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git01.mediatek.com / haproxy / 685c014e99195d60db0a9cdbc6483f9c44fd0a67 / . / src / proto_http.c
blob: c7ed0115967cfc42764d7b9042b3cdd82ee8bd48 [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
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]28#include <common/appsession.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]29#include <common/base64.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]30#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]31#include <common/compat.h>
32#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +0100[diff] [blame]33#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]34#include <common/memory.h>
35#include <common/mini-clist.h>
36#include <common/standard.h>
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]37#include <common/ticks.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]38#include <common/time.h>
39#include <common/uri_auth.h>
40#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]41
42#include <types/capture.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>
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]46#include <proto/arg.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]47#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]48#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]49#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]50#include <proto/checks.h>
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]51#include <proto/compression.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]52#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]53#include <proto/fd.h>
Willy Tarreau03fa5df2010-05-24 21:02:37 +0200[diff] [blame]54#include <proto/frontend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]55#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]56#include <proto/hdr_idx.h>
Thierry FOURNIERed66c292013-11-28 11:05:19 +0100[diff] [blame]57#include <proto/pattern.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]58#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]59#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]60#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]61#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]62#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]63#include <proto/server.h>
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]64#include <proto/stream.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]65#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]66#include <proto/task.h>
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]67#include <proto/pattern.h>
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]68#include <proto/vars.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]69
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]70const char HTTP_100[] =
71 "HTTP/1.1 100 Continue\r\n\r\n";
72
73const struct chunk http_100_chunk = {
74 .str = (char *)&HTTP_100,
75 .len = sizeof(HTTP_100)-1
76};
77
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]78/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]79const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]80 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]81 "Content-length: 0\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]82 "Location: "; /* not terminated since it will be concatenated with the URL */
83
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]84const char *HTTP_302 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]85 "HTTP/1.1 302 Found\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]86 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]87 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]88 "Location: "; /* not terminated since it will be concatenated with the URL */
89
90/* same as 302 except that the browser MUST retry with the GET method */
91const char *HTTP_303 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]92 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]93 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]94 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]95 "Location: "; /* not terminated since it will be concatenated with the URL */
96
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]97
98/* same as 302 except that the browser MUST retry with the same method */
99const char *HTTP_307 =
100 "HTTP/1.1 307 Temporary Redirect\r\n"
101 "Cache-Control: no-cache\r\n"
102 "Content-length: 0\r\n"
103 "Location: "; /* not terminated since it will be concatenated with the URL */
104
105/* same as 301 except that the browser MUST retry with the same method */
106const char *HTTP_308 =
107 "HTTP/1.1 308 Permanent Redirect\r\n"
108 "Content-length: 0\r\n"
109 "Location: "; /* not terminated since it will be concatenated with the URL */
110
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]111/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
112const char *HTTP_401_fmt =
113 "HTTP/1.0 401 Unauthorized\r\n"
114 "Cache-Control: no-cache\r\n"
115 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]116 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]117 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
118 "\r\n"
119 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
120
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]121const char *HTTP_407_fmt =
122 "HTTP/1.0 407 Unauthorized\r\n"
123 "Cache-Control: no-cache\r\n"
124 "Connection: close\r\n"
125 "Content-Type: text/html\r\n"
126 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
127 "\r\n"
Godbach1f1fae62014-12-17 16:32:05 +0800[diff] [blame]128 "<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]129
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]130
131const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]132 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]133 [HTTP_ERR_400] = 400,
134 [HTTP_ERR_403] = 403,
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]135 [HTTP_ERR_405] = 405,
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]136 [HTTP_ERR_408] = 408,
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]137 [HTTP_ERR_429] = 429,
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]138 [HTTP_ERR_500] = 500,
139 [HTTP_ERR_502] = 502,
140 [HTTP_ERR_503] = 503,
141 [HTTP_ERR_504] = 504,
142};
143
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]144static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]145 [HTTP_ERR_200] =
146 "HTTP/1.0 200 OK\r\n"
147 "Cache-Control: no-cache\r\n"
148 "Connection: close\r\n"
149 "Content-Type: text/html\r\n"
150 "\r\n"
151 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
152
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]153 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]154 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]155 "Cache-Control: no-cache\r\n"
156 "Connection: close\r\n"
157 "Content-Type: text/html\r\n"
158 "\r\n"
159 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
160
161 [HTTP_ERR_403] =
162 "HTTP/1.0 403 Forbidden\r\n"
163 "Cache-Control: no-cache\r\n"
164 "Connection: close\r\n"
165 "Content-Type: text/html\r\n"
166 "\r\n"
167 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
168
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]169 [HTTP_ERR_405] =
170 "HTTP/1.0 405 Method Not Allowed\r\n"
171 "Cache-Control: no-cache\r\n"
172 "Connection: close\r\n"
173 "Content-Type: text/html\r\n"
174 "\r\n"
175 "<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",
176
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]177 [HTTP_ERR_408] =
178 "HTTP/1.0 408 Request Time-out\r\n"
179 "Cache-Control: no-cache\r\n"
180 "Connection: close\r\n"
181 "Content-Type: text/html\r\n"
182 "\r\n"
183 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
184
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]185 [HTTP_ERR_429] =
186 "HTTP/1.0 429 Too Many Requests\r\n"
187 "Cache-Control: no-cache\r\n"
188 "Connection: close\r\n"
189 "Content-Type: text/html\r\n"
190 "\r\n"
191 "<html><body><h1>429 Too Many Requests</h1>\nYou have sent too many requests in a given amount of time.\n</body></html>\n",
192
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]193 [HTTP_ERR_500] =
194 "HTTP/1.0 500 Server Error\r\n"
195 "Cache-Control: no-cache\r\n"
196 "Connection: close\r\n"
197 "Content-Type: text/html\r\n"
198 "\r\n"
199 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
200
201 [HTTP_ERR_502] =
202 "HTTP/1.0 502 Bad Gateway\r\n"
203 "Cache-Control: no-cache\r\n"
204 "Connection: close\r\n"
205 "Content-Type: text/html\r\n"
206 "\r\n"
207 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
208
209 [HTTP_ERR_503] =
210 "HTTP/1.0 503 Service Unavailable\r\n"
211 "Cache-Control: no-cache\r\n"
212 "Connection: close\r\n"
213 "Content-Type: text/html\r\n"
214 "\r\n"
215 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
216
217 [HTTP_ERR_504] =
218 "HTTP/1.0 504 Gateway Time-out\r\n"
219 "Cache-Control: no-cache\r\n"
220 "Connection: close\r\n"
221 "Content-Type: text/html\r\n"
222 "\r\n"
223 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
224
225};
226
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]227/* status codes available for the stats admin page (strictly 4 chars length) */
228const char *stat_status_codes[STAT_STATUS_SIZE] = {
229 [STAT_STATUS_DENY] = "DENY",
230 [STAT_STATUS_DONE] = "DONE",
231 [STAT_STATUS_ERRP] = "ERRP",
232 [STAT_STATUS_EXCD] = "EXCD",
233 [STAT_STATUS_NONE] = "NONE",
234 [STAT_STATUS_PART] = "PART",
235 [STAT_STATUS_UNKN] = "UNKN",
236};
237
238
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]239/* List head of all known action keywords for "http-request" */
240struct http_req_action_kw_list http_req_keywords = {
241 .list = LIST_HEAD_INIT(http_req_keywords.list)
242};
243
244/* List head of all known action keywords for "http-response" */
245struct http_res_action_kw_list http_res_keywords = {
246 .list = LIST_HEAD_INIT(http_res_keywords.list)
247};
248
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]249/* We must put the messages here since GCC cannot initialize consts depending
250 * on strlen().
251 */
252struct chunk http_err_chunks[HTTP_ERR_SIZE];
253
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]254/* this struct is used between calls to smp_fetch_hdr() or smp_fetch_cookie() */
255static struct hdr_ctx static_hdr_ctx;
256
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]257#define FD_SETS_ARE_BITFIELDS
258#ifdef FD_SETS_ARE_BITFIELDS
259/*
260 * This map is used with all the FD_* macros to check whether a particular bit
261 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
262 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
263 * byte should be encoded. Be careful to always pass bytes from 0 to 255
264 * exclusively to the macros.
265 */
266fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
267fd_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]268fd_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]269
270#else
271#error "Check if your OS uses bitfields for fd_sets"
272#endif
273
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]274static 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]275
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]276void init_proto_http()
277{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]278 int i;
279 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]280 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]281
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]282 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
283 if (!http_err_msgs[msg]) {
284 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
285 abort();
286 }
287
288 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
289 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
290 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]291
292 /* initialize the log header encoding map : '{|}"#' should be encoded with
293 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
294 * URL encoding only requires '"', '#' to be encoded as well as non-
295 * printable characters above.
296 */
297 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
298 memset(url_encode_map, 0, sizeof(url_encode_map));
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]299 memset(http_encode_map, 0, sizeof(url_encode_map));
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]300 for (i = 0; i < 32; i++) {
301 FD_SET(i, hdr_encode_map);
302 FD_SET(i, url_encode_map);
303 }
304 for (i = 127; i < 256; i++) {
305 FD_SET(i, hdr_encode_map);
306 FD_SET(i, url_encode_map);
307 }
308
309 tmp = "\"#{|}";
310 while (*tmp) {
311 FD_SET(*tmp, hdr_encode_map);
312 tmp++;
313 }
314
315 tmp = "\"#";
316 while (*tmp) {
317 FD_SET(*tmp, url_encode_map);
318 tmp++;
319 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]320
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]321 /* initialize the http header encoding map. The draft httpbis define the
322 * header content as:
323 *
324 * HTTP-message = start-line
325 * *( header-field CRLF )
326 * CRLF
327 * [ message-body ]
328 * header-field = field-name ":" OWS field-value OWS
329 * field-value = *( field-content / obs-fold )
330 * field-content = field-vchar [ 1*( SP / HTAB ) field-vchar ]
331 * obs-fold = CRLF 1*( SP / HTAB )
332 * field-vchar = VCHAR / obs-text
333 * VCHAR = %x21-7E
334 * obs-text = %x80-FF
335 *
336 * All the chars are encoded except "VCHAR", "obs-text", SP and HTAB.
337 * The encoded chars are form 0x00 to 0x08, 0x0a to 0x1f and 0x7f. The
338 * "obs-fold" is volontary forgotten because haproxy remove this.
339 */
340 memset(http_encode_map, 0, sizeof(http_encode_map));
341 for (i = 0x00; i <= 0x08; i++)
342 FD_SET(i, http_encode_map);
343 for (i = 0x0a; i <= 0x1f; i++)
344 FD_SET(i, http_encode_map);
345 FD_SET(0x7f, http_encode_map);
346
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]347 /* memory allocations */
Willy Tarreau63986c72015-04-03 22:55:33 +0200[diff] [blame]348 pool2_http_txn = create_pool("http_txn", sizeof(struct http_txn), MEM_F_SHARED);
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]349 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]350 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]351}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]352
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]353/*
354 * We have 26 list of methods (1 per first letter), each of which can have
355 * up to 3 entries (2 valid, 1 null).
356 */
357struct http_method_desc {
Willy Tarreauc8987b32013-12-06 23:43:17 +0100[diff] [blame]358 enum http_meth_t meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]359 int len;
360 const char text[8];
361};
362
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]363const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]364 ['C' - 'A'] = {
365 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
366 },
367 ['D' - 'A'] = {
368 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
369 },
370 ['G' - 'A'] = {
371 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
372 },
373 ['H' - 'A'] = {
374 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
375 },
376 ['P' - 'A'] = {
377 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
378 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
379 },
380 ['T' - 'A'] = {
381 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
382 },
383 /* rest is empty like this :
384 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
385 */
386};
387
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]388const struct http_method_name http_known_methods[HTTP_METH_OTHER] = {
389 [HTTP_METH_NONE] = { "", 0 },
390 [HTTP_METH_OPTIONS] = { "OPTIONS", 7 },
391 [HTTP_METH_GET] = { "GET", 3 },
392 [HTTP_METH_HEAD] = { "HEAD", 4 },
393 [HTTP_METH_POST] = { "POST", 4 },
394 [HTTP_METH_PUT] = { "PUT", 3 },
395 [HTTP_METH_DELETE] = { "DELETE", 6 },
396 [HTTP_METH_TRACE] = { "TRACE", 5 },
397 [HTTP_METH_CONNECT] = { "CONNECT", 7 },
398};
399
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]400/* 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]401 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]402 * RFC2616 for those chars.
403 */
404
405const char http_is_spht[256] = {
406 [' '] = 1, ['\t'] = 1,
407};
408
409const char http_is_crlf[256] = {
410 ['\r'] = 1, ['\n'] = 1,
411};
412
413const char http_is_lws[256] = {
414 [' '] = 1, ['\t'] = 1,
415 ['\r'] = 1, ['\n'] = 1,
416};
417
418const char http_is_sep[256] = {
419 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
420 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
421 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
422 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
423 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
424};
425
426const char http_is_ctl[256] = {
427 [0 ... 31] = 1,
428 [127] = 1,
429};
430
431/*
432 * A token is any ASCII char that is neither a separator nor a CTL char.
433 * Do not overwrite values in assignment since gcc-2.95 will not handle
434 * them correctly. Instead, define every non-CTL char's status.
435 */
436const char http_is_token[256] = {
437 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
438 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
439 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
440 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
441 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
442 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
443 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
444 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
445 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
446 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
447 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
448 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
449 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
450 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
451 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
452 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
453 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
454 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
455 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
456 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
457 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
458 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
459 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
460 ['|'] = 1, ['}'] = 0, ['~'] = 1,
461};
462
463
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]464/*
465 * An http ver_token is any ASCII which can be found in an HTTP version,
466 * which includes 'H', 'T', 'P', '/', '.' and any digit.
467 */
468const char http_is_ver_token[256] = {
469 ['.'] = 1, ['/'] = 1,
470 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
471 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
Thierry FOURNIER63d692c2015-02-28 19:03:56 +0100[diff] [blame]472 ['H'] = 1, ['P'] = 1, ['R'] = 1, ['S'] = 1, ['T'] = 1,
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]473};
474
475
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]476/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]477 * Adds a header and its CRLF at the tail of the message's buffer, just before
478 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]479 * The header is also automatically added to the index <hdr_idx>, and the end
480 * of headers is automatically adjusted. The number of bytes added is returned
481 * on success, otherwise <0 is returned indicating an error.
482 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]483int 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]484{
485 int bytes, len;
486
487 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]488 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]489 if (!bytes)
490 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]491 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]492 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
493}
494
495/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]496 * Adds a header and its CRLF at the tail of the message's buffer, just before
497 * 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]498 * the buffer is only opened and the space reserved, but nothing is copied.
499 * The header is also automatically added to the index <hdr_idx>, and the end
500 * of headers is automatically adjusted. The number of bytes added is returned
501 * on success, otherwise <0 is returned indicating an error.
502 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]503int http_header_add_tail2(struct http_msg *msg,
504 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]505{
506 int bytes;
507
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]508 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]509 if (!bytes)
510 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]511 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]512 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
513}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]514
515/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]516 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
517 * If so, returns the position of the first non-space character relative to
518 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
519 * to return a pointer to the place after the first space. Returns 0 if the
520 * header name does not match. Checks are case-insensitive.
521 */
522int http_header_match2(const char *hdr, const char *end,
523 const char *name, int len)
524{
525 const char *val;
526
527 if (hdr + len >= end)
528 return 0;
529 if (hdr[len] != ':')
530 return 0;
531 if (strncasecmp(hdr, name, len) != 0)
532 return 0;
533 val = hdr + len + 1;
534 while (val < end && HTTP_IS_SPHT(*val))
535 val++;
536 if ((val >= end) && (len + 2 <= end - hdr))
537 return len + 2; /* we may replace starting from second space */
538 return val - hdr;
539}
540
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]541/* Find the first or next occurrence of header <name> in message buffer <sol>
542 * using headers index <idx>, and return it in the <ctx> structure. This
543 * structure holds everything necessary to use the header and find next
544 * occurrence. If its <idx> member is 0, the header is searched from the
545 * beginning. Otherwise, the next occurrence is returned. The function returns
546 * 1 when it finds a value, and 0 when there is no more. It is very similar to
547 * http_find_header2() except that it is designed to work with full-line headers
548 * whose comma is not a delimiter but is part of the syntax. As a special case,
549 * if ctx->val is NULL when searching for a new values of a header, the current
550 * header is rescanned. This allows rescanning after a header deletion.
551 */
552int http_find_full_header2(const char *name, int len,
553 char *sol, struct hdr_idx *idx,
554 struct hdr_ctx *ctx)
555{
556 char *eol, *sov;
557 int cur_idx, old_idx;
558
559 cur_idx = ctx->idx;
560 if (cur_idx) {
561 /* We have previously returned a header, let's search another one */
562 sol = ctx->line;
563 eol = sol + idx->v[cur_idx].len;
564 goto next_hdr;
565 }
566
567 /* first request for this header */
568 sol += hdr_idx_first_pos(idx);
569 old_idx = 0;
570 cur_idx = hdr_idx_first_idx(idx);
571 while (cur_idx) {
572 eol = sol + idx->v[cur_idx].len;
573
574 if (len == 0) {
575 /* No argument was passed, we want any header.
576 * To achieve this, we simply build a fake request. */
577 while (sol + len < eol && sol[len] != ':')
578 len++;
579 name = sol;
580 }
581
582 if ((len < eol - sol) &&
583 (sol[len] == ':') &&
584 (strncasecmp(sol, name, len) == 0)) {
585 ctx->del = len;
586 sov = sol + len + 1;
587 while (sov < eol && http_is_lws[(unsigned char)*sov])
588 sov++;
589
590 ctx->line = sol;
591 ctx->prev = old_idx;
592 ctx->idx = cur_idx;
593 ctx->val = sov - sol;
594 ctx->tws = 0;
595 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
596 eol--;
597 ctx->tws++;
598 }
599 ctx->vlen = eol - sov;
600 return 1;
601 }
602 next_hdr:
603 sol = eol + idx->v[cur_idx].cr + 1;
604 old_idx = cur_idx;
605 cur_idx = idx->v[cur_idx].next;
606 }
607 return 0;
608}
609
Willy Tarreauc90dc232015-02-20 13:51:36 +0100[diff] [blame]610/* Find the first or next header field in message buffer <sol> using headers
611 * index <idx>, and return it in the <ctx> structure. This structure holds
612 * everything necessary to use the header and find next occurrence. If its
613 * <idx> member is 0, the first header is retrieved. Otherwise, the next
614 * occurrence is returned. The function returns 1 when it finds a value, and
615 * 0 when there is no more. It is equivalent to http_find_full_header2() with
616 * no header name.
617 */
618int http_find_next_header(char *sol, struct hdr_idx *idx, struct hdr_ctx *ctx)
619{
620 char *eol, *sov;
621 int cur_idx, old_idx;
622 int len;
623
624 cur_idx = ctx->idx;
625 if (cur_idx) {
626 /* We have previously returned a header, let's search another one */
627 sol = ctx->line;
628 eol = sol + idx->v[cur_idx].len;
629 goto next_hdr;
630 }
631
632 /* first request for this header */
633 sol += hdr_idx_first_pos(idx);
634 old_idx = 0;
635 cur_idx = hdr_idx_first_idx(idx);
636 while (cur_idx) {
637 eol = sol + idx->v[cur_idx].len;
638
639 len = 0;
640 while (1) {
641 if (len >= eol - sol)
642 goto next_hdr;
643 if (sol[len] == ':')
644 break;
645 len++;
646 }
647
648 ctx->del = len;
649 sov = sol + len + 1;
650 while (sov < eol && http_is_lws[(unsigned char)*sov])
651 sov++;
652
653 ctx->line = sol;
654 ctx->prev = old_idx;
655 ctx->idx = cur_idx;
656 ctx->val = sov - sol;
657 ctx->tws = 0;
658
659 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
660 eol--;
661 ctx->tws++;
662 }
663 ctx->vlen = eol - sov;
664 return 1;
665
666 next_hdr:
667 sol = eol + idx->v[cur_idx].cr + 1;
668 old_idx = cur_idx;
669 cur_idx = idx->v[cur_idx].next;
670 }
671 return 0;
672}
673
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]674/* Find the end of the header value contained between <s> and <e>. See RFC2616,
675 * par 2.2 for more information. Note that it requires a valid header to return
676 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]677 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]678char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]679{
680 int quoted, qdpair;
681
682 quoted = qdpair = 0;
683 for (; s < e; s++) {
684 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]685 else if (quoted) {
686 if (*s == '\\') qdpair = 1;
687 else if (*s == '"') quoted = 0;
688 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]689 else if (*s == '"') quoted = 1;
690 else if (*s == ',') return s;
691 }
692 return s;
693}
694
695/* Find the first or next occurrence of header <name> in message buffer <sol>
696 * using headers index <idx>, and return it in the <ctx> structure. This
697 * structure holds everything necessary to use the header and find next
698 * occurrence. If its <idx> member is 0, the header is searched from the
699 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]700 * 1 when it finds a value, and 0 when there is no more. It is designed to work
701 * with headers defined as comma-separated lists. As a special case, if ctx->val
702 * is NULL when searching for a new values of a header, the current header is
703 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]704 */
705int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]706 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]707 struct hdr_ctx *ctx)
708{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]709 char *eol, *sov;
710 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]711
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]712 cur_idx = ctx->idx;
713 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]714 /* We have previously returned a value, let's search
715 * another one on the same line.
716 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]717 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]718 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]719 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]720 eol = sol + idx->v[cur_idx].len;
721
722 if (sov >= eol)
723 /* no more values in this header */
724 goto next_hdr;
725
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]726 /* values remaining for this header, skip the comma but save it
727 * for later use (eg: for header deletion).
728 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]729 sov++;
730 while (sov < eol && http_is_lws[(unsigned char)*sov])
731 sov++;
732
733 goto return_hdr;
734 }
735
736 /* first request for this header */
737 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]738 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]739 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]740 while (cur_idx) {
741 eol = sol + idx->v[cur_idx].len;
742
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]743 if (len == 0) {
744 /* No argument was passed, we want any header.
745 * To achieve this, we simply build a fake request. */
746 while (sol + len < eol && sol[len] != ':')
747 len++;
748 name = sol;
749 }
750
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]751 if ((len < eol - sol) &&
752 (sol[len] == ':') &&
753 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]754 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]755 sov = sol + len + 1;
756 while (sov < eol && http_is_lws[(unsigned char)*sov])
757 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]758
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]759 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]760 ctx->prev = old_idx;
761 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]762 ctx->idx = cur_idx;
763 ctx->val = sov - sol;
764
765 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]766 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]767 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]768 eol--;
769 ctx->tws++;
770 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]771 ctx->vlen = eol - sov;
772 return 1;
773 }
774 next_hdr:
775 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]776 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]777 cur_idx = idx->v[cur_idx].next;
778 }
779 return 0;
780}
781
782int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]783 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]784 struct hdr_ctx *ctx)
785{
786 return http_find_header2(name, strlen(name), sol, idx, ctx);
787}
788
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]789/* Remove one value of a header. This only works on a <ctx> returned by one of
790 * the http_find_header functions. The value is removed, as well as surrounding
791 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]792 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]793 * message <msg>. The new index is returned. If it is zero, it means there is
794 * no more header, so any processing may stop. The ctx is always left in a form
795 * that can be handled by http_find_header2() to find next occurrence.
796 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]797int 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]798{
799 int cur_idx = ctx->idx;
800 char *sol = ctx->line;
801 struct hdr_idx_elem *hdr;
802 int delta, skip_comma;
803
804 if (!cur_idx)
805 return 0;
806
807 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]808 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]809 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]810 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]811 http_msg_move_end(msg, delta);
812 idx->used--;
813 hdr->len = 0; /* unused entry */
814 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]815 if (idx->tail == ctx->idx)
816 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]817 ctx->idx = ctx->prev; /* walk back to the end of previous header */
Willy Tarreau7c1c2172015-01-07 17:23:50 +0100[diff] [blame]818 ctx->line -= idx->v[ctx->idx].len + idx->v[ctx->idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]819 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]820 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]821 return ctx->idx;
822 }
823
824 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]825 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
826 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]827 */
828
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]829 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]830 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]831 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]832 NULL, 0);
833 hdr->len += delta;
834 http_msg_move_end(msg, delta);
835 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]836 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]837 return ctx->idx;
838}
839
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]840/* This function handles a server error at the stream interface level. The
841 * stream interface is assumed to be already in a closed state. An optional
842 * message is copied into the input buffer, and an HTTP status code stored.
843 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]844 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]845 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]846static void http_server_error(struct stream *s, struct stream_interface *si,
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]847 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]848{
Willy Tarreau2bb4a962014-11-28 11:11:05 +0100[diff] [blame]849 channel_auto_read(si_oc(si));
850 channel_abort(si_oc(si));
851 channel_auto_close(si_oc(si));
852 channel_erase(si_oc(si));
853 channel_auto_close(si_ic(si));
854 channel_auto_read(si_ic(si));
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]855 if (status > 0 && msg) {
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]856 s->txn->status = status;
Willy Tarreau2bb4a962014-11-28 11:11:05 +0100[diff] [blame]857 bo_inject(si_ic(si), msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]858 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]859 if (!(s->flags & SF_ERR_MASK))
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]860 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]861 if (!(s->flags & SF_FINST_MASK))
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]862 s->flags |= finst;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]863}
864
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]865/* This function returns the appropriate error location for the given stream
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]866 * and message.
867 */
868
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]869struct chunk *http_error_message(struct stream *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]870{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]871 if (s->be->errmsg[msgnum].str)
872 return &s->be->errmsg[msgnum];
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]873 else if (strm_fe(s)->errmsg[msgnum].str)
874 return &strm_fe(s)->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]875 else
876 return &http_err_chunks[msgnum];
877}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]878
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]879/*
880 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
881 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
882 */
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]883enum http_meth_t find_http_meth(const char *str, const int len)
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]884{
885 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]886 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]887
888 m = ((unsigned)*str - 'A');
889
890 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]891 for (h = http_methods[m]; h->len > 0; h++) {
892 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]893 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]894 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]895 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]896 };
897 return HTTP_METH_OTHER;
898 }
899 return HTTP_METH_NONE;
900
901}
902
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]903/* Parse the URI from the given transaction (which is assumed to be in request
904 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
905 * It is returned otherwise.
906 */
907static char *
908http_get_path(struct http_txn *txn)
909{
910 char *ptr, *end;
911
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]912 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]913 end = ptr + txn->req.sl.rq.u_l;
914
915 if (ptr >= end)
916 return NULL;
917
918 /* RFC2616, par. 5.1.2 :
919 * Request-URI = "*" | absuri | abspath | authority
920 */
921
922 if (*ptr == '*')
923 return NULL;
924
925 if (isalpha((unsigned char)*ptr)) {
926 /* this is a scheme as described by RFC3986, par. 3.1 */
927 ptr++;
928 while (ptr < end &&
929 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
930 ptr++;
931 /* skip '://' */
932 if (ptr == end || *ptr++ != ':')
933 return NULL;
934 if (ptr == end || *ptr++ != '/')
935 return NULL;
936 if (ptr == end || *ptr++ != '/')
937 return NULL;
938 }
939 /* skip [user[:passwd]@]host[:[port]] */
940
941 while (ptr < end && *ptr != '/')
942 ptr++;
943
944 if (ptr == end)
945 return NULL;
946
947 /* OK, we got the '/' ! */
948 return ptr;
949}
950
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]951/* Parse the URI from the given string and look for the "/" beginning the PATH.
952 * If not found, return NULL. It is returned otherwise.
953 */
954static char *
955http_get_path_from_string(char *str)
956{
957 char *ptr = str;
958
959 /* RFC2616, par. 5.1.2 :
960 * Request-URI = "*" | absuri | abspath | authority
961 */
962
963 if (*ptr == '*')
964 return NULL;
965
966 if (isalpha((unsigned char)*ptr)) {
967 /* this is a scheme as described by RFC3986, par. 3.1 */
968 ptr++;
969 while (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.')
970 ptr++;
971 /* skip '://' */
972 if (*ptr == '\0' || *ptr++ != ':')
973 return NULL;
974 if (*ptr == '\0' || *ptr++ != '/')
975 return NULL;
976 if (*ptr == '\0' || *ptr++ != '/')
977 return NULL;
978 }
979 /* skip [user[:passwd]@]host[:[port]] */
980
981 while (*ptr != '\0' && *ptr != ' ' && *ptr != '/')
982 ptr++;
983
984 if (*ptr == '\0' || *ptr == ' ')
985 return NULL;
986
987 /* OK, we got the '/' ! */
988 return ptr;
989}
990
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]991/* Returns a 302 for a redirectable request that reaches a server working in
992 * in redirect mode. This may only be called just after the stream interface
993 * has moved to SI_ST_ASS. Unprocessable requests are left unchanged and will
994 * follow normal proxy processing. NOTE: this function is designed to support
995 * being called once data are scheduled for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]996 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]997void http_perform_server_redirect(struct stream *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]998{
999 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1000 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1001 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1002 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1003
1004 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1005 trash.len = strlen(HTTP_302);
1006 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1007
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]1008 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1009
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1010 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1011 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1012 return;
1013
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]1014 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1015 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1016 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
1017 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]1018 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1019
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1020 /* 3: add the request URI. Since it was already forwarded, we need
1021 * to temporarily rewind the buffer.
1022 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1023 txn = s->txn;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1024 b_rew(s->req.buf, rewind = http_hdr_rewind(&txn->req));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1025
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1026 path = http_get_path(txn);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1027 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]1028
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1029 b_adv(s->req.buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1030
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1031 if (!path)
1032 return;
1033
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1034 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1035 return;
1036
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1037 memcpy(trash.str + trash.len, path, len);
1038 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1039
1040 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1041 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
1042 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1043 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1044 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
1045 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1046 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1047
1048 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]1049 si_shutr(si);
1050 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1051 si->err_type = SI_ET_NONE;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1052 si->state = SI_ST_CLO;
1053
1054 /* send the message */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1055 http_server_error(s, si, SF_ERR_LOCAL, SF_FINST_C, 302, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1056
1057 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau4521ba62013-01-24 01:25:25 +0100[diff] [blame]1058 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500[diff] [blame]1059 srv_set_sess_last(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1060}
1061
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]1062/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1063 * that the server side is closed. Note that err_type is actually a
1064 * bitmask, where almost only aborts may be cumulated with other
1065 * values. We consider that aborted operations are more important
1066 * than timeouts or errors due to the fact that nobody else in the
1067 * logs might explain incomplete retries. All others should avoid
1068 * being cumulated. It should normally not be possible to have multiple
1069 * aborts at once, but just in case, the first one in sequence is reported.
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1070 * Note that connection errors appearing on the second request of a keep-alive
1071 * connection are not reported since this allows the client to retry.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1072 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1073void http_return_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1074{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]1075 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1076
1077 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1078 http_server_error(s, si, SF_ERR_CLICL, SF_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1079 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1080 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1081 http_server_error(s, si, SF_ERR_CLICL, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1082 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1083 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1084 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1085 http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1086 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1087 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1088 http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1089 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1090 else if (err_type & SI_ET_CONN_TO)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1091 http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1092 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1093 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1094 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1095 http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_C,
1096 503, (s->flags & SF_SRV_REUSED) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1097 http_error_message(s, HTTP_ERR_503));
Willy Tarreau2d400bb2012-05-14 12:11:47 +0200[diff] [blame]1098 else if (err_type & SI_ET_CONN_RES)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1099 http_server_error(s, si, SF_ERR_RESOURCE, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1100 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1101 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1102 else /* SI_ET_CONN_OTHER and others */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1103 http_server_error(s, si, SF_ERR_INTERNAL, SF_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1104 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1105}
1106
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1107extern const char sess_term_cond[8];
1108extern const char sess_fin_state[8];
1109extern const char *monthname[12];
Willy Tarreau63986c72015-04-03 22:55:33 +0200[diff] [blame]1110struct pool_head *pool2_http_txn;
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]1111struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]1112struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]1113struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1114
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1115/*
1116 * Capture headers from message starting at <som> according to header list
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1117 * <cap_hdr>, and fill the <cap> pointers appropriately.
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1118 */
1119void capture_headers(char *som, struct hdr_idx *idx,
1120 char **cap, struct cap_hdr *cap_hdr)
1121{
1122 char *eol, *sol, *col, *sov;
1123 int cur_idx;
1124 struct cap_hdr *h;
1125 int len;
1126
1127 sol = som + hdr_idx_first_pos(idx);
1128 cur_idx = hdr_idx_first_idx(idx);
1129
1130 while (cur_idx) {
1131 eol = sol + idx->v[cur_idx].len;
1132
1133 col = sol;
1134 while (col < eol && *col != ':')
1135 col++;
1136
1137 sov = col + 1;
1138 while (sov < eol && http_is_lws[(unsigned char)*sov])
1139 sov++;
1140
1141 for (h = cap_hdr; h; h = h->next) {
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1142 if (h->namelen && (h->namelen == col - sol) &&
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1143 (strncasecmp(sol, h->name, h->namelen) == 0)) {
1144 if (cap[h->index] == NULL)
1145 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]1146 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1147
1148 if (cap[h->index] == NULL) {
1149 Alert("HTTP capture : out of memory.\n");
1150 continue;
1151 }
1152
1153 len = eol - sov;
1154 if (len > h->len)
1155 len = h->len;
1156
1157 memcpy(cap[h->index], sov, len);
1158 cap[h->index][len]=0;
1159 }
1160 }
1161 sol = eol + idx->v[cur_idx].cr + 1;
1162 cur_idx = idx->v[cur_idx].next;
1163 }
1164}
1165
1166
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1167/* either we find an LF at <ptr> or we jump to <bad>.
1168 */
1169#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
1170
1171/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
1172 * otherwise to <http_msg_ood> with <state> set to <st>.
1173 */
1174#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
1175 ptr++; \
1176 if (likely(ptr < end)) \
1177 goto good; \
1178 else { \
1179 state = (st); \
1180 goto http_msg_ood; \
1181 } \
1182 } while (0)
1183
1184
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1185/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1186 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1187 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
1188 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
1189 * will give undefined results.
1190 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1191 * and that msg->sol points to the beginning of the response.
1192 * If a complete line is found (which implies that at least one CR or LF is
1193 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1194 * returned indicating an incomplete line (which does not mean that parts have
1195 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1196 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1197 * upon next call.
1198 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1199 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1200 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1201 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1202 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1203 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1204const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1205 enum ht_state state, const char *ptr, const char *end,
1206 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1207{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1208 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1209
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1210 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1211 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1212 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1213 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1214 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
1215
1216 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1217 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1218 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1219 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1220 state = HTTP_MSG_ERROR;
1221 break;
1222
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1223 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1224 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1225 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1226 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1227 goto http_msg_rpcode;
1228 }
1229 if (likely(HTTP_IS_SPHT(*ptr)))
1230 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1231 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1232 state = HTTP_MSG_ERROR;
1233 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1234
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1235 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1236 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1237 if (likely(!HTTP_IS_LWS(*ptr)))
1238 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
1239
1240 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1241 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1242 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1243 }
1244
1245 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1246 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1247 http_msg_rsp_reason:
1248 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1249 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1250 msg->sl.st.r_l = 0;
1251 goto http_msg_rpline_eol;
1252
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1253 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1254 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1255 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1256 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1257 goto http_msg_rpreason;
1258 }
1259 if (likely(HTTP_IS_SPHT(*ptr)))
1260 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1261 /* so it's a CR/LF, so there is no reason phrase */
1262 goto http_msg_rsp_reason;
1263
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1264 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1265 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1266 if (likely(!HTTP_IS_CRLF(*ptr)))
1267 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1268 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1269 http_msg_rpline_eol:
1270 /* We have seen the end of line. Note that we do not
1271 * necessarily have the \n yet, but at least we know that we
1272 * have EITHER \r OR \n, otherwise the response would not be
1273 * complete. We can then record the response length and return
1274 * to the caller which will be able to register it.
1275 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1276 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1277 return ptr;
1278
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1279 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1280#ifdef DEBUG_FULL
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1281 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1282 exit(1);
1283#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1284 ;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1285 }
1286
1287 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1288 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1289 if (ret_state)
1290 *ret_state = state;
1291 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1292 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1293 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1294}
1295
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1296/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1297 * This function parses a request line between <ptr> and <end>, starting with
1298 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1299 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1300 * will give undefined results.
1301 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1302 * and that msg->sol points to the beginning of the request.
1303 * If a complete line is found (which implies that at least one CR or LF is
1304 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1305 * returned indicating an incomplete line (which does not mean that parts have
1306 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1307 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1308 * upon next call.
1309 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1310 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1311 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1312 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1313 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1314 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1315const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1316 enum ht_state state, const char *ptr, const char *end,
1317 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1318{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1319 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1320
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1321 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1322 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1323 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1324 if (likely(HTTP_IS_TOKEN(*ptr)))
1325 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1326
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1327 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1328 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1329 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1330 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1331
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1332 if (likely(HTTP_IS_CRLF(*ptr))) {
1333 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1334 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1335 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1336 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1337 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1338 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1339 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1340 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1341 msg->sl.rq.v_l = 0;
1342 goto http_msg_rqline_eol;
1343 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1344 state = HTTP_MSG_ERROR;
1345 break;
1346
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1347 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1348 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1349 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1350 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1351 goto http_msg_rquri;
1352 }
1353 if (likely(HTTP_IS_SPHT(*ptr)))
1354 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1355 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1356 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1357
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1358 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1359 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1360 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1361 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1362
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1363 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1364 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1365 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1366 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1367
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1368 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1369 /* non-ASCII chars are forbidden unless option
1370 * accept-invalid-http-request is enabled in the frontend.
1371 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1372 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1373 if (msg->err_pos < -1)
1374 goto invalid_char;
1375 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1376 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1377 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1378 }
1379
1380 if (likely(HTTP_IS_CRLF(*ptr))) {
1381 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1382 goto http_msg_req09_uri_e;
1383 }
1384
1385 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1386 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1387 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1388 state = HTTP_MSG_ERROR;
1389 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1390
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1391 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1392 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1393 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1394 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1395 goto http_msg_rqver;
1396 }
1397 if (likely(HTTP_IS_SPHT(*ptr)))
1398 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1399 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1400 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1401
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1402 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1403 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1404 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1405 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1406
1407 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1408 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1409 http_msg_rqline_eol:
1410 /* We have seen the end of line. Note that we do not
1411 * necessarily have the \n yet, but at least we know that we
1412 * have EITHER \r OR \n, otherwise the request would not be
1413 * complete. We can then record the request length and return
1414 * to the caller which will be able to register it.
1415 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1416 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1417 return ptr;
1418 }
1419
1420 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1421 state = HTTP_MSG_ERROR;
1422 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1423
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1424 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1425#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1426 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1427 exit(1);
1428#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1429 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1430 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1431
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1432 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1433 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1434 if (ret_state)
1435 *ret_state = state;
1436 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1437 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1438 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1439}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1440
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1441/*
1442 * Returns the data from Authorization header. Function may be called more
1443 * than once so data is stored in txn->auth_data. When no header is found
1444 * 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]1445 * searching again for something we are unable to find anyway. However, if
1446 * the result if valid, the cache is not reused because we would risk to
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1447 * have the credentials overwritten by another stream in parallel.
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1448 */
1449
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]1450/* This bufffer is initialized in the file 'src/haproxy.c'. This length is
1451 * set according to global.tune.bufsize.
1452 */
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1453char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1454
1455int
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1456get_http_auth(struct stream *s)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1457{
1458
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1459 struct http_txn *txn = s->txn;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1460 struct chunk auth_method;
1461 struct hdr_ctx ctx;
1462 char *h, *p;
1463 int len;
1464
1465#ifdef DEBUG_AUTH
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1466 printf("Auth for stream %p: %d\n", s, txn->auth.method);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1467#endif
1468
1469 if (txn->auth.method == HTTP_AUTH_WRONG)
1470 return 0;
1471
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1472 txn->auth.method = HTTP_AUTH_WRONG;
1473
1474 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1475
1476 if (txn->flags & TX_USE_PX_CONN) {
1477 h = "Proxy-Authorization";
1478 len = strlen(h);
1479 } else {
1480 h = "Authorization";
1481 len = strlen(h);
1482 }
1483
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1484 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]1485 return 0;
1486
1487 h = ctx.line + ctx.val;
1488
1489 p = memchr(h, ' ', ctx.vlen);
1490 if (!p || p == h)
1491 return 0;
1492
1493 chunk_initlen(&auth_method, h, 0, p-h);
1494 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1495
1496 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1497
1498 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1499 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1500
1501 if (len < 0)
1502 return 0;
1503
1504
1505 get_http_auth_buff[len] = '\0';
1506
1507 p = strchr(get_http_auth_buff, ':');
1508
1509 if (!p)
1510 return 0;
1511
1512 txn->auth.user = get_http_auth_buff;
1513 *p = '\0';
1514 txn->auth.pass = p+1;
1515
1516 txn->auth.method = HTTP_AUTH_BASIC;
1517 return 1;
1518 }
1519
1520 return 0;
1521}
1522
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1523
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1524/*
1525 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1526 * depending on the initial msg->msg_state. The caller is responsible for
1527 * ensuring that the message does not wrap. The function can be preempted
1528 * everywhere when data are missing and recalled at the exact same location
1529 * with no information loss. The message may even be realigned between two
1530 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1531 * 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]1532 * fields. Note that msg->sol will be initialized after completing the first
1533 * state, so that none of the msg pointers has to be initialized prior to the
1534 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1535 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1536void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1537{
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1538 enum ht_state state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1539 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1540 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1541
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1542 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1543 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1544 ptr = buf->p + msg->next;
1545 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1546
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1547 if (unlikely(ptr >= end))
1548 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1549
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1550 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1551 /*
1552 * First, states that are specific to the response only.
1553 * We check them first so that request and headers are
1554 * closer to each other (accessed more often).
1555 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1556 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1557 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1558 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1559 /* we have a start of message, but we have to check
1560 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1561 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1562 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1563 if (unlikely(ptr != buf->p)) {
1564 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1565 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1566 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1567 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1568 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1569 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1570 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1571 hdr_idx_init(idx);
1572 state = HTTP_MSG_RPVER;
1573 goto http_msg_rpver;
1574 }
1575
1576 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1577 goto http_msg_invalid;
1578
1579 if (unlikely(*ptr == '\n'))
1580 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1581 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1582 /* stop here */
1583
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1584 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1585 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1586 EXPECT_LF_HERE(ptr, http_msg_invalid);
1587 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1588 /* stop here */
1589
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1590 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1591 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1592 case HTTP_MSG_RPVER_SP:
1593 case HTTP_MSG_RPCODE:
1594 case HTTP_MSG_RPCODE_SP:
1595 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1596 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1597 state, ptr, end,
1598 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1599 if (unlikely(!ptr))
1600 return;
1601
1602 /* we have a full response and we know that we have either a CR
1603 * or an LF at <ptr>.
1604 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1605 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1606
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1607 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1608 if (likely(*ptr == '\r'))
1609 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1610 goto http_msg_rpline_end;
1611
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1612 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1613 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1614 /* msg->sol must point to the first of CR or LF. */
1615 EXPECT_LF_HERE(ptr, http_msg_invalid);
1616 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1617 /* stop here */
1618
1619 /*
1620 * Second, states that are specific to the request only
1621 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1622 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1623 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1624 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1625 /* we have a start of message, but we have to check
1626 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1627 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1628 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1629 if (likely(ptr != buf->p)) {
1630 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1631 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1632 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1633 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1634 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1635 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1636 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1637 state = HTTP_MSG_RQMETH;
1638 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1639 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1640
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1641 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1642 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1643
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1644 if (unlikely(*ptr == '\n'))
1645 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1646 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1647 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1648
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1649 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1650 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1651 EXPECT_LF_HERE(ptr, http_msg_invalid);
1652 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1653 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1654
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1655 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1656 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1657 case HTTP_MSG_RQMETH_SP:
1658 case HTTP_MSG_RQURI:
1659 case HTTP_MSG_RQURI_SP:
1660 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1661 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1662 state, ptr, end,
1663 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1664 if (unlikely(!ptr))
1665 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1666
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1667 /* we have a full request and we know that we have either a CR
1668 * or an LF at <ptr>.
1669 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1670 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1671
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1672 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1673 if (likely(*ptr == '\r'))
1674 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1675 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1676
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1677 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1678 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1679 /* check for HTTP/0.9 request : no version information available.
1680 * msg->sol must point to the first of CR or LF.
1681 */
1682 if (unlikely(msg->sl.rq.v_l == 0))
1683 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1684
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1685 EXPECT_LF_HERE(ptr, http_msg_invalid);
1686 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1687 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1688
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1689 /*
1690 * Common states below
1691 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1692 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1693 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1694 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1695 if (likely(!HTTP_IS_CRLF(*ptr))) {
1696 goto http_msg_hdr_name;
1697 }
1698
1699 if (likely(*ptr == '\r'))
1700 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1701 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1702
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1703 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1704 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1705 /* assumes msg->sol points to the first char */
1706 if (likely(HTTP_IS_TOKEN(*ptr)))
1707 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1708
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1709 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1710 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]1711
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1712 if (likely(msg->err_pos < -1) || *ptr == '\n')
1713 goto http_msg_invalid;
1714
1715 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1716 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1717
1718 /* and we still accept this non-token character */
1719 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1720
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1721 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1722 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1723 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1724 if (likely(HTTP_IS_SPHT(*ptr)))
1725 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]1726
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1727 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1728 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1729
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1730 if (likely(!HTTP_IS_CRLF(*ptr))) {
1731 goto http_msg_hdr_val;
1732 }
1733
1734 if (likely(*ptr == '\r'))
1735 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1736 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1737
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1738 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1739 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1740 EXPECT_LF_HERE(ptr, http_msg_invalid);
1741 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]1742
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1743 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1744 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1745 if (likely(HTTP_IS_SPHT(*ptr))) {
1746 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1747 for (; buf->p + msg->sov < ptr; msg->sov++)
1748 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1749 goto http_msg_hdr_l1_sp;
1750 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1751 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1752 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1753 goto http_msg_complete_header;
1754
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1755 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1756 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1757 /* assumes msg->sol points to the first char, and msg->sov
1758 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1759 */
1760 if (likely(!HTTP_IS_CRLF(*ptr)))
1761 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1762
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1763 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1764 /* Note: we could also copy eol into ->eoh so that we have the
1765 * real header end in case it ends with lots of LWS, but is this
1766 * really needed ?
