'))
1870 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1871 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1872
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1873 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1874 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1875 EXPECT_LF_HERE(ptr, http_msg_invalid);
1876 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lws, HTTP_MSG_HDR_L2_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1877
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1878 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1879 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1880 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1881 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1882 for (; buf->p + msg->eol < ptr; msg->eol++)
1883 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1884 goto http_msg_hdr_val;
1885 }
1886 http_msg_complete_header:
1887 /*
1888 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1889 * Assumes msg->sol points to the first char, msg->sov points
1890 * to the first character of the value and msg->eol to the
1891 * first CR or LF so we know how the line ends. We insert last
1892 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1893 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1894 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1895 idx, idx->tail) < 0))
1896 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1897
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1898 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1899 if (likely(!HTTP_IS_CRLF(*ptr))) {
1900 goto http_msg_hdr_name;
1901 }
1902
1903 if (likely(*ptr == '\r'))
1904 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1905 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1906
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1907 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1908 http_msg_last_lf:
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]1909 /* Assumes msg->sol points to the first of either CR or LF.
1910 * Sets ->sov and ->next to the total header length, ->eoh to
1911 * the last CRLF, and ->eol to the last CRLF length (1 or 2).
1912 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1913 EXPECT_LF_HERE(ptr, http_msg_invalid);
1914 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1915 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1916 msg->eoh = msg->sol;
1917 msg->sol = 0;
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]1918 msg->eol = msg->sov - msg->eoh;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1919 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1920 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1921
1922 case HTTP_MSG_ERROR:
1923 /* this may only happen if we call http_msg_analyser() twice with an error */
1924 break;
1925
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1926 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1927#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1928 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1929 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1930#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1931 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1932 }
1933 http_msg_ood:
1934 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1935 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1936 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1937 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1938
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1939 http_msg_invalid:
1940 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1941 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1942 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1943 return;
1944}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1945
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1946/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1947 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1948 * nothing is done and 1 is returned.
1949 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1950static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1951{
1952 int delta;
1953 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1954 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1955
1956 if (msg->sl.rq.v_l != 0)
1957 return 1;
1958
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]1959 /* RFC 1945 allows only GET for HTTP/0.9 requests */
1960 if (txn->meth != HTTP_METH_GET)
1961 return 0;
1962
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1963 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1964 delta = 0;
1965
1966 if (msg->sl.rq.u_l == 0) {
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]1967 /* HTTP/0.9 requests *must* have a request URI, per RFC 1945 */
1968 return 0;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1969 }
1970 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1971 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " HTTP/1.0\r\n", 11);
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1972 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1973 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1974 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1975 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1976 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1977 NULL, NULL);
1978 if (unlikely(!cur_end))
1979 return 0;
1980
1981 /* we have a full HTTP/1.0 request now and we know that
1982 * we have either a CR or an LF at <ptr>.
1983 */
1984 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1985 return 1;
1986}
1987
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1988/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1989 * and "keep-alive" values. If we already know that some headers may safely
1990 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1991 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1992 * - bit 1 means remove "keep-alive" headers (in HTTP/1.1 reqs/resp to 1.1).
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1993 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1994 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1995 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1996 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1997 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1998 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1999void http_parse_connection_header(struct http_txn *txn, struct http_msg *msg, int to_del)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2000{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2001 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2002 const char *hdr_val = "Connection";
2003 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2004
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2005 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2006 return;
2007
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2008 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2009 hdr_val = "Proxy-Connection";
2010 hdr_len = 16;
2011 }
2012
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2013 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2014 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2015 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2016 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
2017 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2018 if (to_del & 2)
2019 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2020 else
2021 txn->flags |= TX_CON_KAL_SET;
2022 }
2023 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
2024 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2025 if (to_del & 1)
2026 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2027 else
2028 txn->flags |= TX_CON_CLO_SET;
2029 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2030 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
2031 txn->flags |= TX_HDR_CONN_UPG;
2032 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2033 }
2034
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2035 txn->flags |= TX_HDR_CONN_PRS;
2036 return;
2037}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2038
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2039/* Apply desired changes on the Connection: header. Values may be removed and/or
2040 * added depending on the <wanted> flags, which are exclusively composed of
2041 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
2042 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
2043 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2044void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2045{
2046 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2047 const char *hdr_val = "Connection";
2048 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2049
2050 ctx.idx = 0;
2051
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2052
2053 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2054 hdr_val = "Proxy-Connection";
2055 hdr_len = 16;
2056 }
2057
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2058 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2059 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2060 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
2061 if (wanted & TX_CON_KAL_SET)
2062 txn->flags |= TX_CON_KAL_SET;
2063 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2064 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2065 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2066 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
2067 if (wanted & TX_CON_CLO_SET)
2068 txn->flags |= TX_CON_CLO_SET;
2069 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2070 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]2071 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2072 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2073
2074 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
2075 return;
2076
2077 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
2078 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2079 hdr_val = "Connection: close";
2080 hdr_len = 17;
2081 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2082 hdr_val = "Proxy-Connection: close";
2083 hdr_len = 23;
2084 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2085 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2086 }
2087
2088 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
2089 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2090 hdr_val = "Connection: keep-alive";
2091 hdr_len = 22;
2092 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
2093 hdr_val = "Proxy-Connection: keep-alive";
2094 hdr_len = 28;
2095 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]2096 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]2097 }
2098 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2099}
2100
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2101/* Parse the chunk size at msg->next. Once done, caller should adjust ->next to
2102 * point to the first byte of data after the chunk size, so that we know we can
2103 * forward exactly msg->next bytes. msg->sol contains the exact number of bytes
2104 * forming the chunk size. That way it is always possible to differentiate
2105 * between the start of the body and the start of the data. Return the number
2106 * of byte parsed on success, 0 when some data is missing, <0 on error. Note:
2107 * this function is designed to parse wrapped CRLF at the end of the buffer.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2108 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2109static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2110{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2111 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2112 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2113 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2114 const char *end = buf->data + buf->size;
2115 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2116 unsigned int chunk = 0;
2117
2118 /* The chunk size is in the following form, though we are only
2119 * interested in the size and CRLF :
2120 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
2121 */
2122 while (1) {
2123 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2124 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2125 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2126 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2127 if (c < 0) /* not a hex digit anymore */
2128 break;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2129 if (unlikely(++ptr >= end))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2130 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]2131 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2132 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2133 chunk = (chunk << 4) + c;
2134 }
2135
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2136 /* empty size not allowed */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2137 if (unlikely(ptr == ptr_old))
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2138 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2139
2140 while (http_is_spht[(unsigned char)*ptr]) {
2141 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2142 ptr = buf->data;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2143 if (unlikely(ptr == stop))
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2144 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2145 }
2146
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2147 /* Up to there, we know that at least one byte is present at *ptr. Check
2148 * for the end of chunk size.
2149 */
2150 while (1) {
2151 if (likely(HTTP_IS_CRLF(*ptr))) {
2152 /* we now have a CR or an LF at ptr */
2153 if (likely(*ptr == '\r')) {
2154 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2155 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2156 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2157 return 0;
2158 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2159
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2160 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2161 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2162 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2163 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2164 /* done */
2165 break;
2166 }
2167 else if (*ptr == ';') {
2168 /* chunk extension, ends at next CRLF */
2169 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2170 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2171 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2172 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2173
2174 while (!HTTP_IS_CRLF(*ptr)) {
2175 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2176 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2177 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2178 return 0;
2179 }
2180 /* we have a CRLF now, loop above */
2181 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2182 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2183 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2184 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2185 }
2186
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2187 /* OK we found our CRLF and now <ptr> points to the next byte, which may
2188 * or may not be present. We save the number of bytes parsed into
2189 * msg->sol.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2190 */
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2191 msg->sol = ptr - ptr_old;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2192 if (unlikely(ptr < ptr_old))
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2193 msg->sol += buf->size;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2194 msg->chunk_len = chunk;
2195 msg->body_len += chunk;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2196 return msg->sol;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2197 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2198 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2199 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2200}
2201
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2202/* This function skips trailers in the buffer associated with HTTP message
2203 * <msg>. The first visited position is msg->next. If the end of the trailers is
2204 * found, the function returns >0. So, the caller can automatically schedul it
2205 * to be forwarded, and switch msg->msg_state to HTTP_MSG_DONE. If not enough
2206 * data are available, the function does not change anything except maybe
2207 * msg->sol if it could parse some lines, and returns zero. If a parse error
2208 * is encountered, the function returns < 0 and does not change anything except
2209 * maybe msg->sol. Note that the message must already be in HTTP_MSG_TRAILERS
2210 * state before calling this function, which implies that all non-trailers data
2211 * have already been scheduled for forwarding, and that msg->next exactly
2212 * matches the length of trailers already parsed and not forwarded. It is also
2213 * important to note that this function is designed to be able to parse wrapped
2214 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2215 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2216static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2217{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2218 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2219
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2220 /* we have msg->next which points to next line. Look for CRLF. But
2221 * first, we reset msg->sol */
2222 msg->sol = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2223 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2224 const char *p1 = NULL, *p2 = NULL;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2225 const char *start = b_ptr(buf, msg->next + msg->sol);
2226 const char *stop = bi_end(buf);
2227 const char *ptr = start;
2228 int bytes = 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2229
2230 /* scan current line and stop at LF or CRLF */
2231 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2232 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2233 return 0;
2234
2235 if (*ptr == '\n') {
2236 if (!p1)
2237 p1 = ptr;
2238 p2 = ptr;
2239 break;
2240 }
2241
2242 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2243 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2244 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2245 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2246 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2247 p1 = ptr;
2248 }
2249
2250 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2251 if (ptr >= buf->data + buf->size)
2252 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2253 }
2254
2255 /* after LF; point to beginning of next line */
2256 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2257 if (p2 >= buf->data + buf->size)
2258 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2259
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2260 bytes = p2 - start;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2261 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2262 bytes += buf->size;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2263 msg->sol += bytes;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2264
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2265 /* LF/CRLF at beginning of line => end of trailers at p2.
2266 * Everything was scheduled for forwarding, there's nothing left
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2267 * from this message. */
2268 if (p1 == start)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2269 return 1;
Christopher Faulet2fb28802015-12-01 10:40:57 +0100[diff] [blame]2270
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2271 /* OK, next line then */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2272 }
2273}
2274
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2275/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF or
2276 * a possible LF alone at the end of a chunk. The caller should adjust msg->next
2277 * in order to include this part into the next forwarding phase. Note that the
2278 * caller must ensure that ->p points to the first byte to parse. It returns
2279 * the number of bytes parsed on success, so the caller can set msg_state to
2280 * HTTP_MSG_CHUNK_SIZE. If not enough data are available, the function does not
2281 * change anything and returns zero. If a parse error is encountered, the
2282 * function returns < 0. Note: this function is designed to parse wrapped CRLF
2283 * at the end of the buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2284 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2285static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2286{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2287 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2288 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2289 int bytes;
2290
2291 /* NB: we'll check data availabilty at the end. It's not a
2292 * problem because whatever we match first will be checked
2293 * against the correct length.
2294 */
2295 bytes = 1;
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2296 ptr = b_ptr(buf, msg->next);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2297 if (*ptr == '\r') {
2298 bytes++;
2299 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2300 if (ptr >= buf->data + buf->size)
2301 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2302 }
2303
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2304 if (msg->next + bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2305 return 0;
2306
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2307 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2308 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2309 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2310 }
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]2311 return bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2312}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2313
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2314/* Parses a qvalue and returns it multipled by 1000, from 0 to 1000. If the
2315 * value is larger than 1000, it is bound to 1000. The parser consumes up to
2316 * 1 digit, one dot and 3 digits and stops on the first invalid character.
2317 * Unparsable qvalues return 1000 as "q=1.000".
2318 */
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2319int parse_qvalue(const char *qvalue, const char **end)
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2320{
2321 int q = 1000;
2322
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2323 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2324 goto out;
2325 q = (*qvalue++ - '0') * 1000;
2326
2327 if (*qvalue++ != '.')
2328 goto out;
2329
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2330 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2331 goto out;
2332 q += (*qvalue++ - '0') * 100;
2333
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2334 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2335 goto out;
2336 q += (*qvalue++ - '0') * 10;
2337
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2338 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2339 goto out;
2340 q += (*qvalue++ - '0') * 1;
2341 out:
2342 if (q > 1000)
2343 q = 1000;
Willy Tarreau38b3aa52014-04-22 23:32:05 +0200[diff] [blame]2344 if (end)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2345 *end = qvalue;
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2346 return q;
2347}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2348
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2349void http_adjust_conn_mode(struct stream *s, struct http_txn *txn, struct http_msg *msg)
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2350{
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]2351 struct proxy *fe = strm_fe(s);
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2352 int tmp = TX_CON_WANT_KAL;
2353
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2354 if (!((fe->options2|s->be->options2) & PR_O2_FAKE_KA)) {
2355 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2356 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN)
2357 tmp = TX_CON_WANT_TUN;
2358
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2359 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2360 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2361 tmp = TX_CON_WANT_TUN;
2362 }
2363
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2364 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2365 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL) {
2366 /* option httpclose + server_close => forceclose */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2367 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2368 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2369 tmp = TX_CON_WANT_CLO;
2370 else
2371 tmp = TX_CON_WANT_SCL;
2372 }
2373
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2374 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2375 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL)
2376 tmp = TX_CON_WANT_CLO;
2377
2378 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
2379 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
2380
2381 if (!(txn->flags & TX_HDR_CONN_PRS) &&
2382 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) {
2383 /* parse the Connection header and possibly clean it */
2384 int to_del = 0;
2385 if ((msg->flags & HTTP_MSGF_VER_11) ||
2386 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2387 !((fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2388 to_del |= 2; /* remove "keep-alive" */
2389 if (!(msg->flags & HTTP_MSGF_VER_11))
2390 to_del |= 1; /* remove "close" */
2391 http_parse_connection_header(txn, msg, to_del);
2392 }
2393
2394 /* check if client or config asks for explicit close in KAL/SCL */
2395 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
2396 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
2397 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
2398 (!(msg->flags & HTTP_MSGF_VER_11) && !(txn->flags & TX_HDR_CONN_KAL)) || /* no "connection: k-a" in 1.0 */
2399 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2400 fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2401 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
2402}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2403
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2404/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2405 * processing can continue on next analysers, or zero if it either needs more
2406 * data or wants to immediately abort the request (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2407 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req.analysers
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2408 * when it has nothing left to do, and may remove any analyser when it wants to
2409 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2410 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2411int http_wait_for_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2412{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2413 /*
2414 * We will parse the partial (or complete) lines.
2415 * We will check the request syntax, and also join multi-line
2416 * headers. An index of all the lines will be elaborated while
2417 * parsing.
2418 *
2419 * For the parsing, we use a 28 states FSM.
2420 *
2421 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2422 * req->buf->p = beginning of request
2423 * req->buf->p + msg->eoh = end of processed headers / start of current one
2424 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2425 * msg->eol = end of current header or line (LF or CRLF)
2426 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2427 *
2428 * At end of parsing, we may perform a capture of the error (if any), and
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2429 * we will set a few fields (txn->meth, sn->flags/SF_REDIRECTABLE).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2430 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2431 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2432 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2433
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2434 int cur_idx;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2435 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]2436 struct http_txn *txn = s->txn;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2437 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2438 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2439
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2440 DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2441 now_ms, __FUNCTION__,
2442 s,
2443 req,
2444 req->rex, req->wex,
2445 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2446 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2447 req->analysers);
2448
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2449 /* we're speaking HTTP here, so let's speak HTTP to the client */
2450 s->srv_error = http_return_srv_error;
2451
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2452 /* There's a protected area at the end of the buffer for rewriting
2453 * purposes. We don't want to start to parse the request if the
2454 * protected area is affected, because we may have to move processed
2455 * data later, which is much more complicated.
2456 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2457 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2458 if (txn->flags & TX_NOT_FIRST) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]2459 if (unlikely(!channel_is_rewritable(req))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2460 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2461 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2462 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2463 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2464 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]2465 req->flags |= CF_WAKE_WRITE;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2466 return 0;
2467 }
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2468 if (unlikely(bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2469 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite))
2470 buffer_slow_realign(req->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2471 }
2472
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2473 /* Note that we have the same problem with the response ; we
2474 * may want to send a redirect, error or anything which requires
2475 * some spare space. So we'll ensure that we have at least
2476 * maxrewrite bytes available in the response buffer before
2477 * processing that one. This will only affect pipelined
2478 * keep-alive requests.
2479 */
2480 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2481 unlikely(!channel_is_rewritable(&s->res) ||
2482 bi_end(s->res.buf) < b_ptr(s->res.buf, txn->rsp.next) ||
2483 bi_end(s->res.buf) > s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)) {
2484 if (s->res.buf->o) {
2485 if (s->res.flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2486 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2487 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2488 channel_dont_connect(req);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2489 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
2490 s->res.flags |= CF_WAKE_WRITE;
2491 s->res.analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2492 return 0;
2493 }
2494 }
2495
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2496 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2497 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2498 }
2499
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2500 /* 1: we might have to print this header in debug mode */
2501 if (unlikely((global.mode & MODE_DEBUG) &&
2502 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]2503 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2504 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2505
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2506 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2507 /* this is a bit complex : in case of error on the request line,
2508 * we know that rq.l is still zero, so we display only the part
2509 * up to the end of the line (truncated by debug_hdr).
2510 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2511 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2512 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2513
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2514 sol += hdr_idx_first_pos(&txn->hdr_idx);
2515 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2516
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2517 while (cur_idx) {
2518 eol = sol + txn->hdr_idx.v[cur_idx].len;
2519 debug_hdr("clihdr", s, sol, eol);
2520 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2521 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2522 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2523 }
2524
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2525
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2526 /*
2527 * Now we quickly check if we have found a full valid request.
2528 * If not so, we check the FD and buffer states before leaving.
2529 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2530 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2531 * requests are checked first. When waiting for a second request
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2532 * on a keep-alive stream, if we encounter and error, close, t/o,
2533 * we note the error in the stream flags but don't set any state.
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2534 * Since the error will be noted there, it will not be counted by
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2535 * process_stream() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2536 * Last, we may increase some tracked counters' http request errors on
2537 * the cases that are deliberately the client's fault. For instance,
2538 * a timeout or connection reset is not counted as an error. However
2539 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2540 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2541
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2542 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2543 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2544 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2545 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2546 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2547 stream_inc_http_req_ctr(s);
2548 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2549 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2550 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2551 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2552
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2553 /* 1: Since we are in header mode, if there's no space
2554 * left for headers, we won't be able to free more
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2555 * later, so the stream will never terminate. We
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2556 * must terminate it now.
2557 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2558 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2559 /* FIXME: check if URI is set and return Status
2560 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2561 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2562 stream_inc_http_req_ctr(s);
2563 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2564 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2565 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2566 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2567 goto return_bad_req;
2568 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2569
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2570 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2571 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2572 if (!(s->flags & SF_ERR_MASK))
2573 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2574
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2575 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2576 goto failed_keep_alive;
2577
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2578 if (sess->fe->options & PR_O_IGNORE_PRB)
2579 goto failed_keep_alive;
2580
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2581 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2582 if (msg->err_pos >= 0) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2583 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2584 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2585 }
2586
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2587 txn->status = 400;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2588 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2589 http_reply_and_close(s, txn->status, NULL);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2590 req->analysers &= AN_FLT_END;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2591 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2592 proxy_inc_fe_req_ctr(sess->fe);
2593 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2594 if (sess->listener->counters)
2595 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2596
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2597 if (!(s->flags & SF_FINST_MASK))
2598 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2599 return 0;
2600 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2601
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2602 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2603 else if (req->flags & CF_READ_TIMEOUT || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2604 if (!(s->flags & SF_ERR_MASK))
2605 s->flags |= SF_ERR_CLITO;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2606
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2607 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2608 goto failed_keep_alive;
2609
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2610 if (sess->fe->options & PR_O_IGNORE_PRB)
2611 goto failed_keep_alive;
2612
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2613 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2614 if (msg->err_pos >= 0) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2615 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2616 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2617 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2618 txn->status = 408;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2619 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2620 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_408));
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2621 req->analysers &= AN_FLT_END;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2622
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2623 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2624 proxy_inc_fe_req_ctr(sess->fe);
2625 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2626 if (sess->listener->counters)
2627 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2628
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2629 if (!(s->flags & SF_FINST_MASK))
2630 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2631 return 0;
2632 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2633
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2634 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2635 else if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2636 if (!(s->flags & SF_ERR_MASK))
2637 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2638
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2639 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2640 goto failed_keep_alive;
2641
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2642 if (sess->fe->options & PR_O_IGNORE_PRB)
2643 goto failed_keep_alive;
2644
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2645 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2646 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2647 txn->status = 400;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2648 msg->msg_state = HTTP_MSG_ERROR;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2649 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2650 req->analysers &= AN_FLT_END;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2651 stream_inc_http_err_ctr(s);
2652 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2653 proxy_inc_fe_req_ctr(sess->fe);
2654 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2655 if (sess->listener->counters)
2656 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2657
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2658 if (!(s->flags & SF_FINST_MASK))
2659 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2660 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2661 }
2662
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2663 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2664 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2665 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2666#ifdef TCP_QUICKACK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2667 if (sess->listener->options & LI_O_NOQUICKACK && req->buf->i &&
2668 objt_conn(sess->origin) && conn_ctrl_ready(__objt_conn(sess->origin))) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2669 /* We need more data, we have to re-enable quick-ack in case we
2670 * previously disabled it, otherwise we might cause the client
2671 * to delay next data.
2672 */
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2673 setsockopt(__objt_conn(sess->origin)->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2674 }
2675#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2676
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2677 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2678 /* If the client starts to talk, let's fall back to
2679 * request timeout processing.
2680 */
2681 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2682 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2683 }
2684
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2685 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2686 if (!tick_isset(req->analyse_exp)) {
2687 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2688 (txn->flags & TX_WAIT_NEXT_RQ) &&
2689 tick_isset(s->be->timeout.httpka))
2690 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2691 else
2692 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2693 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2694
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2695 /* we're not ready yet */
2696 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2697
2698 failed_keep_alive:
2699 /* Here we process low-level errors for keep-alive requests. In
2700 * short, if the request is not the first one and it experiences
2701 * a timeout, read error or shutdown, we just silently close so
2702 * that the client can try again.
2703 */
2704 txn->status = 0;
2705 msg->msg_state = HTTP_MSG_RQBEFORE;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]2706 req->analysers &= AN_FLT_END;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2707 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]2708 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2709 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2710 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2711 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2712 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2713
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2714 /* OK now we have a complete HTTP request with indexed headers. Let's
2715 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2716 * later. At this point, we have the last CRLF at req->buf->data + msg->eoh.
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]2717 * If the request is in HTTP/0.9 form, the rule is still true, and eoh
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2718 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2719 * byte after the last LF. msg->sov points to the first byte of data.
2720 * msg->eol cannot be trusted because it may have been left uninitialized
2721 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2722 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2723
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2724 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2725 proxy_inc_fe_req_ctr(sess->fe); /* one more valid request for this FE */
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2726
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2727 if (txn->flags & TX_WAIT_NEXT_RQ) {
2728 /* kill the pending keep-alive timeout */
2729 txn->flags &= ~TX_WAIT_NEXT_RQ;
2730 req->analyse_exp = TICK_ETERNITY;
2731 }
2732
2733
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2734 /* Maybe we found in invalid header name while we were configured not
2735 * to block on that, so we have to capture it now.
2736 */
2737 if (unlikely(msg->err_pos >= 0))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2738 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2739
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2740 /*
2741 * 1: identify the method
2742 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2743 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2744
2745 /* we can make use of server redirect on GET and HEAD */
2746 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2747 s->flags |= SF_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2748
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2749 /*
2750 * 2: check if the URI matches the monitor_uri.
2751 * We have to do this for every request which gets in, because
2752 * the monitor-uri is defined by the frontend.
2753 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2754 if (unlikely((sess->fe->monitor_uri_len != 0) &&
2755 (sess->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2756 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2757 sess->fe->monitor_uri,
2758 sess->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2759 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2760 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2761 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2762 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2763
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2764 s->flags |= SF_MONITOR;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2765 sess->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2766
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2767 /* Check if we want to fail this monitor request or not */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2768 list_for_each_entry(cond, &sess->fe->mon_fail_cond, list) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]2769 int ret = acl_exec_cond(cond, sess->fe, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2770
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2771 ret = acl_pass(ret);
2772 if (cond->pol == ACL_COND_UNLESS)
2773 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2774
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2775 if (ret) {
2776 /* we fail this request, let's return 503 service unavail */
2777 txn->status = 503;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2778 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_503));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2779 if (!(s->flags & SF_ERR_MASK))
2780 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2781 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2782 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2783 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2784
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2785 /* nothing to fail, let's reply normaly */
2786 txn->status = 200;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]2787 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_200));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2788 if (!(s->flags & SF_ERR_MASK))
2789 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2790 goto return_prx_cond;
2791 }
2792
2793 /*
2794 * 3: Maybe we have to copy the original REQURI for the logs ?
2795 * Note: we cannot log anymore if the request has been
2796 * classified as invalid.
2797 */
2798 if (unlikely(s->logs.logwait & LW_REQ)) {
2799 /* we have a complete HTTP request that we must log */
2800 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2801 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2802
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2803 if (urilen >= REQURI_LEN)
2804 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2805 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2806 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2807
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2808 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2809 s->do_log(s);
2810 } else {
2811 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2812 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2813 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2814
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]2815 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
2816 * exactly one digit "." one digit. This check may be disabled using
2817 * option accept-invalid-http-request.
2818 */
2819 if (!(sess->fe->options2 & PR_O2_REQBUG_OK)) {
2820 if (msg->sl.rq.v_l != 8) {
2821 msg->err_pos = msg->sl.rq.v;
2822 goto return_bad_req;
2823 }
2824
2825 if (req->buf->p[msg->sl.rq.v + 4] != '/' ||
2826 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 5]) ||
2827 req->buf->p[msg->sl.rq.v + 6] != '.' ||
2828 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 7])) {
2829 msg->err_pos = msg->sl.rq.v + 4;
2830 goto return_bad_req;
2831 }
2832 }
Willy Tarreau13317662015-05-01 13:47:08 +0200[diff] [blame]2833 else {
2834 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
2835 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
2836 goto return_bad_req;
2837 }
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]2838
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2839 /* ... and check if the request is HTTP/1.1 or above */
2840 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2841 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2842 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2843 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2844 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2845
2846 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2847 txn->flags &= ~(TX_HDR_CONN_PRS | TX_HDR_CONN_CLO | TX_HDR_CONN_KAL | TX_HDR_CONN_UPG);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2848
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2849 /* if the frontend has "option http-use-proxy-header", we'll check if
2850 * we have what looks like a proxied connection instead of a connection,
2851 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2852 * Note that this is *not* RFC-compliant, however browsers and proxies
2853 * happen to do that despite being non-standard :-(
2854 * We consider that a request not beginning with either '/' or '*' is
2855 * a proxied connection, which covers both "scheme://location" and
2856 * CONNECT ip:port.
2857 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2858 if ((sess->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2859 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2860 txn->flags |= TX_USE_PX_CONN;
2861
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2862 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2863 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2864
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2865 /* 5: we may need to capture headers */
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]2866 if (unlikely((s->logs.logwait & LW_REQHDR) && s->req_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2867 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]2868 s->req_cap, sess->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2869
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2870 /* 6: determine the transfer-length according to RFC2616 #4.4, updated
2871 * by RFC7230#3.3.3 :
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2872 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2873 * The length of a message body is determined by one of the following
2874 * (in order of precedence):
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2875 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2876 * 1. Any response to a HEAD request and any response with a 1xx
2877 * (Informational), 204 (No Content), or 304 (Not Modified) status
2878 * code is always terminated by the first empty line after the
2879 * header fields, regardless of the header fields present in the
2880 * message, and thus cannot contain a message body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2881 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2882 * 2. Any 2xx (Successful) response to a CONNECT request implies that
2883 * the connection will become a tunnel immediately after the empty
2884 * line that concludes the header fields. A client MUST ignore any
2885 * Content-Length or Transfer-Encoding header fields received in
2886 * such a message.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2887 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]2888 * 3. If a Transfer-Encoding header field is present and the chunked
2889 * transfer coding (Section 4.1) is the final encoding, the message
2890 * body length is determined by reading and decoding the chunked
2891 * data until the transfer coding indicates the data is complete.
2892 *
2893 * If a Transfer-Encoding header field is present in a response and
2894 * the chunked transfer coding is not the final encoding, the
2895 * message body length is determined by reading the connection until
2896 * it is closed by the server. If a Transfer-Encoding header field
2897 * is present in a request and the chunked transfer coding is not
2898 * the final encoding, the message body length cannot be determined
2899 * reliably; the server MUST respond with the 400 (Bad Request)
2900 * status code and then close the connection.
2901 *
2902 * If a message is received with both a Transfer-Encoding and a
2903 * Content-Length header field, the Transfer-Encoding overrides the
2904 * Content-Length. Such a message might indicate an attempt to
2905 * perform request smuggling (Section 9.5) or response splitting
2906 * (Section 9.4) and ought to be handled as an error. A sender MUST
2907 * remove the received Content-Length field prior to forwarding such
2908 * a message downstream.
2909 *
2910 * 4. If a message is received without Transfer-Encoding and with
2911 * either multiple Content-Length header fields having differing
2912 * field-values or a single Content-Length header field having an
2913 * invalid value, then the message framing is invalid and the
2914 * recipient MUST treat it as an unrecoverable error. If this is a
2915 * request message, the server MUST respond with a 400 (Bad Request)
2916 * status code and then close the connection. If this is a response
2917 * message received by a proxy, the proxy MUST close the connection
2918 * to the server, discard the received response, and send a 502 (Bad
2919 * Gateway) response to the client. If this is a response message
2920 * received by a user agent, the user agent MUST close the
2921 * connection to the server and discard the received response.
2922 *
2923 * 5. If a valid Content-Length header field is present without
2924 * Transfer-Encoding, its decimal value defines the expected message
2925 * body length in octets. If the sender closes the connection or
2926 * the recipient times out before the indicated number of octets are
2927 * received, the recipient MUST consider the message to be
2928 * incomplete and close the connection.
2929 *
2930 * 6. If this is a request message and none of the above are true, then
2931 * the message body length is zero (no message body is present).
2932 *
2933 * 7. Otherwise, this is a response message without a declared message
2934 * body length, so the message body length is determined by the
2935 * number of octets received prior to the server closing the
2936 * connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2937 */
2938
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2939 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2940 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]2941 while (http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2942 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2943 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2944 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]2945 /* chunked not last, return badreq */
2946 goto return_bad_req;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2947 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2948 }
2949
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]2950 /* Chunked requests must have their content-length removed */
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2951 ctx.idx = 0;
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]2952 if (msg->flags & HTTP_MSGF_TE_CHNK) {
2953 while (http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx))
2954 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2955 }
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]2956 else while (http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2957 signed long long cl;
2958
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2959 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2960 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2961 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2962 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2963
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2964 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2965 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2966 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2967 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2968
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2969 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2970 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2971 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2972 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2973
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2974 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2975 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2976 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2977 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2978
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2979 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2980 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2981 }
2982
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]2983 /* even bodyless requests have a known length */
2984 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2985
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]2986 /* Until set to anything else, the connection mode is set as Keep-Alive. It will
2987 * only change if both the request and the config reference something else.
2988 * Option httpclose by itself sets tunnel mode where headers are mangled.
2989 * However, if another mode is set, it will affect it (eg: server-close/
2990 * keep-alive + httpclose = close). Note that we avoid to redo the same work
2991 * if FE and BE have the same settings (common). The method consists in
2992 * checking if options changed between the two calls (implying that either
2993 * one is non-null, or one of them is non-null and we are there for the first
2994 * time.
2995 */
2996 if (!(txn->flags & TX_HDR_CONN_PRS) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2997 ((sess->fe->options & PR_O_HTTP_MODE) != (s->be->options & PR_O_HTTP_MODE)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2998 http_adjust_conn_mode(s, txn, msg);
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]2999
Willy Tarreau9fbe18e2015-05-01 22:42:08 +0200[diff] [blame]3000 /* we may have to wait for the request's body */
3001 if ((s->be->options & PR_O_WREQ_BODY) &&
3002 (msg->body_len || (msg->flags & HTTP_MSGF_TE_CHNK)))
3003 req->analysers |= AN_REQ_HTTP_BODY;
3004
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3005 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3006 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3007 req->analyse_exp = TICK_ETERNITY;
3008 return 1;
3009
3010 return_bad_req:
3011 /* We centralize bad requests processing here */
3012 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3013 /* we detected a parsing error. We want to archive this request
3014 * in the dedicated proxy area for later troubleshooting.
3015 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3016 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3017 }
3018
3019 txn->req.msg_state = HTTP_MSG_ERROR;
3020 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]3021 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3022
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3023 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]3024 if (sess->listener->counters)
3025 sess->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3026
3027 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]3028 if (!(s->flags & SF_ERR_MASK))
3029 s->flags |= SF_ERR_PRXCOND;
3030 if (!(s->flags & SF_FINST_MASK))
3031 s->flags |= SF_FINST_R;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3032
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]3033 req->analysers &= AN_FLT_END;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3034 req->analyse_exp = TICK_ETERNITY;
3035 return 0;
3036}
3037
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]3038
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3039/* This function prepares an applet to handle the stats. It can deal with the
3040 * "100-continue" expectation, check that admin rules are met for POST requests,
3041 * and program a response message if something was unexpected. It cannot fail
3042 * and always relies on the stats applet to complete the job. It does not touch
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3043 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3044 * s->target which is supposed to already point to the stats applet. The caller
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3045 * is expected to have already assigned an appctx to the stream.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3046 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3047int http_handle_stats(struct stream *s, struct channel *req)
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3048{
3049 struct stats_admin_rule *stats_admin_rule;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]3050 struct stream_interface *si = &s->si[1];
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3051 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3052 struct http_txn *txn = s->txn;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3053 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3054 struct uri_auth *uri_auth = s->be->uri_auth;
3055 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3056 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3057
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3058 appctx = si_appctx(si);
3059 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
3060 appctx->st1 = appctx->st2 = 0;
3061 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
3062 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3063 if ((msg->flags & HTTP_MSGF_VER_11) && (s->txn->meth != HTTP_METH_HEAD))
Willy Tarreauaf3cf702014-04-22 22:19:53 +0200[diff] [blame]3064 appctx->ctx.stats.flags |= STAT_CHUNKED;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3065
3066 uri = msg->chn->buf->p + msg->sl.rq.u;
3067 lookup = uri + uri_auth->uri_len;
3068
3069 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
3070 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3071 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3072 break;
3073 }
3074 }
3075
3076 if (uri_auth->refresh) {
3077 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
3078 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3079 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3080 break;
3081 }
3082 }
3083 }
3084
3085 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
3086 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3087 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3088 break;
3089 }
3090 }
3091
Willy Tarreau1e62df92016-01-11 18:57:53 +0100[diff] [blame]3092 for (h = lookup; h <= uri + msg->sl.rq.u_l - 6; h++) {
3093 if (memcmp(h, ";typed", 6) == 0) {
3094 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
3095 appctx->ctx.stats.flags |= STAT_FMT_TYPED;
3096 break;
3097 }
3098 }
3099
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3100 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3101 if (memcmp(h, ";st=", 4) == 0) {
3102 int i;
3103 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3104 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3105 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
3106 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3107 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3108 break;
3109 }
3110 }
3111 break;
3112 }
3113 }
3114
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3115 appctx->ctx.stats.scope_str = 0;
3116 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3117 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3118 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
3119 int itx = 0;
3120 const char *h2;
3121 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
3122 const char *err;
3123
3124 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
3125 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3126 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3127 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
3128 itx++;
3129 h++;
3130 }
3131
3132 if (itx > STAT_SCOPE_TXT_MAXLEN)
3133 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3134 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3135
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3136 /* scope_txt = search query, appctx->ctx.stats.scope_len is always <= STAT_SCOPE_TXT_MAXLEN */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3137 memcpy(scope_txt, h2, itx);
3138 scope_txt[itx] = '\0';
3139 err = invalid_char(scope_txt);
3140 if (err) {
3141 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3142 appctx->ctx.stats.scope_str = 0;
3143 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3144 }
3145 break;
3146 }
3147 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3148
3149 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3150 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3151 int ret = 1;
3152
3153 if (stats_admin_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3154 ret = acl_exec_cond(stats_admin_rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3155 ret = acl_pass(ret);
3156 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3157 ret = !ret;
3158 }
3159
3160 if (ret) {
3161 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3162 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3163 break;
3164 }
3165 }
3166
3167 /* Was the status page requested with a POST ? */
Willy Tarreaub8cdf522015-05-29 01:09:15 +0200[diff] [blame]3168 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3169 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreaucfe7fdd2014-04-26 22:08:32 +0200[diff] [blame]3170 /* we'll need the request body, possibly after sending 100-continue */
Willy Tarreaub8cdf522015-05-29 01:09:15 +0200[diff] [blame]3171 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE)
3172 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3173 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3174 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3175 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3176 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
3177 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]3178 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3179 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3180 else {
3181 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3182 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3183 }
3184
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3185 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3186 return 1;
3187}
3188
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3189/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
3190 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
3191 */
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3192void inet_set_tos(int fd, const struct sockaddr_storage *from, int tos)
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3193{
3194#ifdef IP_TOS
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3195 if (from->ss_family == AF_INET)
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3196 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3197#endif
3198#ifdef IPV6_TCLASS
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3199 if (from->ss_family == AF_INET6) {
3200 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)from)->sin6_addr))
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3201 /* v4-mapped addresses need IP_TOS */
3202 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3203 else
3204 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
3205 }
3206#endif
3207}
3208
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3209int http_transform_header_str(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3210 const char* name, unsigned int name_len,
3211 const char *str, struct my_regex *re,
3212 int action)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3213{
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3214 struct hdr_ctx ctx;
3215 char *buf = msg->chn->buf->p;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3216 struct hdr_idx *idx = &s->txn->hdr_idx;
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3217 int (*http_find_hdr_func)(const char *name, int len, char *sol,
3218 struct hdr_idx *idx, struct hdr_ctx *ctx);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3219 struct chunk *output = get_trash_chunk();
3220
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3221 ctx.idx = 0;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3222
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3223 /* Choose the header browsing function. */
3224 switch (action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3225 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3226 http_find_hdr_func = http_find_header2;
3227 break;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3228 case ACT_HTTP_REPLACE_HDR:
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3229 http_find_hdr_func = http_find_full_header2;
3230 break;
3231 default: /* impossible */
3232 return -1;
3233 }
3234
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3235 while (http_find_hdr_func(name, name_len, buf, idx, &ctx)) {
3236 struct hdr_idx_elem *hdr = idx->v + ctx.idx;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3237 int delta;
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3238 char *val = ctx.line + ctx.val;
3239 char* val_end = val + ctx.vlen;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3240
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3241 if (!regex_exec_match2(re, val, val_end-val, MAX_MATCH, pmatch, 0))
3242 continue;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3243
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3244 output->len = exp_replace(output->str, output->size, val, str, pmatch);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3245 if (output->len == -1)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3246 return -1;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3247
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3248 delta = buffer_replace2(msg->chn->buf, val, val_end, output->str, output->len);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3249
3250 hdr->len += delta;
3251 http_msg_move_end(msg, delta);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3252
3253 /* Adjust the length of the current value of the index. */
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3254 ctx.vlen += delta;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3255 }
3256
3257 return 0;
3258}
3259
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3260static int http_transform_header(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3261 const char* name, unsigned int name_len,
3262 struct list *fmt, struct my_regex *re,
3263 int action)
3264{
3265 struct chunk *replace = get_trash_chunk();
3266
3267 replace->len = build_logline(s, replace->str, replace->size, fmt);
3268 if (replace->len >= replace->size - 1)
3269 return -1;
3270
3271 return http_transform_header_str(s, msg, name, name_len, replace->str, re, action);
3272}
3273
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3274/* Executes the http-request rules <rules> for stream <s>, proxy <px> and
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3275 * transaction <txn>. Returns the verdict of the first rule that prevents
3276 * further processing of the request (auth, deny, ...), and defaults to
3277 * HTTP_RULE_RES_STOP if it executed all rules or stopped on an allow, or
3278 * HTTP_RULE_RES_CONT if the last rule was reached. It may set the TX_CLTARPIT
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3279 * on txn->flags if it encounters a tarpit rule. If <deny_status> is not NULL
3280 * and a deny/tarpit rule is matched, it will be filled with this rule's deny
3281 * status.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3282 */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3283enum rule_result
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3284http_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]3285{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3286 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3287 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3288 struct connection *cli_conn;
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]3289 struct act_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3290 struct hdr_ctx ctx;
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3291 const char *auth_realm;
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3292 int act_flags = 0;
Thierry Fournier4b788f72016-06-01 13:35:36 +0200[diff] [blame]3293 int len;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3294
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3295 /* If "the current_rule_list" match the executed rule list, we are in
3296 * resume condition. If a resume is needed it is always in the action
3297 * and never in the ACL or converters. In this case, we initialise the
3298 * current rule, and go to the action execution point.
