Gitiles
Code Review Sign In
git01.mediatek.com / haproxy / 161d45ffc72b2f6574094c26c220367fd83fc851 / . / src / proto_http.c
blob: 02ff485d4451a4ca570d15709ec040dad0311a5d [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 Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5035
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5036 /* FIXME: We need a more portable way of releasing a backend's and a
5037 * server's connections. We need a safer way to reinitialize buffer
5038 * flags. We also need a more accurate method for computing per-request
5039 * data.
5040 */
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5041 srv_conn = objt_conn(s->si[1].end);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5042
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5043 /* unless we're doing keep-alive, we want to quickly close the connection
5044 * to the server.
5045 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5046 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5047 !si_conn_ready(&s->si[1])) {
5048 s->si[1].flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
5049 si_shutr(&s->si[1]);
5050 si_shutw(&s->si[1]);
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5051 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5052
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5053 if (s->flags & SF_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5054 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]5055 if (unlikely(s->srv_conn))
5056 sess_change_server(s, NULL);
5057 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5058
5059 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5060 stream_process_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5061
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5062 if (s->txn->status) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5063 int n;
5064
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5065 n = s->txn->status / 100;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5066 if (n < 1 || n > 5)
5067 n = 0;
5068
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5069 if (fe->mode == PR_MODE_HTTP) {
5070 fe->fe_counters.p.http.rsp[n]++;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5071 if (s->comp_algo && (s->flags & SF_COMP_READY))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5072 fe->fe_counters.p.http.comp_rsp++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5073 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5074 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5075 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5076 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5077 s->be->be_counters.p.http.cum_req++;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5078 if (s->comp_algo && (s->flags & SF_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5079 s->be->be_counters.p.http.comp_rsp++;
5080 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5081 }
5082
5083 /* don't count other requests' data */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5084 s->logs.bytes_in -= s->req.buf->i;
5085 s->logs.bytes_out -= s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5086
5087 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5088 if (!LIST_ISEMPTY(&fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5089 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5090 (!(fe->options & PR_O_NULLNOLOG) || s->req.total)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5091 s->do_log(s);
5092 }
5093
Willy Tarreaud713bcc2014-06-25 15:36:04 +0200[diff] [blame]5094 /* stop tracking content-based counters */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5095 stream_stop_content_counters(s);
5096 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +0200[diff] [blame]5097
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5098 s->logs.accept_date = date; /* user-visible date for logging */
5099 s->logs.tv_accept = now; /* corrected date for internal use */
5100 tv_zero(&s->logs.tv_request);
5101 s->logs.t_queue = -1;
5102 s->logs.t_connect = -1;
5103 s->logs.t_data = -1;
5104 s->logs.t_close = 0;
5105 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
5106 s->logs.srv_queue_size = 0; /* we will get this number soon */
5107
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5108 s->logs.bytes_in = s->req.total = s->req.buf->i;
5109 s->logs.bytes_out = s->res.total = s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5110
5111 if (s->pend_pos)
5112 pendconn_free(s->pend_pos);
5113
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5114 if (objt_server(s->target)) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5115 if (s->flags & SF_CURR_SESS) {
5116 s->flags &= ~SF_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5117 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5118 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5119 if (may_dequeue_tasks(objt_server(s->target), s->be))
5120 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5121 }
5122
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5123 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5124
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5125 /* only release our endpoint if we don't intend to reuse the
5126 * connection.
5127 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5128 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5129 !si_conn_ready(&s->si[1])) {
5130 si_release_endpoint(&s->si[1]);
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5131 srv_conn = NULL;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5132 }
5133
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5134 s->si[1].state = s->si[1].prev_state = SI_ST_INI;
5135 s->si[1].err_type = SI_ET_NONE;
5136 s->si[1].conn_retries = 0; /* used for logging too */
5137 s->si[1].exp = TICK_ETERNITY;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5138 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]5139 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);
5140 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]5141 s->flags &= ~(SF_DIRECT|SF_ASSIGNED|SF_ADDR_SET|SF_BE_ASSIGNED|SF_FORCE_PRST|SF_IGNORE_PRST);
5142 s->flags &= ~(SF_CURR_SESS|SF_REDIRECTABLE|SF_SRV_REUSED);
5143 s->flags &= ~(SF_ERR_MASK|SF_FINST_MASK|SF_REDISP);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]5144
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5145 s->txn->meth = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5146 http_reset_txn(s);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5147 s->txn->flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5148
5149 if (prev_status == 401 || prev_status == 407) {
5150 /* In HTTP keep-alive mode, if we receive a 401, we still have
5151 * a chance of being able to send the visitor again to the same
5152 * server over the same connection. This is required by some
5153 * broken protocols such as NTLM, and anyway whenever there is
5154 * an opportunity for sending the challenge to the proper place,
5155 * it's better to do it (at least it helps with debugging).
5156 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5157 s->txn->flags |= TX_PREFER_LAST;
Willy Tarreau387ebf82015-08-04 19:24:13 +0200[diff] [blame]5158 srv_conn->flags |= CO_FL_PRIVATE;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5159 }
5160
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5161 if (fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5162 s->si[1].flags |= SI_FL_INDEP_STR;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5163
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5164 if (fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5165 s->req.flags |= CF_NEVER_WAIT;
5166 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]5167 }
5168
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5169 /* if the request buffer is not empty, it means we're
5170 * about to process another request, so send pending
5171 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5172 * Just don't do this if the buffer is close to be full,
5173 * because the request will wait for it to flush a little
5174 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5175 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5176 if (s->req.buf->i) {
5177 if (s->res.buf->o &&
5178 !buffer_full(s->res.buf, global.tune.maxrewrite) &&
5179 bi_end(s->res.buf) <= s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)
5180 s->res.flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5181 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5182
5183 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5184 channel_auto_read(&s->req);
5185 channel_auto_close(&s->req);
5186 channel_auto_read(&s->res);
5187 channel_auto_close(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5188
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]5189 /* we're in keep-alive with an idle connection, monitor it */
Willy Tarreau4320eaa2015-08-05 11:08:30 +0200[diff] [blame]5190 if (srv_conn) {
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5191 srv = objt_server(srv_conn->target);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5192 if (!srv)
5193 si_idle_conn(&s->si[1], NULL);
5194 else if ((srv_conn->flags & CO_FL_PRIVATE) ||
5195 ((s->be->options & PR_O_REUSE_MASK) == PR_O_REUSE_NEVR))
5196 si_idle_conn(&s->si[1], &srv->priv_conns);
5197 else
5198 si_idle_conn(&s->si[1], &srv->idle_conns);
Willy Tarreau4320eaa2015-08-05 11:08:30 +0200[diff] [blame]5199 }
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]5200
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]5201 s->req.analysers = strm_li(s)->analysers;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5202 s->res.analysers = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5203}
5204
5205
5206/* This function updates the request state machine according to the response
5207 * state machine and buffer flags. It returns 1 if it changes anything (flag
5208 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5209 * it is only used to find when a request/response couple is complete. Both
5210 * this function and its equivalent should loop until both return zero. It
5211 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5212 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5213int http_sync_req_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5214{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5215 struct channel *chn = &s->req;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5216 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5217 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5218 unsigned int old_state = txn->req.msg_state;
5219
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5220 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
5221 return 0;
5222
5223 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5224 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5225 * We can shut the read side unless we want to abort_on_close,
5226 * or we have a POST request. The issue with POST requests is
5227 * that some browsers still send a CRLF after the request, and
5228 * this CRLF must be read so that it does not remain in the kernel
5229 * buffers, otherwise a close could cause an RST on some systems
5230 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5231 * Note that if we're using keep-alive on the client side, we'd
5232 * rather poll now and keep the polling enabled for the whole
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5233 * stream's life than enabling/disabling it between each
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5234 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5235 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5236 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5237 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5238 !(s->be->options & PR_O_ABRT_CLOSE) &&
5239 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5240 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5241
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5242 /* if the server closes the connection, we want to immediately react
5243 * and close the socket to save packets and syscalls.
5244 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5245 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5246
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5247 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
5248 goto wait_other_side;
5249
5250 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
5251 /* The server has not finished to respond, so we
5252 * don't want to move in order not to upset it.
5253 */
5254 goto wait_other_side;
5255 }
5256
5257 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
5258 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5259 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5260 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5261 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5262 goto wait_other_side;
5263 }
5264
5265 /* When we get here, it means that both the request and the
5266 * response have finished receiving. Depending on the connection
5267 * mode, we'll have to wait for the last bytes to leave in either
5268 * direction, and sometimes for a close to be effective.
5269 */
5270
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5271 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5272 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5273 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
5274 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5275 }
5276 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5277 /* Option forceclose is set, or either side wants to close,
5278 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5279 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5280 * once both states are CLOSED.
5281 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5282 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5283 channel_shutr_now(chn);
5284 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5285 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5286 }
5287 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5288 /* The last possible modes are keep-alive and tunnel. Tunnel mode
5289 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5290 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5291 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
5292 channel_auto_read(chn);
5293 txn->req.msg_state = HTTP_MSG_TUNNEL;
5294 chn->flags |= CF_NEVER_WAIT;
5295 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5296 }
5297
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5298 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5299 /* if we've just closed an output, let's switch */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5300 s->si[1].flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5301
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5302 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5303 txn->req.msg_state = HTTP_MSG_CLOSING;
5304 goto http_msg_closing;
5305 }
5306 else {
5307 txn->req.msg_state = HTTP_MSG_CLOSED;
5308 goto http_msg_closed;
5309 }
5310 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5311 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5312 }
5313
5314 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
5315 http_msg_closing:
5316 /* nothing else to forward, just waiting for the output buffer
5317 * to be empty and for the shutw_now to take effect.
5318 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5319 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5320 txn->req.msg_state = HTTP_MSG_CLOSED;
5321 goto http_msg_closed;
5322 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5323 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5324 txn->req.msg_state = HTTP_MSG_ERROR;
5325 goto wait_other_side;
5326 }
5327 }
5328
5329 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
5330 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5331 /* see above in MSG_DONE why we only do this in these states */
5332 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5333 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5334 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]5335 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5336 goto wait_other_side;
5337 }
5338
5339 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5340 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5341}
5342
5343
5344/* This function updates the response state machine according to the request
5345 * state machine and buffer flags. It returns 1 if it changes anything (flag
5346 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5347 * it is only used to find when a request/response couple is complete. Both
5348 * this function and its equivalent should loop until both return zero. It
5349 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5350 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5351int http_sync_res_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5352{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5353 struct channel *chn = &s->res;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5354 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5355 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5356 unsigned int old_state = txn->rsp.msg_state;
5357
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5358 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
5359 return 0;
5360
5361 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
5362 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5363 * still monitor the server connection for a possible close
5364 * while the request is being uploaded, so we don't disable
5365 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5366 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5367 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5368
5369 if (txn->req.msg_state == HTTP_MSG_ERROR)
5370 goto wait_other_side;
5371
5372 if (txn->req.msg_state < HTTP_MSG_DONE) {
5373 /* The client seems to still be sending data, probably
5374 * because we got an error response during an upload.
5375 * We have the choice of either breaking the connection
5376 * or letting it pass through. Let's do the later.