1767 */
1768 if (likely(*ptr == '\r'))
1769 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1770 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1771
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1772 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1773 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1774 EXPECT_LF_HERE(ptr, http_msg_invalid);
1775 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]1776
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1777 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1778 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1779 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1780 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1781 for (; buf->p + msg->eol < ptr; msg->eol++)
1782 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1783 goto http_msg_hdr_val;
1784 }
1785 http_msg_complete_header:
1786 /*
1787 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1788 * Assumes msg->sol points to the first char, msg->sov points
1789 * to the first character of the value and msg->eol to the
1790 * first CR or LF so we know how the line ends. We insert last
1791 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1792 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1793 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1794 idx, idx->tail) < 0))
1795 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1796
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1797 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1798 if (likely(!HTTP_IS_CRLF(*ptr))) {
1799 goto http_msg_hdr_name;
1800 }
1801
1802 if (likely(*ptr == '\r'))
1803 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1804 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1805
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1806 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1807 http_msg_last_lf:
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]1808 /* Assumes msg->sol points to the first of either CR or LF.
1809 * Sets ->sov and ->next to the total header length, ->eoh to
1810 * the last CRLF, and ->eol to the last CRLF length (1 or 2).
1811 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1812 EXPECT_LF_HERE(ptr, http_msg_invalid);
1813 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1814 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1815 msg->eoh = msg->sol;
1816 msg->sol = 0;
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]1817 msg->eol = msg->sov - msg->eoh;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1818 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1819 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1820
1821 case HTTP_MSG_ERROR:
1822 /* this may only happen if we call http_msg_analyser() twice with an error */
1823 break;
1824
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1825 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1826#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1827 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1828 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1829#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1830 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1831 }
1832 http_msg_ood:
1833 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1834 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1835 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1836 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1837
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1838 http_msg_invalid:
1839 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1840 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1841 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1842 return;
1843}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1844
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1845/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1846 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1847 * nothing is done and 1 is returned.
1848 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1849static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1850{
1851 int delta;
1852 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1853 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1854
1855 if (msg->sl.rq.v_l != 0)
1856 return 1;
1857
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]1858 /* RFC 1945 allows only GET for HTTP/0.9 requests */
1859 if (txn->meth != HTTP_METH_GET)
1860 return 0;
1861
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1862 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1863 delta = 0;
1864
1865 if (msg->sl.rq.u_l == 0) {
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]1866 /* HTTP/0.9 requests *must* have a request URI, per RFC 1945 */
1867 return 0;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1868 }
1869 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1870 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]1871 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1872 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1873 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1874 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1875 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1876 NULL, NULL);
1877 if (unlikely(!cur_end))
1878 return 0;
1879
1880 /* we have a full HTTP/1.0 request now and we know that
1881 * we have either a CR or an LF at <ptr>.
1882 */
1883 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1884 return 1;
1885}
1886
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1887/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1888 * and "keep-alive" values. If we already know that some headers may safely
1889 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1890 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1891 * - 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]1892 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1893 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1894 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1895 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1896 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1897 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1898void 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]1899{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1900 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1901 const char *hdr_val = "Connection";
1902 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1903
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1904 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1905 return;
1906
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1907 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1908 hdr_val = "Proxy-Connection";
1909 hdr_len = 16;
1910 }
1911
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1912 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1913 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1914 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]1915 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1916 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1917 if (to_del & 2)
1918 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1919 else
1920 txn->flags |= TX_CON_KAL_SET;
1921 }
1922 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1923 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1924 if (to_del & 1)
1925 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1926 else
1927 txn->flags |= TX_CON_CLO_SET;
1928 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1929 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
1930 txn->flags |= TX_HDR_CONN_UPG;
1931 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1932 }
1933
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1934 txn->flags |= TX_HDR_CONN_PRS;
1935 return;
1936}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1937
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1938/* Apply desired changes on the Connection: header. Values may be removed and/or
1939 * added depending on the <wanted> flags, which are exclusively composed of
1940 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1941 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1942 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1943void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1944{
1945 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1946 const char *hdr_val = "Connection";
1947 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1948
1949 ctx.idx = 0;
1950
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1951
1952 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1953 hdr_val = "Proxy-Connection";
1954 hdr_len = 16;
1955 }
1956
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1957 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1958 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]1959 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1960 if (wanted & TX_CON_KAL_SET)
1961 txn->flags |= TX_CON_KAL_SET;
1962 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1963 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1964 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1965 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1966 if (wanted & TX_CON_CLO_SET)
1967 txn->flags |= TX_CON_CLO_SET;
1968 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1969 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1970 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1971 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1972
1973 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1974 return;
1975
1976 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1977 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1978 hdr_val = "Connection: close";
1979 hdr_len = 17;
1980 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1981 hdr_val = "Proxy-Connection: close";
1982 hdr_len = 23;
1983 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1984 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1985 }
1986
1987 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1988 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1989 hdr_val = "Connection: keep-alive";
1990 hdr_len = 22;
1991 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1992 hdr_val = "Proxy-Connection: keep-alive";
1993 hdr_len = 28;
1994 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1995 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1996 }
1997 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1998}
1999
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2000/* Parse the chunk size at msg->next. Once done, it adjusts ->next to point to
2001 * the first byte of data after the chunk size, so that we know we can forward
2002 * exactly msg->next bytes. msg->sol contains the exact number of bytes forming
2003 * the chunk size. That way it is always possible to differentiate between the
2004 * start of the body and the start of the data.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2005 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2006 * Note: this function is designed to parse wrapped CRLF at the end of the buffer.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2007 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2008static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2009{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2010 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2011 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2012 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2013 const char *end = buf->data + buf->size;
2014 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2015 unsigned int chunk = 0;
2016
2017 /* The chunk size is in the following form, though we are only
2018 * interested in the size and CRLF :
2019 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
2020 */
2021 while (1) {
2022 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2023 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2024 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2025 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2026 if (c < 0) /* not a hex digit anymore */
2027 break;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2028 if (unlikely(++ptr >= end))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2029 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]2030 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2031 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2032 chunk = (chunk << 4) + c;
2033 }
2034
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2035 /* empty size not allowed */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2036 if (unlikely(ptr == ptr_old))
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2037 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2038
2039 while (http_is_spht[(unsigned char)*ptr]) {
2040 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2041 ptr = buf->data;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2042 if (unlikely(ptr == stop))
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2043 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2044 }
2045
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2046 /* Up to there, we know that at least one byte is present at *ptr. Check
2047 * for the end of chunk size.
2048 */
2049 while (1) {
2050 if (likely(HTTP_IS_CRLF(*ptr))) {
2051 /* we now have a CR or an LF at ptr */
2052 if (likely(*ptr == '\r')) {
2053 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2054 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2055 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2056 return 0;
2057 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2058
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2059 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2060 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2061 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2062 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2063 /* done */
2064 break;
2065 }
2066 else if (*ptr == ';') {
2067 /* chunk extension, ends at next CRLF */
2068 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2069 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2070 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2071 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2072
2073 while (!HTTP_IS_CRLF(*ptr)) {
2074 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2075 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2076 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2077 return 0;
2078 }
2079 /* we have a CRLF now, loop above */
2080 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2081 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2082 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2083 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2084 }
2085
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2086 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2087 * which may or may not be present. We save that into ->next,
2088 * and the number of bytes parsed into msg->sol.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2089 */
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2090 msg->sol = ptr - ptr_old;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2091 if (unlikely(ptr < ptr_old))
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2092 msg->sol += buf->size;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2093 msg->next = buffer_count(buf, buf->p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2094 msg->chunk_len = chunk;
2095 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2096 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2097 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2098 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2099 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2100 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2101}
2102
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2103/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2104 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2105 * the trailers is found, it is automatically scheduled to be forwarded,
2106 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
2107 * If not enough data are available, the function does not change anything
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2108 * except maybe msg->next if it could parse some lines, and returns zero.
2109 * If a parse error is encountered, the function returns < 0 and does not
2110 * change anything except maybe msg->next. Note that the message must
2111 * already be in HTTP_MSG_TRAILERS state before calling this function,
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2112 * which implies that all non-trailers data have already been scheduled for
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2113 * forwarding, and that msg->next exactly matches the length of trailers
2114 * already parsed and not forwarded. It is also important to note that this
2115 * function is designed to be able to parse wrapped headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2116 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2117static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2118{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2119 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2120
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2121 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2122 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2123 const char *p1 = NULL, *p2 = NULL;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2124 const char *ptr = b_ptr(buf, msg->next);
2125 const char *stop = bi_end(buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2126 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2127
2128 /* scan current line and stop at LF or CRLF */
2129 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2130 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2131 return 0;
2132
2133 if (*ptr == '\n') {
2134 if (!p1)
2135 p1 = ptr;
2136 p2 = ptr;
2137 break;
2138 }
2139
2140 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2141 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2142 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2143 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2144 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2145 p1 = ptr;
2146 }
2147
2148 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2149 if (ptr >= buf->data + buf->size)
2150 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2151 }
2152
2153 /* after LF; point to beginning of next line */
2154 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2155 if (p2 >= buf->data + buf->size)
2156 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2157
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2158 bytes = p2 - b_ptr(buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2159 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2160 bytes += buf->size;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2161
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2162 if (p1 == b_ptr(buf, msg->next)) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2163 /* LF/CRLF at beginning of line => end of trailers at p2.
2164 * Everything was scheduled for forwarding, there's nothing
2165 * left from this message.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]2166 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2167 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2168 msg->msg_state = HTTP_MSG_DONE;
2169 return 1;
2170 }
2171 /* OK, next line then */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2172 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2173 }
2174}
2175
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2176/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF
2177 * or a possible LF alone at the end of a chunk. It automatically adjusts
2178 * msg->next in order to include this part into the next forwarding phase.
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2179 * Note that the caller must ensure that ->p points to the first byte to parse.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2180 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
2181 * not enough data are available, the function does not change anything and
2182 * returns zero. If a parse error is encountered, the function returns < 0 and
2183 * does not change anything. Note: this function is designed to parse wrapped
2184 * CRLF at the end of the buffer.
2185 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2186static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2187{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2188 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2189 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2190 int bytes;
2191
2192 /* NB: we'll check data availabilty at the end. It's not a
2193 * problem because whatever we match first will be checked
2194 * against the correct length.
2195 */
2196 bytes = 1;
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2197 ptr = b_ptr(buf, msg->next);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2198 if (*ptr == '\r') {
2199 bytes++;
2200 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2201 if (ptr >= buf->data + buf->size)
2202 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2203 }
2204
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2205 if (msg->next + bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2206 return 0;
2207
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2208 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2209 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2210 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2211 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2212
2213 ptr++;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2214 if (unlikely(ptr >= buf->data + buf->size))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2215 ptr = buf->data;
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2216 /* Advance ->next to allow the CRLF to be forwarded */
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2217 msg->next += bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2218 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
2219 return 1;
2220}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2221
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2222/* Parses a qvalue and returns it multipled by 1000, from 0 to 1000. If the
2223 * value is larger than 1000, it is bound to 1000. The parser consumes up to
2224 * 1 digit, one dot and 3 digits and stops on the first invalid character.
2225 * Unparsable qvalues return 1000 as "q=1.000".
2226 */
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2227int parse_qvalue(const char *qvalue, const char **end)
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2228{
2229 int q = 1000;
2230
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2231 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2232 goto out;
2233 q = (*qvalue++ - '0') * 1000;
2234
2235 if (*qvalue++ != '.')
2236 goto out;
2237
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2238 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2239 goto out;
2240 q += (*qvalue++ - '0') * 100;
2241
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2242 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2243 goto out;
2244 q += (*qvalue++ - '0') * 10;
2245
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2246 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2247 goto out;
2248 q += (*qvalue++ - '0') * 1;
2249 out:
2250 if (q > 1000)
2251 q = 1000;
Willy Tarreau38b3aa52014-04-22 23:32:05 +0200[diff] [blame]2252 if (end)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2253 *end = qvalue;
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2254 return q;
2255}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2256
2257/*
2258 * Selects a compression algorithm depending on the client request.
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2259 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2260int select_compression_request_header(struct stream *s, struct buffer *req)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2261{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]2262 struct http_txn *txn = s->txn;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2263 struct http_msg *msg = &txn->req;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2264 struct hdr_ctx ctx;
2265 struct comp_algo *comp_algo = NULL;
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2266 struct comp_algo *comp_algo_back = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2267
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]2268 /* Disable compression for older user agents announcing themselves as "Mozilla/4"
2269 * unless they are known good (MSIE 6 with XP SP2, or MSIE 7 and later).
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2270 * See http://zoompf.com/2012/02/lose-the-wait-http-compression for more details.
2271 */
2272 ctx.idx = 0;
2273 if (http_find_header2("User-Agent", 10, req->p, &txn->hdr_idx, &ctx) &&
2274 ctx.vlen >= 9 &&
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]2275 memcmp(ctx.line + ctx.val, "Mozilla/4", 9) == 0 &&
2276 (ctx.vlen < 31 ||
2277 memcmp(ctx.line + ctx.val + 25, "MSIE ", 5) != 0 ||
2278 ctx.line[ctx.val + 30] < '6' ||
2279 (ctx.line[ctx.val + 30] == '6' &&
2280 (ctx.vlen < 54 || memcmp(ctx.line + 51, "SV1", 3) != 0)))) {
2281 s->comp_algo = NULL;
2282 return 0;
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2283 }
2284
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2285 /* search for the algo in the backend in priority or the frontend */
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]2286 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (strm_fe(s)->comp && (comp_algo_back = strm_fe(s)->comp->algos))) {
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2287 int best_q = 0;
2288
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2289 ctx.idx = 0;
2290 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2291 const char *qval;
2292 int q;
2293 int toklen;
2294
2295 /* try to isolate the token from the optional q-value */
2296 toklen = 0;
2297 while (toklen < ctx.vlen && http_is_token[(unsigned char)*(ctx.line + ctx.val + toklen)])
2298 toklen++;
2299
2300 qval = ctx.line + ctx.val + toklen;
2301 while (1) {
2302 while (qval < ctx.line + ctx.val + ctx.vlen && http_is_lws[(unsigned char)*qval])
2303 qval++;
2304
2305 if (qval >= ctx.line + ctx.val + ctx.vlen || *qval != ';') {
2306 qval = NULL;
2307 break;
2308 }
2309 qval++;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2310
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2311 while (qval < ctx.line + ctx.val + ctx.vlen && http_is_lws[(unsigned char)*qval])
2312 qval++;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2313
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2314 if (qval >= ctx.line + ctx.val + ctx.vlen) {
2315 qval = NULL;
2316 break;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2317 }
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2318 if (strncmp(qval, "q=", MIN(ctx.line + ctx.val + ctx.vlen - qval, 2)) == 0)
2319 break;
2320
2321 while (qval < ctx.line + ctx.val + ctx.vlen && *qval != ';')
2322 qval++;
2323 }
2324
2325 /* here we have qval pointing to the first "q=" attribute or NULL if not found */
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2326 q = qval ? parse_qvalue(qval + 2, NULL) : 1000;
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2327
2328 if (q <= best_q)
2329 continue;
2330
2331 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
2332 if (*(ctx.line + ctx.val) == '*' ||
Willy Tarreau615105e2015-03-28 16:40:46 +0100[diff] [blame]2333 word_match(ctx.line + ctx.val, toklen, comp_algo->ua_name, comp_algo->ua_name_len)) {
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2334 s->comp_algo = comp_algo;
2335 best_q = q;
2336 break;
2337 }
2338 }
2339 }
2340 }
2341
2342 /* remove all occurrences of the header when "compression offload" is set */
2343 if (s->comp_algo) {
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]2344 if ((s->be->comp && s->be->comp->offload) || (strm_fe(s)->comp && strm_fe(s)->comp->offload)) {
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2345 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2346 ctx.idx = 0;
2347 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
2348 http_remove_header2(msg, &txn->hdr_idx, &ctx);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2349 }
2350 }
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2351 return 1;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2352 }
2353
2354 /* identity is implicit does not require headers */
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]2355 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (strm_fe(s)->comp && (comp_algo_back = strm_fe(s)->comp->algos))) {
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2356 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
Willy Tarreau615105e2015-03-28 16:40:46 +0100[diff] [blame]2357 if (comp_algo->cfg_name_len == 8 && memcmp(comp_algo->cfg_name, "identity", 8) == 0) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2358 s->comp_algo = comp_algo;
2359 return 1;
2360 }
2361 }
2362 }
2363
2364 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2365 return 0;
2366}
2367
2368/*
2369 * Selects a comression algorithm depending of the server response.
2370 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2371int select_compression_response_header(struct stream *s, struct buffer *res)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2372{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]2373 struct http_txn *txn = s->txn;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2374 struct http_msg *msg = &txn->rsp;
2375 struct hdr_ctx ctx;
2376 struct comp_type *comp_type;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2377
2378 /* no common compression algorithm was found in request header */
2379 if (s->comp_algo == NULL)
2380 goto fail;
2381
2382 /* HTTP < 1.1 should not be compressed */
Willy Tarreau72575502013-12-24 14:41:35 +0100[diff] [blame]2383 if (!(msg->flags & HTTP_MSGF_VER_11) || !(txn->req.flags & HTTP_MSGF_VER_11))
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2384 goto fail;
2385
Jesse Hathaway2468d4e2015-03-06 20:16:15 +0000[diff] [blame]2386 /* compress 200,201,202,203 responses only */
2387 if ((txn->status != 200) &&
2388 (txn->status != 201) &&
2389 (txn->status != 202) &&
2390 (txn->status != 203))
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2391 goto fail;
2392
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2393 /* Content-Length is null */
2394 if (!(msg->flags & HTTP_MSGF_TE_CHNK) && msg->body_len == 0)
2395 goto fail;
2396
2397 /* content is already compressed */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2398 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2399 if (http_find_header2("Content-Encoding", 16, res->p, &txn->hdr_idx, &ctx))
2400 goto fail;
2401
Willy Tarreau56e9ffa2013-01-05 16:20:35 +0100[diff] [blame]2402 /* no compression when Cache-Control: no-transform is present in the message */
2403 ctx.idx = 0;
2404 while (http_find_header2("Cache-Control", 13, res->p, &txn->hdr_idx, &ctx)) {
2405 if (word_match(ctx.line + ctx.val, ctx.vlen, "no-transform", 12))
2406 goto fail;
2407 }
2408
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2409 comp_type = NULL;
2410
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2411 /* we don't want to compress multipart content-types, nor content-types that are
2412 * not listed in the "compression type" directive if any. If no content-type was
2413 * found but configuration requires one, we don't compress either. Backend has
2414 * the priority.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2415 */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2416 ctx.idx = 0;
2417 if (http_find_header2("Content-Type", 12, res->p, &txn->hdr_idx, &ctx)) {
2418 if (ctx.vlen >= 9 && strncasecmp("multipart", ctx.line+ctx.val, 9) == 0)
2419 goto fail;
2420
2421 if ((s->be->comp && (comp_type = s->be->comp->types)) ||
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]2422 (strm_fe(s)->comp && (comp_type = strm_fe(s)->comp->types))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2423 for (; comp_type; comp_type = comp_type->next) {
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2424 if (ctx.vlen >= comp_type->name_len &&
2425 strncasecmp(ctx.line+ctx.val, comp_type->name, comp_type->name_len) == 0)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2426 /* this Content-Type should be compressed */
2427 break;
2428 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2429 /* this Content-Type should not be compressed */
2430 if (comp_type == NULL)
2431 goto fail;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2432 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2433 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2434 else { /* no content-type header */
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]2435 if ((s->be->comp && s->be->comp->types) || (strm_fe(s)->comp && strm_fe(s)->comp->types))
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2436 goto fail; /* a content-type was required */
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2437 }
2438
William Lallemandd85f9172012-11-09 17:05:39 +0100[diff] [blame]2439 /* limit compression rate */
2440 if (global.comp_rate_lim > 0)
2441 if (read_freq_ctr(&global.comp_bps_in) > global.comp_rate_lim)
2442 goto fail;
2443
William Lallemand072a2bf2012-11-20 17:01:01 +0100[diff] [blame]2444 /* limit cpu usage */
2445 if (idle_pct < compress_min_idle)
2446 goto fail;
2447
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2448 /* initialize compression */
William Lallemandf3747832012-11-09 12:33:10 +0100[diff] [blame]2449 if (s->comp_algo->init(&s->comp_ctx, global.tune.comp_maxlevel) < 0)
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2450 goto fail;
2451
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2452 s->flags |= SF_COMP_READY;
William Lallemandec3e3892012-11-12 17:02:18 +0100[diff] [blame]2453
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2454 /* remove Content-Length header */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2455 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2456 if ((msg->flags & HTTP_MSGF_CNT_LEN) && http_find_header2("Content-Length", 14, res->p, &txn->hdr_idx, &ctx))
2457 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2458
2459 /* add Transfer-Encoding header */
2460 if (!(msg->flags & HTTP_MSGF_TE_CHNK))
2461 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, "Transfer-Encoding: chunked", 26);
2462
2463 /*
2464 * Add Content-Encoding header when it's not identity encoding.
2465 * RFC 2616 : Identity encoding: This content-coding is used only in the
2466 * Accept-Encoding header, and SHOULD NOT be used in the Content-Encoding
2467 * header.
2468 */
Willy Tarreau615105e2015-03-28 16:40:46 +0100[diff] [blame]2469 if (s->comp_algo->cfg_name_len != 8 || memcmp(s->comp_algo->cfg_name, "identity", 8) != 0) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]2470 trash.len = 18;
2471 memcpy(trash.str, "Content-Encoding: ", trash.len);
Willy Tarreau615105e2015-03-28 16:40:46 +0100[diff] [blame]2472 memcpy(trash.str + trash.len, s->comp_algo->ua_name, s->comp_algo->ua_name_len);
2473 trash.len += s->comp_algo->ua_name_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]2474 trash.str[trash.len] = '\0';
2475 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2476 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2477 return 1;
2478
2479fail:
Willy Tarreaub97b6192012-11-19 14:55:02 +0100[diff] [blame]2480 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2481 return 0;
2482}
2483
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2484void 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]2485{
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]2486 struct proxy *fe = strm_fe(s);
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2487 int tmp = TX_CON_WANT_KAL;
2488
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2489 if (!((fe->options2|s->be->options2) & PR_O2_FAKE_KA)) {
2490 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2491 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN)
2492 tmp = TX_CON_WANT_TUN;
2493
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2494 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2495 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2496 tmp = TX_CON_WANT_TUN;
2497 }
2498
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2499 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2500 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL) {
2501 /* option httpclose + server_close => forceclose */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2502 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2503 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2504 tmp = TX_CON_WANT_CLO;
2505 else
2506 tmp = TX_CON_WANT_SCL;
2507 }
2508
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2509 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2510 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL)
2511 tmp = TX_CON_WANT_CLO;
2512
2513 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
2514 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
2515
2516 if (!(txn->flags & TX_HDR_CONN_PRS) &&
2517 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) {
2518 /* parse the Connection header and possibly clean it */
2519 int to_del = 0;
2520 if ((msg->flags & HTTP_MSGF_VER_11) ||
2521 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2522 !((fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2523 to_del |= 2; /* remove "keep-alive" */
2524 if (!(msg->flags & HTTP_MSGF_VER_11))
2525 to_del |= 1; /* remove "close" */
2526 http_parse_connection_header(txn, msg, to_del);
2527 }
2528
2529 /* check if client or config asks for explicit close in KAL/SCL */
2530 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
2531 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
2532 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
2533 (!(msg->flags & HTTP_MSGF_VER_11) && !(txn->flags & TX_HDR_CONN_KAL)) || /* no "connection: k-a" in 1.0 */
2534 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2535 fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2536 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
2537}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2538
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2539/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2540 * processing can continue on next analysers, or zero if it either needs more
2541 * data or wants to immediately abort the request (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2542 * 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]2543 * when it has nothing left to do, and may remove any analyser when it wants to
2544 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2545 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2546int http_wait_for_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2547{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2548 /*
2549 * We will parse the partial (or complete) lines.
2550 * We will check the request syntax, and also join multi-line
2551 * headers. An index of all the lines will be elaborated while
2552 * parsing.
2553 *
2554 * For the parsing, we use a 28 states FSM.
2555 *
2556 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2557 * req->buf->p = beginning of request
2558 * req->buf->p + msg->eoh = end of processed headers / start of current one
2559 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2560 * msg->eol = end of current header or line (LF or CRLF)
2561 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2562 *
2563 * 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]2564 * we will set a few fields (txn->meth, sn->flags/SF_REDIRECTABLE).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2565 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2566 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2567 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2568
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2569 int cur_idx;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2570 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]2571 struct http_txn *txn = s->txn;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2572 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2573 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2574
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2575 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]2576 now_ms, __FUNCTION__,
2577 s,
2578 req,
2579 req->rex, req->wex,
2580 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2581 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2582 req->analysers);
2583
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2584 /* we're speaking HTTP here, so let's speak HTTP to the client */
2585 s->srv_error = http_return_srv_error;
2586
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2587 /* There's a protected area at the end of the buffer for rewriting
2588 * purposes. We don't want to start to parse the request if the
2589 * protected area is affected, because we may have to move processed
2590 * data later, which is much more complicated.
2591 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2592 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2593 if (txn->flags & TX_NOT_FIRST) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]2594 if (unlikely(!channel_is_rewritable(req))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2595 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2596 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2597 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2598 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2599 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]2600 req->flags |= CF_WAKE_WRITE;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2601 return 0;
2602 }
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2603 if (unlikely(bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2604 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite))
2605 buffer_slow_realign(req->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2606 }
2607
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2608 /* Note that we have the same problem with the response ; we
2609 * may want to send a redirect, error or anything which requires
2610 * some spare space. So we'll ensure that we have at least
2611 * maxrewrite bytes available in the response buffer before
2612 * processing that one. This will only affect pipelined
2613 * keep-alive requests.
2614 */
2615 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2616 unlikely(!channel_is_rewritable(&s->res) ||
2617 bi_end(s->res.buf) < b_ptr(s->res.buf, txn->rsp.next) ||
2618 bi_end(s->res.buf) > s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)) {
2619 if (s->res.buf->o) {
2620 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]2621 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2622 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2623 channel_dont_connect(req);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2624 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
2625 s->res.flags |= CF_WAKE_WRITE;
2626 s->res.analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2627 return 0;
2628 }
2629 }
2630
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2631 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2632 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2633 }
2634
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2635 /* 1: we might have to print this header in debug mode */
2636 if (unlikely((global.mode & MODE_DEBUG) &&
2637 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]2638 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2639 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2640
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2641 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2642 /* this is a bit complex : in case of error on the request line,
2643 * we know that rq.l is still zero, so we display only the part
2644 * up to the end of the line (truncated by debug_hdr).
2645 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2646 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2647 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2648
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2649 sol += hdr_idx_first_pos(&txn->hdr_idx);
2650 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2651
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2652 while (cur_idx) {
2653 eol = sol + txn->hdr_idx.v[cur_idx].len;
2654 debug_hdr("clihdr", s, sol, eol);
2655 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2656 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2657 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2658 }
2659
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2660
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2661 /*
2662 * Now we quickly check if we have found a full valid request.
2663 * If not so, we check the FD and buffer states before leaving.
2664 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2665 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2666 * requests are checked first. When waiting for a second request
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2667 * on a keep-alive stream, if we encounter and error, close, t/o,
2668 * we note the error in the stream flags but don't set any state.
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2669 * Since the error will be noted there, it will not be counted by
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2670 * process_stream() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2671 * Last, we may increase some tracked counters' http request errors on
2672 * the cases that are deliberately the client's fault. For instance,
2673 * a timeout or connection reset is not counted as an error. However
2674 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2675 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2676
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2677 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2678 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2679 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2680 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2681 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2682 stream_inc_http_req_ctr(s);
2683 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2684 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2685 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2686 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2687
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2688 /* 1: Since we are in header mode, if there's no space
2689 * left for headers, we won't be able to free more
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2690 * later, so the stream will never terminate. We
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2691 * must terminate it now.
2692 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2693 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2694 /* FIXME: check if URI is set and return Status
2695 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2696 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2697 stream_inc_http_req_ctr(s);
2698 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2699 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2700 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2701 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2702 goto return_bad_req;
2703 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2704
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2705 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2706 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2707 if (!(s->flags & SF_ERR_MASK))
2708 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2709
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2710 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2711 goto failed_keep_alive;
2712
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2713 if (sess->fe->options & PR_O_IGNORE_PRB)
2714 goto failed_keep_alive;
2715
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2716 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2717 if (msg->err_pos >= 0) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2718 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]2719 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2720 }
2721
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2722 txn->status = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]2723 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2724 msg->msg_state = HTTP_MSG_ERROR;
2725 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2726
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2727 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2728 proxy_inc_fe_req_ctr(sess->fe);
2729 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2730 if (sess->listener->counters)
2731 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2732
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2733 if (!(s->flags & SF_FINST_MASK))
2734 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2735 return 0;
2736 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2737
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2738 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2739 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]2740 if (!(s->flags & SF_ERR_MASK))
2741 s->flags |= SF_ERR_CLITO;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2742
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2743 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2744 goto failed_keep_alive;
2745
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2746 if (sess->fe->options & PR_O_IGNORE_PRB)
2747 goto failed_keep_alive;
2748
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2749 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2750 if (msg->err_pos >= 0) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2751 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]2752 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2753 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2754 txn->status = 408;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]2755 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2756 msg->msg_state = HTTP_MSG_ERROR;
2757 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2758
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2759 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2760 proxy_inc_fe_req_ctr(sess->fe);
2761 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2762 if (sess->listener->counters)
2763 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2764
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2765 if (!(s->flags & SF_FINST_MASK))
2766 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2767 return 0;
2768 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2769
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2770 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2771 else if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2772 if (!(s->flags & SF_ERR_MASK))
2773 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2774
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2775 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2776 goto failed_keep_alive;
2777
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2778 if (sess->fe->options & PR_O_IGNORE_PRB)
2779 goto failed_keep_alive;
2780
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2781 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2782 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]2783 txn->status = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]2784 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2785 msg->msg_state = HTTP_MSG_ERROR;
2786 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2787
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2788 stream_inc_http_err_ctr(s);
2789 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2790 proxy_inc_fe_req_ctr(sess->fe);
2791 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2792 if (sess->listener->counters)
2793 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2794
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2795 if (!(s->flags & SF_FINST_MASK))
2796 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2797 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2798 }
2799
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2800 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2801 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2802 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2803#ifdef TCP_QUICKACK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2804 if (sess->listener->options & LI_O_NOQUICKACK && req->buf->i &&
2805 objt_conn(sess->origin) && conn_ctrl_ready(__objt_conn(sess->origin))) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2806 /* We need more data, we have to re-enable quick-ack in case we
2807 * previously disabled it, otherwise we might cause the client
2808 * to delay next data.
2809 */
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2810 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]2811 }
2812#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2813
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2814 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2815 /* If the client starts to talk, let's fall back to
2816 * request timeout processing.
2817 */
2818 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2819 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2820 }
2821
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2822 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2823 if (!tick_isset(req->analyse_exp)) {
2824 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2825 (txn->flags & TX_WAIT_NEXT_RQ) &&
2826 tick_isset(s->be->timeout.httpka))
2827 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2828 else
2829 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2830 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2831
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2832 /* we're not ready yet */
2833 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2834
2835 failed_keep_alive:
2836 /* Here we process low-level errors for keep-alive requests. In
2837 * short, if the request is not the first one and it experiences
2838 * a timeout, read error or shutdown, we just silently close so
2839 * that the client can try again.
2840 */
2841 txn->status = 0;
2842 msg->msg_state = HTTP_MSG_RQBEFORE;
2843 req->analysers = 0;
2844 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]2845 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2846 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]2847 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2848 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2849 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2850
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2851 /* OK now we have a complete HTTP request with indexed headers. Let's
2852 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2853 * 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]2854 * 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]2855 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2856 * byte after the last LF. msg->sov points to the first byte of data.
2857 * msg->eol cannot be trusted because it may have been left uninitialized
2858 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2859 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2860
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2861 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2862 proxy_inc_fe_req_ctr(sess->fe); /* one more valid request for this FE */
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2863
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2864 if (txn->flags & TX_WAIT_NEXT_RQ) {
2865 /* kill the pending keep-alive timeout */
2866 txn->flags &= ~TX_WAIT_NEXT_RQ;
2867 req->analyse_exp = TICK_ETERNITY;
2868 }
2869
2870
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2871 /* Maybe we found in invalid header name while we were configured not
2872 * to block on that, so we have to capture it now.
2873 */
2874 if (unlikely(msg->err_pos >= 0))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2875 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]2876
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2877 /*
2878 * 1: identify the method
2879 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2880 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2881
2882 /* we can make use of server redirect on GET and HEAD */
2883 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2884 s->flags |= SF_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2885
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2886 /*
2887 * 2: check if the URI matches the monitor_uri.
2888 * We have to do this for every request which gets in, because
2889 * the monitor-uri is defined by the frontend.
2890 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2891 if (unlikely((sess->fe->monitor_uri_len != 0) &&
2892 (sess->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2893 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2894 sess->fe->monitor_uri,
2895 sess->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2896 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2897 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2898 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2899 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2900
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2901 s->flags |= SF_MONITOR;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2902 sess->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2903
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2904 /* Check if we want to fail this monitor request or not */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2905 list_for_each_entry(cond, &sess->fe->mon_fail_cond, list) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]2906 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]2907
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2908 ret = acl_pass(ret);
2909 if (cond->pol == ACL_COND_UNLESS)
2910 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2911
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2912 if (ret) {
2913 /* we fail this request, let's return 503 service unavail */
2914 txn->status = 503;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]2915 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_503));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2916 if (!(s->flags & SF_ERR_MASK))
2917 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2918 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2919 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2920 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2921
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2922 /* nothing to fail, let's reply normaly */
2923 txn->status = 200;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]2924 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_200));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2925 if (!(s->flags & SF_ERR_MASK))
2926 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2927 goto return_prx_cond;
2928 }
2929
2930 /*
2931 * 3: Maybe we have to copy the original REQURI for the logs ?
2932 * Note: we cannot log anymore if the request has been
2933 * classified as invalid.
2934 */
2935 if (unlikely(s->logs.logwait & LW_REQ)) {
2936 /* we have a complete HTTP request that we must log */
2937 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2938 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2939
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2940 if (urilen >= REQURI_LEN)
2941 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2942 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2943 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2944
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2945 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2946 s->do_log(s);
2947 } else {
2948 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2949 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2950 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2951
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]2952 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
2953 * exactly one digit "." one digit. This check may be disabled using
2954 * option accept-invalid-http-request.
2955 */
2956 if (!(sess->fe->options2 & PR_O2_REQBUG_OK)) {
2957 if (msg->sl.rq.v_l != 8) {
2958 msg->err_pos = msg->sl.rq.v;
2959 goto return_bad_req;
2960 }
2961
2962 if (req->buf->p[msg->sl.rq.v + 4] != '/' ||
2963 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 5]) ||
2964 req->buf->p[msg->sl.rq.v + 6] != '.' ||
2965 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 7])) {
2966 msg->err_pos = msg->sl.rq.v + 4;
2967 goto return_bad_req;
2968 }
2969 }
Willy Tarreau13317662015-05-01 13:47:08 +0200[diff] [blame]2970 else {
2971 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
2972 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
2973 goto return_bad_req;
2974 }
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]2975
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2976 /* ... and check if the request is HTTP/1.1 or above */
2977 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2978 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2979 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2980 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2981 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2982
2983 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2984 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]2985
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2986 /* if the frontend has "option http-use-proxy-header", we'll check if
2987 * we have what looks like a proxied connection instead of a connection,
2988 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2989 * Note that this is *not* RFC-compliant, however browsers and proxies
2990 * happen to do that despite being non-standard :-(
2991 * We consider that a request not beginning with either '/' or '*' is
2992 * a proxied connection, which covers both "scheme://location" and
2993 * CONNECT ip:port.
2994 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2995 if ((sess->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2996 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2997 txn->flags |= TX_USE_PX_CONN;
2998
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2999 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3000 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3001
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3002 /* 5: we may need to capture headers */
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]3003 if (unlikely((s->logs.logwait & LW_REQHDR) && s->req_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3004 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]3005 s->req_cap, sess->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3006
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3007 /* 6: determine the transfer-length according to RFC2616 #4.4, updated
3008 * by RFC7230#3.3.3 :
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3009 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3010 * The length of a message body is determined by one of the following
3011 * (in order of precedence):
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3012 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3013 * 1. Any response to a HEAD request and any response with a 1xx
3014 * (Informational), 204 (No Content), or 304 (Not Modified) status
3015 * code is always terminated by the first empty line after the
3016 * header fields, regardless of the header fields present in the
3017 * message, and thus cannot contain a message body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3018 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3019 * 2. Any 2xx (Successful) response to a CONNECT request implies that
3020 * the connection will become a tunnel immediately after the empty
3021 * line that concludes the header fields. A client MUST ignore any
3022 * Content-Length or Transfer-Encoding header fields received in
3023 * such a message.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3024 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3025 * 3. If a Transfer-Encoding header field is present and the chunked
3026 * transfer coding (Section 4.1) is the final encoding, the message
3027 * body length is determined by reading and decoding the chunked
3028 * data until the transfer coding indicates the data is complete.
3029 *
3030 * If a Transfer-Encoding header field is present in a response and
3031 * the chunked transfer coding is not the final encoding, the
3032 * message body length is determined by reading the connection until
3033 * it is closed by the server. If a Transfer-Encoding header field
3034 * is present in a request and the chunked transfer coding is not
3035 * the final encoding, the message body length cannot be determined
3036 * reliably; the server MUST respond with the 400 (Bad Request)
3037 * status code and then close the connection.
3038 *
3039 * If a message is received with both a Transfer-Encoding and a
3040 * Content-Length header field, the Transfer-Encoding overrides the
3041 * Content-Length. Such a message might indicate an attempt to
3042 * perform request smuggling (Section 9.5) or response splitting
3043 * (Section 9.4) and ought to be handled as an error. A sender MUST
3044 * remove the received Content-Length field prior to forwarding such
3045 * a message downstream.
3046 *
3047 * 4. If a message is received without Transfer-Encoding and with
3048 * either multiple Content-Length header fields having differing
3049 * field-values or a single Content-Length header field having an
3050 * invalid value, then the message framing is invalid and the
3051 * recipient MUST treat it as an unrecoverable error. If this is a
3052 * request message, the server MUST respond with a 400 (Bad Request)
3053 * status code and then close the connection. If this is a response
3054 * message received by a proxy, the proxy MUST close the connection
3055 * to the server, discard the received response, and send a 502 (Bad
3056 * Gateway) response to the client. If this is a response message
3057 * received by a user agent, the user agent MUST close the
3058 * connection to the server and discard the received response.
3059 *
3060 * 5. If a valid Content-Length header field is present without
3061 * Transfer-Encoding, its decimal value defines the expected message
3062 * body length in octets. If the sender closes the connection or
3063 * the recipient times out before the indicated number of octets are
3064 * received, the recipient MUST consider the message to be
3065 * incomplete and close the connection.
3066 *
3067 * 6. If this is a request message and none of the above are true, then
3068 * the message body length is zero (no message body is present).
3069 *
3070 * 7. Otherwise, this is a response message without a declared message
3071 * body length, so the message body length is determined by the
3072 * number of octets received prior to the server closing the
3073 * connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3074 */
3075
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3076 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3077 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]3078 while (http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3079 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3080 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
3081 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]3082 /* chunked not last, return badreq */
3083 goto return_bad_req;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3084 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3085 }
3086
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]3087 /* Chunked requests must have their content-length removed */
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3088 ctx.idx = 0;
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]3089 if (msg->flags & HTTP_MSGF_TE_CHNK) {
3090 while (http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx))
3091 http_remove_header2(msg, &txn->hdr_idx, &ctx);
3092 }
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]3093 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]3094 signed long long cl;
3095
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3096 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3097 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3098 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3099 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3100
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3101 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3102 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3103 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3104 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3105
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3106 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3107 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3108 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3109 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3110
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3111 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3112 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3113 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3114 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3115
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3116 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3117 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3118 }
3119
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]3120 /* even bodyless requests have a known length */
3121 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3122
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]3123 /* Until set to anything else, the connection mode is set as Keep-Alive. It will
3124 * only change if both the request and the config reference something else.
3125 * Option httpclose by itself sets tunnel mode where headers are mangled.
3126 * However, if another mode is set, it will affect it (eg: server-close/
3127 * keep-alive + httpclose = close). Note that we avoid to redo the same work
3128 * if FE and BE have the same settings (common). The method consists in
3129 * checking if options changed between the two calls (implying that either
3130 * one is non-null, or one of them is non-null and we are there for the first
3131 * time.
3132 */
3133 if (!(txn->flags & TX_HDR_CONN_PRS) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3134 ((sess->fe->options & PR_O_HTTP_MODE) != (s->be->options & PR_O_HTTP_MODE)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]3135 http_adjust_conn_mode(s, txn, msg);
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]3136
Willy Tarreau9fbe18e2015-05-01 22:42:08 +0200[diff] [blame]3137 /* we may have to wait for the request's body */
3138 if ((s->be->options & PR_O_WREQ_BODY) &&
3139 (msg->body_len || (msg->flags & HTTP_MSGF_TE_CHNK)))
3140 req->analysers |= AN_REQ_HTTP_BODY;
3141
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3142 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3143 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3144 req->analyse_exp = TICK_ETERNITY;
3145 return 1;
3146
3147 return_bad_req:
3148 /* We centralize bad requests processing here */
3149 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3150 /* we detected a parsing error. We want to archive this request
3151 * in the dedicated proxy area for later troubleshooting.
3152 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3153 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]3154 }
3155
3156 txn->req.msg_state = HTTP_MSG_ERROR;
3157 txn->status = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]3158 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3159
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3160 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]3161 if (sess->listener->counters)
3162 sess->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3163
3164 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]3165 if (!(s->flags & SF_ERR_MASK))
3166 s->flags |= SF_ERR_PRXCOND;
3167 if (!(s->flags & SF_FINST_MASK))
3168 s->flags |= SF_FINST_R;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3169
3170 req->analysers = 0;
3171 req->analyse_exp = TICK_ETERNITY;
3172 return 0;
3173}
3174
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]3175
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3176/* This function prepares an applet to handle the stats. It can deal with the
3177 * "100-continue" expectation, check that admin rules are met for POST requests,
3178 * and program a response message if something was unexpected. It cannot fail
3179 * 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]3180 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3181 * s->target which is supposed to already point to the stats applet. The caller
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3182 * is expected to have already assigned an appctx to the stream.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3183 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3184int http_handle_stats(struct stream *s, struct channel *req)
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3185{
3186 struct stats_admin_rule *stats_admin_rule;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]3187 struct stream_interface *si = &s->si[1];
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3188 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3189 struct http_txn *txn = s->txn;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3190 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3191 struct uri_auth *uri_auth = s->be->uri_auth;
3192 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3193 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3194
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3195 appctx = si_appctx(si);
3196 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
3197 appctx->st1 = appctx->st2 = 0;
3198 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
3199 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3200 if ((msg->flags & HTTP_MSGF_VER_11) && (s->txn->meth != HTTP_METH_HEAD))
Willy Tarreauaf3cf702014-04-22 22:19:53 +0200[diff] [blame]3201 appctx->ctx.stats.flags |= STAT_CHUNKED;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3202
3203 uri = msg->chn->buf->p + msg->sl.rq.u;
3204 lookup = uri + uri_auth->uri_len;
3205
3206 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
3207 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3208 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3209 break;
3210 }
3211 }
3212
3213 if (uri_auth->refresh) {
3214 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
3215 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3216 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3217 break;
3218 }
3219 }
3220 }
3221
3222 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
3223 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3224 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3225 break;
3226 }
3227 }
3228
3229 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3230 if (memcmp(h, ";st=", 4) == 0) {
3231 int i;
3232 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3233 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3234 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
3235 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3236 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3237 break;
3238 }
3239 }
3240 break;
3241 }
3242 }
3243
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3244 appctx->ctx.stats.scope_str = 0;
3245 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3246 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3247 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
3248 int itx = 0;
3249 const char *h2;
3250 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
3251 const char *err;
3252
3253 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
3254 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3255 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3256 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
3257 itx++;
3258 h++;
3259 }
3260
3261 if (itx > STAT_SCOPE_TXT_MAXLEN)
3262 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3263 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3264
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3265 /* 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]3266 memcpy(scope_txt, h2, itx);
3267 scope_txt[itx] = '\0';
3268 err = invalid_char(scope_txt);
3269 if (err) {
3270 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3271 appctx->ctx.stats.scope_str = 0;
3272 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3273 }
3274 break;
3275 }
3276 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3277
3278 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3279 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3280 int ret = 1;
3281
3282 if (stats_admin_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3283 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]3284 ret = acl_pass(ret);
3285 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3286 ret = !ret;
3287 }
3288
3289 if (ret) {
3290 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3291 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3292 break;
3293 }
3294 }
3295
3296 /* Was the status page requested with a POST ? */
Willy Tarreaub8cdf522015-05-29 01:09:15 +0200[diff] [blame]3297 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3298 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreaucfe7fdd2014-04-26 22:08:32 +0200[diff] [blame]3299 /* we'll need the request body, possibly after sending 100-continue */
Willy Tarreaub8cdf522015-05-29 01:09:15 +0200[diff] [blame]3300 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE)
3301 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3302 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3303 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3304 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3305 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
3306 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]3307 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3308 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3309 else {
3310 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3311 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3312 }
3313
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3314 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3315 return 1;
3316}
3317
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3318/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
3319 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
3320 */
Thierry FOURNIER7fe75e02015-03-16 12:03:44 +0100[diff] [blame]3321void inet_set_tos(int fd, struct sockaddr_storage from, int tos)
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3322{
3323#ifdef IP_TOS
3324 if (from.ss_family == AF_INET)
3325 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3326#endif
3327#ifdef IPV6_TCLASS
3328 if (from.ss_family == AF_INET6) {
3329 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)&from)->sin6_addr))
3330 /* v4-mapped addresses need IP_TOS */
3331 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3332 else
3333 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
3334 }
3335#endif
3336}
3337
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3338int http_transform_header_str(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3339 const char* name, unsigned int name_len,
3340 const char *str, struct my_regex *re,
3341 int action)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3342{
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3343 struct hdr_ctx ctx;
3344 char *buf = msg->chn->buf->p;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3345 struct hdr_idx *idx = &s->txn->hdr_idx;
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3346 int (*http_find_hdr_func)(const char *name, int len, char *sol,
3347 struct hdr_idx *idx, struct hdr_ctx *ctx);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3348 struct chunk *output = get_trash_chunk();
3349
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3350 ctx.idx = 0;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3351
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3352 /* Choose the header browsing function. */
3353 switch (action) {
3354 case HTTP_REQ_ACT_REPLACE_VAL:
3355 case HTTP_RES_ACT_REPLACE_VAL:
3356 http_find_hdr_func = http_find_header2;
3357 break;
3358 case HTTP_REQ_ACT_REPLACE_HDR:
3359 case HTTP_RES_ACT_REPLACE_HDR:
3360 http_find_hdr_func = http_find_full_header2;
3361 break;
3362 default: /* impossible */
3363 return -1;
3364 }
3365
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3366 while (http_find_hdr_func(name, name_len, buf, idx, &ctx)) {
3367 struct hdr_idx_elem *hdr = idx->v + ctx.idx;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3368 int delta;
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3369 char *val = ctx.line + ctx.val;
3370 char* val_end = val + ctx.vlen;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3371
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3372 if (!regex_exec_match2(re, val, val_end-val, MAX_MATCH, pmatch, 0))
3373 continue;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3374
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3375 output->len = exp_replace(output->str, output->size, val, str, pmatch);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3376 if (output->len == -1)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3377 return -1;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3378
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3379 delta = buffer_replace2(msg->chn->buf, val, val_end, output->str, output->len);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3380
3381 hdr->len += delta;
3382 http_msg_move_end(msg, delta);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3383
3384 /* Adjust the length of the current value of the index. */
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3385 ctx.vlen += delta;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3386 }
3387
3388 return 0;
3389}
3390
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3391static int http_transform_header(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3392 const char* name, unsigned int name_len,
3393 struct list *fmt, struct my_regex *re,
3394 int action)
3395{
3396 struct chunk *replace = get_trash_chunk();
3397
3398 replace->len = build_logline(s, replace->str, replace->size, fmt);
3399 if (replace->len >= replace->size - 1)
3400 return -1;
3401
3402 return http_transform_header_str(s, msg, name, name_len, replace->str, re, action);
3403}
3404
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3405/* Executes the http-request rules <rules> for stream <s>, proxy <px> and
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3406 * transaction <txn>. Returns the verdict of the first rule that prevents
3407 * further processing of the request (auth, deny, ...), and defaults to
3408 * HTTP_RULE_RES_STOP if it executed all rules or stopped on an allow, or
3409 * HTTP_RULE_RES_CONT if the last rule was reached. It may set the TX_CLTARPIT
3410 * on txn->flags if it encounters a tarpit rule.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3411 */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3412enum rule_result
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3413http_req_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3414{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3415 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3416 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3417 struct connection *cli_conn;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3418 struct http_req_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3419 struct hdr_ctx ctx;
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3420 const char *auth_realm;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3421
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3422 /* If "the current_rule_list" match the executed rule list, we are in
3423 * resume condition. If a resume is needed it is always in the action
3424 * and never in the ACL or converters. In this case, we initialise the
3425 * current rule, and go to the action execution point.