3299 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3300 if (s->current_rule) {
3301 rule = s->current_rule;
3302 s->current_rule = NULL;
3303 if (s->current_rule_list == rules)
3304 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3305 }
3306 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3307
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3308 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3309
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3310 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3311 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3312 int ret;
3313
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3314 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]3315 ret = acl_pass(ret);
3316
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3317 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3318 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3319
3320 if (!ret) /* condition not matched */
3321 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3322 }
3323
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3324 act_flags |= ACT_FLAG_FIRST;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3325resume_execution:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3326 switch (rule->action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3327 case ACT_ACTION_ALLOW:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3328 return HTTP_RULE_RES_STOP;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3329
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3330 case ACT_ACTION_DENY:
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3331 if (deny_status)
3332 *deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3333 return HTTP_RULE_RES_DENY;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3334
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3335 case ACT_HTTP_REQ_TARPIT:
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3336 txn->flags |= TX_CLTARPIT;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]3337 if (deny_status)
3338 *deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3339 return HTTP_RULE_RES_DENY;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3340
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3341 case ACT_HTTP_REQ_AUTH:
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3342 /* Auth might be performed on regular http-req rules as well as on stats */
3343 auth_realm = rule->arg.auth.realm;
3344 if (!auth_realm) {
3345 if (px->uri_auth && rules == &px->uri_auth->http_req_rules)
3346 auth_realm = STATS_DEFAULT_REALM;
3347 else
3348 auth_realm = px->id;
3349 }
3350 /* send 401/407 depending on whether we use a proxy or not. We still
3351 * count one error, because normal browsing won't significantly
3352 * increase the counter but brute force attempts will.
3353 */
3354 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, auth_realm);
3355 txn->status = (txn->flags & TX_USE_PX_CONN) ? 407 : 401;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]3356 http_reply_and_close(s, txn->status, &trash);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3357 stream_inc_http_err_ctr(s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3358 return HTTP_RULE_RES_ABRT;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3359
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3360 case ACT_HTTP_REDIR:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3361 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3362 return HTTP_RULE_RES_BADREQ;
3363 return HTTP_RULE_RES_DONE;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3364
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3365 case ACT_HTTP_SET_NICE:
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3366 s->task->nice = rule->arg.nice;
3367 break;
3368
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3369 case ACT_HTTP_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3370 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3371 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]3372 break;
3373
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3374 case ACT_HTTP_SET_MARK:
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3375#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3376 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3377 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]3378#endif
3379 break;
3380
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3381 case ACT_HTTP_SET_LOGL:
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3382 s->logs.level = rule->arg.loglevel;
3383 break;
3384
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3385 case ACT_HTTP_REPLACE_HDR:
3386 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3387 if (http_transform_header(s, &txn->req, rule->arg.hdr_add.name,
3388 rule->arg.hdr_add.name_len,
3389 &rule->arg.hdr_add.fmt,
3390 &rule->arg.hdr_add.re, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3391 return HTTP_RULE_RES_BADREQ;
3392 break;
3393
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3394 case ACT_HTTP_DEL_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3395 ctx.idx = 0;
3396 /* remove all occurrences of the header */
3397 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3398 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3399 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3400 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3401 break;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3402
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3403 case ACT_HTTP_SET_HDR:
3404 case ACT_HTTP_ADD_HDR:
Thierry Fournier4b788f72016-06-01 13:35:36 +0200[diff] [blame]3405 /* The scope of the trash buffer must be limited to this function. The
3406 * build_logline() function can execute a lot of other function which
3407 * can use the trash buffer. So for limiting the scope of this global
3408 * buffer, we build first the header value using build_logline, and
3409 * after we store the header name.
3410 */
3411 len = rule->arg.hdr_add.name_len + 2,
3412 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]3413 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
Thierry Fournier4b788f72016-06-01 13:35:36 +0200[diff] [blame]3414 trash.str[rule->arg.hdr_add.name_len] = ':';
3415 trash.str[rule->arg.hdr_add.name_len + 1] = ' ';
3416 trash.len = len;
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3417
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3418 if (rule->action == ACT_HTTP_SET_HDR) {
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3419 /* remove all occurrences of the header */
3420 ctx.idx = 0;
3421 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3422 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3423 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
3424 }
3425 }
3426
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3427 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3428 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3429
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3430 case ACT_HTTP_DEL_ACL:
3431 case ACT_HTTP_DEL_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3432 struct pat_ref *ref;
3433 char *key;
3434 int len;
3435
3436 /* collect reference */
3437 ref = pat_ref_lookup(rule->arg.map.ref);
3438 if (!ref)
3439 continue;
3440
3441 /* collect key */
3442 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3443 key = trash.str;
3444 key[len] = '\0';
3445
3446 /* perform update */
3447 /* returned code: 1=ok, 0=ko */
3448 pat_ref_delete(ref, key);
3449
3450 break;
3451 }
3452
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3453 case ACT_HTTP_ADD_ACL: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3454 struct pat_ref *ref;
3455 char *key;
3456 struct chunk *trash_key;
3457 int len;
3458
3459 trash_key = get_trash_chunk();
3460
3461 /* collect reference */
3462 ref = pat_ref_lookup(rule->arg.map.ref);
3463 if (!ref)
3464 continue;
3465
3466 /* collect key */
3467 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3468 key = trash_key->str;
3469 key[len] = '\0';
3470
3471 /* perform update */
3472 /* add entry only if it does not already exist */
3473 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3474 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3475
3476 break;
3477 }
3478
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3479 case ACT_HTTP_SET_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3480 struct pat_ref *ref;
3481 char *key, *value;
3482 struct chunk *trash_key, *trash_value;
3483 int len;
3484
3485 trash_key = get_trash_chunk();
3486 trash_value = get_trash_chunk();
3487
3488 /* collect reference */
3489 ref = pat_ref_lookup(rule->arg.map.ref);
3490 if (!ref)
3491 continue;
3492
3493 /* collect key */
3494 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3495 key = trash_key->str;
3496 key[len] = '\0';
3497
3498 /* collect value */
3499 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3500 value = trash_value->str;
3501 value[len] = '\0';
3502
3503 /* perform update */
3504 if (pat_ref_find_elt(ref, key) != NULL)
3505 /* update entry if it exists */
3506 pat_ref_set(ref, key, value, NULL);
3507 else
3508 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3509 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3510
3511 break;
3512 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3513
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3514 case ACT_CUSTOM:
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3515 if ((px->options & PR_O_ABRT_CLOSE) && (s->req.flags & (CF_SHUTR|CF_READ_NULL|CF_READ_ERROR)))
3516 act_flags |= ACT_FLAG_FINAL;
Willy Tarreau39458682015-09-27 10:33:15 +0200[diff] [blame]3517
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3518 switch (rule->action_ptr(rule, px, s->sess, s, act_flags)) {
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3519 case ACT_RET_ERR:
3520 case ACT_RET_CONT:
3521 break;
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3522 case ACT_RET_STOP:
3523 return HTTP_RULE_RES_DONE;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3524 case ACT_RET_YIELD:
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3525 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3526 return HTTP_RULE_RES_YIELD;
3527 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3528 break;
3529
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3530 case ACT_ACTION_TRK_SC0 ... ACT_ACTION_TRK_SCMAX:
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3531 /* Note: only the first valid tracking parameter of each
3532 * applies.
3533 */
3534
3535 if (stkctr_entry(&s->stkctr[http_req_trk_idx(rule->action)]) == NULL) {
3536 struct stktable *t;
3537 struct stksess *ts;
3538 struct stktable_key *key;
3539 void *ptr;
3540
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]3541 t = rule->arg.trk_ctr.table.t;
3542 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]3543
3544 if (key && (ts = stktable_get_entry(t, key))) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3545 stream_track_stkctr(&s->stkctr[http_req_trk_idx(rule->action)], t, ts);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3546
3547 /* let's count a new HTTP request as it's the first time we do it */
3548 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT);
3549 if (ptr)
3550 stktable_data_cast(ptr, http_req_cnt)++;
3551
3552 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE);
3553 if (ptr)
3554 update_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
3555 t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1);
3556
3557 stkctr_set_flags(&s->stkctr[http_req_trk_idx(rule->action)], STKCTR_TRACK_CONTENT);
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3558 if (sess->fe != s->be)
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3559 stkctr_set_flags(&s->stkctr[http_req_trk_idx(rule->action)], STKCTR_TRACK_BACKEND);
3560 }
3561 }
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3562 break;
3563
Thierry FOURNIER22e49012015-08-05 19:13:48 +0200[diff] [blame]3564 /* other flags exists, but normaly, they never be matched. */
3565 default:
3566 break;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3567 }
3568 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3569
3570 /* we reached the end of the rules, nothing to report */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3571 return HTTP_RULE_RES_CONT;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3572}
3573
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3574
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3575/* Executes the http-response rules <rules> for stream <s> and proxy <px>. It
3576 * returns one of 5 possible statuses: HTTP_RULE_RES_CONT, HTTP_RULE_RES_STOP,
3577 * HTTP_RULE_RES_DONE, HTTP_RULE_RES_YIELD, or HTTP_RULE_RES_BADREQ. If *CONT
3578 * is returned, the process can continue the evaluation of next rule list. If
3579 * *STOP or *DONE is returned, the process must stop the evaluation. If *BADREQ
3580 * is returned, it means the operation could not be processed and a server error
3581 * must be returned. It may set the TX_SVDENY on txn->flags if it encounters a
3582 * deny rule. If *YIELD is returned, the caller must call again the function
3583 * with the same context.
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3584 */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3585static enum rule_result
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3586http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s)
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3587{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3588 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3589 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3590 struct connection *cli_conn;
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]3591 struct act_rule *rule;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3592 struct hdr_ctx ctx;
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3593 int act_flags = 0;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3594
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3595 /* If "the current_rule_list" match the executed rule list, we are in
3596 * resume condition. If a resume is needed it is always in the action
3597 * and never in the ACL or converters. In this case, we initialise the
3598 * current rule, and go to the action execution point.
3599 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3600 if (s->current_rule) {
3601 rule = s->current_rule;
3602 s->current_rule = NULL;
3603 if (s->current_rule_list == rules)
3604 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3605 }
3606 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3607
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3608 list_for_each_entry(rule, rules, list) {
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3609
3610 /* check optional condition */
3611 if (rule->cond) {
3612 int ret;
3613
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3614 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]3615 ret = acl_pass(ret);
3616
3617 if (rule->cond->pol == ACL_COND_UNLESS)
3618 ret = !ret;
3619
3620 if (!ret) /* condition not matched */
3621 continue;
3622 }
3623
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3624 act_flags |= ACT_FLAG_FIRST;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3625resume_execution:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3626 switch (rule->action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3627 case ACT_ACTION_ALLOW:
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3628 return HTTP_RULE_RES_STOP; /* "allow" rules are OK */
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3629
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3630 case ACT_ACTION_DENY:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3631 txn->flags |= TX_SVDENY;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3632 return HTTP_RULE_RES_STOP;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3633
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3634 case ACT_HTTP_SET_NICE:
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3635 s->task->nice = rule->arg.nice;
3636 break;
3637
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3638 case ACT_HTTP_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3639 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Vincent Bernat6e615892016-05-18 16:17:44 +0200[diff] [blame]3640 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]3641 break;
3642
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3643 case ACT_HTTP_SET_MARK:
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3644#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3645 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3646 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]3647#endif
3648 break;
3649
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3650 case ACT_HTTP_SET_LOGL:
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3651 s->logs.level = rule->arg.loglevel;
3652 break;
3653
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3654 case ACT_HTTP_REPLACE_HDR:
3655 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3656 if (http_transform_header(s, &txn->rsp, rule->arg.hdr_add.name,
3657 rule->arg.hdr_add.name_len,
3658 &rule->arg.hdr_add.fmt,
3659 &rule->arg.hdr_add.re, rule->action))
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3660 return HTTP_RULE_RES_STOP; /* note: we should report an error here */
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3661 break;
3662
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3663 case ACT_HTTP_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3664 ctx.idx = 0;
3665 /* remove all occurrences of the header */
3666 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3667 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3668 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3669 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3670 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3671
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3672 case ACT_HTTP_SET_HDR:
3673 case ACT_HTTP_ADD_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3674 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3675 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3676 trash.len = rule->arg.hdr_add.name_len;
3677 trash.str[trash.len++] = ':';
3678 trash.str[trash.len++] = ' ';
3679 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]3680
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3681 if (rule->action == ACT_HTTP_SET_HDR) {
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3682 /* remove all occurrences of the header */
3683 ctx.idx = 0;
3684 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3685 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3686 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3687 }
3688 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3689 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3690 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3691
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3692 case ACT_HTTP_DEL_ACL:
3693 case ACT_HTTP_DEL_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3694 struct pat_ref *ref;
3695 char *key;
3696 int len;
3697
3698 /* collect reference */
3699 ref = pat_ref_lookup(rule->arg.map.ref);
3700 if (!ref)
3701 continue;
3702
3703 /* collect key */
3704 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3705 key = trash.str;
3706 key[len] = '\0';
3707
3708 /* perform update */
3709 /* returned code: 1=ok, 0=ko */
3710 pat_ref_delete(ref, key);
3711
3712 break;
3713 }
3714
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3715 case ACT_HTTP_ADD_ACL: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3716 struct pat_ref *ref;
3717 char *key;
3718 struct chunk *trash_key;
3719 int len;
3720
3721 trash_key = get_trash_chunk();
3722
3723 /* collect reference */
3724 ref = pat_ref_lookup(rule->arg.map.ref);
3725 if (!ref)
3726 continue;
3727
3728 /* collect key */
3729 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3730 key = trash_key->str;
3731 key[len] = '\0';
3732
3733 /* perform update */
3734 /* check if the entry already exists */
3735 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3736 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3737
3738 break;
3739 }
3740
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3741 case ACT_HTTP_SET_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3742 struct pat_ref *ref;
3743 char *key, *value;
3744 struct chunk *trash_key, *trash_value;
3745 int len;
3746
3747 trash_key = get_trash_chunk();
3748 trash_value = get_trash_chunk();
3749
3750 /* collect reference */
3751 ref = pat_ref_lookup(rule->arg.map.ref);
3752 if (!ref)
3753 continue;
3754
3755 /* collect key */
3756 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3757 key = trash_key->str;
3758 key[len] = '\0';
3759
3760 /* collect value */
3761 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3762 value = trash_value->str;
3763 value[len] = '\0';
3764
3765 /* perform update */
3766 if (pat_ref_find_elt(ref, key) != NULL)
3767 /* update entry if it exists */
3768 pat_ref_set(ref, key, value, NULL);
3769 else
3770 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3771 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3772
3773 break;
3774 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3775
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3776 case ACT_HTTP_REDIR:
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3777 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3778 return HTTP_RULE_RES_BADREQ;
3779 return HTTP_RULE_RES_DONE;
3780
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3781 case ACT_CUSTOM:
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3782 if ((px->options & PR_O_ABRT_CLOSE) && (s->req.flags & (CF_SHUTR|CF_READ_NULL|CF_READ_ERROR)))
3783 act_flags |= ACT_FLAG_FINAL;
Willy Tarreau39458682015-09-27 10:33:15 +0200[diff] [blame]3784
Willy Tarreauacc98002015-09-27 23:34:39 +0200[diff] [blame]3785 switch (rule->action_ptr(rule, px, s->sess, s, act_flags)) {
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3786 case ACT_RET_ERR:
3787 case ACT_RET_CONT:
3788 break;
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]3789 case ACT_RET_STOP:
3790 return HTTP_RULE_RES_STOP;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]3791 case ACT_RET_YIELD:
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3792 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3793 return HTTP_RULE_RES_YIELD;
3794 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3795 break;
3796
Thierry FOURNIER22e49012015-08-05 19:13:48 +0200[diff] [blame]3797 /* other flags exists, but normaly, they never be matched. */
3798 default:
3799 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3800 }
3801 }
3802
3803 /* we reached the end of the rules, nothing to report */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3804 return HTTP_RULE_RES_CONT;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3805}
3806
3807
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3808/* Perform an HTTP redirect based on the information in <rule>. The function
3809 * returns non-zero on success, or zero in case of a, irrecoverable error such
3810 * as too large a request to build a valid response.
3811 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3812static 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]3813{
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3814 struct http_msg *req = &txn->req;
3815 struct http_msg *res = &txn->rsp;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3816 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3817 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3818
3819 /* build redirect message */
3820 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3821 case 308:
3822 msg_fmt = HTTP_308;
3823 break;
3824 case 307:
3825 msg_fmt = HTTP_307;
3826 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3827 case 303:
3828 msg_fmt = HTTP_303;
3829 break;
3830 case 301:
3831 msg_fmt = HTTP_301;
3832 break;
3833 case 302:
3834 default:
3835 msg_fmt = HTTP_302;
3836 break;
3837 }
3838
3839 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3840 return 0;
3841
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3842 location = trash.str + trash.len;
3843
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3844 switch(rule->type) {
3845 case REDIRECT_TYPE_SCHEME: {
3846 const char *path;
3847 const char *host;
3848 struct hdr_ctx ctx;
3849 int pathlen;
3850 int hostlen;
3851
3852 host = "";
3853 hostlen = 0;
3854 ctx.idx = 0;
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3855 if (http_find_header2("Host", 4, req->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3856 host = ctx.line + ctx.val;
3857 hostlen = ctx.vlen;
3858 }
3859
3860 path = http_get_path(txn);
3861 /* build message using path */
3862 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3863 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]3864 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3865 int qs = 0;
3866 while (qs < pathlen) {
3867 if (path[qs] == '?') {
3868 pathlen = qs;
3869 break;
3870 }
3871 qs++;
3872 }
3873 }
3874 } else {
3875 path = "/";
3876 pathlen = 1;
3877 }
3878
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3879 if (rule->rdr_str) { /* this is an old "redirect" rule */
3880 /* check if we can add scheme + "://" + host + path */
3881 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3882 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3883
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3884 /* add scheme */
3885 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3886 trash.len += rule->rdr_len;
3887 }
3888 else {
3889 /* add scheme with executing log format */
3890 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]3891
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3892 /* check if we can add scheme + "://" + host + path */
3893 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
3894 return 0;
3895 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3896 /* add "://" */
3897 memcpy(trash.str + trash.len, "://", 3);
3898 trash.len += 3;
3899
3900 /* add host */
3901 memcpy(trash.str + trash.len, host, hostlen);
3902 trash.len += hostlen;
3903
3904 /* add path */
3905 memcpy(trash.str + trash.len, path, pathlen);
3906 trash.len += pathlen;
3907
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3908 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3909 if (trash.len && trash.str[trash.len - 1] != '/' &&
3910 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3911 if (trash.len > trash.size - 5)
3912 return 0;
3913 trash.str[trash.len] = '/';
3914 trash.len++;
3915 }
3916
3917 break;
3918 }
3919 case REDIRECT_TYPE_PREFIX: {
3920 const char *path;
3921 int pathlen;
3922
3923 path = http_get_path(txn);
3924 /* build message using path */
3925 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3926 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]3927 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3928 int qs = 0;
3929 while (qs < pathlen) {
3930 if (path[qs] == '?') {
3931 pathlen = qs;
3932 break;
3933 }
3934 qs++;
3935 }
3936 }
3937 } else {
3938 path = "/";
3939 pathlen = 1;
3940 }
3941
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3942 if (rule->rdr_str) { /* this is an old "redirect" rule */
3943 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
3944 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3945
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3946 /* add prefix. Note that if prefix == "/", we don't want to
3947 * add anything, otherwise it makes it hard for the user to
3948 * configure a self-redirection.
3949 */
3950 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
3951 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3952 trash.len += rule->rdr_len;
3953 }
3954 }
3955 else {
3956 /* add prefix with executing log format */
3957 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
3958
3959 /* Check length */
3960 if (trash.len + pathlen > trash.size - 4)
3961 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3962 }
3963
3964 /* add path */
3965 memcpy(trash.str + trash.len, path, pathlen);
3966 trash.len += pathlen;
3967
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3968 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3969 if (trash.len && trash.str[trash.len - 1] != '/' &&
3970 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3971 if (trash.len > trash.size - 5)
3972 return 0;
3973 trash.str[trash.len] = '/';
3974 trash.len++;
3975 }
3976
3977 break;
3978 }
3979 case REDIRECT_TYPE_LOCATION:
3980 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3981 if (rule->rdr_str) { /* this is an old "redirect" rule */
3982 if (trash.len + rule->rdr_len > trash.size - 4)
3983 return 0;
3984
3985 /* add location */
3986 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3987 trash.len += rule->rdr_len;
3988 }
3989 else {
3990 /* add location with executing log format */
3991 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]3992
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3993 /* Check left length */
3994 if (trash.len > trash.size - 4)
3995 return 0;
3996 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3997 break;
3998 }
3999
4000 if (rule->cookie_len) {
4001 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
4002 trash.len += 14;
4003 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
4004 trash.len += rule->cookie_len;
4005 memcpy(trash.str + trash.len, "\r\n", 2);
4006 trash.len += 2;
4007 }
4008
4009 /* add end of headers and the keep-alive/close status.
4010 * We may choose to set keep-alive if the Location begins
4011 * with a slash, because the client will come back to the
4012 * same server.
4013 */
4014 txn->status = rule->code;
4015 /* let's log the request time */
4016 s->logs.tv_request = now;
4017
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4018 if (*location == '/' &&
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4019 (req->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau2de8a502015-05-28 17:23:54 +0200[diff] [blame]4020 ((!(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]4021 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
4022 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
4023 /* keep-alive possible */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4024 if (!(req->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4025 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4026 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
4027 trash.len += 30;
4028 } else {
4029 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
4030 trash.len += 24;
4031 }
4032 }
4033 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
4034 trash.len += 4;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]4035 FLT_STRM_CB(s, flt_http_reply(s, txn->status, &trash));
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4036 bo_inject(res->chn, trash.str, trash.len);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4037 /* "eat" the request */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4038 bi_fast_delete(req->chn->buf, req->sov);
4039 req->next -= req->sov;
4040 req->sov = 0;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4041 s->req.analysers = AN_REQ_HTTP_XFER_BODY | (s->req.analysers & AN_FLT_END);
4042 s->res.analysers = AN_RES_HTTP_XFER_BODY | (s->req.analysers & AN_FLT_END);
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4043 req->msg_state = HTTP_MSG_CLOSED;
4044 res->msg_state = HTTP_MSG_DONE;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]4045 /* Trim any possible response */
4046 res->chn->buf->i = 0;
4047 res->next = res->sov = 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4048 } else {
4049 /* keep-alive not possible */
4050 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4051 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
4052 trash.len += 29;
4053 } else {
4054 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
4055 trash.len += 23;
4056 }
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4057 http_reply_and_close(s, txn->status, &trash);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4058 req->chn->analysers &= AN_FLT_END;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4059 }
4060
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4061 if (!(s->flags & SF_ERR_MASK))
4062 s->flags |= SF_ERR_LOCAL;
4063 if (!(s->flags & SF_FINST_MASK))
4064 s->flags |= SF_FINST_R;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4065
4066 return 1;
4067}
4068
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4069/* This stream analyser runs all HTTP request processing which is common to
4070 * frontends and backends, which means blocking ACLs, filters, connection-close,
4071 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4072 * 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]4073 * either needs more data or wants to immediately abort the request (eg: deny,
4074 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4075 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4076int 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]4077{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4078 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4079 struct http_txn *txn = s->txn;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4080 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4081 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]4082 struct cond_wordlist *wl;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4083 enum rule_result verdict;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4084 int deny_status = HTTP_ERR_403;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4085
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4086 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4087 /* we need more data */
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4088 goto return_prx_yield;
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4089 }
4090
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4091 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]4092 now_ms, __FUNCTION__,
4093 s,
4094 req,
4095 req->rex, req->wex,
4096 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4097 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4098 req->analysers);
4099
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4100 /* just in case we have some per-backend tracking */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4101 stream_inc_be_http_req_ctr(s);
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4102
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4103 /* evaluate http-request rules */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4104 if (!LIST_ISEMPTY(&px->http_req_rules)) {
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4105 verdict = http_req_get_intercept_rule(px, &px->http_req_rules, s, &deny_status);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]4106
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4107 switch (verdict) {
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4108 case HTTP_RULE_RES_YIELD: /* some data miss, call the function later. */
4109 goto return_prx_yield;
4110
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4111 case HTTP_RULE_RES_CONT:
4112 case HTTP_RULE_RES_STOP: /* nothing to do */
4113 break;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4114
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4115 case HTTP_RULE_RES_DENY: /* deny or tarpit */
4116 if (txn->flags & TX_CLTARPIT)
4117 goto tarpit;
4118 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4119
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4120 case HTTP_RULE_RES_ABRT: /* abort request, response already sent. Eg: auth */
4121 goto return_prx_cond;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4122
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4123 case HTTP_RULE_RES_DONE: /* OK, but terminate request processing (eg: redirect) */
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4124 goto done;
4125
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4126 case HTTP_RULE_RES_BADREQ: /* failed with a bad request */
4127 goto return_bad_req;
4128 }
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4129 }
4130
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4131 /* OK at this stage, we know that the request was accepted according to
4132 * the http-request rules, we can check for the stats. Note that the
4133 * URI is detected *before* the req* rules in order not to be affected
4134 * by a possible reqrep, while they are processed *after* so that a
4135 * reqdeny can still block them. This clearly needs to change in 1.6!
4136 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4137 if (stats_check_uri(&s->si[1], txn, px)) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4138 s->target = &http_stats_applet.obj_type;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4139 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target)))) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4140 txn->status = 500;
4141 s->logs.tv_request = now;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4142 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]4143
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4144 if (!(s->flags & SF_ERR_MASK))
4145 s->flags |= SF_ERR_RESOURCE;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4146 goto return_prx_cond;
4147 }
4148
4149 /* parse the whole stats request and extract the relevant information */
4150 http_handle_stats(s, req);
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4151 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]4152 /* not all actions implemented: deny, allow, auth */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4153
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4154 if (verdict == HTTP_RULE_RES_DENY) /* stats http-request deny */
4155 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4156
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4157 if (verdict == HTTP_RULE_RES_ABRT) /* stats auth / stats http-request auth */
4158 goto return_prx_cond;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]4159 }
4160
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4161 /* evaluate the req* rules except reqadd */
4162 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]4163 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4164 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4165
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4166 if (txn->flags & TX_CLDENY)
4167 goto deny;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]4168
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4169 if (txn->flags & TX_CLTARPIT)
4170 goto tarpit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4171 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4172
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4173 /* add request headers from the rule sets in the same order */
4174 list_for_each_entry(wl, &px->req_add, list) {
4175 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4176 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]4177 ret = acl_pass(ret);
4178 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
4179 ret = !ret;
4180 if (!ret)
4181 continue;
4182 }
4183
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4184 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4185 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]4186 }
4187
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4188
4189 /* Proceed with the stats now. */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]4190 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]4191 /* process the stats request now */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4192 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
4193 sess->fe->fe_counters.intercepted_req++;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4194
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4195 if (!(s->flags & SF_ERR_MASK)) // this is not really an error but it is
4196 s->flags |= SF_ERR_LOCAL; // to mark that it comes from the proxy
4197 if (!(s->flags & SF_FINST_MASK))
4198 s->flags |= SF_FINST_R;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4199
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4200 /* 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]4201 req->analysers &= (AN_REQ_HTTP_BODY | AN_FLT_HTTP_HDRS | AN_FLT_END);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4202 req->analysers &= ~AN_FLT_XFER_DATA;
4203 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4204 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4205 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4206
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4207 /* check whether we have some ACLs set to redirect this request */
4208 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4209 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4210 int ret;
4211
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4212 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]4213 ret = acl_pass(ret);
4214 if (rule->cond->pol == ACL_COND_UNLESS)
4215 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4216 if (!ret)
4217 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4218 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4219 if (!http_apply_redirect_rule(rule, s, txn))
4220 goto return_bad_req;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4221 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4222 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4223
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4224 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
4225 * If this happens, then the data will not come immediately, so we must
4226 * send all what we have without waiting. Note that due to the small gain
4227 * 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]4228 * 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]4229 * itself once used.
4230 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4231 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4232
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4233 done: /* done with this analyser, continue with next ones that the calling
4234 * points will have set, if any.
4235 */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4236 req->analyse_exp = TICK_ETERNITY;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4237 done_without_exp: /* done with this analyser, but dont reset the analyse_exp. */
4238 req->analysers &= ~an_bit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4239 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4240
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4241 tarpit:
4242 /* When a connection is tarpitted, we use the tarpit timeout,
4243 * which may be the same as the connect timeout if unspecified.
4244 * If unset, then set it to zero because we really want it to
4245 * eventually expire. We build the tarpit as an analyser.
4246 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4247 channel_erase(&s->req);
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4248
4249 /* wipe the request out so that we can drop the connection early
4250 * if the client closes first.
4251 */
4252 channel_dont_connect(req);
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]4253
4254 /* Allow cookie logging
4255 */
4256 if (s->be->cookie_name || sess->fe->capture_name)
4257 manage_client_side_cookies(s, req);
4258
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4259 req->analysers &= AN_FLT_END; /* remove switching rules etc... */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4260 req->analysers |= AN_REQ_HTTP_TARPIT;
4261 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
4262 if (!req->analyse_exp)
4263 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4264 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4265 sess->fe->fe_counters.denied_req++;
4266 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4267 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4268 if (sess->listener->counters)
4269 sess->listener->counters->denied_req++;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4270 goto done_without_exp;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4271
4272 deny: /* this request was blocked (denied) */
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]4273
4274 /* Allow cookie logging
4275 */
4276 if (s->be->cookie_name || sess->fe->capture_name)
4277 manage_client_side_cookies(s, req);
4278
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4279 txn->flags |= TX_CLDENY;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4280 txn->status = http_err_codes[deny_status];
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4281 s->logs.tv_request = now;
Willy Tarreau58727ec2016-05-25 16:23:59 +0200[diff] [blame]4282 http_reply_and_close(s, txn->status, http_error_message(s, deny_status));
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4283 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4284 sess->fe->fe_counters.denied_req++;
4285 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4286 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4287 if (sess->listener->counters)
4288 sess->listener->counters->denied_req++;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4289 goto return_prx_cond;
4290
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4291 return_bad_req:
4292 /* We centralize bad requests processing here */
4293 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
4294 /* we detected a parsing error. We want to archive this request
4295 * in the dedicated proxy area for later troubleshooting.
4296 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4297 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]4298 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4299
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4300 txn->req.msg_state = HTTP_MSG_ERROR;
4301 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4302 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]4303
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4304 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4305 if (sess->listener->counters)
4306 sess->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4307
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4308 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4309 if (!(s->flags & SF_ERR_MASK))
4310 s->flags |= SF_ERR_PRXCOND;
4311 if (!(s->flags & SF_FINST_MASK))
4312 s->flags |= SF_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]4313
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4314 req->analysers &= AN_FLT_END;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4315 req->analyse_exp = TICK_ETERNITY;
4316 return 0;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4317
4318 return_prx_yield:
4319 channel_dont_connect(req);
4320 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4321}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4322
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4323/* This function performs all the processing enabled for the current request.
4324 * It returns 1 if the processing can continue on next analysers, or zero if it
4325 * needs more data, encounters an error, or wants to immediately abort the
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4326 * request. It relies on buffers flags, and updates s->req.analysers.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4327 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4328int http_process_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4329{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4330 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4331 struct http_txn *txn = s->txn;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4332 struct http_msg *msg = &txn->req;
Willy Tarreauee335e62015-04-21 18:15:13 +0200[diff] [blame]4333 struct connection *cli_conn = objt_conn(strm_sess(s)->origin);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4334
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4335 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4336 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4337 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4338 return 0;
4339 }
4340
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4341 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]4342 now_ms, __FUNCTION__,
4343 s,
4344 req,
4345 req->rex, req->wex,
4346 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4347 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4348 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4349
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4350 /*
4351 * Right now, we know that we have processed the entire headers
4352 * and that unwanted requests have been filtered out. We can do
4353 * whatever we want with the remaining request. Also, now we
4354 * may have separate values for ->fe, ->be.
4355 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4356
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4357 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4358 * If HTTP PROXY is set we simply get remote server address parsing
4359 * incoming request. Note that this requires that a connection is
4360 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4361 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4362 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SF_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4363 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4364 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4365
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]4366 /* Note that for now we don't reuse existing proxy connections */
Willy Tarreau973a5422015-08-05 21:47:23 +0200[diff] [blame]4367 if (unlikely((conn = si_alloc_conn(&s->si[1])) == NULL)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4368 txn->req.msg_state = HTTP_MSG_ERROR;
4369 txn->status = 500;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4370 req->analysers &= AN_FLT_END;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4371 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_500));
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4372
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4373 if (!(s->flags & SF_ERR_MASK))
4374 s->flags |= SF_ERR_RESOURCE;
4375 if (!(s->flags & SF_FINST_MASK))
4376 s->flags |= SF_FINST_R;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4377
4378 return 0;
4379 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4380
4381 path = http_get_path(txn);
4382 url2sa(req->buf->p + msg->sl.rq.u,
4383 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]4384 &conn->addr.to, NULL);
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4385 /* if the path was found, we have to remove everything between
4386 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
4387 * found, we need to replace from req->buf->p + msg->sl.rq.u for
4388 * u_l characters by a single "/".
4389 */
4390 if (path) {
4391 char *cur_ptr = req->buf->p;
4392 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4393 int delta;
4394
4395 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
4396 http_msg_move_end(&txn->req, delta);
4397 cur_end += delta;
4398 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4399 goto return_bad_req;
4400 }
4401 else {
4402 char *cur_ptr = req->buf->p;
4403 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4404 int delta;
4405
4406 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
4407 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
4408 http_msg_move_end(&txn->req, delta);
4409 cur_end += delta;
4410 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4411 goto return_bad_req;
4412 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4413 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4414
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4415 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4416 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4417 * Note that doing so might move headers in the request, but
4418 * the fields will stay coherent and the URI will not move.
4419 * This should only be performed in the backend.
4420 */
Bertrand Paquet83a2c3d2016-04-06 11:58:31 +0200[diff] [blame]4421 if (s->be->cookie_name || sess->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4422 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]4423
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4424 /* add unique-id if "header-unique-id" is specified */
4425
Thierry Fournierf4011dd2016-03-29 17:23:51 +0200[diff] [blame]4426 if (!LIST_ISEMPTY(&sess->fe->format_unique_id) && !s->unique_id) {
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4427 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
4428 goto return_bad_req;
4429 s->unique_id[0] = '\0';
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4430 build_logline(s, s->unique_id, UNIQUEID_LEN, &sess->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4431 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4432
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4433 if (sess->fe->header_unique_id && s->unique_id) {
4434 chunk_printf(&trash, "%s: %s", sess->fe->header_unique_id, s->unique_id);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4435 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4436 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4437 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]4438 goto return_bad_req;
4439 }
4440
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4441 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4442 * 9: add X-Forwarded-For if either the frontend or the backend
4443 * asks for it.
4444 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4445 if ((sess->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4446 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4447 if (!((sess->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
4448 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : sess->fe->fwdfor_hdr_name,
4449 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]4450 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4451 /* The header is set to be added only if none is present
4452 * and we found it, so don't do anything.
4453 */
4454 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4455 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4456 /* Add an X-Forwarded-For header unless the source IP is
4457 * in the 'except' network range.
4458 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4459 if ((!sess->fe->except_mask.s_addr ||
4460 (((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr & sess->fe->except_mask.s_addr)
4461 != sess->fe->except_net.s_addr) &&
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4462 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4463 (((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]4464 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4465 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4466 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4467 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4468
4469 /* Note: we rely on the backend to get the header name to be used for
4470 * x-forwarded-for, because the header is really meant for the backends.
4471 * However, if the backend did not specify any option, we have to rely
4472 * on the frontend's header name.
4473 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4474 if (s->be->fwdfor_hdr_len) {
4475 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4476 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4477 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4478 len = sess->fe->fwdfor_hdr_len;
4479 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4480 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4481 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]4482
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4483 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]4484 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4485 }
4486 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4487 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4488 /* FIXME: for the sake of completeness, we should also support
4489 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4490 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4491 int len;
4492 char pn[INET6_ADDRSTRLEN];
4493 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4494 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4495 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4496
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4497 /* Note: we rely on the backend to get the header name to be used for
4498 * x-forwarded-for, because the header is really meant for the backends.
4499 * However, if the backend did not specify any option, we have to rely
4500 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4501 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4502 if (s->be->fwdfor_hdr_len) {
4503 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4504 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4505 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4506 len = sess->fe->fwdfor_hdr_len;
4507 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4508 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4509 len += snprintf(trash.str + len, trash.size - len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4510
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4511 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]4512 goto return_bad_req;
4513 }
4514 }
4515
4516 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4517 * 10: add X-Original-To if either the frontend or the backend
4518 * asks for it.
4519 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4520 if ((sess->fe->options | s->be->options) & PR_O_ORGTO) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4521
4522 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4523 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4524 /* Add an X-Original-To header unless the destination IP is
4525 * in the 'except' network range.
4526 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4527 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4528
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4529 if (cli_conn->addr.to.ss_family == AF_INET &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4530 ((!sess->fe->except_mask_to.s_addr ||
4531 (((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr.s_addr & sess->fe->except_mask_to.s_addr)
4532 != sess->fe->except_to.s_addr) &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4533 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4534 (((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]4535 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4536 int len;
4537 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4538 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4539
4540 /* Note: we rely on the backend to get the header name to be used for
4541 * x-original-to, because the header is really meant for the backends.
4542 * However, if the backend did not specify any option, we have to rely
4543 * on the frontend's header name.
4544 */
4545 if (s->be->orgto_hdr_len) {
4546 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4547 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4548 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4549 len = sess->fe->orgto_hdr_len;
4550 memcpy(trash.str, sess->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4551 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4552 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]4553
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4554 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]4555 goto return_bad_req;
4556 }
4557 }
4558 }
4559
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4560 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
4561 * If an "Upgrade" token is found, the header is left untouched in order not to have
4562 * to deal with some servers bugs : some of them fail an Upgrade if anything but
4563 * "Upgrade" is present in the Connection header.