5377 */
5378 goto wait_other_side;
5379 }
5380
5381 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
5382 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5383 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5384 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5385 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5386 goto wait_other_side;
5387 }
5388
5389 /* When we get here, it means that both the request and the
5390 * response have finished receiving. Depending on the connection
5391 * mode, we'll have to wait for the last bytes to leave in either
5392 * direction, and sometimes for a close to be effective.
5393 */
5394
5395 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5396 /* Server-close mode : shut read and wait for the request
5397 * side to close its output buffer. The caller will detect
5398 * when we're in DONE and the other is in CLOSED and will
5399 * catch that for the final cleanup.
5400 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5401 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
5402 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5403 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5404 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5405 /* Option forceclose is set, or either side wants to close,
5406 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5407 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5408 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5409 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5410 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5411 channel_shutr_now(chn);
5412 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5413 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5414 }
5415 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5416 /* The last possible modes are keep-alive and tunnel. Tunnel will
5417 * need to forward remaining data. Keep-alive will need to monitor
5418 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5419 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5420 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5421 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5422 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
5423 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5424 }
5425
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5426 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5427 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5428 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5429 txn->rsp.msg_state = HTTP_MSG_CLOSING;
5430 goto http_msg_closing;
5431 }
5432 else {
5433 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5434 goto http_msg_closed;
5435 }
5436 }
5437 goto wait_other_side;
5438 }
5439
5440 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
5441 http_msg_closing:
5442 /* nothing else to forward, just waiting for the output buffer
5443 * to be empty and for the shutw_now to take effect.
5444 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5445 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5446 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5447 goto http_msg_closed;
5448 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5449 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5450 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5451 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5452 if (objt_server(s->target))
5453 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5454 goto wait_other_side;
5455 }
5456 }
5457
5458 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
5459 http_msg_closed:
5460 /* drop any pending data */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5461 channel_truncate(chn);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5462 channel_auto_close(chn);
5463 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5464 goto wait_other_side;
5465 }
5466
5467 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5468 /* We force the response to leave immediately if we're waiting for the
5469 * other side, since there is no pending shutdown to push it out.
5470 */
5471 if (!channel_is_empty(chn))
5472 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5473 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5474}
5475
5476
5477/* Resync the request and response state machines. Return 1 if either state
5478 * changes.
5479 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5480int http_resync_states(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5481{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5482 struct http_txn *txn = s->txn;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5483 int old_req_state = txn->req.msg_state;
5484 int old_res_state = txn->rsp.msg_state;
5485
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5486 http_sync_req_state(s);
5487 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5488 if (!http_sync_res_state(s))
5489 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5490 if (!http_sync_req_state(s))
5491 break;
5492 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]5493
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5494 /* OK, both state machines agree on a compatible state.
5495 * There are a few cases we're interested in :
5496 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
5497 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
5498 * directions, so let's simply disable both analysers.
5499 * - HTTP_MSG_CLOSED on the response only means we must abort the
5500 * request.
5501 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
5502 * with server-close mode means we've completed one request and we
5503 * must re-initialize the server connection.
5504 */
5505
5506 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
5507 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
5508 (txn->req.msg_state == HTTP_MSG_CLOSED &&
5509 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5510 s->req.analysers = 0;
5511 channel_auto_close(&s->req);
5512 channel_auto_read(&s->req);
5513 s->res.analysers = 0;
5514 channel_auto_close(&s->res);
5515 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5516 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5517 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5518 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->res.flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]5519 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5520 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5521 s->res.analysers = 0;
5522 channel_auto_close(&s->res);
5523 channel_auto_read(&s->res);
5524 s->req.analysers = 0;
5525 channel_abort(&s->req);
5526 channel_auto_close(&s->req);
5527 channel_auto_read(&s->req);
5528 channel_truncate(&s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5529 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5530 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
5531 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5532 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5533 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
5534 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
5535 /* server-close/keep-alive: terminate this transaction,
5536 * possibly killing the server connection and reinitialize
5537 * a fresh-new transaction.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5538 */
5539 http_end_txn_clean_session(s);
5540 }
5541
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5542 return txn->req.msg_state != old_req_state ||
5543 txn->rsp.msg_state != old_res_state;
5544}
5545
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5546/* This function is an analyser which forwards request body (including chunk
5547 * sizes if any). It is called as soon as we must forward, even if we forward
5548 * zero byte. The only situation where it must not be called is when we're in
5549 * tunnel mode and we want to forward till the close. It's used both to forward
5550 * remaining data and to resync after end of body. It expects the msg_state to
5551 * 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]5552 * 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]5553 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5554 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5555 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5556int http_request_forward_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5557{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5558 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5559 struct http_txn *txn = s->txn;
5560 struct http_msg *msg = &s->txn->req;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5561
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5562 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5563 return 0;
5564
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5565 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]5566 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5567 /* Output closed while we were sending data. We must abort and
5568 * wake the other side up.
5569 */
5570 msg->msg_state = HTTP_MSG_ERROR;
5571 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5572 return 1;
5573 }
5574
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5575 /* Note that we don't have to send 100-continue back because we don't
5576 * need the data to complete our job, and it's up to the server to
5577 * decide whether to return 100, 417 or anything else in return of
5578 * an "Expect: 100-continue" header.
5579 */
5580
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]5581 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5582 /* we have msg->sov which points to the first byte of message
5583 * body, and req->buf.p still points to the beginning of the
5584 * message. We forward the headers now, as we don't need them
5585 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5586 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5587 b_adv(req->buf, msg->sov);
5588 msg->next -= msg->sov;
5589 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5590
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5591 /* The previous analysers guarantee that the state is somewhere
5592 * between MSG_BODY and the first MSG_DATA. So msg->sol and
5593 * msg->next are always correct.
5594 */
5595 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
5596 if (msg->flags & HTTP_MSGF_TE_CHNK)
5597 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
5598 else
5599 msg->msg_state = HTTP_MSG_DATA;
5600 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5601 }
5602
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5603 /* Some post-connect processing might want us to refrain from starting to
5604 * forward data. Currently, the only reason for this is "balance url_param"
5605 * whichs need to parse/process the request after we've enabled forwarding.
5606 */
5607 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5608 if (!(s->res.flags & CF_READ_ATTACHED)) {
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5609 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +0200[diff] [blame]5610 req->flags |= CF_WAKE_CONNECT;
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5611 goto missing_data;
5612 }
5613 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5614 }
5615
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5616 /* in most states, we should abort in case of early close */
5617 channel_auto_close(req);
5618
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5619 if (req->to_forward) {
5620 /* We can't process the buffer's contents yet */
5621 req->flags |= CF_WAKE_WRITE;
5622 goto missing_data;
5623 }
5624
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5625 while (1) {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5626 if (msg->msg_state == HTTP_MSG_DATA) {
5627 /* must still forward */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5628 /* we may have some pending data starting at req->buf->p */
5629 if (msg->chunk_len > req->buf->i - msg->next) {
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5630 req->flags |= CF_WAKE_WRITE;
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5631 goto missing_data;
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5632 }
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5633 msg->next += msg->chunk_len;
5634 msg->chunk_len = 0;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5635
5636 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5637 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5638 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5639 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5640 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5641 }
5642 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5643 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5644 * set ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5645 * TRAILERS state.
5646 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5647 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5648
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5649 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5650 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5651 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5652 stream_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5653 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5654 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]5655 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5656 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5657 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5658 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5659 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5660 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5661 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5662
5663 if (ret == 0)
5664 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5665 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5666 stream_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5667 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5668 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]5669 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5670 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5671 /* we're in MSG_CHUNK_SIZE now */
5672 }
5673 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5674 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5675
5676 if (ret == 0)
5677 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5678 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5679 stream_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5680 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5681 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]5682 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5683 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5684 /* we're in HTTP_MSG_DONE now */
5685 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5686 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5687 int old_state = msg->msg_state;
5688
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5689 /* other states, DONE...TUNNEL */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5690
5691 /* we may have some pending data starting at req->buf->p
5692 * such as last chunk of data or trailers.
5693 */
5694 b_adv(req->buf, msg->next);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5695 if (unlikely(!(s->req.flags & CF_WROTE_DATA)))
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]5696 msg->sov -= msg->next;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5697 msg->next = 0;
5698
Willy Tarreaubbfb6c42015-05-11 18:30:33 +0200[diff] [blame]5699 /* we don't want to forward closes on DONE except in
5700 * tunnel mode.
5701 */
5702 if ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5703 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5704 if (http_resync_states(s)) {
5705 /* some state changes occurred, maybe the analyser
5706 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]5707 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5708 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5709 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5710 /* request errors are most likely due to
5711 * the server aborting the transfer.
5712 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5713 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5714 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5715 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5716 http_capture_bad_message(&sess->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5717 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5718 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5719 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5720 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5721
5722 /* If "option abortonclose" is set on the backend, we
5723 * want to monitor the client's connection and forward
5724 * any shutdown notification to the server, which will
5725 * decide whether to close or to go on processing the
Willy Tarreaubbfb6c42015-05-11 18:30:33 +0200[diff] [blame]5726 * request. We only do that in tunnel mode, and not in
5727 * other modes since it can be abused to exhaust source
5728 * ports.
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5729 */
5730 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5731 channel_auto_read(req);
Willy Tarreaubbfb6c42015-05-11 18:30:33 +0200[diff] [blame]5732 if ((req->flags & (CF_SHUTR|CF_READ_NULL)) &&
5733 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN))
5734 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5735 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5736 }
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5737 else if (s->txn->meth == HTTP_METH_POST) {
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5738 /* POST requests may require to read extra CRLF
5739 * sent by broken browsers and which could cause
5740 * an RST to be sent upon close on some systems
5741 * (eg: Linux).
5742 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5743 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5744 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5745
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5746 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5747 }
5748 }
5749
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5750 missing_data:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5751 /* we may have some pending data starting at req->buf->p */
5752 b_adv(req->buf, msg->next);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5753 if (unlikely(!(s->req.flags & CF_WROTE_DATA)))
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]5754 msg->sov -= msg->next + MIN(msg->chunk_len, req->buf->i);
5755
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5756 msg->next = 0;
5757 msg->chunk_len -= channel_forward(req, msg->chunk_len);
5758
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5759 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5760 if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5761 if (!(s->flags & SF_ERR_MASK))
5762 s->flags |= SF_ERR_CLICL;
5763 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5764 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5765 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5766 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5767 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5768 }
5769
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5770 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5771 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5772 if (objt_server(s->target))
5773 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5774
5775 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5776 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5777
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5778 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5779 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5780 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5781
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5782 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5783 * 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]5784 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5785 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5786 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5787
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5788 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5789 * 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]5790 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5791 * modes are already handled by the stream sock layer. We must not do
5792 * this in content-length mode because it could present the MSG_MORE
5793 * flag with the last block of forwarded data, which would cause an
5794 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5795 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5796 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5797 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5798
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5799 return 0;
5800
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5801 return_bad_req: /* let's centralize all bad requests */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5802 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5803 if (sess->listener->counters)
5804 sess->listener->counters->failed_req++;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5805
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5806 return_bad_req_stats_ok:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5807 /* we may have some pending data starting at req->buf->p */
5808 b_adv(req->buf, msg->next);
5809 msg->next = 0;
5810
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5811 txn->req.msg_state = HTTP_MSG_ERROR;
5812 if (txn->status) {
5813 /* Note: we don't send any error if some data were already sent */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5814 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5815 } else {
5816 txn->status = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5817 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5818 }
5819 req->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5820 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]5821
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5822 if (!(s->flags & SF_ERR_MASK))
5823 s->flags |= SF_ERR_PRXCOND;
5824 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5825 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5826 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5827 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5828 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5829 }
5830 return 0;
5831
5832 aborted_xfer:
5833 txn->req.msg_state = HTTP_MSG_ERROR;
5834 if (txn->status) {
5835 /* Note: we don't send any error if some data were already sent */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5836 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5837 } else {
5838 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5839 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5840 }
5841 req->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5842 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]5843
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5844 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5845 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5846 if (objt_server(s->target))
5847 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5848
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5849 if (!(s->flags & SF_ERR_MASK))
5850 s->flags |= SF_ERR_SRVCL;
5851 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5852 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5853 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5854 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5855 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5856 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5857 return 0;
5858}
5859
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5860/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5861 * processing can continue on next analysers, or zero if it either needs more
5862 * data or wants to immediately abort the response (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5863 * 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]5864 * when it has nothing left to do, and may remove any analyser when it wants to
5865 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5866 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5867int http_wait_for_response(struct stream *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5868{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5869 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5870 struct http_txn *txn = s->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5871 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5872 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5873 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5874 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5875 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5876
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5877 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]5878 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5879 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5880 rep,
5881 rep->rex, rep->wex,
5882 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5883 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5884 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5885
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5886 /*
5887 * Now parse the partial (or complete) lines.