3426 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3427 if (s->current_rule) {
3428 rule = s->current_rule;
3429 s->current_rule = NULL;
3430 if (s->current_rule_list == rules)
3431 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3432 }
3433 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3434
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3435 list_for_each_entry(rule, rules, list) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3436 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3437 continue;
3438
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3439 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3440 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3441 int ret;
3442
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3443 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]3444 ret = acl_pass(ret);
3445
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3446 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3447 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3448
3449 if (!ret) /* condition not matched */
3450 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3451 }
3452
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3453resume_execution:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3454 switch (rule->action) {
3455 case HTTP_REQ_ACT_ALLOW:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3456 return HTTP_RULE_RES_STOP;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3457
3458 case HTTP_REQ_ACT_DENY:
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]3459 txn->rule_deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3460 return HTTP_RULE_RES_DENY;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3461
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3462 case HTTP_REQ_ACT_TARPIT:
3463 txn->flags |= TX_CLTARPIT;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]3464 txn->rule_deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3465 return HTTP_RULE_RES_DENY;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3466
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3467 case HTTP_REQ_ACT_AUTH:
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3468 /* Auth might be performed on regular http-req rules as well as on stats */
3469 auth_realm = rule->arg.auth.realm;
3470 if (!auth_realm) {
3471 if (px->uri_auth && rules == &px->uri_auth->http_req_rules)
3472 auth_realm = STATS_DEFAULT_REALM;
3473 else
3474 auth_realm = px->id;
3475 }
3476 /* send 401/407 depending on whether we use a proxy or not. We still
3477 * count one error, because normal browsing won't significantly
3478 * increase the counter but brute force attempts will.
3479 */
3480 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, auth_realm);
3481 txn->status = (txn->flags & TX_USE_PX_CONN) ? 407 : 401;
3482 stream_int_retnclose(&s->si[0], &trash);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3483 stream_inc_http_err_ctr(s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3484 return HTTP_RULE_RES_ABRT;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3485
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3486 case HTTP_REQ_ACT_REDIR:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3487 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3488 return HTTP_RULE_RES_BADREQ;
3489 return HTTP_RULE_RES_DONE;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3490
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3491 case HTTP_REQ_ACT_SET_NICE:
3492 s->task->nice = rule->arg.nice;
3493 break;
3494
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3495 case HTTP_REQ_ACT_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3496 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3497 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]3498 break;
3499
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3500 case HTTP_REQ_ACT_SET_MARK:
3501#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3502 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3503 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]3504#endif
3505 break;
3506
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3507 case HTTP_REQ_ACT_SET_LOGL:
3508 s->logs.level = rule->arg.loglevel;
3509 break;
3510
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3511 case HTTP_REQ_ACT_REPLACE_HDR:
3512 case HTTP_REQ_ACT_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3513 if (http_transform_header(s, &txn->req, rule->arg.hdr_add.name,
3514 rule->arg.hdr_add.name_len,
3515 &rule->arg.hdr_add.fmt,
3516 &rule->arg.hdr_add.re, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3517 return HTTP_RULE_RES_BADREQ;
3518 break;
3519
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3520 case HTTP_REQ_ACT_DEL_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3521 ctx.idx = 0;
3522 /* remove all occurrences of the header */
3523 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3524 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3525 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3526 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3527 break;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3528
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3529 case HTTP_REQ_ACT_SET_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3530 case HTTP_REQ_ACT_ADD_HDR:
3531 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3532 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3533 trash.len = rule->arg.hdr_add.name_len;
3534 trash.str[trash.len++] = ':';
3535 trash.str[trash.len++] = ' ';
3536 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]3537
3538 if (rule->action == HTTP_REQ_ACT_SET_HDR) {
3539 /* remove all occurrences of the header */
3540 ctx.idx = 0;
3541 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3542 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3543 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
3544 }
3545 }
3546
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3547 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3548 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3549
3550 case HTTP_REQ_ACT_DEL_ACL:
3551 case HTTP_REQ_ACT_DEL_MAP: {
3552 struct pat_ref *ref;
3553 char *key;
3554 int len;
3555
3556 /* collect reference */
3557 ref = pat_ref_lookup(rule->arg.map.ref);
3558 if (!ref)
3559 continue;
3560
3561 /* collect key */
3562 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3563 key = trash.str;
3564 key[len] = '\0';
3565
3566 /* perform update */
3567 /* returned code: 1=ok, 0=ko */
3568 pat_ref_delete(ref, key);
3569
3570 break;
3571 }
3572
3573 case HTTP_REQ_ACT_ADD_ACL: {
3574 struct pat_ref *ref;
3575 char *key;
3576 struct chunk *trash_key;
3577 int len;
3578
3579 trash_key = get_trash_chunk();
3580
3581 /* collect reference */
3582 ref = pat_ref_lookup(rule->arg.map.ref);
3583 if (!ref)
3584 continue;
3585
3586 /* collect key */
3587 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3588 key = trash_key->str;
3589 key[len] = '\0';
3590
3591 /* perform update */
3592 /* add entry only if it does not already exist */
3593 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3594 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3595
3596 break;
3597 }
3598
3599 case HTTP_REQ_ACT_SET_MAP: {
3600 struct pat_ref *ref;
3601 char *key, *value;
3602 struct chunk *trash_key, *trash_value;
3603 int len;
3604
3605 trash_key = get_trash_chunk();
3606 trash_value = get_trash_chunk();
3607
3608 /* collect reference */
3609 ref = pat_ref_lookup(rule->arg.map.ref);
3610 if (!ref)
3611 continue;
3612
3613 /* collect key */
3614 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3615 key = trash_key->str;
3616 key[len] = '\0';
3617
3618 /* collect value */
3619 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3620 value = trash_value->str;
3621 value[len] = '\0';
3622
3623 /* perform update */
3624 if (pat_ref_find_elt(ref, key) != NULL)
3625 /* update entry if it exists */
3626 pat_ref_set(ref, key, value, NULL);
3627 else
3628 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3629 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3630
3631 break;
3632 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3633
3634 case HTTP_REQ_ACT_CUSTOM_CONT:
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3635 if (!rule->action_ptr(rule, px, s)) {
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3636 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3637 return HTTP_RULE_RES_YIELD;
3638 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3639 break;
3640
3641 case HTTP_REQ_ACT_CUSTOM_STOP:
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3642 rule->action_ptr(rule, px, s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3643 return HTTP_RULE_RES_DONE;
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3644
3645 case HTTP_REQ_ACT_TRK_SC0 ... HTTP_REQ_ACT_TRK_SCMAX:
3646 /* Note: only the first valid tracking parameter of each
3647 * applies.
3648 */
3649
3650 if (stkctr_entry(&s->stkctr[http_req_trk_idx(rule->action)]) == NULL) {
3651 struct stktable *t;
3652 struct stksess *ts;
3653 struct stktable_key *key;
3654 void *ptr;
3655
3656 t = rule->act_prm.trk_ctr.table.t;
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3657 key = stktable_fetch_key(t, s->be, sess, s, SMP_OPT_DIR_REQ | SMP_OPT_FINAL, rule->act_prm.trk_ctr.expr, NULL);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3658
3659 if (key && (ts = stktable_get_entry(t, key))) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3660 stream_track_stkctr(&s->stkctr[http_req_trk_idx(rule->action)], t, ts);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3661
3662 /* let's count a new HTTP request as it's the first time we do it */
3663 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT);
3664 if (ptr)
3665 stktable_data_cast(ptr, http_req_cnt)++;
3666
3667 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE);
3668 if (ptr)
3669 update_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
3670 t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1);
3671
3672 stkctr_set_flags(&s->stkctr[http_req_trk_idx(rule->action)], STKCTR_TRACK_CONTENT);
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3673 if (sess->fe != s->be)
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3674 stkctr_set_flags(&s->stkctr[http_req_trk_idx(rule->action)], STKCTR_TRACK_BACKEND);
3675 }
3676 }
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3677 break;
3678
3679 case HTTP_REQ_ACT_SET_SRC:
3680 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn)) {
3681 struct sample *smp;
3682
3683 smp = sample_fetch_as_type(px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL, rule->arg.act.p[0], SMP_T_ADDR);
3684
3685 if (smp) {
3686 if (smp->type == SMP_T_IPV4) {
3687 ((struct sockaddr_in *)&cli_conn->addr.from)->sin_family = AF_INET;
3688 ((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr = smp->data.ipv4.s_addr;
3689 ((struct sockaddr_in *)&cli_conn->addr.from)->sin_port = 0;
3690 } else if (smp->type == SMP_T_IPV6) {
3691 ((struct sockaddr_in6 *)&cli_conn->addr.from)->sin6_family = AF_INET6;
3692 memcpy(&((struct sockaddr_in6 *)&cli_conn->addr.from)->sin6_addr, &smp->data.ipv6, sizeof(struct in6_addr));
3693 ((struct sockaddr_in6 *)&cli_conn->addr.from)->sin6_port = 0;
3694 }
3695 }
3696 }
3697 break;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3698 }
3699 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3700
3701 /* we reached the end of the rules, nothing to report */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3702 return HTTP_RULE_RES_CONT;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3703}
3704
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3705
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3706/* Executes the http-response rules <rules> for stream <s> and proxy <px>. It
3707 * returns one of 5 possible statuses: HTTP_RULE_RES_CONT, HTTP_RULE_RES_STOP,
3708 * HTTP_RULE_RES_DONE, HTTP_RULE_RES_YIELD, or HTTP_RULE_RES_BADREQ. If *CONT
3709 * is returned, the process can continue the evaluation of next rule list. If
3710 * *STOP or *DONE is returned, the process must stop the evaluation. If *BADREQ
3711 * is returned, it means the operation could not be processed and a server error
3712 * must be returned. It may set the TX_SVDENY on txn->flags if it encounters a
3713 * deny rule. If *YIELD is returned, the caller must call again the function
3714 * with the same context.
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3715 */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3716static enum rule_result
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3717http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s)
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3718{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3719 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3720 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3721 struct connection *cli_conn;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3722 struct http_res_rule *rule;
3723 struct hdr_ctx ctx;
3724
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3725 /* If "the current_rule_list" match the executed rule list, we are in
3726 * resume condition. If a resume is needed it is always in the action
3727 * and never in the ACL or converters. In this case, we initialise the
3728 * current rule, and go to the action execution point.
3729 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3730 if (s->current_rule) {
3731 rule = s->current_rule;
3732 s->current_rule = NULL;
3733 if (s->current_rule_list == rules)
3734 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3735 }
3736 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3737
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3738 list_for_each_entry(rule, rules, list) {
3739 if (rule->action >= HTTP_RES_ACT_MAX)
3740 continue;
3741
3742 /* check optional condition */
3743 if (rule->cond) {
3744 int ret;
3745
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3746 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]3747 ret = acl_pass(ret);
3748
3749 if (rule->cond->pol == ACL_COND_UNLESS)
3750 ret = !ret;
3751
3752 if (!ret) /* condition not matched */
3753 continue;
3754 }
3755
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3756resume_execution:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3757 switch (rule->action) {
3758 case HTTP_RES_ACT_ALLOW:
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3759 return HTTP_RULE_RES_STOP; /* "allow" rules are OK */
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3760
3761 case HTTP_RES_ACT_DENY:
3762 txn->flags |= TX_SVDENY;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3763 return HTTP_RULE_RES_STOP;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3764
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3765 case HTTP_RES_ACT_SET_NICE:
3766 s->task->nice = rule->arg.nice;
3767 break;
3768
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3769 case HTTP_RES_ACT_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3770 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3771 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]3772 break;
3773
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3774 case HTTP_RES_ACT_SET_MARK:
3775#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3776 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3777 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]3778#endif
3779 break;
3780
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3781 case HTTP_RES_ACT_SET_LOGL:
3782 s->logs.level = rule->arg.loglevel;
3783 break;
3784
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3785 case HTTP_RES_ACT_REPLACE_HDR:
3786 case HTTP_RES_ACT_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3787 if (http_transform_header(s, &txn->rsp, rule->arg.hdr_add.name,
3788 rule->arg.hdr_add.name_len,
3789 &rule->arg.hdr_add.fmt,
3790 &rule->arg.hdr_add.re, rule->action))
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3791 return HTTP_RULE_RES_STOP; /* note: we should report an error here */
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3792 break;
3793
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3794 case HTTP_RES_ACT_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3795 ctx.idx = 0;
3796 /* remove all occurrences of the header */
3797 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3798 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3799 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3800 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3801 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3802
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3803 case HTTP_RES_ACT_SET_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3804 case HTTP_RES_ACT_ADD_HDR:
3805 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3806 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3807 trash.len = rule->arg.hdr_add.name_len;
3808 trash.str[trash.len++] = ':';
3809 trash.str[trash.len++] = ' ';
3810 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]3811
3812 if (rule->action == HTTP_RES_ACT_SET_HDR) {
3813 /* remove all occurrences of the header */
3814 ctx.idx = 0;
3815 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3816 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3817 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3818 }
3819 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3820 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3821 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3822
3823 case HTTP_RES_ACT_DEL_ACL:
3824 case HTTP_RES_ACT_DEL_MAP: {
3825 struct pat_ref *ref;
3826 char *key;
3827 int len;
3828
3829 /* collect reference */
3830 ref = pat_ref_lookup(rule->arg.map.ref);
3831 if (!ref)
3832 continue;
3833
3834 /* collect key */
3835 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3836 key = trash.str;
3837 key[len] = '\0';
3838
3839 /* perform update */
3840 /* returned code: 1=ok, 0=ko */
3841 pat_ref_delete(ref, key);
3842
3843 break;
3844 }
3845
3846 case HTTP_RES_ACT_ADD_ACL: {
3847 struct pat_ref *ref;
3848 char *key;
3849 struct chunk *trash_key;
3850 int len;
3851
3852 trash_key = get_trash_chunk();
3853
3854 /* collect reference */
3855 ref = pat_ref_lookup(rule->arg.map.ref);
3856 if (!ref)
3857 continue;
3858
3859 /* collect key */
3860 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3861 key = trash_key->str;
3862 key[len] = '\0';
3863
3864 /* perform update */
3865 /* check if the entry already exists */
3866 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3867 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3868
3869 break;
3870 }
3871
3872 case HTTP_RES_ACT_SET_MAP: {
3873 struct pat_ref *ref;
3874 char *key, *value;
3875 struct chunk *trash_key, *trash_value;
3876 int len;
3877
3878 trash_key = get_trash_chunk();
3879 trash_value = get_trash_chunk();
3880
3881 /* collect reference */
3882 ref = pat_ref_lookup(rule->arg.map.ref);
3883 if (!ref)
3884 continue;
3885
3886 /* collect key */
3887 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3888 key = trash_key->str;
3889 key[len] = '\0';
3890
3891 /* collect value */
3892 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3893 value = trash_value->str;
3894 value[len] = '\0';
3895
3896 /* perform update */
3897 if (pat_ref_find_elt(ref, key) != NULL)
3898 /* update entry if it exists */
3899 pat_ref_set(ref, key, value, NULL);
3900 else
3901 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3902 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3903
3904 break;
3905 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3906
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3907 case HTTP_RES_ACT_REDIR:
3908 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3909 return HTTP_RULE_RES_BADREQ;
3910 return HTTP_RULE_RES_DONE;
3911
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3912 case HTTP_RES_ACT_CUSTOM_CONT:
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3913 if (!rule->action_ptr(rule, px, s)) {
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3914 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3915 return HTTP_RULE_RES_YIELD;
3916 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3917 break;
3918
3919 case HTTP_RES_ACT_CUSTOM_STOP:
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3920 rule->action_ptr(rule, px, s);
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3921 return HTTP_RULE_RES_STOP;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3922 }
3923 }
3924
3925 /* we reached the end of the rules, nothing to report */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3926 return HTTP_RULE_RES_CONT;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3927}
3928
3929
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3930/* Perform an HTTP redirect based on the information in <rule>. The function
3931 * returns non-zero on success, or zero in case of a, irrecoverable error such
3932 * as too large a request to build a valid response.
3933 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3934static 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]3935{
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3936 struct http_msg *req = &txn->req;
3937 struct http_msg *res = &txn->rsp;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3938 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3939 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3940
3941 /* build redirect message */
3942 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3943 case 308:
3944 msg_fmt = HTTP_308;
3945 break;
3946 case 307:
3947 msg_fmt = HTTP_307;
3948 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3949 case 303:
3950 msg_fmt = HTTP_303;
3951 break;
3952 case 301:
3953 msg_fmt = HTTP_301;
3954 break;
3955 case 302:
3956 default:
3957 msg_fmt = HTTP_302;
3958 break;
3959 }
3960
3961 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3962 return 0;
3963
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3964 location = trash.str + trash.len;
3965
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3966 switch(rule->type) {
3967 case REDIRECT_TYPE_SCHEME: {
3968 const char *path;
3969 const char *host;
3970 struct hdr_ctx ctx;
3971 int pathlen;
3972 int hostlen;
3973
3974 host = "";
3975 hostlen = 0;
3976 ctx.idx = 0;
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3977 if (http_find_header2("Host", 4, req->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3978 host = ctx.line + ctx.val;
3979 hostlen = ctx.vlen;
3980 }
3981
3982 path = http_get_path(txn);
3983 /* build message using path */
3984 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3985 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]3986 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3987 int qs = 0;
3988 while (qs < pathlen) {
3989 if (path[qs] == '?') {
3990 pathlen = qs;
3991 break;
3992 }
3993 qs++;
3994 }
3995 }
3996 } else {
3997 path = "/";
3998 pathlen = 1;
3999 }
4000
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4001 if (rule->rdr_str) { /* this is an old "redirect" rule */
4002 /* check if we can add scheme + "://" + host + path */
4003 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
4004 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4005
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4006 /* add scheme */
4007 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
4008 trash.len += rule->rdr_len;
4009 }
4010 else {
4011 /* add scheme with executing log format */
4012 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]4013
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4014 /* check if we can add scheme + "://" + host + path */
4015 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
4016 return 0;
4017 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4018 /* add "://" */
4019 memcpy(trash.str + trash.len, "://", 3);
4020 trash.len += 3;
4021
4022 /* add host */
4023 memcpy(trash.str + trash.len, host, hostlen);
4024 trash.len += hostlen;
4025
4026 /* add path */
4027 memcpy(trash.str + trash.len, path, pathlen);
4028 trash.len += pathlen;
4029
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4030 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4031 if (trash.len && trash.str[trash.len - 1] != '/' &&
4032 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
4033 if (trash.len > trash.size - 5)
4034 return 0;
4035 trash.str[trash.len] = '/';
4036 trash.len++;
4037 }
4038
4039 break;
4040 }
4041 case REDIRECT_TYPE_PREFIX: {
4042 const char *path;
4043 int pathlen;
4044
4045 path = http_get_path(txn);
4046 /* build message using path */
4047 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4048 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]4049 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
4050 int qs = 0;
4051 while (qs < pathlen) {
4052 if (path[qs] == '?') {
4053 pathlen = qs;
4054 break;
4055 }
4056 qs++;
4057 }
4058 }
4059 } else {
4060 path = "/";
4061 pathlen = 1;
4062 }
4063
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4064 if (rule->rdr_str) { /* this is an old "redirect" rule */
4065 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
4066 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4067
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4068 /* add prefix. Note that if prefix == "/", we don't want to
4069 * add anything, otherwise it makes it hard for the user to
4070 * configure a self-redirection.
4071 */
4072 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
4073 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
4074 trash.len += rule->rdr_len;
4075 }
4076 }
4077 else {
4078 /* add prefix with executing log format */
4079 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
4080
4081 /* Check length */
4082 if (trash.len + pathlen > trash.size - 4)
4083 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4084 }
4085
4086 /* add path */
4087 memcpy(trash.str + trash.len, path, pathlen);
4088 trash.len += pathlen;
4089
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4090 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4091 if (trash.len && trash.str[trash.len - 1] != '/' &&
4092 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
4093 if (trash.len > trash.size - 5)
4094 return 0;
4095 trash.str[trash.len] = '/';
4096 trash.len++;
4097 }
4098
4099 break;
4100 }
4101 case REDIRECT_TYPE_LOCATION:
4102 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4103 if (rule->rdr_str) { /* this is an old "redirect" rule */
4104 if (trash.len + rule->rdr_len > trash.size - 4)
4105 return 0;
4106
4107 /* add location */
4108 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
4109 trash.len += rule->rdr_len;
4110 }
4111 else {
4112 /* add location with executing log format */
4113 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]4114
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4115 /* Check left length */
4116 if (trash.len > trash.size - 4)
4117 return 0;
4118 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4119 break;
4120 }
4121
4122 if (rule->cookie_len) {
4123 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
4124 trash.len += 14;
4125 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
4126 trash.len += rule->cookie_len;
4127 memcpy(trash.str + trash.len, "\r\n", 2);
4128 trash.len += 2;
4129 }
4130
4131 /* add end of headers and the keep-alive/close status.
4132 * We may choose to set keep-alive if the Location begins
4133 * with a slash, because the client will come back to the
4134 * same server.
4135 */
4136 txn->status = rule->code;
4137 /* let's log the request time */
4138 s->logs.tv_request = now;
4139
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4140 if (*location == '/' &&
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4141 (req->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau2de8a502015-05-28 17:23:54 +0200[diff] [blame]4142 ((!(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]4143 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
4144 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
4145 /* keep-alive possible */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4146 if (!(req->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4147 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4148 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
4149 trash.len += 30;
4150 } else {
4151 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
4152 trash.len += 24;
4153 }
4154 }
4155 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
4156 trash.len += 4;
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4157 bo_inject(res->chn, trash.str, trash.len);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4158 /* "eat" the request */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4159 bi_fast_delete(req->chn->buf, req->sov);
4160 req->next -= req->sov;
4161 req->sov = 0;
4162 s->req.analysers = AN_REQ_HTTP_XFER_BODY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4163 s->res.analysers = AN_RES_HTTP_XFER_BODY;
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4164 req->msg_state = HTTP_MSG_CLOSED;
4165 res->msg_state = HTTP_MSG_DONE;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]4166 /* Trim any possible response */
4167 res->chn->buf->i = 0;
4168 res->next = res->sov = 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4169 } else {
4170 /* keep-alive not possible */
4171 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4172 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
4173 trash.len += 29;
4174 } else {
4175 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
4176 trash.len += 23;
4177 }
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4178 stream_int_retnclose(&s->si[0], &trash);
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4179 req->chn->analysers = 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4180 }
4181
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4182 if (!(s->flags & SF_ERR_MASK))
4183 s->flags |= SF_ERR_LOCAL;
4184 if (!(s->flags & SF_FINST_MASK))
4185 s->flags |= SF_FINST_R;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4186
4187 return 1;
4188}
4189
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4190/* This stream analyser runs all HTTP request processing which is common to
4191 * frontends and backends, which means blocking ACLs, filters, connection-close,
4192 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4193 * 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]4194 * either needs more data or wants to immediately abort the request (eg: deny,
4195 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4196 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4197int 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]4198{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4199 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4200 struct http_txn *txn = s->txn;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4201 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4202 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]4203 struct cond_wordlist *wl;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4204 enum rule_result verdict;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4205
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4206 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4207 /* we need more data */
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4208 goto return_prx_yield;
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4209 }
4210
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4211 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]4212 now_ms, __FUNCTION__,
4213 s,
4214 req,
4215 req->rex, req->wex,
4216 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4217 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4218 req->analysers);
4219
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4220 /* just in case we have some per-backend tracking */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4221 stream_inc_be_http_req_ctr(s);
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4222
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4223 /* evaluate http-request rules */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4224 if (!LIST_ISEMPTY(&px->http_req_rules)) {
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]4225 verdict = http_req_get_intercept_rule(px, &px->http_req_rules, s);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]4226
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4227 switch (verdict) {
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4228 case HTTP_RULE_RES_YIELD: /* some data miss, call the function later. */
4229 goto return_prx_yield;
4230
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4231 case HTTP_RULE_RES_CONT:
4232 case HTTP_RULE_RES_STOP: /* nothing to do */
4233 break;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4234
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4235 case HTTP_RULE_RES_DENY: /* deny or tarpit */
4236 if (txn->flags & TX_CLTARPIT)
4237 goto tarpit;
4238 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4239
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4240 case HTTP_RULE_RES_ABRT: /* abort request, response already sent. Eg: auth */
4241 goto return_prx_cond;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4242
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4243 case HTTP_RULE_RES_DONE: /* OK, but terminate request processing (eg: redirect) */
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4244 goto done;
4245
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4246 case HTTP_RULE_RES_BADREQ: /* failed with a bad request */
4247 goto return_bad_req;
4248 }
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4249 }
4250
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4251 /* OK at this stage, we know that the request was accepted according to
4252 * the http-request rules, we can check for the stats. Note that the
4253 * URI is detected *before* the req* rules in order not to be affected
4254 * by a possible reqrep, while they are processed *after* so that a
4255 * reqdeny can still block them. This clearly needs to change in 1.6!
4256 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4257 if (stats_check_uri(&s->si[1], txn, px)) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4258 s->target = &http_stats_applet.obj_type;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4259 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target)))) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4260 txn->status = 500;
4261 s->logs.tv_request = now;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4262 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]4263
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4264 if (!(s->flags & SF_ERR_MASK))
4265 s->flags |= SF_ERR_RESOURCE;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4266 goto return_prx_cond;
4267 }
4268
4269 /* parse the whole stats request and extract the relevant information */
4270 http_handle_stats(s, req);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]4271 verdict = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4272 /* not all actions implemented: deny, allow, auth */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4273
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4274 if (verdict == HTTP_RULE_RES_DENY) /* stats http-request deny */
4275 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4276
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4277 if (verdict == HTTP_RULE_RES_ABRT) /* stats auth / stats http-request auth */
4278 goto return_prx_cond;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]4279 }
4280
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4281 /* evaluate the req* rules except reqadd */
4282 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]4283 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4284 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4285
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4286 if (txn->flags & TX_CLDENY)
4287 goto deny;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]4288
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4289 if (txn->flags & TX_CLTARPIT)
4290 goto tarpit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4291 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4292
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4293 /* add request headers from the rule sets in the same order */
4294 list_for_each_entry(wl, &px->req_add, list) {
4295 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4296 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]4297 ret = acl_pass(ret);
4298 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
4299 ret = !ret;
4300 if (!ret)
4301 continue;
4302 }
4303
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4304 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4305 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]4306 }
4307
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4308
4309 /* Proceed with the stats now. */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]4310 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]4311 /* process the stats request now */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4312 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
4313 sess->fe->fe_counters.intercepted_req++;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4314
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4315 if (!(s->flags & SF_ERR_MASK)) // this is not really an error but it is
4316 s->flags |= SF_ERR_LOCAL; // to mark that it comes from the proxy
4317 if (!(s->flags & SF_FINST_MASK))
4318 s->flags |= SF_FINST_R;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4319
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4320 /* we may want to compress the stats page */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4321 if (sess->fe->comp || s->be->comp)
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4322 select_compression_request_header(s, req->buf);
4323
4324 /* enable the minimally required analyzers to handle keep-alive and compression on the HTTP response */
Willy Tarreau5506e3f2014-11-20 22:23:10 +0100[diff] [blame]4325 req->analysers = (req->analysers & AN_REQ_HTTP_BODY) | AN_REQ_HTTP_XFER_BODY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4326 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4327 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4328
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4329 /* check whether we have some ACLs set to redirect this request */
4330 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4331 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4332 int ret;
4333
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4334 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]4335 ret = acl_pass(ret);
4336 if (rule->cond->pol == ACL_COND_UNLESS)
4337 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4338 if (!ret)
4339 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4340 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4341 if (!http_apply_redirect_rule(rule, s, txn))
4342 goto return_bad_req;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4343 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4344 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4345
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4346 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
4347 * If this happens, then the data will not come immediately, so we must
4348 * send all what we have without waiting. Note that due to the small gain
4349 * 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]4350 * 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]4351 * itself once used.
4352 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4353 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4354
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4355 done: /* done with this analyser, continue with next ones that the calling
4356 * points will have set, if any.
4357 */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4358 req->analyse_exp = TICK_ETERNITY;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4359 done_without_exp: /* done with this analyser, but dont reset the analyse_exp. */
4360 req->analysers &= ~an_bit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4361 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4362
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4363 tarpit:
4364 /* When a connection is tarpitted, we use the tarpit timeout,
4365 * which may be the same as the connect timeout if unspecified.
4366 * If unset, then set it to zero because we really want it to
4367 * eventually expire. We build the tarpit as an analyser.
4368 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4369 channel_erase(&s->req);
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4370
4371 /* wipe the request out so that we can drop the connection early
4372 * if the client closes first.
4373 */
4374 channel_dont_connect(req);
4375 req->analysers = 0; /* remove switching rules etc... */
4376 req->analysers |= AN_REQ_HTTP_TARPIT;
4377 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
4378 if (!req->analyse_exp)
4379 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4380 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4381 sess->fe->fe_counters.denied_req++;
4382 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4383 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4384 if (sess->listener->counters)
4385 sess->listener->counters->denied_req++;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4386 goto done_without_exp;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4387
4388 deny: /* this request was blocked (denied) */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4389 txn->flags |= TX_CLDENY;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]4390 txn->status = http_err_codes[txn->rule_deny_status];
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4391 s->logs.tv_request = now;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]4392 stream_int_retnclose(&s->si[0], http_error_message(s, txn->rule_deny_status));
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4393 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4394 sess->fe->fe_counters.denied_req++;
4395 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4396 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4397 if (sess->listener->counters)
4398 sess->listener->counters->denied_req++;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4399 goto return_prx_cond;
4400
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4401 return_bad_req:
4402 /* We centralize bad requests processing here */
4403 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
4404 /* we detected a parsing error. We want to archive this request
4405 * in the dedicated proxy area for later troubleshooting.
4406 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4407 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]4408 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4409
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4410 txn->req.msg_state = HTTP_MSG_ERROR;
4411 txn->status = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4412 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4413
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4414 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4415 if (sess->listener->counters)
4416 sess->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4417
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4418 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4419 if (!(s->flags & SF_ERR_MASK))
4420 s->flags |= SF_ERR_PRXCOND;
4421 if (!(s->flags & SF_FINST_MASK))
4422 s->flags |= SF_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]4423
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4424 req->analysers = 0;
4425 req->analyse_exp = TICK_ETERNITY;
4426 return 0;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4427
4428 return_prx_yield:
4429 channel_dont_connect(req);
4430 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4431}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4432
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4433/* This function performs all the processing enabled for the current request.
4434 * It returns 1 if the processing can continue on next analysers, or zero if it
4435 * needs more data, encounters an error, or wants to immediately abort the
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4436 * request. It relies on buffers flags, and updates s->req.analysers.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4437 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4438int http_process_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4439{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4440 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4441 struct http_txn *txn = s->txn;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4442 struct http_msg *msg = &txn->req;
Willy Tarreauee335e62015-04-21 18:15:13 +0200[diff] [blame]4443 struct connection *cli_conn = objt_conn(strm_sess(s)->origin);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4444
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4445 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4446 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4447 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4448 return 0;
4449 }
4450
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4451 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]4452 now_ms, __FUNCTION__,
4453 s,
4454 req,
4455 req->rex, req->wex,
4456 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4457 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4458 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4459
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4460 if (sess->fe->comp || s->be->comp)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]4461 select_compression_request_header(s, req->buf);
4462
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4463 /*
4464 * Right now, we know that we have processed the entire headers
4465 * and that unwanted requests have been filtered out. We can do
4466 * whatever we want with the remaining request. Also, now we
4467 * may have separate values for ->fe, ->be.
4468 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4469
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4470 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4471 * If HTTP PROXY is set we simply get remote server address parsing
4472 * incoming request. Note that this requires that a connection is
4473 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4474 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4475 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SF_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4476 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4477 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4478
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]4479 /* Note that for now we don't reuse existing proxy connections */
Willy Tarreau973a5422015-08-05 21:47:23 +0200[diff] [blame]4480 if (unlikely((conn = si_alloc_conn(&s->si[1])) == NULL)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4481 txn->req.msg_state = HTTP_MSG_ERROR;
4482 txn->status = 500;
4483 req->analysers = 0;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4484 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_500));
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4485
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4486 if (!(s->flags & SF_ERR_MASK))
4487 s->flags |= SF_ERR_RESOURCE;
4488 if (!(s->flags & SF_FINST_MASK))
4489 s->flags |= SF_FINST_R;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4490
4491 return 0;
4492 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4493
4494 path = http_get_path(txn);
4495 url2sa(req->buf->p + msg->sl.rq.u,
4496 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]4497 &conn->addr.to, NULL);
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4498 /* if the path was found, we have to remove everything between
4499 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
4500 * found, we need to replace from req->buf->p + msg->sl.rq.u for
4501 * u_l characters by a single "/".
4502 */
4503 if (path) {
4504 char *cur_ptr = req->buf->p;
4505 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4506 int delta;
4507
4508 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
4509 http_msg_move_end(&txn->req, delta);
4510 cur_end += delta;
4511 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4512 goto return_bad_req;
4513 }
4514 else {
4515 char *cur_ptr = req->buf->p;
4516 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4517 int delta;
4518
4519 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
4520 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
4521 http_msg_move_end(&txn->req, delta);
4522 cur_end += delta;
4523 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4524 goto return_bad_req;
4525 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4526 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4527
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4528 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4529 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4530 * Note that doing so might move headers in the request, but
4531 * the fields will stay coherent and the URI will not move.
4532 * This should only be performed in the backend.
4533 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4534 if ((s->be->cookie_name || s->be->appsession_name || sess->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4535 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
4536 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]4537
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4538 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4539 * 8: the appsession cookie was looked up very early in 1.2,
4540 * so let's do the same now.
4541 */
4542
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]4543 /* It needs to look into the URI unless persistence must be ignored */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4544 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SF_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4545 get_srv_from_appsession(s, req->buf->p + msg->sl.rq.u, msg->sl.rq.u_l);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4546 }
4547
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4548 /* add unique-id if "header-unique-id" is specified */
4549
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4550 if (!LIST_ISEMPTY(&sess->fe->format_unique_id)) {
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4551 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
4552 goto return_bad_req;
4553 s->unique_id[0] = '\0';
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4554 build_logline(s, s->unique_id, UNIQUEID_LEN, &sess->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4555 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4556
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4557 if (sess->fe->header_unique_id && s->unique_id) {
4558 chunk_printf(&trash, "%s: %s", sess->fe->header_unique_id, s->unique_id);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4559 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4560 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4561 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]4562 goto return_bad_req;
4563 }
4564
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4565 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4566 * 9: add X-Forwarded-For if either the frontend or the backend
4567 * asks for it.
4568 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4569 if ((sess->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4570 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4571 if (!((sess->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
4572 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : sess->fe->fwdfor_hdr_name,
4573 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]4574 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4575 /* The header is set to be added only if none is present
4576 * and we found it, so don't do anything.
4577 */
4578 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4579 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4580 /* Add an X-Forwarded-For header unless the source IP is
4581 * in the 'except' network range.
4582 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4583 if ((!sess->fe->except_mask.s_addr ||
4584 (((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr & sess->fe->except_mask.s_addr)
4585 != sess->fe->except_net.s_addr) &&
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4586 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4587 (((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]4588 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4589 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4590 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4591 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4592
4593 /* Note: we rely on the backend to get the header name to be used for
4594 * x-forwarded-for, because the header is really meant for the backends.
4595 * However, if the backend did not specify any option, we have to rely
4596 * on the frontend's header name.
4597 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4598 if (s->be->fwdfor_hdr_len) {
4599 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4600 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4601 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4602 len = sess->fe->fwdfor_hdr_len;
4603 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4604 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4605 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]4606
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4607 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]4608 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4609 }
4610 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4611 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4612 /* FIXME: for the sake of completeness, we should also support
4613 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4614 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4615 int len;
4616 char pn[INET6_ADDRSTRLEN];
4617 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4618 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4619 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4620
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4621 /* Note: we rely on the backend to get the header name to be used for
4622 * x-forwarded-for, because the header is really meant for the backends.
4623 * However, if the backend did not specify any option, we have to rely
4624 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4625 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4626 if (s->be->fwdfor_hdr_len) {
4627 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4628 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4629 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4630 len = sess->fe->fwdfor_hdr_len;
4631 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4632 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4633 len += snprintf(trash.str + len, trash.size - len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4634
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4635 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]4636 goto return_bad_req;
4637 }
4638 }
4639
4640 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4641 * 10: add X-Original-To if either the frontend or the backend
4642 * asks for it.
4643 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4644 if ((sess->fe->options | s->be->options) & PR_O_ORGTO) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4645
4646 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4647 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4648 /* Add an X-Original-To header unless the destination IP is
4649 * in the 'except' network range.
4650 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4651 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4652
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4653 if (cli_conn->addr.to.ss_family == AF_INET &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4654 ((!sess->fe->except_mask_to.s_addr ||
4655 (((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr.s_addr & sess->fe->except_mask_to.s_addr)
4656 != sess->fe->except_to.s_addr) &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4657 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4658 (((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]4659 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4660 int len;
4661 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4662 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4663
4664 /* Note: we rely on the backend to get the header name to be used for
4665 * x-original-to, because the header is really meant for the backends.
4666 * However, if the backend did not specify any option, we have to rely
4667 * on the frontend's header name.
4668 */
4669 if (s->be->orgto_hdr_len) {
4670 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4671 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4672 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4673 len = sess->fe->orgto_hdr_len;
4674 memcpy(trash.str, sess->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4675 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4676 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]4677
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4678 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]4679 goto return_bad_req;
4680 }
4681 }
4682 }
4683
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4684 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
4685 * If an "Upgrade" token is found, the header is left untouched in order not to have
4686 * to deal with some servers bugs : some of them fail an Upgrade if anything but
4687 * "Upgrade" is present in the Connection header.
4688 */
4689 if (!(txn->flags & TX_HDR_CONN_UPG) &&
4690 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4691 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4692 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4693 unsigned int want_flags = 0;
4694
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4695 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4696 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4697 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4698 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4699 !((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4700 want_flags |= TX_CON_CLO_SET;
4701 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4702 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4703 ((sess->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4704 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4705 ((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4706 want_flags |= TX_CON_KAL_SET;
4707 }
4708
4709 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4710 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4711 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4712
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4713
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4714 /* If we have no server assigned yet and we're balancing on url_param
4715 * with a POST request, we may be interested in checking the body for
4716 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4717 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4718 if (!(s->flags & (SF_ASSIGNED|SF_DIRECT)) &&
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4719 s->txn->meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4720 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4721 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4722 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4723 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4724
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4725 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4726 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4727#ifdef TCP_QUICKACK
4728 /* We expect some data from the client. Unless we know for sure
4729 * we already have a full request, we have to re-enable quick-ack
4730 * in case we previously disabled it, otherwise we might cause
4731 * the client to delay further data.
4732 */
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4733 if ((sess->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]4734 cli_conn && conn_ctrl_ready(cli_conn) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4735 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4736 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4737 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4738#endif
4739 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4740
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4741 /*************************************************************
4742 * OK, that's finished for the headers. We have done what we *
4743 * could. Let's switch to the DATA state. *
4744 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4745 req->analyse_exp = TICK_ETERNITY;
4746 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4747
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4748 /* if the server closes the connection, we want to immediately react
4749 * and close the socket to save packets and syscalls.
4750 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4751 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4752 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4753
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4754 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4755 /* OK let's go on with the BODY now */
4756 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4757
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4758 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4759 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4760 /* we detected a parsing error. We want to archive this request
4761 * in the dedicated proxy area for later troubleshooting.
4762 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4763 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]4764 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4765
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4766 txn->req.msg_state = HTTP_MSG_ERROR;
4767 txn->status = 400;
4768 req->analysers = 0;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4769 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4770
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4771 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4772 if (sess->listener->counters)
4773 sess->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4774
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4775 if (!(s->flags & SF_ERR_MASK))
4776 s->flags |= SF_ERR_PRXCOND;
4777 if (!(s->flags & SF_FINST_MASK))
4778 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4779 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4780}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4781
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4782/* This function is an analyser which processes the HTTP tarpit. It always
4783 * returns zero, at the beginning because it prevents any other processing
4784 * from occurring, and at the end because it terminates the request.
4785 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4786int http_process_tarpit(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4787{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4788 struct http_txn *txn = s->txn;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4789
4790 /* This connection is being tarpitted. The CLIENT side has
4791 * already set the connect expiration date to the right
4792 * timeout. We just have to check that the client is still
4793 * there and that the timeout has not expired.
4794 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4795 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4796 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4797 !tick_is_expired(req->analyse_exp, now_ms))
4798 return 0;
4799
4800 /* We will set the queue timer to the time spent, just for
4801 * logging purposes. We fake a 500 server error, so that the
4802 * attacker will not suspect his connection has been tarpitted.
4803 * It will not cause trouble to the logs because we can exclude
4804 * the tarpitted connections by filtering on the 'PT' status flags.
4805 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4806 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4807
4808 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4809 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4810 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4811
4812 req->analysers = 0;
4813 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4814
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4815 if (!(s->flags & SF_ERR_MASK))
4816 s->flags |= SF_ERR_PRXCOND;
4817 if (!(s->flags & SF_FINST_MASK))
4818 s->flags |= SF_FINST_T;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4819 return 0;
4820}
4821
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4822/* This function is an analyser which waits for the HTTP request body. It waits
4823 * for either the buffer to be full, or the full advertised contents to have
4824 * reached the buffer. It must only be called after the standard HTTP request
4825 * processing has occurred, because it expects the request to be parsed and will
4826 * look for the Expect header. It may send a 100-Continue interim response. It
4827 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
4828 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
4829 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4830 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4831int http_wait_for_request_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4832{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4833 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4834 struct http_txn *txn = s->txn;
4835 struct http_msg *msg = &s->txn->req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4836
4837 /* We have to parse the HTTP request body to find any required data.
4838 * "balance url_param check_post" should have been the only way to get
4839 * into this. We were brought here after HTTP header analysis, so all
4840 * related structures are ready.
4841 */
4842
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4843 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
4844 /* This is the first call */
4845 if (msg->msg_state < HTTP_MSG_BODY)
4846 goto missing_data;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4847
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4848 if (msg->msg_state < HTTP_MSG_100_SENT) {
4849 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4850 * send an HTTP/1.1 100 Continue intermediate response.
4851 */
4852 if (msg->flags & HTTP_MSGF_VER_11) {
4853 struct hdr_ctx ctx;
4854 ctx.idx = 0;
4855 /* Expect is allowed in 1.1, look for it */
4856 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
4857 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4858 bo_inject(&s->res, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4859 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4860 }
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4861 msg->msg_state = HTTP_MSG_100_SENT;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4862 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4863
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4864 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4865 * req->buf->p still points to the beginning of the message. We
4866 * must save the body in msg->next because it survives buffer
4867 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4868 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4869 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4870
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4871 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4872 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4873 else
4874 msg->msg_state = HTTP_MSG_DATA;
4875 }
4876
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4877 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
4878 /* We're in content-length mode, we just have to wait for enough data. */
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4879 if (http_body_bytes(msg) < msg->body_len)
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4880 goto missing_data;
4881
4882 /* OK we have everything we need now */
4883 goto http_end;
4884 }
4885
4886 /* OK here we're parsing a chunked-encoded message */
4887
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4888 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4889 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4890 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4891 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4892 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4893 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4894
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4895 if (!ret)
4896 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4897 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4898 stream_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4899 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4900 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4901 }
4902
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4903 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4904 * We have the first data byte is in msg->sov + msg->sol. We're waiting
4905 * for at least a whole chunk or the whole content length bytes after
4906 * msg->sov + msg->sol.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4907 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4908 if (msg->msg_state == HTTP_MSG_TRAILERS)
4909 goto http_end;
4910
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4911 if (http_body_bytes(msg) >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4912 goto http_end;
4913
4914 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4915 /* we get here if we need to wait for more data. If the buffer is full,
4916 * we have the maximum we can expect.