4564 */
4565 if (!(txn->flags & TX_HDR_CONN_UPG) &&
4566 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4567 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4568 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4569 unsigned int want_flags = 0;
4570
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4571 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4572 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4573 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4574 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4575 !((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4576 want_flags |= TX_CON_CLO_SET;
4577 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4578 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4579 ((sess->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4580 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4581 ((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4582 want_flags |= TX_CON_KAL_SET;
4583 }
4584
4585 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4586 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4587 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4588
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4589
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4590 /* If we have no server assigned yet and we're balancing on url_param
4591 * with a POST request, we may be interested in checking the body for
4592 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4593 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4594 if (!(s->flags & (SF_ASSIGNED|SF_DIRECT)) &&
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4595 s->txn->meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4596 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4597 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4598 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4599 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4600
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4601 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4602 req->analysers &= ~AN_FLT_XFER_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4603 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4604#ifdef TCP_QUICKACK
4605 /* We expect some data from the client. Unless we know for sure
4606 * we already have a full request, we have to re-enable quick-ack
4607 * in case we previously disabled it, otherwise we might cause
4608 * the client to delay further data.
4609 */
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4610 if ((sess->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]4611 cli_conn && conn_ctrl_ready(cli_conn) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4612 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4613 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4614 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4615#endif
4616 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4617
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4618 /*************************************************************
4619 * OK, that's finished for the headers. We have done what we *
4620 * could. Let's switch to the DATA state. *
4621 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4622 req->analyse_exp = TICK_ETERNITY;
4623 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4624
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4625 /* if the server closes the connection, we want to immediately react
4626 * and close the socket to save packets and syscalls.
4627 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4628 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4629 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4630
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4631 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4632 /* OK let's go on with the BODY now */
4633 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4634
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4635 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4636 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4637 /* we detected a parsing error. We want to archive this request
4638 * in the dedicated proxy area for later troubleshooting.
4639 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4640 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]4641 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4642
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4643 txn->req.msg_state = HTTP_MSG_ERROR;
4644 txn->status = 400;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4645 req->analysers &= AN_FLT_END;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4646 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]4647
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4648 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4649 if (sess->listener->counters)
4650 sess->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4651
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4652 if (!(s->flags & SF_ERR_MASK))
4653 s->flags |= SF_ERR_PRXCOND;
4654 if (!(s->flags & SF_FINST_MASK))
4655 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4656 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4657}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4658
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4659/* This function is an analyser which processes the HTTP tarpit. It always
4660 * returns zero, at the beginning because it prevents any other processing
4661 * from occurring, and at the end because it terminates the request.
4662 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4663int http_process_tarpit(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4664{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4665 struct http_txn *txn = s->txn;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4666
4667 /* This connection is being tarpitted. The CLIENT side has
4668 * already set the connect expiration date to the right
4669 * timeout. We just have to check that the client is still
4670 * there and that the timeout has not expired.
4671 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4672 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4673 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4674 !tick_is_expired(req->analyse_exp, now_ms))
4675 return 0;
4676
4677 /* We will set the queue timer to the time spent, just for
4678 * logging purposes. We fake a 500 server error, so that the
4679 * attacker will not suspect his connection has been tarpitted.
4680 * It will not cause trouble to the logs because we can exclude
4681 * the tarpitted connections by filtering on the 'PT' status flags.
4682 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4683 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4684
4685 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4686 if (!(req->flags & CF_READ_ERROR))
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4687 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4688
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4689 req->analysers &= AN_FLT_END;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4690 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4691
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4692 if (!(s->flags & SF_ERR_MASK))
4693 s->flags |= SF_ERR_PRXCOND;
4694 if (!(s->flags & SF_FINST_MASK))
4695 s->flags |= SF_FINST_T;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4696 return 0;
4697}
4698
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4699/* This function is an analyser which waits for the HTTP request body. It waits
4700 * for either the buffer to be full, or the full advertised contents to have
4701 * reached the buffer. It must only be called after the standard HTTP request
4702 * processing has occurred, because it expects the request to be parsed and will
4703 * look for the Expect header. It may send a 100-Continue interim response. It
4704 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
4705 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
4706 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4707 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4708int http_wait_for_request_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4709{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4710 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4711 struct http_txn *txn = s->txn;
4712 struct http_msg *msg = &s->txn->req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4713
4714 /* We have to parse the HTTP request body to find any required data.
4715 * "balance url_param check_post" should have been the only way to get
4716 * into this. We were brought here after HTTP header analysis, so all
4717 * related structures are ready.
4718 */
4719
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4720 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
4721 /* This is the first call */
4722 if (msg->msg_state < HTTP_MSG_BODY)
4723 goto missing_data;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4724
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4725 if (msg->msg_state < HTTP_MSG_100_SENT) {
4726 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4727 * send an HTTP/1.1 100 Continue intermediate response.
4728 */
4729 if (msg->flags & HTTP_MSGF_VER_11) {
4730 struct hdr_ctx ctx;
4731 ctx.idx = 0;
4732 /* Expect is allowed in 1.1, look for it */
4733 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
4734 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4735 bo_inject(&s->res, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4736 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4737 }
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4738 msg->msg_state = HTTP_MSG_100_SENT;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4739 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4740
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4741 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4742 * req->buf->p still points to the beginning of the message. We
4743 * must save the body in msg->next because it survives buffer
4744 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4745 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4746 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4747
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4748 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4749 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4750 else
4751 msg->msg_state = HTTP_MSG_DATA;
4752 }
4753
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4754 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
4755 /* We're in content-length mode, we just have to wait for enough data. */
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4756 if (http_body_bytes(msg) < msg->body_len)
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4757 goto missing_data;
4758
4759 /* OK we have everything we need now */
4760 goto http_end;
4761 }
4762
4763 /* OK here we're parsing a chunked-encoded message */
4764
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4765 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4766 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4767 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4768 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4769 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4770 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4771
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4772 if (!ret)
4773 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4774 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4775 stream_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4776 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4777 }
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]4778 msg->next += ret;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4779 msg->msg_state = msg->chunk_len ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4780 }
4781
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4782 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4783 * We have the first data byte is in msg->sov + msg->sol. We're waiting
4784 * for at least a whole chunk or the whole content length bytes after
4785 * msg->sov + msg->sol.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4786 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4787 if (msg->msg_state == HTTP_MSG_TRAILERS)
4788 goto http_end;
4789
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4790 if (http_body_bytes(msg) >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4791 goto http_end;
4792
4793 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4794 /* we get here if we need to wait for more data. If the buffer is full,
4795 * we have the maximum we can expect.
4796 */
4797 if (buffer_full(req->buf, global.tune.maxrewrite))
4798 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4799
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4800 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4801 txn->status = 408;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4802 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4803
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4804 if (!(s->flags & SF_ERR_MASK))
4805 s->flags |= SF_ERR_CLITO;
4806 if (!(s->flags & SF_FINST_MASK))
4807 s->flags |= SF_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4808 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4809 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4810
4811 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4812 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4813 /* Not enough data. We'll re-use the http-request
4814 * timeout here. Ideally, we should set the timeout
4815 * relative to the accept() date. We just set the
4816 * request timeout once at the beginning of the
4817 * request.
4818 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4819 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4820 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4821 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4822 return 0;
4823 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4824
4825 http_end:
4826 /* The situation will not evolve, so let's give up on the analysis. */
4827 s->logs.tv_request = now; /* update the request timer to reflect full request */
4828 req->analysers &= ~an_bit;
4829 req->analyse_exp = TICK_ETERNITY;
4830 return 1;
4831
4832 return_bad_req: /* let's centralize all bad requests */
4833 txn->req.msg_state = HTTP_MSG_ERROR;
4834 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]4835 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4836
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4837 if (!(s->flags & SF_ERR_MASK))
4838 s->flags |= SF_ERR_PRXCOND;
4839 if (!(s->flags & SF_FINST_MASK))
4840 s->flags |= SF_FINST_R;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4841
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4842 return_err_msg:
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4843 req->analysers &= AN_FLT_END;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4844 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4845 if (sess->listener->counters)
4846 sess->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4847 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4848}
4849
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4850/* send a server's name with an outgoing request over an established connection.
4851 * Note: this function is designed to be called once the request has been scheduled
4852 * for being forwarded. This is the reason why it rewinds the buffer before
4853 * proceeding.
4854 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4855int 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]4856
4857 struct hdr_ctx ctx;
4858
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4859 char *hdr_name = be->server_id_hdr_name;
4860 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4861 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4862 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4863 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4864
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4865 ctx.idx = 0;
4866
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]4867 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4868 if (old_o) {
4869 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4870 b_rew(chn->buf, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4871 txn->req.next += old_o;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]4872 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4873 }
4874
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4875 old_i = chn->buf->i;
4876 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]4877 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4878 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4879 }
4880
4881 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4882 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4883 memcpy(hdr_val, hdr_name, hdr_name_len);
4884 hdr_val += hdr_name_len;
4885 *hdr_val++ = ':';
4886 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4887 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4888 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]4889
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4890 if (old_o) {
4891 /* If this was a forwarded request, we must readjust the amount of
4892 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4893 * variations. Note that the current state is >= HTTP_MSG_BODY,
4894 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4895 */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4896 old_o += chn->buf->i - old_i;
4897 b_adv(chn->buf, old_o);
4898 txn->req.next -= old_o;
4899 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4900 }
4901
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4902 return 0;
4903}
4904
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4905/* Terminate current transaction and prepare a new one. This is very tricky
4906 * right now but it works.
4907 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4908void http_end_txn_clean_session(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4909{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4910 int prev_status = s->txn->status;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]4911 struct proxy *fe = strm_fe(s);
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]4912 struct proxy *be = s->be;
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]4913 struct connection *srv_conn;
4914 struct server *srv;
Willy Tarreau449d74a2015-08-05 17:16:33 +0200[diff] [blame]4915 unsigned int prev_flags = s->txn->flags;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4916
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4917 /* FIXME: We need a more portable way of releasing a backend's and a
4918 * server's connections. We need a safer way to reinitialize buffer
4919 * flags. We also need a more accurate method for computing per-request
4920 * data.
4921 */
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]4922 srv_conn = objt_conn(s->si[1].end);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4923
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4924 /* unless we're doing keep-alive, we want to quickly close the connection
4925 * to the server.
4926 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4927 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4928 !si_conn_ready(&s->si[1])) {
4929 s->si[1].flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
4930 si_shutr(&s->si[1]);
4931 si_shutw(&s->si[1]);
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4932 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4933
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4934 if (s->flags & SF_BE_ASSIGNED) {
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]4935 be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4936 if (unlikely(s->srv_conn))
4937 sess_change_server(s, NULL);
4938 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4939
4940 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4941 stream_process_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4942
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4943 if (s->txn->status) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4944 int n;
4945
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4946 n = s->txn->status / 100;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4947 if (n < 1 || n > 5)
4948 n = 0;
4949
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4950 if (fe->mode == PR_MODE_HTTP) {
4951 fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4952 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4953 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]4954 (be->mode == PR_MODE_HTTP)) {
4955 be->be_counters.p.http.rsp[n]++;
4956 be->be_counters.p.http.cum_req++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4957 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4958 }
4959
4960 /* don't count other requests' data */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4961 s->logs.bytes_in -= s->req.buf->i;
4962 s->logs.bytes_out -= s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4963
4964 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4965 if (!LIST_ISEMPTY(&fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4966 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4967 (!(fe->options & PR_O_NULLNOLOG) || s->req.total)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4968 s->do_log(s);
4969 }
4970
Willy Tarreaud713bcc2014-06-25 15:36:04 +0200[diff] [blame]4971 /* stop tracking content-based counters */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4972 stream_stop_content_counters(s);
4973 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +0200[diff] [blame]4974
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4975 s->logs.accept_date = date; /* user-visible date for logging */
4976 s->logs.tv_accept = now; /* corrected date for internal use */
4977 tv_zero(&s->logs.tv_request);
4978 s->logs.t_queue = -1;
4979 s->logs.t_connect = -1;
4980 s->logs.t_data = -1;
4981 s->logs.t_close = 0;
4982 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4983 s->logs.srv_queue_size = 0; /* we will get this number soon */
4984
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4985 s->logs.bytes_in = s->req.total = s->req.buf->i;
4986 s->logs.bytes_out = s->res.total = s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4987
4988 if (s->pend_pos)
4989 pendconn_free(s->pend_pos);
4990
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4991 if (objt_server(s->target)) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4992 if (s->flags & SF_CURR_SESS) {
4993 s->flags &= ~SF_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4994 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4995 }
Willy Tarreau858b1032015-12-07 17:04:59 +0100[diff] [blame]4996 if (may_dequeue_tasks(objt_server(s->target), be))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4997 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4998 }
4999
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5000 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5001
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5002 /* only release our endpoint if we don't intend to reuse the
5003 * connection.
5004 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5005 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5006 !si_conn_ready(&s->si[1])) {
5007 si_release_endpoint(&s->si[1]);
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5008 srv_conn = NULL;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5009 }
5010
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5011 s->si[1].state = s->si[1].prev_state = SI_ST_INI;
5012 s->si[1].err_type = SI_ET_NONE;
5013 s->si[1].conn_retries = 0; /* used for logging too */
5014 s->si[1].exp = TICK_ETERNITY;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5015 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]5016 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);
5017 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]5018 s->flags &= ~(SF_DIRECT|SF_ASSIGNED|SF_ADDR_SET|SF_BE_ASSIGNED|SF_FORCE_PRST|SF_IGNORE_PRST);
5019 s->flags &= ~(SF_CURR_SESS|SF_REDIRECTABLE|SF_SRV_REUSED);
5020 s->flags &= ~(SF_ERR_MASK|SF_FINST_MASK|SF_REDISP);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]5021
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5022 s->txn->meth = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5023 http_reset_txn(s);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5024 s->txn->flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5025
5026 if (prev_status == 401 || prev_status == 407) {
5027 /* In HTTP keep-alive mode, if we receive a 401, we still have
5028 * a chance of being able to send the visitor again to the same
5029 * server over the same connection. This is required by some
5030 * broken protocols such as NTLM, and anyway whenever there is
5031 * an opportunity for sending the challenge to the proper place,
5032 * it's better to do it (at least it helps with debugging).
5033 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5034 s->txn->flags |= TX_PREFER_LAST;
Willy Tarreaubd99d582015-09-02 10:40:43 +0200[diff] [blame]5035 if (srv_conn)
5036 srv_conn->flags |= CO_FL_PRIVATE;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5037 }
5038
Willy Tarreau53f96852016-02-02 18:50:47 +0100[diff] [blame]5039 /* Never ever allow to reuse a connection from a non-reuse backend */
5040 if (srv_conn && (be->options & PR_O_REUSE_MASK) == PR_O_REUSE_NEVR)
5041 srv_conn->flags |= CO_FL_PRIVATE;
5042
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5043 if (fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5044 s->si[1].flags |= SI_FL_INDEP_STR;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5045
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5046 if (fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5047 s->req.flags |= CF_NEVER_WAIT;
5048 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]5049 }
5050
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5051 /* if the request buffer is not empty, it means we're
5052 * about to process another request, so send pending
5053 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5054 * Just don't do this if the buffer is close to be full,
5055 * because the request will wait for it to flush a little
5056 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5057 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5058 if (s->req.buf->i) {
5059 if (s->res.buf->o &&
5060 !buffer_full(s->res.buf, global.tune.maxrewrite) &&
5061 bi_end(s->res.buf) <= s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)
5062 s->res.flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5063 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5064
Willy Tarreau714ea782015-11-25 20:11:11 +0100[diff] [blame]5065 /* we're removing the analysers, we MUST re-enable events detection.
5066 * We don't enable close on the response channel since it's either
5067 * already closed, or in keep-alive with an idle connection handler.
5068 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5069 channel_auto_read(&s->req);
5070 channel_auto_close(&s->req);
5071 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5072
Willy Tarreau1c59bd52015-11-02 20:20:11 +0100[diff] [blame]5073 /* we're in keep-alive with an idle connection, monitor it if not already done */
5074 if (srv_conn && LIST_ISEMPTY(&srv_conn->list)) {
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5075 srv = objt_server(srv_conn->target);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5076 if (!srv)
5077 si_idle_conn(&s->si[1], NULL);
Willy Tarreau53f96852016-02-02 18:50:47 +0100[diff] [blame]5078 else if (srv_conn->flags & CO_FL_PRIVATE)
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5079 si_idle_conn(&s->si[1], &srv->priv_conns);
Willy Tarreau449d74a2015-08-05 17:16:33 +0200[diff] [blame]5080 else if (prev_flags & TX_NOT_FIRST)
5081 /* note: we check the request, not the connection, but
5082 * this is valid for strategies SAFE and AGGR, and in
5083 * case of ALWS, we don't care anyway.
5084 */
5085 si_idle_conn(&s->si[1], &srv->safe_conns);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5086 else
5087 si_idle_conn(&s->si[1], &srv->idle_conns);
Willy Tarreau4320eaa2015-08-05 11:08:30 +0200[diff] [blame]5088 }
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]5089
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5090 if (HAS_FILTERS(s)) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5091 s->req.analysers &= AN_FLT_END;
5092 s->res.analysers &= AN_FLT_END;
5093 }
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5094 else {
5095 s->req.analysers = strm_li(s) ? strm_li(s)->analysers : 0;
5096 s->res.analysers = 0;
5097 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5098}
5099
5100
5101/* This function updates the request state machine according to the response
5102 * state machine and buffer flags. It returns 1 if it changes anything (flag
5103 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5104 * it is only used to find when a request/response couple is complete. Both
5105 * this function and its equivalent should loop until both return zero. It
5106 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5107 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5108int http_sync_req_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5109{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5110 struct channel *chn = &s->req;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5111 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5112 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5113 unsigned int old_state = txn->req.msg_state;
5114
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5115 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
5116 return 0;
5117
5118 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5119 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5120 * We can shut the read side unless we want to abort_on_close,
5121 * or we have a POST request. The issue with POST requests is
5122 * that some browsers still send a CRLF after the request, and
5123 * this CRLF must be read so that it does not remain in the kernel
5124 * buffers, otherwise a close could cause an RST on some systems
5125 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5126 * Note that if we're using keep-alive on the client side, we'd
5127 * rather poll now and keep the polling enabled for the whole
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5128 * stream's life than enabling/disabling it between each
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5129 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5130 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5131 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5132 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5133 !(s->be->options & PR_O_ABRT_CLOSE) &&
5134 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5135 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5136
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5137 /* if the server closes the connection, we want to immediately react
5138 * and close the socket to save packets and syscalls.
5139 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5140 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5141
Willy Tarreau7f876a12015-11-18 11:59:55 +0100[diff] [blame]5142 /* In any case we've finished parsing the request so we must
5143 * disable Nagle when sending data because 1) we're not going
5144 * to shut this side, and 2) the server is waiting for us to
5145 * send pending data.
5146 */
5147 chn->flags |= CF_NEVER_WAIT;
5148
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5149 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
5150 goto wait_other_side;
5151
5152 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
5153 /* The server has not finished to respond, so we
5154 * don't want to move in order not to upset it.
5155 */
5156 goto wait_other_side;
5157 }
5158
5159 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
5160 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5161 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5162 txn->req.msg_state = HTTP_MSG_TUNNEL;
5163 goto wait_other_side;
5164 }
5165
5166 /* When we get here, it means that both the request and the
5167 * response have finished receiving. Depending on the connection
5168 * mode, we'll have to wait for the last bytes to leave in either
5169 * direction, and sometimes for a close to be effective.
5170 */
5171
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5172 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5173 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5174 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
5175 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5176 }
5177 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5178 /* Option forceclose is set, or either side wants to close,
5179 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5180 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5181 * once both states are CLOSED.
5182 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5183 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5184 channel_shutr_now(chn);
5185 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5186 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5187 }
5188 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5189 /* The last possible modes are keep-alive and tunnel. Tunnel mode
5190 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5191 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5192 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
5193 channel_auto_read(chn);
5194 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5195 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5196 }
5197
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5198 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5199 /* if we've just closed an output, let's switch */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5200 s->si[1].flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5201
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5202 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5203 txn->req.msg_state = HTTP_MSG_CLOSING;
5204 goto http_msg_closing;
5205 }
5206 else {
5207 txn->req.msg_state = HTTP_MSG_CLOSED;
5208 goto http_msg_closed;
5209 }
5210 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5211 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5212 }
5213
5214 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
5215 http_msg_closing:
5216 /* nothing else to forward, just waiting for the output buffer
5217 * to be empty and for the shutw_now to take effect.
5218 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5219 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5220 txn->req.msg_state = HTTP_MSG_CLOSED;
5221 goto http_msg_closed;
5222 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5223 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5224 txn->req.msg_state = HTTP_MSG_ERROR;
5225 goto wait_other_side;
5226 }
5227 }
5228
5229 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
5230 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5231 /* see above in MSG_DONE why we only do this in these states */
5232 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5233 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5234 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]5235 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5236 goto wait_other_side;
5237 }
5238
5239 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5240 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5241}
5242
5243
5244/* This function updates the response state machine according to the request
5245 * state machine and buffer flags. It returns 1 if it changes anything (flag
5246 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5247 * it is only used to find when a request/response couple is complete. Both
5248 * this function and its equivalent should loop until both return zero. It
5249 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5250 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5251int http_sync_res_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5252{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5253 struct channel *chn = &s->res;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5254 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5255 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5256 unsigned int old_state = txn->rsp.msg_state;
5257
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5258 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
5259 return 0;
5260
5261 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
5262 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5263 * still monitor the server connection for a possible close
5264 * while the request is being uploaded, so we don't disable
5265 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5266 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5267 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5268
5269 if (txn->req.msg_state == HTTP_MSG_ERROR)
5270 goto wait_other_side;
5271
5272 if (txn->req.msg_state < HTTP_MSG_DONE) {
5273 /* The client seems to still be sending data, probably
5274 * because we got an error response during an upload.
5275 * We have the choice of either breaking the connection
5276 * or letting it pass through. Let's do the later.
5277 */
5278 goto wait_other_side;
5279 }
5280
5281 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
5282 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5283 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5284 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5285 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5286 goto wait_other_side;
5287 }
5288
5289 /* When we get here, it means that both the request and the
5290 * response have finished receiving. Depending on the connection
5291 * mode, we'll have to wait for the last bytes to leave in either
5292 * direction, and sometimes for a close to be effective.
5293 */
5294
5295 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5296 /* Server-close mode : shut read and wait for the request
5297 * side to close its output buffer. The caller will detect
5298 * when we're in DONE and the other is in CLOSED and will
5299 * catch that for the final cleanup.
5300 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5301 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
5302 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5303 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5304 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5305 /* Option forceclose is set, or either side wants to close,
5306 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5307 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5308 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5309 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5310 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5311 channel_shutr_now(chn);
5312 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5313 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5314 }
5315 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5316 /* The last possible modes are keep-alive and tunnel. Tunnel will
5317 * need to forward remaining data. Keep-alive will need to monitor
5318 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5319 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5320 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5321 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5322 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
5323 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5324 }
5325
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5326 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5327 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5328 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5329 txn->rsp.msg_state = HTTP_MSG_CLOSING;
5330 goto http_msg_closing;
5331 }
5332 else {
5333 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5334 goto http_msg_closed;
5335 }
5336 }
5337 goto wait_other_side;
5338 }
5339
5340 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
5341 http_msg_closing:
5342 /* nothing else to forward, just waiting for the output buffer
5343 * to be empty and for the shutw_now to take effect.
5344 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5345 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5346 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5347 goto http_msg_closed;
5348 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5349 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5350 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5351 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5352 if (objt_server(s->target))
5353 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5354 goto wait_other_side;
5355 }
5356 }
5357
5358 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
5359 http_msg_closed:
5360 /* drop any pending data */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5361 channel_truncate(chn);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5362 channel_auto_close(chn);
5363 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5364 goto wait_other_side;
5365 }
5366
5367 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5368 /* We force the response to leave immediately if we're waiting for the
5369 * other side, since there is no pending shutdown to push it out.
5370 */
5371 if (!channel_is_empty(chn))
5372 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5373 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5374}
5375
5376
5377/* Resync the request and response state machines. Return 1 if either state
5378 * changes.
5379 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5380int http_resync_states(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5381{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5382 struct http_txn *txn = s->txn;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5383 int old_req_state = txn->req.msg_state;
5384 int old_res_state = txn->rsp.msg_state;
5385
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5386 http_sync_req_state(s);
5387 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5388 if (!http_sync_res_state(s))
5389 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5390 if (!http_sync_req_state(s))
5391 break;
5392 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]5393
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5394 /* OK, both state machines agree on a compatible state.
5395 * There are a few cases we're interested in :
5396 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
5397 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
5398 * directions, so let's simply disable both analysers.
5399 * - HTTP_MSG_CLOSED on the response only means we must abort the
5400 * request.
5401 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
5402 * with server-close mode means we've completed one request and we
5403 * must re-initialize the server connection.
5404 */
5405
5406 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
5407 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
5408 (txn->req.msg_state == HTTP_MSG_CLOSED &&
5409 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5410 s->req.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5411 channel_auto_close(&s->req);
5412 channel_auto_read(&s->req);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5413 s->res.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5414 channel_auto_close(&s->res);
5415 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5416 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5417 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5418 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->res.flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]5419 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5420 txn->req.msg_state == HTTP_MSG_ERROR) {
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5421 s->res.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5422 channel_auto_close(&s->res);
5423 channel_auto_read(&s->res);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5424 s->req.analysers &= AN_FLT_END;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5425 channel_abort(&s->req);
5426 channel_auto_close(&s->req);
5427 channel_auto_read(&s->req);
5428 channel_truncate(&s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5429 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5430 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
5431 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5432 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5433 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
5434 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
5435 /* server-close/keep-alive: terminate this transaction,
5436 * possibly killing the server connection and reinitialize
Willy Tarreau3de5bd62016-05-02 16:07:07 +0200[diff] [blame]5437 * a fresh-new transaction, but only once we're sure there's
5438 * enough room in the request and response buffer to process
5439 * another request. The request buffer must not hold any
5440 * pending output data and the request buffer must not have
5441 * output data occupying the reserve.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5442 */
Willy Tarreau3de5bd62016-05-02 16:07:07 +0200[diff] [blame]5443 if (s->req.buf->o)
5444 s->req.flags |= CF_WAKE_WRITE;
5445 else if (channel_congested(&s->res))
5446 s->res.flags |= CF_WAKE_WRITE;
5447 else
5448 http_end_txn_clean_session(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5449 }
5450
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5451 return txn->req.msg_state != old_req_state ||
5452 txn->rsp.msg_state != old_res_state;
5453}
5454
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5455/* This function is an analyser which forwards request body (including chunk
5456 * sizes if any). It is called as soon as we must forward, even if we forward
5457 * zero byte. The only situation where it must not be called is when we're in
5458 * tunnel mode and we want to forward till the close. It's used both to forward
5459 * remaining data and to resync after end of body. It expects the msg_state to
5460 * 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]5461 * 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]5462 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5463 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5464 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5465int http_request_forward_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5466{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5467 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5468 struct http_txn *txn = s->txn;
5469 struct http_msg *msg = &s->txn->req;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]5470 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5471
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5472 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5473 return 0;
5474
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5475 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]5476 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5477 /* Output closed while we were sending data. We must abort and
5478 * wake the other side up.
5479 */
5480 msg->msg_state = HTTP_MSG_ERROR;
5481 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5482 return 1;
5483 }
5484
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5485 /* Note that we don't have to send 100-continue back because we don't
5486 * need the data to complete our job, and it's up to the server to
5487 * decide whether to return 100, 417 or anything else in return of
5488 * an "Expect: 100-continue" header.
5489 */
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5490 if (msg->msg_state == HTTP_MSG_BODY) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5491 msg->msg_state = ((msg->flags & HTTP_MSGF_TE_CHNK)
5492 ? HTTP_MSG_CHUNK_SIZE
5493 : HTTP_MSG_DATA);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5494
5495 /* TODO/filters: when http-buffer-request option is set or if a
5496 * rule on url_param exists, the first chunk size could be
5497 * already parsed. In that case, msg->next is after the chunk
5498 * size (including the CRLF after the size). So this case should
5499 * be handled to */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5500 }
5501
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5502 /* Some post-connect processing might want us to refrain from starting to
5503 * forward data. Currently, the only reason for this is "balance url_param"
5504 * whichs need to parse/process the request after we've enabled forwarding.
5505 */
5506 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5507 if (!(s->res.flags & CF_READ_ATTACHED)) {
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5508 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +0200[diff] [blame]5509 req->flags |= CF_WAKE_CONNECT;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5510 goto missing_data_or_waiting;
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5511 }
5512 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5513 }
5514
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5515 /* in most states, we should abort in case of early close */
5516 channel_auto_close(req);
5517
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5518 if (req->to_forward) {
5519 /* We can't process the buffer's contents yet */
5520 req->flags |= CF_WAKE_WRITE;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5521 goto missing_data_or_waiting;
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5522 }
5523
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5524 if (msg->msg_state < HTTP_MSG_DONE) {
5525 ret = ((msg->flags & HTTP_MSGF_TE_CHNK)
5526 ? http_msg_forward_chunked_body(s, msg)
5527 : http_msg_forward_body(s, msg));
5528 if (!ret)
5529 goto missing_data_or_waiting;
5530 if (ret < 0)
5531 goto return_bad_req;
5532 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5533
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5534 /* other states, DONE...TUNNEL */
5535 /* we don't want to forward closes on DONE except in tunnel mode. */
5536 if ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5537 channel_dont_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5538
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5539 ret = msg->msg_state;
5540 if (http_resync_states(s)) {
5541 /* some state changes occurred, maybe the analyser
5542 * was disabled too. */
5543 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5544 if (req->flags & CF_SHUTW) {
5545 /* request errors are most likely due to the
5546 * server aborting the transfer. */
5547 goto aborted_xfer;
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5548 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5549 if (msg->err_pos >= 0)
5550 http_capture_bad_message(&sess->fe->invalid_req, s, msg, ret, s->be);
5551 goto return_bad_req;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5552 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5553 return 1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5554 }
5555
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5556 /* If "option abortonclose" is set on the backend, we want to monitor
5557 * the client's connection and forward any shutdown notification to the
5558 * server, which will decide whether to close or to go on processing the
5559 * request. We only do that in tunnel mode, and not in other modes since
5560 * it can be abused to exhaust source ports. */
5561 if (s->be->options & PR_O_ABRT_CLOSE) {
5562 channel_auto_read(req);
5563 if ((req->flags & (CF_SHUTR|CF_READ_NULL)) &&
5564 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN))
5565 s->si[1].flags |= SI_FL_NOLINGER;
5566 channel_auto_close(req);
5567 }
5568 else if (s->txn->meth == HTTP_METH_POST) {
5569 /* POST requests may require to read extra CRLF sent by broken
5570 * browsers and which could cause an RST to be sent upon close
5571 * on some systems (eg: Linux). */
5572 channel_auto_read(req);
5573 }
5574 return 0;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5575
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]5576 missing_data_or_waiting:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5577 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5578 if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5579 if (!(s->flags & SF_ERR_MASK))
5580 s->flags |= SF_ERR_CLICL;
5581 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5582 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5583 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5584 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5585 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5586 }
5587
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5588 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5589 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5590 if (objt_server(s->target))
5591 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5592
5593 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5594 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5595
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5596 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5597 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5598 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5599
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5600 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5601 * 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]5602 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5603 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5604 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5605
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5606 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5607 * 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]5608 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5609 * modes are already handled by the stream sock layer. We must not do
5610 * this in content-length mode because it could present the MSG_MORE
5611 * flag with the last block of forwarded data, which would cause an
5612 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5613 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5614 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5615 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5616
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5617 return 0;
5618
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5619 return_bad_req: /* let's centralize all bad requests */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5620 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5621 if (sess->listener->counters)
5622 sess->listener->counters->failed_req++;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5623
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5624 return_bad_req_stats_ok:
5625 txn->req.msg_state = HTTP_MSG_ERROR;
5626 if (txn->status) {
5627 /* Note: we don't send any error if some data were already sent */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5628 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5629 } else {
5630 txn->status = 400;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5631 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5632 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5633 req->analysers &= AN_FLT_END;
5634 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]5635
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5636 if (!(s->flags & SF_ERR_MASK))
5637 s->flags |= SF_ERR_PRXCOND;
5638 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5639 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5640 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5641 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5642 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5643 }
5644 return 0;
5645
5646 aborted_xfer:
5647 txn->req.msg_state = HTTP_MSG_ERROR;
5648 if (txn->status) {
5649 /* Note: we don't send any error if some data were already sent */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5650 http_reply_and_close(s, txn->status, NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5651 } else {
5652 txn->status = 502;
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5653 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5654 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5655 req->analysers &= AN_FLT_END;
5656 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]5657
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5658 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5659 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5660 if (objt_server(s->target))
5661 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5662
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5663 if (!(s->flags & SF_ERR_MASK))
5664 s->flags |= SF_ERR_SRVCL;
5665 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5666 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5667 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5668 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5669 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5670 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5671 return 0;
5672}
5673
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5674/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5675 * processing can continue on next analysers, or zero if it either needs more
5676 * data or wants to immediately abort the response (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5677 * 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]5678 * when it has nothing left to do, and may remove any analyser when it wants to
5679 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5680 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5681int http_wait_for_response(struct stream *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5682{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5683 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5684 struct http_txn *txn = s->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5685 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5686 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5687 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5688 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5689 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5690
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5691 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]5692 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5693 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5694 rep,
5695 rep->rex, rep->wex,
5696 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5697 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5698 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5699
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5700 /*
5701 * Now parse the partial (or complete) lines.
5702 * We will check the response syntax, and also join multi-line
5703 * headers. An index of all the lines will be elaborated while
5704 * parsing.
5705 *
5706 * For the parsing, we use a 28 states FSM.
5707 *
5708 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5709 * rep->buf->p = beginning of response
5710 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5711 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5712 * msg->eol = end of current header or line (LF or CRLF)
5713 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5714 */
5715
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5716 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5717 /* There's a protected area at the end of the buffer for rewriting
5718 * purposes. We don't want to start to parse the request if the
5719 * protected area is affected, because we may have to move processed
5720 * data later, which is much more complicated.
5721 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5722 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]5723 if (unlikely(!channel_is_rewritable(rep))) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5724 /* some data has still not left the buffer, wake us once that's done */
5725 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5726 goto abort_response;
5727 channel_dont_close(rep);
5728 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5729 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5730 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5731 }
5732
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5733 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5734 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5735 buffer_slow_realign(rep->buf);
5736
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5737 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5738 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5739 }
5740
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5741 /* 1: we might have to print this header in debug mode */
5742 if (unlikely((global.mode & MODE_DEBUG) &&
5743 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]5744 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5745 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5746
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5747 sol = rep->buf->p;
5748 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5749 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5750
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5751 sol += hdr_idx_first_pos(&txn->hdr_idx);
5752 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5753
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5754 while (cur_idx) {
5755 eol = sol + txn->hdr_idx.v[cur_idx].len;
5756 debug_hdr("srvhdr", s, sol, eol);
5757 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5758 cur_idx = txn->hdr_idx.v[cur_idx].next;
5759 }
5760 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5761
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5762 /*
5763 * Now we quickly check if we have found a full valid response.
5764 * If not so, we check the FD and buffer states before leaving.
5765 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5766 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5767 * responses are checked first.
5768 *
5769 * Depending on whether the client is still there or not, we
5770 * may send an error response back or not. Note that normally
5771 * we should only check for HTTP status there, and check I/O
5772 * errors somewhere else.
5773 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5774
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5775 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5776 /* Invalid response */
5777 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5778 /* we detected a parsing error. We want to archive this response
5779 * in the dedicated proxy area for later troubleshooting.
5780 */
5781 hdr_response_bad:
5782 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5783 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]5784
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5785 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5786 if (objt_server(s->target)) {
5787 objt_server(s->target)->counters.failed_resp++;
5788 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5789 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5790 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5791 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5792 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5793 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5794 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5795 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5796 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5797
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5798 if (!(s->flags & SF_ERR_MASK))
5799 s->flags |= SF_ERR_PRXCOND;
5800 if (!(s->flags & SF_FINST_MASK))
5801 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5802
5803 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5804 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5805
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5806 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5807 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5808 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5809 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5810 goto hdr_response_bad;
5811 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5812
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5813 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5814 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5815 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5816 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]5817 else if (txn->flags & TX_NOT_FIRST)
5818 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5819
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5820 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5821 if (objt_server(s->target)) {
5822 objt_server(s->target)->counters.failed_resp++;
5823 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5824 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5825
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5826 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5827 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5828 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5829 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5830 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5831 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5832
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5833 if (!(s->flags & SF_ERR_MASK))
5834 s->flags |= SF_ERR_SRVCL;
5835 if (!(s->flags & SF_FINST_MASK))
5836 s->flags |= SF_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5837 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5838 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5839
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +0200[diff] [blame]5840 /* read timeout : return a 504 to the client. */
5841 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5842 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5843 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]5844
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5845 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5846 if (objt_server(s->target)) {
5847 objt_server(s->target)->counters.failed_resp++;
5848 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5849 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5850
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5851 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5852 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5853 txn->status = 504;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5854 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5855 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5856 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5857
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5858 if (!(s->flags & SF_ERR_MASK))
5859 s->flags |= SF_ERR_SRVTO;
5860 if (!(s->flags & SF_FINST_MASK))
5861 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5862 return 0;
5863 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5864
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5865 /* client abort with an abortonclose */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5866 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]5867 sess->fe->fe_counters.cli_aborts++;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5868 s->be->be_counters.cli_aborts++;
5869 if (objt_server(s->target))
5870 objt_server(s->target)->counters.cli_aborts++;
5871
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5872 rep->analysers &= AN_FLT_END;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5873 channel_auto_close(rep);
5874
5875 txn->status = 400;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5876 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5877 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_400));
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5878
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5879 if (!(s->flags & SF_ERR_MASK))
5880 s->flags |= SF_ERR_CLICL;
5881 if (!(s->flags & SF_FINST_MASK))
5882 s->flags |= SF_FINST_H;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5883
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5884 /* process_stream() will take care of the error */
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5885 return 0;
5886 }
5887
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5888 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5889 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5890 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5891 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]5892 else if (txn->flags & TX_NOT_FIRST)
5893 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5894
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5895 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5896 if (objt_server(s->target)) {
5897 objt_server(s->target)->counters.failed_resp++;
5898 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5899 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5900
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5901 channel_auto_close(rep);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5902 rep->analysers &= AN_FLT_END;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5903 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5904 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5905 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]5906 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5907
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5908 if (!(s->flags & SF_ERR_MASK))
5909 s->flags |= SF_ERR_SRVCL;
5910 if (!(s->flags & SF_FINST_MASK))
5911 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5912 return 0;
5913 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5914
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5915 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5916 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5917 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5918 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]5919 else if (txn->flags & TX_NOT_FIRST)
5920 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5921
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5922 s->be->be_counters.failed_resp++;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]5923 rep->analysers &= AN_FLT_END;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5924 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5925
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5926 if (!(s->flags & SF_ERR_MASK))
5927 s->flags |= SF_ERR_CLICL;
5928 if (!(s->flags & SF_FINST_MASK))
5929 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5930
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5931 /* process_stream() will take care of the error */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5932 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5933 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5934
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5935 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]5936 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5937 return 0;
5938 }
5939
5940 /* More interesting part now : we know that we have a complete
5941 * response which at least looks like HTTP. We have an indicator
5942 * of each header's length, so we can parse them quickly.