5888 * We will check the response syntax, and also join multi-line
5889 * headers. An index of all the lines will be elaborated while
5890 * parsing.
5891 *
5892 * For the parsing, we use a 28 states FSM.
5893 *
5894 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5895 * rep->buf->p = beginning of response
5896 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5897 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5898 * msg->eol = end of current header or line (LF or CRLF)
5899 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5900 */
5901
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5902 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5903 /* There's a protected area at the end of the buffer for rewriting
5904 * purposes. We don't want to start to parse the request if the
5905 * protected area is affected, because we may have to move processed
5906 * data later, which is much more complicated.
5907 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5908 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]5909 if (unlikely(!channel_is_rewritable(rep))) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5910 /* some data has still not left the buffer, wake us once that's done */
5911 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5912 goto abort_response;
5913 channel_dont_close(rep);
5914 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5915 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5916 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5917 }
5918
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5919 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5920 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5921 buffer_slow_realign(rep->buf);
5922
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5923 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5924 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5925 }
5926
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5927 /* 1: we might have to print this header in debug mode */
5928 if (unlikely((global.mode & MODE_DEBUG) &&
5929 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]5930 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5931 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5932
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5933 sol = rep->buf->p;
5934 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5935 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5936
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5937 sol += hdr_idx_first_pos(&txn->hdr_idx);
5938 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5939
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5940 while (cur_idx) {
5941 eol = sol + txn->hdr_idx.v[cur_idx].len;
5942 debug_hdr("srvhdr", s, sol, eol);
5943 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5944 cur_idx = txn->hdr_idx.v[cur_idx].next;
5945 }
5946 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5947
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5948 /*
5949 * Now we quickly check if we have found a full valid response.
5950 * If not so, we check the FD and buffer states before leaving.
5951 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5952 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5953 * responses are checked first.
5954 *
5955 * Depending on whether the client is still there or not, we
5956 * may send an error response back or not. Note that normally
5957 * we should only check for HTTP status there, and check I/O
5958 * errors somewhere else.
5959 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5960
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5961 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5962 /* Invalid response */
5963 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5964 /* we detected a parsing error. We want to archive this response
5965 * in the dedicated proxy area for later troubleshooting.
5966 */
5967 hdr_response_bad:
5968 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5969 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]5970
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5971 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5972 if (objt_server(s->target)) {
5973 objt_server(s->target)->counters.failed_resp++;
5974 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5975 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5976 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5977 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5978 rep->analysers = 0;
5979 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5980 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5981 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5982 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5983
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5984 if (!(s->flags & SF_ERR_MASK))
5985 s->flags |= SF_ERR_PRXCOND;
5986 if (!(s->flags & SF_FINST_MASK))
5987 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5988
5989 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5990 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5991
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5992 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5993 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5994 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5995 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5996 goto hdr_response_bad;
5997 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5998
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5999 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6000 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6001 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6002 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]6003 else if (txn->flags & TX_NOT_FIRST)
6004 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]6005
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6006 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6007 if (objt_server(s->target)) {
6008 objt_server(s->target)->counters.failed_resp++;
6009 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6010 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]6011
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6012 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6013 rep->analysers = 0;
6014 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6015 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6016 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6017 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]6018
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6019 if (!(s->flags & SF_ERR_MASK))
6020 s->flags |= SF_ERR_SRVCL;
6021 if (!(s->flags & SF_FINST_MASK))
6022 s->flags |= SF_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]6023 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6024 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6025
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +0200[diff] [blame]6026 /* read timeout : return a 504 to the client. */
6027 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6028 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6029 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]6030 else if (txn->flags & TX_NOT_FIRST)
6031 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6032
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6033 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6034 if (objt_server(s->target)) {
6035 objt_server(s->target)->counters.failed_resp++;
6036 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6037 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6038
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6039 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6040 rep->analysers = 0;
6041 txn->status = 504;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6042 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6043 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6044 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]6045
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6046 if (!(s->flags & SF_ERR_MASK))
6047 s->flags |= SF_ERR_SRVTO;
6048 if (!(s->flags & SF_FINST_MASK))
6049 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6050 return 0;
6051 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]6052
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6053 /* client abort with an abortonclose */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6054 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]6055 sess->fe->fe_counters.cli_aborts++;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6056 s->be->be_counters.cli_aborts++;
6057 if (objt_server(s->target))
6058 objt_server(s->target)->counters.cli_aborts++;
6059
6060 rep->analysers = 0;
6061 channel_auto_close(rep);
6062
6063 txn->status = 400;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6064 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6065 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6066
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6067 if (!(s->flags & SF_ERR_MASK))
6068 s->flags |= SF_ERR_CLICL;
6069 if (!(s->flags & SF_FINST_MASK))
6070 s->flags |= SF_FINST_H;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6071
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6072 /* process_stream() will take care of the error */
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6073 return 0;
6074 }
6075
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]6076 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6077 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]6078 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6079 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]6080 else if (txn->flags & TX_NOT_FIRST)
6081 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6082
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6083 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6084 if (objt_server(s->target)) {
6085 objt_server(s->target)->counters.failed_resp++;
6086 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6087 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6088
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6089 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6090 rep->analysers = 0;
6091 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6092 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6093 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6094 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6095
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6096 if (!(s->flags & SF_ERR_MASK))
6097 s->flags |= SF_ERR_SRVCL;
6098 if (!(s->flags & SF_FINST_MASK))
6099 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6100 return 0;
6101 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]6102
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6103 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6104 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6105 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6106 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]6107 else if (txn->flags & TX_NOT_FIRST)
6108 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]6109
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6110 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6111 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6112 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6113
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6114 if (!(s->flags & SF_ERR_MASK))
6115 s->flags |= SF_ERR_CLICL;
6116 if (!(s->flags & SF_FINST_MASK))
6117 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6118
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6119 /* process_stream() will take care of the error */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6120 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6121 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6122
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6123 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]6124 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6125 return 0;
6126 }
6127
6128 /* More interesting part now : we know that we have a complete
6129 * response which at least looks like HTTP. We have an indicator
6130 * of each header's length, so we can parse them quickly.
6131 */
6132
6133 if (unlikely(msg->err_pos >= 0))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6134 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]6135
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6136 /*
6137 * 1: get the status code
6138 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6139 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6140 if (n < 1 || n > 5)
6141 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6142 /* when the client triggers a 4xx from the server, it's most often due
6143 * to a missing object or permission. These events should be tracked
6144 * because if they happen often, it may indicate a brute force or a
6145 * vulnerability scan.
6146 */
6147 if (n == 4)
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6148 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6149
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6150 if (objt_server(s->target))
6151 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6152
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]6153 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
6154 * exactly one digit "." one digit. This check may be disabled using
6155 * option accept-invalid-http-response.
6156 */
6157 if (!(s->be->options2 & PR_O2_RSPBUG_OK)) {
6158 if (msg->sl.st.v_l != 8) {
6159 msg->err_pos = 0;
6160 goto hdr_response_bad;
6161 }
6162
6163 if (rep->buf->p[4] != '/' ||
6164 !isdigit((unsigned char)rep->buf->p[5]) ||
6165 rep->buf->p[6] != '.' ||
6166 !isdigit((unsigned char)rep->buf->p[7])) {
6167 msg->err_pos = 4;
6168 goto hdr_response_bad;
6169 }
6170 }
6171
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6172 /* check if the response is HTTP/1.1 or above */
6173 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6174 ((rep->buf->p[5] > '1') ||
6175 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6176 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6177
6178 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]6179 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]6180
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6181 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6182 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6183
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6184 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]6185
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]6186 /* Adjust server's health based on status code. Note: status codes 501
6187 * and 505 are triggered on demand by client request, so we must not
6188 * count them as server failures.
6189 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6190 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6191 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6192 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6193 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6194 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6195 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6196
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6197 /*
6198 * 2: check for cacheability.
6199 */
6200
6201 switch (txn->status) {
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]6202 case 100:
6203 /*
6204 * We may be facing a 100-continue response, in which case this
6205 * is not the right response, and we're waiting for the next one.
6206 * Let's allow this response to go to the client and wait for the
6207 * next one.
6208 */
6209 hdr_idx_init(&txn->hdr_idx);
6210 msg->next -= channel_forward(rep, msg->next);
6211 msg->msg_state = HTTP_MSG_RPBEFORE;
6212 txn->status = 0;
6213 s->logs.t_data = -1; /* was not a response yet */
6214 goto next_one;
6215
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6216 case 200:
6217 case 203:
6218 case 206:
6219 case 300:
6220 case 301:
6221 case 410:
6222 /* RFC2616 @13.4:
6223 * "A response received with a status code of
6224 * 200, 203, 206, 300, 301 or 410 MAY be stored
6225 * by a cache (...) unless a cache-control
6226 * directive prohibits caching."