4917 */
4918 if (buffer_full(req->buf, global.tune.maxrewrite))
4919 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4920
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4921 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4922 txn->status = 408;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4923 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4924
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4925 if (!(s->flags & SF_ERR_MASK))
4926 s->flags |= SF_ERR_CLITO;
4927 if (!(s->flags & SF_FINST_MASK))
4928 s->flags |= SF_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4929 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4930 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4931
4932 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4933 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4934 /* Not enough data. We'll re-use the http-request
4935 * timeout here. Ideally, we should set the timeout
4936 * relative to the accept() date. We just set the
4937 * request timeout once at the beginning of the
4938 * request.
4939 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4940 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4941 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4942 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4943 return 0;
4944 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4945
4946 http_end:
4947 /* The situation will not evolve, so let's give up on the analysis. */
4948 s->logs.tv_request = now; /* update the request timer to reflect full request */
4949 req->analysers &= ~an_bit;
4950 req->analyse_exp = TICK_ETERNITY;
4951 return 1;
4952
4953 return_bad_req: /* let's centralize all bad requests */
4954 txn->req.msg_state = HTTP_MSG_ERROR;
4955 txn->status = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4956 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4957
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4958 if (!(s->flags & SF_ERR_MASK))
4959 s->flags |= SF_ERR_PRXCOND;
4960 if (!(s->flags & SF_FINST_MASK))
4961 s->flags |= SF_FINST_R;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4962
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4963 return_err_msg:
4964 req->analysers = 0;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4965 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4966 if (sess->listener->counters)
4967 sess->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4968 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4969}
4970
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4971/* send a server's name with an outgoing request over an established connection.
4972 * Note: this function is designed to be called once the request has been scheduled
4973 * for being forwarded. This is the reason why it rewinds the buffer before
4974 * proceeding.
4975 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4976int 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]4977
4978 struct hdr_ctx ctx;
4979
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4980 char *hdr_name = be->server_id_hdr_name;
4981 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4982 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4983 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4984 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4985
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4986 ctx.idx = 0;
4987
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]4988 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4989 if (old_o) {
4990 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4991 b_rew(chn->buf, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4992 txn->req.next += old_o;
4993 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4994 }
4995
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4996 old_i = chn->buf->i;
4997 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]4998 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4999 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5000 }
5001
5002 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5003 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5004 memcpy(hdr_val, hdr_name, hdr_name_len);
5005 hdr_val += hdr_name_len;
5006 *hdr_val++ = ':';
5007 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5008 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
5009 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]5010
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5011 if (old_o) {
5012 /* If this was a forwarded request, we must readjust the amount of
5013 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]5014 * variations. Note that the current state is >= HTTP_MSG_BODY,
5015 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5016 */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]5017 old_o += chn->buf->i - old_i;
5018 b_adv(chn->buf, old_o);
5019 txn->req.next -= old_o;
5020 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5021 }
5022
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5023 return 0;
5024}
5025
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5026/* Terminate current transaction and prepare a new one. This is very tricky
5027 * right now but it works.
5028 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5029void http_end_txn_clean_session(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5030{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5031 int prev_status = s->txn->status;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]5032 struct proxy *fe = strm_fe(s);
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5033 struct connection *srv_conn;
5034 struct server *srv;
Willy Tarreau449d74a2015-08-05 17:16:33 +0200[diff] [blame]5035 unsigned int prev_flags = s->txn->flags;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5036
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5037 /* FIXME: We need a more portable way of releasing a backend's and a
5038 * server's connections. We need a safer way to reinitialize buffer
5039 * flags. We also need a more accurate method for computing per-request
5040 * data.
5041 */
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5042 srv_conn = objt_conn(s->si[1].end);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5043
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5044 /* unless we're doing keep-alive, we want to quickly close the connection
5045 * to the server.
5046 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5047 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5048 !si_conn_ready(&s->si[1])) {
5049 s->si[1].flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
5050 si_shutr(&s->si[1]);
5051 si_shutw(&s->si[1]);
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5052 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5053
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5054 if (s->flags & SF_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5055 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]5056 if (unlikely(s->srv_conn))
5057 sess_change_server(s, NULL);
5058 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5059
5060 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5061 stream_process_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5062
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5063 if (s->txn->status) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5064 int n;
5065
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5066 n = s->txn->status / 100;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5067 if (n < 1 || n > 5)
5068 n = 0;
5069
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5070 if (fe->mode == PR_MODE_HTTP) {
5071 fe->fe_counters.p.http.rsp[n]++;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5072 if (s->comp_algo && (s->flags & SF_COMP_READY))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5073 fe->fe_counters.p.http.comp_rsp++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5074 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5075 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5076 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5077 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5078 s->be->be_counters.p.http.cum_req++;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5079 if (s->comp_algo && (s->flags & SF_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5080 s->be->be_counters.p.http.comp_rsp++;
5081 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5082 }
5083
5084 /* don't count other requests' data */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5085 s->logs.bytes_in -= s->req.buf->i;
5086 s->logs.bytes_out -= s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5087
5088 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5089 if (!LIST_ISEMPTY(&fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5090 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5091 (!(fe->options & PR_O_NULLNOLOG) || s->req.total)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5092 s->do_log(s);
5093 }
5094
Willy Tarreaud713bcc2014-06-25 15:36:04 +0200[diff] [blame]5095 /* stop tracking content-based counters */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5096 stream_stop_content_counters(s);
5097 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +0200[diff] [blame]5098
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5099 s->logs.accept_date = date; /* user-visible date for logging */
5100 s->logs.tv_accept = now; /* corrected date for internal use */
5101 tv_zero(&s->logs.tv_request);
5102 s->logs.t_queue = -1;
5103 s->logs.t_connect = -1;
5104 s->logs.t_data = -1;
5105 s->logs.t_close = 0;
5106 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
5107 s->logs.srv_queue_size = 0; /* we will get this number soon */
5108
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5109 s->logs.bytes_in = s->req.total = s->req.buf->i;
5110 s->logs.bytes_out = s->res.total = s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5111
5112 if (s->pend_pos)
5113 pendconn_free(s->pend_pos);
5114
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5115 if (objt_server(s->target)) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5116 if (s->flags & SF_CURR_SESS) {
5117 s->flags &= ~SF_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5118 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5119 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5120 if (may_dequeue_tasks(objt_server(s->target), s->be))
5121 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5122 }
5123
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5124 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5125
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5126 /* only release our endpoint if we don't intend to reuse the
5127 * connection.
5128 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5129 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5130 !si_conn_ready(&s->si[1])) {
5131 si_release_endpoint(&s->si[1]);
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5132 srv_conn = NULL;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5133 }
5134
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5135 s->si[1].state = s->si[1].prev_state = SI_ST_INI;
5136 s->si[1].err_type = SI_ET_NONE;
5137 s->si[1].conn_retries = 0; /* used for logging too */
5138 s->si[1].exp = TICK_ETERNITY;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5139 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]5140 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);
5141 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]5142 s->flags &= ~(SF_DIRECT|SF_ASSIGNED|SF_ADDR_SET|SF_BE_ASSIGNED|SF_FORCE_PRST|SF_IGNORE_PRST);
5143 s->flags &= ~(SF_CURR_SESS|SF_REDIRECTABLE|SF_SRV_REUSED);
5144 s->flags &= ~(SF_ERR_MASK|SF_FINST_MASK|SF_REDISP);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]5145
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5146 s->txn->meth = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5147 http_reset_txn(s);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5148 s->txn->flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5149
5150 if (prev_status == 401 || prev_status == 407) {
5151 /* In HTTP keep-alive mode, if we receive a 401, we still have
5152 * a chance of being able to send the visitor again to the same
5153 * server over the same connection. This is required by some
5154 * broken protocols such as NTLM, and anyway whenever there is
5155 * an opportunity for sending the challenge to the proper place,
5156 * it's better to do it (at least it helps with debugging).
5157 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5158 s->txn->flags |= TX_PREFER_LAST;
Willy Tarreau387ebf82015-08-04 19:24:13 +0200[diff] [blame]5159 srv_conn->flags |= CO_FL_PRIVATE;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5160 }
5161
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5162 if (fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5163 s->si[1].flags |= SI_FL_INDEP_STR;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5164
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5165 if (fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5166 s->req.flags |= CF_NEVER_WAIT;
5167 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]5168 }
5169
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5170 /* if the request buffer is not empty, it means we're
5171 * about to process another request, so send pending
5172 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5173 * Just don't do this if the buffer is close to be full,
5174 * because the request will wait for it to flush a little
5175 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5176 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5177 if (s->req.buf->i) {
5178 if (s->res.buf->o &&
5179 !buffer_full(s->res.buf, global.tune.maxrewrite) &&
5180 bi_end(s->res.buf) <= s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)
5181 s->res.flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5182 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5183
5184 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5185 channel_auto_read(&s->req);
5186 channel_auto_close(&s->req);
5187 channel_auto_read(&s->res);
5188 channel_auto_close(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5189
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]5190 /* we're in keep-alive with an idle connection, monitor it */
Willy Tarreau4320eaa2015-08-05 11:08:30 +0200[diff] [blame]5191 if (srv_conn) {
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5192 srv = objt_server(srv_conn->target);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5193 if (!srv)
5194 si_idle_conn(&s->si[1], NULL);
5195 else if ((srv_conn->flags & CO_FL_PRIVATE) ||
5196 ((s->be->options & PR_O_REUSE_MASK) == PR_O_REUSE_NEVR))
5197 si_idle_conn(&s->si[1], &srv->priv_conns);
Willy Tarreau449d74a2015-08-05 17:16:33 +0200[diff] [blame]5198 else if (prev_flags & TX_NOT_FIRST)
5199 /* note: we check the request, not the connection, but
5200 * this is valid for strategies SAFE and AGGR, and in
5201 * case of ALWS, we don't care anyway.
5202 */
5203 si_idle_conn(&s->si[1], &srv->safe_conns);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5204 else
5205 si_idle_conn(&s->si[1], &srv->idle_conns);
Willy Tarreau4320eaa2015-08-05 11:08:30 +0200[diff] [blame]5206 }
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]5207
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]5208 s->req.analysers = strm_li(s)->analysers;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5209 s->res.analysers = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5210}
5211
5212
5213/* This function updates the request state machine according to the response
5214 * state machine and buffer flags. It returns 1 if it changes anything (flag
5215 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5216 * it is only used to find when a request/response couple is complete. Both
5217 * this function and its equivalent should loop until both return zero. It
5218 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5219 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5220int http_sync_req_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5221{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5222 struct channel *chn = &s->req;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5223 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5224 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5225 unsigned int old_state = txn->req.msg_state;
5226
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5227 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
5228 return 0;
5229
5230 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5231 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5232 * We can shut the read side unless we want to abort_on_close,
5233 * or we have a POST request. The issue with POST requests is
5234 * that some browsers still send a CRLF after the request, and
5235 * this CRLF must be read so that it does not remain in the kernel
5236 * buffers, otherwise a close could cause an RST on some systems
5237 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5238 * Note that if we're using keep-alive on the client side, we'd
5239 * rather poll now and keep the polling enabled for the whole
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5240 * stream's life than enabling/disabling it between each
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5241 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5242 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5243 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5244 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5245 !(s->be->options & PR_O_ABRT_CLOSE) &&
5246 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5247 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5248
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5249 /* if the server closes the connection, we want to immediately react
5250 * and close the socket to save packets and syscalls.
5251 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5252 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5253
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5254 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
5255 goto wait_other_side;
5256
5257 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
5258 /* The server has not finished to respond, so we
5259 * don't want to move in order not to upset it.
5260 */
5261 goto wait_other_side;
5262 }
5263
5264 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
5265 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5266 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5267 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5268 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5269 goto wait_other_side;
5270 }
5271
5272 /* When we get here, it means that both the request and the
5273 * response have finished receiving. Depending on the connection
5274 * mode, we'll have to wait for the last bytes to leave in either
5275 * direction, and sometimes for a close to be effective.
5276 */
5277
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5278 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5279 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5280 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
5281 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5282 }
5283 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5284 /* Option forceclose is set, or either side wants to close,
5285 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5286 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5287 * once both states are CLOSED.
5288 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5289 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5290 channel_shutr_now(chn);
5291 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5292 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5293 }
5294 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5295 /* The last possible modes are keep-alive and tunnel. Tunnel mode
5296 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5297 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5298 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
5299 channel_auto_read(chn);
5300 txn->req.msg_state = HTTP_MSG_TUNNEL;
5301 chn->flags |= CF_NEVER_WAIT;
5302 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5303 }
5304
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5305 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5306 /* if we've just closed an output, let's switch */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5307 s->si[1].flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5308
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5309 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5310 txn->req.msg_state = HTTP_MSG_CLOSING;
5311 goto http_msg_closing;
5312 }
5313 else {
5314 txn->req.msg_state = HTTP_MSG_CLOSED;
5315 goto http_msg_closed;
5316 }
5317 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5318 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5319 }
5320
5321 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
5322 http_msg_closing:
5323 /* nothing else to forward, just waiting for the output buffer
5324 * to be empty and for the shutw_now to take effect.
5325 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5326 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5327 txn->req.msg_state = HTTP_MSG_CLOSED;
5328 goto http_msg_closed;
5329 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5330 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5331 txn->req.msg_state = HTTP_MSG_ERROR;
5332 goto wait_other_side;
5333 }
5334 }
5335
5336 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
5337 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5338 /* see above in MSG_DONE why we only do this in these states */
5339 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5340 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5341 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]5342 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5343 goto wait_other_side;
5344 }
5345
5346 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5347 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5348}
5349
5350
5351/* This function updates the response state machine according to the request
5352 * state machine and buffer flags. It returns 1 if it changes anything (flag
5353 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5354 * it is only used to find when a request/response couple is complete. Both
5355 * this function and its equivalent should loop until both return zero. It
5356 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5357 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5358int http_sync_res_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5359{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5360 struct channel *chn = &s->res;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5361 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5362 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5363 unsigned int old_state = txn->rsp.msg_state;
5364
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5365 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
5366 return 0;
5367
5368 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
5369 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5370 * still monitor the server connection for a possible close
5371 * while the request is being uploaded, so we don't disable
5372 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5373 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5374 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5375
5376 if (txn->req.msg_state == HTTP_MSG_ERROR)
5377 goto wait_other_side;
5378
5379 if (txn->req.msg_state < HTTP_MSG_DONE) {
5380 /* The client seems to still be sending data, probably
5381 * because we got an error response during an upload.
5382 * We have the choice of either breaking the connection
5383 * or letting it pass through. Let's do the later.
5384 */
5385 goto wait_other_side;
5386 }
5387
5388 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
5389 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5390 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5391 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5392 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5393 goto wait_other_side;
5394 }
5395
5396 /* When we get here, it means that both the request and the
5397 * response have finished receiving. Depending on the connection
5398 * mode, we'll have to wait for the last bytes to leave in either
5399 * direction, and sometimes for a close to be effective.
5400 */
5401
5402 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5403 /* Server-close mode : shut read and wait for the request
5404 * side to close its output buffer. The caller will detect
5405 * when we're in DONE and the other is in CLOSED and will
5406 * catch that for the final cleanup.
5407 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5408 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
5409 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5410 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5411 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5412 /* Option forceclose is set, or either side wants to close,
5413 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5414 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5415 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5416 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5417 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5418 channel_shutr_now(chn);
5419 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5420 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5421 }
5422 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5423 /* The last possible modes are keep-alive and tunnel. Tunnel will
5424 * need to forward remaining data. Keep-alive will need to monitor
5425 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5426 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5427 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5428 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5429 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
5430 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5431 }
5432
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5433 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5434 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5435 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5436 txn->rsp.msg_state = HTTP_MSG_CLOSING;
5437 goto http_msg_closing;
5438 }
5439 else {
5440 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5441 goto http_msg_closed;
5442 }
5443 }
5444 goto wait_other_side;
5445 }
5446
5447 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
5448 http_msg_closing:
5449 /* nothing else to forward, just waiting for the output buffer
5450 * to be empty and for the shutw_now to take effect.
5451 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5452 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5453 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5454 goto http_msg_closed;
5455 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5456 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5457 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5458 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5459 if (objt_server(s->target))
5460 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5461 goto wait_other_side;
5462 }
5463 }
5464
5465 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
5466 http_msg_closed:
5467 /* drop any pending data */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5468 channel_truncate(chn);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5469 channel_auto_close(chn);
5470 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5471 goto wait_other_side;
5472 }
5473
5474 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5475 /* We force the response to leave immediately if we're waiting for the
5476 * other side, since there is no pending shutdown to push it out.
5477 */
5478 if (!channel_is_empty(chn))
5479 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5480 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5481}
5482
5483
5484/* Resync the request and response state machines. Return 1 if either state
5485 * changes.
5486 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5487int http_resync_states(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5488{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5489 struct http_txn *txn = s->txn;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5490 int old_req_state = txn->req.msg_state;
5491 int old_res_state = txn->rsp.msg_state;
5492
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5493 http_sync_req_state(s);
5494 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5495 if (!http_sync_res_state(s))
5496 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5497 if (!http_sync_req_state(s))
5498 break;
5499 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]5500
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5501 /* OK, both state machines agree on a compatible state.
5502 * There are a few cases we're interested in :
5503 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
5504 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
5505 * directions, so let's simply disable both analysers.
5506 * - HTTP_MSG_CLOSED on the response only means we must abort the
5507 * request.
5508 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
5509 * with server-close mode means we've completed one request and we
5510 * must re-initialize the server connection.
5511 */
5512
5513 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
5514 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
5515 (txn->req.msg_state == HTTP_MSG_CLOSED &&
5516 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5517 s->req.analysers = 0;
5518 channel_auto_close(&s->req);
5519 channel_auto_read(&s->req);
5520 s->res.analysers = 0;
5521 channel_auto_close(&s->res);
5522 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5523 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5524 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5525 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->res.flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]5526 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5527 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5528 s->res.analysers = 0;
5529 channel_auto_close(&s->res);
5530 channel_auto_read(&s->res);
5531 s->req.analysers = 0;
5532 channel_abort(&s->req);
5533 channel_auto_close(&s->req);
5534 channel_auto_read(&s->req);
5535 channel_truncate(&s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5536 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5537 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
5538 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5539 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5540 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
5541 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
5542 /* server-close/keep-alive: terminate this transaction,
5543 * possibly killing the server connection and reinitialize
5544 * a fresh-new transaction.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5545 */
5546 http_end_txn_clean_session(s);
5547 }
5548
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5549 return txn->req.msg_state != old_req_state ||
5550 txn->rsp.msg_state != old_res_state;
5551}
5552
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5553/* This function is an analyser which forwards request body (including chunk
5554 * sizes if any). It is called as soon as we must forward, even if we forward
5555 * zero byte. The only situation where it must not be called is when we're in
5556 * tunnel mode and we want to forward till the close. It's used both to forward
5557 * remaining data and to resync after end of body. It expects the msg_state to
5558 * 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]5559 * 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]5560 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5561 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5562 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5563int http_request_forward_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5564{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5565 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5566 struct http_txn *txn = s->txn;
5567 struct http_msg *msg = &s->txn->req;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5568
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5569 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5570 return 0;
5571
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5572 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]5573 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5574 /* Output closed while we were sending data. We must abort and
5575 * wake the other side up.
5576 */
5577 msg->msg_state = HTTP_MSG_ERROR;
5578 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5579 return 1;
5580 }
5581
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5582 /* Note that we don't have to send 100-continue back because we don't
5583 * need the data to complete our job, and it's up to the server to
5584 * decide whether to return 100, 417 or anything else in return of
5585 * an "Expect: 100-continue" header.
5586 */
5587
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]5588 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5589 /* we have msg->sov which points to the first byte of message
5590 * body, and req->buf.p still points to the beginning of the
5591 * message. We forward the headers now, as we don't need them
5592 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5593 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5594 b_adv(req->buf, msg->sov);
5595 msg->next -= msg->sov;
5596 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5597
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5598 /* The previous analysers guarantee that the state is somewhere
5599 * between MSG_BODY and the first MSG_DATA. So msg->sol and
5600 * msg->next are always correct.
5601 */
5602 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
5603 if (msg->flags & HTTP_MSGF_TE_CHNK)
5604 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
5605 else
5606 msg->msg_state = HTTP_MSG_DATA;
5607 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5608 }
5609
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5610 /* Some post-connect processing might want us to refrain from starting to
5611 * forward data. Currently, the only reason for this is "balance url_param"
5612 * whichs need to parse/process the request after we've enabled forwarding.
5613 */
5614 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5615 if (!(s->res.flags & CF_READ_ATTACHED)) {
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5616 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +0200[diff] [blame]5617 req->flags |= CF_WAKE_CONNECT;
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5618 goto missing_data;
5619 }
5620 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5621 }
5622
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5623 /* in most states, we should abort in case of early close */
5624 channel_auto_close(req);
5625
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5626 if (req->to_forward) {
5627 /* We can't process the buffer's contents yet */
5628 req->flags |= CF_WAKE_WRITE;
5629 goto missing_data;
5630 }
5631
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5632 while (1) {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5633 if (msg->msg_state == HTTP_MSG_DATA) {
5634 /* must still forward */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5635 /* we may have some pending data starting at req->buf->p */
5636 if (msg->chunk_len > req->buf->i - msg->next) {
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5637 req->flags |= CF_WAKE_WRITE;
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5638 goto missing_data;
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5639 }
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5640 msg->next += msg->chunk_len;
5641 msg->chunk_len = 0;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5642
5643 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5644 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5645 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5646 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5647 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5648 }
5649 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5650 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5651 * set ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5652 * TRAILERS state.
5653 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5654 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5655
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5656 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5657 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5658 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5659 stream_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5660 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5661 http_capture_bad_message(&sess->fe->invalid_req, s, msg, HTTP_MSG_CHUNK_SIZE, s->be);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5662 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5663 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5664 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5665 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5666 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5667 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5668 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5669
5670 if (ret == 0)
5671 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5672 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5673 stream_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5674 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5675 http_capture_bad_message(&sess->fe->invalid_req, s, msg, HTTP_MSG_CHUNK_CRLF, s->be);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5676 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5677 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5678 /* we're in MSG_CHUNK_SIZE now */
5679 }
5680 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5681 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5682
5683 if (ret == 0)
5684 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5685 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5686 stream_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5687 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5688 http_capture_bad_message(&sess->fe->invalid_req, s, msg, HTTP_MSG_TRAILERS, s->be);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5689 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5690 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5691 /* we're in HTTP_MSG_DONE now */
5692 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5693 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5694 int old_state = msg->msg_state;
5695
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5696 /* other states, DONE...TUNNEL */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5697
5698 /* we may have some pending data starting at req->buf->p
5699 * such as last chunk of data or trailers.
5700 */
5701 b_adv(req->buf, msg->next);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5702 if (unlikely(!(s->req.flags & CF_WROTE_DATA)))
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]5703 msg->sov -= msg->next;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5704 msg->next = 0;
5705
Willy Tarreaubbfb6c42015-05-11 18:30:33 +0200[diff] [blame]5706 /* we don't want to forward closes on DONE except in
5707 * tunnel mode.
5708 */
5709 if ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5710 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5711 if (http_resync_states(s)) {
5712 /* some state changes occurred, maybe the analyser
5713 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]5714 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5715 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5716 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5717 /* request errors are most likely due to
5718 * the server aborting the transfer.
5719 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5720 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5721 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5722 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5723 http_capture_bad_message(&sess->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5724 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5725 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5726 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5727 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5728
5729 /* If "option abortonclose" is set on the backend, we
5730 * want to monitor the client's connection and forward
5731 * any shutdown notification to the server, which will
5732 * decide whether to close or to go on processing the
Willy Tarreaubbfb6c42015-05-11 18:30:33 +0200[diff] [blame]5733 * request. We only do that in tunnel mode, and not in
5734 * other modes since it can be abused to exhaust source
5735 * ports.
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5736 */
5737 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5738 channel_auto_read(req);
Willy Tarreaubbfb6c42015-05-11 18:30:33 +0200[diff] [blame]5739 if ((req->flags & (CF_SHUTR|CF_READ_NULL)) &&
5740 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN))
5741 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5742 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5743 }
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5744 else if (s->txn->meth == HTTP_METH_POST) {
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5745 /* POST requests may require to read extra CRLF
5746 * sent by broken browsers and which could cause
5747 * an RST to be sent upon close on some systems
5748 * (eg: Linux).
5749 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5750 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5751 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5752
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5753 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5754 }
5755 }
5756
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5757 missing_data:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5758 /* we may have some pending data starting at req->buf->p */
5759 b_adv(req->buf, msg->next);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5760 if (unlikely(!(s->req.flags & CF_WROTE_DATA)))
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]5761 msg->sov -= msg->next + MIN(msg->chunk_len, req->buf->i);
5762
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5763 msg->next = 0;
5764 msg->chunk_len -= channel_forward(req, msg->chunk_len);
5765
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5766 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5767 if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5768 if (!(s->flags & SF_ERR_MASK))
5769 s->flags |= SF_ERR_CLICL;
5770 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5771 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5772 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5773 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5774 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5775 }
5776
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5777 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5778 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5779 if (objt_server(s->target))
5780 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5781
5782 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5783 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5784
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5785 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5786 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5787 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5788
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5789 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5790 * 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]5791 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5792 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5793 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5794
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5795 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5796 * 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]5797 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5798 * modes are already handled by the stream sock layer. We must not do
5799 * this in content-length mode because it could present the MSG_MORE
5800 * flag with the last block of forwarded data, which would cause an
5801 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5802 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5803 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5804 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5805
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5806 return 0;
5807
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5808 return_bad_req: /* let's centralize all bad requests */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5809 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5810 if (sess->listener->counters)
5811 sess->listener->counters->failed_req++;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5812
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5813 return_bad_req_stats_ok:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5814 /* we may have some pending data starting at req->buf->p */
5815 b_adv(req->buf, msg->next);
5816 msg->next = 0;
5817
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5818 txn->req.msg_state = HTTP_MSG_ERROR;
5819 if (txn->status) {
5820 /* Note: we don't send any error if some data were already sent */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5821 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5822 } else {
5823 txn->status = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5824 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5825 }
5826 req->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5827 s->res.analysers = 0; /* we're in data phase, we want to abort both directions */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5828
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5829 if (!(s->flags & SF_ERR_MASK))
5830 s->flags |= SF_ERR_PRXCOND;
5831 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5832 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5833 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5834 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5835 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5836 }
5837 return 0;
5838
5839 aborted_xfer:
5840 txn->req.msg_state = HTTP_MSG_ERROR;
5841 if (txn->status) {
5842 /* Note: we don't send any error if some data were already sent */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5843 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5844 } else {
5845 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5846 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5847 }
5848 req->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5849 s->res.analysers = 0; /* we're in data phase, we want to abort both directions */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5850
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5851 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5852 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5853 if (objt_server(s->target))
5854 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5855
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5856 if (!(s->flags & SF_ERR_MASK))
5857 s->flags |= SF_ERR_SRVCL;
5858 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5859 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5860 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5861 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5862 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5863 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5864 return 0;
5865}
5866
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5867/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5868 * processing can continue on next analysers, or zero if it either needs more
5869 * data or wants to immediately abort the response (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5870 * 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]5871 * when it has nothing left to do, and may remove any analyser when it wants to
5872 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5873 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5874int http_wait_for_response(struct stream *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5875{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5876 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5877 struct http_txn *txn = s->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5878 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5879 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5880 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5881 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5882 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5883
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5884 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]5885 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5886 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5887 rep,
5888 rep->rex, rep->wex,
5889 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5890 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5891 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5892
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5893 /*
5894 * Now parse the partial (or complete) lines.
5895 * We will check the response syntax, and also join multi-line
5896 * headers. An index of all the lines will be elaborated while
5897 * parsing.
5898 *
5899 * For the parsing, we use a 28 states FSM.
5900 *
5901 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5902 * rep->buf->p = beginning of response
5903 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5904 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5905 * msg->eol = end of current header or line (LF or CRLF)
5906 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5907 */
5908
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5909 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5910 /* There's a protected area at the end of the buffer for rewriting
5911 * purposes. We don't want to start to parse the request if the
5912 * protected area is affected, because we may have to move processed
5913 * data later, which is much more complicated.
5914 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5915 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]5916 if (unlikely(!channel_is_rewritable(rep))) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5917 /* some data has still not left the buffer, wake us once that's done */
5918 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5919 goto abort_response;
5920 channel_dont_close(rep);
5921 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5922 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5923 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5924 }
5925
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5926 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5927 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5928 buffer_slow_realign(rep->buf);
5929
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5930 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5931 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5932 }
5933
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5934 /* 1: we might have to print this header in debug mode */
5935 if (unlikely((global.mode & MODE_DEBUG) &&
5936 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]5937 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5938 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5939
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5940 sol = rep->buf->p;
5941 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5942 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5943
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5944 sol += hdr_idx_first_pos(&txn->hdr_idx);
5945 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5946
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5947 while (cur_idx) {
5948 eol = sol + txn->hdr_idx.v[cur_idx].len;
5949 debug_hdr("srvhdr", s, sol, eol);
5950 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5951 cur_idx = txn->hdr_idx.v[cur_idx].next;
5952 }
5953 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5954
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5955 /*
5956 * Now we quickly check if we have found a full valid response.
5957 * If not so, we check the FD and buffer states before leaving.
5958 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5959 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5960 * responses are checked first.
5961 *
5962 * Depending on whether the client is still there or not, we
5963 * may send an error response back or not. Note that normally
5964 * we should only check for HTTP status there, and check I/O
5965 * errors somewhere else.
5966 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5967
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5968 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5969 /* Invalid response */
5970 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5971 /* we detected a parsing error. We want to archive this response
5972 * in the dedicated proxy area for later troubleshooting.
5973 */
5974 hdr_response_bad:
5975 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5976 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]5977
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5978 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5979 if (objt_server(s->target)) {
5980 objt_server(s->target)->counters.failed_resp++;
5981 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5982 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5983 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5984 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5985 rep->analysers = 0;
5986 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5987 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5988 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5989 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5990
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5991 if (!(s->flags & SF_ERR_MASK))
5992 s->flags |= SF_ERR_PRXCOND;
5993 if (!(s->flags & SF_FINST_MASK))
5994 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5995
5996 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5997 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5998
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5999 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6000 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]6001 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6002 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6003 goto hdr_response_bad;
6004 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6005
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6006 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6007 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6008 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6009 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]6010 else if (txn->flags & TX_NOT_FIRST)
6011 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]6012
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6013 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6014 if (objt_server(s->target)) {
6015 objt_server(s->target)->counters.failed_resp++;
6016 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6017 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]6018
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6019 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6020 rep->analysers = 0;
6021 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6022 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6023 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6024 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]6025
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6026 if (!(s->flags & SF_ERR_MASK))
6027 s->flags |= SF_ERR_SRVCL;
6028 if (!(s->flags & SF_FINST_MASK))
6029 s->flags |= SF_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]6030 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6031 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6032
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +0200[diff] [blame]6033 /* read timeout : return a 504 to the client. */
6034 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6035 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6036 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]6037 else if (txn->flags & TX_NOT_FIRST)
6038 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6039
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6040 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6041 if (objt_server(s->target)) {
6042 objt_server(s->target)->counters.failed_resp++;
6043 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6044 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6045
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6046 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6047 rep->analysers = 0;
6048 txn->status = 504;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6049 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6050 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6051 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]6052
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6053 if (!(s->flags & SF_ERR_MASK))
6054 s->flags |= SF_ERR_SRVTO;
6055 if (!(s->flags & SF_FINST_MASK))
6056 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6057 return 0;
6058 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]6059
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6060 /* client abort with an abortonclose */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6061 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]6062 sess->fe->fe_counters.cli_aborts++;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6063 s->be->be_counters.cli_aborts++;
6064 if (objt_server(s->target))
6065 objt_server(s->target)->counters.cli_aborts++;
6066
6067 rep->analysers = 0;
6068 channel_auto_close(rep);
6069
6070 txn->status = 400;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6071 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6072 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6073
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6074 if (!(s->flags & SF_ERR_MASK))
6075 s->flags |= SF_ERR_CLICL;
6076 if (!(s->flags & SF_FINST_MASK))
6077 s->flags |= SF_FINST_H;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6078
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6079 /* process_stream() will take care of the error */
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6080 return 0;
6081 }
6082
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]6083 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6084 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]6085 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6086 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]6087 else if (txn->flags & TX_NOT_FIRST)
6088 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6089
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6090 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6091 if (objt_server(s->target)) {
6092 objt_server(s->target)->counters.failed_resp++;
6093 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6094 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6095
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6096 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6097 rep->analysers = 0;
6098 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6099 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6100 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6101 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6102
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6103 if (!(s->flags & SF_ERR_MASK))
6104 s->flags |= SF_ERR_SRVCL;
6105 if (!(s->flags & SF_FINST_MASK))
6106 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6107 return 0;
6108 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]6109
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6110 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6111 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6112 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6113 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]6114 else if (txn->flags & TX_NOT_FIRST)
6115 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]6116
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6117 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6118 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6119 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6120
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6121 if (!(s->flags & SF_ERR_MASK))
6122 s->flags |= SF_ERR_CLICL;
6123 if (!(s->flags & SF_FINST_MASK))
6124 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6125
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6126 /* process_stream() will take care of the error */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6127 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6128 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6129
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6130 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]6131 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6132 return 0;
6133 }
6134
6135 /* More interesting part now : we know that we have a complete
6136 * response which at least looks like HTTP. We have an indicator
6137 * of each header's length, so we can parse them quickly.
6138 */
6139
6140 if (unlikely(msg->err_pos >= 0))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6141 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]6142
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6143 /*
6144 * 1: get the status code
6145 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6146 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6147 if (n < 1 || n > 5)
6148 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6149 /* when the client triggers a 4xx from the server, it's most often due
6150 * to a missing object or permission. These events should be tracked
6151 * because if they happen often, it may indicate a brute force or a
6152 * vulnerability scan.
6153 */
6154 if (n == 4)
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6155 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6156
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6157 if (objt_server(s->target))
6158 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6159
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]6160 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
6161 * exactly one digit "." one digit. This check may be disabled using
6162 * option accept-invalid-http-response.
6163 */
6164 if (!(s->be->options2 & PR_O2_RSPBUG_OK)) {
6165 if (msg->sl.st.v_l != 8) {
6166 msg->err_pos = 0;
6167 goto hdr_response_bad;
6168 }
6169
6170 if (rep->buf->p[4] != '/' ||
6171 !isdigit((unsigned char)rep->buf->p[5]) ||
6172 rep->buf->p[6] != '.' ||
6173 !isdigit((unsigned char)rep->buf->p[7])) {
6174 msg->err_pos = 4;
6175 goto hdr_response_bad;
6176 }
6177 }
6178
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6179 /* check if the response is HTTP/1.1 or above */
6180 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6181 ((rep->buf->p[5] > '1') ||
6182 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6183 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6184
6185 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]6186 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]6187
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6188 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6189 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6190
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6191 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]6192
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]6193 /* Adjust server's health based on status code. Note: status codes 501
6194 * and 505 are triggered on demand by client request, so we must not
6195 * count them as server failures.
6196 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6197 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6198 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6199 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6200 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6201 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6202 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6203
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6204 /*
6205 * 2: check for cacheability.
6206 */
6207
6208 switch (txn->status) {
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]6209 case 100:
6210 /*
6211 * We may be facing a 100-continue response, in which case this
6212 * is not the right response, and we're waiting for the next one.
6213 * Let's allow this response to go to the client and wait for the
6214 * next one.
6215 */
6216 hdr_idx_init(&txn->hdr_idx);
6217 msg->next -= channel_forward(rep, msg->next);
6218 msg->msg_state = HTTP_MSG_RPBEFORE;
6219 txn->status = 0;
6220 s->logs.t_data = -1; /* was not a response yet */
6221 goto next_one;
6222
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6223 case 200:
6224 case 203:
6225 case 206:
6226 case 300:
6227 case 301:
6228 case 410:
6229 /* RFC2616 @13.4:
6230 * "A response received with a status code of
6231 * 200, 203, 206, 300, 301 or 410 MAY be stored
6232 * by a cache (...) unless a cache-control
6233 * directive prohibits caching."
6234 *
6235 * RFC2616 @9.5: POST method :
6236 * "Responses to this method are not cacheable,
6237 * unless the response includes appropriate
6238 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6239 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6240 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6241 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6242 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
6243 break;
6244 default:
6245 break;
6246 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6247
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6248 /*
6249 * 3: we may need to capture headers
6250 */
6251 s->logs.logwait &= ~LW_RESP;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6252 if (unlikely((s->logs.logwait & LW_RSPHDR) && s->res_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6253 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6254 s->res_cap, sess->fe->rsp_cap);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6255
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6256 /* 4: determine the transfer-length according to RFC2616 #4.4, updated
6257 * by RFC7230#3.3.3 :
6258 *
6259 * The length of a message body is determined by one of the following
6260 * (in order of precedence):
6261 *
6262 * 1. Any response to a HEAD request and any response with a 1xx
6263 * (Informational), 204 (No Content), or 304 (Not Modified) status
6264 * code is always terminated by the first empty line after the
6265 * header fields, regardless of the header fields present in the
6266 * message, and thus cannot contain a message body.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6267 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6268 * 2. Any 2xx (Successful) response to a CONNECT request implies that
6269 * the connection will become a tunnel immediately after the empty
6270 * line that concludes the header fields. A client MUST ignore any
6271 * Content-Length or Transfer-Encoding header fields received in
6272 * such a message.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6273 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6274 * 3. If a Transfer-Encoding header field is present and the chunked
6275 * transfer coding (Section 4.1) is the final encoding, the message
6276 * body length is determined by reading and decoding the chunked
6277 * data until the transfer coding indicates the data is complete.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6278 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6279 * If a Transfer-Encoding header field is present in a response and
6280 * the chunked transfer coding is not the final encoding, the
6281 * message body length is determined by reading the connection until
6282 * it is closed by the server. If a Transfer-Encoding header field
6283 * is present in a request and the chunked transfer coding is not
6284 * the final encoding, the message body length cannot be determined
6285 * reliably; the server MUST respond with the 400 (Bad Request)
6286 * status code and then close the connection.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6287 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6288 * If a message is received with both a Transfer-Encoding and a
6289 * Content-Length header field, the Transfer-Encoding overrides the
6290 * Content-Length. Such a message might indicate an attempt to
6291 * perform request smuggling (Section 9.5) or response splitting
6292 * (Section 9.4) and ought to be handled as an error. A sender MUST
6293 * remove the received Content-Length field prior to forwarding such
6294 * a message downstream.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6295 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6296 * 4. If a message is received without Transfer-Encoding and with
6297 * either multiple Content-Length header fields having differing
6298 * field-values or a single Content-Length header field having an
6299 * invalid value, then the message framing is invalid and the
6300 * recipient MUST treat it as an unrecoverable error. If this is a
6301 * request message, the server MUST respond with a 400 (Bad Request)
6302 * status code and then close the connection. If this is a response
6303 * message received by a proxy, the proxy MUST close the connection
6304 * to the server, discard the received response, and send a 502 (Bad
6305 * Gateway) response to the client. If this is a response message
6306 * received by a user agent, the user agent MUST close the
6307 * connection to the server and discard the received response.
6308 *
6309 * 5. If a valid Content-Length header field is present without
6310 * Transfer-Encoding, its decimal value defines the expected message
6311 * body length in octets. If the sender closes the connection or
6312 * the recipient times out before the indicated number of octets are
6313 * received, the recipient MUST consider the message to be
6314 * incomplete and close the connection.
6315 *
6316 * 6. If this is a request message and none of the above are true, then
6317 * the message body length is zero (no message body is present).
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6318 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6319 * 7. Otherwise, this is a response message without a declared message
6320 * body length, so the message body length is determined by the
6321 * number of octets received prior to the server closing the
6322 * connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6323 */
6324
6325 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6326 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6327 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6328 * FIXME: should we parse anyway and return an error on chunked encoding ?
6329 */
6330 if (txn->meth == HTTP_METH_HEAD ||
6331 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6332 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6333 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]6334 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6335 goto skip_content_length;
6336 }
6337
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6338 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6339 ctx.idx = 0;
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]6340 while (http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6341 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6342 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
6343 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6344 /* bad transfer-encoding (chunked followed by something else) */
6345 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6346 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6347 break;
6348 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6349 }
6350
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6351 /* Chunked responses must have their content-length removed */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6352 ctx.idx = 0;
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6353 if (use_close_only || (msg->flags & HTTP_MSGF_TE_CHNK)) {
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6354 while (http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx))
6355 http_remove_header2(msg, &txn->hdr_idx, &ctx);
6356 }
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6357 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]6358 signed long long cl;
6359
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6360 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6361 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6362 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6363 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6364
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6365 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6366 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6367 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6368 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6369
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6370 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6371 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6372 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6373 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6374
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6375 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6376 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6377 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6378 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6379
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6380 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6381 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6382 }
6383
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6384 if (sess->fe->comp || s->be->comp)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6385 select_compression_response_header(s, rep->buf);
6386
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6387skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6388 /* Now we have to check if we need to modify the Connection header.
6389 * This is more difficult on the response than it is on the request,
6390 * because we can have two different HTTP versions and we don't know
6391 * how the client will interprete a response. For instance, let's say
6392 * that the client sends a keep-alive request in HTTP/1.0 and gets an
6393 * HTTP/1.1 response without any header. Maybe it will bound itself to
6394 * HTTP/1.0 because it only knows about it, and will consider the lack
6395 * of header as a close, or maybe it knows HTTP/1.1 and can consider
6396 * the lack of header as a keep-alive. Thus we will use two flags
6397 * indicating how a request MAY be understood by the client. In case
6398 * of multiple possibilities, we'll fix the header to be explicit. If
6399 * ambiguous cases such as both close and keepalive are seen, then we
6400 * will fall back to explicit close. Note that we won't take risks with
6401 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6402 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6403 */
6404
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6405 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
6406 txn->status == 101)) {
6407 /* Either we've established an explicit tunnel, or we're
6408 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6409 * to understand the next protocols. We have to switch to tunnel
6410 * mode, so that we transfer the request and responses then let
6411 * this protocol pass unmodified. When we later implement specific
6412 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6413 * header which contains information about that protocol for
6414 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6415 */
6416 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
6417 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6418 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
6419 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6420 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6421 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6422 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6423
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6424 /* this situation happens when combining pretend-keepalive with httpclose. */
6425 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6426 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6427 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6428 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
6429
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6430 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6431 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6432 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
6433 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6434
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6435 /* now adjust header transformations depending on current state */
6436 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
6437 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
6438 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6439 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6440 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6441 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6442 else { /* SCL / KAL */
6443 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6444 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6445 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6446 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6447
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6448 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6449 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6450
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6451 /* Some keep-alive responses are converted to Server-close if
6452 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6453 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6454 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
6455 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6456 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6457 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6458 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6459 }
6460
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6461 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6462 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6463
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6464 /* end of job, return OK */
6465 rep->analysers &= ~an_bit;
6466 rep->analyse_exp = TICK_ETERNITY;
6467 channel_auto_close(rep);
6468 return 1;
6469
6470 abort_keep_alive:
6471 /* A keep-alive request to the server failed on a network error.
6472 * The client is required to retry. We need to close without returning
6473 * any other information so that the client retries.
6474 */
6475 txn->status = 0;
6476 rep->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6477 s->req.analysers = 0;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6478 channel_auto_close(rep);
6479 s->logs.logwait = 0;
6480 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6481 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6482 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6483 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6484 return 0;
6485}
6486
6487/* This function performs all the processing enabled for the current response.
6488 * It normally returns 1 unless it wants to break. It relies on buffers flags,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6489 * and updates s->res.analysers. It might make sense to explode it into several
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6490 * other functions. It works like process_request (see indications above).
6491 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6492int 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]6493{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6494 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6495 struct http_txn *txn = s->txn;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6496 struct http_msg *msg = &txn->rsp;
6497 struct proxy *cur_proxy;
6498 struct cond_wordlist *wl;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]6499 enum rule_result ret = HTTP_RULE_RES_CONT;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6500
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6501 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]6502 now_ms, __FUNCTION__,
6503 s,
6504 rep,
6505 rep->rex, rep->wex,
6506 rep->flags,
6507 rep->buf->i,
6508 rep->analysers);
6509
6510 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
6511 return 0;
6512
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6513 /* The stats applet needs to adjust the Connection header but we don't
6514 * apply any filter there.
6515 */
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6516 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
6517 rep->analysers &= ~an_bit;
6518 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6519 goto skip_filters;
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6520 }
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6521
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6522 /*
6523 * We will have to evaluate the filters.
6524 * As opposed to version 1.2, now they will be evaluated in the
6525 * filters order and not in the header order. This means that
6526 * each filter has to be validated among all headers.
6527 *
6528 * Filters are tried with ->be first, then with ->fe if it is
6529 * different from ->be.
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6530 *
6531 * Maybe we are in resume condiion. In this case I choose the
6532 * "struct proxy" which contains the rule list matching the resume
6533 * pointer. If none of theses "struct proxy" match, I initialise
6534 * the process with the first one.