5943 */
5944
5945 if (unlikely(msg->err_pos >= 0))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5946 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]5947
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5948 /*
5949 * 1: get the status code
5950 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5951 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5952 if (n < 1 || n > 5)
5953 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5954 /* when the client triggers a 4xx from the server, it's most often due
5955 * to a missing object or permission. These events should be tracked
5956 * because if they happen often, it may indicate a brute force or a
5957 * vulnerability scan.
5958 */
5959 if (n == 4)
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5960 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5961
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5962 if (objt_server(s->target))
5963 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5964
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]5965 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
5966 * exactly one digit "." one digit. This check may be disabled using
5967 * option accept-invalid-http-response.
5968 */
5969 if (!(s->be->options2 & PR_O2_RSPBUG_OK)) {
5970 if (msg->sl.st.v_l != 8) {
5971 msg->err_pos = 0;
5972 goto hdr_response_bad;
5973 }
5974
5975 if (rep->buf->p[4] != '/' ||
5976 !isdigit((unsigned char)rep->buf->p[5]) ||
5977 rep->buf->p[6] != '.' ||
5978 !isdigit((unsigned char)rep->buf->p[7])) {
5979 msg->err_pos = 4;
5980 goto hdr_response_bad;
5981 }
5982 }
5983
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5984 /* check if the response is HTTP/1.1 or above */
5985 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5986 ((rep->buf->p[5] > '1') ||
5987 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5988 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5989
5990 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5991 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]5992
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5993 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5994 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5995
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5996 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]5997
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5998 /* Adjust server's health based on status code. Note: status codes 501
5999 * and 505 are triggered on demand by client request, so we must not
6000 * count them as server failures.
6001 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6002 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6003 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6004 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6005 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6006 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6007 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6008
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6009 /*
6010 * 2: check for cacheability.
6011 */
6012
6013 switch (txn->status) {
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]6014 case 100:
6015 /*
6016 * We may be facing a 100-continue response, in which case this
6017 * is not the right response, and we're waiting for the next one.
6018 * Let's allow this response to go to the client and wait for the
6019 * next one.
6020 */
6021 hdr_idx_init(&txn->hdr_idx);
6022 msg->next -= channel_forward(rep, msg->next);
6023 msg->msg_state = HTTP_MSG_RPBEFORE;
6024 txn->status = 0;
6025 s->logs.t_data = -1; /* was not a response yet */
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6026 FLT_STRM_CB(s, flt_http_reset(s, msg));
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]6027 goto next_one;
6028
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6029 case 200:
6030 case 203:
6031 case 206:
6032 case 300:
6033 case 301:
6034 case 410:
6035 /* RFC2616 @13.4:
6036 * "A response received with a status code of
6037 * 200, 203, 206, 300, 301 or 410 MAY be stored
6038 * by a cache (...) unless a cache-control
6039 * directive prohibits caching."
6040 *
6041 * RFC2616 @9.5: POST method :
6042 * "Responses to this method are not cacheable,
6043 * unless the response includes appropriate
6044 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6045 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6046 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6047 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6048 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
6049 break;
6050 default:
6051 break;
6052 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6053
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6054 /*
6055 * 3: we may need to capture headers
6056 */
6057 s->logs.logwait &= ~LW_RESP;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6058 if (unlikely((s->logs.logwait & LW_RSPHDR) && s->res_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6059 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6060 s->res_cap, sess->fe->rsp_cap);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6061
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6062 /* 4: determine the transfer-length according to RFC2616 #4.4, updated
6063 * by RFC7230#3.3.3 :
6064 *
6065 * The length of a message body is determined by one of the following
6066 * (in order of precedence):
6067 *
6068 * 1. Any response to a HEAD request and any response with a 1xx
6069 * (Informational), 204 (No Content), or 304 (Not Modified) status
6070 * code is always terminated by the first empty line after the
6071 * header fields, regardless of the header fields present in the
6072 * message, and thus cannot contain a message body.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6073 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6074 * 2. Any 2xx (Successful) response to a CONNECT request implies that
6075 * the connection will become a tunnel immediately after the empty
6076 * line that concludes the header fields. A client MUST ignore any
6077 * Content-Length or Transfer-Encoding header fields received in
6078 * such a message.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6079 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6080 * 3. If a Transfer-Encoding header field is present and the chunked
6081 * transfer coding (Section 4.1) is the final encoding, the message
6082 * body length is determined by reading and decoding the chunked
6083 * data until the transfer coding indicates the data is complete.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6084 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6085 * If a Transfer-Encoding header field is present in a response and
6086 * the chunked transfer coding is not the final encoding, the
6087 * message body length is determined by reading the connection until
6088 * it is closed by the server. If a Transfer-Encoding header field
6089 * is present in a request and the chunked transfer coding is not
6090 * the final encoding, the message body length cannot be determined
6091 * reliably; the server MUST respond with the 400 (Bad Request)
6092 * status code and then close the connection.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6093 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6094 * If a message is received with both a Transfer-Encoding and a
6095 * Content-Length header field, the Transfer-Encoding overrides the
6096 * Content-Length. Such a message might indicate an attempt to
6097 * perform request smuggling (Section 9.5) or response splitting
6098 * (Section 9.4) and ought to be handled as an error. A sender MUST
6099 * remove the received Content-Length field prior to forwarding such
6100 * a message downstream.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6101 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6102 * 4. If a message is received without Transfer-Encoding and with
6103 * either multiple Content-Length header fields having differing
6104 * field-values or a single Content-Length header field having an
6105 * invalid value, then the message framing is invalid and the
6106 * recipient MUST treat it as an unrecoverable error. If this is a
6107 * request message, the server MUST respond with a 400 (Bad Request)
6108 * status code and then close the connection. If this is a response
6109 * message received by a proxy, the proxy MUST close the connection
6110 * to the server, discard the received response, and send a 502 (Bad
6111 * Gateway) response to the client. If this is a response message
6112 * received by a user agent, the user agent MUST close the
6113 * connection to the server and discard the received response.
6114 *
6115 * 5. If a valid Content-Length header field is present without
6116 * Transfer-Encoding, its decimal value defines the expected message
6117 * body length in octets. If the sender closes the connection or
6118 * the recipient times out before the indicated number of octets are
6119 * received, the recipient MUST consider the message to be
6120 * incomplete and close the connection.
6121 *
6122 * 6. If this is a request message and none of the above are true, then
6123 * the message body length is zero (no message body is present).
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6124 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6125 * 7. Otherwise, this is a response message without a declared message
6126 * body length, so the message body length is determined by the
6127 * number of octets received prior to the server closing the
6128 * connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6129 */
6130
6131 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6132 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6133 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6134 * FIXME: should we parse anyway and return an error on chunked encoding ?
6135 */
6136 if (txn->meth == HTTP_METH_HEAD ||
6137 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6138 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6139 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6140 goto skip_content_length;
6141 }
6142
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6143 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6144 ctx.idx = 0;
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]6145 while (http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6146 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6147 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
6148 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6149 /* bad transfer-encoding (chunked followed by something else) */
6150 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6151 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6152 break;
6153 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6154 }
6155
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6156 /* Chunked responses must have their content-length removed */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6157 ctx.idx = 0;
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6158 if (use_close_only || (msg->flags & HTTP_MSGF_TE_CHNK)) {
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6159 while (http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx))
6160 http_remove_header2(msg, &txn->hdr_idx, &ctx);
6161 }
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6162 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]6163 signed long long cl;
6164
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6165 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6166 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6167 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6168 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6169
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6170 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6171 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6172 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6173 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6174
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6175 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6176 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6177 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6178 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6179
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6180 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6181 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6182 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6183 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6184
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6185 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6186 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6187 }
6188
6189skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6190 /* Now we have to check if we need to modify the Connection header.
6191 * This is more difficult on the response than it is on the request,
6192 * because we can have two different HTTP versions and we don't know
6193 * how the client will interprete a response. For instance, let's say
6194 * that the client sends a keep-alive request in HTTP/1.0 and gets an
6195 * HTTP/1.1 response without any header. Maybe it will bound itself to
6196 * HTTP/1.0 because it only knows about it, and will consider the lack
6197 * of header as a close, or maybe it knows HTTP/1.1 and can consider
6198 * the lack of header as a keep-alive. Thus we will use two flags
6199 * indicating how a request MAY be understood by the client. In case
6200 * of multiple possibilities, we'll fix the header to be explicit. If
6201 * ambiguous cases such as both close and keepalive are seen, then we
6202 * will fall back to explicit close. Note that we won't take risks with
6203 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6204 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6205 */
6206
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6207 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
6208 txn->status == 101)) {
6209 /* Either we've established an explicit tunnel, or we're
6210 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6211 * to understand the next protocols. We have to switch to tunnel
6212 * mode, so that we transfer the request and responses then let
6213 * this protocol pass unmodified. When we later implement specific
6214 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6215 * header which contains information about that protocol for
6216 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6217 */
6218 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
6219 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6220 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
6221 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6222 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6223 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6224 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6225
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6226 /* this situation happens when combining pretend-keepalive with httpclose. */
6227 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6228 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6229 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6230 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
6231
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6232 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6233 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6234 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
6235 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6236
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6237 /* now adjust header transformations depending on current state */
6238 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
6239 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
6240 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6241 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6242 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6243 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6244 else { /* SCL / KAL */
6245 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6246 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6247 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6248 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6249
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6250 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6251 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6252
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6253 /* Some keep-alive responses are converted to Server-close if
6254 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6255 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6256 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
6257 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6258 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6259 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6260 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6261 }
6262
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6263 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6264 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6265
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6266 /* end of job, return OK */
6267 rep->analysers &= ~an_bit;
6268 rep->analyse_exp = TICK_ETERNITY;
6269 channel_auto_close(rep);
6270 return 1;
6271
6272 abort_keep_alive:
6273 /* A keep-alive request to the server failed on a network error.
6274 * The client is required to retry. We need to close without returning
6275 * any other information so that the client retries.
6276 */
6277 txn->status = 0;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6278 rep->analysers &= AN_FLT_END;
6279 s->req.analysers &= AN_FLT_END;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6280 channel_auto_close(rep);
6281 s->logs.logwait = 0;
6282 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6283 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6284 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6285 http_reply_and_close(s, txn->status, NULL);
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6286 return 0;
6287}
6288
6289/* This function performs all the processing enabled for the current response.
6290 * It normally returns 1 unless it wants to break. It relies on buffers flags,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6291 * and updates s->res.analysers. It might make sense to explode it into several
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6292 * other functions. It works like process_request (see indications above).
6293 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6294int 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]6295{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6296 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6297 struct http_txn *txn = s->txn;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6298 struct http_msg *msg = &txn->rsp;
6299 struct proxy *cur_proxy;
6300 struct cond_wordlist *wl;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]6301 enum rule_result ret = HTTP_RULE_RES_CONT;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6302
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6303 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]6304 now_ms, __FUNCTION__,
6305 s,
6306 rep,
6307 rep->rex, rep->wex,
6308 rep->flags,
6309 rep->buf->i,
6310 rep->analysers);
6311
6312 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
6313 return 0;
6314
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6315 /* The stats applet needs to adjust the Connection header but we don't
6316 * apply any filter there.
6317 */
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6318 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
6319 rep->analysers &= ~an_bit;
6320 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6321 goto skip_filters;
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6322 }
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6323
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6324 /*
6325 * We will have to evaluate the filters.
6326 * As opposed to version 1.2, now they will be evaluated in the
6327 * filters order and not in the header order. This means that
6328 * each filter has to be validated among all headers.
6329 *
6330 * Filters are tried with ->be first, then with ->fe if it is
6331 * different from ->be.
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6332 *
6333 * Maybe we are in resume condiion. In this case I choose the
6334 * "struct proxy" which contains the rule list matching the resume
6335 * pointer. If none of theses "struct proxy" match, I initialise
6336 * the process with the first one.
6337 *
6338 * In fact, I check only correspondance betwwen the current list
6339 * pointer and the ->fe rule list. If it doesn't match, I initialize
6340 * the loop with the ->be.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6341 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6342 if (s->current_rule_list == &sess->fe->http_res_rules)
6343 cur_proxy = sess->fe;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6344 else
6345 cur_proxy = s->be;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6346 while (1) {
6347 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6348
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6349 /* evaluate http-response rules */
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6350 if (ret == HTTP_RULE_RES_CONT) {
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]6351 ret = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, s);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]6352
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6353 if (ret == HTTP_RULE_RES_BADREQ)
6354 goto return_srv_prx_502;
6355
6356 if (ret == HTTP_RULE_RES_DONE) {
6357 rep->analysers &= ~an_bit;
6358 rep->analyse_exp = TICK_ETERNITY;
6359 return 1;
6360 }
6361 }
6362
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6363 /* we need to be called again. */
6364 if (ret == HTTP_RULE_RES_YIELD) {
6365 channel_dont_close(rep);
6366 return 0;
6367 }
6368
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6369 /* try headers filters */
6370 if (rule_set->rsp_exp != NULL) {
6371 if (apply_filters_to_response(s, rep, rule_set) < 0) {
6372 return_bad_resp:
6373 if (objt_server(s->target)) {
6374 objt_server(s->target)->counters.failed_resp++;
6375 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6376 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6377 s->be->be_counters.failed_resp++;
6378 return_srv_prx_502:
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6379 rep->analysers &= AN_FLT_END;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6380 txn->status = 502;
6381 s->logs.t_data = -1; /* was not a valid response */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6382 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6383 channel_truncate(rep);
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6384 http_reply_and_close(s, txn->status, http_error_message(s, HTTP_ERR_502));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6385 if (!(s->flags & SF_ERR_MASK))
6386 s->flags |= SF_ERR_PRXCOND;
6387 if (!(s->flags & SF_FINST_MASK))
6388 s->flags |= SF_FINST_H;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6389 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6390 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6391 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6392
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6393 /* has the response been denied ? */
6394 if (txn->flags & TX_SVDENY) {
6395 if (objt_server(s->target))
6396 objt_server(s->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6397
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6398 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6399 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6400 if (sess->listener->counters)
6401 sess->listener->counters->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6402
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6403 goto return_srv_prx_502;
6404 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]6405
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6406 /* add response headers from the rule sets in the same order */
6407 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6408 if (txn->status < 200 && txn->status != 101)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6409 break;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6410 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]6411 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]6412 ret = acl_pass(ret);
6413 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
6414 ret = !ret;
6415 if (!ret)
6416 continue;
6417 }
6418 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
6419 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6420 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6421
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6422 /* check whether we're already working on the frontend */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6423 if (cur_proxy == sess->fe)
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6424 break;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6425 cur_proxy = sess->fe;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6426 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6427
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6428 /* After this point, this anayzer can't return yield, so we can
6429 * remove the bit corresponding to this analyzer from the list.
6430 *
6431 * Note that the intermediate returns and goto found previously
6432 * reset the analyzers.
6433 */
6434 rep->analysers &= ~an_bit;
6435 rep->analyse_exp = TICK_ETERNITY;
6436
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6437 /* OK that's all we can do for 1xx responses */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6438 if (unlikely(txn->status < 200 && txn->status != 101))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6439 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6440
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6441 /*
6442 * Now check for a server cookie.
6443 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]6444 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]6445 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6446
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6447 /*
6448 * Check for cache-control or pragma headers if required.
6449 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6450 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]6451 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6452
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6453 /*
6454 * Add server cookie in the response if needed
6455 */
6456 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
6457 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6458 (!(s->flags & SF_DIRECT) ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6459 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
6460 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
6461 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
6462 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
6463 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6464 !(s->flags & SF_IGNORE_PRST)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6465 /* the server is known, it's not the one the client requested, or the
6466 * cookie's last seen date needs to be refreshed. We have to
6467 * insert a set-cookie here, except if we want to insert only on POST
6468 * requests and this one isn't. Note that servers which don't have cookies
6469 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6470 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6471 if (!objt_server(s->target)->cookie) {
6472 chunk_printf(&trash,
6473 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
6474 s->be->cookie_name);
6475 }
6476 else {
6477 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]6478
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6479 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
6480 /* emit last_date, which is mandatory */
6481 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6482 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6483 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6484
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6485 if (s->be->cookie_maxlife) {
6486 /* emit first_date, which is either the original one or
6487 * the current date.
6488 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6489 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6490 s30tob64(txn->cookie_first_date ?
6491 txn->cookie_first_date >> 2 :
6492 (date.tv_sec+3) >> 2, trash.str + trash.len);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6493 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6494 }
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6495 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6496 chunk_appendf(&trash, "; path=/");
6497 }
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6498
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6499 if (s->be->cookie_domain)
6500 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6501
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6502 if (s->be->ck_opts & PR_CK_HTTPONLY)
6503 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6504
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6505 if (s->be->ck_opts & PR_CK_SECURE)
6506 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6507
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6508 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
6509 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6510
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6511 txn->flags &= ~TX_SCK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6512 if (objt_server(s->target)->cookie && (s->flags & SF_DIRECT))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6513 /* the server did not change, only the date was updated */
6514 txn->flags |= TX_SCK_UPDATED;
6515 else
6516 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6517
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6518 /* Here, we will tell an eventual cache on the client side that we don't
6519 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6520 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6521 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6522 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6523 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6524
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6525 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6526
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6527 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
6528 "Cache-control: private", 22) < 0))
6529 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6530 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6531 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6532
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6533 /*
6534 * Check if result will be cacheable with a cookie.
6535 * We'll block the response if security checks have caught
6536 * nasty things such as a cacheable cookie.
6537 */
6538 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6539 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
6540 (s->be->options & PR_O_CHK_CACHE)) {
6541 /* we're in presence of a cacheable response containing
6542 * a set-cookie header. We'll block it as requested by
6543 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6544 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6545 if (objt_server(s->target))
6546 objt_server(s->target)->counters.failed_secu++;
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6547
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6548 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6549 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6550 if (sess->listener->counters)
6551 sess->listener->counters->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6552
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6553 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
6554 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6555 send_log(s->be, LOG_ALERT,
6556 "Blocking cacheable cookie in response from instance %s, server %s.\n",
6557 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6558 goto return_srv_prx_502;
6559 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6560
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6561 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6562 /*
6563 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
6564 * If an "Upgrade" token is found, the header is left untouched in order
6565 * 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]6566 * if anything but "Upgrade" is present in the Connection header. We don't
6567 * want to touch any 101 response either since it's switching to another
6568 * protocol.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6569 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6570 if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) &&
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6571 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6572 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6573 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
6574 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6575
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6576 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6577 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6578 /* we want a keep-alive response here. Keep-alive header
6579 * required if either side is not 1.1.
6580 */
6581 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
6582 want_flags |= TX_CON_KAL_SET;
6583 }
6584 else {
6585 /* we want a close response here. Close header required if
6586 * the server is 1.1, regardless of the client.
6587 */
6588 if (msg->flags & HTTP_MSGF_VER_11)
6589 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +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 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
6593 http_change_connection_header(txn, msg, want_flags);
6594 }
6595
6596 skip_header_mangling:
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6597 if ((msg->flags & HTTP_MSGF_XFER_LEN) || HAS_FILTERS(s) ||
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6598 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
6599 rep->analysers &= ~AN_FLT_XFER_DATA;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6600 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6601 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6602
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6603 /* if the user wants to log as soon as possible, without counting
6604 * bytes from the server, then this is the right moment. We have
6605 * to temporarily assign bytes_out to log what we currently have.
6606 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6607 if (!LIST_ISEMPTY(&sess->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6608 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
6609 s->logs.bytes_out = txn->rsp.eoh;
6610 s->do_log(s);
6611 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6612 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6613 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6614}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6615
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6616/* This function is an analyser which forwards response body (including chunk
6617 * sizes if any). It is called as soon as we must forward, even if we forward
6618 * zero byte. The only situation where it must not be called is when we're in
6619 * tunnel mode and we want to forward till the close. It's used both to forward
6620 * remaining data and to resync after end of body. It expects the msg_state to
6621 * 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]6622 * 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]6623 *
6624 * It is capable of compressing response data both in content-length mode and
6625 * in chunked mode. The state machines follows different flows depending on
6626 * whether content-length and chunked modes are used, since there are no
6627 * trailers in content-length :
6628 *
6629 * chk-mode cl-mode
6630 * ,----- BODY -----.
6631 * / \
6632 * V size > 0 V chk-mode
6633 * .--> SIZE -------------> DATA -------------> CRLF
6634 * | | size == 0 | last byte |
6635 * | v final crlf v inspected |
6636 * | TRAILERS -----------> DONE |
6637 * | |
6638 * `----------------------------------------------'
6639 *
6640 * Compression only happens in the DATA state, and must be flushed in final
6641 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
6642 * is performed at once on final states for all bytes parsed, or when leaving
6643 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6644 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6645int http_response_forward_body(struct stream *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6646{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6647 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6648 struct http_txn *txn = s->txn;
6649 struct http_msg *msg = &s->txn->rsp;
Christopher Faulet3e344292015-11-24 16:24:13 +0100[diff] [blame]6650 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6651
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6652 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6653 return 0;
6654
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6655 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]6656 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6657 !s->req.analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6658 /* Output closed while we were sending data. We must abort and
6659 * wake the other side up.
6660 */
6661 msg->msg_state = HTTP_MSG_ERROR;
6662 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6663 return 1;
6664 }
6665
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6666 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6667 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6668
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6669 if (msg->msg_state == HTTP_MSG_BODY) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6670 msg->msg_state = ((msg->flags & HTTP_MSGF_TE_CHNK)
6671 ? HTTP_MSG_CHUNK_SIZE
6672 : HTTP_MSG_DATA);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6673 }
6674
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6675 if (res->to_forward) {
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6676 /* We can't process the buffer's contents yet */
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6677 res->flags |= CF_WAKE_WRITE;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6678 goto missing_data_or_waiting;
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6679 }
6680
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6681 if (msg->msg_state < HTTP_MSG_DONE) {
6682 ret = ((msg->flags & HTTP_MSGF_TE_CHNK)
6683 ? http_msg_forward_chunked_body(s, msg)
6684 : http_msg_forward_body(s, msg));
6685 if (!ret)
6686 goto missing_data_or_waiting;
6687 if (ret < 0)
6688 goto return_bad_res;
6689 }
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6690
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6691 /* other states, DONE...TUNNEL */
6692 /* for keep-alive we don't want to forward closes on DONE */
6693 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6694 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
6695 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]6696
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6697 ret = msg->msg_state;
6698 if (http_resync_states(s)) {
6699 /* some state changes occurred, maybe the analyser was disabled
6700 * too. */
6701 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
6702 if (res->flags & CF_SHUTW) {
6703 /* response errors are most likely due to the
6704 * client aborting the transfer. */
6705 goto aborted_xfer;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6706 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6707 if (msg->err_pos >= 0)
6708 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, strm_fe(s));
6709 goto return_bad_res;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6710 }
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6711 return 1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6712 }
Willy Tarreauf51d03c2016-05-02 15:25:15 +0200[diff] [blame]6713 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6714
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6715 missing_data_or_waiting:
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6716 if (res->flags & CF_SHUTW)
6717 goto aborted_xfer;
6718
6719 /* stop waiting for data if the input is closed before the end. If the
6720 * client side was already closed, it means that the client has aborted,
6721 * so we don't want to count this as a server abort. Otherwise it's a
6722 * server abort.
6723 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6724 if (res->flags & CF_SHUTR) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6725 if ((s->req.flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6726 goto aborted_xfer;
Christopher Fauleta46bbd82015-06-19 09:00:58 +0200[diff] [blame]6727 /* If we have some pending data, we continue the processing */
6728 if (!buffer_pending(res->buf)) {
6729 if (!(s->flags & SF_ERR_MASK))
6730 s->flags |= SF_ERR_SRVCL;
6731 s->be->be_counters.srv_aborts++;
6732 if (objt_server(s->target))
6733 objt_server(s->target)->counters.srv_aborts++;
6734 goto return_bad_res_stats_ok;
6735 }
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6736 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6737
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6738 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6739 if (!s->req.analysers)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6740 goto return_bad_res;
6741
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6742 /* When TE: chunked is used, we need to get there again to parse
6743 * remaining chunks even if the server has closed, so we don't want to
6744 * set CF_DONTCLOSE. Similarly, if the body length is undefined, if
6745 * keep-alive is set on the client side or if there are filters
6746 * registered on the stream, we don't want to forward a close
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6747 */
Christopher Faulet92d36382015-11-05 13:35:03 +0100[diff] [blame]6748 if ((msg->flags & HTTP_MSGF_TE_CHNK) || !msg->body_len ||
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6749 HAS_FILTERS(s) ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6750 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6751 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6752 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6753
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6754 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6755 * 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]6756 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6757 * modes are already handled by the stream sock layer. We must not do
6758 * this in content-length mode because it could present the MSG_MORE
6759 * flag with the last block of forwarded data, which would cause an
6760 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6761 */
Christopher Faulet92d36382015-11-05 13:35:03 +0100[diff] [blame]6762 if ((msg->flags & HTTP_MSGF_TE_CHNK) || (msg->flags & HTTP_MSGF_COMPRESSING))
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6763 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6764
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6765 /* the stream handler will take care of timeouts and errors */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6766 return 0;
6767
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6768 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6769 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6770 if (objt_server(s->target))
6771 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6772
6773 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6774 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6775 /* don't send any error message as we're in the body */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6776 http_reply_and_close(s, txn->status, NULL);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6777 res->analysers &= AN_FLT_END;
6778 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]6779 if (objt_server(s->target))
6780 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6781
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6782 if (!(s->flags & SF_ERR_MASK))
6783 s->flags |= SF_ERR_PRXCOND;
6784 if (!(s->flags & SF_FINST_MASK))
6785 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6786 return 0;
6787
6788 aborted_xfer:
6789 txn->rsp.msg_state = HTTP_MSG_ERROR;
6790 /* don't send any error message as we're in the body */
Christopher Fauleta94e5a52015-12-09 15:55:06 +0100[diff] [blame]6791 http_reply_and_close(s, txn->status, NULL);
Christopher Fauletd7c91962015-04-30 11:48:27 +0200[diff] [blame]6792 res->analysers &= AN_FLT_END;
6793 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]6794
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6795 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6796 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6797 if (objt_server(s->target))
6798 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6799
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6800 if (!(s->flags & SF_ERR_MASK))
6801 s->flags |= SF_ERR_CLICL;
6802 if (!(s->flags & SF_FINST_MASK))
6803 s->flags |= SF_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6804 return 0;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6805}
6806
6807
6808static inline int
6809http_msg_forward_body(struct stream *s, struct http_msg *msg)
6810{
6811 struct channel *chn = msg->chn;
6812 int ret;
6813
6814 /* Here we have the guarantee to be in HTTP_MSG_DATA or HTTP_MSG_ENDING state */
6815
6816 if (msg->msg_state == HTTP_MSG_ENDING)
6817 goto ending;
6818
6819 /* Neither content-length, nor transfer-encoding was found, so we must
6820 * read the body until the server connection is closed. In that case, we
6821 * eat data as they come. Of course, this happens for response only. */
6822 if (!(msg->flags & HTTP_MSGF_XFER_LEN)) {
6823 unsigned long long len = (chn->buf->i - msg->next);
6824 msg->chunk_len += len;
6825 msg->body_len += len;
6826 }
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6827 ret = FLT_STRM_DATA_CB(s, chn, flt_http_data(s, msg),
6828 /* default_ret */ MIN(msg->chunk_len, chn->buf->i - msg->next),
6829 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6830 msg->next += ret;
6831 msg->chunk_len -= ret;
6832 if (msg->chunk_len) {
6833 /* input empty or output full */
6834 if (chn->buf->i > msg->next)
6835 chn->flags |= CF_WAKE_WRITE;
6836 goto missing_data_or_waiting;
6837 }
6838
6839 if (!(msg->flags & HTTP_MSGF_XFER_LEN) && !(chn->flags & CF_SHUTR)) {
6840 /* The server still sending data */
6841 goto missing_data_or_waiting;
6842 }
6843 msg->msg_state = HTTP_MSG_ENDING;
6844
6845 ending:
6846 /* we may have some pending data starting at res->buf->p such as a last
6847 * chunk of data or trailers. */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6848 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
6849 /* default_ret */ msg->next,
6850 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6851 b_adv(chn->buf, ret);
6852 msg->next -= ret;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]6853 if (unlikely(!(chn->flags & CF_WROTE_DATA) || msg->sov > 0))
6854 msg->sov -= ret;
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]6855 if (msg->next)
6856 goto waiting;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]6857
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6858 FLT_STRM_DATA_CB(s, chn, flt_http_end(s, msg),
6859 /* default_ret */ 1,
6860 /* on_error */ goto error,
6861 /* on_wait */ goto waiting);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6862 msg->msg_state = HTTP_MSG_DONE;
6863 return 1;
6864
6865 missing_data_or_waiting:
6866 /* we may have some pending data starting at chn->buf->p */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6867 ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next),
6868 /* default_ret */ msg->next,
6869 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6870 b_adv(chn->buf, ret);
6871 msg->next -= ret;
6872 if (!(chn->flags & CF_WROTE_DATA) || msg->sov > 0)
6873 msg->sov -= ret;
Christopher Faulet75e2eb62015-12-15 10:41:47 +0100[diff] [blame]6874 if (!HAS_DATA_FILTERS(s, chn))
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6875 msg->chunk_len -= channel_forward(chn, msg->chunk_len);
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]6876 waiting:
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6877 return 0;
6878 error:
6879 return -1;
6880}
6881
6882static inline int
6883http_msg_forward_chunked_body(struct stream *s, struct http_msg *msg)
6884{
6885 struct channel *chn = msg->chn;
6886 int ret;
6887
6888 /* Here we have the guarantee to be in one of the following state:
6889 * HTTP_MSG_DATA, HTTP_MSG_CHUNK_SIZE, HTTP_MSG_CHUNK_CRLF,
6890 * HTTP_MSG_TRAILERS or HTTP_MSG_ENDING. */
6891
6892 switch_states:
6893 switch (msg->msg_state) {
6894 case HTTP_MSG_DATA:
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6895 ret = FLT_STRM_DATA_CB(s, chn, flt_http_data(s, msg),
6896 /* default_ret */ MIN(msg->chunk_len, chn->buf->i - msg->next),
6897 /* on_error */ goto error);
6898 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6899 msg->chunk_len -= ret;
6900 if (msg->chunk_len) {
6901 /* input empty or output full */
6902 if (chn->buf->i > msg->next)
6903 chn->flags |= CF_WAKE_WRITE;
6904 goto missing_data_or_waiting;
6905 }
6906
6907 /* nothing left to forward for this chunk*/
6908 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
6909 /* fall through for HTTP_MSG_CHUNK_CRLF */
6910
6911 case HTTP_MSG_CHUNK_CRLF:
6912 /* we want the CRLF after the data */
6913 ret = http_skip_chunk_crlf(msg);
6914 if (ret == 0)
6915 goto missing_data_or_waiting;
6916 if (ret < 0)
6917 goto chunk_parsing_error;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]6918 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6919 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
6920 /* fall through for HTTP_MSG_CHUNK_SIZE */
6921
6922 case HTTP_MSG_CHUNK_SIZE:
6923 /* read the chunk size and assign it to ->chunk_len,
6924 * then set ->next to point to the body and switch to
6925 * DATA or TRAILERS state.
6926 */
6927 ret = http_parse_chunk_size(msg);
6928 if (ret == 0)
6929 goto missing_data_or_waiting;
6930 if (ret < 0)
6931 goto chunk_parsing_error;
Christopher Faulet113f7de2015-12-14 14:52:13 +0100[diff] [blame]6932 msg->next += ret;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6933 if (msg->chunk_len) {
6934 msg->msg_state = HTTP_MSG_DATA;
6935 goto switch_states;
6936 }
6937 msg->msg_state = HTTP_MSG_TRAILERS;
6938 /* fall through for HTTP_MSG_TRAILERS */
6939
6940 case HTTP_MSG_TRAILERS:
6941 ret = http_forward_trailers(msg);
6942 if (ret < 0)
6943 goto chunk_parsing_error;
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6944 FLT_STRM_DATA_CB(s, chn, flt_http_chunk_trailers(s, msg),
6945 /* default_ret */ 1,
6946 /* on_error */ goto error);
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6947 msg->next += msg->sol;
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6948 if (!ret)
6949 goto missing_data_or_waiting;
6950 break;
6951
6952 case HTTP_MSG_ENDING:
6953 goto ending;
6954
6955 default:
6956 /* This should no happen in this function */
6957 goto error;
6958 }
6959
6960 msg->msg_state = HTTP_MSG_ENDING;
6961 ending:
6962 /* we may have some pending data starting at res->buf->p such as a last
6963 * chunk of data or trailers. */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6964 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]6965 /* default_ret */ msg->next,
6966 /* on_error */ goto error);
6967 b_adv(chn->buf, ret);
6968 msg->next -= ret;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]6969 if (unlikely(!(chn->flags & CF_WROTE_DATA) || msg->sov > 0))
6970 msg->sov -= ret;
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]6971 if (msg->next)
6972 goto waiting;
Willy Tarreau9962f8f2016-06-28 11:52:08 +0200[diff] [blame]6973
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6974 FLT_STRM_DATA_CB(s, chn, flt_http_end(s, msg),
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6975 /* default_ret */ 1,
6976 /* on_error */ goto error,
6977 /* on_wait */ goto waiting);
6978 msg->msg_state = HTTP_MSG_DONE;
6979 return 1;
6980
6981 missing_data_or_waiting:
6982 /* we may have some pending data starting at chn->buf->p */
Christopher Fauletda02e172015-12-04 09:25:05 +0100[diff] [blame]6983 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]6984 /* default_ret */ msg->next,
6985 /* on_error */ goto error);
6986 b_adv(chn->buf, ret);
6987 msg->next -= ret;
6988 if (!(chn->flags & CF_WROTE_DATA) || msg->sov > 0)
6989 msg->sov -= ret;
Christopher Faulet75e2eb62015-12-15 10:41:47 +0100[diff] [blame]6990 if (!HAS_DATA_FILTERS(s, chn))
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6991 msg->chunk_len -= channel_forward(chn, msg->chunk_len);
Christopher Fauleta9300a32016-06-28 15:54:44 +0200[diff] [blame]6992 waiting:
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]6993 return 0;
6994
6995 chunk_parsing_error:
6996 if (msg->err_pos >= 0) {
6997 if (chn->flags & CF_ISRESP)
6998 http_capture_bad_message(&s->be->invalid_rep, s, msg,
6999 msg->msg_state, strm_fe(s));
7000 else
7001 http_capture_bad_message(&strm_fe(s)->invalid_req, s,
7002 msg, msg->msg_state, s->be);
7003 }
7004 error:
7005 return -1;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7006}
7007
Christopher Fauletdbe34eb2015-12-02 10:01:17 +0100[diff] [blame]7008
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7009/* Iterate the same filter through all request headers.
7010 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7011 * Since it can manage the switch to another backend, it updates the per-proxy
7012 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7013 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7014int 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]7015{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7016 char *cur_ptr, *cur_end, *cur_next;
7017 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7018 struct http_txn *txn = s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7019 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7020 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]7021
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7022 last_hdr = 0;
7023
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7024 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7025 old_idx = 0;
7026
7027 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7028 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7029 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7030 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7031 (exp->action == ACT_ALLOW ||
7032 exp->action == ACT_DENY ||
7033 exp->action == ACT_TARPIT))
7034 return 0;
7035
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7036 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7037 if (!cur_idx)
7038 break;
7039
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7040 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7041 cur_ptr = cur_next;
7042 cur_end = cur_ptr + cur_hdr->len;
7043 cur_next = cur_end + cur_hdr->cr + 1;
7044
7045 /* Now we have one header between cur_ptr and cur_end,
7046 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7047 */
7048
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7049 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]7050 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7051 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7052 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7053 last_hdr = 1;
7054 break;
7055
7056 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7057 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7058 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7059 break;
7060
7061 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7062 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7063 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7064 break;
7065
7066 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7067 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7068 if (trash.len < 0)
7069 return -1;
7070
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7071 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7072 /* FIXME: if the user adds a newline in the replacement, the
7073 * index will not be recalculated for now, and the new line
7074 * will not be counted as a new header.
7075 */
7076
7077 cur_end += delta;
7078 cur_next += delta;
7079 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7080 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7081 break;
7082
7083 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7084 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7085 cur_next += delta;
7086
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7087 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7088 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7089 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7090 cur_hdr->len = 0;
7091 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7092 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7093 break;
7094
7095 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7096 }
7097
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7098 /* keep the link from this header to next one in case of later
7099 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7100 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7101 old_idx = cur_idx;
7102 }
7103 return 0;
7104}
7105
7106
7107/* Apply the filter to the request line.
7108 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7109 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7110 * Since it can manage the switch to another backend, it updates the per-proxy
7111 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7112 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7113int 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]7114{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7115 char *cur_ptr, *cur_end;
7116 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7117 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7118 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7119
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7120 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7121 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7122 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7123 (exp->action == ACT_ALLOW ||
7124 exp->action == ACT_DENY ||
7125 exp->action == ACT_TARPIT))
7126 return 0;
7127 else if (exp->action == ACT_REMOVE)
7128 return 0;
7129
7130 done = 0;
7131
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7132 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7133 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7134
7135 /* Now we have the request line between cur_ptr and cur_end */
7136
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7137 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]7138 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7139 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7140 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7141 done = 1;
7142 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7143
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7144 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7145 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7146 done = 1;
7147 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7148
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7149 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7150 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7151 done = 1;
7152 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7153
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7154 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7155 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7156 if (trash.len < 0)
7157 return -1;
7158
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7159 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7160 /* FIXME: if the user adds a newline in the replacement, the
7161 * index will not be recalculated for now, and the new line
7162 * will not be counted as a new header.
7163 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7164
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7165 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7166 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7167 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7168 HTTP_MSG_RQMETH,
7169 cur_ptr, cur_end + 1,
7170 NULL, NULL);
7171 if (unlikely(!cur_end))
7172 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7173
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7174 /* we have a full request and we know that we have either a CR
7175 * or an LF at <ptr>.
7176 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7177 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
7178 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]7179 /* there is no point trying this regex on headers */
7180 return 1;
7181 }
7182 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7183 return done;
7184}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]7185
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7186
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7187
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7188/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7189 * 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]7190 * 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]7191 * unparsable request. Since it can manage the switch to another backend, it
7192 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7193 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7194int apply_filters_to_request(struct stream *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7195{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7196 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7197 struct http_txn *txn = s->txn;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7198 struct hdr_exp *exp;
7199
7200 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7201 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7202
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7203 /*
7204 * The interleaving of transformations and verdicts
7205 * makes it difficult to decide to continue or stop
7206 * the evaluation.
7207 */
7208
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7209 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
7210 break;
7211
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7212 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7213 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7214 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7215 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7216
7217 /* if this filter had a condition, evaluate it now and skip to
7218 * next filter if the condition does not match.
7219 */
7220 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7221 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]7222 ret = acl_pass(ret);
7223 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7224 ret = !ret;
7225
7226 if (!ret)
7227 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7228 }
7229
7230 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7231 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7232 if (unlikely(ret < 0))
7233 return -1;
7234
7235 if (likely(ret == 0)) {
7236 /* The filter did not match the request, it can be
7237 * iterated through all headers.
7238 */
Willy Tarreau34d4c3c2015-01-30 20:58:58 +0100[diff] [blame]7239 if (unlikely(apply_filter_to_req_headers(s, req, exp) < 0))
7240 return -1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7241 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7242 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7243 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7244}
7245
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7246
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7247/* Find the end of a cookie value contained between <s> and <e>. It works the
7248 * same way as with headers above except that the semi-colon also ends a token.
7249 * See RFC2965 for more information. Note that it requires a valid header to
7250 * return a valid result.