6227 *
6228 * RFC2616 @9.5: POST method :
6229 * "Responses to this method are not cacheable,
6230 * unless the response includes appropriate
6231 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6232 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6233 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6234 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6235 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
6236 break;
6237 default:
6238 break;
6239 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6240
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6241 /*
6242 * 3: we may need to capture headers
6243 */
6244 s->logs.logwait &= ~LW_RESP;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6245 if (unlikely((s->logs.logwait & LW_RSPHDR) && s->res_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6246 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6247 s->res_cap, sess->fe->rsp_cap);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6248
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6249 /* 4: determine the transfer-length according to RFC2616 #4.4, updated
6250 * by RFC7230#3.3.3 :
6251 *
6252 * The length of a message body is determined by one of the following
6253 * (in order of precedence):
6254 *
6255 * 1. Any response to a HEAD request and any response with a 1xx
6256 * (Informational), 204 (No Content), or 304 (Not Modified) status
6257 * code is always terminated by the first empty line after the
6258 * header fields, regardless of the header fields present in the
6259 * message, and thus cannot contain a message body.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6260 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6261 * 2. Any 2xx (Successful) response to a CONNECT request implies that
6262 * the connection will become a tunnel immediately after the empty
6263 * line that concludes the header fields. A client MUST ignore any
6264 * Content-Length or Transfer-Encoding header fields received in
6265 * such a message.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6266 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6267 * 3. If a Transfer-Encoding header field is present and the chunked
6268 * transfer coding (Section 4.1) is the final encoding, the message
6269 * body length is determined by reading and decoding the chunked
6270 * data until the transfer coding indicates the data is complete.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6271 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6272 * If a Transfer-Encoding header field is present in a response and
6273 * the chunked transfer coding is not the final encoding, the
6274 * message body length is determined by reading the connection until
6275 * it is closed by the server. If a Transfer-Encoding header field
6276 * is present in a request and the chunked transfer coding is not
6277 * the final encoding, the message body length cannot be determined
6278 * reliably; the server MUST respond with the 400 (Bad Request)
6279 * status code and then close the connection.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6280 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6281 * If a message is received with both a Transfer-Encoding and a
6282 * Content-Length header field, the Transfer-Encoding overrides the
6283 * Content-Length. Such a message might indicate an attempt to
6284 * perform request smuggling (Section 9.5) or response splitting
6285 * (Section 9.4) and ought to be handled as an error. A sender MUST
6286 * remove the received Content-Length field prior to forwarding such
6287 * a message downstream.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6288 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6289 * 4. If a message is received without Transfer-Encoding and with
6290 * either multiple Content-Length header fields having differing
6291 * field-values or a single Content-Length header field having an
6292 * invalid value, then the message framing is invalid and the
6293 * recipient MUST treat it as an unrecoverable error. If this is a
6294 * request message, the server MUST respond with a 400 (Bad Request)
6295 * status code and then close the connection. If this is a response
6296 * message received by a proxy, the proxy MUST close the connection
6297 * to the server, discard the received response, and send a 502 (Bad
6298 * Gateway) response to the client. If this is a response message
6299 * received by a user agent, the user agent MUST close the
6300 * connection to the server and discard the received response.
6301 *
6302 * 5. If a valid Content-Length header field is present without
6303 * Transfer-Encoding, its decimal value defines the expected message
6304 * body length in octets. If the sender closes the connection or
6305 * the recipient times out before the indicated number of octets are
6306 * received, the recipient MUST consider the message to be
6307 * incomplete and close the connection.
6308 *
6309 * 6. If this is a request message and none of the above are true, then
6310 * the message body length is zero (no message body is present).
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6311 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6312 * 7. Otherwise, this is a response message without a declared message
6313 * body length, so the message body length is determined by the
6314 * number of octets received prior to the server closing the
6315 * connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6316 */
6317
6318 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6319 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6320 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6321 * FIXME: should we parse anyway and return an error on chunked encoding ?
6322 */
6323 if (txn->meth == HTTP_METH_HEAD ||
6324 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6325 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6326 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]6327 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6328 goto skip_content_length;
6329 }
6330
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6331 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6332 ctx.idx = 0;
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]6333 while (http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6334 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6335 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
6336 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6337 /* bad transfer-encoding (chunked followed by something else) */
6338 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6339 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6340 break;
6341 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6342 }
6343
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6344 /* Chunked responses must have their content-length removed */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6345 ctx.idx = 0;
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6346 if (use_close_only || (msg->flags & HTTP_MSGF_TE_CHNK)) {
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6347 while (http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx))
6348 http_remove_header2(msg, &txn->hdr_idx, &ctx);
6349 }
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6350 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]6351 signed long long cl;
6352
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6353 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6354 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6355 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6356 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6357
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6358 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6359 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6360 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6361 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6362
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6363 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6364 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6365 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6366 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6367
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6368 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6369 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6370 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6371 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6372
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6373 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6374 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6375 }
6376
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6377 if (sess->fe->comp || s->be->comp)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6378 select_compression_response_header(s, rep->buf);
6379
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6380skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6381 /* Now we have to check if we need to modify the Connection header.
6382 * This is more difficult on the response than it is on the request,
6383 * because we can have two different HTTP versions and we don't know
6384 * how the client will interprete a response. For instance, let's say
6385 * that the client sends a keep-alive request in HTTP/1.0 and gets an
6386 * HTTP/1.1 response without any header. Maybe it will bound itself to
6387 * HTTP/1.0 because it only knows about it, and will consider the lack
6388 * of header as a close, or maybe it knows HTTP/1.1 and can consider
6389 * the lack of header as a keep-alive. Thus we will use two flags
6390 * indicating how a request MAY be understood by the client. In case
6391 * of multiple possibilities, we'll fix the header to be explicit. If
6392 * ambiguous cases such as both close and keepalive are seen, then we
6393 * will fall back to explicit close. Note that we won't take risks with
6394 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6395 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6396 */
6397
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6398 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
6399 txn->status == 101)) {
6400 /* Either we've established an explicit tunnel, or we're
6401 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6402 * to understand the next protocols. We have to switch to tunnel
6403 * mode, so that we transfer the request and responses then let
6404 * this protocol pass unmodified. When we later implement specific
6405 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6406 * header which contains information about that protocol for
6407 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6408 */
6409 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
6410 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6411 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
6412 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6413 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6414 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6415 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6416
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6417 /* this situation happens when combining pretend-keepalive with httpclose. */
6418 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6419 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6420 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6421 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
6422
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6423 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6424 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6425 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
6426 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6427
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6428 /* now adjust header transformations depending on current state */
6429 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
6430 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
6431 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6432 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6433 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6434 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6435 else { /* SCL / KAL */
6436 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6437 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6438 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6439 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6440
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6441 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6442 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6443
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6444 /* Some keep-alive responses are converted to Server-close if
6445 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6446 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6447 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
6448 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6449 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6450 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6451 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6452 }
6453
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6454 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6455 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6456
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6457 /* end of job, return OK */
6458 rep->analysers &= ~an_bit;
6459 rep->analyse_exp = TICK_ETERNITY;
6460 channel_auto_close(rep);
6461 return 1;
6462
6463 abort_keep_alive:
6464 /* A keep-alive request to the server failed on a network error.
6465 * The client is required to retry. We need to close without returning
6466 * any other information so that the client retries.
6467 */
6468 txn->status = 0;
6469 rep->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6470 s->req.analysers = 0;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6471 channel_auto_close(rep);
6472 s->logs.logwait = 0;
6473 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6474 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6475 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6476 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6477 return 0;
6478}
6479
6480/* This function performs all the processing enabled for the current response.
6481 * It normally returns 1 unless it wants to break. It relies on buffers flags,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6482 * and updates s->res.analysers. It might make sense to explode it into several
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6483 * other functions. It works like process_request (see indications above).
6484 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6485int 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]6486{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6487 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6488 struct http_txn *txn = s->txn;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6489 struct http_msg *msg = &txn->rsp;
6490 struct proxy *cur_proxy;
6491 struct cond_wordlist *wl;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]6492 enum rule_result ret = HTTP_RULE_RES_CONT;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6493
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6494 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]6495 now_ms, __FUNCTION__,
6496 s,
6497 rep,
6498 rep->rex, rep->wex,
6499 rep->flags,
6500 rep->buf->i,
6501 rep->analysers);
6502
6503 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
6504 return 0;
6505
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6506 /* The stats applet needs to adjust the Connection header but we don't
6507 * apply any filter there.
6508 */
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6509 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
6510 rep->analysers &= ~an_bit;
6511 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6512 goto skip_filters;
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6513 }
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6514
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6515 /*
6516 * We will have to evaluate the filters.
6517 * As opposed to version 1.2, now they will be evaluated in the
6518 * filters order and not in the header order. This means that
6519 * each filter has to be validated among all headers.
6520 *
6521 * Filters are tried with ->be first, then with ->fe if it is
6522 * different from ->be.
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6523 *
6524 * Maybe we are in resume condiion. In this case I choose the
6525 * "struct proxy" which contains the rule list matching the resume
6526 * pointer. If none of theses "struct proxy" match, I initialise
6527 * the process with the first one.
6528 *
6529 * In fact, I check only correspondance betwwen the current list
6530 * pointer and the ->fe rule list. If it doesn't match, I initialize
6531 * the loop with the ->be.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6532 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6533 if (s->current_rule_list == &sess->fe->http_res_rules)
6534 cur_proxy = sess->fe;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6535 else
6536 cur_proxy = s->be;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6537 while (1) {
6538 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6539
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6540 /* evaluate http-response rules */
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6541 if (ret == HTTP_RULE_RES_CONT) {
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]6542 ret = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, s);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]6543
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6544 if (ret == HTTP_RULE_RES_BADREQ)
6545 goto return_srv_prx_502;
6546
6547 if (ret == HTTP_RULE_RES_DONE) {
6548 rep->analysers &= ~an_bit;
6549 rep->analyse_exp = TICK_ETERNITY;
6550 return 1;
6551 }
6552 }
6553
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6554 /* we need to be called again. */
6555 if (ret == HTTP_RULE_RES_YIELD) {
6556 channel_dont_close(rep);
6557 return 0;
6558 }
6559
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6560 /* try headers filters */
6561 if (rule_set->rsp_exp != NULL) {
6562 if (apply_filters_to_response(s, rep, rule_set) < 0) {
6563 return_bad_resp:
6564 if (objt_server(s->target)) {
6565 objt_server(s->target)->counters.failed_resp++;
6566 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6567 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6568 s->be->be_counters.failed_resp++;
6569 return_srv_prx_502:
6570 rep->analysers = 0;
6571 txn->status = 502;
6572 s->logs.t_data = -1; /* was not a valid response */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6573 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6574 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6575 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6576 if (!(s->flags & SF_ERR_MASK))
6577 s->flags |= SF_ERR_PRXCOND;
6578 if (!(s->flags & SF_FINST_MASK))
6579 s->flags |= SF_FINST_H;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6580 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6581 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6582 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6583
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6584 /* has the response been denied ? */
6585 if (txn->flags & TX_SVDENY) {
6586 if (objt_server(s->target))
6587 objt_server(s->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6588
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6589 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6590 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6591 if (sess->listener->counters)
6592 sess->listener->counters->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6593
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6594 goto return_srv_prx_502;
6595 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]6596
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6597 /* add response headers from the rule sets in the same order */
6598 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6599 if (txn->status < 200 && txn->status != 101)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6600 break;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6601 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]6602 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]6603 ret = acl_pass(ret);
6604 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
6605 ret = !ret;
6606 if (!ret)
6607 continue;
6608 }
6609 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
6610 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6611 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6612
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6613 /* check whether we're already working on the frontend */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6614 if (cur_proxy == sess->fe)
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6615 break;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6616 cur_proxy = sess->fe;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6617 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6618
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6619 /* After this point, this anayzer can't return yield, so we can
6620 * remove the bit corresponding to this analyzer from the list.
6621 *
6622 * Note that the intermediate returns and goto found previously
6623 * reset the analyzers.
6624 */
6625 rep->analysers &= ~an_bit;
6626 rep->analyse_exp = TICK_ETERNITY;
6627
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6628 /* OK that's all we can do for 1xx responses */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6629 if (unlikely(txn->status < 200 && txn->status != 101))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6630 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6631
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6632 /*
6633 * Now check for a server cookie.