6535 *
6536 * In fact, I check only correspondance betwwen the current list
6537 * pointer and the ->fe rule list. If it doesn't match, I initialize
6538 * the loop with the ->be.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6539 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6540 if (s->current_rule_list == &sess->fe->http_res_rules)
6541 cur_proxy = sess->fe;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6542 else
6543 cur_proxy = s->be;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6544 while (1) {
6545 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6546
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6547 /* evaluate http-response rules */
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6548 if (ret == HTTP_RULE_RES_CONT) {
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]6549 ret = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, s);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]6550
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6551 if (ret == HTTP_RULE_RES_BADREQ)
6552 goto return_srv_prx_502;
6553
6554 if (ret == HTTP_RULE_RES_DONE) {
6555 rep->analysers &= ~an_bit;
6556 rep->analyse_exp = TICK_ETERNITY;
6557 return 1;
6558 }
6559 }
6560
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6561 /* we need to be called again. */
6562 if (ret == HTTP_RULE_RES_YIELD) {
6563 channel_dont_close(rep);
6564 return 0;
6565 }
6566
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6567 /* try headers filters */
6568 if (rule_set->rsp_exp != NULL) {
6569 if (apply_filters_to_response(s, rep, rule_set) < 0) {
6570 return_bad_resp:
6571 if (objt_server(s->target)) {
6572 objt_server(s->target)->counters.failed_resp++;
6573 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6574 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6575 s->be->be_counters.failed_resp++;
6576 return_srv_prx_502:
6577 rep->analysers = 0;
6578 txn->status = 502;
6579 s->logs.t_data = -1; /* was not a valid response */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6580 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6581 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6582 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6583 if (!(s->flags & SF_ERR_MASK))
6584 s->flags |= SF_ERR_PRXCOND;
6585 if (!(s->flags & SF_FINST_MASK))
6586 s->flags |= SF_FINST_H;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6587 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6588 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6589 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6590
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6591 /* has the response been denied ? */
6592 if (txn->flags & TX_SVDENY) {
6593 if (objt_server(s->target))
6594 objt_server(s->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6595
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6596 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6597 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6598 if (sess->listener->counters)
6599 sess->listener->counters->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6600
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6601 goto return_srv_prx_502;
6602 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]6603
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6604 /* add response headers from the rule sets in the same order */
6605 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6606 if (txn->status < 200 && txn->status != 101)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6607 break;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6608 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]6609 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]6610 ret = acl_pass(ret);
6611 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
6612 ret = !ret;
6613 if (!ret)
6614 continue;
6615 }
6616 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
6617 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6618 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6619
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6620 /* check whether we're already working on the frontend */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6621 if (cur_proxy == sess->fe)
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6622 break;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6623 cur_proxy = sess->fe;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6624 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6625
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6626 /* After this point, this anayzer can't return yield, so we can
6627 * remove the bit corresponding to this analyzer from the list.
6628 *
6629 * Note that the intermediate returns and goto found previously
6630 * reset the analyzers.
6631 */
6632 rep->analysers &= ~an_bit;
6633 rep->analyse_exp = TICK_ETERNITY;
6634
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6635 /* OK that's all we can do for 1xx responses */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6636 if (unlikely(txn->status < 200 && txn->status != 101))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6637 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6638
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6639 /*
6640 * Now check for a server cookie.
6641 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6642 if (s->be->cookie_name || s->be->appsession_name || sess->fe->capture_name ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6643 (s->be->options & PR_O_CHK_CACHE))
6644 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6645
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6646 /*
6647 * Check for cache-control or pragma headers if required.
6648 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6649 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]6650 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6651
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6652 /*
6653 * Add server cookie in the response if needed
6654 */
6655 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
6656 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6657 (!(s->flags & SF_DIRECT) ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6658 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
6659 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
6660 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
6661 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
6662 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6663 !(s->flags & SF_IGNORE_PRST)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6664 /* the server is known, it's not the one the client requested, or the
6665 * cookie's last seen date needs to be refreshed. We have to
6666 * insert a set-cookie here, except if we want to insert only on POST
6667 * requests and this one isn't. Note that servers which don't have cookies
6668 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6669 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6670 if (!objt_server(s->target)->cookie) {
6671 chunk_printf(&trash,
6672 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
6673 s->be->cookie_name);
6674 }
6675 else {
6676 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]6677
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6678 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
6679 /* emit last_date, which is mandatory */
6680 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6681 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6682 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6683
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6684 if (s->be->cookie_maxlife) {
6685 /* emit first_date, which is either the original one or
6686 * the current date.
6687 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6688 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6689 s30tob64(txn->cookie_first_date ?
6690 txn->cookie_first_date >> 2 :
6691 (date.tv_sec+3) >> 2, trash.str + trash.len);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6692 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6693 }
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6694 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6695 chunk_appendf(&trash, "; path=/");
6696 }
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6697
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6698 if (s->be->cookie_domain)
6699 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6700
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6701 if (s->be->ck_opts & PR_CK_HTTPONLY)
6702 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6703
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6704 if (s->be->ck_opts & PR_CK_SECURE)
6705 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6706
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6707 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
6708 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6709
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6710 txn->flags &= ~TX_SCK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6711 if (objt_server(s->target)->cookie && (s->flags & SF_DIRECT))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6712 /* the server did not change, only the date was updated */
6713 txn->flags |= TX_SCK_UPDATED;
6714 else
6715 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6716
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6717 /* Here, we will tell an eventual cache on the client side that we don't
6718 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6719 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6720 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6721 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6722 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6723
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6724 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6725
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6726 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
6727 "Cache-control: private", 22) < 0))
6728 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6729 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6730 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6731
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6732 /*
6733 * Check if result will be cacheable with a cookie.
6734 * We'll block the response if security checks have caught
6735 * nasty things such as a cacheable cookie.
6736 */
6737 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6738 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
6739 (s->be->options & PR_O_CHK_CACHE)) {
6740 /* we're in presence of a cacheable response containing
6741 * a set-cookie header. We'll block it as requested by
6742 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6743 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6744 if (objt_server(s->target))
6745 objt_server(s->target)->counters.failed_secu++;
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6746
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6747 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6748 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6749 if (sess->listener->counters)
6750 sess->listener->counters->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6751
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6752 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
6753 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6754 send_log(s->be, LOG_ALERT,
6755 "Blocking cacheable cookie in response from instance %s, server %s.\n",
6756 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6757 goto return_srv_prx_502;
6758 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6759
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6760 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6761 /*
6762 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
6763 * If an "Upgrade" token is found, the header is left untouched in order
6764 * 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]6765 * if anything but "Upgrade" is present in the Connection header. We don't
6766 * want to touch any 101 response either since it's switching to another
6767 * protocol.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6768 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6769 if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) &&
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6770 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6771 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6772 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
6773 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6774
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6775 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6776 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6777 /* we want a keep-alive response here. Keep-alive header
6778 * required if either side is not 1.1.
6779 */
6780 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
6781 want_flags |= TX_CON_KAL_SET;
6782 }
6783 else {
6784 /* we want a close response here. Close header required if
6785 * the server is 1.1, regardless of the client.
6786 */
6787 if (msg->flags & HTTP_MSGF_VER_11)
6788 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6789 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6790
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6791 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
6792 http_change_connection_header(txn, msg, want_flags);
6793 }
6794
6795 skip_header_mangling:
6796 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
6797 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
6798 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6799
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6800 /* if the user wants to log as soon as possible, without counting
6801 * bytes from the server, then this is the right moment. We have
6802 * to temporarily assign bytes_out to log what we currently have.
6803 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6804 if (!LIST_ISEMPTY(&sess->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6805 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
6806 s->logs.bytes_out = txn->rsp.eoh;
6807 s->do_log(s);
6808 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6809 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6810 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6811}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6812
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6813/* This function is an analyser which forwards response body (including chunk
6814 * sizes if any). It is called as soon as we must forward, even if we forward
6815 * zero byte. The only situation where it must not be called is when we're in
6816 * tunnel mode and we want to forward till the close. It's used both to forward
6817 * remaining data and to resync after end of body. It expects the msg_state to
6818 * 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]6819 * 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]6820 *
6821 * It is capable of compressing response data both in content-length mode and
6822 * in chunked mode. The state machines follows different flows depending on
6823 * whether content-length and chunked modes are used, since there are no
6824 * trailers in content-length :
6825 *
6826 * chk-mode cl-mode
6827 * ,----- BODY -----.
6828 * / \
6829 * V size > 0 V chk-mode
6830 * .--> SIZE -------------> DATA -------------> CRLF
6831 * | | size == 0 | last byte |
6832 * | v final crlf v inspected |
6833 * | TRAILERS -----------> DONE |
6834 * | |
6835 * `----------------------------------------------'
6836 *
6837 * Compression only happens in the DATA state, and must be flushed in final
6838 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
6839 * is performed at once on final states for all bytes parsed, or when leaving
6840 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6841 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6842int http_response_forward_body(struct stream *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6843{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6844 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6845 struct http_txn *txn = s->txn;
6846 struct http_msg *msg = &s->txn->rsp;
Willy Tarreauf2f7d6b2014-11-24 11:55:08 +0100[diff] [blame]6847 static struct buffer *tmpbuf = &buf_empty;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6848 int compressing = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6849 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6850
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6851 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6852 return 0;
6853
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6854 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]6855 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6856 !s->req.analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6857 /* Output closed while we were sending data. We must abort and
6858 * wake the other side up.
6859 */
6860 msg->msg_state = HTTP_MSG_ERROR;
6861 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6862 return 1;
6863 }
6864
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6865 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6866 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6867
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]6868 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6869 /* we have msg->sov which points to the first byte of message
6870 * body, and res->buf.p still points to the beginning of the
6871 * message. We forward the headers now, as we don't need them
6872 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6873 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6874 b_adv(res->buf, msg->sov);
6875 msg->next -= msg->sov;
6876 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6877
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6878 /* The previous analysers guarantee that the state is somewhere
6879 * between MSG_BODY and the first MSG_DATA. So msg->sol and
6880 * msg->next are always correct.
6881 */
6882 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
6883 if (msg->flags & HTTP_MSGF_TE_CHNK)
6884 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
6885 else
6886 msg->msg_state = HTTP_MSG_DATA;
6887 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6888 }
6889
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6890 if (res->to_forward) {
6891 /* We can't process the buffer's contents yet */
6892 res->flags |= CF_WAKE_WRITE;
6893 goto missing_data;
6894 }
6895
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6896 if (unlikely(s->comp_algo != NULL) && msg->msg_state < HTTP_MSG_TRAILERS) {
6897 /* We need a compression buffer in the DATA state to put the
6898 * output of compressed data, and in CRLF state to let the
6899 * TRAILERS state finish the job of removing the trailing CRLF.
6900 */
Willy Tarreauf2f7d6b2014-11-24 11:55:08 +0100[diff] [blame]6901 if (unlikely(!tmpbuf->size)) {
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6902 /* this is the first time we need the compression buffer */
Willy Tarreaue583ea52014-11-24 11:30:16 +0100[diff] [blame]6903 if (b_alloc(&tmpbuf) == NULL)
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6904 goto aborted_xfer; /* no memory */
6905 }
6906
6907 ret = http_compression_buffer_init(s, res->buf, tmpbuf);
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6908 if (ret < 0) {
6909 res->flags |= CF_WAKE_WRITE;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6910 goto missing_data; /* not enough spaces in buffers */
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6911 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6912 compressing = 1;
6913 }
6914
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6915 while (1) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6916 switch (msg->msg_state - HTTP_MSG_DATA) {
6917 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6918 /* we may have some pending data starting at res->buf->p */
6919 if (unlikely(s->comp_algo)) {
Willy Tarreau7f2f8d52014-04-18 00:20:14 +0200[diff] [blame]6920 ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6921 if (ret < 0)
6922 goto aborted_xfer;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6923
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6924 if (msg->chunk_len) {
6925 /* input empty or output full */
6926 if (res->buf->i > msg->next)
6927 res->flags |= CF_WAKE_WRITE;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6928 goto missing_data;
6929 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6930 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6931 else {
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6932 if (msg->chunk_len > res->buf->i - msg->next) {
6933 /* output full */
6934 res->flags |= CF_WAKE_WRITE;
6935 goto missing_data;
6936 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6937 msg->next += msg->chunk_len;
6938 msg->chunk_len = 0;
6939 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6940
6941 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6942 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6943 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6944 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6945 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6946 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6947 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6948 /* fall through for HTTP_MSG_CHUNK_CRLF */
6949
6950 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
6951 /* we want the CRLF after the data */
6952
6953 ret = http_skip_chunk_crlf(msg);
6954 if (ret == 0)
6955 goto missing_data;
6956 else if (ret < 0) {
6957 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6958 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_CHUNK_CRLF, sess->fe);
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6959 goto return_bad_res;
6960 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6961 /* we're in MSG_CHUNK_SIZE now, fall through */
6962
6963 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6964 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]6965 * set ->next to point to the body and switch to DATA or
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6966 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6967 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6968
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6969 ret = http_parse_chunk_size(msg);
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6970 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6971 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6972 else if (ret < 0) {
6973 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6974 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_CHUNK_SIZE, sess->fe);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6975 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6976 }
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]6977 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6978 break;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6979
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6980 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6981 if (unlikely(compressing)) {
6982 /* we need to flush output contents before syncing FSMs */
6983 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6984 compressing = 0;
6985 }
6986
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6987 ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6988 if (ret == 0)
6989 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6990 else if (ret < 0) {
6991 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6992 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_TRAILERS, sess->fe);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6993 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6994 }
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6995 /* we're in HTTP_MSG_DONE now, fall through */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6996
6997 default:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6998 /* other states, DONE...TUNNEL */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6999 if (unlikely(compressing)) {
7000 /* we need to flush output contents before syncing FSMs */
7001 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
7002 compressing = 0;
7003 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]7004
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]7005 /* we may have some pending data starting at res->buf->p
7006 * such as a last chunk of data or trailers.
7007 */
7008 b_adv(res->buf, msg->next);
7009 msg->next = 0;
7010
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]7011 ret = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]7012 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7013 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
7014 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]7015 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]7016
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]7017 if (http_resync_states(s)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]7018 /* some state changes occurred, maybe the analyser
7019 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]7020 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]7021 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7022 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]7023 /* response errors are most likely due to
7024 * the client aborting the transfer.
7025 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7026 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]7027 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]7028 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7029 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, sess->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]7030 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]7031 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]7032 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]7033 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]7034 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7035 }
7036 }
7037
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7038 missing_data:
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]7039 /* we may have some pending data starting at res->buf->p */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]7040 if (unlikely(compressing)) {
7041 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]7042 compressing = 0;
7043 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]7044
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]7045 if ((s->comp_algo == NULL || msg->msg_state >= HTTP_MSG_TRAILERS)) {
7046 b_adv(res->buf, msg->next);
7047 msg->next = 0;
7048 msg->chunk_len -= channel_forward(res, msg->chunk_len);
7049 }
7050
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]7051 if (res->flags & CF_SHUTW)
7052 goto aborted_xfer;
7053
7054 /* stop waiting for data if the input is closed before the end. If the
7055 * client side was already closed, it means that the client has aborted,
7056 * so we don't want to count this as a server abort. Otherwise it's a
7057 * server abort.
7058 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7059 if (res->flags & CF_SHUTR) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7060 if ((s->req.flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]7061 goto aborted_xfer;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7062 if (!(s->flags & SF_ERR_MASK))
7063 s->flags |= SF_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]7064 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7065 if (objt_server(s->target))
7066 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7067 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]7068 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]7069
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]7070 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7071 if (!s->req.analysers)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]7072 goto return_bad_res;
7073
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7074 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7075 * chunks even if the server has closed, so we don't want to set CF_DONTCLOSE.
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7076 * Similarly, with keep-alive on the client side, we don't want to forward a
7077 * close.
7078 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]7079 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7080 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
7081 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]7082 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7083
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7084 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7085 * 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]7086 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]7087 * modes are already handled by the stream sock layer. We must not do
7088 * this in content-length mode because it could present the MSG_MORE
7089 * flag with the last block of forwarded data, which would cause an
7090 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7091 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]7092 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7093 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7094
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7095 /* the stream handler will take care of timeouts and errors */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7096 return 0;
7097
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]7098 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]7099 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7100 if (objt_server(s->target))
7101 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7102
7103 return_bad_res_stats_ok:
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]7104 if (unlikely(compressing)) {
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]7105 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]7106 compressing = 0;
7107 }
7108
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]7109 /* we may have some pending data starting at res->buf->p */
7110 if (s->comp_algo == NULL) {
7111 b_adv(res->buf, msg->next);
7112 msg->next = 0;
7113 }
7114
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7115 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]7116 /* don't send any error message as we're in the body */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]7117 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7118 res->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7119 s->req.analysers = 0; /* we're in data phase, we want to abort both directions */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7120 if (objt_server(s->target))
7121 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7122
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7123 if (!(s->flags & SF_ERR_MASK))
7124 s->flags |= SF_ERR_PRXCOND;
7125 if (!(s->flags & SF_FINST_MASK))
7126 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7127 return 0;
7128
7129 aborted_xfer:
Willy Tarreau6fef8ae2014-04-22 21:22:06 +0200[diff] [blame]7130 if (unlikely(compressing)) {
7131 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
7132 compressing = 0;
7133 }
7134
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7135 txn->rsp.msg_state = HTTP_MSG_ERROR;
7136 /* don't send any error message as we're in the body */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]7137 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7138 res->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7139 s->req.analysers = 0; /* we're in data phase, we want to abort both directions */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7140
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7141 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]7142 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7143 if (objt_server(s->target))
7144 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7145
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7146 if (!(s->flags & SF_ERR_MASK))
7147 s->flags |= SF_ERR_CLICL;
7148 if (!(s->flags & SF_FINST_MASK))
7149 s->flags |= SF_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7150 return 0;
7151}
7152
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7153/* Iterate the same filter through all request headers.
7154 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7155 * Since it can manage the switch to another backend, it updates the per-proxy
7156 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7157 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7158int 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]7159{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7160 char *cur_ptr, *cur_end, *cur_next;
7161 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7162 struct http_txn *txn = s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7163 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7164 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]7165
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7166 last_hdr = 0;
7167
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7168 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7169 old_idx = 0;
7170
7171 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7172 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7173 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7174 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7175 (exp->action == ACT_ALLOW ||
7176 exp->action == ACT_DENY ||
7177 exp->action == ACT_TARPIT))
7178 return 0;
7179
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7180 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7181 if (!cur_idx)
7182 break;
7183
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7184 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7185 cur_ptr = cur_next;
7186 cur_end = cur_ptr + cur_hdr->len;
7187 cur_next = cur_end + cur_hdr->cr + 1;
7188
7189 /* Now we have one header between cur_ptr and cur_end,
7190 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7191 */
7192
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7193 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]7194 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7195 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7196 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7197 last_hdr = 1;
7198 break;
7199
7200 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7201 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7202 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7203 break;
7204
7205 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7206 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7207 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7208 break;
7209
7210 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7211 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7212 if (trash.len < 0)
7213 return -1;
7214
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7215 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7216 /* FIXME: if the user adds a newline in the replacement, the
7217 * index will not be recalculated for now, and the new line
7218 * will not be counted as a new header.
7219 */
7220
7221 cur_end += delta;
7222 cur_next += delta;
7223 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7224 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7225 break;
7226
7227 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7228 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7229 cur_next += delta;
7230
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7231 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7232 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7233 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7234 cur_hdr->len = 0;
7235 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7236 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7237 break;
7238
7239 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7240 }
7241
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7242 /* keep the link from this header to next one in case of later
7243 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7244 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7245 old_idx = cur_idx;
7246 }
7247 return 0;
7248}
7249
7250
7251/* Apply the filter to the request line.
7252 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7253 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7254 * Since it can manage the switch to another backend, it updates the per-proxy
7255 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7256 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7257int 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]7258{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7259 char *cur_ptr, *cur_end;
7260 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7261 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7262 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7263
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7264 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7265 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7266 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7267 (exp->action == ACT_ALLOW ||
7268 exp->action == ACT_DENY ||
7269 exp->action == ACT_TARPIT))
7270 return 0;
7271 else if (exp->action == ACT_REMOVE)
7272 return 0;
7273
7274 done = 0;
7275
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7276 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7277 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7278
7279 /* Now we have the request line between cur_ptr and cur_end */
7280
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7281 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]7282 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7283 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7284 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7285 done = 1;
7286 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7287
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7288 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7289 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7290 done = 1;
7291 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7292
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7293 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7294 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7295 done = 1;
7296 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7297
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7298 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7299 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7300 if (trash.len < 0)
7301 return -1;
7302
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7303 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7304 /* FIXME: if the user adds a newline in the replacement, the
7305 * index will not be recalculated for now, and the new line
7306 * will not be counted as a new header.
7307 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7308
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7309 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7310 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7311 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7312 HTTP_MSG_RQMETH,
7313 cur_ptr, cur_end + 1,
7314 NULL, NULL);
7315 if (unlikely(!cur_end))
7316 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7317
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7318 /* we have a full request and we know that we have either a CR
7319 * or an LF at <ptr>.
7320 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7321 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
7322 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]7323 /* there is no point trying this regex on headers */
7324 return 1;
7325 }
7326 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7327 return done;
7328}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]7329
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7330
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7331
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7332/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7333 * 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]7334 * 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]7335 * unparsable request. Since it can manage the switch to another backend, it
7336 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7337 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7338int apply_filters_to_request(struct stream *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7339{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7340 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7341 struct http_txn *txn = s->txn;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7342 struct hdr_exp *exp;
7343
7344 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7345 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7346
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7347 /*
7348 * The interleaving of transformations and verdicts
7349 * makes it difficult to decide to continue or stop
7350 * the evaluation.
7351 */
7352
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7353 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
7354 break;
7355
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7356 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7357 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7358 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7359 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7360
7361 /* if this filter had a condition, evaluate it now and skip to
7362 * next filter if the condition does not match.
7363 */
7364 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7365 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]7366 ret = acl_pass(ret);
7367 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7368 ret = !ret;
7369
7370 if (!ret)
7371 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7372 }
7373
7374 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7375 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7376 if (unlikely(ret < 0))
7377 return -1;
7378
7379 if (likely(ret == 0)) {
7380 /* The filter did not match the request, it can be
7381 * iterated through all headers.
7382 */
Willy Tarreau34d4c3c2015-01-30 20:58:58 +0100[diff] [blame]7383 if (unlikely(apply_filter_to_req_headers(s, req, exp) < 0))
7384 return -1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7385 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7386 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7387 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7388}
7389
7390
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7391
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7392/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7393 * Try to retrieve the server associated to the appsession.
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7394 * If the server is found, it's assigned to the stream.
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7395 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7396void manage_client_side_appsession(struct stream *s, const char *buf, int len) {
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7397 struct http_txn *txn = s->txn;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7398 appsess *asession = NULL;
7399 char *sessid_temp = NULL;
7400
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7401 if (len > s->be->appsession_len) {
7402 len = s->be->appsession_len;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7403 }
7404
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7405 if (s->be->options2 & PR_O2_AS_REQL) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7406 /* request-learn option is enabled : store the sessid in the stream for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7407 if (txn->sessid != NULL) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7408 /* free previously allocated memory as we don't need the stream id found in the URL anymore */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7409 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7410 }
7411
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7412 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7413 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7414 send_log(s->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7415 return;
7416 }
7417
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7418 memcpy(txn->sessid, buf, len);
7419 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7420 }
7421
7422 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
7423 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7424 send_log(s->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7425 return;
7426 }
7427
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7428 memcpy(sessid_temp, buf, len);
7429 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7430
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7431 asession = appsession_hash_lookup(&(s->be->htbl_proxy), sessid_temp);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7432 /* free previously allocated memory */
7433 pool_free2(apools.sessid, sessid_temp);
7434
7435 if (asession != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7436 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
7437 if (!(s->be->options2 & PR_O2_AS_REQL))
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7438 asession->request_count++;
7439
7440 if (asession->serverid != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7441 struct server *srv = s->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7442
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7443 while (srv) {
7444 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7445 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7446 (s->be->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7447 (s->flags & SF_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7448 /* we found the server and it's usable */
7449 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7450 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7451 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7452 s->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]7453
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7454 break;
7455 } else {
7456 txn->flags &= ~TX_CK_MASK;
7457 txn->flags |= TX_CK_DOWN;
7458 }
7459 }
7460 srv = srv->next;
7461 }
7462 }
7463 }
7464}
7465
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7466/* Find the end of a cookie value contained between <s> and <e>. It works the
7467 * same way as with headers above except that the semi-colon also ends a token.
7468 * See RFC2965 for more information. Note that it requires a valid header to
7469 * return a valid result.
7470 */
7471char *find_cookie_value_end(char *s, const char *e)
7472{
7473 int quoted, qdpair;
7474
7475 quoted = qdpair = 0;
7476 for (; s < e; s++) {
7477 if (qdpair) qdpair = 0;
7478 else if (quoted) {
7479 if (*s == '\\') qdpair = 1;
7480 else if (*s == '"') quoted = 0;
7481 }
7482 else if (*s == '"') quoted = 1;
7483 else if (*s == ',' || *s == ';') return s;
7484 }
7485 return s;
7486}
7487
7488/* Delete a value in a header between delimiters <from> and <next> in buffer
7489 * <buf>. The number of characters displaced is returned, and the pointer to
7490 * the first delimiter is updated if required. The function tries as much as
7491 * possible to respect the following principles :
7492 * - replace <from> delimiter by the <next> one unless <from> points to a
7493 * colon, in which case <next> is simply removed
7494 * - set exactly one space character after the new first delimiter, unless
7495 * there are not enough characters in the block being moved to do so.
7496 * - remove unneeded spaces before the previous delimiter and after the new
7497 * one.
7498 *
7499 * It is the caller's responsibility to ensure that :
7500 * - <from> points to a valid delimiter or the colon ;
7501 * - <next> points to a valid delimiter or the final CR/LF ;
7502 * - there are non-space chars before <from> ;
7503 * - there is a CR/LF at or after <next>.
7504 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]7505int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7506{
7507 char *prev = *from;
7508
7509 if (*prev == ':') {
7510 /* We're removing the first value, preserve the colon and add a
7511 * space if possible.
7512 */
7513 if (!http_is_crlf[(unsigned char)*next])
7514 next++;
7515 prev++;
7516 if (prev < next)
7517 *prev++ = ' ';
7518
7519 while (http_is_spht[(unsigned char)*next])
7520 next++;
7521 } else {
7522 /* Remove useless spaces before the old delimiter. */
7523 while (http_is_spht[(unsigned char)*(prev-1)])
7524 prev--;
7525 *from = prev;
7526
7527 /* copy the delimiter and if possible a space if we're
7528 * not at the end of the line.
7529 */
7530 if (!http_is_crlf[(unsigned char)*next]) {
7531 *prev++ = *next++;
7532 if (prev + 1 < next)
7533 *prev++ = ' ';
7534 while (http_is_spht[(unsigned char)*next])
7535 next++;
7536 }
7537 }
7538 return buffer_replace2(buf, prev, next, NULL, 0);
7539}
7540
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7541/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7542 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7543 * desirable to call it only when needed. This code is quite complex because
7544 * of the multiple very crappy and ambiguous syntaxes we have to support. it
7545 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7546 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7547void manage_client_side_cookies(struct stream *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7548{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7549 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7550 struct session *sess = s->sess;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7551 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7552 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7553 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
7554 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7555
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7556 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]7557 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7558 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7559
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7560 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7561 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7562 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7563
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7564 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7565 hdr_beg = hdr_next;
7566 hdr_end = hdr_beg + cur_hdr->len;
7567 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7568
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7569 /* We have one full header between hdr_beg and hdr_end, and the
7570 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7571 * "Cookie:" headers.
7572 */
7573
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7574 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7575 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7576 old_idx = cur_idx;
7577 continue;
7578 }
7579
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7580 del_from = NULL; /* nothing to be deleted */
7581 preserve_hdr = 0; /* assume we may kill the whole header */
7582
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7583 /* Now look for cookies. Conforming to RFC2109, we have to support
7584 * attributes whose name begin with a '$', and associate them with
7585 * the right cookie, if we want to delete this cookie.
7586 * So there are 3 cases for each cookie read :
7587 * 1) it's a special attribute, beginning with a '$' : ignore it.
7588 * 2) it's a server id cookie that we *MAY* want to delete : save
7589 * some pointers on it (last semi-colon, beginning of cookie...)
7590 * 3) it's an application cookie : we *MAY* have to delete a previous
7591 * "special" cookie.
7592 * At the end of loop, if a "special" cookie remains, we may have to
7593 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7594 * *MUST* delete it.
7595 *
7596 * Note: RFC2965 is unclear about the processing of spaces around
7597 * the equal sign in the ATTR=VALUE form. A careful inspection of
7598 * the RFC explicitly allows spaces before it, and not within the
7599 * tokens (attrs or values). An inspection of RFC2109 allows that
7600 * too but section 10.1.3 lets one think that spaces may be allowed
7601 * after the equal sign too, resulting in some (rare) buggy
7602 * implementations trying to do that. So let's do what servers do.
7603 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
7604 * allowed quoted strings in values, with any possible character
7605 * after a backslash, including control chars and delimitors, which
7606 * causes parsing to become ambiguous. Browsers also allow spaces
7607 * within values even without quotes.
7608 *
7609 * We have to keep multiple pointers in order to support cookie
7610 * removal at the beginning, middle or end of header without
7611 * corrupting the header. All of these headers are valid :
7612 *
7613 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
7614 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
7615 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
7616 * | | | | | | | | |
7617 * | | | | | | | | hdr_end <--+
7618 * | | | | | | | +--> next
7619 * | | | | | | +----> val_end
7620 * | | | | | +-----------> val_beg
7621 * | | | | +--------------> equal
7622 * | | | +----------------> att_end
7623 * | | +---------------------> att_beg
7624 * | +--------------------------> prev
7625 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7626 */
7627
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7628 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
7629 /* Iterate through all cookies on this line */
7630
7631 /* find att_beg */
7632 att_beg = prev + 1;
7633 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7634 att_beg++;
7635
7636 /* find att_end : this is the first character after the last non
7637 * space before the equal. It may be equal to hdr_end.
7638 */
7639 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7640
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7641 while (equal < hdr_end) {
7642 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7643 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7644 if (http_is_spht[(unsigned char)*equal++])
7645 continue;
7646 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7647 }
7648
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7649 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7650 * is between <att_beg> and <equal>, both may be identical.
7651 */
7652
7653 /* look for end of cookie if there is an equal sign */
7654 if (equal < hdr_end && *equal == '=') {
7655 /* look for the beginning of the value */
7656 val_beg = equal + 1;
7657 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7658 val_beg++;
7659
7660 /* find the end of the value, respecting quotes */
7661 next = find_cookie_value_end(val_beg, hdr_end);
7662
7663 /* make val_end point to the first white space or delimitor after the value */
7664 val_end = next;
7665 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7666 val_end--;
7667 } else {
7668 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7669 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7670
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7671 /* We have nothing to do with attributes beginning with '$'. However,
7672 * they will automatically be removed if a header before them is removed,
7673 * since they're supposed to be linked together.
7674 */
7675 if (*att_beg == '$')
7676 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7677
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7678 /* Ignore cookies with no equal sign */
7679 if (equal == next) {
7680 /* This is not our cookie, so we must preserve it. But if we already
7681 * scheduled another cookie for removal, we cannot remove the
7682 * complete header, but we can remove the previous block itself.
7683 */
7684 preserve_hdr = 1;
7685 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7686 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7687 val_end += delta;
7688 next += delta;
7689 hdr_end += delta;
7690 hdr_next += delta;
7691 cur_hdr->len += delta;
7692 http_msg_move_end(&txn->req, delta);
7693 prev = del_from;
7694 del_from = NULL;
7695 }
7696 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7697 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7698
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7699 /* if there are spaces around the equal sign, we need to
7700 * strip them otherwise we'll get trouble for cookie captures,
7701 * or even for rewrites. Since this happens extremely rarely,
7702 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7703 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7704 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7705 int stripped_before = 0;
7706 int stripped_after = 0;
7707
7708 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7709 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7710 equal += stripped_before;
7711 val_beg += stripped_before;
7712 }
7713
7714 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7715 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7716 val_beg += stripped_after;
7717 stripped_before += stripped_after;
7718 }
7719
7720 val_end += stripped_before;
7721 next += stripped_before;
7722 hdr_end += stripped_before;
7723 hdr_next += stripped_before;
7724 cur_hdr->len += stripped_before;
7725 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7726 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7727 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7728
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7729 /* First, let's see if we want to capture this cookie. We check
7730 * that we don't already have a client side cookie, because we
7731 * can only capture one. Also as an optimisation, we ignore
7732 * cookies shorter than the declared name.
7733 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7734 if (sess->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7735 (val_end - att_beg >= sess->fe->capture_namelen) &&
7736 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7737 int log_len = val_end - att_beg;
7738
7739 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7740 Alert("HTTP logging : out of memory.\n");
7741 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7742 if (log_len > sess->fe->capture_len)
7743 log_len = sess->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7744 memcpy(txn->cli_cookie, att_beg, log_len);
7745 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7746 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7747 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7748
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7749 /* Persistence cookies in passive, rewrite or insert mode have the
7750 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7751 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7752 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7753 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7754 * For cookies in prefix mode, the form is :
7755 *
7756 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7757 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7758 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
7759 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
7760 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7761 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7762
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7763 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7764 * have the server ID between val_beg and delim, and the original cookie between
7765 * delim+1 and val_end. Otherwise, delim==val_end :
7766 *
7767 * Cookie: NAME=SRV; # in all but prefix modes
7768 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7769 * | || || | |+-> next
7770 * | || || | +--> val_end
7771 * | || || +---------> delim
7772 * | || |+------------> val_beg
7773 * | || +-------------> att_end = equal
7774 * | |+-----------------> att_beg
7775 * | +------------------> prev
7776 * +-------------------------> hdr_beg
7777 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7778
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7779 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7780 for (delim = val_beg; delim < val_end; delim++)
7781 if (*delim == COOKIE_DELIM)
7782 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7783 } else {
7784 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7785 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7786 /* Now check if the cookie contains a date field, which would
7787 * appear after a vertical bar ('|') just after the server name
7788 * and before the delimiter.
7789 */
7790 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7791 if (vbar1) {
7792 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7793 * right is the last seen date. It is a base64 encoded
7794 * 30-bit value representing the UNIX date since the
7795 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7796 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7797 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7798 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7799 if (val_end - vbar1 >= 5) {
7800 val = b64tos30(vbar1);
7801 if (val > 0)
7802 txn->cookie_last_date = val << 2;
7803 }
7804 /* look for a second vertical bar */
7805 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7806 if (vbar1 && (val_end - vbar1 > 5)) {
7807 val = b64tos30(vbar1 + 1);
7808 if (val > 0)
7809 txn->cookie_first_date = val << 2;
7810 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7811 }
7812 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7813
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7814 /* if the cookie has an expiration date and the proxy wants to check
7815 * it, then we do that now. We first check if the cookie is too old,
7816 * then only if it has expired. We detect strict overflow because the
7817 * time resolution here is not great (4 seconds). Cookies with dates
7818 * in the future are ignored if their offset is beyond one day. This
7819 * allows an admin to fix timezone issues without expiring everyone
7820 * and at the same time avoids keeping unwanted side effects for too
7821 * long.
7822 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7823 if (txn->cookie_first_date && s->be->cookie_maxlife &&
7824 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7825 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7826 txn->flags &= ~TX_CK_MASK;
7827 txn->flags |= TX_CK_OLD;
7828 delim = val_beg; // let's pretend we have not found the cookie
7829 txn->cookie_first_date = 0;
7830 txn->cookie_last_date = 0;
7831 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7832 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
7833 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7834 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7835 txn->flags &= ~TX_CK_MASK;
7836 txn->flags |= TX_CK_EXPIRED;
7837 delim = val_beg; // let's pretend we have not found the cookie
7838 txn->cookie_first_date = 0;
7839 txn->cookie_last_date = 0;
7840 }
7841
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7842 /* Here, we'll look for the first running server which supports the cookie.
7843 * This allows to share a same cookie between several servers, for example
7844 * to dedicate backup servers to specific servers only.
7845 * However, to prevent clients from sticking to cookie-less backup server
7846 * when they have incidentely learned an empty cookie, we simply ignore
7847 * empty cookies and mark them as invalid.
7848 * The same behaviour is applied when persistence must be ignored.
7849 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7850 if ((delim == val_beg) || (s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7851 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7852
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7853 while (srv) {
7854 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7855 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7856 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7857 (s->be->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7858 (s->flags & SF_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7859 /* we found the server and we can use it */
7860 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7861 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7862 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7863 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7864 break;
7865 } else {
7866 /* we found a server, but it's down,
7867 * mark it as such and go on in case
7868 * another one is available.
7869 */
7870 txn->flags &= ~TX_CK_MASK;
7871 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7872 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7873 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7874 srv = srv->next;
7875 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7876
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7877 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7878 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7879 txn->flags &= ~TX_CK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7880 if ((s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7881 txn->flags |= TX_CK_UNUSED;
7882 else
7883 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7884 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7885
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7886 /* depending on the cookie mode, we may have to either :
7887 * - delete the complete cookie if we're in insert+indirect mode, so that
7888 * the server never sees it ;
7889 * - remove the server id from the cookie value, and tag the cookie as an
7890 * application cookie so that it does not get accidentely removed later,
7891 * if we're in cookie prefix mode
7892 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7893 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7894 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7895
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7896 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7897 val_end += delta;
7898 next += delta;
7899 hdr_end += delta;
7900 hdr_next += delta;
7901 cur_hdr->len += delta;
7902 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7903
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7904 del_from = NULL;
7905 preserve_hdr = 1; /* we want to keep this cookie */
7906 }
7907 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7908 (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]7909 del_from = prev;
7910 }
7911 } else {
7912 /* This is not our cookie, so we must preserve it. But if we already
7913 * scheduled another cookie for removal, we cannot remove the
7914 * complete header, but we can remove the previous block itself.
7915 */
7916 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7917
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7918 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7919 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7920 if (att_beg >= del_from)
7921 att_beg += delta;
7922 if (att_end >= del_from)
7923 att_end += delta;
7924 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7925 val_end += delta;
7926 next += delta;
7927 hdr_end += delta;
7928 hdr_next += delta;
7929 cur_hdr->len += delta;
7930 http_msg_move_end(&txn->req, delta);
7931 prev = del_from;
7932 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7933 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7934 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7935
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7936 /* Look for the appsession cookie unless persistence must be ignored */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7937 if (!(s->flags & SF_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7938 int cmp_len, value_len;
7939 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7940
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7941 if (s->be->options2 & PR_O2_AS_PFX) {
7942 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
7943 value_begin = att_beg + s->be->appsession_name_len;
7944 value_len = val_end - att_beg - s->be->appsession_name_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7945 } else {
7946 cmp_len = att_end - att_beg;
7947 value_begin = val_beg;
7948 value_len = val_end - val_beg;
7949 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7950
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7951 /* let's see if the cookie is our appcookie */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7952 if (cmp_len == s->be->appsession_name_len &&
7953 memcmp(att_beg, s->be->appsession_name, cmp_len) == 0) {
7954 manage_client_side_appsession(s, value_begin, value_len);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7955 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7956 }
7957
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7958 /* continue with next cookie on this header line */
7959 att_beg = next;
7960 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7961
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7962 /* There are no more cookies on this line.
7963 * We may still have one (or several) marked for deletion at the
7964 * end of the line. We must do this now in two ways :
7965 * - if some cookies must be preserved, we only delete from the
7966 * mark to the end of line ;
7967 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7968 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7969 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7970 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7971 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7972 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7973 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7974 cur_hdr->len += delta;
7975 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7976 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7977
7978 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7979 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7980 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7981 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7982 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7983 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7984 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7985 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7986 }
7987
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7988 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7989 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7990 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7991}
7992
7993
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7994/* Iterate the same filter through all response headers contained in <rtr>.
7995 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7996 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7997int 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]7998{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7999 char *cur_ptr, *cur_end, *cur_next;
8000 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8001 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8002 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8003 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8004
8005 last_hdr = 0;
8006
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8007 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8008 old_idx = 0;
8009
8010 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8011 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8012 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8013 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8014 (exp->action == ACT_ALLOW ||
8015 exp->action == ACT_DENY))
8016 return 0;
8017
8018 cur_idx = txn->hdr_idx.v[old_idx].next;
8019 if (!cur_idx)
8020 break;
8021
8022 cur_hdr = &txn->hdr_idx.v[cur_idx];
8023 cur_ptr = cur_next;
8024 cur_end = cur_ptr + cur_hdr->len;
8025 cur_next = cur_end + cur_hdr->cr + 1;
8026
8027 /* Now we have one header between cur_ptr and cur_end,
8028 * and the next header starts at cur_next.
8029 */
8030
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]8031 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]8032 switch (exp->action) {
8033 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8034 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8035 last_hdr = 1;
8036 break;
8037
8038 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8039 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8040 last_hdr = 1;
8041 break;
8042
8043 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8044 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
8045 if (trash.len < 0)
8046 return -1;
8047
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8048 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8049 /* FIXME: if the user adds a newline in the replacement, the
8050 * index will not be recalculated for now, and the new line
8051 * will not be counted as a new header.
8052 */
8053
8054 cur_end += delta;
8055 cur_next += delta;
8056 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8057 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8058 break;
8059
8060 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8061 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8062 cur_next += delta;
8063
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8064 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8065 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8066 txn->hdr_idx.used--;
8067 cur_hdr->len = 0;
8068 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8069 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8070 break;
8071
8072 }
8073 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8074
8075 /* keep the link from this header to next one in case of later
8076 * removal of next header.
8077 */
8078 old_idx = cur_idx;
8079 }
8080 return 0;
8081}
8082
8083
8084/* Apply the filter to the status line in the response buffer <rtr>.
8085 * Returns 0 if nothing has been done, 1 if the filter has been applied,
8086 * or -1 if a replacement resulted in an invalid status line.
8087 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8088int 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]8089{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8090 char *cur_ptr, *cur_end;
8091 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8092 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8093 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8094
8095
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8096 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8097 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8098 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8099 (exp->action == ACT_ALLOW ||
8100 exp->action == ACT_DENY))
8101 return 0;
8102 else if (exp->action == ACT_REMOVE)
8103 return 0;
8104
8105 done = 0;
8106
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8107 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]8108 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8109
8110 /* Now we have the status line between cur_ptr and cur_end */
8111
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]8112 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]8113 switch (exp->action) {
8114 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8115 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8116 done = 1;
8117 break;
8118
8119 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8120 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8121 done = 1;
8122 break;
8123
8124 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8125 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
8126 if (trash.len < 0)
8127 return -1;
8128
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8129 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8130 /* FIXME: if the user adds a newline in the replacement, the
8131 * index will not be recalculated for now, and the new line
8132 * will not be counted as a new header.
8133 */
8134
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8135 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8136 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8137 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]8138 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8139 cur_ptr, cur_end + 1,
8140 NULL, NULL);
8141 if (unlikely(!cur_end))
8142 return -1;
8143
8144 /* we have a full respnse and we know that we have either a CR
8145 * or an LF at <ptr>.
8146 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8147 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]8148 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]8149 /* there is no point trying this regex on headers */
8150 return 1;
8151 }
8152 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8153 return done;
8154}
8155
8156
8157
8158/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8159 * 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]8160 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
8161 * unparsable response.
8162 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8163int apply_filters_to_response(struct stream *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8164{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]8165 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8166 struct http_txn *txn = s->txn;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8167 struct hdr_exp *exp;
8168
8169 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8170 int ret;
8171
8172 /*
8173 * The interleaving of transformations and verdicts
8174 * makes it difficult to decide to continue or stop
8175 * the evaluation.
8176 */
8177
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8178 if (txn->flags & TX_SVDENY)
8179 break;
8180
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8181 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8182 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
8183 exp->action == ACT_PASS)) {
8184 exp = exp->next;
8185 continue;
8186 }
8187
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8188 /* if this filter had a condition, evaluate it now and skip to
8189 * next filter if the condition does not match.
8190 */
8191 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]8192 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]8193 ret = acl_pass(ret);
8194 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
8195 ret = !ret;
8196 if (!ret)
8197 continue;
8198 }
8199
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8200 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8201 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8202 if (unlikely(ret < 0))
8203 return -1;
8204
8205 if (likely(ret == 0)) {
8206 /* The filter did not match the response, it can be
8207 * iterated through all headers.
8208 */
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8209 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
8210 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8211 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8212 }
8213 return 0;
8214}
8215
8216
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8217/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]8218 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8219 * desirable to call it only when needed. This function is also used when we
8220 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8221 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8222void manage_server_side_cookies(struct stream *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8223{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8224 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8225 struct session *sess = s->sess;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8226 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8227 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8228 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8229 char *hdr_beg, *hdr_end, *hdr_next;
8230 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8231
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8232 /* Iterate through the headers.
8233 * we start with the start line.
8234 */
8235 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8236 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8237
8238 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
8239 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8240 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8241
8242 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8243 hdr_beg = hdr_next;
8244 hdr_end = hdr_beg + cur_hdr->len;
8245 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8246
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8247 /* We have one full header between hdr_beg and hdr_end, and the
8248 * next header starts at hdr_next. We're only interested in
8249 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8250 */
8251
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8252 is_cookie2 = 0;
8253 prev = hdr_beg + 10;
8254 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8255 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8256 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
8257 if (!val) {
8258 old_idx = cur_idx;
8259 continue;
8260 }
8261 is_cookie2 = 1;
8262 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8263 }
8264
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8265 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
8266 * <prev> points to the colon.
8267 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8268 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8269
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8270 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
8271 * check-cache is enabled) and we are not interested in checking
8272 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]8273 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8274 if (s->be->cookie_name == NULL &&
8275 s->be->appsession_name == NULL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8276 sess->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8277 return;
8278
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8279 /* OK so now we know we have to process this response cookie.
8280 * The format of the Set-Cookie header is slightly different
8281 * from the format of the Cookie header in that it does not
8282 * support the comma as a cookie delimiter (thus the header
8283 * cannot be folded) because the Expires attribute described in
8284 * the original Netscape's spec may contain an unquoted date
8285 * with a comma inside. We have to live with this because
8286 * many browsers don't support Max-Age and some browsers don't
8287 * support quoted strings. However the Set-Cookie2 header is
8288 * clean.