7251 */
7252char *find_cookie_value_end(char *s, const char *e)
7253{
7254 int quoted, qdpair;
7255
7256 quoted = qdpair = 0;
7257 for (; s < e; s++) {
7258 if (qdpair) qdpair = 0;
7259 else if (quoted) {
7260 if (*s == '\\') qdpair = 1;
7261 else if (*s == '"') quoted = 0;
7262 }
7263 else if (*s == '"') quoted = 1;
7264 else if (*s == ',' || *s == ';') return s;
7265 }
7266 return s;
7267}
7268
7269/* Delete a value in a header between delimiters <from> and <next> in buffer
7270 * <buf>. The number of characters displaced is returned, and the pointer to
7271 * the first delimiter is updated if required. The function tries as much as
7272 * possible to respect the following principles :
7273 * - replace <from> delimiter by the <next> one unless <from> points to a
7274 * colon, in which case <next> is simply removed
7275 * - set exactly one space character after the new first delimiter, unless
7276 * there are not enough characters in the block being moved to do so.
7277 * - remove unneeded spaces before the previous delimiter and after the new
7278 * one.
7279 *
7280 * It is the caller's responsibility to ensure that :
7281 * - <from> points to a valid delimiter or the colon ;
7282 * - <next> points to a valid delimiter or the final CR/LF ;
7283 * - there are non-space chars before <from> ;
7284 * - there is a CR/LF at or after <next>.
7285 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]7286int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7287{
7288 char *prev = *from;
7289
7290 if (*prev == ':') {
7291 /* We're removing the first value, preserve the colon and add a
7292 * space if possible.
7293 */
7294 if (!http_is_crlf[(unsigned char)*next])
7295 next++;
7296 prev++;
7297 if (prev < next)
7298 *prev++ = ' ';
7299
7300 while (http_is_spht[(unsigned char)*next])
7301 next++;
7302 } else {
7303 /* Remove useless spaces before the old delimiter. */
7304 while (http_is_spht[(unsigned char)*(prev-1)])
7305 prev--;
7306 *from = prev;
7307
7308 /* copy the delimiter and if possible a space if we're
7309 * not at the end of the line.
7310 */
7311 if (!http_is_crlf[(unsigned char)*next]) {
7312 *prev++ = *next++;
7313 if (prev + 1 < next)
7314 *prev++ = ' ';
7315 while (http_is_spht[(unsigned char)*next])
7316 next++;
7317 }
7318 }
7319 return buffer_replace2(buf, prev, next, NULL, 0);
7320}
7321
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7322/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7323 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7324 * desirable to call it only when needed. This code is quite complex because
7325 * of the multiple very crappy and ambiguous syntaxes we have to support. it
7326 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7327 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7328void manage_client_side_cookies(struct stream *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7329{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7330 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7331 struct session *sess = s->sess;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7332 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7333 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7334 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
7335 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7336
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7337 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]7338 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7339 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7340
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7341 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7342 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7343 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7344
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7345 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7346 hdr_beg = hdr_next;
7347 hdr_end = hdr_beg + cur_hdr->len;
7348 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7349
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7350 /* We have one full header between hdr_beg and hdr_end, and the
7351 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7352 * "Cookie:" headers.
7353 */
7354
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7355 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7356 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7357 old_idx = cur_idx;
7358 continue;
7359 }
7360
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7361 del_from = NULL; /* nothing to be deleted */
7362 preserve_hdr = 0; /* assume we may kill the whole header */
7363
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7364 /* Now look for cookies. Conforming to RFC2109, we have to support
7365 * attributes whose name begin with a '$', and associate them with
7366 * the right cookie, if we want to delete this cookie.
7367 * So there are 3 cases for each cookie read :
7368 * 1) it's a special attribute, beginning with a '$' : ignore it.
7369 * 2) it's a server id cookie that we *MAY* want to delete : save
7370 * some pointers on it (last semi-colon, beginning of cookie...)
7371 * 3) it's an application cookie : we *MAY* have to delete a previous
7372 * "special" cookie.
7373 * At the end of loop, if a "special" cookie remains, we may have to
7374 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7375 * *MUST* delete it.
7376 *
7377 * Note: RFC2965 is unclear about the processing of spaces around
7378 * the equal sign in the ATTR=VALUE form. A careful inspection of
7379 * the RFC explicitly allows spaces before it, and not within the
7380 * tokens (attrs or values). An inspection of RFC2109 allows that
7381 * too but section 10.1.3 lets one think that spaces may be allowed
7382 * after the equal sign too, resulting in some (rare) buggy
7383 * implementations trying to do that. So let's do what servers do.
7384 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
7385 * allowed quoted strings in values, with any possible character
7386 * after a backslash, including control chars and delimitors, which
7387 * causes parsing to become ambiguous. Browsers also allow spaces
7388 * within values even without quotes.
7389 *
7390 * We have to keep multiple pointers in order to support cookie
7391 * removal at the beginning, middle or end of header without
7392 * corrupting the header. All of these headers are valid :
7393 *
7394 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
7395 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
7396 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
7397 * | | | | | | | | |
7398 * | | | | | | | | hdr_end <--+
7399 * | | | | | | | +--> next
7400 * | | | | | | +----> val_end
7401 * | | | | | +-----------> val_beg
7402 * | | | | +--------------> equal
7403 * | | | +----------------> att_end
7404 * | | +---------------------> att_beg
7405 * | +--------------------------> prev
7406 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7407 */
7408
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7409 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
7410 /* Iterate through all cookies on this line */
7411
7412 /* find att_beg */
7413 att_beg = prev + 1;
7414 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7415 att_beg++;
7416
7417 /* find att_end : this is the first character after the last non
7418 * space before the equal. It may be equal to hdr_end.
7419 */
7420 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7421
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7422 while (equal < hdr_end) {
7423 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7424 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7425 if (http_is_spht[(unsigned char)*equal++])
7426 continue;
7427 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7428 }
7429
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7430 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7431 * is between <att_beg> and <equal>, both may be identical.
7432 */
7433
7434 /* look for end of cookie if there is an equal sign */
7435 if (equal < hdr_end && *equal == '=') {
7436 /* look for the beginning of the value */
7437 val_beg = equal + 1;
7438 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7439 val_beg++;
7440
7441 /* find the end of the value, respecting quotes */
7442 next = find_cookie_value_end(val_beg, hdr_end);
7443
7444 /* make val_end point to the first white space or delimitor after the value */
7445 val_end = next;
7446 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7447 val_end--;
7448 } else {
7449 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7450 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7451
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7452 /* We have nothing to do with attributes beginning with '$'. However,
7453 * they will automatically be removed if a header before them is removed,
7454 * since they're supposed to be linked together.
7455 */
7456 if (*att_beg == '$')
7457 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7458
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7459 /* Ignore cookies with no equal sign */
7460 if (equal == next) {
7461 /* This is not our cookie, so we must preserve it. But if we already
7462 * scheduled another cookie for removal, we cannot remove the
7463 * complete header, but we can remove the previous block itself.
7464 */
7465 preserve_hdr = 1;
7466 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7467 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7468 val_end += delta;
7469 next += delta;
7470 hdr_end += delta;
7471 hdr_next += delta;
7472 cur_hdr->len += delta;
7473 http_msg_move_end(&txn->req, delta);
7474 prev = del_from;
7475 del_from = NULL;
7476 }
7477 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7478 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7479
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7480 /* if there are spaces around the equal sign, we need to
7481 * strip them otherwise we'll get trouble for cookie captures,
7482 * or even for rewrites. Since this happens extremely rarely,
7483 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7484 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7485 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7486 int stripped_before = 0;
7487 int stripped_after = 0;
7488
7489 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7490 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7491 equal += stripped_before;
7492 val_beg += stripped_before;
7493 }
7494
7495 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7496 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7497 val_beg += stripped_after;
7498 stripped_before += stripped_after;
7499 }
7500
7501 val_end += stripped_before;
7502 next += stripped_before;
7503 hdr_end += stripped_before;
7504 hdr_next += stripped_before;
7505 cur_hdr->len += stripped_before;
7506 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7507 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7508 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7509
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7510 /* First, let's see if we want to capture this cookie. We check
7511 * that we don't already have a client side cookie, because we
7512 * can only capture one. Also as an optimisation, we ignore
7513 * cookies shorter than the declared name.
7514 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7515 if (sess->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7516 (val_end - att_beg >= sess->fe->capture_namelen) &&
7517 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7518 int log_len = val_end - att_beg;
7519
7520 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7521 Alert("HTTP logging : out of memory.\n");
7522 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7523 if (log_len > sess->fe->capture_len)
7524 log_len = sess->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7525 memcpy(txn->cli_cookie, att_beg, log_len);
7526 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7527 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7528 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7529
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7530 /* Persistence cookies in passive, rewrite or insert mode have the
7531 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7532 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7533 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7534 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7535 * For cookies in prefix mode, the form is :
7536 *
7537 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7538 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7539 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
7540 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
7541 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7542 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7543
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7544 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7545 * have the server ID between val_beg and delim, and the original cookie between
7546 * delim+1 and val_end. Otherwise, delim==val_end :
7547 *
7548 * Cookie: NAME=SRV; # in all but prefix modes
7549 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7550 * | || || | |+-> next
7551 * | || || | +--> val_end
7552 * | || || +---------> delim
7553 * | || |+------------> val_beg
7554 * | || +-------------> att_end = equal
7555 * | |+-----------------> att_beg
7556 * | +------------------> prev
7557 * +-------------------------> hdr_beg
7558 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7559
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7560 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7561 for (delim = val_beg; delim < val_end; delim++)
7562 if (*delim == COOKIE_DELIM)
7563 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7564 } else {
7565 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7566 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7567 /* Now check if the cookie contains a date field, which would
7568 * appear after a vertical bar ('|') just after the server name
7569 * and before the delimiter.
7570 */
7571 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7572 if (vbar1) {
7573 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7574 * right is the last seen date. It is a base64 encoded
7575 * 30-bit value representing the UNIX date since the
7576 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7577 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7578 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7579 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7580 if (val_end - vbar1 >= 5) {
7581 val = b64tos30(vbar1);
7582 if (val > 0)
7583 txn->cookie_last_date = val << 2;
7584 }
7585 /* look for a second vertical bar */
7586 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7587 if (vbar1 && (val_end - vbar1 > 5)) {
7588 val = b64tos30(vbar1 + 1);
7589 if (val > 0)
7590 txn->cookie_first_date = val << 2;
7591 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7592 }
7593 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7594
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7595 /* if the cookie has an expiration date and the proxy wants to check
7596 * it, then we do that now. We first check if the cookie is too old,
7597 * then only if it has expired. We detect strict overflow because the
7598 * time resolution here is not great (4 seconds). Cookies with dates
7599 * in the future are ignored if their offset is beyond one day. This
7600 * allows an admin to fix timezone issues without expiring everyone
7601 * and at the same time avoids keeping unwanted side effects for too
7602 * long.
7603 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7604 if (txn->cookie_first_date && s->be->cookie_maxlife &&
7605 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7606 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7607 txn->flags &= ~TX_CK_MASK;
7608 txn->flags |= TX_CK_OLD;
7609 delim = val_beg; // let's pretend we have not found the cookie
7610 txn->cookie_first_date = 0;
7611 txn->cookie_last_date = 0;
7612 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7613 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
7614 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7615 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7616 txn->flags &= ~TX_CK_MASK;
7617 txn->flags |= TX_CK_EXPIRED;
7618 delim = val_beg; // let's pretend we have not found the cookie
7619 txn->cookie_first_date = 0;
7620 txn->cookie_last_date = 0;
7621 }
7622
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7623 /* Here, we'll look for the first running server which supports the cookie.
7624 * This allows to share a same cookie between several servers, for example
7625 * to dedicate backup servers to specific servers only.
7626 * However, to prevent clients from sticking to cookie-less backup server
7627 * when they have incidentely learned an empty cookie, we simply ignore
7628 * empty cookies and mark them as invalid.
7629 * The same behaviour is applied when persistence must be ignored.
7630 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7631 if ((delim == val_beg) || (s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7632 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7633
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7634 while (srv) {
7635 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7636 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7637 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7638 (s->be->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7639 (s->flags & SF_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7640 /* we found the server and we can use it */
7641 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7642 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7643 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7644 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7645 break;
7646 } else {
7647 /* we found a server, but it's down,
7648 * mark it as such and go on in case
7649 * another one is available.
7650 */
7651 txn->flags &= ~TX_CK_MASK;
7652 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7653 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7654 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7655 srv = srv->next;
7656 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7657
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7658 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7659 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7660 txn->flags &= ~TX_CK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7661 if ((s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7662 txn->flags |= TX_CK_UNUSED;
7663 else
7664 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7665 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7666
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7667 /* depending on the cookie mode, we may have to either :
7668 * - delete the complete cookie if we're in insert+indirect mode, so that
7669 * the server never sees it ;
7670 * - remove the server id from the cookie value, and tag the cookie as an
7671 * application cookie so that it does not get accidentely removed later,
7672 * if we're in cookie prefix mode
7673 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7674 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7675 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7676
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7677 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7678 val_end += delta;
7679 next += delta;
7680 hdr_end += delta;
7681 hdr_next += delta;
7682 cur_hdr->len += delta;
7683 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7684
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7685 del_from = NULL;
7686 preserve_hdr = 1; /* we want to keep this cookie */
7687 }
7688 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7689 (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]7690 del_from = prev;
7691 }
7692 } else {
7693 /* This is not our cookie, so we must preserve it. But if we already
7694 * scheduled another cookie for removal, we cannot remove the
7695 * complete header, but we can remove the previous block itself.
7696 */
7697 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7698
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7699 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7700 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7701 if (att_beg >= del_from)
7702 att_beg += delta;
7703 if (att_end >= del_from)
7704 att_end += delta;
7705 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7706 val_end += delta;
7707 next += delta;
7708 hdr_end += delta;
7709 hdr_next += delta;
7710 cur_hdr->len += delta;
7711 http_msg_move_end(&txn->req, delta);
7712 prev = del_from;
7713 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7714 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7715 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7716
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7717 /* continue with next cookie on this header line */
7718 att_beg = next;
7719 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7720
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7721 /* There are no more cookies on this line.
7722 * We may still have one (or several) marked for deletion at the
7723 * end of the line. We must do this now in two ways :
7724 * - if some cookies must be preserved, we only delete from the
7725 * mark to the end of line ;
7726 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7727 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7728 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7729 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7730 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7731 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7732 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7733 cur_hdr->len += delta;
7734 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7735 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7736
7737 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7738 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7739 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7740 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7741 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7742 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7743 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7744 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7745 }
7746
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7747 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7748 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7749 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7750}
7751
7752
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7753/* Iterate the same filter through all response headers contained in <rtr>.
7754 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7755 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7756int 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]7757{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7758 char *cur_ptr, *cur_end, *cur_next;
7759 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7760 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7761 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7762 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7763
7764 last_hdr = 0;
7765
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7766 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7767 old_idx = 0;
7768
7769 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7770 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7771 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7772 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7773 (exp->action == ACT_ALLOW ||
7774 exp->action == ACT_DENY))
7775 return 0;
7776
7777 cur_idx = txn->hdr_idx.v[old_idx].next;
7778 if (!cur_idx)
7779 break;
7780
7781 cur_hdr = &txn->hdr_idx.v[cur_idx];
7782 cur_ptr = cur_next;
7783 cur_end = cur_ptr + cur_hdr->len;
7784 cur_next = cur_end + cur_hdr->cr + 1;
7785
7786 /* Now we have one header between cur_ptr and cur_end,
7787 * and the next header starts at cur_next.
7788 */
7789
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7790 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]7791 switch (exp->action) {
7792 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7793 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7794 last_hdr = 1;
7795 break;
7796
7797 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7798 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7799 last_hdr = 1;
7800 break;
7801
7802 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7803 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7804 if (trash.len < 0)
7805 return -1;
7806
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7807 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7808 /* FIXME: if the user adds a newline in the replacement, the
7809 * index will not be recalculated for now, and the new line
7810 * will not be counted as a new header.
7811 */
7812
7813 cur_end += delta;
7814 cur_next += delta;
7815 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7816 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7817 break;
7818
7819 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7820 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7821 cur_next += delta;
7822
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7823 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7824 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7825 txn->hdr_idx.used--;
7826 cur_hdr->len = 0;
7827 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7828 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7829 break;
7830
7831 }
7832 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7833
7834 /* keep the link from this header to next one in case of later
7835 * removal of next header.
7836 */
7837 old_idx = cur_idx;
7838 }
7839 return 0;
7840}
7841
7842
7843/* Apply the filter to the status line in the response buffer <rtr>.
7844 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7845 * or -1 if a replacement resulted in an invalid status line.
7846 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7847int 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]7848{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7849 char *cur_ptr, *cur_end;
7850 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7851 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7852 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7853
7854
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7855 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7856 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7857 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7858 (exp->action == ACT_ALLOW ||
7859 exp->action == ACT_DENY))
7860 return 0;
7861 else if (exp->action == ACT_REMOVE)
7862 return 0;
7863
7864 done = 0;
7865
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7866 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7867 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7868
7869 /* Now we have the status line between cur_ptr and cur_end */
7870
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7871 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]7872 switch (exp->action) {
7873 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7874 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7875 done = 1;
7876 break;
7877
7878 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7879 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7880 done = 1;
7881 break;
7882
7883 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7884 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7885 if (trash.len < 0)
7886 return -1;
7887
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7888 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7889 /* FIXME: if the user adds a newline in the replacement, the
7890 * index will not be recalculated for now, and the new line
7891 * will not be counted as a new header.
7892 */
7893
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7894 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7895 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7896 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7897 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7898 cur_ptr, cur_end + 1,
7899 NULL, NULL);
7900 if (unlikely(!cur_end))
7901 return -1;
7902
7903 /* we have a full respnse and we know that we have either a CR
7904 * or an LF at <ptr>.
7905 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7906 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]7907 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]7908 /* there is no point trying this regex on headers */
7909 return 1;
7910 }
7911 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7912 return done;
7913}
7914
7915
7916
7917/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7918 * 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]7919 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7920 * unparsable response.
7921 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7922int apply_filters_to_response(struct stream *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7923{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7924 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7925 struct http_txn *txn = s->txn;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7926 struct hdr_exp *exp;
7927
7928 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7929 int ret;
7930
7931 /*
7932 * The interleaving of transformations and verdicts
7933 * makes it difficult to decide to continue or stop
7934 * the evaluation.
7935 */
7936
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7937 if (txn->flags & TX_SVDENY)
7938 break;
7939
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7940 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7941 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7942 exp->action == ACT_PASS)) {
7943 exp = exp->next;
7944 continue;
7945 }
7946
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7947 /* if this filter had a condition, evaluate it now and skip to
7948 * next filter if the condition does not match.
7949 */
7950 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7951 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]7952 ret = acl_pass(ret);
7953 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7954 ret = !ret;
7955 if (!ret)
7956 continue;
7957 }
7958
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7959 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7960 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7961 if (unlikely(ret < 0))
7962 return -1;
7963
7964 if (likely(ret == 0)) {
7965 /* The filter did not match the response, it can be
7966 * iterated through all headers.
7967 */
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7968 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
7969 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7970 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7971 }
7972 return 0;
7973}
7974
7975
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7976/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7977 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7978 * desirable to call it only when needed. This function is also used when we
7979 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7980 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7981void manage_server_side_cookies(struct stream *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7982{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7983 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7984 struct session *sess = s->sess;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7985 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7986 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7987 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7988 char *hdr_beg, *hdr_end, *hdr_next;
7989 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7990
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7991 /* Iterate through the headers.
7992 * we start with the start line.
7993 */
7994 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7995 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7996
7997 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7998 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7999 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8000
8001 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8002 hdr_beg = hdr_next;
8003 hdr_end = hdr_beg + cur_hdr->len;
8004 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8005
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8006 /* We have one full header between hdr_beg and hdr_end, and the
8007 * next header starts at hdr_next. We're only interested in
8008 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8009 */
8010
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8011 is_cookie2 = 0;
8012 prev = hdr_beg + 10;
8013 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8014 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8015 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
8016 if (!val) {
8017 old_idx = cur_idx;
8018 continue;
8019 }
8020 is_cookie2 = 1;
8021 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8022 }
8023
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8024 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
8025 * <prev> points to the colon.
8026 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8027 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8028
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8029 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
8030 * check-cache is enabled) and we are not interested in checking
8031 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]8032 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]8033 if (s->be->cookie_name == NULL && sess->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8034 return;
8035
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8036 /* OK so now we know we have to process this response cookie.
8037 * The format of the Set-Cookie header is slightly different
8038 * from the format of the Cookie header in that it does not
8039 * support the comma as a cookie delimiter (thus the header
8040 * cannot be folded) because the Expires attribute described in
8041 * the original Netscape's spec may contain an unquoted date
8042 * with a comma inside. We have to live with this because
8043 * many browsers don't support Max-Age and some browsers don't
8044 * support quoted strings. However the Set-Cookie2 header is
8045 * clean.
8046 *
8047 * We have to keep multiple pointers in order to support cookie
8048 * removal at the beginning, middle or end of header without
8049 * corrupting the header (in case of set-cookie2). A special
8050 * pointer, <scav> points to the beginning of the set-cookie-av
8051 * fields after the first semi-colon. The <next> pointer points
8052 * either to the end of line (set-cookie) or next unquoted comma
8053 * (set-cookie2). All of these headers are valid :
8054 *
8055 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
8056 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8057 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8058 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
8059 * | | | | | | | | | |
8060 * | | | | | | | | +-> next hdr_end <--+
8061 * | | | | | | | +------------> scav
8062 * | | | | | | +--------------> val_end
8063 * | | | | | +--------------------> val_beg
8064 * | | | | +----------------------> equal
8065 * | | | +------------------------> att_end
8066 * | | +----------------------------> att_beg
8067 * | +------------------------------> prev
8068 * +-----------------------------------------> hdr_beg
8069 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8070
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8071 for (; prev < hdr_end; prev = next) {
8072 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8073
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8074 /* find att_beg */
8075 att_beg = prev + 1;
8076 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8077 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8078
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8079 /* find att_end : this is the first character after the last non
8080 * space before the equal. It may be equal to hdr_end.
8081 */
8082 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8083
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8084 while (equal < hdr_end) {
8085 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
8086 break;
8087 if (http_is_spht[(unsigned char)*equal++])
8088 continue;
8089 att_end = equal;
8090 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8091
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8092 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8093 * is between <att_beg> and <equal>, both may be identical.
8094 */
8095
8096 /* look for end of cookie if there is an equal sign */
8097 if (equal < hdr_end && *equal == '=') {
8098 /* look for the beginning of the value */
8099 val_beg = equal + 1;
8100 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8101 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8102
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8103 /* find the end of the value, respecting quotes */
8104 next = find_cookie_value_end(val_beg, hdr_end);
8105
8106 /* make val_end point to the first white space or delimitor after the value */
8107 val_end = next;
8108 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8109 val_end--;
8110 } else {
8111 /* <equal> points to next comma, semi-colon or EOL */
8112 val_beg = val_end = next = equal;
8113 }
8114
8115 if (next < hdr_end) {
8116 /* Set-Cookie2 supports multiple cookies, and <next> points to
8117 * a colon or semi-colon before the end. So skip all attr-value
8118 * pairs and look for the next comma. For Set-Cookie, since
8119 * commas are permitted in values, skip to the end.
8120 */
8121 if (is_cookie2)
8122 next = find_hdr_value_end(next, hdr_end);
8123 else
8124 next = hdr_end;
8125 }
8126
8127 /* Now everything is as on the diagram above */
8128
8129 /* Ignore cookies with no equal sign */
8130 if (equal == val_end)
8131 continue;
8132
8133 /* If there are spaces around the equal sign, we need to
8134 * strip them otherwise we'll get trouble for cookie captures,
8135 * or even for rewrites. Since this happens extremely rarely,
8136 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8137 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8138 if (unlikely(att_end != equal || val_beg > equal + 1)) {
8139 int stripped_before = 0;
8140 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8141
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8142 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8143 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8144 equal += stripped_before;
8145 val_beg += stripped_before;
8146 }
8147
8148 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8149 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8150 val_beg += stripped_after;
8151 stripped_before += stripped_after;
8152 }
8153
8154 val_end += stripped_before;
8155 next += stripped_before;
8156 hdr_end += stripped_before;
8157 hdr_next += stripped_before;
8158 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]8159 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8160 }
8161
8162 /* First, let's see if we want to capture this cookie. We check
8163 * that we don't already have a server side cookie, because we
8164 * can only capture one. Also as an optimisation, we ignore
8165 * cookies shorter than the declared name.
8166 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8167 if (sess->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]8168 txn->srv_cookie == NULL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8169 (val_end - att_beg >= sess->fe->capture_namelen) &&
8170 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8171 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]8172 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8173 Alert("HTTP logging : out of memory.\n");
8174 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8175 else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8176 if (log_len > sess->fe->capture_len)
8177 log_len = sess->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8178 memcpy(txn->srv_cookie, att_beg, log_len);
8179 txn->srv_cookie[log_len] = 0;
8180 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8181 }
8182
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8183 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8184 /* now check if we need to process it for persistence */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8185 if (!(s->flags & SF_IGNORE_PRST) &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8186 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
8187 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8188 /* assume passive cookie by default */
8189 txn->flags &= ~TX_SCK_MASK;
8190 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8191
8192 /* If the cookie is in insert mode on a known server, we'll delete
8193 * this occurrence because we'll insert another one later.
8194 * 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]8195 * a direct access.
8196 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8197 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]8198 /* The "preserve" flag was set, we don't want to touch the
8199 * server's cookie.
8200 */
8201 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8202 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8203 ((s->flags & SF_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8204 /* this cookie must be deleted */
8205 if (*prev == ':' && next == hdr_end) {
8206 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8207 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8208 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8209 txn->hdr_idx.used--;
8210 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8211 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8212 hdr_next += delta;
8213 http_msg_move_end(&txn->rsp, delta);
8214 /* note: while both invalid now, <next> and <hdr_end>
8215 * are still equal, so the for() will stop as expected.
8216 */
8217 } else {
8218 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8219 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8220 next = prev;
8221 hdr_end += delta;
8222 hdr_next += delta;
8223 cur_hdr->len += delta;
8224 http_msg_move_end(&txn->rsp, delta);
8225 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8226 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8227 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8228 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8229 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8230 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8231 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8232 * with this server since we know it.
8233 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8234 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8235 next += delta;
8236 hdr_end += delta;
8237 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8238 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8239 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8240
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8241 txn->flags &= ~TX_SCK_MASK;
8242 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8243 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8244 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8245 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8246 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8247 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8248 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8249 next += delta;
8250 hdr_end += delta;
8251 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8252 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8253 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8254
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8255 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8256 txn->flags &= ~TX_SCK_MASK;
8257 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8258 }
8259 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8260 /* that's done for this cookie, check the next one on the same
8261 * line when next != hdr_end (only if is_cookie2).
8262 */
8263 }
8264 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8265 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8266 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8267}
8268
8269
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8270/*
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8271 * Check if response is cacheable or not. Updates s->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8272 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8273void check_response_for_cacheability(struct stream *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8274{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8275 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8276 char *p1, *p2;
8277
8278 char *cur_ptr, *cur_end, *cur_next;
8279 int cur_idx;
8280
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]8281 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8282 return;
8283
8284 /* Iterate through the headers.
8285 * we start with the start line.
8286 */
8287 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8288 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8289
8290 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
8291 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8292 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8293
8294 cur_hdr = &txn->hdr_idx.v[cur_idx];
8295 cur_ptr = cur_next;
8296 cur_end = cur_ptr + cur_hdr->len;
8297 cur_next = cur_end + cur_hdr->cr + 1;
8298
8299 /* We have one full header between cur_ptr and cur_end, and the
8300 * next header starts at cur_next. We're only interested in
8301 * "Cookie:" headers.
8302 */
8303
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8304 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
8305 if (val) {
8306 if ((cur_end - (cur_ptr + val) >= 8) &&
8307 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
8308 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
8309 return;
8310 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8311 }
8312
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8313 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
8314 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8315 continue;
8316
8317 /* OK, right now we know we have a cache-control header at cur_ptr */
8318
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8319 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8320
8321 if (p1 >= cur_end) /* no more info */
8322 continue;
8323
8324 /* p1 is at the beginning of the value */
8325 p2 = p1;
8326
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]8327 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8328 p2++;
8329
8330 /* we have a complete value between p1 and p2 */
8331 if (p2 < cur_end && *p2 == '=') {
8332 /* we have something of the form no-cache="set-cookie" */
8333 if ((cur_end - p1 >= 21) &&
8334 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
8335 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8336 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8337 continue;
8338 }
8339
8340 /* OK, so we know that either p2 points to the end of string or to a comma */
8341 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8342 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8343 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8344 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8345 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8346 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8347 return;
8348 }
8349
8350 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8351 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8352 continue;
8353 }
8354 }
8355}
8356
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8357
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8358/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8359 * 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]8360 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8361 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8362 * 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]8363 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8364 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8365 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8366 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8367int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8368{
8369 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8370 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8371 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8372
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8373 if (!uri_auth)
8374 return 0;
8375
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8376 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]8377 return 0;
8378
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8379 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8380 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8381 return 0;
8382
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8383 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8384 return 0;
8385
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8386 return 1;
8387}
8388
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8389/*
8390 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8391 * By default it tries to report the error position as msg->err_pos. However if
8392 * this one is not set, it will then report msg->next, which is the last known
8393 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8394 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8395 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8396void http_capture_bad_message(struct error_snapshot *es, struct stream *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8397 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8398 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8399{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8400 struct session *sess = strm_sess(s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8401 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8402 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8403
Willy Tarreauf3764b72016-03-31 13:45:10 +0200[diff] [blame]8404 es->len = MIN(chn->buf->i, global.tune.bufsize);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8405 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8406 len1 = MIN(len1, es->len);
8407 len2 = es->len - len1; /* remaining data if buffer wraps */
8408
Willy Tarreauf3764b72016-03-31 13:45:10 +0200[diff] [blame]8409 if (!es->buf)
8410 es->buf = malloc(global.tune.bufsize);
8411
8412 if (es->buf) {
8413 memcpy(es->buf, chn->buf->p, len1);
8414 if (len2)
8415 memcpy(es->buf + len1, chn->buf->data, len2);
8416 }
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8417
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8418 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8419 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8420 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8421 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8422
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8423 es->when = date; // user-visible date
8424 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8425 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8426 es->oe = other_end;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8427 if (objt_conn(sess->origin))
8428 es->src = __objt_conn(sess->origin)->addr.from;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8429 else
8430 memset(&es->src, 0, sizeof(es->src));
8431
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8432 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8433 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8434 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8435 es->s_flags = s->flags;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8436 es->t_flags = s->txn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8437 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8438 es->b_out = chn->buf->o;
8439 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8440 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8441 es->m_clen = msg->chunk_len;
8442 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8443}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8444
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8445/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8446 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8447 * performed over the whole headers. Otherwise it must contain a valid header
8448 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8449 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8450 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8451 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8452 * -1. The value fetch stops at commas, so this function is suited for use with
8453 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8454 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8455 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8456unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8457 struct hdr_idx *idx, int occ,
8458 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8459{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8460 struct hdr_ctx local_ctx;
8461 char *ptr_hist[MAX_HDR_HISTORY];
8462 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8463 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8464 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8465
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8466 if (!ctx) {
8467 local_ctx.idx = 0;
8468 ctx = &local_ctx;
8469 }
8470
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8471 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8472 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8473 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8474 occ--;
8475 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8476 *vptr = ctx->line + ctx->val;
8477 *vlen = ctx->vlen;
8478 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8479 }
8480 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8481 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8482 }
8483
8484 /* negative occurrence, we scan all the list then walk back */
8485 if (-occ > MAX_HDR_HISTORY)
8486 return 0;
8487
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8488 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8489 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8490 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8491 len_hist[hist_ptr] = ctx->vlen;
8492 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8493 hist_ptr = 0;
8494 found++;
8495 }
8496 if (-occ > found)
8497 return 0;
8498 /* 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]8499 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8500 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8501 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8502 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8503 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8504 if (hist_ptr >= MAX_HDR_HISTORY)
8505 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8506 *vptr = ptr_hist[hist_ptr];
8507 *vlen = len_hist[hist_ptr];
8508 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8509}
8510
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8511/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8512 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8513 * performed over the whole headers. Otherwise it must contain a valid header
8514 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8515 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8516 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8517 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8518 * -1. This function differs from http_get_hdr() in that it only returns full
8519 * line header values and does not stop at commas.
8520 * The return value is 0 if nothing was found, or non-zero otherwise.
8521 */
8522unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8523 struct hdr_idx *idx, int occ,
8524 struct hdr_ctx *ctx, char **vptr, int *vlen)
8525{
8526 struct hdr_ctx local_ctx;
8527 char *ptr_hist[MAX_HDR_HISTORY];
8528 int len_hist[MAX_HDR_HISTORY];
8529 unsigned int hist_ptr;
8530 int found;
8531
8532 if (!ctx) {
8533 local_ctx.idx = 0;
8534 ctx = &local_ctx;
8535 }
8536
8537 if (occ >= 0) {
8538 /* search from the beginning */
8539 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8540 occ--;
8541 if (occ <= 0) {
8542 *vptr = ctx->line + ctx->val;
8543 *vlen = ctx->vlen;
8544 return 1;
8545 }
8546 }
8547 return 0;
8548 }
8549
8550 /* negative occurrence, we scan all the list then walk back */
8551 if (-occ > MAX_HDR_HISTORY)
8552 return 0;
8553
8554 found = hist_ptr = 0;
8555 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8556 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8557 len_hist[hist_ptr] = ctx->vlen;
8558 if (++hist_ptr >= MAX_HDR_HISTORY)
8559 hist_ptr = 0;
8560 found++;
8561 }
8562 if (-occ > found)
8563 return 0;
Nenad Merdanovic69ad4b92016-03-29 13:14:30 +0200[diff] [blame]8564
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8565 /* 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]8566 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8567 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8568 * to remain in the 0..9 range.
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8569 */
Nenad Merdanovic69ad4b92016-03-29 13:14:30 +0200[diff] [blame]8570 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8571 if (hist_ptr >= MAX_HDR_HISTORY)
8572 hist_ptr -= MAX_HDR_HISTORY;
8573 *vptr = ptr_hist[hist_ptr];
8574 *vlen = len_hist[hist_ptr];
8575 return 1;
8576}
8577
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8578/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8579 * Print a debug line with a header. Always stop at the first CR or LF char,
8580 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8581 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8582 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8583void debug_hdr(const char *dir, struct stream *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8584{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8585 struct session *sess = strm_sess(s);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8586 int max;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8587
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8588 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8589 dir,
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8590 objt_conn(sess->origin) ? (unsigned short)objt_conn(sess->origin)->t.sock.fd : -1,
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]8591 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]8592
8593 for (max = 0; start + max < end; max++)
8594 if (start[max] == '\r' || start[max] == '\n')
8595 break;
8596
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8597 UBOUND(max, trash.size - trash.len - 3);
8598 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8599 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8600 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8601}
8602
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8603
8604/* Allocate a new HTTP transaction for stream <s> unless there is one already.
8605 * The hdr_idx is allocated as well. In case of allocation failure, everything
8606 * allocated is freed and NULL is returned. Otherwise the new transaction is
8607 * assigned to the stream and returned.
8608 */
8609struct http_txn *http_alloc_txn(struct stream *s)
8610{
8611 struct http_txn *txn = s->txn;
8612
8613 if (txn)
8614 return txn;
8615
8616 txn = pool_alloc2(pool2_http_txn);
8617 if (!txn)
8618 return txn;
8619
8620 txn->hdr_idx.size = global.tune.max_http_hdr;
8621 txn->hdr_idx.v = pool_alloc2(pool2_hdr_idx);
8622 if (!txn->hdr_idx.v) {
8623 pool_free2(pool2_http_txn, txn);
8624 return NULL;
8625 }
8626
8627 s->txn = txn;
8628 return txn;
8629}
8630
Thierry FOURNIERfd50f0b2015-09-25 18:53:18 +0200[diff] [blame]8631void http_txn_reset_req(struct http_txn *txn)
8632{
8633 txn->req.flags = 0;
8634 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
8635 txn->req.next = 0;
8636 txn->req.chunk_len = 0LL;
8637 txn->req.body_len = 0LL;
8638 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8639}
8640
8641void http_txn_reset_res(struct http_txn *txn)
8642{
8643 txn->rsp.flags = 0;
8644 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
8645 txn->rsp.next = 0;
8646 txn->rsp.chunk_len = 0LL;
8647 txn->rsp.body_len = 0LL;
8648 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
8649}
8650
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8651/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8652 * Initialize a new HTTP transaction for stream <s>. It is assumed that all
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8653 * the required fields are properly allocated and that we only need to (re)init
8654 * them. This should be used before processing any new request.
8655 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8656void http_init_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8657{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8658 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8659 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8660
8661 txn->flags = 0;
8662 txn->status = -1;
8663
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8664 txn->cookie_first_date = 0;
8665 txn->cookie_last_date = 0;
8666
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8667 txn->srv_cookie = NULL;
8668 txn->cli_cookie = NULL;
8669 txn->uri = NULL;
8670
Thierry FOURNIERfd50f0b2015-09-25 18:53:18 +0200[diff] [blame]8671 http_txn_reset_req(txn);
8672 http_txn_reset_res(txn);
8673
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8674 txn->req.chn = &s->req;
8675 txn->rsp.chn = &s->res;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8676
8677 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8678
8679 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8680 if (fe->options2 & PR_O2_REQBUG_OK)
8681 txn->req.err_pos = -1; /* let buggy requests pass */
8682
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8683 if (txn->hdr_idx.v)
8684 hdr_idx_init(&txn->hdr_idx);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]8685
8686 vars_init(&s->vars_txn, SCOPE_TXN);
8687 vars_init(&s->vars_reqres, SCOPE_REQ);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8688}
8689
8690/* to be used at the end of a transaction */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8691void http_end_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8692{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8693 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8694 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8695
8696 /* these ones will have been dynamically allocated */
8697 pool_free2(pool2_requri, txn->uri);
8698 pool_free2(pool2_capture, txn->cli_cookie);
8699 pool_free2(pool2_capture, txn->srv_cookie);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8700 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8701
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8702 s->unique_id = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8703 txn->uri = NULL;
8704 txn->srv_cookie = NULL;
8705 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8706
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8707 if (s->req_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8708 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8709 for (h = fe->req_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8710 pool_free2(h->pool, s->req_cap[h->index]);
8711 memset(s->req_cap, 0, fe->nb_req_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8712 }
8713
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8714 if (s->res_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8715 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8716 for (h = fe->rsp_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8717 pool_free2(h->pool, s->res_cap[h->index]);
8718 memset(s->res_cap, 0, fe->nb_rsp_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8719 }
8720
Willy Tarreau6204cd92016-03-10 16:33:04 +0100[diff] [blame]8721 vars_prune(&s->vars_txn, s->sess, s);
8722 vars_prune(&s->vars_reqres, s->sess, s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8723}
8724
8725/* to be used at the end of a transaction to prepare a new one */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8726void http_reset_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8727{
8728 http_end_txn(s);
8729 http_init_txn(s);
8730
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]8731 /* reinitialise the current rule list pointer to NULL. We are sure that
8732 * any rulelist match the NULL pointer.