6634 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6635 if (s->be->cookie_name || s->be->appsession_name || sess->fe->capture_name ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6636 (s->be->options & PR_O_CHK_CACHE))
6637 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6638
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6639 /*
6640 * Check for cache-control or pragma headers if required.
6641 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6642 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]6643 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6644
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6645 /*
6646 * Add server cookie in the response if needed
6647 */
6648 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
6649 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6650 (!(s->flags & SF_DIRECT) ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6651 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
6652 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
6653 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
6654 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
6655 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6656 !(s->flags & SF_IGNORE_PRST)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6657 /* the server is known, it's not the one the client requested, or the
6658 * cookie's last seen date needs to be refreshed. We have to
6659 * insert a set-cookie here, except if we want to insert only on POST
6660 * requests and this one isn't. Note that servers which don't have cookies
6661 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6662 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6663 if (!objt_server(s->target)->cookie) {
6664 chunk_printf(&trash,
6665 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
6666 s->be->cookie_name);
6667 }
6668 else {
6669 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]6670
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6671 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
6672 /* emit last_date, which is mandatory */
6673 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6674 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6675 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6676
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6677 if (s->be->cookie_maxlife) {
6678 /* emit first_date, which is either the original one or
6679 * the current date.
6680 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6681 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6682 s30tob64(txn->cookie_first_date ?
6683 txn->cookie_first_date >> 2 :
6684 (date.tv_sec+3) >> 2, trash.str + trash.len);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6685 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6686 }
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6687 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6688 chunk_appendf(&trash, "; path=/");
6689 }
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6690
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6691 if (s->be->cookie_domain)
6692 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6693
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6694 if (s->be->ck_opts & PR_CK_HTTPONLY)
6695 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6696
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6697 if (s->be->ck_opts & PR_CK_SECURE)
6698 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6699
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6700 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
6701 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6702
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6703 txn->flags &= ~TX_SCK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6704 if (objt_server(s->target)->cookie && (s->flags & SF_DIRECT))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6705 /* the server did not change, only the date was updated */
6706 txn->flags |= TX_SCK_UPDATED;
6707 else
6708 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6709
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6710 /* Here, we will tell an eventual cache on the client side that we don't
6711 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6712 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6713 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6714 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6715 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6716
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6717 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6718
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6719 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
6720 "Cache-control: private", 22) < 0))
6721 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6722 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6723 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6724
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6725 /*
6726 * Check if result will be cacheable with a cookie.
6727 * We'll block the response if security checks have caught
6728 * nasty things such as a cacheable cookie.
6729 */
6730 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6731 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
6732 (s->be->options & PR_O_CHK_CACHE)) {
6733 /* we're in presence of a cacheable response containing
6734 * a set-cookie header. We'll block it as requested by
6735 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6736 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6737 if (objt_server(s->target))
6738 objt_server(s->target)->counters.failed_secu++;
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6739
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6740 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6741 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6742 if (sess->listener->counters)
6743 sess->listener->counters->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6744
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6745 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
6746 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6747 send_log(s->be, LOG_ALERT,
6748 "Blocking cacheable cookie in response from instance %s, server %s.\n",
6749 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6750 goto return_srv_prx_502;
6751 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6752
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6753 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6754 /*
6755 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
6756 * If an "Upgrade" token is found, the header is left untouched in order
6757 * 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]6758 * if anything but "Upgrade" is present in the Connection header. We don't
6759 * want to touch any 101 response either since it's switching to another
6760 * protocol.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6761 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6762 if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) &&
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6763 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6764 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6765 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
6766 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6767
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6768 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6769 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6770 /* we want a keep-alive response here. Keep-alive header
6771 * required if either side is not 1.1.
6772 */
6773 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
6774 want_flags |= TX_CON_KAL_SET;
6775 }
6776 else {
6777 /* we want a close response here. Close header required if
6778 * the server is 1.1, regardless of the client.
6779 */
6780 if (msg->flags & HTTP_MSGF_VER_11)
6781 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6782 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6783
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6784 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
6785 http_change_connection_header(txn, msg, want_flags);
6786 }
6787
6788 skip_header_mangling:
6789 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
6790 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
6791 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6792
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6793 /* if the user wants to log as soon as possible, without counting
6794 * bytes from the server, then this is the right moment. We have
6795 * to temporarily assign bytes_out to log what we currently have.
6796 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6797 if (!LIST_ISEMPTY(&sess->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6798 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
6799 s->logs.bytes_out = txn->rsp.eoh;
6800 s->do_log(s);
6801 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6802 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6803 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6804}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6805
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6806/* This function is an analyser which forwards response body (including chunk
6807 * sizes if any). It is called as soon as we must forward, even if we forward
6808 * zero byte. The only situation where it must not be called is when we're in
6809 * tunnel mode and we want to forward till the close. It's used both to forward
6810 * remaining data and to resync after end of body. It expects the msg_state to
6811 * 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]6812 * 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]6813 *
6814 * It is capable of compressing response data both in content-length mode and
6815 * in chunked mode. The state machines follows different flows depending on
6816 * whether content-length and chunked modes are used, since there are no
6817 * trailers in content-length :
6818 *
6819 * chk-mode cl-mode
6820 * ,----- BODY -----.
6821 * / \
6822 * V size > 0 V chk-mode
6823 * .--> SIZE -------------> DATA -------------> CRLF
6824 * | | size == 0 | last byte |
6825 * | v final crlf v inspected |
6826 * | TRAILERS -----------> DONE |
6827 * | |
6828 * `----------------------------------------------'
6829 *
6830 * Compression only happens in the DATA state, and must be flushed in final
6831 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
6832 * is performed at once on final states for all bytes parsed, or when leaving
6833 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6834 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6835int http_response_forward_body(struct stream *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6836{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6837 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6838 struct http_txn *txn = s->txn;
6839 struct http_msg *msg = &s->txn->rsp;
Willy Tarreauf2f7d6b2014-11-24 11:55:08 +0100[diff] [blame]6840 static struct buffer *tmpbuf = &buf_empty;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6841 int compressing = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6842 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6843
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6844 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6845 return 0;
6846
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6847 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]6848 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6849 !s->req.analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6850 /* Output closed while we were sending data. We must abort and
6851 * wake the other side up.
6852 */
6853 msg->msg_state = HTTP_MSG_ERROR;
6854 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6855 return 1;
6856 }
6857
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6858 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6859 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6860
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]6861 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6862 /* we have msg->sov which points to the first byte of message
6863 * body, and res->buf.p still points to the beginning of the
6864 * message. We forward the headers now, as we don't need them
6865 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6866 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6867 b_adv(res->buf, msg->sov);
6868 msg->next -= msg->sov;
6869 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6870
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6871 /* The previous analysers guarantee that the state is somewhere
6872 * between MSG_BODY and the first MSG_DATA. So msg->sol and
6873 * msg->next are always correct.
6874 */
6875 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
6876 if (msg->flags & HTTP_MSGF_TE_CHNK)
6877 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
6878 else
6879 msg->msg_state = HTTP_MSG_DATA;
6880 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6881 }
6882
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6883 if (res->to_forward) {
6884 /* We can't process the buffer's contents yet */
6885 res->flags |= CF_WAKE_WRITE;
6886 goto missing_data;
6887 }
6888
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6889 if (unlikely(s->comp_algo != NULL) && msg->msg_state < HTTP_MSG_TRAILERS) {
6890 /* We need a compression buffer in the DATA state to put the
6891 * output of compressed data, and in CRLF state to let the
6892 * TRAILERS state finish the job of removing the trailing CRLF.
6893 */
Willy Tarreauf2f7d6b2014-11-24 11:55:08 +0100[diff] [blame]6894 if (unlikely(!tmpbuf->size)) {
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6895 /* this is the first time we need the compression buffer */
Willy Tarreaue583ea52014-11-24 11:30:16 +0100[diff] [blame]6896 if (b_alloc(&tmpbuf) == NULL)
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6897 goto aborted_xfer; /* no memory */
6898 }
6899
6900 ret = http_compression_buffer_init(s, res->buf, tmpbuf);
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6901 if (ret < 0) {
6902 res->flags |= CF_WAKE_WRITE;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6903 goto missing_data; /* not enough spaces in buffers */
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6904 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6905 compressing = 1;
6906 }
6907
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6908 while (1) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6909 switch (msg->msg_state - HTTP_MSG_DATA) {
6910 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6911 /* we may have some pending data starting at res->buf->p */
6912 if (unlikely(s->comp_algo)) {
Willy Tarreau7f2f8d52014-04-18 00:20:14 +0200[diff] [blame]6913 ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6914 if (ret < 0)
6915 goto aborted_xfer;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6916
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6917 if (msg->chunk_len) {
6918 /* input empty or output full */
6919 if (res->buf->i > msg->next)
6920 res->flags |= CF_WAKE_WRITE;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6921 goto missing_data;
6922 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6923 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6924 else {
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6925 if (msg->chunk_len > res->buf->i - msg->next) {
6926 /* output full */
6927 res->flags |= CF_WAKE_WRITE;
6928 goto missing_data;
6929 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6930 msg->next += msg->chunk_len;
6931 msg->chunk_len = 0;
6932 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6933
6934 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6935 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6936 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6937 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6938 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6939 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6940 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6941 /* fall through for HTTP_MSG_CHUNK_CRLF */
6942
6943 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
6944 /* we want the CRLF after the data */
6945
6946 ret = http_skip_chunk_crlf(msg);
6947 if (ret == 0)
6948 goto missing_data;
6949 else if (ret < 0) {
6950 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6951 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]6952 goto return_bad_res;
6953 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6954 /* we're in MSG_CHUNK_SIZE now, fall through */
6955
6956 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6957 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]6958 * set ->next to point to the body and switch to DATA or
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6959 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6960 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6961
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6962 ret = http_parse_chunk_size(msg);
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6963 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6964 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6965 else if (ret < 0) {
6966 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6967 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]6968 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6969 }
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]6970 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6971 break;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6972
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6973 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6974 if (unlikely(compressing)) {
6975 /* we need to flush output contents before syncing FSMs */
6976 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6977 compressing = 0;
6978 }
6979
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6980 ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6981 if (ret == 0)
6982 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6983 else if (ret < 0) {
6984 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6985 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]6986 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6987 }
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6988 /* we're in HTTP_MSG_DONE now, fall through */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6989
6990 default:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6991 /* other states, DONE...TUNNEL */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6992 if (unlikely(compressing)) {
6993 /* we need to flush output contents before syncing FSMs */
6994 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6995 compressing = 0;
6996 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6997
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6998 /* we may have some pending data starting at res->buf->p
6999 * such as a last chunk of data or trailers.
7000 */
7001 b_adv(res->buf, msg->next);
7002 msg->next = 0;
7003
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]7004 ret = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]7005 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7006 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
7007 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]7008 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]7009
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]7010 if (http_resync_states(s)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]7011 /* some state changes occurred, maybe the analyser
7012 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]7013 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]7014 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7015 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]7016 /* response errors are most likely due to
7017 * the client aborting the transfer.