8289 *
8290 * We have to keep multiple pointers in order to support cookie
8291 * removal at the beginning, middle or end of header without
8292 * corrupting the header (in case of set-cookie2). A special
8293 * pointer, <scav> points to the beginning of the set-cookie-av
8294 * fields after the first semi-colon. The <next> pointer points
8295 * either to the end of line (set-cookie) or next unquoted comma
8296 * (set-cookie2). All of these headers are valid :
8297 *
8298 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
8299 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8300 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8301 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
8302 * | | | | | | | | | |
8303 * | | | | | | | | +-> next hdr_end <--+
8304 * | | | | | | | +------------> scav
8305 * | | | | | | +--------------> val_end
8306 * | | | | | +--------------------> val_beg
8307 * | | | | +----------------------> equal
8308 * | | | +------------------------> att_end
8309 * | | +----------------------------> att_beg
8310 * | +------------------------------> prev
8311 * +-----------------------------------------> hdr_beg
8312 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8313
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8314 for (; prev < hdr_end; prev = next) {
8315 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8316
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8317 /* find att_beg */
8318 att_beg = prev + 1;
8319 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8320 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8321
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8322 /* find att_end : this is the first character after the last non
8323 * space before the equal. It may be equal to hdr_end.
8324 */
8325 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8326
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8327 while (equal < hdr_end) {
8328 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
8329 break;
8330 if (http_is_spht[(unsigned char)*equal++])
8331 continue;
8332 att_end = equal;
8333 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8334
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8335 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8336 * is between <att_beg> and <equal>, both may be identical.
8337 */
8338
8339 /* look for end of cookie if there is an equal sign */
8340 if (equal < hdr_end && *equal == '=') {
8341 /* look for the beginning of the value */
8342 val_beg = equal + 1;
8343 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8344 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8345
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8346 /* find the end of the value, respecting quotes */
8347 next = find_cookie_value_end(val_beg, hdr_end);
8348
8349 /* make val_end point to the first white space or delimitor after the value */
8350 val_end = next;
8351 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8352 val_end--;
8353 } else {
8354 /* <equal> points to next comma, semi-colon or EOL */
8355 val_beg = val_end = next = equal;
8356 }
8357
8358 if (next < hdr_end) {
8359 /* Set-Cookie2 supports multiple cookies, and <next> points to
8360 * a colon or semi-colon before the end. So skip all attr-value
8361 * pairs and look for the next comma. For Set-Cookie, since
8362 * commas are permitted in values, skip to the end.
8363 */
8364 if (is_cookie2)
8365 next = find_hdr_value_end(next, hdr_end);
8366 else
8367 next = hdr_end;
8368 }
8369
8370 /* Now everything is as on the diagram above */
8371
8372 /* Ignore cookies with no equal sign */
8373 if (equal == val_end)
8374 continue;
8375
8376 /* If there are spaces around the equal sign, we need to
8377 * strip them otherwise we'll get trouble for cookie captures,
8378 * or even for rewrites. Since this happens extremely rarely,
8379 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8380 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8381 if (unlikely(att_end != equal || val_beg > equal + 1)) {
8382 int stripped_before = 0;
8383 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8384
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8385 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8386 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8387 equal += stripped_before;
8388 val_beg += stripped_before;
8389 }
8390
8391 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8392 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8393 val_beg += stripped_after;
8394 stripped_before += stripped_after;
8395 }
8396
8397 val_end += stripped_before;
8398 next += stripped_before;
8399 hdr_end += stripped_before;
8400 hdr_next += stripped_before;
8401 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]8402 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8403 }
8404
8405 /* First, let's see if we want to capture this cookie. We check
8406 * that we don't already have a server side cookie, because we
8407 * can only capture one. Also as an optimisation, we ignore
8408 * cookies shorter than the declared name.
8409 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8410 if (sess->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]8411 txn->srv_cookie == NULL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8412 (val_end - att_beg >= sess->fe->capture_namelen) &&
8413 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8414 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]8415 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8416 Alert("HTTP logging : out of memory.\n");
8417 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8418 else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8419 if (log_len > sess->fe->capture_len)
8420 log_len = sess->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8421 memcpy(txn->srv_cookie, att_beg, log_len);
8422 txn->srv_cookie[log_len] = 0;
8423 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8424 }
8425
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8426 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8427 /* now check if we need to process it for persistence */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8428 if (!(s->flags & SF_IGNORE_PRST) &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8429 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
8430 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8431 /* assume passive cookie by default */
8432 txn->flags &= ~TX_SCK_MASK;
8433 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8434
8435 /* If the cookie is in insert mode on a known server, we'll delete
8436 * this occurrence because we'll insert another one later.
8437 * 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]8438 * a direct access.
8439 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8440 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]8441 /* The "preserve" flag was set, we don't want to touch the
8442 * server's cookie.
8443 */
8444 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8445 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8446 ((s->flags & SF_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8447 /* this cookie must be deleted */
8448 if (*prev == ':' && next == hdr_end) {
8449 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8450 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8451 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8452 txn->hdr_idx.used--;
8453 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8454 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8455 hdr_next += delta;
8456 http_msg_move_end(&txn->rsp, delta);
8457 /* note: while both invalid now, <next> and <hdr_end>
8458 * are still equal, so the for() will stop as expected.
8459 */
8460 } else {
8461 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8462 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8463 next = prev;
8464 hdr_end += delta;
8465 hdr_next += delta;
8466 cur_hdr->len += delta;
8467 http_msg_move_end(&txn->rsp, delta);
8468 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8469 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8470 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8471 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8472 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8473 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8474 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8475 * with this server since we know it.
8476 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8477 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8478 next += delta;
8479 hdr_end += delta;
8480 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8481 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8482 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8483
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8484 txn->flags &= ~TX_SCK_MASK;
8485 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8486 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8487 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8488 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8489 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8490 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8491 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8492 next += delta;
8493 hdr_end += delta;
8494 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8495 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8496 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8497
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8498 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8499 txn->flags &= ~TX_SCK_MASK;
8500 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8501 }
8502 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]8503 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8504 else if (!(s->flags & SF_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8505 int cmp_len, value_len;
8506 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8507
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8508 if (s->be->options2 & PR_O2_AS_PFX) {
8509 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
8510 value_begin = att_beg + s->be->appsession_name_len;
8511 value_len = MIN(s->be->appsession_len, val_end - att_beg - s->be->appsession_name_len);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8512 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8513 cmp_len = att_end - att_beg;
8514 value_begin = val_beg;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8515 value_len = MIN(s->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8516 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8517
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8518 if ((cmp_len == s->be->appsession_name_len) &&
8519 (memcmp(att_beg, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8520 /* free a possibly previously allocated memory */
8521 pool_free2(apools.sessid, txn->sessid);
8522
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8523 /* Store the sessid in the stream for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8524 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8525 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8526 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8527 return;
8528 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8529 memcpy(txn->sessid, value_begin, value_len);
8530 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8531 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8532 }
8533 /* that's done for this cookie, check the next one on the same
8534 * line when next != hdr_end (only if is_cookie2).
8535 */
8536 }
8537 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8538 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8539 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8540
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8541 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8542 appsess *asession = NULL;
8543 /* only do insert, if lookup fails */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8544 asession = appsession_hash_lookup(&(s->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8545 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]8546 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8547 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
8548 Alert("Not enough Memory process_srv():asession:calloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8549 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8550 return;
8551 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8552 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
8553
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8554 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
8555 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8556 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8557 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8558 return;
8559 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8560 memcpy(asession->sessid, txn->sessid, s->be->appsession_len);
8561 asession->sessid[s->be->appsession_len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8562
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8563 server_id_len = strlen(objt_server(s->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8564 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8565 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8566 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8567 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8568 return;
8569 }
8570 asession->serverid[0] = '\0';
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8571 memcpy(asession->serverid, objt_server(s->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8572
8573 asession->request_count = 0;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8574 appsession_hash_insert(&(s->be->htbl_proxy), asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8575 }
8576
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8577 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8578 asession->request_count++;
8579 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8580}
8581
8582
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8583/*
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8584 * Check if response is cacheable or not. Updates s->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8585 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8586void check_response_for_cacheability(struct stream *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8587{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8588 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8589 char *p1, *p2;
8590
8591 char *cur_ptr, *cur_end, *cur_next;
8592 int cur_idx;
8593
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]8594 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8595 return;
8596
8597 /* Iterate through the headers.
8598 * we start with the start line.
8599 */
8600 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8601 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8602
8603 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
8604 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8605 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8606
8607 cur_hdr = &txn->hdr_idx.v[cur_idx];
8608 cur_ptr = cur_next;
8609 cur_end = cur_ptr + cur_hdr->len;
8610 cur_next = cur_end + cur_hdr->cr + 1;
8611
8612 /* We have one full header between cur_ptr and cur_end, and the
8613 * next header starts at cur_next. We're only interested in
8614 * "Cookie:" headers.
8615 */
8616
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8617 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
8618 if (val) {
8619 if ((cur_end - (cur_ptr + val) >= 8) &&
8620 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
8621 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
8622 return;
8623 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8624 }
8625
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8626 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
8627 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8628 continue;
8629
8630 /* OK, right now we know we have a cache-control header at cur_ptr */
8631
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8632 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8633
8634 if (p1 >= cur_end) /* no more info */
8635 continue;
8636
8637 /* p1 is at the beginning of the value */
8638 p2 = p1;
8639
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]8640 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8641 p2++;
8642
8643 /* we have a complete value between p1 and p2 */
8644 if (p2 < cur_end && *p2 == '=') {
8645 /* we have something of the form no-cache="set-cookie" */
8646 if ((cur_end - p1 >= 21) &&
8647 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
8648 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8649 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8650 continue;
8651 }
8652
8653 /* OK, so we know that either p2 points to the end of string or to a comma */
8654 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8655 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8656 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8657 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8658 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8659 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8660 return;
8661 }
8662
8663 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8664 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8665 continue;
8666 }
8667 }
8668}
8669
8670
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8671/*
8672 * Try to retrieve a known appsession in the URI, then the associated server.
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8673 * If the server is found, it's assigned to the stream.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8674 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8675void get_srv_from_appsession(struct stream *s, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8676{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8677 char *end_params, *first_param, *cur_param, *next_param;
8678 char separator;
8679 int value_len;
8680
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8681 int mode = s->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8682
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8683 if (s->be->appsession_name == NULL ||
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8684 (s->txn->meth != HTTP_METH_GET && s->txn->meth != HTTP_METH_POST && s->txn->meth != HTTP_METH_HEAD)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8685 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8686 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8687
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8688 first_param = NULL;
8689 switch (mode) {
8690 case PR_O2_AS_M_PP:
8691 first_param = memchr(begin, ';', len);
8692 break;
8693 case PR_O2_AS_M_QS:
8694 first_param = memchr(begin, '?', len);
8695 break;
8696 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8697
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8698 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8699 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8700 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8701
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8702 switch (mode) {
8703 case PR_O2_AS_M_PP:
8704 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
8705 end_params = (char *) begin + len;
8706 }
8707 separator = ';';
8708 break;
8709 case PR_O2_AS_M_QS:
8710 end_params = (char *) begin + len;
8711 separator = '&';
8712 break;
8713 default:
8714 /* unknown mode, shouldn't happen */
8715 return;
8716 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8717
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8718 cur_param = next_param = end_params;
8719 while (cur_param > first_param) {
8720 cur_param--;
8721 if ((cur_param[0] == separator) || (cur_param == first_param)) {
8722 /* let's see if this is the appsession parameter */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8723 if ((cur_param + s->be->appsession_name_len + 1 < next_param) &&
8724 ((s->be->options2 & PR_O2_AS_PFX) || cur_param[s->be->appsession_name_len + 1] == '=') &&
8725 (strncasecmp(cur_param + 1, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8726 /* Cool... it's the right one */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8727 cur_param += s->be->appsession_name_len + (s->be->options2 & PR_O2_AS_PFX ? 1 : 2);
8728 value_len = MIN(s->be->appsession_len, next_param - cur_param);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8729 if (value_len > 0) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8730 manage_client_side_appsession(s, cur_param, value_len);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8731 }
8732 break;
8733 }
8734 next_param = cur_param;
8735 }
8736 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8737#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]8738 Alert("get_srv_from_appsession\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8739 appsession_hash_dump(&(s->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8740#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8741}
8742
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8743/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8744 * 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]8745 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8746 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8747 * 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]8748 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8749 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8750 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8751 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8752int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8753{
8754 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8755 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8756 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8757
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8758 if (!uri_auth)
8759 return 0;
8760
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8761 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]8762 return 0;
8763
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8764 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8765 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8766 return 0;
8767
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8768 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8769 return 0;
8770
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8771 return 1;
8772}
8773
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8774/*
8775 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8776 * By default it tries to report the error position as msg->err_pos. However if
8777 * this one is not set, it will then report msg->next, which is the last known
8778 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8779 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8780 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8781void http_capture_bad_message(struct error_snapshot *es, struct stream *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8782 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8783 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8784{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8785 struct session *sess = strm_sess(s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8786 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8787 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8788
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8789 es->len = MIN(chn->buf->i, sizeof(es->buf));
8790 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8791 len1 = MIN(len1, es->len);
8792 len2 = es->len - len1; /* remaining data if buffer wraps */
8793
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8794 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8795 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8796 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8797
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8798 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8799 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8800 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8801 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8802
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8803 es->when = date; // user-visible date
8804 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8805 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8806 es->oe = other_end;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8807 if (objt_conn(sess->origin))
8808 es->src = __objt_conn(sess->origin)->addr.from;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8809 else
8810 memset(&es->src, 0, sizeof(es->src));
8811
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8812 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8813 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8814 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8815 es->s_flags = s->flags;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8816 es->t_flags = s->txn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8817 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8818 es->b_out = chn->buf->o;
8819 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8820 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8821 es->m_clen = msg->chunk_len;
8822 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8823}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8824
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8825/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8826 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8827 * performed over the whole headers. Otherwise it must contain a valid header
8828 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8829 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8830 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8831 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8832 * -1. The value fetch stops at commas, so this function is suited for use with
8833 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8834 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8835 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8836unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8837 struct hdr_idx *idx, int occ,
8838 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8839{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8840 struct hdr_ctx local_ctx;
8841 char *ptr_hist[MAX_HDR_HISTORY];
8842 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8843 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8844 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8845
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8846 if (!ctx) {
8847 local_ctx.idx = 0;
8848 ctx = &local_ctx;
8849 }
8850
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8851 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8852 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8853 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8854 occ--;
8855 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8856 *vptr = ctx->line + ctx->val;
8857 *vlen = ctx->vlen;
8858 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8859 }
8860 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8861 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8862 }
8863
8864 /* negative occurrence, we scan all the list then walk back */
8865 if (-occ > MAX_HDR_HISTORY)
8866 return 0;
8867
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8868 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8869 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8870 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8871 len_hist[hist_ptr] = ctx->vlen;
8872 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8873 hist_ptr = 0;
8874 found++;
8875 }
8876 if (-occ > found)
8877 return 0;
8878 /* 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]8879 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8880 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8881 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8882 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8883 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8884 if (hist_ptr >= MAX_HDR_HISTORY)
8885 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8886 *vptr = ptr_hist[hist_ptr];
8887 *vlen = len_hist[hist_ptr];
8888 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8889}
8890
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8891/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8892 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8893 * performed over the whole headers. Otherwise it must contain a valid header
8894 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8895 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8896 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8897 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8898 * -1. This function differs from http_get_hdr() in that it only returns full
8899 * line header values and does not stop at commas.
8900 * The return value is 0 if nothing was found, or non-zero otherwise.
8901 */
8902unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8903 struct hdr_idx *idx, int occ,
8904 struct hdr_ctx *ctx, char **vptr, int *vlen)
8905{
8906 struct hdr_ctx local_ctx;
8907 char *ptr_hist[MAX_HDR_HISTORY];
8908 int len_hist[MAX_HDR_HISTORY];
8909 unsigned int hist_ptr;
8910 int found;
8911
8912 if (!ctx) {
8913 local_ctx.idx = 0;
8914 ctx = &local_ctx;
8915 }
8916
8917 if (occ >= 0) {
8918 /* search from the beginning */
8919 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8920 occ--;
8921 if (occ <= 0) {
8922 *vptr = ctx->line + ctx->val;
8923 *vlen = ctx->vlen;
8924 return 1;
8925 }
8926 }
8927 return 0;
8928 }
8929
8930 /* negative occurrence, we scan all the list then walk back */
8931 if (-occ > MAX_HDR_HISTORY)
8932 return 0;
8933
8934 found = hist_ptr = 0;
8935 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8936 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8937 len_hist[hist_ptr] = ctx->vlen;
8938 if (++hist_ptr >= MAX_HDR_HISTORY)
8939 hist_ptr = 0;
8940 found++;
8941 }
8942 if (-occ > found)
8943 return 0;
8944 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
8945 * find occurrence -occ, so we have to check [hist_ptr+occ].
8946 */
8947 hist_ptr += occ;
8948 if (hist_ptr >= MAX_HDR_HISTORY)
8949 hist_ptr -= MAX_HDR_HISTORY;
8950 *vptr = ptr_hist[hist_ptr];
8951 *vlen = len_hist[hist_ptr];
8952 return 1;
8953}
8954
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8955/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8956 * Print a debug line with a header. Always stop at the first CR or LF char,
8957 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8958 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8959 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8960void debug_hdr(const char *dir, struct stream *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8961{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8962 struct session *sess = strm_sess(s);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8963 int max;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8964
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8965 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8966 dir,
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8967 objt_conn(sess->origin) ? (unsigned short)objt_conn(sess->origin)->t.sock.fd : -1,
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]8968 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]8969
8970 for (max = 0; start + max < end; max++)
8971 if (start[max] == '\r' || start[max] == '\n')
8972 break;
8973
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8974 UBOUND(max, trash.size - trash.len - 3);
8975 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8976 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8977 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8978}
8979
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8980
8981/* Allocate a new HTTP transaction for stream <s> unless there is one already.
8982 * The hdr_idx is allocated as well. In case of allocation failure, everything
8983 * allocated is freed and NULL is returned. Otherwise the new transaction is
8984 * assigned to the stream and returned.
8985 */
8986struct http_txn *http_alloc_txn(struct stream *s)
8987{
8988 struct http_txn *txn = s->txn;
8989
8990 if (txn)
8991 return txn;
8992
8993 txn = pool_alloc2(pool2_http_txn);
8994 if (!txn)
8995 return txn;
8996
8997 txn->hdr_idx.size = global.tune.max_http_hdr;
8998 txn->hdr_idx.v = pool_alloc2(pool2_hdr_idx);
8999 if (!txn->hdr_idx.v) {
9000 pool_free2(pool2_http_txn, txn);
9001 return NULL;
9002 }
9003
9004 s->txn = txn;
9005 return txn;
9006}
9007
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9008/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]9009 * Initialize a new HTTP transaction for stream <s>. It is assumed that all
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9010 * the required fields are properly allocated and that we only need to (re)init
9011 * them. This should be used before processing any new request.
9012 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]9013void http_init_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9014{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]9015 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9016 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9017
9018 txn->flags = 0;
9019 txn->status = -1;
9020
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]9021 txn->cookie_first_date = 0;
9022 txn->cookie_last_date = 0;
9023
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]9024 txn->sessid = NULL;
9025 txn->srv_cookie = NULL;
9026 txn->cli_cookie = NULL;
9027 txn->uri = NULL;
9028
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]9029 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]9030 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]9031 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]9032 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]9033 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]9034 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]9035 txn->req.chunk_len = 0LL;
9036 txn->req.body_len = 0LL;
9037 txn->rsp.chunk_len = 0LL;
9038 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9039 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
9040 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9041 txn->req.chn = &s->req;
9042 txn->rsp.chn = &s->res;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9043
9044 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9045
9046 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
9047 if (fe->options2 & PR_O2_REQBUG_OK)
9048 txn->req.err_pos = -1; /* let buggy requests pass */
9049
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9050 if (txn->hdr_idx.v)
9051 hdr_idx_init(&txn->hdr_idx);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]9052
9053 vars_init(&s->vars_txn, SCOPE_TXN);
9054 vars_init(&s->vars_reqres, SCOPE_REQ);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9055}
9056
9057/* to be used at the end of a transaction */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]9058void http_end_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9059{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]9060 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9061 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9062
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]9063 /* release any possible compression context */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]9064 if (s->flags & SF_COMP_READY)
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]9065 s->comp_algo->end(&s->comp_ctx);
9066 s->comp_algo = NULL;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]9067 s->flags &= ~SF_COMP_READY;
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]9068
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9069 /* these ones will have been dynamically allocated */
9070 pool_free2(pool2_requri, txn->uri);
9071 pool_free2(pool2_capture, txn->cli_cookie);
9072 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]9073 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]9074 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9075
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]9076 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]9077 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9078 txn->uri = NULL;
9079 txn->srv_cookie = NULL;
9080 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9081
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]9082 if (s->req_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9083 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]9084 for (h = fe->req_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]9085 pool_free2(h->pool, s->req_cap[h->index]);
9086 memset(s->req_cap, 0, fe->nb_req_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9087 }
9088
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]9089 if (s->res_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9090 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]9091 for (h = fe->rsp_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]9092 pool_free2(h->pool, s->res_cap[h->index]);
9093 memset(s->res_cap, 0, fe->nb_rsp_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9094 }
9095
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]9096 vars_prune(&s->vars_txn, s);
9097 vars_prune(&s->vars_reqres, s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9098}
9099
9100/* to be used at the end of a transaction to prepare a new one */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]9101void http_reset_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9102{
9103 http_end_txn(s);
9104 http_init_txn(s);
9105
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]9106 /* reinitialise the current rule list pointer to NULL. We are sure that
9107 * any rulelist match the NULL pointer.
9108 */
9109 s->current_rule_list = NULL;
9110
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9111 s->be = strm_fe(s);
9112 s->logs.logwait = strm_fe(s)->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]9113 s->logs.level = 0;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]9114 stream_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]9115 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]9116 /* re-init store persistence */
9117 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]9118 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]9119
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9120 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9121
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9122 s->req.flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9123
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]9124 /* We must trim any excess data from the response buffer, because we
9125 * may have blocked an invalid response from a server that we don't
9126 * want to accidentely forward once we disable the analysers, nor do
9127 * we want those data to come along with next response. A typical
9128 * example of such data would be from a buggy server responding to
9129 * a HEAD with some data, or sending more than the advertised
9130 * content-length.
9131 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9132 if (unlikely(s->res.buf->i))
9133 s->res.buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]9134
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9135 s->req.rto = strm_fe(s)->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9136 s->req.wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9137
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9138 s->res.rto = TICK_ETERNITY;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9139 s->res.wto = strm_fe(s)->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9140
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9141 s->req.rex = TICK_ETERNITY;
9142 s->req.wex = TICK_ETERNITY;
9143 s->req.analyse_exp = TICK_ETERNITY;
9144 s->res.rex = TICK_ETERNITY;
9145 s->res.wex = TICK_ETERNITY;
9146 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9147}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]9148
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9149void free_http_res_rules(struct list *r)
9150{
9151 struct http_res_rule *tr, *pr;
9152
9153 list_for_each_entry_safe(pr, tr, r, list) {
9154 LIST_DEL(&pr->list);
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9155 regex_free(&pr->arg.hdr_add.re);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9156 free(pr);
9157 }
9158}
9159
9160void free_http_req_rules(struct list *r)
9161{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9162 struct http_req_rule *tr, *pr;
9163
9164 list_for_each_entry_safe(pr, tr, r, list) {
9165 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9166 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9167 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9168
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9169 regex_free(&pr->arg.hdr_add.re);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9170 free(pr);
9171 }
9172}
9173
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9174/* parse an "http-request" rule */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9175struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
9176{
9177 struct http_req_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9178 struct http_req_action_kw *custom = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9179 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9180 char *error;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9181
9182 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
9183 if (!rule) {
9184 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9185 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9186 }
9187
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9188 rule->deny_status = HTTP_ERR_403;
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9189 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9190 rule->action = HTTP_REQ_ACT_ALLOW;
9191 cur_arg = 1;
Willy Tarreau5bd67592014-04-28 22:00:46 +0200[diff] [blame]9192 } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block")) {
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9193 int code;
9194 int hc;
9195
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9196 rule->action = HTTP_REQ_ACT_DENY;
9197 cur_arg = 1;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9198 if (strcmp(args[cur_arg], "deny_status") == 0) {
9199 cur_arg++;
9200 if (!args[cur_arg]) {
9201 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing status code.\n",
9202 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9203 goto out_err;
9204 }
9205
9206 code = atol(args[cur_arg]);
9207 cur_arg++;
9208 for (hc = 0; hc < HTTP_ERR_SIZE; hc++) {
9209 if (http_err_codes[hc] == code) {
9210 rule->deny_status = hc;
9211 break;
9212 }
9213 }
9214
9215 if (hc >= HTTP_ERR_SIZE) {
9216 Warning("parsing [%s:%d] : status code %d not handled, using default code 403.\n",
9217 file, linenum, code);
9218 }
9219 }
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]9220 } else if (!strcmp(args[0], "tarpit")) {
9221 rule->action = HTTP_REQ_ACT_TARPIT;
9222 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9223 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9224 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9225 cur_arg = 1;
9226
9227 while(*args[cur_arg]) {
9228 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9229 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9230 cur_arg+=2;
9231 continue;
9232 } else
9233 break;
9234 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9235 } else if (!strcmp(args[0], "set-nice")) {
9236 rule->action = HTTP_REQ_ACT_SET_NICE;
9237 cur_arg = 1;
9238
9239 if (!*args[cur_arg] ||
9240 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9241 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
9242 file, linenum, args[0]);
9243 goto out_err;
9244 }
9245 rule->arg.nice = atoi(args[cur_arg]);
9246 if (rule->arg.nice < -1024)
9247 rule->arg.nice = -1024;
9248 else if (rule->arg.nice > 1024)
9249 rule->arg.nice = 1024;
9250 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9251 } else if (!strcmp(args[0], "set-tos")) {
9252#ifdef IP_TOS
9253 char *err;
9254 rule->action = HTTP_REQ_ACT_SET_TOS;
9255 cur_arg = 1;
9256
9257 if (!*args[cur_arg] ||
9258 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9259 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
9260 file, linenum, args[0]);
9261 goto out_err;
9262 }
9263
9264 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9265 if (err && *err != '\0') {
9266 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
9267 file, linenum, err, args[0]);
9268 goto out_err;
9269 }
9270 cur_arg++;
9271#else
9272 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9273 goto out_err;
9274#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9275 } else if (!strcmp(args[0], "set-mark")) {
9276#ifdef SO_MARK
9277 char *err;
9278 rule->action = HTTP_REQ_ACT_SET_MARK;
9279 cur_arg = 1;
9280
9281 if (!*args[cur_arg] ||
9282 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9283 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
9284 file, linenum, args[0]);
9285 goto out_err;
9286 }
9287
9288 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9289 if (err && *err != '\0') {
9290 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
9291 file, linenum, err, args[0]);
9292 goto out_err;
9293 }
9294 cur_arg++;
9295 global.last_checks |= LSTCHK_NETADM;
9296#else
9297 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9298 goto out_err;
9299#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9300 } else if (!strcmp(args[0], "set-log-level")) {
9301 rule->action = HTTP_REQ_ACT_SET_LOGL;
9302 cur_arg = 1;
9303
9304 if (!*args[cur_arg] ||
9305 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9306 bad_log_level:
9307 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
9308 file, linenum, args[0]);
9309 goto out_err;
9310 }
9311 if (strcmp(args[cur_arg], "silent") == 0)
9312 rule->arg.loglevel = -1;
9313 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
9314 goto bad_log_level;
9315 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9316 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
9317 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
9318 cur_arg = 1;
9319
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]9320 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9321 (*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]9322 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9323 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9324 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9325 }
9326
9327 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9328 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9329 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]9330
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9331 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9332 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]9333 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9334 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9335 free(proxy->conf.lfs_file);
9336 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9337 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9338 cur_arg += 2;
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9339 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
9340 rule->action = args[0][8] == 'h' ? HTTP_REQ_ACT_REPLACE_HDR : HTTP_REQ_ACT_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9341 cur_arg = 1;
9342
9343 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann92df3702014-06-24 11:10:00 +0200[diff] [blame]9344 (*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]9345 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
9346 file, linenum, args[0]);
9347 goto out_err;
9348 }
9349
9350 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9351 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9352 LIST_INIT(&rule->arg.hdr_add.fmt);
9353
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9354 error = NULL;
9355 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9356 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9357 args[cur_arg + 1], error);
9358 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9359 goto out_err;
9360 }
9361
9362 proxy->conf.args.ctx = ARGC_HRQ;
9363 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9364 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9365 file, linenum);
9366
9367 free(proxy->conf.lfs_file);
9368 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9369 proxy->conf.lfs_line = proxy->conf.args.line;
9370 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9371 } else if (strcmp(args[0], "del-header") == 0) {
9372 rule->action = HTTP_REQ_ACT_DEL_HDR;
9373 cur_arg = 1;
9374
9375 if (!*args[cur_arg] ||
9376 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9377 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9378 file, linenum, args[0]);
9379 goto out_err;
9380 }
9381
9382 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9383 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9384
9385 proxy->conf.args.ctx = ARGC_HRQ;
9386 free(proxy->conf.lfs_file);
9387 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9388 proxy->conf.lfs_line = proxy->conf.args.line;
9389 cur_arg += 1;
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9390 } else if (strncmp(args[0], "track-sc", 8) == 0 &&
9391 args[0][9] == '\0' && args[0][8] >= '0' &&
Willy Tarreaue1cfc1f2014-10-17 11:53:05 +0200[diff] [blame]9392 args[0][8] < '0' + MAX_SESS_STKCTR) { /* track-sc 0..9 */
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9393 struct sample_expr *expr;
9394 unsigned int where;
9395 char *err = NULL;
9396
9397 cur_arg = 1;
9398 proxy->conf.args.ctx = ARGC_TRK;
9399
9400 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9401 if (!expr) {
9402 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9403 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9404 free(err);
9405 goto out_err;
9406 }
9407
9408 where = 0;
9409 if (proxy->cap & PR_CAP_FE)
9410 where |= SMP_VAL_FE_HRQ_HDR;
9411 if (proxy->cap & PR_CAP_BE)
9412 where |= SMP_VAL_BE_HRQ_HDR;
9413
9414 if (!(expr->fetch->val & where)) {
9415 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule :"
9416 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9417 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9418 args[cur_arg-1], sample_src_names(expr->fetch->use));
9419 free(expr);
9420 goto out_err;
9421 }
9422
9423 if (strcmp(args[cur_arg], "table") == 0) {
9424 cur_arg++;
9425 if (!args[cur_arg]) {
9426 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing table name.\n",
9427 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9428 free(expr);
9429 goto out_err;
9430 }
9431 /* we copy the table name for now, it will be resolved later */
9432 rule->act_prm.trk_ctr.table.n = strdup(args[cur_arg]);
9433 cur_arg++;
9434 }
9435 rule->act_prm.trk_ctr.expr = expr;
9436 rule->action = HTTP_REQ_ACT_TRK_SC0 + args[0][8] - '0';
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9437 } else if (strcmp(args[0], "redirect") == 0) {
9438 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]9439 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9440
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9441 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]9442 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9443 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9444 goto out_err;
9445 }
9446
9447 /* this redirect rule might already contain a parsed condition which
9448 * we'll pass to the http-request rule.
9449 */
9450 rule->action = HTTP_REQ_ACT_REDIR;
9451 rule->arg.redir = redir;
9452 rule->cond = redir->cond;
9453 redir->cond = NULL;
9454 cur_arg = 2;
9455 return rule;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9456 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9457 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9458 rule->action = HTTP_REQ_ACT_ADD_ACL;
9459 /*
9460 * '+ 8' for 'add-acl('
9461 * '- 9' for 'add-acl(' + trailing ')'
9462 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9463 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9464
9465 cur_arg = 1;
9466
9467 if (!*args[cur_arg] ||
9468 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9469 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9470 file, linenum, args[0]);
9471 goto out_err;
9472 }
9473
9474 LIST_INIT(&rule->arg.map.key);
9475 proxy->conf.args.ctx = ARGC_HRQ;
9476 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9477 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9478 file, linenum);
9479 free(proxy->conf.lfs_file);
9480 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9481 proxy->conf.lfs_line = proxy->conf.args.line;
9482 cur_arg += 1;
9483 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9484 /* http-request del-acl(<reference (acl name)>) <key pattern> */
9485 rule->action = HTTP_REQ_ACT_DEL_ACL;
9486 /*
9487 * '+ 8' for 'del-acl('
9488 * '- 9' for 'del-acl(' + trailing ')'
9489 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9490 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9491
9492 cur_arg = 1;
9493
9494 if (!*args[cur_arg] ||
9495 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9496 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9497 file, linenum, args[0]);
9498 goto out_err;
9499 }
9500
9501 LIST_INIT(&rule->arg.map.key);
9502 proxy->conf.args.ctx = ARGC_HRQ;
9503 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9504 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9505 file, linenum);
9506 free(proxy->conf.lfs_file);
9507 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9508 proxy->conf.lfs_line = proxy->conf.args.line;
9509 cur_arg += 1;
9510 } else if (strncmp(args[0], "del-map", 7) == 0) {
9511 /* http-request del-map(<reference (map name)>) <key pattern> */
9512 rule->action = HTTP_REQ_ACT_DEL_MAP;
9513 /*
9514 * '+ 8' for 'del-map('
9515 * '- 9' for 'del-map(' + trailing ')'
9516 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9517 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9518
9519 cur_arg = 1;
9520
9521 if (!*args[cur_arg] ||
9522 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9523 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9524 file, linenum, args[0]);
9525 goto out_err;
9526 }
9527
9528 LIST_INIT(&rule->arg.map.key);
9529 proxy->conf.args.ctx = ARGC_HRQ;
9530 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9531 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9532 file, linenum);
9533 free(proxy->conf.lfs_file);
9534 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9535 proxy->conf.lfs_line = proxy->conf.args.line;
9536 cur_arg += 1;
9537 } else if (strncmp(args[0], "set-map", 7) == 0) {
9538 /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */
9539 rule->action = HTTP_REQ_ACT_SET_MAP;
9540 /*
9541 * '+ 8' for 'set-map('
9542 * '- 9' for 'set-map(' + trailing ')'
9543 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9544 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9545
9546 cur_arg = 1;
9547
9548 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9549 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9550 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9551 file, linenum, args[0]);
9552 goto out_err;
9553 }
9554
9555 LIST_INIT(&rule->arg.map.key);
9556 LIST_INIT(&rule->arg.map.value);
9557 proxy->conf.args.ctx = ARGC_HRQ;
9558
9559 /* key pattern */
9560 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9561 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9562 file, linenum);
9563
9564 /* value pattern */
9565 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9566 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9567 file, linenum);
9568 free(proxy->conf.lfs_file);
9569 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9570 proxy->conf.lfs_line = proxy->conf.args.line;
9571
9572 cur_arg += 2;
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]9573 } else if (strncmp(args[0], "set-src", 7) == 0) {
9574 struct sample_expr *expr;
9575 unsigned int where;
9576 char *err = NULL;
9577
9578 cur_arg = 1;
9579 proxy->conf.args.ctx = ARGC_HRQ;
9580
9581 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9582 if (!expr) {
9583 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9584 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9585 free(err);
9586 goto out_err;
9587 }
9588
9589 where = 0;
9590 if (proxy->cap & PR_CAP_FE)
9591 where |= SMP_VAL_FE_HRQ_HDR;
9592 if (proxy->cap & PR_CAP_BE)
9593 where |= SMP_VAL_BE_HRQ_HDR;
9594
9595 if (!(expr->fetch->val & where)) {
9596 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule :"
9597 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9598 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9599 args[cur_arg-1], sample_src_names(expr->fetch->use));
9600 free(expr);
9601 goto out_err;
9602 }
9603
9604 rule->arg.act.p[0] = expr;
9605 rule->action = HTTP_REQ_ACT_SET_SRC;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9606 } else if (((custom = action_http_req_custom(args[0])) != NULL)) {
9607 char *errmsg = NULL;
9608 cur_arg = 1;
9609 /* try in the module list */
9610 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9611 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9612 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9613 free(errmsg);
9614 goto out_err;
9615 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9616 } else {
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]9617 Alert("parsing [%s:%d]: 'http-request' expects 'allow', 'deny', 'auth', 'redirect', 'tarpit', 'add-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', 'set-tos', 'set-mark', 'set-log-level', 'add-acl', 'del-acl', 'del-map', 'set-map', 'set-var', 'set-src', but got '%s'%s.\n",
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9618 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9619 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9620 }
9621
9622 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9623 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9624 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9625
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9626 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9627 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
9628 file, linenum, args[0], errmsg);
9629 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9630 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9631 }
9632 rule->cond = cond;
9633 }
9634 else if (*args[cur_arg]) {
9635 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
9636 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9637 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9638 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9639 }
9640
9641 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9642 out_err:
9643 free(rule);
9644 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9645}
9646
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9647/* parse an "http-respose" rule */
9648struct http_res_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
9649{
9650 struct http_res_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9651 struct http_res_action_kw *custom = NULL;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9652 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9653 char *error;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9654
9655 rule = calloc(1, sizeof(*rule));
9656 if (!rule) {
9657 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
9658 goto out_err;
9659 }
9660
9661 if (!strcmp(args[0], "allow")) {
9662 rule->action = HTTP_RES_ACT_ALLOW;
9663 cur_arg = 1;
9664 } else if (!strcmp(args[0], "deny")) {
9665 rule->action = HTTP_RES_ACT_DENY;
9666 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9667 } else if (!strcmp(args[0], "set-nice")) {
9668 rule->action = HTTP_RES_ACT_SET_NICE;
9669 cur_arg = 1;
9670
9671 if (!*args[cur_arg] ||
9672 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9673 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
9674 file, linenum, args[0]);
9675 goto out_err;
9676 }
9677 rule->arg.nice = atoi(args[cur_arg]);
9678 if (rule->arg.nice < -1024)
9679 rule->arg.nice = -1024;
9680 else if (rule->arg.nice > 1024)
9681 rule->arg.nice = 1024;
9682 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9683 } else if (!strcmp(args[0], "set-tos")) {
9684#ifdef IP_TOS
9685 char *err;
9686 rule->action = HTTP_RES_ACT_SET_TOS;
9687 cur_arg = 1;
9688
9689 if (!*args[cur_arg] ||
9690 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9691 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9692 file, linenum, args[0]);
9693 goto out_err;
9694 }
9695
9696 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9697 if (err && *err != '\0') {
9698 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9699 file, linenum, err, args[0]);
9700 goto out_err;
9701 }
9702 cur_arg++;
9703#else
9704 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9705 goto out_err;
9706#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9707 } else if (!strcmp(args[0], "set-mark")) {
9708#ifdef SO_MARK
9709 char *err;
9710 rule->action = HTTP_RES_ACT_SET_MARK;
9711 cur_arg = 1;
9712
9713 if (!*args[cur_arg] ||
9714 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9715 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9716 file, linenum, args[0]);
9717 goto out_err;
9718 }
9719
9720 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9721 if (err && *err != '\0') {
9722 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9723 file, linenum, err, args[0]);
9724 goto out_err;
9725 }
9726 cur_arg++;
9727 global.last_checks |= LSTCHK_NETADM;
9728#else
9729 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9730 goto out_err;
9731#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9732 } else if (!strcmp(args[0], "set-log-level")) {
9733 rule->action = HTTP_RES_ACT_SET_LOGL;
9734 cur_arg = 1;
9735
9736 if (!*args[cur_arg] ||
9737 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9738 bad_log_level:
9739 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
9740 file, linenum, args[0]);
9741 goto out_err;
9742 }
9743 if (strcmp(args[cur_arg], "silent") == 0)
9744 rule->arg.loglevel = -1;
9745 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
9746 goto bad_log_level;
9747 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9748 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
9749 rule->action = *args[0] == 'a' ? HTTP_RES_ACT_ADD_HDR : HTTP_RES_ACT_SET_HDR;
9750 cur_arg = 1;
9751
9752 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9753 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9754 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9755 file, linenum, args[0]);
9756 goto out_err;
9757 }
9758
9759 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9760 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9761 LIST_INIT(&rule->arg.hdr_add.fmt);
9762
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9763 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9764 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]9765 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9766 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9767 free(proxy->conf.lfs_file);
9768 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9769 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9770 cur_arg += 2;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9771 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9772 rule->action = args[0][8] == 'h' ? HTTP_RES_ACT_REPLACE_HDR : HTTP_RES_ACT_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9773 cur_arg = 1;
9774
9775 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann12cb00b2014-08-08 17:29:06 +0200[diff] [blame]9776 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
9777 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 3 arguments.\n",
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9778 file, linenum, args[0]);
9779 goto out_err;
9780 }
9781
9782 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9783 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9784 LIST_INIT(&rule->arg.hdr_add.fmt);
9785
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9786 error = NULL;
9787 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9788 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9789 args[cur_arg + 1], error);
9790 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9791 goto out_err;
9792 }
9793
9794 proxy->conf.args.ctx = ARGC_HRQ;
9795 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9796 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9797 file, linenum);
9798
9799 free(proxy->conf.lfs_file);
9800 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9801 proxy->conf.lfs_line = proxy->conf.args.line;
9802 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9803 } else if (strcmp(args[0], "del-header") == 0) {
9804 rule->action = HTTP_RES_ACT_DEL_HDR;
9805 cur_arg = 1;
9806
9807 if (!*args[cur_arg] ||
9808 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9809 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9810 file, linenum, args[0]);
9811 goto out_err;
9812 }
9813
9814 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9815 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9816
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9817 proxy->conf.args.ctx = ARGC_HRS;
9818 free(proxy->conf.lfs_file);
9819 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9820 proxy->conf.lfs_line = proxy->conf.args.line;
9821 cur_arg += 1;
9822 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9823 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9824 rule->action = HTTP_RES_ACT_ADD_ACL;
9825 /*
9826 * '+ 8' for 'add-acl('
9827 * '- 9' for 'add-acl(' + trailing ')'
9828 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9829 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9830
9831 cur_arg = 1;
9832
9833 if (!*args[cur_arg] ||
9834 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9835 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9836 file, linenum, args[0]);
9837 goto out_err;
9838 }
9839
9840 LIST_INIT(&rule->arg.map.key);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9841 proxy->conf.args.ctx = ARGC_HRS;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9842 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9843 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9844 file, linenum);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9845 free(proxy->conf.lfs_file);
9846 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9847 proxy->conf.lfs_line = proxy->conf.args.line;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9848
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9849 cur_arg += 1;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9850 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9851 /* http-response del-acl(<reference (acl name)>) <key pattern> */
9852 rule->action = HTTP_RES_ACT_DEL_ACL;
9853 /*
9854 * '+ 8' for 'del-acl('
9855 * '- 9' for 'del-acl(' + trailing ')'
9856 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9857 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9858
9859 cur_arg = 1;
9860
9861 if (!*args[cur_arg] ||
9862 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9863 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9864 file, linenum, args[0]);
9865 goto out_err;
9866 }
9867
9868 LIST_INIT(&rule->arg.map.key);
9869 proxy->conf.args.ctx = ARGC_HRS;
9870 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9871 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9872 file, linenum);
9873 free(proxy->conf.lfs_file);
9874 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9875 proxy->conf.lfs_line = proxy->conf.args.line;
9876 cur_arg += 1;
9877 } else if (strncmp(args[0], "del-map", 7) == 0) {
9878 /* http-response del-map(<reference (map name)>) <key pattern> */
9879 rule->action = HTTP_RES_ACT_DEL_MAP;
9880 /*
9881 * '+ 8' for 'del-map('
9882 * '- 9' for 'del-map(' + trailing ')'
9883 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9884 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9885
9886 cur_arg = 1;
9887
9888 if (!*args[cur_arg] ||
9889 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9890 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9891 file, linenum, args[0]);
9892 goto out_err;
9893 }
9894
9895 LIST_INIT(&rule->arg.map.key);
9896 proxy->conf.args.ctx = ARGC_HRS;
9897 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9898 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9899 file, linenum);
9900 free(proxy->conf.lfs_file);
9901 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9902 proxy->conf.lfs_line = proxy->conf.args.line;
9903 cur_arg += 1;
9904 } else if (strncmp(args[0], "set-map", 7) == 0) {
9905 /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */
9906 rule->action = HTTP_RES_ACT_SET_MAP;
9907 /*
9908 * '+ 8' for 'set-map('
9909 * '- 9' for 'set-map(' + trailing ')'
9910 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9911 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9912
9913 cur_arg = 1;
9914
9915 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9916 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9917 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9918 file, linenum, args[0]);
9919 goto out_err;
9920 }
9921
9922 LIST_INIT(&rule->arg.map.key);
9923 LIST_INIT(&rule->arg.map.value);
9924
9925 proxy->conf.args.ctx = ARGC_HRS;
9926
9927 /* key pattern */
9928 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9929 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9930 file, linenum);
9931
9932 /* value pattern */
9933 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9934 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9935 file, linenum);
9936
9937 free(proxy->conf.lfs_file);
9938 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9939 proxy->conf.lfs_line = proxy->conf.args.line;
9940
9941 cur_arg += 2;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]9942 } else if (strcmp(args[0], "redirect") == 0) {
9943 struct redirect_rule *redir;
9944 char *errmsg = NULL;
9945
9946 if ((redir = http_parse_redirect_rule(file, linenum, proxy, (const char **)args + 1, &errmsg, 1, 1)) == NULL) {
9947 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9948 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9949 goto out_err;
9950 }
9951
9952 /* this redirect rule might already contain a parsed condition which
9953 * we'll pass to the http-request rule.