8733 */
8734 s->current_rule_list = NULL;
8735
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8736 s->be = strm_fe(s);
8737 s->logs.logwait = strm_fe(s)->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8738 s->logs.level = 0;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8739 stream_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8740 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8741 /* re-init store persistence */
8742 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]8743 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8744
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8745 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8746
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8747 s->req.flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8748
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8749 /* We must trim any excess data from the response buffer, because we
8750 * may have blocked an invalid response from a server that we don't
8751 * want to accidentely forward once we disable the analysers, nor do
8752 * we want those data to come along with next response. A typical
8753 * example of such data would be from a buggy server responding to
8754 * a HEAD with some data, or sending more than the advertised
8755 * content-length.
8756 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8757 if (unlikely(s->res.buf->i))
8758 s->res.buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8759
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8760 s->req.rto = strm_fe(s)->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8761 s->req.wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8762
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8763 s->res.rto = TICK_ETERNITY;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8764 s->res.wto = strm_fe(s)->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8765
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8766 s->req.rex = TICK_ETERNITY;
8767 s->req.wex = TICK_ETERNITY;
8768 s->req.analyse_exp = TICK_ETERNITY;
8769 s->res.rex = TICK_ETERNITY;
8770 s->res.wex = TICK_ETERNITY;
8771 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8772}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8773
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8774void free_http_res_rules(struct list *r)
8775{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8776 struct act_rule *tr, *pr;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8777
8778 list_for_each_entry_safe(pr, tr, r, list) {
8779 LIST_DEL(&pr->list);
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8780 regex_free(&pr->arg.hdr_add.re);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8781 free(pr);
8782 }
8783}
8784
8785void free_http_req_rules(struct list *r)
8786{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8787 struct act_rule *tr, *pr;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8788
8789 list_for_each_entry_safe(pr, tr, r, list) {
8790 LIST_DEL(&pr->list);
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8791 if (pr->action == ACT_HTTP_REQ_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8792 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8793
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8794 regex_free(&pr->arg.hdr_add.re);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8795 free(pr);
8796 }
8797}
8798
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8799/* parse an "http-request" rule */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8800struct 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]8801{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8802 struct act_rule *rule;
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]8803 struct action_kw *custom = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8804 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8805 char *error;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8806
Vincent Bernat02779b62016-04-03 13:48:43 +0200[diff] [blame]8807 rule = calloc(1, sizeof(*rule));
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8808 if (!rule) {
8809 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8810 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8811 }
8812
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]8813 rule->deny_status = HTTP_ERR_403;
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8814 if (!strcmp(args[0], "allow")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8815 rule->action = ACT_ACTION_ALLOW;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8816 cur_arg = 1;
Willy Tarreau5bd67592014-04-28 22:00:46 +0200[diff] [blame]8817 } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block")) {
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]8818 int code;
8819 int hc;
8820
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8821 rule->action = ACT_ACTION_DENY;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8822 cur_arg = 1;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]8823 if (strcmp(args[cur_arg], "deny_status") == 0) {
8824 cur_arg++;
8825 if (!args[cur_arg]) {
8826 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing status code.\n",
8827 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
8828 goto out_err;
8829 }
8830
8831 code = atol(args[cur_arg]);
8832 cur_arg++;
8833 for (hc = 0; hc < HTTP_ERR_SIZE; hc++) {
8834 if (http_err_codes[hc] == code) {
8835 rule->deny_status = hc;
8836 break;
8837 }
8838 }
8839
8840 if (hc >= HTTP_ERR_SIZE) {
8841 Warning("parsing [%s:%d] : status code %d not handled, using default code 403.\n",
8842 file, linenum, code);
8843 }
8844 }
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8845 } else if (!strcmp(args[0], "tarpit")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8846 rule->action = ACT_HTTP_REQ_TARPIT;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8847 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8848 } else if (!strcmp(args[0], "auth")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8849 rule->action = ACT_HTTP_REQ_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8850 cur_arg = 1;
8851
8852 while(*args[cur_arg]) {
8853 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8854 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8855 cur_arg+=2;
8856 continue;
8857 } else
8858 break;
8859 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8860 } else if (!strcmp(args[0], "set-nice")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8861 rule->action = ACT_HTTP_SET_NICE;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8862 cur_arg = 1;
8863
8864 if (!*args[cur_arg] ||
8865 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8866 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
8867 file, linenum, args[0]);
8868 goto out_err;
8869 }
8870 rule->arg.nice = atoi(args[cur_arg]);
8871 if (rule->arg.nice < -1024)
8872 rule->arg.nice = -1024;
8873 else if (rule->arg.nice > 1024)
8874 rule->arg.nice = 1024;
8875 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8876 } else if (!strcmp(args[0], "set-tos")) {
8877#ifdef IP_TOS
8878 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8879 rule->action = ACT_HTTP_SET_TOS;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8880 cur_arg = 1;
8881
8882 if (!*args[cur_arg] ||
8883 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8884 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8885 file, linenum, args[0]);
8886 goto out_err;
8887 }
8888
8889 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8890 if (err && *err != '\0') {
8891 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8892 file, linenum, err, args[0]);
8893 goto out_err;
8894 }
8895 cur_arg++;
8896#else
8897 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8898 goto out_err;
8899#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8900 } else if (!strcmp(args[0], "set-mark")) {
8901#ifdef SO_MARK
8902 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8903 rule->action = ACT_HTTP_SET_MARK;
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8904 cur_arg = 1;
8905
8906 if (!*args[cur_arg] ||
8907 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8908 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8909 file, linenum, args[0]);
8910 goto out_err;
8911 }
8912
8913 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8914 if (err && *err != '\0') {
8915 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8916 file, linenum, err, args[0]);
8917 goto out_err;
8918 }
8919 cur_arg++;
8920 global.last_checks |= LSTCHK_NETADM;
8921#else
8922 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8923 goto out_err;
8924#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8925 } else if (!strcmp(args[0], "set-log-level")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8926 rule->action = ACT_HTTP_SET_LOGL;
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8927 cur_arg = 1;
8928
8929 if (!*args[cur_arg] ||
8930 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8931 bad_log_level:
8932 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
8933 file, linenum, args[0]);
8934 goto out_err;
8935 }
8936 if (strcmp(args[cur_arg], "silent") == 0)
8937 rule->arg.loglevel = -1;
8938 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
8939 goto bad_log_level;
8940 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8941 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8942 rule->action = *args[0] == 'a' ? ACT_HTTP_ADD_HDR : ACT_HTTP_SET_HDR;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8943 cur_arg = 1;
8944
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]8945 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8946 (*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]8947 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8948 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8949 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8950 }
8951
8952 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8953 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8954 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]8955
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8956 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]8957 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]8958 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
8959 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]8960 free(proxy->conf.lfs_file);
8961 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8962 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8963 cur_arg += 2;
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]8964 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8965 rule->action = args[0][8] == 'h' ? ACT_HTTP_REPLACE_HDR : ACT_HTTP_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8966 cur_arg = 1;
8967
8968 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann92df3702014-06-24 11:10:00 +0200[diff] [blame]8969 (*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]8970 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
8971 file, linenum, args[0]);
8972 goto out_err;
8973 }
8974
8975 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8976 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8977 LIST_INIT(&rule->arg.hdr_add.fmt);
8978
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8979 error = NULL;
8980 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
8981 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
8982 args[cur_arg + 1], error);
8983 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8984 goto out_err;
8985 }
8986
8987 proxy->conf.args.ctx = ARGC_HRQ;
8988 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
8989 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
8990 file, linenum);
8991
8992 free(proxy->conf.lfs_file);
8993 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8994 proxy->conf.lfs_line = proxy->conf.args.line;
8995 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]8996 } else if (strcmp(args[0], "del-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8997 rule->action = ACT_HTTP_DEL_HDR;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]8998 cur_arg = 1;
8999
9000 if (!*args[cur_arg] ||
9001 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9002 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9003 file, linenum, args[0]);
9004 goto out_err;
9005 }
9006
9007 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9008 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9009
9010 proxy->conf.args.ctx = ARGC_HRQ;
9011 free(proxy->conf.lfs_file);
9012 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9013 proxy->conf.lfs_line = proxy->conf.args.line;
9014 cur_arg += 1;
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9015 } else if (strncmp(args[0], "track-sc", 8) == 0 &&
9016 args[0][9] == '\0' && args[0][8] >= '0' &&
Willy Tarreaue1cfc1f2014-10-17 11:53:05 +0200[diff] [blame]9017 args[0][8] < '0' + MAX_SESS_STKCTR) { /* track-sc 0..9 */
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9018 struct sample_expr *expr;
9019 unsigned int where;
9020 char *err = NULL;
9021
9022 cur_arg = 1;
9023 proxy->conf.args.ctx = ARGC_TRK;
9024
9025 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9026 if (!expr) {
9027 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9028 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9029 free(err);
9030 goto out_err;
9031 }
9032
9033 where = 0;
9034 if (proxy->cap & PR_CAP_FE)
9035 where |= SMP_VAL_FE_HRQ_HDR;
9036 if (proxy->cap & PR_CAP_BE)
9037 where |= SMP_VAL_BE_HRQ_HDR;
9038
9039 if (!(expr->fetch->val & where)) {
9040 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule :"
9041 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9042 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9043 args[cur_arg-1], sample_src_names(expr->fetch->use));
9044 free(expr);
9045 goto out_err;
9046 }
9047
9048 if (strcmp(args[cur_arg], "table") == 0) {
9049 cur_arg++;
9050 if (!args[cur_arg]) {
9051 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing table name.\n",
9052 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9053 free(expr);
9054 goto out_err;
9055 }
9056 /* we copy the table name for now, it will be resolved later */
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]9057 rule->arg.trk_ctr.table.n = strdup(args[cur_arg]);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9058 cur_arg++;
9059 }
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]9060 rule->arg.trk_ctr.expr = expr;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9061 rule->action = ACT_ACTION_TRK_SC0 + args[0][8] - '0';
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9062 } else if (strcmp(args[0], "redirect") == 0) {
9063 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]9064 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9065
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9066 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]9067 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9068 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9069 goto out_err;
9070 }
9071
9072 /* this redirect rule might already contain a parsed condition which
9073 * we'll pass to the http-request rule.
9074 */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9075 rule->action = ACT_HTTP_REDIR;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9076 rule->arg.redir = redir;
9077 rule->cond = redir->cond;
9078 redir->cond = NULL;
9079 cur_arg = 2;
9080 return rule;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9081 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9082 /* http-request add-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9083 rule->action = ACT_HTTP_ADD_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9084 /*
9085 * '+ 8' for 'add-acl('
9086 * '- 9' for 'add-acl(' + trailing ')'
9087 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9088 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9089
9090 cur_arg = 1;
9091
9092 if (!*args[cur_arg] ||
9093 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9094 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9095 file, linenum, args[0]);
9096 goto out_err;
9097 }
9098
9099 LIST_INIT(&rule->arg.map.key);
9100 proxy->conf.args.ctx = ARGC_HRQ;
9101 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9102 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9103 file, linenum);
9104 free(proxy->conf.lfs_file);
9105 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9106 proxy->conf.lfs_line = proxy->conf.args.line;
9107 cur_arg += 1;
9108 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9109 /* http-request del-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9110 rule->action = ACT_HTTP_DEL_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9111 /*
9112 * '+ 8' for 'del-acl('
9113 * '- 9' for 'del-acl(' + trailing ')'
9114 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9115 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9116
9117 cur_arg = 1;
9118
9119 if (!*args[cur_arg] ||
9120 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9121 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9122 file, linenum, args[0]);
9123 goto out_err;
9124 }
9125
9126 LIST_INIT(&rule->arg.map.key);
9127 proxy->conf.args.ctx = ARGC_HRQ;
9128 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9129 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9130 file, linenum);
9131 free(proxy->conf.lfs_file);
9132 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9133 proxy->conf.lfs_line = proxy->conf.args.line;
9134 cur_arg += 1;
9135 } else if (strncmp(args[0], "del-map", 7) == 0) {
9136 /* http-request del-map(<reference (map name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9137 rule->action = ACT_HTTP_DEL_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9138 /*
9139 * '+ 8' for 'del-map('
9140 * '- 9' for 'del-map(' + trailing ')'
9141 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9142 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9143
9144 cur_arg = 1;
9145
9146 if (!*args[cur_arg] ||
9147 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9148 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9149 file, linenum, args[0]);
9150 goto out_err;
9151 }
9152
9153 LIST_INIT(&rule->arg.map.key);
9154 proxy->conf.args.ctx = ARGC_HRQ;
9155 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9156 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9157 file, linenum);
9158 free(proxy->conf.lfs_file);
9159 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9160 proxy->conf.lfs_line = proxy->conf.args.line;
9161 cur_arg += 1;
9162 } else if (strncmp(args[0], "set-map", 7) == 0) {
9163 /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9164 rule->action = ACT_HTTP_SET_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9165 /*
9166 * '+ 8' for 'set-map('
9167 * '- 9' for 'set-map(' + trailing ')'
9168 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9169 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9170
9171 cur_arg = 1;
9172
9173 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9174 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9175 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9176 file, linenum, args[0]);
9177 goto out_err;
9178 }
9179
9180 LIST_INIT(&rule->arg.map.key);
9181 LIST_INIT(&rule->arg.map.value);
9182 proxy->conf.args.ctx = ARGC_HRQ;
9183
9184 /* key pattern */
9185 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9186 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9187 file, linenum);
9188
9189 /* value pattern */
9190 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9191 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9192 file, linenum);
9193 free(proxy->conf.lfs_file);
9194 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9195 proxy->conf.lfs_line = proxy->conf.args.line;
9196
9197 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9198 } else if (((custom = action_http_req_custom(args[0])) != NULL)) {
9199 char *errmsg = NULL;
9200 cur_arg = 1;
9201 /* try in the module list */
Thierry FOURNIER5563e4b2015-08-14 19:20:07 +0200[diff] [blame]9202 rule->from = ACT_F_HTTP_REQ;
Thierry FOURNIER85c6c972015-09-22 19:14:35 +0200[diff] [blame]9203 rule->kw = custom;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]9204 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) == ACT_RET_PRS_ERR) {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9205 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9206 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9207 free(errmsg);
9208 goto out_err;
9209 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9210 } else {
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9211 action_build_list(&http_req_keywords.list, &trash);
9212 Alert("parsing [%s:%d]: 'http-request' expects 'allow', 'deny', 'auth', 'redirect', "
9213 "'tarpit', 'add-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', "
William Lallemand2e785f22016-05-25 01:48:42 +0200[diff] [blame]9214 "'set-tos', 'set-mark', 'set-log-level', 'add-acl', 'del-acl', 'del-map', 'set-map'"
9215 "%s%s, but got '%s'%s.\n",
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9216 file, linenum, *trash.str ? ", " : "", trash.str, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9217 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9218 }
9219
9220 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9221 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9222 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9223
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9224 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9225 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
9226 file, linenum, args[0], errmsg);
9227 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9228 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9229 }
9230 rule->cond = cond;
9231 }
9232 else if (*args[cur_arg]) {
9233 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
9234 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9235 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9236 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9237 }
9238
9239 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9240 out_err:
9241 free(rule);
9242 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9243}
9244
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9245/* parse an "http-respose" rule */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9246struct 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]9247{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9248 struct act_rule *rule;
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]9249 struct action_kw *custom = NULL;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9250 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9251 char *error;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9252
9253 rule = calloc(1, sizeof(*rule));
9254 if (!rule) {
9255 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
9256 goto out_err;
9257 }
9258
9259 if (!strcmp(args[0], "allow")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9260 rule->action = ACT_ACTION_ALLOW;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9261 cur_arg = 1;
9262 } else if (!strcmp(args[0], "deny")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9263 rule->action = ACT_ACTION_DENY;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9264 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9265 } else if (!strcmp(args[0], "set-nice")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9266 rule->action = ACT_HTTP_SET_NICE;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9267 cur_arg = 1;
9268
9269 if (!*args[cur_arg] ||
9270 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9271 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
9272 file, linenum, args[0]);
9273 goto out_err;
9274 }
9275 rule->arg.nice = atoi(args[cur_arg]);
9276 if (rule->arg.nice < -1024)
9277 rule->arg.nice = -1024;
9278 else if (rule->arg.nice > 1024)
9279 rule->arg.nice = 1024;
9280 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9281 } else if (!strcmp(args[0], "set-tos")) {
9282#ifdef IP_TOS
9283 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9284 rule->action = ACT_HTTP_SET_TOS;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9285 cur_arg = 1;
9286
9287 if (!*args[cur_arg] ||
9288 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9289 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9290 file, linenum, args[0]);
9291 goto out_err;
9292 }
9293
9294 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9295 if (err && *err != '\0') {
9296 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9297 file, linenum, err, args[0]);
9298 goto out_err;
9299 }
9300 cur_arg++;
9301#else
9302 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9303 goto out_err;
9304#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9305 } else if (!strcmp(args[0], "set-mark")) {
9306#ifdef SO_MARK
9307 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9308 rule->action = ACT_HTTP_SET_MARK;
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9309 cur_arg = 1;
9310
9311 if (!*args[cur_arg] ||
9312 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9313 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9314 file, linenum, args[0]);
9315 goto out_err;
9316 }
9317
9318 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9319 if (err && *err != '\0') {
9320 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9321 file, linenum, err, args[0]);
9322 goto out_err;
9323 }
9324 cur_arg++;
9325 global.last_checks |= LSTCHK_NETADM;
9326#else
9327 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9328 goto out_err;
9329#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9330 } else if (!strcmp(args[0], "set-log-level")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9331 rule->action = ACT_HTTP_SET_LOGL;
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9332 cur_arg = 1;
9333
9334 if (!*args[cur_arg] ||
9335 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9336 bad_log_level:
9337 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
9338 file, linenum, args[0]);
9339 goto out_err;
9340 }
9341 if (strcmp(args[cur_arg], "silent") == 0)
9342 rule->arg.loglevel = -1;
Ruoshan Huangdd016782016-06-15 22:16:03 +0800[diff] [blame]9343 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9344 goto bad_log_level;
9345 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9346 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9347 rule->action = *args[0] == 'a' ? ACT_HTTP_ADD_HDR : ACT_HTTP_SET_HDR;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9348 cur_arg = 1;
9349
9350 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9351 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9352 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9353 file, linenum, args[0]);
9354 goto out_err;
9355 }
9356
9357 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9358 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9359 LIST_INIT(&rule->arg.hdr_add.fmt);
9360
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9361 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9362 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]9363 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9364 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9365 free(proxy->conf.lfs_file);
9366 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9367 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9368 cur_arg += 2;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9369 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9370 rule->action = args[0][8] == 'h' ? ACT_HTTP_REPLACE_HDR : ACT_HTTP_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9371 cur_arg = 1;
9372
9373 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann12cb00b2014-08-08 17:29:06 +0200[diff] [blame]9374 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
9375 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 3 arguments.\n",
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9376 file, linenum, args[0]);
9377 goto out_err;
9378 }
9379
9380 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9381 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9382 LIST_INIT(&rule->arg.hdr_add.fmt);
9383
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9384 error = NULL;
9385 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9386 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9387 args[cur_arg + 1], error);
9388 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9389 goto out_err;
9390 }
9391
9392 proxy->conf.args.ctx = ARGC_HRQ;
9393 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9394 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9395 file, linenum);
9396
9397 free(proxy->conf.lfs_file);
9398 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9399 proxy->conf.lfs_line = proxy->conf.args.line;
9400 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9401 } else if (strcmp(args[0], "del-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9402 rule->action = ACT_HTTP_DEL_HDR;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9403 cur_arg = 1;
9404
9405 if (!*args[cur_arg] ||
9406 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9407 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9408 file, linenum, args[0]);
9409 goto out_err;
9410 }
9411
9412 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9413 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9414
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9415 proxy->conf.args.ctx = ARGC_HRS;
9416 free(proxy->conf.lfs_file);
9417 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9418 proxy->conf.lfs_line = proxy->conf.args.line;
9419 cur_arg += 1;
9420 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9421 /* http-request add-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9422 rule->action = ACT_HTTP_ADD_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9423 /*
9424 * '+ 8' for 'add-acl('
9425 * '- 9' for 'add-acl(' + trailing ')'
9426 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9427 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9428
9429 cur_arg = 1;
9430
9431 if (!*args[cur_arg] ||
9432 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9433 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9434 file, linenum, args[0]);
9435 goto out_err;
9436 }
9437
9438 LIST_INIT(&rule->arg.map.key);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9439 proxy->conf.args.ctx = ARGC_HRS;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9440 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9441 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9442 file, linenum);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9443 free(proxy->conf.lfs_file);
9444 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9445 proxy->conf.lfs_line = proxy->conf.args.line;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9446
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9447 cur_arg += 1;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9448 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9449 /* http-response del-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9450 rule->action = ACT_HTTP_DEL_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9451 /*
9452 * '+ 8' for 'del-acl('
9453 * '- 9' for 'del-acl(' + trailing ')'
9454 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9455 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9456
9457 cur_arg = 1;
9458
9459 if (!*args[cur_arg] ||
9460 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9461 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9462 file, linenum, args[0]);
9463 goto out_err;
9464 }
9465
9466 LIST_INIT(&rule->arg.map.key);
9467 proxy->conf.args.ctx = ARGC_HRS;
9468 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9469 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9470 file, linenum);
9471 free(proxy->conf.lfs_file);
9472 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9473 proxy->conf.lfs_line = proxy->conf.args.line;
9474 cur_arg += 1;
9475 } else if (strncmp(args[0], "del-map", 7) == 0) {
9476 /* http-response del-map(<reference (map name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9477 rule->action = ACT_HTTP_DEL_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9478 /*
9479 * '+ 8' for 'del-map('
9480 * '- 9' for 'del-map(' + trailing ')'
9481 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9482 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9483
9484 cur_arg = 1;
9485
9486 if (!*args[cur_arg] ||
9487 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9488 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9489 file, linenum, args[0]);
9490 goto out_err;
9491 }
9492
9493 LIST_INIT(&rule->arg.map.key);
9494 proxy->conf.args.ctx = ARGC_HRS;
9495 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9496 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9497 file, linenum);
9498 free(proxy->conf.lfs_file);
9499 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9500 proxy->conf.lfs_line = proxy->conf.args.line;
9501 cur_arg += 1;
9502 } else if (strncmp(args[0], "set-map", 7) == 0) {
9503 /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9504 rule->action = ACT_HTTP_SET_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9505 /*
9506 * '+ 8' for 'set-map('
9507 * '- 9' for 'set-map(' + trailing ')'
9508 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9509 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9510
9511 cur_arg = 1;
9512
9513 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9514 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9515 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9516 file, linenum, args[0]);
9517 goto out_err;
9518 }
9519
9520 LIST_INIT(&rule->arg.map.key);
9521 LIST_INIT(&rule->arg.map.value);
9522
9523 proxy->conf.args.ctx = ARGC_HRS;
9524
9525 /* key pattern */
9526 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9527 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9528 file, linenum);
9529
9530 /* value pattern */
9531 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9532 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9533 file, linenum);
9534
9535 free(proxy->conf.lfs_file);
9536 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9537 proxy->conf.lfs_line = proxy->conf.args.line;
9538
9539 cur_arg += 2;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]9540 } else if (strcmp(args[0], "redirect") == 0) {
9541 struct redirect_rule *redir;
9542 char *errmsg = NULL;
9543
9544 if ((redir = http_parse_redirect_rule(file, linenum, proxy, (const char **)args + 1, &errmsg, 1, 1)) == NULL) {
9545 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9546 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9547 goto out_err;
9548 }
9549
9550 /* this redirect rule might already contain a parsed condition which
9551 * we'll pass to the http-request rule.
9552 */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9553 rule->action = ACT_HTTP_REDIR;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]9554 rule->arg.redir = redir;
9555 rule->cond = redir->cond;
9556 redir->cond = NULL;
9557 cur_arg = 2;
9558 return rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9559 } else if (((custom = action_http_res_custom(args[0])) != NULL)) {
9560 char *errmsg = NULL;
9561 cur_arg = 1;
9562 /* try in the module list */
Thierry FOURNIER5563e4b2015-08-14 19:20:07 +0200[diff] [blame]9563 rule->from = ACT_F_HTTP_RES;
Thierry FOURNIER85c6c972015-09-22 19:14:35 +0200[diff] [blame]9564 rule->kw = custom;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]9565 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) == ACT_RET_PRS_ERR) {
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9566 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9567 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9568 free(errmsg);
9569 goto out_err;
9570 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9571 } else {
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9572 action_build_list(&http_res_keywords.list, &trash);
9573 Alert("parsing [%s:%d]: 'http-response' expects 'allow', 'deny', 'redirect', "
9574 "'add-header', 'del-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', "
William Lallemand2e785f22016-05-25 01:48:42 +0200[diff] [blame]9575 "'set-tos', 'set-mark', 'set-log-level', 'add-acl', 'del-acl', 'del-map', 'set-map'"
9576 "%s%s, but got '%s'%s.\n",
Thierry FOURNIERab95e652015-10-02 08:24:51 +0200[diff] [blame]9577 file, linenum, *trash.str ? ", " : "", trash.str, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9578 goto out_err;
9579 }
9580
9581 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9582 struct acl_cond *cond;
9583 char *errmsg = NULL;
9584
9585 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9586 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
9587 file, linenum, args[0], errmsg);
9588 free(errmsg);
9589 goto out_err;
9590 }
9591 rule->cond = cond;
9592 }
9593 else if (*args[cur_arg]) {
9594 Alert("parsing [%s:%d]: 'http-response %s' expects"
9595 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9596 file, linenum, args[0], args[cur_arg]);
9597 goto out_err;
9598 }
9599
9600 return rule;
9601 out_err:
9602 free(rule);
9603 return NULL;
9604}
9605
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9606/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9607 * 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]9608 * dynamic log-format rule instead of a static string. Parameter <dir> indicates
9609 * the direction of the rule, and equals 0 for request, non-zero for responses.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9610 */
9611struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9612 const char **args, char **errmsg, int use_fmt, int dir)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9613{
9614 struct redirect_rule *rule;
9615 int cur_arg;
9616 int type = REDIRECT_TYPE_NONE;
9617 int code = 302;
9618 const char *destination = NULL;
9619 const char *cookie = NULL;
9620 int cookie_set = 0;
9621 unsigned int flags = REDIRECT_FLAG_NONE;
9622 struct acl_cond *cond = NULL;
9623
9624 cur_arg = 0;
9625 while (*(args[cur_arg])) {
9626 if (strcmp(args[cur_arg], "location") == 0) {
9627 if (!*args[cur_arg + 1])
9628 goto missing_arg;
9629
9630 type = REDIRECT_TYPE_LOCATION;
9631 cur_arg++;
9632 destination = args[cur_arg];
9633 }
9634 else if (strcmp(args[cur_arg], "prefix") == 0) {
9635 if (!*args[cur_arg + 1])
9636 goto missing_arg;
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9637 type = REDIRECT_TYPE_PREFIX;
9638 cur_arg++;
9639 destination = args[cur_arg];
9640 }
9641 else if (strcmp(args[cur_arg], "scheme") == 0) {
9642 if (!*args[cur_arg + 1])
9643 goto missing_arg;
9644
9645 type = REDIRECT_TYPE_SCHEME;
9646 cur_arg++;
9647 destination = args[cur_arg];
9648 }
9649 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
9650 if (!*args[cur_arg + 1])
9651 goto missing_arg;
9652
9653 cur_arg++;
9654 cookie = args[cur_arg];
9655 cookie_set = 1;
9656 }
9657 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
9658 if (!*args[cur_arg + 1])
9659 goto missing_arg;
9660
9661 cur_arg++;
9662 cookie = args[cur_arg];
9663 cookie_set = 0;
9664 }
9665 else if (strcmp(args[cur_arg], "code") == 0) {
9666 if (!*args[cur_arg + 1])
9667 goto missing_arg;
9668
9669 cur_arg++;
9670 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9671 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9672 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9673 "'%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]9674 args[cur_arg - 1], args[cur_arg]);
9675 return NULL;
9676 }
9677 }
9678 else if (!strcmp(args[cur_arg],"drop-query")) {
9679 flags |= REDIRECT_FLAG_DROP_QS;
9680 }
9681 else if (!strcmp(args[cur_arg],"append-slash")) {
9682 flags |= REDIRECT_FLAG_APPEND_SLASH;
9683 }
9684 else if (strcmp(args[cur_arg], "if") == 0 ||
9685 strcmp(args[cur_arg], "unless") == 0) {
9686 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
9687 if (!cond) {
9688 memprintf(errmsg, "error in condition: %s", *errmsg);
9689 return NULL;
9690 }
9691 break;
9692 }
9693 else {
9694 memprintf(errmsg,
9695 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
9696 args[cur_arg]);
9697 return NULL;
9698 }
9699 cur_arg++;
9700 }
9701
9702 if (type == REDIRECT_TYPE_NONE) {
9703 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
9704 return NULL;
9705 }
9706
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9707 if (dir && type != REDIRECT_TYPE_LOCATION) {
9708 memprintf(errmsg, "response only supports redirect type 'location'");
9709 return NULL;
9710 }
9711
Vincent Bernat3c2f2f22016-04-03 13:48:42 +0200[diff] [blame]9712 rule = calloc(1, sizeof(*rule));
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9713 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]9714 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9715
9716 if (!use_fmt) {
9717 /* old-style static redirect rule */
9718 rule->rdr_str = strdup(destination);
9719 rule->rdr_len = strlen(destination);
9720 }
9721 else {
9722 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9723
9724 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
9725 * if prefix == "/", we don't want to add anything, otherwise it
9726 * makes it hard for the user to configure a self-redirection.
9727 */
Godbachd9722032014-12-18 15:44:58 +0800[diff] [blame]9728 curproxy->conf.args.ctx = ARGC_RDR;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9729 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9730 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9731 dir ? (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRS_HDR : SMP_VAL_BE_HRS_HDR
9732 : (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]9733 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9734 free(curproxy->conf.lfs_file);
9735 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
9736 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9737 }
9738 }
9739
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9740 if (cookie) {
9741 /* depending on cookie_set, either we want to set the cookie, or to clear it.
9742 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
9743 */
9744 rule->cookie_len = strlen(cookie);
9745 if (cookie_set) {
9746 rule->cookie_str = malloc(rule->cookie_len + 10);
9747 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9748 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
9749 rule->cookie_len += 9;
9750 } else {
9751 rule->cookie_str = malloc(rule->cookie_len + 21);
9752 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9753 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
9754 rule->cookie_len += 20;
9755 }
9756 }
9757 rule->type = type;
9758 rule->code = code;
9759 rule->flags = flags;
9760 LIST_INIT(&rule->list);
9761 return rule;
9762
9763 missing_arg:
9764 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
9765 return NULL;
9766}
9767
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9768/************************************************************************/
9769/* The code below is dedicated to ACL parsing and matching */
9770/************************************************************************/
9771
9772
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9773/* This function ensures that the prerequisites for an L7 fetch are ready,
9774 * which means that a request or response is ready. If some data is missing,
9775 * 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]9776 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
9777 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9778 *
9779 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9780 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
9781 * decide whether or not an HTTP message is present ;
9782 * 0 if the requested data cannot be fetched or if it is certain that
9783 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9784 * 1 if an HTTP message is ready
9785 */
James Rosewell91a41cb2015-09-18 17:11:16 +0100[diff] [blame]9786int smp_prefetch_http(struct proxy *px, struct stream *s, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9787 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9788{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9789 struct http_txn *txn;
9790 struct http_msg *msg;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9791
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]9792 /* Note: it is possible that <s> is NULL when called before stream
9793 * initialization (eg: tcp-request connection), so this function is the
9794 * one responsible for guarding against this case for all HTTP users.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9795 */
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9796 if (!s)
9797 return 0;
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]9798
Thierry FOURNIERed08d6a2015-09-24 08:40:18 +0200[diff] [blame]9799 if (!s->txn) {
9800 if (unlikely(!http_alloc_txn(s)))
9801 return 0; /* not enough memory */
9802 http_init_txn(s);
9803 }
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9804 txn = s->txn;
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9805 msg = &txn->req;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9806
9807 /* Check for a dependency on a request */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9808 smp->data.type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9809
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9810 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9811 /* If the buffer does not leave enough free space at the end,
9812 * we must first realign it.
9813 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9814 if (s->req.buf->p > s->req.buf->data &&
9815 s->req.buf->i + s->req.buf->p > s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)
9816 buffer_slow_realign(s->req.buf);
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9817
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9818 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]9819 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9820 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9821
9822 /* Try to decode HTTP request */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9823 if (likely(msg->next < s->req.buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9824 http_msg_analyzer(msg, &txn->hdr_idx);
9825
9826 /* Still no valid request ? */
9827 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]9828 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9829 buffer_full(s->req.buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9830 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9831 }
9832 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9833 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9834 return 0;
9835 }
9836
9837 /* OK we just got a valid HTTP request. We have some minor
9838 * preparation to perform so that further checks can rely
9839 * on HTTP tests.
9840 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9841
9842 /* If the request was parsed but was too large, we must absolutely
9843 * return an error so that it is not processed. At the moment this
9844 * cannot happen, but if the parsers are to change in the future,
9845 * we want this check to be maintained.
9846 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9847 if (unlikely(s->req.buf->i + s->req.buf->p >
9848 s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9849 msg->msg_state = HTTP_MSG_ERROR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9850 smp->data.u.sint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9851 return 1;
9852 }
9853
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9854 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9855 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]9856 s->flags |= SF_REDIRECTABLE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9857
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9858 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
9859 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9860 }
9861
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9862 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9863 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9864 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9865
9866 /* otherwise everything's ready for the request */
9867 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9868 else {
9869 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9870 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
9871 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9872 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9873 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9874 }
9875
9876 /* everything's OK */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9877 smp->data.u.sint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9878 return 1;
9879}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9880
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9881/* 1. Check on METHOD
9882 * We use the pre-parsed method if it is known, and store its number as an
9883 * integer. If it is unknown, we use the pointer and the length.
9884 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]9885static int pat_parse_meth(const char *text, struct pattern *pattern, int mflags, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9886{
9887 int len, meth;
9888
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]9889 len = strlen(text);
9890 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9891
9892 pattern->val.i = meth;
9893 if (meth == HTTP_METH_OTHER) {
Willy Tarreau912c1192014-08-29 15:15:50 +0200[diff] [blame]9894 pattern->ptr.str = (char *)text;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9895 pattern->len = len;
9896 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9897 else {
9898 pattern->ptr.str = NULL;
9899 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9900 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9901 return 1;
9902}
9903
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9904/* This function fetches the method of current HTTP request and stores
9905 * it in the global pattern struct as a chunk. There are two possibilities :
9906 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
9907 * in <len> and <ptr> is NULL ;
9908 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
9909 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9910 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9911 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9912static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9913smp_fetch_meth(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9914{
9915 int meth;
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]9916 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9917
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9918 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9919
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]9920 txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9921 meth = txn->meth;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9922 smp->data.type = SMP_T_METH;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9923 smp->data.u.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9924 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9925 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
9926 /* ensure the indexes are not affected */
9927 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9928 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9929 smp->data.u.meth.str.len = txn->req.sl.rq.m_l;
9930 smp->data.u.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9931 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9932 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9933 return 1;
9934}
9935
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9936/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9937static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9938{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9939 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9940 struct pattern_list *lst;
9941 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9942
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9943 list_for_each_entry(lst, &expr->patterns, list) {
9944 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9945
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9946 /* well-known method */
9947 if (pattern->val.i != HTTP_METH_OTHER) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9948 if (smp->data.u.meth.meth == pattern->val.i)
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9949 return pattern;
9950 else
9951 continue;
9952 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9953
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9954 /* Other method, we must compare the strings */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9955 if (pattern->len != smp->data.u.meth.str.len)
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9956 continue;
9957
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]9958 icase = expr->mflags & PAT_MF_IGNORE_CASE;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9959 if ((icase && strncasecmp(pattern->ptr.str, smp->data.u.meth.str.str, smp->data.u.meth.str.len) == 0) ||
9960 (!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]9961 return pattern;
9962 }
9963 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9964}
9965
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9966static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9967smp_fetch_rqver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9968{
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]9969 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9970 char *ptr;
9971 int len;
9972
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9973 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9974
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]9975 txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9976 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9977 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9978
9979 while ((len-- > 0) && (*ptr++ != '/'));
9980 if (len <= 0)
9981 return 0;
9982
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9983 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]9984 smp->data.u.str.str = ptr;
9985 smp->data.u.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9986
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9987 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9988 return 1;
9989}
9990
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9991static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]9992smp_fetch_stver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9993{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]9994 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9995 char *ptr;
9996 int len;
9997
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9998 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9999
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10000 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10001 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10002 return 0;
10003
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10004 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10005 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10006
10007 while ((len-- > 0) && (*ptr++ != '/'));
10008 if (len <= 0)
10009 return 0;
10010
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10011 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10012 smp->data.u.str.str = ptr;
10013 smp->data.u.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10014
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10015 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10016 return 1;
10017}
10018
10019/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10020static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10021smp_fetch_stcode(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10022{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10023 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10024 char *ptr;
10025 int len;
10026
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10027 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10028
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10029 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10030 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10031 return 0;
10032
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10033 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10034 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10035
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10036 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10037 smp->data.u.sint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10038 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10039 return 1;
10040}
10041
Thierry Fournierf4011dd2016-03-29 17:23:51 +0200[diff] [blame]10042static int
10043smp_fetch_uniqueid(const struct arg *args, struct sample *smp, const char *kw, void *private)
10044{
10045 if (LIST_ISEMPTY(&smp->sess->fe->format_unique_id))
10046 return 0;
10047
10048 if (!smp->strm->unique_id) {
10049 if ((smp->strm->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
10050 return 0;
10051 smp->strm->unique_id[0] = '\0';
10052 }
10053 smp->data.u.str.len = build_logline(smp->strm, smp->strm->unique_id,
10054 UNIQUEID_LEN, &smp->sess->fe->format_unique_id);
10055
10056 smp->data.type = SMP_T_STR;
10057 smp->data.u.str.str = smp->strm->unique_id;
10058 smp->flags = SMP_F_CONST;
10059 return 1;
10060}
10061
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10062/* returns the longest available part of the body. This requires that the body
10063 * has been waited for using http-buffer-request.
10064 */
10065static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10066smp_fetch_body(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10067{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10068 struct http_msg *msg;
10069 unsigned long len;
10070 unsigned long block1;
10071 char *body;
10072 struct chunk *temp;
10073
10074 CHECK_HTTP_MESSAGE_FIRST();
10075
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10076 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10077 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10078 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10079 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10080
10081 len = http_body_bytes(msg);
10082 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
10083
10084 block1 = len;
10085 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
10086 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
10087
10088 if (block1 == len) {
10089 /* buffer is not wrapped (or empty) */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10090 smp->data.type = SMP_T_BIN;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10091 smp->data.u.str.str = body;
10092 smp->data.u.str.len = len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10093 smp->flags = SMP_F_VOL_TEST | SMP_F_CONST;
10094 }
10095 else {
10096 /* buffer is wrapped, we need to defragment it */
10097 temp = get_trash_chunk();
10098 memcpy(temp->str, body, block1);
10099 memcpy(temp->str + block1, msg->chn->buf->data, len - block1);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10100 smp->data.type = SMP_T_BIN;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10101 smp->data.u.str.str = temp->str;
10102 smp->data.u.str.len = len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10103 smp->flags = SMP_F_VOL_TEST;
10104 }
10105 return 1;
10106}
10107
10108
10109/* returns the available length of the body. This requires that the body
10110 * has been waited for using http-buffer-request.