7018 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7019 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]7020 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]7021 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7022 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, sess->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]7023 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]7024 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]7025 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]7026 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]7027 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7028 }
7029 }
7030
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7031 missing_data:
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]7032 /* we may have some pending data starting at res->buf->p */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]7033 if (unlikely(compressing)) {
7034 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]7035 compressing = 0;
7036 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]7037
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]7038 if ((s->comp_algo == NULL || msg->msg_state >= HTTP_MSG_TRAILERS)) {
7039 b_adv(res->buf, msg->next);
7040 msg->next = 0;
7041 msg->chunk_len -= channel_forward(res, msg->chunk_len);
7042 }
7043
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]7044 if (res->flags & CF_SHUTW)
7045 goto aborted_xfer;
7046
7047 /* stop waiting for data if the input is closed before the end. If the
7048 * client side was already closed, it means that the client has aborted,
7049 * so we don't want to count this as a server abort. Otherwise it's a
7050 * server abort.
7051 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7052 if (res->flags & CF_SHUTR) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7053 if ((s->req.flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]7054 goto aborted_xfer;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7055 if (!(s->flags & SF_ERR_MASK))
7056 s->flags |= SF_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]7057 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7058 if (objt_server(s->target))
7059 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7060 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]7061 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]7062
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]7063 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7064 if (!s->req.analysers)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]7065 goto return_bad_res;
7066
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7067 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7068 * 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]7069 * Similarly, with keep-alive on the client side, we don't want to forward a
7070 * close.
7071 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]7072 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7073 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
7074 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]7075 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7076
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7077 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7078 * 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]7079 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]7080 * modes are already handled by the stream sock layer. We must not do
7081 * this in content-length mode because it could present the MSG_MORE
7082 * flag with the last block of forwarded data, which would cause an
7083 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7084 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]7085 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7086 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7087
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7088 /* the stream handler will take care of timeouts and errors */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7089 return 0;
7090
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]7091 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]7092 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7093 if (objt_server(s->target))
7094 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7095
7096 return_bad_res_stats_ok:
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]7097 if (unlikely(compressing)) {
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]7098 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]7099 compressing = 0;
7100 }
7101
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]7102 /* we may have some pending data starting at res->buf->p */
7103 if (s->comp_algo == NULL) {
7104 b_adv(res->buf, msg->next);
7105 msg->next = 0;
7106 }
7107
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7108 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]7109 /* don't send any error message as we're in the body */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]7110 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7111 res->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7112 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]7113 if (objt_server(s->target))
7114 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7115
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7116 if (!(s->flags & SF_ERR_MASK))
7117 s->flags |= SF_ERR_PRXCOND;
7118 if (!(s->flags & SF_FINST_MASK))
7119 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7120 return 0;
7121
7122 aborted_xfer:
Willy Tarreau6fef8ae2014-04-22 21:22:06 +0200[diff] [blame]7123 if (unlikely(compressing)) {
7124 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
7125 compressing = 0;
7126 }
7127
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7128 txn->rsp.msg_state = HTTP_MSG_ERROR;
7129 /* don't send any error message as we're in the body */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]7130 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7131 res->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7132 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]7133
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7134 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]7135 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7136 if (objt_server(s->target))
7137 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7138
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7139 if (!(s->flags & SF_ERR_MASK))
7140 s->flags |= SF_ERR_CLICL;
7141 if (!(s->flags & SF_FINST_MASK))
7142 s->flags |= SF_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7143 return 0;
7144}
7145
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7146/* Iterate the same filter through all request headers.
7147 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7148 * Since it can manage the switch to another backend, it updates the per-proxy
7149 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7150 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7151int 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]7152{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7153 char *cur_ptr, *cur_end, *cur_next;
7154 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7155 struct http_txn *txn = s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7156 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7157 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]7158
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7159 last_hdr = 0;
7160
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7161 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7162 old_idx = 0;
7163
7164 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7165 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7166 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7167 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7168 (exp->action == ACT_ALLOW ||
7169 exp->action == ACT_DENY ||
7170 exp->action == ACT_TARPIT))
7171 return 0;
7172
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7173 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7174 if (!cur_idx)
7175 break;
7176
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7177 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7178 cur_ptr = cur_next;
7179 cur_end = cur_ptr + cur_hdr->len;
7180 cur_next = cur_end + cur_hdr->cr + 1;
7181
7182 /* Now we have one header between cur_ptr and cur_end,
7183 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7184 */
7185
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7186 if (regex_exec_match2(exp->preg, cur_ptr, cur_end-cur_ptr, MAX_MATCH, pmatch, 0)) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7187 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7188 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7189 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7190 last_hdr = 1;
7191 break;
7192
7193 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7194 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7195 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7196 break;
7197
7198 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7199 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7200 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7201 break;
7202
7203 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7204 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7205 if (trash.len < 0)
7206 return -1;
7207
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7208 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7209 /* FIXME: if the user adds a newline in the replacement, the
7210 * index will not be recalculated for now, and the new line
7211 * will not be counted as a new header.
7212 */
7213
7214 cur_end += delta;
7215 cur_next += delta;
7216 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7217 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7218 break;
7219
7220 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7221 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7222 cur_next += delta;
7223
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7224 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7225 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7226 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7227 cur_hdr->len = 0;
7228 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7229 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7230 break;
7231
7232 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7233 }
7234
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7235 /* keep the link from this header to next one in case of later
7236 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7237 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7238 old_idx = cur_idx;
7239 }
7240 return 0;
7241}
7242
7243
7244/* Apply the filter to the request line.
7245 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7246 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7247 * Since it can manage the switch to another backend, it updates the per-proxy
7248 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7249 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7250int 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]7251{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7252 char *cur_ptr, *cur_end;
7253 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7254 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7255 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7256
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7257 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7258 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7259 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7260 (exp->action == ACT_ALLOW ||
7261 exp->action == ACT_DENY ||
7262 exp->action == ACT_TARPIT))
7263 return 0;
7264 else if (exp->action == ACT_REMOVE)
7265 return 0;
7266
7267 done = 0;
7268
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7269 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7270 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7271
7272 /* Now we have the request line between cur_ptr and cur_end */
7273
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7274 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]7275 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7276 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7277 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7278 done = 1;
7279 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7280
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7281 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7282 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7283 done = 1;
7284 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7285
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7286 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7287 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7288 done = 1;
7289 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7290
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7291 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7292 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7293 if (trash.len < 0)
7294 return -1;
7295
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7296 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7297 /* FIXME: if the user adds a newline in the replacement, the
7298 * index will not be recalculated for now, and the new line
7299 * will not be counted as a new header.
7300 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7301
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7302 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7303 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7304 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7305 HTTP_MSG_RQMETH,
7306 cur_ptr, cur_end + 1,
7307 NULL, NULL);
7308 if (unlikely(!cur_end))
7309 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7310
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7311 /* we have a full request and we know that we have either a CR
7312 * or an LF at <ptr>.
7313 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7314 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
7315 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]7316 /* there is no point trying this regex on headers */
7317 return 1;
7318 }
7319 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7320 return done;
7321}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]7322
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7323
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7324
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7325/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7326 * 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]7327 * 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]7328 * unparsable request. Since it can manage the switch to another backend, it
7329 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7330 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7331int apply_filters_to_request(struct stream *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7332{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7333 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7334 struct http_txn *txn = s->txn;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7335 struct hdr_exp *exp;
7336
7337 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7338 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7339
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7340 /*
7341 * The interleaving of transformations and verdicts
7342 * makes it difficult to decide to continue or stop
7343 * the evaluation.
7344 */
7345
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7346 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
7347 break;
7348
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7349 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7350 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7351 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7352 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7353
7354 /* if this filter had a condition, evaluate it now and skip to
7355 * next filter if the condition does not match.
7356 */
7357 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7358 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]7359 ret = acl_pass(ret);
7360 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7361 ret = !ret;
7362
7363 if (!ret)
7364 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7365 }
7366
7367 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7368 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7369 if (unlikely(ret < 0))
7370 return -1;
7371
7372 if (likely(ret == 0)) {
7373 /* The filter did not match the request, it can be
7374 * iterated through all headers.
7375 */
Willy Tarreau34d4c3c2015-01-30 20:58:58 +0100[diff] [blame]7376 if (unlikely(apply_filter_to_req_headers(s, req, exp) < 0))
7377 return -1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7378 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7379 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7380 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7381}
7382
7383
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7384
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7385/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7386 * Try to retrieve the server associated to the appsession.
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7387 * If the server is found, it's assigned to the stream.
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7388 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7389void manage_client_side_appsession(struct stream *s, const char *buf, int len) {
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7390 struct http_txn *txn = s->txn;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7391 appsess *asession = NULL;
7392 char *sessid_temp = NULL;
7393
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7394 if (len > s->be->appsession_len) {
7395 len = s->be->appsession_len;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7396 }
7397
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7398 if (s->be->options2 & PR_O2_AS_REQL) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7399 /* request-learn option is enabled : store the sessid in the stream for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7400 if (txn->sessid != NULL) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7401 /* 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]7402 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7403 }
7404
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7405 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7406 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7407 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]7408 return;
7409 }
7410
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7411 memcpy(txn->sessid, buf, len);
7412 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7413 }
7414
7415 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
7416 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7417 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]7418 return;
7419 }
7420
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7421 memcpy(sessid_temp, buf, len);
7422 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7423
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7424 asession = appsession_hash_lookup(&(s->be->htbl_proxy), sessid_temp);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7425 /* free previously allocated memory */
7426 pool_free2(apools.sessid, sessid_temp);
7427
7428 if (asession != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7429 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
7430 if (!(s->be->options2 & PR_O2_AS_REQL))
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7431 asession->request_count++;
7432
7433 if (asession->serverid != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7434 struct server *srv = s->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7435
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7436 while (srv) {
7437 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7438 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7439 (s->be->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7440 (s->flags & SF_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7441 /* we found the server and it's usable */
7442 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7443 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7444 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7445 s->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]7446
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7447 break;
7448 } else {
7449 txn->flags &= ~TX_CK_MASK;
7450 txn->flags |= TX_CK_DOWN;
7451 }
7452 }
7453 srv = srv->next;
7454 }
7455 }
7456 }
7457}
7458
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7459/* Find the end of a cookie value contained between <s> and <e>. It works the
7460 * same way as with headers above except that the semi-colon also ends a token.
7461 * See RFC2965 for more information. Note that it requires a valid header to
7462 * return a valid result.
7463 */
7464char *find_cookie_value_end(char *s, const char *e)
7465{
7466 int quoted, qdpair;
7467
7468 quoted = qdpair = 0;
7469 for (; s < e; s++) {
7470 if (qdpair) qdpair = 0;
7471 else if (quoted) {
7472 if (*s == '\\') qdpair = 1;
7473 else if (*s == '"') quoted = 0;
7474 }
7475 else if (*s == '"') quoted = 1;
7476 else if (*s == ',' || *s == ';') return s;
7477 }
7478 return s;
7479}
7480
7481/* Delete a value in a header between delimiters <from> and <next> in buffer
7482 * <buf>. The number of characters displaced is returned, and the pointer to
7483 * the first delimiter is updated if required. The function tries as much as
7484 * possible to respect the following principles :
7485 * - replace <from> delimiter by the <next> one unless <from> points to a
7486 * colon, in which case <next> is simply removed
7487 * - set exactly one space character after the new first delimiter, unless
7488 * there are not enough characters in the block being moved to do so.
7489 * - remove unneeded spaces before the previous delimiter and after the new
7490 * one.