9954 */
9955 rule->action = HTTP_RES_ACT_REDIR;
9956 rule->arg.redir = redir;
9957 rule->cond = redir->cond;
9958 redir->cond = NULL;
9959 cur_arg = 2;
9960 return rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9961 } else if (((custom = action_http_res_custom(args[0])) != NULL)) {
9962 char *errmsg = NULL;
9963 cur_arg = 1;
9964 /* try in the module list */
9965 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9966 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9967 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9968 free(errmsg);
9969 goto out_err;
9970 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9971 } else {
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]9972 Alert("parsing [%s:%d]: 'http-response' expects 'allow', 'deny', 'redirect', 'add-header', 'del-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', 'set-tos', 'set-mark', 'set-log-level', 'del-acl', 'add-acl', 'del-map', 'set-map', 'set-var' but got '%s'%s.\n",
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9973 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
9974 goto out_err;
9975 }
9976
9977 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9978 struct acl_cond *cond;
9979 char *errmsg = NULL;
9980
9981 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9982 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
9983 file, linenum, args[0], errmsg);
9984 free(errmsg);
9985 goto out_err;
9986 }
9987 rule->cond = cond;
9988 }
9989 else if (*args[cur_arg]) {
9990 Alert("parsing [%s:%d]: 'http-response %s' expects"
9991 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9992 file, linenum, args[0], args[cur_arg]);
9993 goto out_err;
9994 }
9995
9996 return rule;
9997 out_err:
9998 free(rule);
9999 return NULL;
10000}
10001
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10002/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10003 * 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]10004 * dynamic log-format rule instead of a static string. Parameter <dir> indicates
10005 * the direction of the rule, and equals 0 for request, non-zero for responses.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10006 */
10007struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]10008 const char **args, char **errmsg, int use_fmt, int dir)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10009{
10010 struct redirect_rule *rule;
10011 int cur_arg;
10012 int type = REDIRECT_TYPE_NONE;
10013 int code = 302;
10014 const char *destination = NULL;
10015 const char *cookie = NULL;
10016 int cookie_set = 0;
10017 unsigned int flags = REDIRECT_FLAG_NONE;
10018 struct acl_cond *cond = NULL;
10019
10020 cur_arg = 0;
10021 while (*(args[cur_arg])) {
10022 if (strcmp(args[cur_arg], "location") == 0) {
10023 if (!*args[cur_arg + 1])
10024 goto missing_arg;
10025
10026 type = REDIRECT_TYPE_LOCATION;
10027 cur_arg++;
10028 destination = args[cur_arg];
10029 }
10030 else if (strcmp(args[cur_arg], "prefix") == 0) {
10031 if (!*args[cur_arg + 1])
10032 goto missing_arg;
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10033 type = REDIRECT_TYPE_PREFIX;
10034 cur_arg++;
10035 destination = args[cur_arg];
10036 }
10037 else if (strcmp(args[cur_arg], "scheme") == 0) {
10038 if (!*args[cur_arg + 1])
10039 goto missing_arg;
10040
10041 type = REDIRECT_TYPE_SCHEME;
10042 cur_arg++;
10043 destination = args[cur_arg];
10044 }
10045 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
10046 if (!*args[cur_arg + 1])
10047 goto missing_arg;
10048
10049 cur_arg++;
10050 cookie = args[cur_arg];
10051 cookie_set = 1;
10052 }
10053 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
10054 if (!*args[cur_arg + 1])
10055 goto missing_arg;
10056
10057 cur_arg++;
10058 cookie = args[cur_arg];
10059 cookie_set = 0;
10060 }
10061 else if (strcmp(args[cur_arg], "code") == 0) {
10062 if (!*args[cur_arg + 1])
10063 goto missing_arg;
10064
10065 cur_arg++;
10066 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]10067 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10068 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]10069 "'%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]10070 args[cur_arg - 1], args[cur_arg]);
10071 return NULL;
10072 }
10073 }
10074 else if (!strcmp(args[cur_arg],"drop-query")) {
10075 flags |= REDIRECT_FLAG_DROP_QS;
10076 }
10077 else if (!strcmp(args[cur_arg],"append-slash")) {
10078 flags |= REDIRECT_FLAG_APPEND_SLASH;
10079 }
10080 else if (strcmp(args[cur_arg], "if") == 0 ||
10081 strcmp(args[cur_arg], "unless") == 0) {
10082 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
10083 if (!cond) {
10084 memprintf(errmsg, "error in condition: %s", *errmsg);
10085 return NULL;
10086 }
10087 break;
10088 }
10089 else {
10090 memprintf(errmsg,
10091 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
10092 args[cur_arg]);
10093 return NULL;
10094 }
10095 cur_arg++;
10096 }
10097
10098 if (type == REDIRECT_TYPE_NONE) {
10099 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
10100 return NULL;
10101 }
10102
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]10103 if (dir && type != REDIRECT_TYPE_LOCATION) {
10104 memprintf(errmsg, "response only supports redirect type 'location'");
10105 return NULL;
10106 }
10107
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10108 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
10109 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]10110 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10111
10112 if (!use_fmt) {
10113 /* old-style static redirect rule */
10114 rule->rdr_str = strdup(destination);
10115 rule->rdr_len = strlen(destination);
10116 }
10117 else {
10118 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10119
10120 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
10121 * if prefix == "/", we don't want to add anything, otherwise it
10122 * makes it hard for the user to configure a self-redirection.
10123 */
Godbachd9722032014-12-18 15:44:58 +0800[diff] [blame]10124 curproxy->conf.args.ctx = ARGC_RDR;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10125 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]10126 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]10127 dir ? (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRS_HDR : SMP_VAL_BE_HRS_HDR
10128 : (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]10129 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]10130 free(curproxy->conf.lfs_file);
10131 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
10132 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10133 }
10134 }
10135
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10136 if (cookie) {
10137 /* depending on cookie_set, either we want to set the cookie, or to clear it.
10138 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
10139 */
10140 rule->cookie_len = strlen(cookie);
10141 if (cookie_set) {
10142 rule->cookie_str = malloc(rule->cookie_len + 10);
10143 memcpy(rule->cookie_str, cookie, rule->cookie_len);
10144 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
10145 rule->cookie_len += 9;
10146 } else {
10147 rule->cookie_str = malloc(rule->cookie_len + 21);
10148 memcpy(rule->cookie_str, cookie, rule->cookie_len);
10149 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
10150 rule->cookie_len += 20;
10151 }
10152 }
10153 rule->type = type;
10154 rule->code = code;
10155 rule->flags = flags;
10156 LIST_INIT(&rule->list);
10157 return rule;
10158
10159 missing_arg:
10160 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
10161 return NULL;
10162}
10163
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10164/************************************************************************/
10165/* The code below is dedicated to ACL parsing and matching */
10166/************************************************************************/
10167
10168
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10169/* This function ensures that the prerequisites for an L7 fetch are ready,
10170 * which means that a request or response is ready. If some data is missing,
10171 * 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]10172 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
10173 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10174 *
10175 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10176 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
10177 * decide whether or not an HTTP message is present ;
10178 * 0 if the requested data cannot be fetched or if it is certain that
10179 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10180 * 1 if an HTTP message is ready
10181 */
10182static int
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10183smp_prefetch_http(struct proxy *px, struct stream *s, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10184 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10185{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10186 struct http_txn *txn;
10187 struct http_msg *msg;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10188
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]10189 /* Note: this function may only be used from places where
10190 * http_init_txn() has already been done, and implies that <s>,
10191 * <txn>, and <hdr_idx.v> are properly set. An extra check protects
10192 * against an eventual mistake in the fetch capability matrix.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10193 */
10194
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10195 if (!s)
10196 return 0;
10197 txn = s->txn;
10198
10199 if (!txn)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10200 return 0;
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10201 msg = &txn->req;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10202
10203 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10204 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10205
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10206 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10207 /* If the buffer does not leave enough free space at the end,
10208 * we must first realign it.
10209 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10210 if (s->req.buf->p > s->req.buf->data &&
10211 s->req.buf->i + s->req.buf->p > s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)
10212 buffer_slow_realign(s->req.buf);
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10213
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10214 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]10215 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10216 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10217
10218 /* Try to decode HTTP request */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10219 if (likely(msg->next < s->req.buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10220 http_msg_analyzer(msg, &txn->hdr_idx);
10221
10222 /* Still no valid request ? */
10223 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]10224 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10225 buffer_full(s->req.buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10226 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10227 }
10228 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10229 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10230 return 0;
10231 }
10232
10233 /* OK we just got a valid HTTP request. We have some minor
10234 * preparation to perform so that further checks can rely
10235 * on HTTP tests.
10236 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10237
10238 /* If the request was parsed but was too large, we must absolutely
10239 * return an error so that it is not processed. At the moment this
10240 * cannot happen, but if the parsers are to change in the future,
10241 * we want this check to be maintained.
10242 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10243 if (unlikely(s->req.buf->i + s->req.buf->p >
10244 s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10245 msg->msg_state = HTTP_MSG_ERROR;
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]10246 smp->data.sint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10247 return 1;
10248 }
10249
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10250 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10251 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]10252 s->flags |= SF_REDIRECTABLE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10253
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10254 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
10255 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10256 }
10257
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10258 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10259 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10260 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10261
10262 /* otherwise everything's ready for the request */
10263 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10264 else {
10265 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10266 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
10267 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10268 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10269 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10270 }
10271
10272 /* everything's OK */
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]10273 smp->data.sint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10274 return 1;
10275}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10276
Willy Tarreau6c616e02014-06-25 16:56:41 +0200[diff] [blame]10277/* Note: these functinos *do* modify the sample. Even in case of success, at
10278 * least the type and uint value are modified.
10279 */
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10280#define CHECK_HTTP_MESSAGE_FIRST() \
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10281 do { int r = smp_prefetch_http(smp->px, smp->strm, smp->opt, args, smp, 1); if (r <= 0) return r; } while (0)
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10282
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10283#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10284 do { int r = smp_prefetch_http(smp->px, smp->strm, smp->opt, args, smp, 0); if (r <= 0) return r; } while (0)
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10285
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10286
10287/* 1. Check on METHOD
10288 * We use the pre-parsed method if it is known, and store its number as an
10289 * integer. If it is unknown, we use the pointer and the length.
10290 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]10291static int pat_parse_meth(const char *text, struct pattern *pattern, int mflags, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10292{
10293 int len, meth;
10294
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]10295 len = strlen(text);
10296 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10297
10298 pattern->val.i = meth;
10299 if (meth == HTTP_METH_OTHER) {
Willy Tarreau912c1192014-08-29 15:15:50 +0200[diff] [blame]10300 pattern->ptr.str = (char *)text;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10301 pattern->len = len;
10302 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10303 else {
10304 pattern->ptr.str = NULL;
10305 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10306 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10307 return 1;
10308}
10309
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10310/* This function fetches the method of current HTTP request and stores
10311 * it in the global pattern struct as a chunk. There are two possibilities :
10312 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
10313 * in <len> and <ptr> is NULL ;
10314 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
10315 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10316 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10317 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10318static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10319smp_fetch_meth(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10320{
10321 int meth;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10322 struct http_txn *txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10323
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10324 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10325
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10326 meth = txn->meth;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10327 smp->type = SMP_T_METH;
10328 smp->data.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10329 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10330 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
10331 /* ensure the indexes are not affected */
10332 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10333 smp->flags |= SMP_F_CONST;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10334 smp->data.meth.str.len = txn->req.sl.rq.m_l;
10335 smp->data.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10336 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10337 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10338 return 1;
10339}
10340
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10341/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10342static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10343{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10344 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10345 struct pattern_list *lst;
10346 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10347
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10348 list_for_each_entry(lst, &expr->patterns, list) {
10349 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10350
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10351 /* well-known method */
10352 if (pattern->val.i != HTTP_METH_OTHER) {
10353 if (smp->data.meth.meth == pattern->val.i)
10354 return pattern;
10355 else
10356 continue;
10357 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10358
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10359 /* Other method, we must compare the strings */
10360 if (pattern->len != smp->data.meth.str.len)
10361 continue;
10362
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]10363 icase = expr->mflags & PAT_MF_IGNORE_CASE;
Willy Tarreau4de2a942014-08-28 20:42:57 +0200[diff] [blame]10364 if ((icase && strncasecmp(pattern->ptr.str, smp->data.meth.str.str, smp->data.meth.str.len) == 0) ||
10365 (!icase && strncmp(pattern->ptr.str, smp->data.meth.str.str, smp->data.meth.str.len) == 0))
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10366 return pattern;
10367 }
10368 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10369}
10370
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10371static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10372smp_fetch_rqver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10373{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10374 struct http_txn *txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10375 char *ptr;
10376 int len;
10377
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10378 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10379
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10380 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10381 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10382
10383 while ((len-- > 0) && (*ptr++ != '/'));
10384 if (len <= 0)
10385 return 0;
10386
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10387 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10388 smp->data.str.str = ptr;
10389 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10390
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10391 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10392 return 1;
10393}
10394
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10395static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10396smp_fetch_stver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10397{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10398 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10399 char *ptr;
10400 int len;
10401
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10402 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10403
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10404 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10405 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10406 return 0;
10407
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10408 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10409 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10410
10411 while ((len-- > 0) && (*ptr++ != '/'));
10412 if (len <= 0)
10413 return 0;
10414
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10415 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10416 smp->data.str.str = ptr;
10417 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10418
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10419 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10420 return 1;
10421}
10422
10423/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10424static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10425smp_fetch_stcode(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10426{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10427 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10428 char *ptr;
10429 int len;
10430
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10431 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10432
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10433 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10434 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10435 return 0;
10436
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10437 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10438 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10439
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]10440 smp->type = SMP_T_SINT;
10441 smp->data.sint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10442 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10443 return 1;
10444}
10445
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10446/* returns the longest available part of the body. This requires that the body
10447 * has been waited for using http-buffer-request.
10448 */
10449static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10450smp_fetch_body(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10451{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10452 struct http_txn *txn = smp->strm->txn;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10453 struct http_msg *msg;
10454 unsigned long len;
10455 unsigned long block1;
10456 char *body;
10457 struct chunk *temp;
10458
10459 CHECK_HTTP_MESSAGE_FIRST();
10460
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10461 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10462 msg = &txn->req;
10463 else
10464 msg = &txn->rsp;
10465
10466 len = http_body_bytes(msg);
10467 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
10468
10469 block1 = len;
10470 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
10471 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
10472
10473 if (block1 == len) {
10474 /* buffer is not wrapped (or empty) */
10475 smp->type = SMP_T_BIN;
10476 smp->data.str.str = body;
10477 smp->data.str.len = len;
10478 smp->flags = SMP_F_VOL_TEST | SMP_F_CONST;
10479 }
10480 else {
10481 /* buffer is wrapped, we need to defragment it */
10482 temp = get_trash_chunk();
10483 memcpy(temp->str, body, block1);
10484 memcpy(temp->str + block1, msg->chn->buf->data, len - block1);
10485 smp->type = SMP_T_BIN;
10486 smp->data.str.str = temp->str;
10487 smp->data.str.len = len;
10488 smp->flags = SMP_F_VOL_TEST;
10489 }
10490 return 1;
10491}
10492
10493
10494/* returns the available length of the body. This requires that the body
10495 * has been waited for using http-buffer-request.
10496 */
10497static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10498smp_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]10499{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10500 struct http_txn *txn = smp->strm->txn;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10501 struct http_msg *msg;
10502
10503 CHECK_HTTP_MESSAGE_FIRST();
10504
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10505 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10506 msg = &txn->req;
10507 else
10508 msg = &txn->rsp;
10509
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]10510 smp->type = SMP_T_SINT;
10511 smp->data.sint = http_body_bytes(msg);
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10512
10513 smp->flags = SMP_F_VOL_TEST;
10514 return 1;
10515}
10516
10517
10518/* returns the advertised length of the body, or the advertised size of the
10519 * chunks available in the buffer. This requires that the body has been waited
10520 * for using http-buffer-request.
10521 */
10522static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10523smp_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]10524{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10525 struct http_txn *txn = smp->strm->txn;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10526 struct http_msg *msg;
10527
10528 CHECK_HTTP_MESSAGE_FIRST();
10529
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10530 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10531 msg = &txn->req;
10532 else
10533 msg = &txn->rsp;
10534
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]10535 smp->type = SMP_T_SINT;
10536 smp->data.sint = msg->body_len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10537
10538 smp->flags = SMP_F_VOL_TEST;
10539 return 1;
10540}
10541
10542
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10543/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10544static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10545smp_fetch_url(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10546{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10547 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10548
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10549 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10550
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10551 txn = smp->strm->txn;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10552 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10553 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10554 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10555 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10556 return 1;
10557}
10558
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10559static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10560smp_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]10561{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10562 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10563 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10564
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10565 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10566
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10567 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10568 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]10569 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]10570 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10571
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10572 smp->type = SMP_T_IPV4;
10573 smp->data.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10574 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10575 return 1;
10576}
10577
10578static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10579smp_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]10580{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10581 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10582 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10583
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10584 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10585
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10586 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10587 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]10588 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
10589 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10590
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]10591 smp->type = SMP_T_SINT;
10592 smp->data.sint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]10593 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10594 return 1;
10595}
10596
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10597/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10598 * Accepts an optional argument of type string containing the header field name,
10599 * and an optional argument of type signed or unsigned integer to request an
10600 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10601 * headers are considered from the first one. It does not stop on commas and
10602 * returns full lines instead (useful for User-Agent or Date for example).
10603 */
10604static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10605smp_fetch_fhdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10606{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10607 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10608 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10609 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10610 int occ = 0;
10611 const char *name_str = NULL;
10612 int name_len = 0;
10613
10614 if (!ctx) {
10615 /* first call */
10616 ctx = &static_hdr_ctx;
10617 ctx->idx = 0;
10618 smp->ctx.a[0] = ctx;
10619 }
10620
10621 if (args) {
10622 if (args[0].type != ARGT_STR)
10623 return 0;
10624 name_str = args[0].data.str.str;
10625 name_len = args[0].data.str.len;
10626
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10627 if (args[1].type == ARGT_SINT)
10628 occ = args[1].data.sint;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10629 }
10630
10631 CHECK_HTTP_MESSAGE_FIRST();
10632
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10633 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10634 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]10635
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10636 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
10637 /* search for header from the beginning */
10638 ctx->idx = 0;
10639
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10640 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10641 /* no explicit occurrence and single fetch => last header by default */
10642 occ = -1;
10643
10644 if (!occ)
10645 /* prepare to report multiple occurrences for ACL fetches */
10646 smp->flags |= SMP_F_NOT_LAST;
10647
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10648 smp->type = SMP_T_STR;
10649 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10650 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.str.str, &smp->data.str.len))
10651 return 1;
10652
10653 smp->flags &= ~SMP_F_NOT_LAST;
10654 return 0;
10655}
10656
10657/* 6. Check on HTTP header count. The number of occurrences is returned.
10658 * Accepts exactly 1 argument of type string. It does not stop on commas and
10659 * returns full lines instead (useful for User-Agent or Date for example).
10660 */
10661static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10662smp_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]10663{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10664 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10665 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10666 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10667 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10668 const char *name = NULL;
10669 int len = 0;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10670
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10671 if (args && args->type == ARGT_STR) {
10672 name = args->data.str.str;
10673 len = args->data.str.len;
10674 }
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10675
10676 CHECK_HTTP_MESSAGE_FIRST();
10677
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10678 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10679 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]10680
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10681 ctx.idx = 0;
10682 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10683 while (http_find_full_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10684 cnt++;
10685
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]10686 smp->type = SMP_T_SINT;
10687 smp->data.sint = cnt;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10688 smp->flags = SMP_F_VOL_HDR;
10689 return 1;
10690}
10691
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10692static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10693smp_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]10694{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10695 struct hdr_idx *idx;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10696 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10697 const struct http_msg *msg;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10698 struct chunk *temp;
10699 char del = ',';
10700
10701 if (args && args->type == ARGT_STR)
10702 del = *args[0].data.str.str;
10703
10704 CHECK_HTTP_MESSAGE_FIRST();
10705
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10706 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10707 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]10708
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10709 temp = get_trash_chunk();
10710
10711 ctx.idx = 0;
10712 while (http_find_next_header(msg->chn->buf->p, idx, &ctx)) {
10713 if (temp->len)
10714 temp->str[temp->len++] = del;
10715 memcpy(temp->str + temp->len, ctx.line, ctx.del);
10716 temp->len += ctx.del;
10717 }
10718
10719 smp->type = SMP_T_STR;
10720 smp->data.str.str = temp->str;
10721 smp->data.str.len = temp->len;
10722 smp->flags = SMP_F_VOL_HDR;
10723 return 1;
10724}
10725
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10726/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10727 * Accepts an optional argument of type string containing the header field name,
10728 * and an optional argument of type signed or unsigned integer to request an
10729 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10730 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10731 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10732static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10733smp_fetch_hdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10734{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10735 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10736 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10737 const struct http_msg *msg;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10738 int occ = 0;
10739 const char *name_str = NULL;
10740 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10741
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10742 if (!ctx) {
10743 /* first call */
10744 ctx = &static_hdr_ctx;
10745 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]10746 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10747 }
10748
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10749 if (args) {
10750 if (args[0].type != ARGT_STR)
10751 return 0;
10752 name_str = args[0].data.str.str;
10753 name_len = args[0].data.str.len;
10754
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10755 if (args[1].type == ARGT_SINT)
10756 occ = args[1].data.sint;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10757 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10758
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10759 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10760
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10761 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10762 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]10763
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10764 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10765 /* search for header from the beginning */
10766 ctx->idx = 0;
10767
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10768 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10769 /* no explicit occurrence and single fetch => last header by default */
10770 occ = -1;
10771
10772 if (!occ)
10773 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10774 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]10775
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10776 smp->type = SMP_T_STR;
10777 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10778 if (http_get_hdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.str.str, &smp->data.str.len))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10779 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10780
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10781 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10782 return 0;
10783}
10784
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10785/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10786 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10787 */
10788static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10789smp_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]10790{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10791 struct hdr_idx *idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10792 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10793 const struct http_msg *msg;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10794 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10795 const char *name = NULL;
10796 int len = 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10797
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10798 if (args && args->type == ARGT_STR) {
10799 name = args->data.str.str;
10800 len = args->data.str.len;
10801 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10802
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10803 CHECK_HTTP_MESSAGE_FIRST();
10804
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10805 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10806 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]10807
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10808 ctx.idx = 0;
10809 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10810 while (http_find_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10811 cnt++;
10812
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]10813 smp->type = SMP_T_SINT;
10814 smp->data.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10815 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10816 return 1;
10817}
10818
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10819/* Fetch an HTTP header's integer value. The integer value is returned. It
10820 * takes a mandatory argument of type string and an optional one of type int
10821 * to designate a specific occurrence. It returns an unsigned integer, which
10822 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10823 */
10824static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10825smp_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]10826{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10827 int ret = smp_fetch_hdr(args, smp, kw, private);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10828
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10829 if (ret > 0) {
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]10830 smp->type = SMP_T_SINT;
10831 smp->data.sint = strl2ic(smp->data.str.str, smp->data.str.len);
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10832 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10833
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10834 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10835}
10836
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10837/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
10838 * and an optional one of type int to designate a specific occurrence.
10839 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10840 */
10841static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10842smp_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]10843{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10844 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10845
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10846 while ((ret = smp_fetch_hdr(args, smp, kw, private)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10847 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
10848 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10849 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10850 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10851 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10852 if (smp->data.str.len < temp->size - 1) {
10853 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
10854 temp->str[smp->data.str.len] = '\0';
10855 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
10856 smp->type = SMP_T_IPV6;
10857 break;
10858 }
10859 }
10860 }
10861
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10862 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10863 if (!(smp->flags & SMP_F_NOT_LAST))
10864 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10865 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10866 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10867}
10868
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10869/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
10870 * the first '/' after the possible hostname, and ends before the possible '?'.
10871 */
10872static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10873smp_fetch_path(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10874{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10875 struct http_txn *txn;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10876 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10877
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10878 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10879
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10880 txn = smp->strm->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10881 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]10882 ptr = http_get_path(txn);
10883 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10884 return 0;
10885
10886 /* OK, we got the '/' ! */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10887 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10888 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10889
10890 while (ptr < end && *ptr != '?')
10891 ptr++;
10892
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10893 smp->data.str.len = ptr - smp->data.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10894 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10895 return 1;
10896}
10897
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10898/* This produces a concatenation of the first occurrence of the Host header
10899 * followed by the path component if it begins with a slash ('/'). This means
10900 * that '*' will not be added, resulting in exactly the first Host entry.
10901 * If no Host header is found, then the path is returned as-is. The returned
10902 * 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]10903 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10904 */
10905static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10906smp_fetch_base(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10907{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10908 struct http_txn *txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10909 char *ptr, *end, *beg;
10910 struct hdr_ctx ctx;
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10911 struct chunk *temp;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10912
10913 CHECK_HTTP_MESSAGE_FIRST();
10914
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10915 txn = smp->strm->txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10916 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10917 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]10918 return smp_fetch_path(args, smp, kw, private);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10919
10920 /* 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]10921 temp = get_trash_chunk();
10922 memcpy(temp->str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10923 smp->type = SMP_T_STR;
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10924 smp->data.str.str = temp->str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10925 smp->data.str.len = ctx.vlen;
10926
10927 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10928 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]10929 beg = http_get_path(txn);
10930 if (!beg)
10931 beg = end;
10932
10933 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10934
10935 if (beg < ptr && *beg == '/') {
10936 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
10937 smp->data.str.len += ptr - beg;
10938 }
10939
10940 smp->flags = SMP_F_VOL_1ST;
10941 return 1;
10942}
10943
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10944/* This produces a 32-bit hash of the concatenation of the first occurrence of
10945 * the Host header followed by the path component if it begins with a slash ('/').
10946 * This means that '*' will not be added, resulting in exactly the first Host
10947 * 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]10948 * is hashed using the path hash followed by a full avalanche hash and provides a
10949 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10950 * high-traffic sites without having to store whole paths.
10951 */
Thierry FOURNIER055b9d52014-07-15 16:11:07 +0200[diff] [blame]10952int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10953smp_fetch_base32(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10954{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10955 struct http_txn *txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10956 struct hdr_ctx ctx;
10957 unsigned int hash = 0;
10958 char *ptr, *beg, *end;
10959 int len;
10960
10961 CHECK_HTTP_MESSAGE_FIRST();
10962
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10963 txn = smp->strm->txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10964 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10965 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]10966 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10967 ptr = ctx.line + ctx.val;
10968 len = ctx.vlen;
10969 while (len--)
10970 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10971 }
10972
10973 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10974 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]10975 beg = http_get_path(txn);
10976 if (!beg)
10977 beg = end;
10978
10979 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10980
10981 if (beg < ptr && *beg == '/') {
10982 while (beg < ptr)
10983 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10984 }
10985 hash = full_hash(hash);
10986
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]10987 smp->type = SMP_T_SINT;
10988 smp->data.sint = hash;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10989 smp->flags = SMP_F_VOL_1ST;
10990 return 1;
10991}
10992
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10993/* 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]10994 * path as returned by smp_fetch_base32(). The idea is to have per-source and
10995 * per-path counters. The result is a binary block from 8 to 20 bytes depending
10996 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10997 * that in environments where IPv6 is insignificant, truncating the output to
10998 * 8 bytes would still work.
10999 */
11000static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11001smp_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]11002{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]11003 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11004 struct connection *cli_conn = objt_conn(smp->sess->origin);
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11005
11006 if (!cli_conn)
11007 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]11008
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11009 if (!smp_fetch_base32(args, smp, kw, private))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]11010 return 0;
11011
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]11012 temp = get_trash_chunk();
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11013 *(unsigned int *)temp->str = htonl(smp->data.sint);
Willy Tarreau5ad6e1d2014-07-15 21:34:06 +0200[diff] [blame]11014 temp->len += sizeof(unsigned int);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]11015
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11016 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]11017 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11018 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]11019 temp->len += 4;
11020 break;
11021 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11022 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]11023 temp->len += 16;
11024 break;
11025 default:
11026 return 0;
11027 }
11028
11029 smp->data.str = *temp;
11030 smp->type = SMP_T_BIN;
11031 return 1;
11032}
11033
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]11034/* Extracts the query string, which comes after the question mark '?'. If no
11035 * question mark is found, nothing is returned. Otherwise it returns a sample
11036 * of type string carrying the whole query string.
11037 */
11038static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11039smp_fetch_query(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]11040{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11041 struct http_txn *txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]11042 char *ptr, *end;
11043
11044 CHECK_HTTP_MESSAGE_FIRST();
11045
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11046 txn = smp->strm->txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]11047 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
11048 end = ptr + txn->req.sl.rq.u_l;
11049
11050 /* look up the '?' */
11051 do {
11052 if (ptr == end)
11053 return 0;
11054 } while (*ptr++ != '?');
11055
11056 smp->type = SMP_T_STR;
11057 smp->data.str.str = ptr;
11058 smp->data.str.len = end - ptr;
11059 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
11060 return 1;
11061}
11062
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]11063static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11064smp_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]11065{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]11066 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
11067 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
11068 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]11069
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11070 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]11071
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11072 smp->type = SMP_T_BOOL;
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11073 smp->data.sint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]11074 return 1;
11075}
11076
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]11077/* return a valid test if the current request is the first one on the connection */
11078static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11079smp_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]11080{
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11081 smp->type = SMP_T_BOOL;
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11082 smp->data.sint = !(smp->strm->txn->flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]11083 return 1;
11084}
11085
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11086/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11087static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11088smp_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]11089{
11090
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11091 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11092 return 0;
11093
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]11094 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11095
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11096 if (!get_http_auth(smp->strm))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11097 return 0;
11098
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11099 smp->type = SMP_T_BOOL;
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11100 smp->data.sint = check_user(args->data.usr, smp->strm->txn->auth.user,
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11101 smp->strm->txn->auth.pass);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11102 return 1;
11103}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11104
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11105/* Accepts exactly 1 argument of type userlist */
11106static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11107smp_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]11108{
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11109 if (!args || args->type != ARGT_USR)
11110 return 0;
11111
11112 CHECK_HTTP_MESSAGE_FIRST();
11113
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11114 if (!get_http_auth(smp->strm))
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11115 return 0;
11116
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11117 /* if the user does not belong to the userlist or has a wrong password,
11118 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]11119 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11120 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11121 if (!check_user(args->data.usr, smp->strm->txn->auth.user,
11122 smp->strm->txn->auth.pass))
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]11123 return 0;
11124
11125 /* pat_match_auth() will need the user list */
11126 smp->ctx.a[0] = args->data.usr;
11127
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11128 smp->type = SMP_T_STR;
11129 smp->flags = SMP_F_CONST;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11130 smp->data.str.str = smp->strm->txn->auth.user;
11131 smp->data.str.len = strlen(smp->strm->txn->auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11132
11133 return 1;
11134}
11135
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11136/* Try to find the next occurrence of a cookie name in a cookie header value.
11137 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
11138 * the cookie value is returned into *value and *value_l, and the function
11139 * returns a pointer to the next pointer to search from if the value was found.
11140 * Otherwise if the cookie was not found, NULL is returned and neither value
11141 * nor value_l are touched. The input <hdr> string should first point to the
11142 * header's value, and the <hdr_end> pointer must point to the first character
11143 * not part of the value. <list> must be non-zero if value may represent a list
11144 * of values (cookie headers). This makes it faster to abort parsing when no
11145 * list is expected.
11146 */
11147static char *
11148extract_cookie_value(char *hdr, const char *hdr_end,
11149 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]11150 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11151{
11152 char *equal, *att_end, *att_beg, *val_beg, *val_end;
11153 char *next;
11154
11155 /* we search at least a cookie name followed by an equal, and more
11156 * generally something like this :
11157 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
11158 */
11159 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
11160 /* Iterate through all cookies on this line */
11161
11162 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
11163 att_beg++;
11164
11165 /* find att_end : this is the first character after the last non
11166 * space before the equal. It may be equal to hdr_end.
11167 */
11168 equal = att_end = att_beg;
11169
11170 while (equal < hdr_end) {
11171 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
11172 break;
11173 if (http_is_spht[(unsigned char)*equal++])
11174 continue;
11175 att_end = equal;
11176 }
11177
11178 /* here, <equal> points to '=', a delimitor or the end. <att_end>
11179 * is between <att_beg> and <equal>, both may be identical.
11180 */
11181
11182 /* look for end of cookie if there is an equal sign */
11183 if (equal < hdr_end && *equal == '=') {
11184 /* look for the beginning of the value */
11185 val_beg = equal + 1;
11186 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
11187 val_beg++;
11188
11189 /* find the end of the value, respecting quotes */
11190 next = find_cookie_value_end(val_beg, hdr_end);
11191
11192 /* make val_end point to the first white space or delimitor after the value */
11193 val_end = next;
11194 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
11195 val_end--;
11196 } else {
11197 val_beg = val_end = next = equal;
11198 }
11199
11200 /* We have nothing to do with attributes beginning with '$'. However,
11201 * they will automatically be removed if a header before them is removed,
11202 * since they're supposed to be linked together.
11203 */
11204 if (*att_beg == '$')
11205 continue;
11206
11207 /* Ignore cookies with no equal sign */
11208 if (equal == next)
11209 continue;
11210
11211 /* Now we have the cookie name between att_beg and att_end, and
11212 * its value between val_beg and val_end.
11213 */
11214
11215 if (att_end - att_beg == cookie_name_l &&
11216 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
11217 /* let's return this value and indicate where to go on from */
11218 *value = val_beg;
11219 *value_l = val_end - val_beg;
11220 return next + 1;
11221 }
11222
11223 /* Set-Cookie headers only have the name in the first attr=value part */
11224 if (!list)
11225 break;
11226 }
11227
11228 return NULL;
11229}
11230
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11231/* Fetch a captured HTTP request header. The index is the position of
11232 * the "capture" option in the configuration file
11233 */
11234static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11235smp_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]11236{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11237 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11238 int idx;
11239
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11240 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11241 return 0;
11242
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11243 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11244
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11245 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]11246 return 0;
11247
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11248 smp->type = SMP_T_STR;
11249 smp->flags |= SMP_F_CONST;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11250 smp->data.str.str = smp->strm->req_cap[idx];
11251 smp->data.str.len = strlen(smp->strm->req_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11252
11253 return 1;
11254}
11255
11256/* Fetch a captured HTTP response header. The index is the position of
11257 * the "capture" option in the configuration file
11258 */
11259static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11260smp_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]11261{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11262 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11263 int idx;
11264
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11265 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11266 return 0;
11267
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11268 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11269
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11270 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]11271 return 0;
11272
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11273 smp->type = SMP_T_STR;
11274 smp->flags |= SMP_F_CONST;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11275 smp->data.str.str = smp->strm->res_cap[idx];
11276 smp->data.str.len = strlen(smp->strm->res_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11277
11278 return 1;
11279}
11280
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11281/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
11282static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11283smp_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]11284{
11285 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11286 struct http_txn *txn = smp->strm->txn;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11287 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11288
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11289 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11290 return 0;
11291
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11292 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11293
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11294 while (*ptr != ' ' && *ptr != '\0') /* find first space */
11295 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11296
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11297 temp = get_trash_chunk();
11298 temp->str = txn->uri;
11299 temp->len = ptr - txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11300 smp->data.str = *temp;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11301 smp->type = SMP_T_STR;
11302 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11303
11304 return 1;
11305
11306}
11307
11308/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
11309static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11310smp_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]11311{
11312 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11313 struct http_txn *txn = smp->strm->txn;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11314 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11315
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11316 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11317 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11318
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11319 ptr = txn->uri;
11320
11321 while (*ptr != ' ' && *ptr != '\0') /* find first space */
11322 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11323
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11324 if (!*ptr)
11325 return 0;
11326
11327 ptr++; /* skip the space */
11328
11329 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11330 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11331 if (!ptr)
11332 return 0;
11333 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
11334 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11335
11336 smp->data.str = *temp;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11337 smp->data.str.len = ptr - temp->str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11338 smp->type = SMP_T_STR;
11339 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11340
11341 return 1;
11342}
11343
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11344/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
11345 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11346 */
11347static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11348smp_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]11349{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11350 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11351
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11352 if (!txn || txn->req.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11353 return 0;
11354
11355 if (txn->req.flags & HTTP_MSGF_VER_11)
11356 smp->data.str.str = "HTTP/1.1";
11357 else
11358 smp->data.str.str = "HTTP/1.0";
11359
11360 smp->data.str.len = 8;
11361 smp->type = SMP_T_STR;
11362 smp->flags = SMP_F_CONST;
11363 return 1;
11364
11365}
11366
11367/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
11368 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11369 */
11370static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11371smp_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]11372{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11373 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11374
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11375 if (!txn || txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11376 return 0;
11377
11378 if (txn->rsp.flags & HTTP_MSGF_VER_11)
11379 smp->data.str.str = "HTTP/1.1";
11380 else
11381 smp->data.str.str = "HTTP/1.0";
11382
11383 smp->data.str.len = 8;
11384 smp->type = SMP_T_STR;
11385 smp->flags = SMP_F_CONST;
11386 return 1;
11387
11388}
11389
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11390
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11391/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11392 * 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]11393 * 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]11394 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11395 * 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]11396 * Accepts exactly 1 argument of type string. If the input options indicate
11397 * that no iterating is desired, then only last value is fetched if any.
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]11398 * The returned sample is of type CSTR. Can be used to parse cookies in other
11399 * files.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11400 */
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11401int 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]11402{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11403 struct http_txn *txn;
11404 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11405 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11406 const struct http_msg *msg;
11407 const char *hdr_name;
11408 int hdr_name_len;
11409 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11410 int occ = 0;
11411 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11412
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11413 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11414 return 0;
11415
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11416 if (!ctx) {
11417 /* first call */
11418 ctx = &static_hdr_ctx;
11419 ctx->idx = 0;
11420 smp->ctx.a[2] = ctx;
11421 }
11422
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11423 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11424
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11425 txn = smp->strm->txn;
11426 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11427
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11428 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11429 msg = &txn->req;
11430 hdr_name = "Cookie";
11431 hdr_name_len = 6;
11432 } else {
11433 msg = &txn->rsp;
11434 hdr_name = "Set-Cookie";
11435 hdr_name_len = 10;
11436 }
11437
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11438 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11439 /* no explicit occurrence and single fetch => last cookie by default */
11440 occ = -1;
11441
11442 /* OK so basically here, either we want only one value and it's the
11443 * last one, or we want to iterate over all of them and we fetch the
11444 * next one.
11445 */
11446
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11447 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11448 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11449 /* search for the header from the beginning, we must first initialize
11450 * the search parameters.
11451 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11452 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11453 ctx->idx = 0;
11454 }
11455
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11456 smp->flags |= SMP_F_VOL_HDR;
11457
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11458 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11459 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
11460 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11461 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
11462 goto out;
11463
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11464 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11465 continue;
11466
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11467 smp->ctx.a[0] = ctx->line + ctx->val;
11468 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11469 }
11470
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11471 smp->type = SMP_T_STR;
11472 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11473 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]11474 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11475 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11476 &smp->data.str.str,
11477 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11478 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11479 found = 1;
11480 if (occ >= 0) {
11481 /* one value was returned into smp->data.str.{str,len} */
11482 smp->flags |= SMP_F_NOT_LAST;
11483 return 1;
11484 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11485 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11486 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11487 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11488 /* all cookie headers and values were scanned. If we're looking for the
11489 * last occurrence, we may return it now.
11490 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11491 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11492 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11493 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11494}
11495
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11496/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11497 * 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]11498 * multiple cookies may be parsed on the same line. The returned sample is of
11499 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11500 */
11501static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11502smp_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]11503{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11504 struct http_txn *txn;
11505 struct hdr_idx *idx;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11506 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11507 const struct http_msg *msg;
11508 const char *hdr_name;
11509 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11510 int cnt;
11511 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11512 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11513
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11514 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11515 return 0;
11516
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11517 CHECK_HTTP_MESSAGE_FIRST();
11518
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11519 txn = smp->strm->txn;
11520 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11521
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11522 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11523 msg = &txn->req;
11524 hdr_name = "Cookie";
11525 hdr_name_len = 6;
11526 } else {
11527 msg = &txn->rsp;
11528 hdr_name = "Set-Cookie";
11529 hdr_name_len = 10;
11530 }
11531
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11532 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]11533 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11534 ctx.idx = 0;
11535 cnt = 0;
11536
11537 while (1) {
11538 /* Note: val_beg == NULL every time we need to fetch a new header */
11539 if (!val_beg) {
11540 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
11541 break;
11542
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11543 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11544 continue;
11545
11546 val_beg = ctx.line + ctx.val;
11547 val_end = val_beg + ctx.vlen;
11548 }
11549
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11550 smp->type = SMP_T_STR;
11551 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11552 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11553 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11554 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11555 &smp->data.str.str,
11556 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11557 cnt++;
11558 }
11559 }
11560
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11561 smp->type = SMP_T_SINT;
11562 smp->data.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11563 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11564 return 1;
11565}
11566
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11567/* Fetch an cookie's integer value. The integer value is returned. It
11568 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
11569 */
11570static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11571smp_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]11572{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11573 int ret = smp_fetch_cookie(args, smp, kw, private);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11574
11575 if (ret > 0) {
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11576 smp->type = SMP_T_SINT;
11577 smp->data.sint = strl2ic(smp->data.str.str, smp->data.str.len);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11578 }
11579
11580 return ret;
11581}
11582
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11583/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]11584/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11585/************************************************************************/
11586
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11587/*
11588 * Given a path string and its length, find the position of beginning of the
11589 * query string. Returns NULL if no query string is found in the path.
11590 *
11591 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
11592 *
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11593 * find_query_string(path, n, '?') points to "yo=mama;ye=daddy" string.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11594 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11595static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11596{
11597 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]11598
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11599 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11600 return p ? p + 1 : NULL;
11601}
11602
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11603static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11604{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11605 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11606}
11607
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11608/* after increasing a pointer value, it can exceed the first buffer
11609 * size. This function transform the value of <ptr> according with
11610 * the expected position. <chunks> is an array of the one or two
11611 * avalaible chunks. The first value is the start of the first chunk,
11612 * the second value if the end+1 of the first chunks. The third value
11613 * is NULL or the start of the second chunk and the fourth value is
11614 * the end+1 of the second chunk. The function returns 1 if does a
11615 * wrap, else returns 0.
11616 */
11617static inline int fix_pointer_if_wrap(const char **chunks, const char **ptr)
11618{
11619 if (*ptr < chunks[1])
11620 return 0;
11621 if (!chunks[2])
11622 return 0;
11623 *ptr = chunks[2] + ( *ptr - chunks[1] );
11624 return 1;
11625}
11626
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11627/*
11628 * Given a url parameter, find the starting position of the first occurence,
11629 * or NULL if the parameter is not found.
11630 *
11631 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
11632 * the function will return query_string+8.
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11633 *
11634 * Warning:this function returns a pointer that can be point to the first chunk
11635 * or the second chunk. The caller must be check the position before using the
11636 * result.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11637 */
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11638static const char *
11639find_url_param_pos(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11640 const char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11641 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11642{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11643 const char *pos, *last, *equal;
11644 const char **bufs = chunks;
11645 int l1, l2;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11646
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11647
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11648 pos = bufs[0];
11649 last = bufs[1];
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11650 while (pos <= last) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11651 /* Check the equal. */
11652 equal = pos + url_param_name_l;
11653 if (fix_pointer_if_wrap(chunks, &equal)) {
11654 if (equal >= chunks[3])
11655 return NULL;
11656 } else {
11657 if (equal >= chunks[1])
11658 return NULL;
11659 }
11660 if (*equal == '=') {
11661 if (pos + url_param_name_l > last) {
11662 /* process wrap case, we detect a wrap. In this case, the
11663 * comparison is performed in two parts.
11664 */
11665
11666 /* This is the end, we dont have any other chunk. */
11667 if (bufs != chunks || !bufs[2])
11668 return NULL;
11669
11670 /* Compute the length of each part of the comparison. */
11671 l1 = last - pos;
11672 l2 = url_param_name_l - l1;
11673
11674 /* The second buffer is too short to contain the compared string. */
11675 if (bufs[2] + l2 > bufs[3])
11676 return NULL;
11677
11678 if (memcmp(pos, url_param_name, l1) == 0 &&
11679 memcmp(bufs[2], url_param_name+l1, l2) == 0)
11680 return pos;
11681
11682 /* Perform wrapping and jump the string who fail the comparison. */
11683 bufs += 2;
11684 pos = bufs[0] + l2;
11685 last = bufs[1];
11686
11687 } else {
11688 /* process a simple comparison. */
11689 if (memcmp(pos, url_param_name, url_param_name_l) == 0) {
11690 return pos; }
11691 pos += url_param_name_l + 1;
11692 if (fix_pointer_if_wrap(chunks, &pos))
11693 last = bufs[2];
11694 }
11695 }
11696
11697 while (1) {
11698 /* Look for the next delimiter. */
11699 while (pos <= last && !is_param_delimiter(*pos, delim))
11700 pos++;
11701 if (pos < last)
11702 break;
11703 /* process buffer wrapping. */
11704 if (bufs != chunks || !bufs[2])
11705 return NULL;
11706 bufs += 2;
11707 pos = bufs[0];
11708 last = bufs[1];
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11709 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11710 pos++;
11711 }
11712 return NULL;
11713}
11714
11715/*
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11716 * Given a url parameter name and a query string, returns its value and size
11717 * into *value and *value_l respectively, and returns non-zero. An empty
11718 * url_param_name matches the first available parameter. If the parameter is
11719 * not found, zero is returned and value/value_l are not touched.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11720 */
11721static int
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11722find_next_url_param(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11723 const char* url_param_name, size_t url_param_name_l,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11724 const char **vstart, const char **vend, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11725{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11726 const char *arg_start, *qs_end;
11727 const char *value_start, *value_end;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11728
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11729 arg_start = chunks[0];
11730 qs_end = chunks[1];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11731 if (url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11732 /* Looks for an argument name. */
11733 arg_start = find_url_param_pos(chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11734 url_param_name, url_param_name_l,
11735 delim);
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11736 /* Check for wrapping. */
11737 if (arg_start > qs_end)
11738 qs_end = chunks[3];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11739 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11740 if (!arg_start)
11741 return 0;
11742
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11743 if (!url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11744 while (1) {
11745 /* looks for the first argument. */
11746 value_start = memchr(arg_start, '=', qs_end - arg_start);
11747 if (!value_start) {
11748
11749 /* Check for wrapping. */
11750 if (arg_start >= chunks[0] &&
11751 arg_start <= chunks[1] &&
11752 chunks[2]) {
11753 arg_start = chunks[2];
11754 qs_end = chunks[3];
11755 continue;
11756 }
11757 return 0;
11758 }
11759 break;
11760 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11761 value_start++;
11762 }
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11763 else {
11764 /* Jump the argument length. */
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11765 value_start = arg_start + url_param_name_l + 1;
11766
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11767 /* Check for pointer wrapping. */
11768 if (fix_pointer_if_wrap(chunks, &value_start)) {
11769 /* Update the end pointer. */
11770 qs_end = chunks[3];
11771
11772 /* Check for overflow. */
11773 if (value_start > qs_end)
11774 return 0;
11775 }
11776 }
11777
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11778 value_end = value_start;
11779
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11780 while (1) {
11781 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
11782 value_end++;
11783 if (value_end < qs_end)
11784 break;
11785 /* process buffer wrapping. */
11786 if (value_end >= chunks[0] &&
11787 value_end <= chunks[1] &&
11788 chunks[2]) {
11789 value_end = chunks[2];
11790 qs_end = chunks[3];
11791 continue;
11792 }
11793 break;
11794 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11795
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11796 *vstart = value_start;
11797 *vend = value_end;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]11798 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11799}
11800
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11801/* This scans a URL-encoded query string. It takes an optionally wrapping
11802 * string whose first contigous chunk has its beginning in ctx->a[0] and end
11803 * in ctx->a[1], and the optional second part in (ctx->a[2]..ctx->a[3]). The
11804 * pointers are updated for next iteration before leaving.