10111 */
10112static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10113smp_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]10114{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10115 struct http_msg *msg;
10116
10117 CHECK_HTTP_MESSAGE_FIRST();
10118
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10119 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10120 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10121 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10122 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10123
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10124 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10125 smp->data.u.sint = http_body_bytes(msg);
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10126
10127 smp->flags = SMP_F_VOL_TEST;
10128 return 1;
10129}
10130
10131
10132/* returns the advertised length of the body, or the advertised size of the
10133 * chunks available in the buffer. This requires that the body has been waited
10134 * for using http-buffer-request.
10135 */
10136static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10137smp_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]10138{
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10139 struct http_msg *msg;
10140
10141 CHECK_HTTP_MESSAGE_FIRST();
10142
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10143 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10144 msg = &smp->strm->txn->req;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10145 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]10146 msg = &smp->strm->txn->rsp;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10147
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10148 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10149 smp->data.u.sint = msg->body_len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10150
10151 smp->flags = SMP_F_VOL_TEST;
10152 return 1;
10153}
10154
10155
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10156/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10157static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10158smp_fetch_url(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10159{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10160 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10161
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10162 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10163
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10164 txn = smp->strm->txn;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10165 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10166 smp->data.u.str.len = txn->req.sl.rq.u_l;
10167 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]10168 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10169 return 1;
10170}
10171
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10172static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10173smp_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]10174{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10175 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10176 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10177
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10178 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10179
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10180 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10181 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]10182 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]10183 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10184
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10185 smp->data.type = SMP_T_IPV4;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10186 smp->data.u.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10187 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10188 return 1;
10189}
10190
10191static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10192smp_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]10193{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10194 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10195 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10196
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10197 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10198
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10199 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10200 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]10201 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
10202 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10203
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10204 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10205 smp->data.u.sint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]10206 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10207 return 1;
10208}
10209
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10210/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10211 * Accepts an optional argument of type string containing the header field name,
10212 * and an optional argument of type signed or unsigned integer to request an
10213 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10214 * headers are considered from the first one. It does not stop on commas and
10215 * returns full lines instead (useful for User-Agent or Date for example).
10216 */
10217static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10218smp_fetch_fhdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10219{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10220 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10221 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10222 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10223 int occ = 0;
10224 const char *name_str = NULL;
10225 int name_len = 0;
10226
10227 if (!ctx) {
10228 /* first call */
10229 ctx = &static_hdr_ctx;
10230 ctx->idx = 0;
10231 smp->ctx.a[0] = ctx;
10232 }
10233
10234 if (args) {
10235 if (args[0].type != ARGT_STR)
10236 return 0;
10237 name_str = args[0].data.str.str;
10238 name_len = args[0].data.str.len;
10239
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10240 if (args[1].type == ARGT_SINT)
10241 occ = args[1].data.sint;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10242 }
10243
10244 CHECK_HTTP_MESSAGE_FIRST();
10245
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10246 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10247 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]10248
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10249 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
10250 /* search for header from the beginning */
10251 ctx->idx = 0;
10252
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10253 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10254 /* no explicit occurrence and single fetch => last header by default */
10255 occ = -1;
10256
10257 if (!occ)
10258 /* prepare to report multiple occurrences for ACL fetches */
10259 smp->flags |= SMP_F_NOT_LAST;
10260
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10261 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10262 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10263 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]10264 return 1;
10265
10266 smp->flags &= ~SMP_F_NOT_LAST;
10267 return 0;
10268}
10269
10270/* 6. Check on HTTP header count. The number of occurrences is returned.
10271 * Accepts exactly 1 argument of type string. It does not stop on commas and
10272 * returns full lines instead (useful for User-Agent or Date for example).
10273 */
10274static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10275smp_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]10276{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10277 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10278 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10279 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10280 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10281 const char *name = NULL;
10282 int len = 0;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10283
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10284 if (args && args->type == ARGT_STR) {
10285 name = args->data.str.str;
10286 len = args->data.str.len;
10287 }
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10288
10289 CHECK_HTTP_MESSAGE_FIRST();
10290
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10291 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10292 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]10293
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10294 ctx.idx = 0;
10295 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10296 while (http_find_full_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10297 cnt++;
10298
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10299 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10300 smp->data.u.sint = cnt;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10301 smp->flags = SMP_F_VOL_HDR;
10302 return 1;
10303}
10304
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10305static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10306smp_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]10307{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10308 struct hdr_idx *idx;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10309 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10310 const struct http_msg *msg;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10311 struct chunk *temp;
10312 char del = ',';
10313
10314 if (args && args->type == ARGT_STR)
10315 del = *args[0].data.str.str;
10316
10317 CHECK_HTTP_MESSAGE_FIRST();
10318
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10319 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10320 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]10321
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10322 temp = get_trash_chunk();
10323
10324 ctx.idx = 0;
10325 while (http_find_next_header(msg->chn->buf->p, idx, &ctx)) {
10326 if (temp->len)
10327 temp->str[temp->len++] = del;
10328 memcpy(temp->str + temp->len, ctx.line, ctx.del);
10329 temp->len += ctx.del;
10330 }
10331
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10332 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10333 smp->data.u.str.str = temp->str;
10334 smp->data.u.str.len = temp->len;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10335 smp->flags = SMP_F_VOL_HDR;
10336 return 1;
10337}
10338
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10339/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10340 * Accepts an optional argument of type string containing the header field name,
10341 * and an optional argument of type signed or unsigned integer to request an
10342 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10343 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10344 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10345static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10346smp_fetch_hdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10347{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10348 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10349 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10350 const struct http_msg *msg;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10351 int occ = 0;
10352 const char *name_str = NULL;
10353 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10354
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10355 if (!ctx) {
10356 /* first call */
10357 ctx = &static_hdr_ctx;
10358 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]10359 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10360 }
10361
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10362 if (args) {
10363 if (args[0].type != ARGT_STR)
10364 return 0;
10365 name_str = args[0].data.str.str;
10366 name_len = args[0].data.str.len;
10367
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10368 if (args[1].type == ARGT_SINT)
10369 occ = args[1].data.sint;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10370 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10371
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10372 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10373
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10374 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10375 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]10376
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10377 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10378 /* search for header from the beginning */
10379 ctx->idx = 0;
10380
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10381 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10382 /* no explicit occurrence and single fetch => last header by default */
10383 occ = -1;
10384
10385 if (!occ)
10386 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10387 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]10388
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10389 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10390 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10391 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]10392 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10393
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10394 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10395 return 0;
10396}
10397
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10398/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10399 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10400 */
10401static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10402smp_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]10403{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10404 struct hdr_idx *idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10405 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10406 const struct http_msg *msg;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10407 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10408 const char *name = NULL;
10409 int len = 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10410
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10411 if (args && args->type == ARGT_STR) {
10412 name = args->data.str.str;
10413 len = args->data.str.len;
10414 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10415
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10416 CHECK_HTTP_MESSAGE_FIRST();
10417
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10418 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10419 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]10420
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10421 ctx.idx = 0;
10422 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10423 while (http_find_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10424 cnt++;
10425
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10426 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10427 smp->data.u.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10428 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10429 return 1;
10430}
10431
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10432/* Fetch an HTTP header's integer value. The integer value is returned. It
10433 * takes a mandatory argument of type string and an optional one of type int
10434 * to designate a specific occurrence. It returns an unsigned integer, which
10435 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10436 */
10437static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10438smp_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]10439{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10440 int ret = smp_fetch_hdr(args, smp, kw, private);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10441
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10442 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10443 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10444 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]10445 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10446
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10447 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10448}
10449
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10450/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
10451 * and an optional one of type int to designate a specific occurrence.
10452 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10453 */
10454static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10455smp_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]10456{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10457 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10458
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10459 while ((ret = smp_fetch_hdr(args, smp, kw, private)) > 0) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10460 if (url2ipv4((char *)smp->data.u.str.str, &smp->data.u.ipv4)) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10461 smp->data.type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10462 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10463 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10464 struct chunk *temp = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10465 if (smp->data.u.str.len < temp->size - 1) {
10466 memcpy(temp->str, smp->data.u.str.str, smp->data.u.str.len);
10467 temp->str[smp->data.u.str.len] = '\0';
10468 if (inet_pton(AF_INET6, temp->str, &smp->data.u.ipv6)) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10469 smp->data.type = SMP_T_IPV6;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10470 break;
10471 }
10472 }
10473 }
10474
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10475 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10476 if (!(smp->flags & SMP_F_NOT_LAST))
10477 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10478 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10479 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10480}
10481
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10482/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
10483 * the first '/' after the possible hostname, and ends before the possible '?'.
10484 */
10485static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10486smp_fetch_path(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10487{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10488 struct http_txn *txn;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10489 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10490
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10491 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10492
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10493 txn = smp->strm->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10494 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]10495 ptr = http_get_path(txn);
10496 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10497 return 0;
10498
10499 /* OK, we got the '/' ! */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10500 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10501 smp->data.u.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10502
10503 while (ptr < end && *ptr != '?')
10504 ptr++;
10505
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10506 smp->data.u.str.len = ptr - smp->data.u.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10507 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10508 return 1;
10509}
10510
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10511/* This produces a concatenation of the first occurrence of the Host header
10512 * followed by the path component if it begins with a slash ('/'). This means
10513 * that '*' will not be added, resulting in exactly the first Host entry.
10514 * If no Host header is found, then the path is returned as-is. The returned
10515 * 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]10516 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10517 */
10518static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10519smp_fetch_base(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10520{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10521 struct http_txn *txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10522 char *ptr, *end, *beg;
10523 struct hdr_ctx ctx;
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10524 struct chunk *temp;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10525
10526 CHECK_HTTP_MESSAGE_FIRST();
10527
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10528 txn = smp->strm->txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10529 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10530 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]10531 return smp_fetch_path(args, smp, kw, private);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10532
10533 /* 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]10534 temp = get_trash_chunk();
10535 memcpy(temp->str, ctx.line + ctx.val, ctx.vlen);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10536 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10537 smp->data.u.str.str = temp->str;
10538 smp->data.u.str.len = ctx.vlen;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10539
10540 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10541 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]10542 beg = http_get_path(txn);
10543 if (!beg)
10544 beg = end;
10545
10546 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10547
10548 if (beg < ptr && *beg == '/') {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10549 memcpy(smp->data.u.str.str + smp->data.u.str.len, beg, ptr - beg);
10550 smp->data.u.str.len += ptr - beg;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10551 }
10552
10553 smp->flags = SMP_F_VOL_1ST;
10554 return 1;
10555}
10556
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10557/* This produces a 32-bit hash of the concatenation of the first occurrence of
10558 * the Host header followed by the path component if it begins with a slash ('/').
10559 * This means that '*' will not be added, resulting in exactly the first Host
10560 * 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]10561 * is hashed using the path hash followed by a full avalanche hash and provides a
10562 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10563 * high-traffic sites without having to store whole paths.
10564 */
Thierry FOURNIER055b9d52014-07-15 16:11:07 +0200[diff] [blame]10565int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10566smp_fetch_base32(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10567{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10568 struct http_txn *txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10569 struct hdr_ctx ctx;
10570 unsigned int hash = 0;
10571 char *ptr, *beg, *end;
10572 int len;
10573
10574 CHECK_HTTP_MESSAGE_FIRST();
10575
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10576 txn = smp->strm->txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10577 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10578 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]10579 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10580 ptr = ctx.line + ctx.val;
10581 len = ctx.vlen;
10582 while (len--)
10583 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10584 }
10585
10586 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10587 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]10588 beg = http_get_path(txn);
10589 if (!beg)
10590 beg = end;
10591
10592 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10593
10594 if (beg < ptr && *beg == '/') {
10595 while (beg < ptr)
10596 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10597 }
10598 hash = full_hash(hash);
10599
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10600 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10601 smp->data.u.sint = hash;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10602 smp->flags = SMP_F_VOL_1ST;
10603 return 1;
10604}
10605
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10606/* 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]10607 * path as returned by smp_fetch_base32(). The idea is to have per-source and
10608 * per-path counters. The result is a binary block from 8 to 20 bytes depending
10609 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10610 * that in environments where IPv6 is insignificant, truncating the output to
10611 * 8 bytes would still work.
10612 */
10613static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10614smp_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]10615{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10616 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10617 struct connection *cli_conn = objt_conn(smp->sess->origin);
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10618
10619 if (!cli_conn)
10620 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10621
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10622 if (!smp_fetch_base32(args, smp, kw, private))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10623 return 0;
10624
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10625 temp = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10626 *(unsigned int *)temp->str = htonl(smp->data.u.sint);
Willy Tarreau5ad6e1d2014-07-15 21:34:06 +0200[diff] [blame]10627 temp->len += sizeof(unsigned int);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10628
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10629 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10630 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10631 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]10632 temp->len += 4;
10633 break;
10634 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10635 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]10636 temp->len += 16;
10637 break;
10638 default:
10639 return 0;
10640 }
10641
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10642 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10643 smp->data.type = SMP_T_BIN;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10644 return 1;
10645}
10646
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10647/* Extracts the query string, which comes after the question mark '?'. If no
10648 * question mark is found, nothing is returned. Otherwise it returns a sample
10649 * of type string carrying the whole query string.
10650 */
10651static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10652smp_fetch_query(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10653{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10654 struct http_txn *txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10655 char *ptr, *end;
10656
10657 CHECK_HTTP_MESSAGE_FIRST();
10658
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10659 txn = smp->strm->txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10660 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
10661 end = ptr + txn->req.sl.rq.u_l;
10662
10663 /* look up the '?' */
10664 do {
10665 if (ptr == end)
10666 return 0;
10667 } while (*ptr++ != '?');
10668
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10669 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10670 smp->data.u.str.str = ptr;
10671 smp->data.u.str.len = end - ptr;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10672 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
10673 return 1;
10674}
10675
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10676static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10677smp_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]10678{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10679 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
10680 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
10681 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10682
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10683 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10684
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10685 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10686 smp->data.u.sint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10687 return 1;
10688}
10689
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10690/* return a valid test if the current request is the first one on the connection */
10691static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10692smp_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]10693{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10694 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10695 smp->data.u.sint = !(smp->strm->txn->flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10696 return 1;
10697}
10698
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10699/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10700static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10701smp_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]10702{
10703
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10704 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10705 return 0;
10706
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10707 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10708
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10709 if (!get_http_auth(smp->strm))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10710 return 0;
10711
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10712 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10713 smp->data.u.sint = check_user(args->data.usr, smp->strm->txn->auth.user,
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10714 smp->strm->txn->auth.pass);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10715 return 1;
10716}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10717
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10718/* Accepts exactly 1 argument of type userlist */
10719static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10720smp_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]10721{
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10722 if (!args || args->type != ARGT_USR)
10723 return 0;
10724
10725 CHECK_HTTP_MESSAGE_FIRST();
10726
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10727 if (!get_http_auth(smp->strm))
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10728 return 0;
10729
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10730 /* if the user does not belong to the userlist or has a wrong password,
10731 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10732 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10733 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10734 if (!check_user(args->data.usr, smp->strm->txn->auth.user,
10735 smp->strm->txn->auth.pass))
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10736 return 0;
10737
10738 /* pat_match_auth() will need the user list */
10739 smp->ctx.a[0] = args->data.usr;
10740
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10741 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10742 smp->flags = SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10743 smp->data.u.str.str = smp->strm->txn->auth.user;
10744 smp->data.u.str.len = strlen(smp->strm->txn->auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10745
10746 return 1;
10747}
10748
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10749/* Try to find the next occurrence of a cookie name in a cookie header value.
10750 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
10751 * the cookie value is returned into *value and *value_l, and the function
10752 * returns a pointer to the next pointer to search from if the value was found.
10753 * Otherwise if the cookie was not found, NULL is returned and neither value
10754 * nor value_l are touched. The input <hdr> string should first point to the
10755 * header's value, and the <hdr_end> pointer must point to the first character
10756 * not part of the value. <list> must be non-zero if value may represent a list
10757 * of values (cookie headers). This makes it faster to abort parsing when no
10758 * list is expected.
10759 */
David Carlier4686f792015-09-25 14:10:50 +0100[diff] [blame]10760char *
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10761extract_cookie_value(char *hdr, const char *hdr_end,
10762 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]10763 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10764{
10765 char *equal, *att_end, *att_beg, *val_beg, *val_end;
10766 char *next;
10767
10768 /* we search at least a cookie name followed by an equal, and more
10769 * generally something like this :
10770 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
10771 */
10772 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
10773 /* Iterate through all cookies on this line */
10774
10775 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
10776 att_beg++;
10777
10778 /* find att_end : this is the first character after the last non
10779 * space before the equal. It may be equal to hdr_end.
10780 */
10781 equal = att_end = att_beg;
10782
10783 while (equal < hdr_end) {
10784 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
10785 break;
10786 if (http_is_spht[(unsigned char)*equal++])
10787 continue;
10788 att_end = equal;
10789 }
10790
10791 /* here, <equal> points to '=', a delimitor or the end. <att_end>
10792 * is between <att_beg> and <equal>, both may be identical.
10793 */
10794
10795 /* look for end of cookie if there is an equal sign */
10796 if (equal < hdr_end && *equal == '=') {
10797 /* look for the beginning of the value */
10798 val_beg = equal + 1;
10799 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
10800 val_beg++;
10801
10802 /* find the end of the value, respecting quotes */
10803 next = find_cookie_value_end(val_beg, hdr_end);
10804
10805 /* make val_end point to the first white space or delimitor after the value */
10806 val_end = next;
10807 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
10808 val_end--;
10809 } else {
10810 val_beg = val_end = next = equal;
10811 }
10812
10813 /* We have nothing to do with attributes beginning with '$'. However,
10814 * they will automatically be removed if a header before them is removed,
10815 * since they're supposed to be linked together.
10816 */
10817 if (*att_beg == '$')
10818 continue;
10819
10820 /* Ignore cookies with no equal sign */
10821 if (equal == next)
10822 continue;
10823
10824 /* Now we have the cookie name between att_beg and att_end, and
10825 * its value between val_beg and val_end.
10826 */
10827
10828 if (att_end - att_beg == cookie_name_l &&
10829 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
10830 /* let's return this value and indicate where to go on from */
10831 *value = val_beg;
10832 *value_l = val_end - val_beg;
10833 return next + 1;
10834 }
10835
10836 /* Set-Cookie headers only have the name in the first attr=value part */
10837 if (!list)
10838 break;
10839 }
10840
10841 return NULL;
10842}
10843
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10844/* Fetch a captured HTTP request header. The index is the position of
10845 * the "capture" option in the configuration file
10846 */
10847static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10848smp_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]10849{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10850 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10851 int idx;
10852
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10853 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10854 return 0;
10855
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10856 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10857
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10858 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]10859 return 0;
10860
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10861 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10862 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10863 smp->data.u.str.str = smp->strm->req_cap[idx];
10864 smp->data.u.str.len = strlen(smp->strm->req_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10865
10866 return 1;
10867}
10868
10869/* Fetch a captured HTTP response header. The index is the position of
10870 * the "capture" option in the configuration file
10871 */
10872static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10873smp_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]10874{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10875 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10876 int idx;
10877
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10878 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10879 return 0;
10880
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10881 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10882
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10883 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]10884 return 0;
10885
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10886 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10887 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10888 smp->data.u.str.str = smp->strm->res_cap[idx];
10889 smp->data.u.str.len = strlen(smp->strm->res_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10890
10891 return 1;
10892}
10893
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10894/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
10895static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10896smp_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]10897{
10898 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10899 struct http_txn *txn = smp->strm->txn;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10900 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10901
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10902 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10903 return 0;
10904
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10905 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10906
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10907 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10908 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10909
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10910 temp = get_trash_chunk();
10911 temp->str = txn->uri;
10912 temp->len = ptr - txn->uri;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10913 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10914 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10915 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10916
10917 return 1;
10918
10919}
10920
10921/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
10922static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10923smp_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]10924{
10925 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10926 struct http_txn *txn = smp->strm->txn;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10927 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10928
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10929 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10930 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10931
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10932 ptr = txn->uri;
10933
10934 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10935 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10936
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10937 if (!*ptr)
10938 return 0;
10939
10940 ptr++; /* skip the space */
10941
10942 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10943 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10944 if (!ptr)
10945 return 0;
10946 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
10947 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10948
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10949 smp->data.u.str = *temp;
10950 smp->data.u.str.len = ptr - temp->str;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10951 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10952 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10953
10954 return 1;
10955}
10956
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10957/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
10958 * as a string (either "HTTP/1.0" or "HTTP/1.1").
10959 */
10960static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10961smp_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]10962{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10963 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10964
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10965 if (!txn || txn->req.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10966 return 0;
10967
10968 if (txn->req.flags & HTTP_MSGF_VER_11)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10969 smp->data.u.str.str = "HTTP/1.1";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10970 else
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10971 smp->data.u.str.str = "HTTP/1.0";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10972
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10973 smp->data.u.str.len = 8;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10974 smp->data.type = SMP_T_STR;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10975 smp->flags = SMP_F_CONST;
10976 return 1;
10977
10978}
10979
10980/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
10981 * as a string (either "HTTP/1.0" or "HTTP/1.1").
10982 */
10983static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10984smp_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]10985{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10986 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10987
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10988 if (!txn || txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10989 return 0;
10990
10991 if (txn->rsp.flags & HTTP_MSGF_VER_11)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10992 smp->data.u.str.str = "HTTP/1.1";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10993 else
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10994 smp->data.u.str.str = "HTTP/1.0";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10995
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10996 smp->data.u.str.len = 8;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10997 smp->data.type = SMP_T_STR;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10998 smp->flags = SMP_F_CONST;
10999 return 1;
11000
11001}
11002
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11003
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11004/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11005 * 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]11006 * 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]11007 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11008 * 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]11009 * Accepts exactly 1 argument of type string. If the input options indicate
11010 * that no iterating is desired, then only last value is fetched if any.
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]11011 * The returned sample is of type CSTR. Can be used to parse cookies in other
11012 * files.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11013 */
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11014int 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]11015{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11016 struct http_txn *txn;
11017 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11018 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11019 const struct http_msg *msg;
11020 const char *hdr_name;
11021 int hdr_name_len;
11022 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11023 int occ = 0;
11024 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11025
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11026 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11027 return 0;
11028
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11029 if (!ctx) {
11030 /* first call */
11031 ctx = &static_hdr_ctx;
11032 ctx->idx = 0;
11033 smp->ctx.a[2] = ctx;
11034 }
11035
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11036 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11037
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11038 txn = smp->strm->txn;
11039 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11040
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11041 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11042 msg = &txn->req;
11043 hdr_name = "Cookie";
11044 hdr_name_len = 6;
11045 } else {
11046 msg = &txn->rsp;
11047 hdr_name = "Set-Cookie";
11048 hdr_name_len = 10;
11049 }
11050
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11051 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11052 /* no explicit occurrence and single fetch => last cookie by default */
11053 occ = -1;
11054
11055 /* OK so basically here, either we want only one value and it's the
11056 * last one, or we want to iterate over all of them and we fetch the
11057 * next one.
11058 */
11059
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11060 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11061 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11062 /* search for the header from the beginning, we must first initialize
11063 * the search parameters.
11064 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11065 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11066 ctx->idx = 0;
11067 }
11068
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11069 smp->flags |= SMP_F_VOL_HDR;
11070
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11071 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11072 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
11073 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11074 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
11075 goto out;
11076
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11077 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11078 continue;
11079
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11080 smp->ctx.a[0] = ctx->line + ctx->val;
11081 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11082 }
11083
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11084 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11085 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11086 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]11087 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11088 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11089 &smp->data.u.str.str,
11090 &smp->data.u.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11091 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11092 found = 1;
11093 if (occ >= 0) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11094 /* one value was returned into smp->data.u.str.{str,len} */
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11095 smp->flags |= SMP_F_NOT_LAST;
11096 return 1;
11097 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11098 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11099 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11100 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11101 /* all cookie headers and values were scanned. If we're looking for the
11102 * last occurrence, we may return it now.
11103 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11104 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11105 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11106 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11107}
11108
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11109/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11110 * 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]11111 * multiple cookies may be parsed on the same line. The returned sample is of
11112 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11113 */
11114static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11115smp_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]11116{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11117 struct http_txn *txn;
11118 struct hdr_idx *idx;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11119 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11120 const struct http_msg *msg;
11121 const char *hdr_name;
11122 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11123 int cnt;
11124 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11125 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11126
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11127 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11128 return 0;
11129
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11130 CHECK_HTTP_MESSAGE_FIRST();
11131
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11132 txn = smp->strm->txn;
11133 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11134
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11135 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11136 msg = &txn->req;
11137 hdr_name = "Cookie";
11138 hdr_name_len = 6;
11139 } else {
11140 msg = &txn->rsp;
11141 hdr_name = "Set-Cookie";
11142 hdr_name_len = 10;
11143 }
11144
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11145 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]11146 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11147 ctx.idx = 0;
11148 cnt = 0;
11149
11150 while (1) {
11151 /* Note: val_beg == NULL every time we need to fetch a new header */
11152 if (!val_beg) {
11153 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
11154 break;
11155
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11156 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11157 continue;
11158
11159 val_beg = ctx.line + ctx.val;
11160 val_end = val_beg + ctx.vlen;
11161 }
11162
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11163 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11164 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11165 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11166 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11167 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11168 &smp->data.u.str.str,
11169 &smp->data.u.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11170 cnt++;
11171 }
11172 }
11173
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11174 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11175 smp->data.u.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11176 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11177 return 1;
11178}
11179
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11180/* Fetch an cookie's integer value. The integer value is returned. It
11181 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
11182 */
11183static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11184smp_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]11185{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11186 int ret = smp_fetch_cookie(args, smp, kw, private);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11187
11188 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11189 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11190 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]11191 }
11192
11193 return ret;
11194}
11195
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11196/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]11197/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11198/************************************************************************/
11199
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11200/*
11201 * Given a path string and its length, find the position of beginning of the
11202 * query string. Returns NULL if no query string is found in the path.
11203 *
11204 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
11205 *
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11206 * find_query_string(path, n, '?') points to "yo=mama;ye=daddy" string.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11207 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11208static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11209{
11210 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]11211
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11212 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11213 return p ? p + 1 : NULL;
11214}
11215
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11216static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11217{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11218 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11219}
11220
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11221/* after increasing a pointer value, it can exceed the first buffer
11222 * size. This function transform the value of <ptr> according with
11223 * the expected position. <chunks> is an array of the one or two
11224 * avalaible chunks. The first value is the start of the first chunk,
11225 * the second value if the end+1 of the first chunks. The third value
11226 * is NULL or the start of the second chunk and the fourth value is
11227 * the end+1 of the second chunk. The function returns 1 if does a
11228 * wrap, else returns 0.
11229 */
11230static inline int fix_pointer_if_wrap(const char **chunks, const char **ptr)
11231{
11232 if (*ptr < chunks[1])
11233 return 0;
11234 if (!chunks[2])
11235 return 0;
11236 *ptr = chunks[2] + ( *ptr - chunks[1] );
11237 return 1;
11238}
11239
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11240/*
11241 * Given a url parameter, find the starting position of the first occurence,
11242 * or NULL if the parameter is not found.
11243 *
11244 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
11245 * the function will return query_string+8.
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11246 *
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11247 * Warning: this function returns a pointer that can point to the first chunk
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11248 * or the second chunk. The caller must be check the position before using the
11249 * result.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11250 */
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11251static const char *
11252find_url_param_pos(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11253 const char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11254 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11255{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11256 const char *pos, *last, *equal;
11257 const char **bufs = chunks;
11258 int l1, l2;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11259
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11260
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11261 pos = bufs[0];
11262 last = bufs[1];
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11263 while (pos < last) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11264 /* Check the equal. */
11265 equal = pos + url_param_name_l;
11266 if (fix_pointer_if_wrap(chunks, &equal)) {
11267 if (equal >= chunks[3])
11268 return NULL;
11269 } else {
11270 if (equal >= chunks[1])
11271 return NULL;
11272 }
11273 if (*equal == '=') {
11274 if (pos + url_param_name_l > last) {
11275 /* process wrap case, we detect a wrap. In this case, the
11276 * comparison is performed in two parts.
11277 */
11278
11279 /* This is the end, we dont have any other chunk. */
11280 if (bufs != chunks || !bufs[2])
11281 return NULL;
11282
11283 /* Compute the length of each part of the comparison. */
11284 l1 = last - pos;
11285 l2 = url_param_name_l - l1;
11286
11287 /* The second buffer is too short to contain the compared string. */
11288 if (bufs[2] + l2 > bufs[3])
11289 return NULL;
11290
11291 if (memcmp(pos, url_param_name, l1) == 0 &&
11292 memcmp(bufs[2], url_param_name+l1, l2) == 0)
11293 return pos;
11294
11295 /* Perform wrapping and jump the string who fail the comparison. */
11296 bufs += 2;
11297 pos = bufs[0] + l2;
11298 last = bufs[1];
11299
11300 } else {
11301 /* process a simple comparison. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11302 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
11303 return pos;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11304 pos += url_param_name_l + 1;
11305 if (fix_pointer_if_wrap(chunks, &pos))
11306 last = bufs[2];
11307 }
11308 }
11309
11310 while (1) {
11311 /* Look for the next delimiter. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11312 while (pos < last && !is_param_delimiter(*pos, delim))
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11313 pos++;
11314 if (pos < last)
11315 break;
11316 /* process buffer wrapping. */
11317 if (bufs != chunks || !bufs[2])
11318 return NULL;
11319 bufs += 2;
11320 pos = bufs[0];
11321 last = bufs[1];
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11322 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11323 pos++;
11324 }
11325 return NULL;
11326}
11327
11328/*
Cyril Bontéce1ef4d2015-11-26 21:39:56 +0100[diff] [blame]11329 * Given a url parameter name and a query string, find the next value.
11330 * An empty url_param_name matches the first available parameter.
11331 * If the parameter is found, 1 is returned and *vstart / *vend are updated to
11332 * respectively provide a pointer to the value and its end.
11333 * Otherwise, 0 is returned and vstart/vend are not modified.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11334 */
11335static int
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11336find_next_url_param(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11337 const char* url_param_name, size_t url_param_name_l,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11338 const char **vstart, const char **vend, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11339{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11340 const char *arg_start, *qs_end;
11341 const char *value_start, *value_end;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11342
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11343 arg_start = chunks[0];
11344 qs_end = chunks[1];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11345 if (url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11346 /* Looks for an argument name. */
11347 arg_start = find_url_param_pos(chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11348 url_param_name, url_param_name_l,
11349 delim);
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11350 /* Check for wrapping. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11351 if (arg_start >= qs_end)
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11352 qs_end = chunks[3];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11353 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11354 if (!arg_start)
11355 return 0;
11356
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11357 if (!url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11358 while (1) {
11359 /* looks for the first argument. */
11360 value_start = memchr(arg_start, '=', qs_end - arg_start);
11361 if (!value_start) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11362 /* Check for wrapping. */
11363 if (arg_start >= chunks[0] &&
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11364 arg_start < chunks[1] &&
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11365 chunks[2]) {
11366 arg_start = chunks[2];
11367 qs_end = chunks[3];
11368 continue;
11369 }
11370 return 0;
11371 }
11372 break;
11373 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11374 value_start++;
11375 }
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11376 else {
11377 /* Jump the argument length. */
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11378 value_start = arg_start + url_param_name_l + 1;
11379
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11380 /* Check for pointer wrapping. */
11381 if (fix_pointer_if_wrap(chunks, &value_start)) {
11382 /* Update the end pointer. */
11383 qs_end = chunks[3];
11384
11385 /* Check for overflow. */
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11386 if (value_start >= qs_end)
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11387 return 0;
11388 }
11389 }
11390
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11391 value_end = value_start;
11392
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11393 while (1) {
11394 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
11395 value_end++;
11396 if (value_end < qs_end)
11397 break;
11398 /* process buffer wrapping. */
11399 if (value_end >= chunks[0] &&
Willy Tarreauf6625822015-12-27 14:51:01 +0100[diff] [blame]11400 value_end < chunks[1] &&
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11401 chunks[2]) {
11402 value_end = chunks[2];
11403 qs_end = chunks[3];
11404 continue;
11405 }
11406 break;
11407 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11408
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11409 *vstart = value_start;
11410 *vend = value_end;
Cyril Bontéce1ef4d2015-11-26 21:39:56 +0100[diff] [blame]11411 return 1;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11412}
11413
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11414/* This scans a URL-encoded query string. It takes an optionally wrapping
11415 * string whose first contigous chunk has its beginning in ctx->a[0] and end
11416 * in ctx->a[1], and the optional second part in (ctx->a[2]..ctx->a[3]). The
11417 * pointers are updated for next iteration before leaving.
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11418 */
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11419static int
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11420smp_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]11421{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11422 const char *vstart, *vend;
11423 struct chunk *temp;
11424 const char **chunks = (const char **)smp->ctx.a;
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11425
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11426 if (!find_next_url_param(chunks,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11427 name, name_len,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11428 &vstart, &vend,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11429 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11430 return 0;
11431
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11432 /* Create sample. If the value is contiguous, return the pointer as CONST,
11433 * if the value is wrapped, copy-it in a buffer.
11434 */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11435 smp->data.type = SMP_T_STR;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11436 if (chunks[2] &&
11437 vstart >= chunks[0] && vstart <= chunks[1] &&
11438 vend >= chunks[2] && vend <= chunks[3]) {
11439 /* Wrapped case. */
11440 temp = get_trash_chunk();
11441 memcpy(temp->str, vstart, chunks[1] - vstart);
11442 memcpy(temp->str + ( chunks[1] - vstart ), chunks[2], vend - chunks[2]);
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11443 smp->data.u.str.str = temp->str;
11444 smp->data.u.str.len = ( chunks[1] - vstart ) + ( vend - chunks[2] );
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11445 } else {
11446 /* Contiguous case. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11447 smp->data.u.str.str = (char *)vstart;
11448 smp->data.u.str.len = vend - vstart;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11449 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
11450 }
11451
11452 /* Update context, check wrapping. */
11453 chunks[0] = vend;
11454 if (chunks[2] && vend >= chunks[2] && vend <= chunks[3]) {
11455 chunks[1] = chunks[3];
11456 chunks[2] = NULL;
11457 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11458
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11459 if (chunks[0] < chunks[1])
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11460 smp->flags |= SMP_F_NOT_LAST;
11461
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11462 return 1;
11463}
11464
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11465/* This function iterates over each parameter of the query string. It uses
11466 * 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]11467 * parameter. Since it uses smp_fetch_param(), ctx->a[2..3] are both NULL.
11468 * An optional parameter name is passed in args[0], otherwise any parameter is
11469 * considered. It supports an optional delimiter argument for the beginning of
11470 * the string in args[1], which defaults to "?".
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11471 */
11472static int
11473smp_fetch_url_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11474{
11475 struct http_msg *msg;
11476 char delim = '?';
11477 const char *name;
11478 int name_len;
11479
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11480 if (!args ||
11481 (args[0].type && args[0].type != ARGT_STR) ||
11482 (args[1].type && args[1].type != ARGT_STR))
11483 return 0;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11484
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11485 name = "";
11486 name_len = 0;
11487 if (args->type == ARGT_STR) {
11488 name = args->data.str.str;
11489 name_len = args->data.str.len;
11490 }
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11491
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11492 if (args[1].type)
11493 delim = *args[1].data.str.str;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11494
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11495 if (!smp->ctx.a[0]) { // first call, find the query string
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11496 CHECK_HTTP_MESSAGE_FIRST();
11497
11498 msg = &smp->strm->txn->req;
11499
11500 smp->ctx.a[0] = find_param_list(msg->chn->buf->p + msg->sl.rq.u,
11501 msg->sl.rq.u_l, delim);
11502 if (!smp->ctx.a[0])
11503 return 0;
11504
11505 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]11506
11507 /* Assume that the context is filled with NULL pointer
11508 * before the first call.
11509 * smp->ctx.a[2] = NULL;
11510 * smp->ctx.a[3] = NULL;
11511 */
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11512 }
11513
11514 return smp_fetch_param(delim, name, name_len, args, smp, kw, private);
11515}
11516
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11517/* This function iterates over each parameter of the body. This requires
11518 * that the body has been waited for using http-buffer-request. It uses
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11519 * ctx->a[0] and ctx->a[1] to store the beginning and end of the first
11520 * contigous part of the body, and optionally ctx->a[2..3] to reference the
11521 * optional second part if the body wraps at the end of the buffer. An optional
11522 * parameter name is passed in args[0], otherwise any parameter is considered.
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11523 */
11524static int
11525smp_fetch_body_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11526{
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11527 struct http_msg *msg;
11528 unsigned long len;
11529 unsigned long block1;
11530 char *body;
11531 const char *name;
11532 int name_len;
11533
11534 if (!args || (args[0].type && args[0].type != ARGT_STR))
11535 return 0;
11536
11537 name = "";
11538 name_len = 0;
11539 if (args[0].type == ARGT_STR) {
11540 name = args[0].data.str.str;
11541 name_len = args[0].data.str.len;
11542 }
11543
11544 if (!smp->ctx.a[0]) { // first call, find the query string
11545 CHECK_HTTP_MESSAGE_FIRST();
11546
11547 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]11548 msg = &smp->strm->txn->req;
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11549 else
Willy Tarreaube508f12016-03-10 11:47:01 +0100[diff] [blame]11550 msg = &smp->strm->txn->rsp;
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11551
11552 len = http_body_bytes(msg);
11553 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
11554
11555 block1 = len;
11556 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
11557 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
11558
11559 if (block1 == len) {
11560 /* buffer is not wrapped (or empty) */
11561 smp->ctx.a[0] = body;
11562 smp->ctx.a[1] = body + len;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11563
11564 /* Assume that the context is filled with NULL pointer
11565 * before the first call.
11566 * smp->ctx.a[2] = NULL;
11567 * smp->ctx.a[3] = NULL;
11568 */
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11569 }
11570 else {
11571 /* buffer is wrapped, we need to defragment it */
11572 smp->ctx.a[0] = body;
11573 smp->ctx.a[1] = body + block1;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11574 smp->ctx.a[2] = msg->chn->buf->data;
11575 smp->ctx.a[3] = msg->chn->buf->data + ( len - block1 );
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11576 }
11577 }
11578 return smp_fetch_param('&', name, name_len, args, smp, kw, private);
11579}
11580
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11581/* Return the signed integer value for the specified url parameter (see url_param
11582 * above).
11583 */
11584static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11585smp_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]11586{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11587 int ret = smp_fetch_url_param(args, smp, kw, private);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11588
11589 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11590 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11591 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]11592 }
11593
11594 return ret;
11595}
11596
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11597/* This produces a 32-bit hash of the concatenation of the first occurrence of
11598 * the Host header followed by the path component if it begins with a slash ('/').
11599 * This means that '*' will not be added, resulting in exactly the first Host
11600 * entry. If no Host header is found, then the path is used. The resulting value
11601 * is hashed using the url hash followed by a full avalanche hash and provides a
11602 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
11603 * high-traffic sites without having to store whole paths.
11604 * this differs from the base32 functions in that it includes the url parameters
11605 * as well as the path
11606 */
11607static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11608smp_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]11609{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11610 struct http_txn *txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11611 struct hdr_ctx ctx;
11612 unsigned int hash = 0;
11613 char *ptr, *beg, *end;
11614 int len;
11615
11616 CHECK_HTTP_MESSAGE_FIRST();
11617
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11618 txn = smp->strm->txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11619 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11620 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]11621 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
11622 ptr = ctx.line + ctx.val;
11623 len = ctx.vlen;
11624 while (len--)
11625 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
11626 }
11627
11628 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11629 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]11630 beg = http_get_path(txn);
11631 if (!beg)
11632 beg = end;
11633
11634 for (ptr = beg; ptr < end ; ptr++);
11635
11636 if (beg < ptr && *beg == '/') {
11637 while (beg < ptr)
11638 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
11639 }
11640 hash = full_hash(hash);
11641
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11642 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11643 smp->data.u.sint = hash;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11644 smp->flags = SMP_F_VOL_1ST;
11645 return 1;
11646}
11647
11648/* This concatenates the source address with the 32-bit hash of the Host and
11649 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
11650 * per-url counters. The result is a binary block from 8 to 20 bytes depending
11651 * on the source address length. The URL hash is stored before the address so
11652 * that in environments where IPv6 is insignificant, truncating the output to
11653 * 8 bytes would still work.