7491 *
7492 * It is the caller's responsibility to ensure that :
7493 * - <from> points to a valid delimiter or the colon ;
7494 * - <next> points to a valid delimiter or the final CR/LF ;
7495 * - there are non-space chars before <from> ;
7496 * - there is a CR/LF at or after <next>.
7497 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]7498int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7499{
7500 char *prev = *from;
7501
7502 if (*prev == ':') {
7503 /* We're removing the first value, preserve the colon and add a
7504 * space if possible.
7505 */
7506 if (!http_is_crlf[(unsigned char)*next])
7507 next++;
7508 prev++;
7509 if (prev < next)
7510 *prev++ = ' ';
7511
7512 while (http_is_spht[(unsigned char)*next])
7513 next++;
7514 } else {
7515 /* Remove useless spaces before the old delimiter. */
7516 while (http_is_spht[(unsigned char)*(prev-1)])
7517 prev--;
7518 *from = prev;
7519
7520 /* copy the delimiter and if possible a space if we're
7521 * not at the end of the line.
7522 */
7523 if (!http_is_crlf[(unsigned char)*next]) {
7524 *prev++ = *next++;
7525 if (prev + 1 < next)
7526 *prev++ = ' ';
7527 while (http_is_spht[(unsigned char)*next])
7528 next++;
7529 }
7530 }
7531 return buffer_replace2(buf, prev, next, NULL, 0);
7532}
7533
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7534/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7535 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7536 * desirable to call it only when needed. This code is quite complex because
7537 * of the multiple very crappy and ambiguous syntaxes we have to support. it
7538 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7539 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7540void manage_client_side_cookies(struct stream *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7541{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7542 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7543 struct session *sess = s->sess;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7544 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7545 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7546 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
7547 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7548
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7549 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]7550 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7551 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7552
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7553 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7554 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7555 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7556
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7557 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7558 hdr_beg = hdr_next;
7559 hdr_end = hdr_beg + cur_hdr->len;
7560 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7561
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7562 /* We have one full header between hdr_beg and hdr_end, and the
7563 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7564 * "Cookie:" headers.
7565 */
7566
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7567 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7568 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7569 old_idx = cur_idx;
7570 continue;
7571 }
7572
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7573 del_from = NULL; /* nothing to be deleted */
7574 preserve_hdr = 0; /* assume we may kill the whole header */
7575
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7576 /* Now look for cookies. Conforming to RFC2109, we have to support
7577 * attributes whose name begin with a '$', and associate them with
7578 * the right cookie, if we want to delete this cookie.
7579 * So there are 3 cases for each cookie read :
7580 * 1) it's a special attribute, beginning with a '$' : ignore it.
7581 * 2) it's a server id cookie that we *MAY* want to delete : save
7582 * some pointers on it (last semi-colon, beginning of cookie...)
7583 * 3) it's an application cookie : we *MAY* have to delete a previous
7584 * "special" cookie.
7585 * At the end of loop, if a "special" cookie remains, we may have to
7586 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7587 * *MUST* delete it.
7588 *
7589 * Note: RFC2965 is unclear about the processing of spaces around
7590 * the equal sign in the ATTR=VALUE form. A careful inspection of
7591 * the RFC explicitly allows spaces before it, and not within the
7592 * tokens (attrs or values). An inspection of RFC2109 allows that
7593 * too but section 10.1.3 lets one think that spaces may be allowed
7594 * after the equal sign too, resulting in some (rare) buggy
7595 * implementations trying to do that. So let's do what servers do.
7596 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
7597 * allowed quoted strings in values, with any possible character
7598 * after a backslash, including control chars and delimitors, which
7599 * causes parsing to become ambiguous. Browsers also allow spaces
7600 * within values even without quotes.
7601 *
7602 * We have to keep multiple pointers in order to support cookie
7603 * removal at the beginning, middle or end of header without
7604 * corrupting the header. All of these headers are valid :
7605 *
7606 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
7607 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
7608 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
7609 * | | | | | | | | |
7610 * | | | | | | | | hdr_end <--+
7611 * | | | | | | | +--> next
7612 * | | | | | | +----> val_end
7613 * | | | | | +-----------> val_beg
7614 * | | | | +--------------> equal
7615 * | | | +----------------> att_end
7616 * | | +---------------------> att_beg
7617 * | +--------------------------> prev
7618 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7619 */
7620
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7621 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
7622 /* Iterate through all cookies on this line */
7623
7624 /* find att_beg */
7625 att_beg = prev + 1;
7626 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7627 att_beg++;
7628
7629 /* find att_end : this is the first character after the last non
7630 * space before the equal. It may be equal to hdr_end.
7631 */
7632 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7633
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7634 while (equal < hdr_end) {
7635 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7636 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7637 if (http_is_spht[(unsigned char)*equal++])
7638 continue;
7639 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7640 }
7641
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7642 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7643 * is between <att_beg> and <equal>, both may be identical.
7644 */
7645
7646 /* look for end of cookie if there is an equal sign */
7647 if (equal < hdr_end && *equal == '=') {
7648 /* look for the beginning of the value */
7649 val_beg = equal + 1;
7650 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7651 val_beg++;
7652
7653 /* find the end of the value, respecting quotes */
7654 next = find_cookie_value_end(val_beg, hdr_end);
7655
7656 /* make val_end point to the first white space or delimitor after the value */
7657 val_end = next;
7658 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7659 val_end--;
7660 } else {
7661 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7662 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7663
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7664 /* We have nothing to do with attributes beginning with '$'. However,
7665 * they will automatically be removed if a header before them is removed,
7666 * since they're supposed to be linked together.
7667 */
7668 if (*att_beg == '$')
7669 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7670
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7671 /* Ignore cookies with no equal sign */
7672 if (equal == next) {
7673 /* This is not our cookie, so we must preserve it. But if we already
7674 * scheduled another cookie for removal, we cannot remove the
7675 * complete header, but we can remove the previous block itself.
7676 */
7677 preserve_hdr = 1;
7678 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7679 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7680 val_end += delta;
7681 next += delta;
7682 hdr_end += delta;
7683 hdr_next += delta;
7684 cur_hdr->len += delta;
7685 http_msg_move_end(&txn->req, delta);
7686 prev = del_from;
7687 del_from = NULL;
7688 }
7689 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7690 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7691
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7692 /* if there are spaces around the equal sign, we need to
7693 * strip them otherwise we'll get trouble for cookie captures,
7694 * or even for rewrites. Since this happens extremely rarely,
7695 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7696 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7697 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7698 int stripped_before = 0;
7699 int stripped_after = 0;
7700
7701 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7702 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7703 equal += stripped_before;
7704 val_beg += stripped_before;
7705 }
7706
7707 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7708 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7709 val_beg += stripped_after;
7710 stripped_before += stripped_after;
7711 }
7712
7713 val_end += stripped_before;
7714 next += stripped_before;
7715 hdr_end += stripped_before;
7716 hdr_next += stripped_before;
7717 cur_hdr->len += stripped_before;
7718 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7719 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7720 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7721
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7722 /* First, let's see if we want to capture this cookie. We check
7723 * that we don't already have a client side cookie, because we
7724 * can only capture one. Also as an optimisation, we ignore
7725 * cookies shorter than the declared name.
7726 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7727 if (sess->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7728 (val_end - att_beg >= sess->fe->capture_namelen) &&
7729 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7730 int log_len = val_end - att_beg;
7731
7732 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7733 Alert("HTTP logging : out of memory.\n");
7734 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7735 if (log_len > sess->fe->capture_len)
7736 log_len = sess->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7737 memcpy(txn->cli_cookie, att_beg, log_len);
7738 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7739 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7740 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7741
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7742 /* Persistence cookies in passive, rewrite or insert mode have the
7743 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7744 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7745 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7746 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7747 * For cookies in prefix mode, the form is :
7748 *
7749 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7750 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7751 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
7752 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
7753 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7754 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7755
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7756 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7757 * have the server ID between val_beg and delim, and the original cookie between
7758 * delim+1 and val_end. Otherwise, delim==val_end :
7759 *
7760 * Cookie: NAME=SRV; # in all but prefix modes
7761 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7762 * | || || | |+-> next
7763 * | || || | +--> val_end
7764 * | || || +---------> delim
7765 * | || |+------------> val_beg
7766 * | || +-------------> att_end = equal
7767 * | |+-----------------> att_beg
7768 * | +------------------> prev
7769 * +-------------------------> hdr_beg
7770 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7771
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7772 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7773 for (delim = val_beg; delim < val_end; delim++)
7774 if (*delim == COOKIE_DELIM)
7775 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7776 } else {
7777 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7778 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7779 /* Now check if the cookie contains a date field, which would
7780 * appear after a vertical bar ('|') just after the server name
7781 * and before the delimiter.
7782 */
7783 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7784 if (vbar1) {
7785 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7786 * right is the last seen date. It is a base64 encoded
7787 * 30-bit value representing the UNIX date since the
7788 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7789 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7790 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7791 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7792 if (val_end - vbar1 >= 5) {
7793 val = b64tos30(vbar1);
7794 if (val > 0)
7795 txn->cookie_last_date = val << 2;
7796 }
7797 /* look for a second vertical bar */
7798 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7799 if (vbar1 && (val_end - vbar1 > 5)) {
7800 val = b64tos30(vbar1 + 1);
7801 if (val > 0)
7802 txn->cookie_first_date = val << 2;
7803 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7804 }
7805 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7806
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7807 /* if the cookie has an expiration date and the proxy wants to check
7808 * it, then we do that now. We first check if the cookie is too old,
7809 * then only if it has expired. We detect strict overflow because the
7810 * time resolution here is not great (4 seconds). Cookies with dates
7811 * in the future are ignored if their offset is beyond one day. This
7812 * allows an admin to fix timezone issues without expiring everyone
7813 * and at the same time avoids keeping unwanted side effects for too
7814 * long.
7815 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7816 if (txn->cookie_first_date && s->be->cookie_maxlife &&
7817 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7818 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7819 txn->flags &= ~TX_CK_MASK;
7820 txn->flags |= TX_CK_OLD;
7821 delim = val_beg; // let's pretend we have not found the cookie
7822 txn->cookie_first_date = 0;
7823 txn->cookie_last_date = 0;
7824 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7825 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
7826 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7827 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7828 txn->flags &= ~TX_CK_MASK;
7829 txn->flags |= TX_CK_EXPIRED;
7830 delim = val_beg; // let's pretend we have not found the cookie
7831 txn->cookie_first_date = 0;
7832 txn->cookie_last_date = 0;
7833 }
7834
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7835 /* Here, we'll look for the first running server which supports the cookie.
7836 * This allows to share a same cookie between several servers, for example
7837 * to dedicate backup servers to specific servers only.
7838 * However, to prevent clients from sticking to cookie-less backup server
7839 * when they have incidentely learned an empty cookie, we simply ignore
7840 * empty cookies and mark them as invalid.
7841 * The same behaviour is applied when persistence must be ignored.
7842 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7843 if ((delim == val_beg) || (s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7844 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7845
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7846 while (srv) {
7847 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7848 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7849 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7850 (s->be->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7851 (s->flags & SF_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7852 /* we found the server and we can use it */
7853 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7854 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7855 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7856 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7857 break;
7858 } else {
7859 /* we found a server, but it's down,
7860 * mark it as such and go on in case
7861 * another one is available.