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11805 */
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11806static int
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11807smp_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]11808{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11809 const char *vstart, *vend;
11810 struct chunk *temp;
11811 const char **chunks = (const char **)smp->ctx.a;
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11812
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11813 if (!find_next_url_param(chunks,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11814 name, name_len,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11815 &vstart, &vend,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11816 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11817 return 0;
11818
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11819 /* Create sample. If the value is contiguous, return the pointer as CONST,
11820 * if the value is wrapped, copy-it in a buffer.
11821 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11822 smp->type = SMP_T_STR;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11823 if (chunks[2] &&
11824 vstart >= chunks[0] && vstart <= chunks[1] &&
11825 vend >= chunks[2] && vend <= chunks[3]) {
11826 /* Wrapped case. */
11827 temp = get_trash_chunk();
11828 memcpy(temp->str, vstart, chunks[1] - vstart);
11829 memcpy(temp->str + ( chunks[1] - vstart ), chunks[2], vend - chunks[2]);
11830 smp->data.str.str = temp->str;
11831 smp->data.str.len = ( chunks[1] - vstart ) + ( vend - chunks[2] );
11832 } else {
11833 /* Contiguous case. */
11834 smp->data.str.str = (char *)vstart;
11835 smp->data.str.len = vend - vstart;
11836 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
11837 }
11838
11839 /* Update context, check wrapping. */
11840 chunks[0] = vend;
11841 if (chunks[2] && vend >= chunks[2] && vend <= chunks[3]) {
11842 chunks[1] = chunks[3];
11843 chunks[2] = NULL;
11844 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11845
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11846 if (chunks[0] < chunks[1])
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11847 smp->flags |= SMP_F_NOT_LAST;
11848
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11849 return 1;
11850}
11851
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11852/* This function iterates over each parameter of the query string. It uses
11853 * 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]11854 * parameter. Since it uses smp_fetch_param(), ctx->a[2..3] are both NULL.
11855 * An optional parameter name is passed in args[0], otherwise any parameter is
11856 * considered. It supports an optional delimiter argument for the beginning of
11857 * the string in args[1], which defaults to "?".
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11858 */
11859static int
11860smp_fetch_url_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11861{
11862 struct http_msg *msg;
11863 char delim = '?';
11864 const char *name;
11865 int name_len;
11866
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11867 if (!args ||
11868 (args[0].type && args[0].type != ARGT_STR) ||
11869 (args[1].type && args[1].type != ARGT_STR))
11870 return 0;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11871
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11872 name = "";
11873 name_len = 0;
11874 if (args->type == ARGT_STR) {
11875 name = args->data.str.str;
11876 name_len = args->data.str.len;
11877 }
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11878
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11879 if (args[1].type)
11880 delim = *args[1].data.str.str;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11881
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11882 if (!smp->ctx.a[0]) { // first call, find the query string
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11883 CHECK_HTTP_MESSAGE_FIRST();
11884
11885 msg = &smp->strm->txn->req;
11886
11887 smp->ctx.a[0] = find_param_list(msg->chn->buf->p + msg->sl.rq.u,
11888 msg->sl.rq.u_l, delim);
11889 if (!smp->ctx.a[0])
11890 return 0;
11891
11892 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]11893
11894 /* Assume that the context is filled with NULL pointer
11895 * before the first call.
11896 * smp->ctx.a[2] = NULL;
11897 * smp->ctx.a[3] = NULL;
11898 */
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11899 }
11900
11901 return smp_fetch_param(delim, name, name_len, args, smp, kw, private);
11902}
11903
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11904/* This function iterates over each parameter of the body. This requires
11905 * that the body has been waited for using http-buffer-request. It uses
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11906 * ctx->a[0] and ctx->a[1] to store the beginning and end of the first
11907 * contigous part of the body, and optionally ctx->a[2..3] to reference the
11908 * optional second part if the body wraps at the end of the buffer. An optional
11909 * parameter name is passed in args[0], otherwise any parameter is considered.
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11910 */
11911static int
11912smp_fetch_body_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11913{
11914 struct http_txn *txn = smp->strm->txn;
11915 struct http_msg *msg;
11916 unsigned long len;
11917 unsigned long block1;
11918 char *body;
11919 const char *name;
11920 int name_len;
11921
11922 if (!args || (args[0].type && args[0].type != ARGT_STR))
11923 return 0;
11924
11925 name = "";
11926 name_len = 0;
11927 if (args[0].type == ARGT_STR) {
11928 name = args[0].data.str.str;
11929 name_len = args[0].data.str.len;
11930 }
11931
11932 if (!smp->ctx.a[0]) { // first call, find the query string
11933 CHECK_HTTP_MESSAGE_FIRST();
11934
11935 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
11936 msg = &txn->req;
11937 else
11938 msg = &txn->rsp;
11939
11940 len = http_body_bytes(msg);
11941 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
11942
11943 block1 = len;
11944 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
11945 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
11946
11947 if (block1 == len) {
11948 /* buffer is not wrapped (or empty) */
11949 smp->ctx.a[0] = body;
11950 smp->ctx.a[1] = body + len;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11951
11952 /* Assume that the context is filled with NULL pointer
11953 * before the first call.
11954 * smp->ctx.a[2] = NULL;
11955 * smp->ctx.a[3] = NULL;
11956 */
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11957 }
11958 else {
11959 /* buffer is wrapped, we need to defragment it */
11960 smp->ctx.a[0] = body;
11961 smp->ctx.a[1] = body + block1;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11962 smp->ctx.a[2] = msg->chn->buf->data;
11963 smp->ctx.a[3] = msg->chn->buf->data + ( len - block1 );
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11964 }
11965 }
11966 return smp_fetch_param('&', name, name_len, args, smp, kw, private);
11967}
11968
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11969/* Return the signed integer value for the specified url parameter (see url_param
11970 * above).
11971 */
11972static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11973smp_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]11974{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11975 int ret = smp_fetch_url_param(args, smp, kw, private);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11976
11977 if (ret > 0) {
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11978 smp->type = SMP_T_SINT;
11979 smp->data.sint = strl2ic(smp->data.str.str, smp->data.str.len);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11980 }
11981
11982 return ret;
11983}
11984
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11985/* This produces a 32-bit hash of the concatenation of the first occurrence of
11986 * the Host header followed by the path component if it begins with a slash ('/').
11987 * This means that '*' will not be added, resulting in exactly the first Host
11988 * entry. If no Host header is found, then the path is used. The resulting value
11989 * is hashed using the url hash followed by a full avalanche hash and provides a
11990 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
11991 * high-traffic sites without having to store whole paths.
11992 * this differs from the base32 functions in that it includes the url parameters
11993 * as well as the path
11994 */
11995static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11996smp_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]11997{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11998 struct http_txn *txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11999 struct hdr_ctx ctx;
12000 unsigned int hash = 0;
12001 char *ptr, *beg, *end;
12002 int len;
12003
12004 CHECK_HTTP_MESSAGE_FIRST();
12005
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12006 txn = smp->strm->txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12007 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]12008 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]12009 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
12010 ptr = ctx.line + ctx.val;
12011 len = ctx.vlen;
12012 while (len--)
12013 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
12014 }
12015
12016 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]12017 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]12018 beg = http_get_path(txn);
12019 if (!beg)
12020 beg = end;
12021
12022 for (ptr = beg; ptr < end ; ptr++);
12023
12024 if (beg < ptr && *beg == '/') {
12025 while (beg < ptr)
12026 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
12027 }
12028 hash = full_hash(hash);
12029
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12030 smp->type = SMP_T_SINT;
12031 smp->data.sint = hash;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12032 smp->flags = SMP_F_VOL_1ST;
12033 return 1;
12034}
12035
12036/* This concatenates the source address with the 32-bit hash of the Host and
12037 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
12038 * per-url counters. The result is a binary block from 8 to 20 bytes depending
12039 * on the source address length. The URL hash is stored before the address so
12040 * that in environments where IPv6 is insignificant, truncating the output to
12041 * 8 bytes would still work.
12042 */
12043static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]12044smp_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]12045{
12046 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12047 struct connection *cli_conn = objt_conn(smp->sess->origin);
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12048 unsigned int hash;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12049
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]12050 if (!smp_fetch_url32(args, smp, kw, private))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12051 return 0;
12052
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12053 /* The returned hash is a 32 bytes integer. */
12054 hash = smp->data.sint;
12055
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12056 temp = get_trash_chunk();
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12057 memcpy(temp->str + temp->len, &hash, sizeof(hash));
12058 temp->len += sizeof(hash);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12059
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]12060 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12061 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]12062 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]12063 temp->len += 4;
12064 break;
12065 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]12066 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]12067 temp->len += 16;
12068 break;
12069 default:
12070 return 0;
12071 }
12072
12073 smp->data.str = *temp;
12074 smp->type = SMP_T_BIN;
12075 return 1;
12076}
12077
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]12078/* This function is used to validate the arguments passed to any "hdr" fetch
12079 * keyword. These keywords support an optional positive or negative occurrence
12080 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
12081 * is assumed that the types are already the correct ones. Returns 0 on error,
12082 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
12083 * error message in case of error, that the caller is responsible for freeing.
12084 * The initial location must either be freeable or NULL.
12085 */
Thierry FOURNIER49f45af2014-12-08 19:50:43 +0100[diff] [blame]12086int val_hdr(struct arg *arg, char **err_msg)
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]12087{
12088 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]12089 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]12090 return 0;
12091 }
12092 return 1;
12093}
12094
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12095/* takes an UINT value on input supposed to represent the time since EPOCH,
12096 * adds an optional offset found in args[0] and emits a string representing
12097 * the date in RFC-1123/5322 format.
12098 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12099static int sample_conv_http_date(const struct arg *args, struct sample *smp, void *private)
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12100{
12101 const char day[7][4] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
12102 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
12103 struct chunk *temp;
12104 struct tm *tm;
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12105 /* With high numbers, the date returned can be negative, the 55 bits mask prevent this. */
12106 time_t curr_date = smp->data.sint & 0x007fffffffffffffLL;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12107
12108 /* add offset */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12109 if (args && (args[0].type == ARGT_SINT))
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12110 curr_date += args[0].data.sint;
12111
12112 tm = gmtime(&curr_date);
Thierry FOURNIERfac9ccf2015-07-08 00:15:20 +0200[diff] [blame]12113 if (!tm)
12114 return 0;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12115
12116 temp = get_trash_chunk();
12117 temp->len = snprintf(temp->str, temp->size - temp->len,
12118 "%s, %02d %s %04d %02d:%02d:%02d GMT",
12119 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
12120 tm->tm_hour, tm->tm_min, tm->tm_sec);
12121
12122 smp->data.str = *temp;
12123 smp->type = SMP_T_STR;
12124 return 1;
12125}
12126
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12127/* Match language range with language tag. RFC2616 14.4:
12128 *
12129 * A language-range matches a language-tag if it exactly equals
12130 * the tag, or if it exactly equals a prefix of the tag such
12131 * that the first tag character following the prefix is "-".
12132 *
12133 * Return 1 if the strings match, else return 0.
12134 */
12135static inline int language_range_match(const char *range, int range_len,
12136 const char *tag, int tag_len)
12137{
12138 const char *end = range + range_len;
12139 const char *tend = tag + tag_len;
12140 while (range < end) {
12141 if (*range == '-' && tag == tend)
12142 return 1;
12143 if (*range != *tag || tag == tend)
12144 return 0;
12145 range++;
12146 tag++;
12147 }
12148 /* Return true only if the last char of the tag is matched. */
12149 return tag == tend;
12150}
12151
12152/* Arguments: The list of expected value, the number of parts returned and the separator */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12153static int sample_conv_q_prefered(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12154{
12155 const char *al = smp->data.str.str;
12156 const char *end = al + smp->data.str.len;
12157 const char *token;
12158 int toklen;
12159 int qvalue;
12160 const char *str;
12161 const char *w;
12162 int best_q = 0;
12163
12164 /* Set the constant to the sample, because the output of the
12165 * function will be peek in the constant configuration string.
12166 */
12167 smp->flags |= SMP_F_CONST;
12168 smp->data.str.size = 0;
12169 smp->data.str.str = "";
12170 smp->data.str.len = 0;
12171
12172 /* Parse the accept language */
12173 while (1) {
12174
12175 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12176 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12177 al++;
12178 if (al >= end)
12179 break;
12180
12181 /* Start of the fisrt word. */
12182 token = al;
12183
12184 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12185 while (al < end && *al != ';' && *al != ',' && !isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12186 al++;
12187 if (al == token)
12188 goto expect_comma;
12189
12190 /* Length of the token. */
12191 toklen = al - token;
12192 qvalue = 1000;
12193
12194 /* Check if the token exists in the list. If the token not exists,
12195 * jump to the next token.
12196 */
12197 str = args[0].data.str.str;
12198 w = str;
12199 while (1) {
12200 if (*str == ';' || *str == '\0') {
12201 if (language_range_match(token, toklen, w, str-w))
12202 goto look_for_q;
12203 if (*str == '\0')
12204 goto expect_comma;
12205 w = str + 1;
12206 }
12207 str++;
12208 }
12209 goto expect_comma;
12210
12211look_for_q:
12212
12213 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12214 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12215 al++;
12216 if (al >= end)
12217 goto process_value;
12218
12219 /* If ',' is found, process the result */
12220 if (*al == ',')
12221 goto process_value;
12222
12223 /* If the character is different from ';', look
12224 * for the end of the header part in best effort.
12225 */
12226 if (*al != ';')
12227 goto expect_comma;
12228
12229 /* Assumes that the char is ';', now expect "q=". */
12230 al++;
12231
12232 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12233 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12234 al++;
12235 if (al >= end)
12236 goto process_value;
12237
12238 /* Expect 'q'. If no 'q', continue in best effort */
12239 if (*al != 'q')
12240 goto process_value;
12241 al++;
12242
12243 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12244 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12245 al++;
12246 if (al >= end)
12247 goto process_value;
12248
12249 /* Expect '='. If no '=', continue in best effort */
12250 if (*al != '=')
12251 goto process_value;
12252 al++;
12253
12254 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12255 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12256 al++;
12257 if (al >= end)
12258 goto process_value;
12259
12260 /* Parse the q value. */
12261 qvalue = parse_qvalue(al, &al);
12262
12263process_value:
12264
12265 /* If the new q value is the best q value, then store the associated
12266 * language in the response. If qvalue is the biggest value (1000),
12267 * break the process.
12268 */
12269 if (qvalue > best_q) {
12270 smp->data.str.str = (char *)w;
12271 smp->data.str.len = str - w;
12272 if (qvalue >= 1000)
12273 break;
12274 best_q = qvalue;
12275 }
12276
12277expect_comma:
12278
12279 /* Expect comma or end. If the end is detected, quit the loop. */
12280 while (al < end && *al != ',')
12281 al++;
12282 if (al >= end)
12283 break;
12284
12285 /* Comma is found, jump it and restart the analyzer. */
12286 al++;
12287 }
12288
12289 /* Set default value if required. */
12290 if (smp->data.str.len == 0 && args[1].type == ARGT_STR) {
12291 smp->data.str.str = args[1].data.str.str;
12292 smp->data.str.len = args[1].data.str.len;
12293 }
12294
12295 /* Return true only if a matching language was found. */
12296 return smp->data.str.len != 0;
12297}
12298
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12299/* This fetch url-decode any input string. */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12300static int sample_conv_url_dec(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12301{
12302 /* If the constant flag is set or if not size is avalaible at
12303 * the end of the buffer, copy the string in other buffer
12304 * before decoding.
12305 */
12306 if (smp->flags & SMP_F_CONST || smp->data.str.size <= smp->data.str.len) {
12307 struct chunk *str = get_trash_chunk();
12308 memcpy(str->str, smp->data.str.str, smp->data.str.len);
12309 smp->data.str.str = str->str;
12310 smp->data.str.size = str->size;
12311 smp->flags &= ~SMP_F_CONST;
12312 }
12313
12314 /* Add final \0 required by url_decode(), and convert the input string. */
12315 smp->data.str.str[smp->data.str.len] = '\0';
12316 smp->data.str.len = url_decode(smp->data.str.str);
12317 return 1;
12318}
12319
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12320static int smp_conv_req_capture(const struct arg *args, struct sample *smp, void *private)
12321{
12322 struct proxy *fe = strm_fe(smp->strm);
12323 int idx, i;
12324 struct cap_hdr *hdr;
12325 int len;
12326
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12327 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12328 return 0;
12329
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12330 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12331
12332 /* Check the availibity of the capture id. */
12333 if (idx > fe->nb_req_cap - 1)
12334 return 0;
12335
12336 /* Look for the original configuration. */
12337 for (hdr = fe->req_cap, i = fe->nb_req_cap - 1;
12338 hdr != NULL && i != idx ;
12339 i--, hdr = hdr->next);
12340 if (!hdr)
12341 return 0;
12342
12343 /* check for the memory allocation */
12344 if (smp->strm->req_cap[hdr->index] == NULL)
12345 smp->strm->req_cap[hdr->index] = pool_alloc2(hdr->pool);
12346 if (smp->strm->req_cap[hdr->index] == NULL)
12347 return 0;
12348
12349 /* Check length. */
12350 len = smp->data.str.len;
12351 if (len > hdr->len)
12352 len = hdr->len;
12353
12354 /* Capture input data. */
12355 memcpy(smp->strm->req_cap[idx], smp->data.str.str, len);
12356 smp->strm->req_cap[idx][len] = '\0';
12357
12358 return 1;
12359}
12360
12361static int smp_conv_res_capture(const struct arg *args, struct sample *smp, void *private)
12362{
12363 struct proxy *fe = strm_fe(smp->strm);
12364 int idx, i;
12365 struct cap_hdr *hdr;
12366 int len;
12367
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12368 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12369 return 0;
12370
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12371 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12372
12373 /* Check the availibity of the capture id. */
12374 if (idx > fe->nb_rsp_cap - 1)
12375 return 0;
12376
12377 /* Look for the original configuration. */
12378 for (hdr = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
12379 hdr != NULL && i != idx ;
12380 i--, hdr = hdr->next);
12381 if (!hdr)
12382 return 0;
12383
12384 /* check for the memory allocation */
12385 if (smp->strm->res_cap[hdr->index] == NULL)
12386 smp->strm->res_cap[hdr->index] = pool_alloc2(hdr->pool);
12387 if (smp->strm->res_cap[hdr->index] == NULL)
12388 return 0;
12389
12390 /* Check length. */
12391 len = smp->data.str.len;
12392 if (len > hdr->len)
12393 len = hdr->len;
12394
12395 /* Capture input data. */
12396 memcpy(smp->strm->res_cap[idx], smp->data.str.str, len);
12397 smp->strm->res_cap[idx][len] = '\0';
12398
12399 return 1;
12400}
12401
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12402/* This function executes one of the set-{method,path,query,uri} actions. It
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12403 * takes the string from the variable 'replace' with length 'len', then modifies
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12404 * the relevant part of the request line accordingly. Then it updates various
12405 * pointers to the next elements which were moved, and the total buffer length.
12406 * It finds the action to be performed in p[2], previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12407 * parse_set_req_line(). It returns 0 in case of success, -1 in case of internal
12408 * error, though this can be revisited when this code is finally exploited.
12409 *
12410 * 'action' can be '0' to replace method, '1' to replace path, '2' to replace
12411 * query string and 3 to replace uri.
12412 *
12413 * In query string case, the mark question '?' must be set at the start of the
12414 * string by the caller, event if the replacement query string is empty.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12415 */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12416int http_replace_req_line(int action, const char *replace, int len,
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12417 struct proxy *px, struct stream *s)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12418{
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12419 struct http_txn *txn = s->txn;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12420 char *cur_ptr, *cur_end;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12421 int offset = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12422 int delta;
12423
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12424 switch (action) {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12425 case 0: // method
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12426 cur_ptr = s->req.buf->p;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12427 cur_end = cur_ptr + txn->req.sl.rq.m_l;
12428
12429 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12430 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12431 txn->req.sl.rq.m_l += delta;
12432 txn->req.sl.rq.u += delta;
12433 txn->req.sl.rq.v += delta;
12434 break;
12435
12436 case 1: // path
12437 cur_ptr = http_get_path(txn);
12438 if (!cur_ptr)
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12439 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12440
12441 cur_end = cur_ptr;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12442 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]12443 cur_end++;
12444
12445 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12446 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12447 txn->req.sl.rq.u_l += delta;
12448 txn->req.sl.rq.v += delta;
12449 break;
12450
12451 case 2: // query
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12452 offset = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12453 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12454 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12455 while (cur_ptr < cur_end && *cur_ptr != '?')
12456 cur_ptr++;
12457
12458 /* skip the question mark or indicate that we must insert it
12459 * (but only if the format string is not empty then).
12460 */
12461 if (cur_ptr < cur_end)
12462 cur_ptr++;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12463 else if (len > 1)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12464 offset = 0;
12465
12466 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12467 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12468 txn->req.sl.rq.u_l += delta;
12469 txn->req.sl.rq.v += delta;
12470 break;
12471
12472 case 3: // uri
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12473 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12474 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12475
12476 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12477 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12478 txn->req.sl.rq.u_l += delta;
12479 txn->req.sl.rq.v += delta;
12480 break;
12481
12482 default:
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12483 return -1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12484 }
12485
12486 /* commit changes and adjust end of message */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12487 delta = buffer_replace2(s->req.buf, cur_ptr, cur_end, replace + offset, len - offset);
Thierry FOURNIER7f6192c2015-04-26 18:01:40 +0200[diff] [blame]12488 txn->req.sl.rq.l += delta;
12489 txn->hdr_idx.v[0].len += delta;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12490 http_msg_move_end(&txn->req, delta);
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12491 return 0;
12492}
12493
12494/* This function executes one of the set-{method,path,query,uri} actions. It
12495 * builds a string in the trash from the specified format string. It finds
12496 * the action to be performed in p[2], previously filled by function
12497 * parse_set_req_line(). The replacement action is excuted by the function
12498 * http_action_set_req_line_exec(). It always returns 1. If an error occurs
12499 * the action is canceled, but the rule processing continue.
12500 */
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12501int http_action_set_req_line(struct http_req_rule *rule, struct proxy *px, struct stream *s)
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12502{
12503 chunk_reset(&trash);
12504
12505 /* If we have to create a query string, prepare a '?'. */
12506 if (*(int *)&rule->arg.act.p[2] == 2)
12507 trash.str[trash.len++] = '?';
12508 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, (struct list *)&rule->arg.act.p[0]);
12509
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12510 http_replace_req_line(*(int *)&rule->arg.act.p[2], trash.str, trash.len, px, s);
Thierry FOURNIER01c30122015-03-14 14:14:47 +0100[diff] [blame]12511 return 1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12512}
12513
12514/* parse an http-request action among :
12515 * set-method
12516 * set-path
12517 * set-query
12518 * set-uri
12519 *
12520 * All of them accept a single argument of type string representing a log-format.
12521 * The resulting rule makes use of arg->act.p[0..1] to store the log-format list
12522 * head, and p[2] to store the action as an int (0=method, 1=path, 2=query, 3=uri).
12523 * It returns 0 on success, < 0 on error.
12524 */
12525int parse_set_req_line(const char **args, int *orig_arg, struct proxy *px, struct http_req_rule *rule, char **err)
12526{
12527 int cur_arg = *orig_arg;
12528
12529 rule->action = HTTP_REQ_ACT_CUSTOM_CONT;
12530
12531 switch (args[0][4]) {
12532 case 'm' :
12533 *(int *)&rule->arg.act.p[2] = 0;
12534 rule->action_ptr = http_action_set_req_line;
12535 break;
12536 case 'p' :
12537 *(int *)&rule->arg.act.p[2] = 1;
12538 rule->action_ptr = http_action_set_req_line;
12539 break;
12540 case 'q' :
12541 *(int *)&rule->arg.act.p[2] = 2;
12542 rule->action_ptr = http_action_set_req_line;
12543 break;
12544 case 'u' :
12545 *(int *)&rule->arg.act.p[2] = 3;
12546 rule->action_ptr = http_action_set_req_line;
12547 break;
12548 default:
12549 memprintf(err, "internal error: unhandled action '%s'", args[0]);
12550 return -1;
12551 }
12552
12553 if (!*args[cur_arg] ||
12554 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
12555 memprintf(err, "expects exactly 1 argument <format>");
12556 return -1;
12557 }
12558
12559 LIST_INIT((struct list *)&rule->arg.act.p[0]);
12560 proxy->conf.args.ctx = ARGC_HRQ;
12561 parse_logformat_string(args[cur_arg], proxy, (struct list *)&rule->arg.act.p[0], LOG_OPT_HTTP,
12562 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
12563 proxy->conf.args.file, proxy->conf.args.line);
12564
12565 (*orig_arg)++;
12566 return 0;
12567}
12568
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12569/* This function executes the "capture" action. It executes a fetch expression,
12570 * turns the result into a string and puts it in a capture slot. It always
12571 * returns 1. If an error occurs the action is cancelled, but the rule
12572 * processing continues.
12573 */
12574int http_action_req_capture(struct http_req_rule *rule, struct proxy *px, struct stream *s)
12575{
12576 struct session *sess = s->sess;
12577 struct sample *key;
12578 struct sample_expr *expr = rule->arg.act.p[0];
12579 struct cap_hdr *h = rule->arg.act.p[1];
12580 char **cap = s->req_cap;
12581 int len;
12582
Adis Nezirovic79beb242015-07-06 15:41:02 +0200[diff] [blame]12583 key = sample_fetch_as_type(s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL, expr, SMP_T_STR);
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12584 if (!key)
12585 return 1;
12586
12587 if (cap[h->index] == NULL)
12588 cap[h->index] = pool_alloc2(h->pool);
12589
12590 if (cap[h->index] == NULL) /* no more capture memory */
12591 return 1;
12592
12593 len = key->data.str.len;
12594 if (len > h->len)
12595 len = h->len;
12596
12597 memcpy(cap[h->index], key->data.str.str, len);
12598 cap[h->index][len] = 0;
12599 return 1;
12600}
12601
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12602/* This function executes the "capture" action and store the result in a
12603 * capture slot if exists. It executes a fetch expression, turns the result
12604 * into a string and puts it in a capture slot. It always returns 1. If an
12605 * error occurs the action is cancelled, but the rule processing continues.
12606 */
12607int http_action_req_capture_by_id(struct http_req_rule *rule, struct proxy *px, struct stream *s)
12608{
12609 struct session *sess = s->sess;
12610 struct sample *key;
12611 struct sample_expr *expr = rule->arg.act.p[0];
12612 struct cap_hdr *h;
12613 int idx = (long)rule->arg.act.p[1];
12614 char **cap = s->req_cap;
12615 struct proxy *fe = strm_fe(s);
12616 int len;
12617 int i;
12618
12619 /* Look for the original configuration. */
12620 for (h = fe->req_cap, i = fe->nb_req_cap - 1;
12621 h != NULL && i != idx ;
12622 i--, h = h->next);
12623 if (!h)
12624 return 1;
12625
Adis Nezirovic79beb242015-07-06 15:41:02 +0200[diff] [blame]12626 key = sample_fetch_as_type(s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL, expr, SMP_T_STR);
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12627 if (!key)
12628 return 1;
12629
12630 if (cap[h->index] == NULL)
12631 cap[h->index] = pool_alloc2(h->pool);
12632
12633 if (cap[h->index] == NULL) /* no more capture memory */
12634 return 1;
12635
12636 len = key->data.str.len;
12637 if (len > h->len)
12638 len = h->len;
12639
12640 memcpy(cap[h->index], key->data.str.str, len);
12641 cap[h->index][len] = 0;
12642 return 1;
12643}
12644
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12645/* parse an "http-request capture" action. It takes a single argument which is
12646 * a sample fetch expression. It stores the expression into arg->act.p[0] and
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12647 * the allocated hdr_cap struct or the preallocated "id" into arg->act.p[1].
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12648 * It returns 0 on success, < 0 on error.
12649 */
12650int parse_http_req_capture(const char **args, int *orig_arg, struct proxy *px, struct http_req_rule *rule, char **err)
12651{
12652 struct sample_expr *expr;
12653 struct cap_hdr *hdr;
12654 int cur_arg;
Willy Tarreau3986ac12015-05-08 16:13:42 +0200[diff] [blame]12655 int len = 0;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12656
12657 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12658 if (strcmp(args[cur_arg], "if") == 0 ||
12659 strcmp(args[cur_arg], "unless") == 0)
12660 break;
12661
12662 if (cur_arg < *orig_arg + 3) {
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12663 memprintf(err, "expects <expression> [ 'len' <length> | id <idx> ]");
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12664 return -1;
12665 }
12666
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12667 cur_arg = *orig_arg;
12668 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12669 if (!expr)
12670 return -1;
12671
12672 if (!(expr->fetch->val & SMP_VAL_FE_HRQ_HDR)) {
12673 memprintf(err,
12674 "fetch method '%s' extracts information from '%s', none of which is available here",
12675 args[cur_arg-1], sample_src_names(expr->fetch->use));
12676 free(expr);
12677 return -1;
12678 }
12679
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12680 if (!args[cur_arg] || !*args[cur_arg]) {
12681 memprintf(err, "expects 'len or 'id'");
12682 free(expr);
12683 return -1;
12684 }
12685
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12686 if (strcmp(args[cur_arg], "len") == 0) {
12687 cur_arg++;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12688
12689 if (!(px->cap & PR_CAP_FE)) {
12690 memprintf(err, "proxy '%s' has no frontend capability", px->id);
12691 return -1;
12692 }
12693
12694 proxy->conf.args.ctx = ARGC_CAP;
12695
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12696 if (!args[cur_arg]) {
12697 memprintf(err, "missing length value");
12698 free(expr);
12699 return -1;
12700 }
12701 /* we copy the table name for now, it will be resolved later */
12702 len = atoi(args[cur_arg]);
12703 if (len <= 0) {
12704 memprintf(err, "length must be > 0");
12705 free(expr);
12706 return -1;
12707 }
12708 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12709
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12710 if (!len) {
12711 memprintf(err, "a positive 'len' argument is mandatory");
12712 free(expr);
12713 return -1;
12714 }
12715
12716 hdr = calloc(sizeof(struct cap_hdr), 1);
12717 hdr->next = px->req_cap;
12718 hdr->name = NULL; /* not a header capture */
12719 hdr->namelen = 0;
12720 hdr->len = len;
12721 hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
12722 hdr->index = px->nb_req_cap++;
12723
12724 px->req_cap = hdr;
12725 px->to_log |= LW_REQHDR;
12726
12727 rule->action = HTTP_REQ_ACT_CUSTOM_CONT;
12728 rule->action_ptr = http_action_req_capture;
12729 rule->arg.act.p[0] = expr;
12730 rule->arg.act.p[1] = hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12731 }
12732
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12733 else if (strcmp(args[cur_arg], "id") == 0) {
12734 int id;
12735 char *error;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12736
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12737 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12738
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12739 if (!args[cur_arg]) {
12740 memprintf(err, "missing id value");
12741 free(expr);
12742 return -1;
12743 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12744
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12745 id = strtol(args[cur_arg], &error, 10);
12746 if (*error != '\0') {
12747 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12748 free(expr);
12749 return -1;
12750 }
12751 cur_arg++;
12752
12753 proxy->conf.args.ctx = ARGC_CAP;
12754
12755 rule->action = HTTP_REQ_ACT_CUSTOM_CONT;
12756 rule->action_ptr = http_action_req_capture_by_id;
12757 rule->arg.act.p[0] = expr;
12758 rule->arg.act.p[1] = (void *)(long)id;
12759 }
12760
12761 else {
12762 memprintf(err, "expects 'len' or 'id', found '%s'", args[cur_arg]);
12763 free(expr);
12764 return -1;
12765 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12766
12767 *orig_arg = cur_arg;
12768 return 0;
12769}
12770
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12771/* This function executes the "capture" action and store the result in a
12772 * capture slot if exists. It executes a fetch expression, turns the result
12773 * into a string and puts it in a capture slot. It always returns 1. If an
12774 * error occurs the action is cancelled, but the rule processing continues.
12775 */
12776int http_action_res_capture_by_id(struct http_res_rule *rule, struct proxy *px, struct stream *s)
12777{
12778 struct session *sess = s->sess;
12779 struct sample *key;
12780 struct sample_expr *expr = rule->arg.act.p[0];
12781 struct cap_hdr *h;
12782 int idx = (long)rule->arg.act.p[1];
12783 char **cap = s->res_cap;
12784 struct proxy *fe = strm_fe(s);
12785 int len;
12786 int i;
12787
12788 /* Look for the original configuration. */
12789 for (h = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
12790 h != NULL && i != idx ;
12791 i--, h = h->next);
12792 if (!h)
12793 return 1;
12794
Adis Nezirovic79beb242015-07-06 15:41:02 +0200[diff] [blame]12795 key = sample_fetch_as_type(s->be, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL, expr, SMP_T_STR);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12796 if (!key)
12797 return 1;
12798
12799 if (cap[h->index] == NULL)
12800 cap[h->index] = pool_alloc2(h->pool);
12801
12802 if (cap[h->index] == NULL) /* no more capture memory */
12803 return 1;
12804
12805 len = key->data.str.len;
12806 if (len > h->len)
12807 len = h->len;
12808
12809 memcpy(cap[h->index], key->data.str.str, len);
12810 cap[h->index][len] = 0;
12811 return 1;
12812}
12813
12814/* parse an "http-response capture" action. It takes a single argument which is
12815 * a sample fetch expression. It stores the expression into arg->act.p[0] and
12816 * the allocated hdr_cap struct od the preallocated id into arg->act.p[1].
12817 * It returns 0 on success, < 0 on error.
12818 */
12819int parse_http_res_capture(const char **args, int *orig_arg, struct proxy *px, struct http_res_rule *rule, char **err)
12820{
12821 struct sample_expr *expr;
12822 int cur_arg;
12823 int id;
12824 char *error;
12825
12826 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12827 if (strcmp(args[cur_arg], "if") == 0 ||
12828 strcmp(args[cur_arg], "unless") == 0)
12829 break;
12830
12831 if (cur_arg < *orig_arg + 3) {
12832 memprintf(err, "expects <expression> [ 'len' <length> | id <idx> ]");
12833 return -1;
12834 }
12835
12836 cur_arg = *orig_arg;
12837 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12838 if (!expr)
12839 return -1;
12840
12841 if (!(expr->fetch->val & SMP_VAL_FE_HRS_HDR)) {
12842 memprintf(err,
12843 "fetch method '%s' extracts information from '%s', none of which is available here",
12844 args[cur_arg-1], sample_src_names(expr->fetch->use));
12845 free(expr);
12846 return -1;
12847 }
12848
12849 if (!args[cur_arg] || !*args[cur_arg]) {
12850 memprintf(err, "expects 'len or 'id'");
12851 free(expr);
12852 return -1;
12853 }
12854
12855 if (strcmp(args[cur_arg], "id") != 0) {
12856 memprintf(err, "expects 'id', found '%s'", args[cur_arg]);
12857 free(expr);
12858 return -1;
12859 }
12860
12861 cur_arg++;
12862
12863 if (!args[cur_arg]) {
12864 memprintf(err, "missing id value");
12865 free(expr);
12866 return -1;
12867 }
12868
12869 id = strtol(args[cur_arg], &error, 10);
12870 if (*error != '\0') {
12871 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12872 free(expr);
12873 return -1;
12874 }
12875 cur_arg++;
12876
12877 LIST_INIT((struct list *)&rule->arg.act.p[0]);
12878 proxy->conf.args.ctx = ARGC_CAP;
12879
12880 rule->action = HTTP_RES_ACT_CUSTOM_CONT;
12881 rule->action_ptr = http_action_res_capture_by_id;
12882 rule->arg.act.p[0] = expr;
12883 rule->arg.act.p[1] = (void *)(long)id;
12884
12885 *orig_arg = cur_arg;
12886 return 0;
12887}
12888
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12889/*
12890 * Return the struct http_req_action_kw associated to a keyword.
12891 */
12892struct http_req_action_kw *action_http_req_custom(const char *kw)
12893{
12894 if (!LIST_ISEMPTY(&http_req_keywords.list)) {
12895 struct http_req_action_kw_list *kw_list;
12896 int i;
12897
12898 list_for_each_entry(kw_list, &http_req_keywords.list, list) {
12899 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
Thierry FOURNIER0e118632015-06-04 11:44:06 +0200[diff] [blame]12900 if (kw_list->kw[i].match_pfx &&
12901 strncmp(kw, kw_list->kw[i].kw, strlen(kw_list->kw[i].kw)) == 0)
12902 return &kw_list->kw[i];
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12903 if (!strcmp(kw, kw_list->kw[i].kw))
12904 return &kw_list->kw[i];
12905 }
12906 }
12907 }
12908 return NULL;
12909}
12910
12911/*
12912 * Return the struct http_res_action_kw associated to a keyword.
12913 */
12914struct http_res_action_kw *action_http_res_custom(const char *kw)
12915{
12916 if (!LIST_ISEMPTY(&http_res_keywords.list)) {
12917 struct http_res_action_kw_list *kw_list;
12918 int i;
12919
12920 list_for_each_entry(kw_list, &http_res_keywords.list, list) {
12921 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
Thierry FOURNIER0e118632015-06-04 11:44:06 +0200[diff] [blame]12922 if (kw_list->kw[i].match_pfx &&
12923 strncmp(kw, kw_list->kw[i].kw, strlen(kw_list->kw[i].kw)) == 0)
12924 return &kw_list->kw[i];
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12925 if (!strcmp(kw, kw_list->kw[i].kw))
12926 return &kw_list->kw[i];
12927 }
12928 }
12929 }
12930 return NULL;
12931}
12932
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12933/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12934/* All supported ACL keywords must be declared here. */
12935/************************************************************************/
12936
12937/* Note: must not be declared <const> as its list will be overwritten.
12938 * Please take care of keeping this list alphabetically sorted.
12939 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]12940static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12941 { "base", "base", PAT_MATCH_STR },
12942 { "base_beg", "base", PAT_MATCH_BEG },
12943 { "base_dir", "base", PAT_MATCH_DIR },
12944 { "base_dom", "base", PAT_MATCH_DOM },
12945 { "base_end", "base", PAT_MATCH_END },
12946 { "base_len", "base", PAT_MATCH_LEN },
12947 { "base_reg", "base", PAT_MATCH_REG },
12948 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]12949
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12950 { "cook", "req.cook", PAT_MATCH_STR },
12951 { "cook_beg", "req.cook", PAT_MATCH_BEG },
12952 { "cook_dir", "req.cook", PAT_MATCH_DIR },
12953 { "cook_dom", "req.cook", PAT_MATCH_DOM },
12954 { "cook_end", "req.cook", PAT_MATCH_END },
12955 { "cook_len", "req.cook", PAT_MATCH_LEN },
12956 { "cook_reg", "req.cook", PAT_MATCH_REG },
12957 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12958
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12959 { "hdr", "req.hdr", PAT_MATCH_STR },
12960 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
12961 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
12962 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
12963 { "hdr_end", "req.hdr", PAT_MATCH_END },
12964 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
12965 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
12966 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12967
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12968 /* these two declarations uses strings with list storage (in place
12969 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
12970 * and delete functions are relative to the list management. The parse
12971 * and match method are related to the corresponding fetch methods. This
12972 * is very particular ACL declaration mode.
12973 */
12974 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
12975 { "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]12976
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12977 { "path", "path", PAT_MATCH_STR },
12978 { "path_beg", "path", PAT_MATCH_BEG },
12979 { "path_dir", "path", PAT_MATCH_DIR },
12980 { "path_dom", "path", PAT_MATCH_DOM },
12981 { "path_end", "path", PAT_MATCH_END },
12982 { "path_len", "path", PAT_MATCH_LEN },
12983 { "path_reg", "path", PAT_MATCH_REG },
12984 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12985
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12986 { "req_ver", "req.ver", PAT_MATCH_STR },
12987 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12988
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12989 { "scook", "res.cook", PAT_MATCH_STR },
12990 { "scook_beg", "res.cook", PAT_MATCH_BEG },
12991 { "scook_dir", "res.cook", PAT_MATCH_DIR },
12992 { "scook_dom", "res.cook", PAT_MATCH_DOM },
12993 { "scook_end", "res.cook", PAT_MATCH_END },
12994 { "scook_len", "res.cook", PAT_MATCH_LEN },
12995 { "scook_reg", "res.cook", PAT_MATCH_REG },
12996 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12997
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12998 { "shdr", "res.hdr", PAT_MATCH_STR },
12999 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
13000 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
13001 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
13002 { "shdr_end", "res.hdr", PAT_MATCH_END },
13003 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
13004 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
13005 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13006
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13007 { "url", "url", PAT_MATCH_STR },
13008 { "url_beg", "url", PAT_MATCH_BEG },
13009 { "url_dir", "url", PAT_MATCH_DIR },
13010 { "url_dom", "url", PAT_MATCH_DOM },
13011 { "url_end", "url", PAT_MATCH_END },
13012 { "url_len", "url", PAT_MATCH_LEN },
13013 { "url_reg", "url", PAT_MATCH_REG },
13014 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13015
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13016 { "urlp", "urlp", PAT_MATCH_STR },
13017 { "urlp_beg", "urlp", PAT_MATCH_BEG },
13018 { "urlp_dir", "urlp", PAT_MATCH_DIR },
13019 { "urlp_dom", "urlp", PAT_MATCH_DOM },
13020 { "urlp_end", "urlp", PAT_MATCH_END },
13021 { "urlp_len", "urlp", PAT_MATCH_LEN },
13022 { "urlp_reg", "urlp", PAT_MATCH_REG },
13023 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13024
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]13025 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13026}};
13027
13028/************************************************************************/
13029/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]13030/************************************************************************/
13031/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]13032static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13033 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13034 { "base32", smp_fetch_base32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13035 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
13036
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]13037 /* capture are allocated and are permanent in the stream */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]13038 { "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]13039
13040 /* retrieve these captures from the HTTP logs */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]13041 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
13042 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
13043 { "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]13044
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]13045 { "capture.res.hdr", smp_fetch_capture_header_res, ARG1(1,SINT), NULL, SMP_T_STR, SMP_USE_HRSHP },
13046 { "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]13047
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13048 /* cookie is valid in both directions (eg: for "stick ...") but cook*
13049 * are only here to match the ACL's name, are request-only and are used
13050 * for ACL compatibility only.
13051 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13052 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
13053 { "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]13054 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
13055 { "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]13056
13057 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
13058 * only here to match the ACL's name, are request-only and are used for
13059 * ACL compatibility only.
13060 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13061 { "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]13062 { "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]13063 { "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]13064 { "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]13065
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]13066 { "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]13067 { "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]13068 { "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]13069 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13070 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]13071 { "query", smp_fetch_query, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13072
13073 /* HTTP protocol on the request path */
13074 { "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]13075 { "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]13076
13077 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13078 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
13079 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13080
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]13081 { "req.body", smp_fetch_body, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13082 { "req.body_len", smp_fetch_body_len, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
13083 { "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]13084 { "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]13085
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13086 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13087 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
13088 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13089
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13090 /* 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]13091 { "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]13092 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
13093 { "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]13094
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13095 { "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]13096 { "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]13097 { "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]13098 { "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]13099 { "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]13100 { "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]13101 { "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]13102
13103 /* 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]13104 { "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]13105 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
13106 { "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]13107
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13108 { "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]13109 { "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]13110 { "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]13111 { "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]13112 { "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]13113 { "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]13114 { "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]13115
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13116 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13117 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13118 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
13119 { "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]13120 { "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]13121
13122 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13123 { "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]13124 { "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]13125 { "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]13126 { "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]13127
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13128 { "status", smp_fetch_stcode, 0, NULL, SMP_T_SINT, SMP_USE_HRSHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13129 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13130 { "url32", smp_fetch_url32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]13131 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13132 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13133 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]13134 { "url_param", smp_fetch_url_param, ARG2(0,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
13135 { "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]13136 { "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]13137 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]13138}};
13139
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13140
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13141/************************************************************************/
13142/* All supported converter keywords must be declared here. */
13143/************************************************************************/
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13144/* Note: must not be declared <const> as its list will be overwritten */
13145static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13146 { "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]13147 { "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]13148 { "capture-req", smp_conv_req_capture, ARG1(1,SINT), NULL, SMP_T_STR, SMP_T_STR},
13149 { "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]13150 { "url_dec", sample_conv_url_dec, 0, NULL, SMP_T_STR, SMP_T_STR},
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13151 { NULL, NULL, 0, 0, 0 },
13152}};
13153
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]13154
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13155/************************************************************************/
13156/* All supported http-request action keywords must be declared here. */
13157/************************************************************************/
13158struct http_req_action_kw_list http_req_actions = {
13159 .scope = "http",
13160 .kw = {
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]13161 { "capture", parse_http_req_capture },
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13162 { "set-method", parse_set_req_line },
13163 { "set-path", parse_set_req_line },
13164 { "set-query", parse_set_req_line },
13165 { "set-uri", parse_set_req_line },
Willy Tarreaucb703b02015-04-03 09:52:01 +0200[diff] [blame]13166 { NULL, NULL }
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13167 }
13168};
13169
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13170struct http_res_action_kw_list http_res_actions = {
13171 .scope = "http",
13172 .kw = {
13173 { "capture", parse_http_res_capture },
13174 { NULL, NULL }
13175 }
13176};
13177
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13178__attribute__((constructor))
13179static void __http_protocol_init(void)
13180{
13181 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]13182 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13183 sample_register_convs(&sample_conv_kws);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13184 http_req_keywords_register(&http_req_actions);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13185 http_res_keywords_register(&http_res_actions);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13186}
13187
13188
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]13189/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]13190 * Local variables:
13191 * c-indent-level: 8
13192 * c-basic-offset: 8
13193 * End:
13194 */