11654 */
11655static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11656smp_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]11657{
11658 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11659 struct connection *cli_conn = objt_conn(smp->sess->origin);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11660
Dragan Dosendb5af612016-06-16 11:23:01 +0200[diff] [blame]11661 if (!cli_conn)
11662 return 0;
11663
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11664 if (!smp_fetch_url32(args, smp, kw, private))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11665 return 0;
11666
11667 temp = get_trash_chunk();
Dragan Dosene5f41332016-06-16 11:08:08 +0200[diff] [blame]11668 *(unsigned int *)temp->str = htonl(smp->data.u.sint);
11669 temp->len += sizeof(unsigned int);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11670
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11671 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11672 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11673 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]11674 temp->len += 4;
11675 break;
11676 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11677 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]11678 temp->len += 16;
11679 break;
11680 default:
11681 return 0;
11682 }
11683
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11684 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11685 smp->data.type = SMP_T_BIN;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11686 return 1;
11687}
11688
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11689/* This function is used to validate the arguments passed to any "hdr" fetch
11690 * keyword. These keywords support an optional positive or negative occurrence
11691 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
11692 * is assumed that the types are already the correct ones. Returns 0 on error,
11693 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
11694 * error message in case of error, that the caller is responsible for freeing.
11695 * The initial location must either be freeable or NULL.
11696 */
Thierry FOURNIER49f45af2014-12-08 19:50:43 +0100[diff] [blame]11697int val_hdr(struct arg *arg, char **err_msg)
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11698{
11699 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]11700 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11701 return 0;
11702 }
11703 return 1;
11704}
11705
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11706/* takes an UINT value on input supposed to represent the time since EPOCH,
11707 * adds an optional offset found in args[0] and emits a string representing
11708 * the date in RFC-1123/5322 format.
11709 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11710static int sample_conv_http_date(const struct arg *args, struct sample *smp, void *private)
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11711{
Cyril Bontéf78d8962016-01-22 19:40:28 +0100[diff] [blame]11712 const char day[7][4] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11713 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
11714 struct chunk *temp;
11715 struct tm *tm;
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11716 /* 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]11717 time_t curr_date = smp->data.u.sint & 0x007fffffffffffffLL;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11718
11719 /* add offset */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11720 if (args && (args[0].type == ARGT_SINT))
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11721 curr_date += args[0].data.sint;
11722
11723 tm = gmtime(&curr_date);
Thierry FOURNIERfac9ccf2015-07-08 00:15:20 +0200[diff] [blame]11724 if (!tm)
11725 return 0;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11726
11727 temp = get_trash_chunk();
11728 temp->len = snprintf(temp->str, temp->size - temp->len,
11729 "%s, %02d %s %04d %02d:%02d:%02d GMT",
11730 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
11731 tm->tm_hour, tm->tm_min, tm->tm_sec);
11732
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11733 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11734 smp->data.type = SMP_T_STR;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11735 return 1;
11736}
11737
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11738/* Match language range with language tag. RFC2616 14.4:
11739 *
11740 * A language-range matches a language-tag if it exactly equals
11741 * the tag, or if it exactly equals a prefix of the tag such
11742 * that the first tag character following the prefix is "-".
11743 *
11744 * Return 1 if the strings match, else return 0.
11745 */
11746static inline int language_range_match(const char *range, int range_len,
11747 const char *tag, int tag_len)
11748{
11749 const char *end = range + range_len;
11750 const char *tend = tag + tag_len;
11751 while (range < end) {
11752 if (*range == '-' && tag == tend)
11753 return 1;
11754 if (*range != *tag || tag == tend)
11755 return 0;
11756 range++;
11757 tag++;
11758 }
11759 /* Return true only if the last char of the tag is matched. */
11760 return tag == tend;
11761}
11762
11763/* Arguments: The list of expected value, the number of parts returned and the separator */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11764static int sample_conv_q_prefered(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11765{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11766 const char *al = smp->data.u.str.str;
11767 const char *end = al + smp->data.u.str.len;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11768 const char *token;
11769 int toklen;
11770 int qvalue;
11771 const char *str;
11772 const char *w;
11773 int best_q = 0;
11774
11775 /* Set the constant to the sample, because the output of the
11776 * function will be peek in the constant configuration string.
11777 */
11778 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11779 smp->data.u.str.size = 0;
11780 smp->data.u.str.str = "";
11781 smp->data.u.str.len = 0;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11782
11783 /* Parse the accept language */
11784 while (1) {
11785
11786 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11787 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11788 al++;
11789 if (al >= end)
11790 break;
11791
11792 /* Start of the fisrt word. */
11793 token = al;
11794
11795 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11796 while (al < end && *al != ';' && *al != ',' && !isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11797 al++;
11798 if (al == token)
11799 goto expect_comma;
11800
11801 /* Length of the token. */
11802 toklen = al - token;
11803 qvalue = 1000;
11804
11805 /* Check if the token exists in the list. If the token not exists,
11806 * jump to the next token.
11807 */
11808 str = args[0].data.str.str;
11809 w = str;
11810 while (1) {
11811 if (*str == ';' || *str == '\0') {
11812 if (language_range_match(token, toklen, w, str-w))
11813 goto look_for_q;
11814 if (*str == '\0')
11815 goto expect_comma;
11816 w = str + 1;
11817 }
11818 str++;
11819 }
11820 goto expect_comma;
11821
11822look_for_q:
11823
11824 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11825 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11826 al++;
11827 if (al >= end)
11828 goto process_value;
11829
11830 /* If ',' is found, process the result */
11831 if (*al == ',')
11832 goto process_value;
11833
11834 /* If the character is different from ';', look
11835 * for the end of the header part in best effort.
11836 */
11837 if (*al != ';')
11838 goto expect_comma;
11839
11840 /* Assumes that the char is ';', now expect "q=". */
11841 al++;
11842
11843 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11844 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11845 al++;
11846 if (al >= end)
11847 goto process_value;
11848
11849 /* Expect 'q'. If no 'q', continue in best effort */
11850 if (*al != 'q')
11851 goto process_value;
11852 al++;
11853
11854 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11855 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11856 al++;
11857 if (al >= end)
11858 goto process_value;
11859
11860 /* Expect '='. If no '=', continue in best effort */
11861 if (*al != '=')
11862 goto process_value;
11863 al++;
11864
11865 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11866 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11867 al++;
11868 if (al >= end)
11869 goto process_value;
11870
11871 /* Parse the q value. */
11872 qvalue = parse_qvalue(al, &al);
11873
11874process_value:
11875
11876 /* If the new q value is the best q value, then store the associated
11877 * language in the response. If qvalue is the biggest value (1000),
11878 * break the process.
11879 */
11880 if (qvalue > best_q) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11881 smp->data.u.str.str = (char *)w;
11882 smp->data.u.str.len = str - w;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11883 if (qvalue >= 1000)
11884 break;
11885 best_q = qvalue;
11886 }
11887
11888expect_comma:
11889
11890 /* Expect comma or end. If the end is detected, quit the loop. */
11891 while (al < end && *al != ',')
11892 al++;
11893 if (al >= end)
11894 break;
11895
11896 /* Comma is found, jump it and restart the analyzer. */
11897 al++;
11898 }
11899
11900 /* Set default value if required. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11901 if (smp->data.u.str.len == 0 && args[1].type == ARGT_STR) {
11902 smp->data.u.str.str = args[1].data.str.str;
11903 smp->data.u.str.len = args[1].data.str.len;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11904 }
11905
11906 /* Return true only if a matching language was found. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11907 return smp->data.u.str.len != 0;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11908}
11909
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]11910/* This fetch url-decode any input string. */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11911static int sample_conv_url_dec(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]11912{
11913 /* If the constant flag is set or if not size is avalaible at
11914 * the end of the buffer, copy the string in other buffer
11915 * before decoding.
11916 */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11917 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]11918 struct chunk *str = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11919 memcpy(str->str, smp->data.u.str.str, smp->data.u.str.len);
11920 smp->data.u.str.str = str->str;
11921 smp->data.u.str.size = str->size;
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]11922 smp->flags &= ~SMP_F_CONST;
11923 }
11924
11925 /* Add final \0 required by url_decode(), and convert the input string. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11926 smp->data.u.str.str[smp->data.u.str.len] = '\0';
11927 smp->data.u.str.len = url_decode(smp->data.u.str.str);
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]11928 return 1;
11929}
11930
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11931static int smp_conv_req_capture(const struct arg *args, struct sample *smp, void *private)
11932{
11933 struct proxy *fe = strm_fe(smp->strm);
11934 int idx, i;
11935 struct cap_hdr *hdr;
11936 int len;
11937
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11938 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11939 return 0;
11940
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11941 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11942
11943 /* Check the availibity of the capture id. */
11944 if (idx > fe->nb_req_cap - 1)
11945 return 0;
11946
11947 /* Look for the original configuration. */
11948 for (hdr = fe->req_cap, i = fe->nb_req_cap - 1;
11949 hdr != NULL && i != idx ;
11950 i--, hdr = hdr->next);
11951 if (!hdr)
11952 return 0;
11953
11954 /* check for the memory allocation */
11955 if (smp->strm->req_cap[hdr->index] == NULL)
11956 smp->strm->req_cap[hdr->index] = pool_alloc2(hdr->pool);
11957 if (smp->strm->req_cap[hdr->index] == NULL)
11958 return 0;
11959
11960 /* Check length. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11961 len = smp->data.u.str.len;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11962 if (len > hdr->len)
11963 len = hdr->len;
11964
11965 /* Capture input data. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11966 memcpy(smp->strm->req_cap[idx], smp->data.u.str.str, len);
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11967 smp->strm->req_cap[idx][len] = '\0';
11968
11969 return 1;
11970}
11971
11972static int smp_conv_res_capture(const struct arg *args, struct sample *smp, void *private)
11973{
11974 struct proxy *fe = strm_fe(smp->strm);
11975 int idx, i;
11976 struct cap_hdr *hdr;
11977 int len;
11978
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11979 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11980 return 0;
11981
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11982 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]11983
11984 /* Check the availibity of the capture id. */
11985 if (idx > fe->nb_rsp_cap - 1)
11986 return 0;
11987
11988 /* Look for the original configuration. */
11989 for (hdr = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
11990 hdr != NULL && i != idx ;
11991 i--, hdr = hdr->next);
11992 if (!hdr)
11993 return 0;
11994
11995 /* check for the memory allocation */
11996 if (smp->strm->res_cap[hdr->index] == NULL)
11997 smp->strm->res_cap[hdr->index] = pool_alloc2(hdr->pool);
11998 if (smp->strm->res_cap[hdr->index] == NULL)
11999 return 0;
12000
12001 /* Check length. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12002 len = smp->data.u.str.len;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12003 if (len > hdr->len)
12004 len = hdr->len;
12005
12006 /* Capture input data. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12007 memcpy(smp->strm->res_cap[idx], smp->data.u.str.str, len);
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12008 smp->strm->res_cap[idx][len] = '\0';
12009
12010 return 1;
12011}
12012
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12013/* This function executes one of the set-{method,path,query,uri} actions. It
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12014 * takes the string from the variable 'replace' with length 'len', then modifies
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12015 * the relevant part of the request line accordingly. Then it updates various
12016 * pointers to the next elements which were moved, and the total buffer length.
12017 * It finds the action to be performed in p[2], previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12018 * parse_set_req_line(). It returns 0 in case of success, -1 in case of internal
12019 * error, though this can be revisited when this code is finally exploited.
12020 *
12021 * 'action' can be '0' to replace method, '1' to replace path, '2' to replace
12022 * query string and 3 to replace uri.
12023 *
12024 * In query string case, the mark question '?' must be set at the start of the
12025 * string by the caller, event if the replacement query string is empty.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12026 */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12027int http_replace_req_line(int action, const char *replace, int len,
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12028 struct proxy *px, struct stream *s)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12029{
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12030 struct http_txn *txn = s->txn;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12031 char *cur_ptr, *cur_end;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12032 int offset = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12033 int delta;
12034
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12035 switch (action) {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12036 case 0: // method
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12037 cur_ptr = s->req.buf->p;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12038 cur_end = cur_ptr + txn->req.sl.rq.m_l;
12039
12040 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12041 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12042 txn->req.sl.rq.m_l += delta;
12043 txn->req.sl.rq.u += delta;
12044 txn->req.sl.rq.v += delta;
12045 break;
12046
12047 case 1: // path
12048 cur_ptr = http_get_path(txn);
12049 if (!cur_ptr)
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12050 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12051
12052 cur_end = cur_ptr;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12053 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]12054 cur_end++;
12055
12056 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12057 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12058 txn->req.sl.rq.u_l += delta;
12059 txn->req.sl.rq.v += delta;
12060 break;
12061
12062 case 2: // query
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12063 offset = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12064 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12065 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12066 while (cur_ptr < cur_end && *cur_ptr != '?')
12067 cur_ptr++;
12068
12069 /* skip the question mark or indicate that we must insert it
12070 * (but only if the format string is not empty then).
12071 */
12072 if (cur_ptr < cur_end)
12073 cur_ptr++;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12074 else if (len > 1)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12075 offset = 0;
12076
12077 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12078 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12079 txn->req.sl.rq.u_l += delta;
12080 txn->req.sl.rq.v += delta;
12081 break;
12082
12083 case 3: // uri
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12084 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12085 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12086
12087 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12088 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12089 txn->req.sl.rq.u_l += delta;
12090 txn->req.sl.rq.v += delta;
12091 break;
12092
12093 default:
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12094 return -1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12095 }
12096
12097 /* commit changes and adjust end of message */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12098 delta = buffer_replace2(s->req.buf, cur_ptr, cur_end, replace + offset, len - offset);
Thierry FOURNIER7f6192c2015-04-26 18:01:40 +0200[diff] [blame]12099 txn->req.sl.rq.l += delta;
12100 txn->hdr_idx.v[0].len += delta;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12101 http_msg_move_end(&txn->req, delta);
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12102 return 0;
12103}
12104
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12105/* This function replace the HTTP status code and the associated message. The
12106 * variable <status> contains the new status code. This function never fails.
12107 */
12108void http_set_status(unsigned int status, struct stream *s)
12109{
12110 struct http_txn *txn = s->txn;
12111 char *cur_ptr, *cur_end;
12112 int delta;
12113 char *res;
12114 int c_l;
12115 const char *msg;
12116 int msg_len;
12117
12118 chunk_reset(&trash);
12119
12120 res = ultoa_o(status, trash.str, trash.size);
12121 c_l = res - trash.str;
12122
12123 trash.str[c_l] = ' ';
12124 trash.len = c_l + 1;
12125
12126 msg = get_reason(status);
12127 msg_len = strlen(msg);
12128
12129 strncpy(&trash.str[trash.len], msg, trash.size - trash.len);
12130 trash.len += msg_len;
12131
12132 cur_ptr = s->res.buf->p + txn->rsp.sl.st.c;
12133 cur_end = s->res.buf->p + txn->rsp.sl.st.r + txn->rsp.sl.st.r_l;
12134
12135 /* commit changes and adjust message */
12136 delta = buffer_replace2(s->res.buf, cur_ptr, cur_end, trash.str, trash.len);
12137
12138 /* adjust res line offsets and lengths */
12139 txn->rsp.sl.st.r += c_l - txn->rsp.sl.st.c_l;
12140 txn->rsp.sl.st.c_l = c_l;
12141 txn->rsp.sl.st.r_l = msg_len;
12142
12143 delta = trash.len - (cur_end - cur_ptr);
12144 txn->rsp.sl.st.l += delta;
12145 txn->hdr_idx.v[0].len += delta;
12146 http_msg_move_end(&txn->rsp, delta);
12147}
12148
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12149/* This function executes one of the set-{method,path,query,uri} actions. It
12150 * builds a string in the trash from the specified format string. It finds
Thierry FOURNIER3f4bc652015-08-26 16:23:34 +0200[diff] [blame]12151 * the action to be performed in <http.action>, previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12152 * parse_set_req_line(). The replacement action is excuted by the function
Thierry FOURNIER3f4bc652015-08-26 16:23:34 +0200[diff] [blame]12153 * http_action_set_req_line(). It always returns ACT_RET_CONT. If an error
12154 * occurs the action is canceled, but the rule processing continue.
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12155 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12156enum act_return http_action_set_req_line(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12157 struct session *sess, struct stream *s, int flags)
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12158{
12159 chunk_reset(&trash);
12160
12161 /* If we have to create a query string, prepare a '?'. */
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12162 if (rule->arg.http.action == 2)
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12163 trash.str[trash.len++] = '?';
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12164 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]12165
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12166 http_replace_req_line(rule->arg.http.action, trash.str, trash.len, px, s);
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12167 return ACT_RET_CONT;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12168}
12169
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12170/* This function is just a compliant action wrapper for "set-status". */
12171enum act_return action_http_set_status(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12172 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12173{
12174 http_set_status(rule->arg.status.code, s);
12175 return ACT_RET_CONT;
12176}
12177
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12178/* parse an http-request action among :
12179 * set-method
12180 * set-path
12181 * set-query
12182 * set-uri
12183 *
12184 * All of them accept a single argument of type string representing a log-format.
12185 * The resulting rule makes use of arg->act.p[0..1] to store the log-format list
12186 * 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]12187 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12188 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12189enum act_parse_ret parse_set_req_line(const char **args, int *orig_arg, struct proxy *px,
12190 struct act_rule *rule, char **err)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12191{
12192 int cur_arg = *orig_arg;
12193
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12194 rule->action = ACT_CUSTOM;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12195
12196 switch (args[0][4]) {
12197 case 'm' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12198 rule->arg.http.action = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12199 rule->action_ptr = http_action_set_req_line;
12200 break;
12201 case 'p' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12202 rule->arg.http.action = 1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12203 rule->action_ptr = http_action_set_req_line;
12204 break;
12205 case 'q' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12206 rule->arg.http.action = 2;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12207 rule->action_ptr = http_action_set_req_line;
12208 break;
12209 case 'u' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12210 rule->arg.http.action = 3;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12211 rule->action_ptr = http_action_set_req_line;
12212 break;
12213 default:
12214 memprintf(err, "internal error: unhandled action '%s'", args[0]);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12215 return ACT_RET_PRS_ERR;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12216 }
12217
12218 if (!*args[cur_arg] ||
12219 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
12220 memprintf(err, "expects exactly 1 argument <format>");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12221 return ACT_RET_PRS_ERR;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12222 }
12223
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12224 LIST_INIT(&rule->arg.http.logfmt);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12225 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12226 parse_logformat_string(args[cur_arg], proxy, &rule->arg.http.logfmt, LOG_OPT_HTTP,
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12227 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
12228 proxy->conf.args.file, proxy->conf.args.line);
12229
12230 (*orig_arg)++;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12231 return ACT_RET_PRS_OK;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12232}
12233
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12234/* parse set-status action:
12235 * This action accepts a single argument of type int representing
12236 * an http status code. It returns ACT_RET_PRS_OK on success,
12237 * ACT_RET_PRS_ERR on error.
12238 */
12239enum act_parse_ret parse_http_set_status(const char **args, int *orig_arg, struct proxy *px,
12240 struct act_rule *rule, char **err)
12241{
12242 char *error;
12243
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12244 rule->action = ACT_CUSTOM;
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12245 rule->action_ptr = action_http_set_status;
12246
12247 /* Check if an argument is available */
12248 if (!*args[*orig_arg]) {
12249 memprintf(err, "expects exactly 1 argument <status>");
12250 return ACT_RET_PRS_ERR;
12251 }
12252
12253 /* convert status code as integer */
12254 rule->arg.status.code = strtol(args[*orig_arg], &error, 10);
12255 if (*error != '\0' || rule->arg.status.code < 100 || rule->arg.status.code > 999) {
12256 memprintf(err, "expects an integer status code between 100 and 999");
12257 return ACT_RET_PRS_ERR;
12258 }
12259
12260 (*orig_arg)++;
12261 return ACT_RET_PRS_OK;
12262}
12263
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12264/* This function executes the "capture" action. It executes a fetch expression,
12265 * turns the result into a string and puts it in a capture slot. It always
12266 * returns 1. If an error occurs the action is cancelled, but the rule
12267 * processing continues.
12268 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12269enum act_return http_action_req_capture(struct act_rule *rule, struct proxy *px,
Willy Tarreau658b85b2015-09-27 10:00:49 +0200[diff] [blame]12270 struct session *sess, struct stream *s, int flags)
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12271{
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12272 struct sample *key;
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12273 struct cap_hdr *h = rule->arg.cap.hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12274 char **cap = s->req_cap;
12275 int len;
12276
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12277 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]12278 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12279 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12280
12281 if (cap[h->index] == NULL)
12282 cap[h->index] = pool_alloc2(h->pool);
12283
12284 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12285 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12286
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12287 len = key->data.u.str.len;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12288 if (len > h->len)
12289 len = h->len;
12290
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12291 memcpy(cap[h->index], key->data.u.str.str, len);
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12292 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12293 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12294}
12295
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12296/* This function executes the "capture" action and store the result in a
12297 * capture slot if exists. It executes a fetch expression, turns the result
12298 * into a string and puts it in a capture slot. It always returns 1. If an
12299 * error occurs the action is cancelled, but the rule processing continues.
12300 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12301enum 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]12302 struct session *sess, struct stream *s, int flags)
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12303{
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12304 struct sample *key;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12305 struct cap_hdr *h;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12306 char **cap = s->req_cap;
12307 struct proxy *fe = strm_fe(s);
12308 int len;
12309 int i;
12310
12311 /* Look for the original configuration. */
12312 for (h = fe->req_cap, i = fe->nb_req_cap - 1;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12313 h != NULL && i != rule->arg.capid.idx ;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12314 i--, h = h->next);
12315 if (!h)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12316 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12317
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12318 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]12319 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12320 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12321
12322 if (cap[h->index] == NULL)
12323 cap[h->index] = pool_alloc2(h->pool);
12324
12325 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12326 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12327
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12328 len = key->data.u.str.len;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12329 if (len > h->len)
12330 len = h->len;
12331
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12332 memcpy(cap[h->index], key->data.u.str.str, len);
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12333 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12334 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12335}
12336
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12337/* parse an "http-request capture" action. It takes a single argument which is
12338 * a sample fetch expression. It stores the expression into arg->act.p[0] and
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12339 * the allocated hdr_cap struct or the preallocated "id" into arg->act.p[1].
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12340 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12341 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12342enum act_parse_ret parse_http_req_capture(const char **args, int *orig_arg, struct proxy *px,
12343 struct act_rule *rule, char **err)
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12344{
12345 struct sample_expr *expr;
12346 struct cap_hdr *hdr;
12347 int cur_arg;
Willy Tarreau3986ac12015-05-08 16:13:42 +0200[diff] [blame]12348 int len = 0;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12349
12350 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12351 if (strcmp(args[cur_arg], "if") == 0 ||
12352 strcmp(args[cur_arg], "unless") == 0)
12353 break;
12354
12355 if (cur_arg < *orig_arg + 3) {
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12356 memprintf(err, "expects <expression> [ 'len' <length> | id <idx> ]");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12357 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12358 }
12359
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12360 cur_arg = *orig_arg;
12361 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12362 if (!expr)
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12363 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12364
12365 if (!(expr->fetch->val & SMP_VAL_FE_HRQ_HDR)) {
12366 memprintf(err,
12367 "fetch method '%s' extracts information from '%s', none of which is available here",
12368 args[cur_arg-1], sample_src_names(expr->fetch->use));
12369 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12370 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12371 }
12372
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12373 if (!args[cur_arg] || !*args[cur_arg]) {
12374 memprintf(err, "expects 'len or 'id'");
12375 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12376 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12377 }
12378
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12379 if (strcmp(args[cur_arg], "len") == 0) {
12380 cur_arg++;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12381
12382 if (!(px->cap & PR_CAP_FE)) {
12383 memprintf(err, "proxy '%s' has no frontend capability", px->id);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12384 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12385 }
12386
12387 proxy->conf.args.ctx = ARGC_CAP;
12388
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12389 if (!args[cur_arg]) {
12390 memprintf(err, "missing length value");
12391 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12392 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12393 }
12394 /* we copy the table name for now, it will be resolved later */
12395 len = atoi(args[cur_arg]);
12396 if (len <= 0) {
12397 memprintf(err, "length must be > 0");
12398 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12399 return ACT_RET_PRS_ERR;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12400 }
12401 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12402
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12403 if (!len) {
12404 memprintf(err, "a positive 'len' argument is mandatory");
12405 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12406 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12407 }
12408
Vincent Bernat02779b62016-04-03 13:48:43 +0200[diff] [blame]12409 hdr = calloc(1, sizeof(*hdr));
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12410 hdr->next = px->req_cap;
12411 hdr->name = NULL; /* not a header capture */
12412 hdr->namelen = 0;
12413 hdr->len = len;
12414 hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
12415 hdr->index = px->nb_req_cap++;
12416
12417 px->req_cap = hdr;
12418 px->to_log |= LW_REQHDR;
12419
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12420 rule->action = ACT_CUSTOM;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12421 rule->action_ptr = http_action_req_capture;
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12422 rule->arg.cap.expr = expr;
12423 rule->arg.cap.hdr = hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12424 }
12425
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12426 else if (strcmp(args[cur_arg], "id") == 0) {
12427 int id;
12428 char *error;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12429
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12430 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12431
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12432 if (!args[cur_arg]) {
12433 memprintf(err, "missing id value");
12434 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12435 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12436 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12437
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12438 id = strtol(args[cur_arg], &error, 10);
12439 if (*error != '\0') {
12440 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12441 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12442 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12443 }
12444 cur_arg++;
12445
12446 proxy->conf.args.ctx = ARGC_CAP;
12447
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12448 rule->action = ACT_CUSTOM;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12449 rule->action_ptr = http_action_req_capture_by_id;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12450 rule->arg.capid.expr = expr;
12451 rule->arg.capid.idx = id;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12452 }
12453
12454 else {
12455 memprintf(err, "expects 'len' or 'id', found '%s'", args[cur_arg]);
12456 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12457 return ACT_RET_PRS_ERR;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12458 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12459
12460 *orig_arg = cur_arg;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12461 return ACT_RET_PRS_OK;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12462}
12463
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12464/* This function executes the "capture" action and store the result in a
12465 * capture slot if exists. It executes a fetch expression, turns the result
12466 * into a string and puts it in a capture slot. It always returns 1. If an
12467 * error occurs the action is cancelled, but the rule processing continues.
12468 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12469enum 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]12470 struct session *sess, struct stream *s, int flags)
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12471{
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12472 struct sample *key;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12473 struct cap_hdr *h;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12474 char **cap = s->res_cap;
12475 struct proxy *fe = strm_fe(s);
12476 int len;
12477 int i;
12478
12479 /* Look for the original configuration. */
12480 for (h = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12481 h != NULL && i != rule->arg.capid.idx ;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12482 i--, h = h->next);
12483 if (!h)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12484 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12485
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12486 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]12487 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12488 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12489
12490 if (cap[h->index] == NULL)
12491 cap[h->index] = pool_alloc2(h->pool);
12492
12493 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12494 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12495
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12496 len = key->data.u.str.len;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12497 if (len > h->len)
12498 len = h->len;
12499
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12500 memcpy(cap[h->index], key->data.u.str.str, len);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12501 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame]12502 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12503}
12504
12505/* parse an "http-response capture" action. It takes a single argument which is
12506 * a sample fetch expression. It stores the expression into arg->act.p[0] and
12507 * the allocated hdr_cap struct od the preallocated id into arg->act.p[1].
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12508 * It returns ACT_RET_PRS_OK on success, ACT_RET_PRS_ERR on error.
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12509 */
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12510enum act_parse_ret parse_http_res_capture(const char **args, int *orig_arg, struct proxy *px,
12511 struct act_rule *rule, char **err)
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12512{
12513 struct sample_expr *expr;
12514 int cur_arg;
12515 int id;
12516 char *error;
12517
12518 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12519 if (strcmp(args[cur_arg], "if") == 0 ||
12520 strcmp(args[cur_arg], "unless") == 0)
12521 break;
12522
12523 if (cur_arg < *orig_arg + 3) {
Willy Tarreau29bdb1c2016-06-24 15:36:34 +0200[diff] [blame]12524 memprintf(err, "expects <expression> id <idx>");
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12525 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12526 }
12527
12528 cur_arg = *orig_arg;
12529 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12530 if (!expr)
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12531 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12532
12533 if (!(expr->fetch->val & SMP_VAL_FE_HRS_HDR)) {
12534 memprintf(err,
12535 "fetch method '%s' extracts information from '%s', none of which is available here",
12536 args[cur_arg-1], sample_src_names(expr->fetch->use));
12537 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12538 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12539 }
12540
12541 if (!args[cur_arg] || !*args[cur_arg]) {
Willy Tarreau29bdb1c2016-06-24 15:36:34 +0200[diff] [blame]12542 memprintf(err, "expects 'id'");
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12543 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12544 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12545 }
12546
12547 if (strcmp(args[cur_arg], "id") != 0) {
12548 memprintf(err, "expects 'id', found '%s'", args[cur_arg]);
12549 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12550 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12551 }
12552
12553 cur_arg++;
12554
12555 if (!args[cur_arg]) {
12556 memprintf(err, "missing id value");
12557 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12558 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12559 }
12560
12561 id = strtol(args[cur_arg], &error, 10);
12562 if (*error != '\0') {
12563 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12564 free(expr);
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12565 return ACT_RET_PRS_ERR;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12566 }
12567 cur_arg++;
12568
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12569 proxy->conf.args.ctx = ARGC_CAP;
12570
Thierry FOURNIER42148732015-09-02 17:17:33 +0200[diff] [blame]12571 rule->action = ACT_CUSTOM;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12572 rule->action_ptr = http_action_res_capture_by_id;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12573 rule->arg.capid.expr = expr;
12574 rule->arg.capid.idx = id;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12575
12576 *orig_arg = cur_arg;
Thierry FOURNIERafa80492015-08-19 09:04:15 +0200[diff] [blame]12577 return ACT_RET_PRS_OK;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12578}
12579
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12580/*
12581 * Return the struct http_req_action_kw associated to a keyword.
12582 */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12583struct action_kw *action_http_req_custom(const char *kw)
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12584{
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]12585 return action_lookup(&http_req_keywords.list, kw);
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12586}
12587
12588/*
12589 * Return the struct http_res_action_kw associated to a keyword.
12590 */
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12591struct action_kw *action_http_res_custom(const char *kw)
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12592{
Thierry FOURNIER322a1242015-08-19 09:07:47 +0200[diff] [blame]12593 return action_lookup(&http_res_keywords.list, kw);
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12594}
12595
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12596/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12597/* All supported ACL keywords must be declared here. */
12598/************************************************************************/
12599
12600/* Note: must not be declared <const> as its list will be overwritten.
12601 * Please take care of keeping this list alphabetically sorted.
12602 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]12603static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12604 { "base", "base", PAT_MATCH_STR },
12605 { "base_beg", "base", PAT_MATCH_BEG },
12606 { "base_dir", "base", PAT_MATCH_DIR },
12607 { "base_dom", "base", PAT_MATCH_DOM },
12608 { "base_end", "base", PAT_MATCH_END },
12609 { "base_len", "base", PAT_MATCH_LEN },
12610 { "base_reg", "base", PAT_MATCH_REG },
12611 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]12612
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12613 { "cook", "req.cook", PAT_MATCH_STR },
12614 { "cook_beg", "req.cook", PAT_MATCH_BEG },
12615 { "cook_dir", "req.cook", PAT_MATCH_DIR },
12616 { "cook_dom", "req.cook", PAT_MATCH_DOM },
12617 { "cook_end", "req.cook", PAT_MATCH_END },
12618 { "cook_len", "req.cook", PAT_MATCH_LEN },
12619 { "cook_reg", "req.cook", PAT_MATCH_REG },
12620 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12621
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12622 { "hdr", "req.hdr", PAT_MATCH_STR },
12623 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
12624 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
12625 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
12626 { "hdr_end", "req.hdr", PAT_MATCH_END },
12627 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
12628 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
12629 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12630
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12631 /* these two declarations uses strings with list storage (in place
12632 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
12633 * and delete functions are relative to the list management. The parse
12634 * and match method are related to the corresponding fetch methods. This
12635 * is very particular ACL declaration mode.
12636 */
12637 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
12638 { "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]12639
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12640 { "path", "path", PAT_MATCH_STR },
12641 { "path_beg", "path", PAT_MATCH_BEG },
12642 { "path_dir", "path", PAT_MATCH_DIR },
12643 { "path_dom", "path", PAT_MATCH_DOM },
12644 { "path_end", "path", PAT_MATCH_END },
12645 { "path_len", "path", PAT_MATCH_LEN },
12646 { "path_reg", "path", PAT_MATCH_REG },
12647 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12648
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12649 { "req_ver", "req.ver", PAT_MATCH_STR },
12650 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12651
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12652 { "scook", "res.cook", PAT_MATCH_STR },
12653 { "scook_beg", "res.cook", PAT_MATCH_BEG },
12654 { "scook_dir", "res.cook", PAT_MATCH_DIR },
12655 { "scook_dom", "res.cook", PAT_MATCH_DOM },
12656 { "scook_end", "res.cook", PAT_MATCH_END },
12657 { "scook_len", "res.cook", PAT_MATCH_LEN },
12658 { "scook_reg", "res.cook", PAT_MATCH_REG },
12659 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12660
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12661 { "shdr", "res.hdr", PAT_MATCH_STR },
12662 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
12663 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
12664 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
12665 { "shdr_end", "res.hdr", PAT_MATCH_END },
12666 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
12667 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
12668 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12669
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12670 { "url", "url", PAT_MATCH_STR },
12671 { "url_beg", "url", PAT_MATCH_BEG },
12672 { "url_dir", "url", PAT_MATCH_DIR },
12673 { "url_dom", "url", PAT_MATCH_DOM },
12674 { "url_end", "url", PAT_MATCH_END },
12675 { "url_len", "url", PAT_MATCH_LEN },
12676 { "url_reg", "url", PAT_MATCH_REG },
12677 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12678
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12679 { "urlp", "urlp", PAT_MATCH_STR },
12680 { "urlp_beg", "urlp", PAT_MATCH_BEG },
12681 { "urlp_dir", "urlp", PAT_MATCH_DIR },
12682 { "urlp_dom", "urlp", PAT_MATCH_DOM },
12683 { "urlp_end", "urlp", PAT_MATCH_END },
12684 { "urlp_len", "urlp", PAT_MATCH_LEN },
12685 { "urlp_reg", "urlp", PAT_MATCH_REG },
12686 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12687
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]12688 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12689}};
12690
12691/************************************************************************/
12692/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12693/************************************************************************/
12694/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]12695static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12696 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12697 { "base32", smp_fetch_base32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12698 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
12699
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]12700 /* capture are allocated and are permanent in the stream */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12701 { "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]12702
12703 /* retrieve these captures from the HTTP logs */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12704 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12705 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12706 { "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]12707
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12708 { "capture.res.hdr", smp_fetch_capture_header_res, ARG1(1,SINT), NULL, SMP_T_STR, SMP_USE_HRSHP },
12709 { "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]12710
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12711 /* cookie is valid in both directions (eg: for "stick ...") but cook*
12712 * are only here to match the ACL's name, are request-only and are used
12713 * for ACL compatibility only.
12714 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12715 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
12716 { "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]12717 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
12718 { "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]12719
12720 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
12721 * only here to match the ACL's name, are request-only and are used for
12722 * ACL compatibility only.
12723 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12724 { "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]12725 { "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]12726 { "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]12727 { "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]12728
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]12729 { "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]12730 { "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]12731 { "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]12732 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12733 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]12734 { "query", smp_fetch_query, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12735
12736 /* HTTP protocol on the request path */
12737 { "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]12738 { "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]12739
12740 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12741 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
12742 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12743
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]12744 { "req.body", smp_fetch_body, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12745 { "req.body_len", smp_fetch_body_len, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
12746 { "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]12747 { "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]12748
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12749 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12750 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
12751 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12752
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12753 /* 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]12754 { "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]12755 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
12756 { "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]12757
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12758 { "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]12759 { "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]12760 { "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]12761 { "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]12762 { "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]12763 { "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]12764 { "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]12765
12766 /* 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]12767 { "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]12768 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
12769 { "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]12770
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12771 { "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]12772 { "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]12773 { "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]12774 { "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]12775 { "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]12776 { "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]12777 { "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]12778
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12779 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12780 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12781 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
12782 { "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]12783 { "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]12784
12785 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12786 { "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]12787 { "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]12788 { "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]12789 { "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]12790
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12791 { "status", smp_fetch_stcode, 0, NULL, SMP_T_SINT, SMP_USE_HRSHP },
Thierry Fournier0e00dca2016-04-07 15:47:40 +0200[diff] [blame]12792 { "unique-id", smp_fetch_uniqueid, 0, NULL, SMP_T_STR, SMP_SRC_L4SRV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12793 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12794 { "url32", smp_fetch_url32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12795 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12796 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12797 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]12798 { "url_param", smp_fetch_url_param, ARG2(0,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
12799 { "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]12800 { "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]12801 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12802}};
12803
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12804
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12805/************************************************************************/
12806/* All supported converter keywords must be declared here. */
12807/************************************************************************/
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12808/* Note: must not be declared <const> as its list will be overwritten */
12809static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12810 { "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]12811 { "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]12812 { "capture-req", smp_conv_req_capture, ARG1(1,SINT), NULL, SMP_T_STR, SMP_T_STR},
12813 { "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]12814 { "url_dec", sample_conv_url_dec, 0, NULL, SMP_T_STR, SMP_T_STR},
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12815 { NULL, NULL, 0, 0, 0 },
12816}};
12817
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12818
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12819/************************************************************************/
12820/* All supported http-request action keywords must be declared here. */
12821/************************************************************************/
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12822struct action_kw_list http_req_actions = {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12823 .kw = {
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12824 { "capture", parse_http_req_capture },
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12825 { "set-method", parse_set_req_line },
12826 { "set-path", parse_set_req_line },
12827 { "set-query", parse_set_req_line },
12828 { "set-uri", parse_set_req_line },
Willy Tarreaucb703b02015-04-03 09:52:01 +0200[diff] [blame]12829 { NULL, NULL }
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12830 }
12831};
12832
Thierry FOURNIER36481b82015-08-19 09:01:53 +0200[diff] [blame]12833struct action_kw_list http_res_actions = {
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12834 .kw = {
12835 { "capture", parse_http_res_capture },
Thierry FOURNIER35d70ef2015-08-26 16:21:56 +0200[diff] [blame]12836 { "set-status", parse_http_set_status },
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12837 { NULL, NULL }
12838 }
12839};
12840
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12841__attribute__((constructor))
12842static void __http_protocol_init(void)
12843{
12844 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]12845 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12846 sample_register_convs(&sample_conv_kws);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12847 http_req_keywords_register(&http_req_actions);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12848 http_res_keywords_register(&http_res_actions);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12849}
12850
12851
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]12852/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]12853 * Local variables:
12854 * c-indent-level: 8
12855 * c-basic-offset: 8
12856 * End:
12857 */