7862 */
7863 txn->flags &= ~TX_CK_MASK;
7864 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7865 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7866 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7867 srv = srv->next;
7868 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7869
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7870 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7871 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7872 txn->flags &= ~TX_CK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7873 if ((s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7874 txn->flags |= TX_CK_UNUSED;
7875 else
7876 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7877 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7878
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7879 /* depending on the cookie mode, we may have to either :
7880 * - delete the complete cookie if we're in insert+indirect mode, so that
7881 * the server never sees it ;
7882 * - remove the server id from the cookie value, and tag the cookie as an
7883 * application cookie so that it does not get accidentely removed later,
7884 * if we're in cookie prefix mode
7885 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7886 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7887 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7888
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7889 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7890 val_end += delta;
7891 next += delta;
7892 hdr_end += delta;
7893 hdr_next += delta;
7894 cur_hdr->len += delta;
7895 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7896
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7897 del_from = NULL;
7898 preserve_hdr = 1; /* we want to keep this cookie */
7899 }
7900 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7901 (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]7902 del_from = prev;
7903 }
7904 } else {
7905 /* This is not our cookie, so we must preserve it. But if we already
7906 * scheduled another cookie for removal, we cannot remove the
7907 * complete header, but we can remove the previous block itself.
7908 */
7909 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7910
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7911 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7912 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7913 if (att_beg >= del_from)
7914 att_beg += delta;
7915 if (att_end >= del_from)
7916 att_end += delta;
7917 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7918 val_end += delta;
7919 next += delta;
7920 hdr_end += delta;
7921 hdr_next += delta;
7922 cur_hdr->len += delta;
7923 http_msg_move_end(&txn->req, delta);
7924 prev = del_from;
7925 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7926 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7927 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7928
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7929 /* Look for the appsession cookie unless persistence must be ignored */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7930 if (!(s->flags & SF_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7931 int cmp_len, value_len;
7932 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7933
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7934 if (s->be->options2 & PR_O2_AS_PFX) {
7935 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
7936 value_begin = att_beg + s->be->appsession_name_len;
7937 value_len = val_end - att_beg - s->be->appsession_name_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7938 } else {
7939 cmp_len = att_end - att_beg;
7940 value_begin = val_beg;
7941 value_len = val_end - val_beg;
7942 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7943
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7944 /* let's see if the cookie is our appcookie */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7945 if (cmp_len == s->be->appsession_name_len &&
7946 memcmp(att_beg, s->be->appsession_name, cmp_len) == 0) {
7947 manage_client_side_appsession(s, value_begin, value_len);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7948 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7949 }
7950
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7951 /* continue with next cookie on this header line */
7952 att_beg = next;
7953 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7954
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7955 /* There are no more cookies on this line.
7956 * We may still have one (or several) marked for deletion at the
7957 * end of the line. We must do this now in two ways :
7958 * - if some cookies must be preserved, we only delete from the
7959 * mark to the end of line ;
7960 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7961 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7962 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7963 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7964 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7965 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7966 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7967 cur_hdr->len += delta;
7968 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7969 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7970
7971 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7972 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7973 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7974 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7975 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7976 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7977 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7978 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7979 }
7980
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7981 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7982 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7983 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7984}
7985
7986
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7987/* Iterate the same filter through all response headers contained in <rtr>.
7988 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7989 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7990int 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]7991{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7992 char *cur_ptr, *cur_end, *cur_next;
7993 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7994 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7995 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7996 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7997
7998 last_hdr = 0;
7999
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8000 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8001 old_idx = 0;
8002
8003 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8004 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8005 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8006 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8007 (exp->action == ACT_ALLOW ||
8008 exp->action == ACT_DENY))
8009 return 0;
8010
8011 cur_idx = txn->hdr_idx.v[old_idx].next;
8012 if (!cur_idx)
8013 break;
8014
8015 cur_hdr = &txn->hdr_idx.v[cur_idx];
8016 cur_ptr = cur_next;
8017 cur_end = cur_ptr + cur_hdr->len;
8018 cur_next = cur_end + cur_hdr->cr + 1;
8019
8020 /* Now we have one header between cur_ptr and cur_end,
8021 * and the next header starts at cur_next.
8022 */
8023
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]8024 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]8025 switch (exp->action) {
8026 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8027 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8028 last_hdr = 1;
8029 break;
8030
8031 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8032 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8033 last_hdr = 1;
8034 break;
8035
8036 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8037 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
8038 if (trash.len < 0)
8039 return -1;
8040
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8041 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8042 /* FIXME: if the user adds a newline in the replacement, the
8043 * index will not be recalculated for now, and the new line
8044 * will not be counted as a new header.
8045 */
8046
8047 cur_end += delta;
8048 cur_next += delta;
8049 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8050 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8051 break;
8052
8053 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8054 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8055 cur_next += delta;
8056
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 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8059 txn->hdr_idx.used--;
8060 cur_hdr->len = 0;
8061 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8062 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8063 break;
8064
8065 }
8066 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8067
8068 /* keep the link from this header to next one in case of later
8069 * removal of next header.
8070 */
8071 old_idx = cur_idx;
8072 }
8073 return 0;
8074}
8075
8076
8077/* Apply the filter to the status line in the response buffer <rtr>.
8078 * Returns 0 if nothing has been done, 1 if the filter has been applied,
8079 * or -1 if a replacement resulted in an invalid status line.
8080 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8081int 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]8082{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8083 char *cur_ptr, *cur_end;
8084 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8085 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8086 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8087
8088
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8089 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8090 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8091 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8092 (exp->action == ACT_ALLOW ||
8093 exp->action == ACT_DENY))
8094 return 0;
8095 else if (exp->action == ACT_REMOVE)
8096 return 0;
8097
8098 done = 0;
8099
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8100 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]8101 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8102
8103 /* Now we have the status line between cur_ptr and cur_end */
8104
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]8105 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]8106 switch (exp->action) {
8107 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8108 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8109 done = 1;
8110 break;
8111
8112 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8113 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8114 done = 1;
8115 break;
8116
8117 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8118 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
8119 if (trash.len < 0)
8120 return -1;
8121
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8122 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8123 /* FIXME: if the user adds a newline in the replacement, the
8124 * index will not be recalculated for now, and the new line
8125 * will not be counted as a new header.
8126 */
8127
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8128 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8129 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8130 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]8131 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8132 cur_ptr, cur_end + 1,
8133 NULL, NULL);
8134 if (unlikely(!cur_end))
8135 return -1;
8136
8137 /* we have a full respnse and we know that we have either a CR
8138 * or an LF at <ptr>.
8139 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8140 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]8141 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]8142 /* there is no point trying this regex on headers */
8143 return 1;
8144 }
8145 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8146 return done;
8147}
8148
8149
8150
8151/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8152 * 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]8153 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
8154 * unparsable response.
8155 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8156int apply_filters_to_response(struct stream *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8157{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]8158 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8159 struct http_txn *txn = s->txn;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8160 struct hdr_exp *exp;
8161
8162 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8163 int ret;
8164
8165 /*
8166 * The interleaving of transformations and verdicts
8167 * makes it difficult to decide to continue or stop
8168 * the evaluation.
8169 */
8170
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8171 if (txn->flags & TX_SVDENY)
8172 break;
8173
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8174 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8175 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
8176 exp->action == ACT_PASS)) {
8177 exp = exp->next;
8178 continue;
8179 }
8180
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8181 /* if this filter had a condition, evaluate it now and skip to
8182 * next filter if the condition does not match.
8183 */
8184 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]8185 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]8186 ret = acl_pass(ret);
8187 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
8188 ret = !ret;
8189 if (!ret)
8190 continue;
8191 }
8192
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8193 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8194 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8195 if (unlikely(ret < 0))
8196 return -1;
8197
8198 if (likely(ret == 0)) {
8199 /* The filter did not match the response, it can be
8200 * iterated through all headers.
8201 */
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8202 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
8203 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8204 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8205 }
8206 return 0;
8207}
8208
8209
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8210/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]8211 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8212 * desirable to call it only when needed. This function is also used when we
8213 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8214 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8215void manage_server_side_cookies(struct stream *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8216{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8217 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8218 struct session *sess = s->sess;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8219 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8220 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8221 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8222 char *hdr_beg, *hdr_end, *hdr_next;
8223 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8224
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8225 /* Iterate through the headers.
8226 * we start with the start line.
8227 */
8228 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8229 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8230
8231 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
8232 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8233 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8234
8235 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8236 hdr_beg = hdr_next;
8237 hdr_end = hdr_beg + cur_hdr->len;
8238 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8239
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8240 /* We have one full header between hdr_beg and hdr_end, and the
8241 * next header starts at hdr_next. We're only interested in
8242 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8243 */
8244
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8245 is_cookie2 = 0;
8246 prev = hdr_beg + 10;
8247 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8248 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8249 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
8250 if (!val) {
8251 old_idx = cur_idx;
8252 continue;
8253 }
8254 is_cookie2 = 1;
8255 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8256 }
8257
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8258 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
8259 * <prev> points to the colon.
8260 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8261 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8262
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8263 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
8264 * check-cache is enabled) and we are not interested in checking
8265 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]8266 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8267 if (s->be->cookie_name == NULL &&
8268 s->be->appsession_name == NULL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8269 sess->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8270 return;
8271
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8272 /* OK so now we know we have to process this response cookie.
8273 * The format of the Set-Cookie header is slightly different
8274 * from the format of the Cookie header in that it does not
8275 * support the comma as a cookie delimiter (thus the header
8276 * cannot be folded) because the Expires attribute described in
8277 * the original Netscape's spec may contain an unquoted date
8278 * with a comma inside. We have to live with this because
8279 * many browsers don't support Max-Age and some browsers don't
8280 * support quoted strings. However the Set-Cookie2 header is
8281 * clean.
8282 *
8283 * We have to keep multiple pointers in order to support cookie
8284 * removal at the beginning, middle or end of header without
8285 * corrupting the header (in case of set-cookie2). A special
8286 * pointer, <scav> points to the beginning of the set-cookie-av
8287 * fields after the first semi-colon. The <next> pointer points
8288 * either to the end of line (set-cookie) or next unquoted comma
8289 * (set-cookie2). All of these headers are valid :
8290 *
8291 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
8292 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8293 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8294 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
8295 * | | | | | | | | | |
8296 * | | | | | | | | +-> next hdr_end <--+
8297 * | | | | | | | +------------> scav
8298 * | | | | | | +--------------> val_end
8299 * | | | | | +--------------------> val_beg
8300 * | | | | +----------------------> equal
8301 * | | | +------------------------> att_end
8302 * | | +----------------------------> att_beg
8303 * | +------------------------------> prev
8304 * +-----------------------------------------> hdr_beg
8305 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8306
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8307 for (; prev < hdr_end; prev = next) {
8308 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8309
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8310 /* find att_beg */
8311 att_beg = prev + 1;
8312 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8313 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8314
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8315 /* find att_end : this is the first character after the last non
8316 * space before the equal. It may be equal to hdr_end.
8317 */
8318 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8319
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8320 while (equal < hdr_end) {
8321 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
8322 break;
8323 if (http_is_spht[(unsigned char)*equal++])
8324 continue;
8325 att_end = equal;
8326 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8327
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8328 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8329 * is between <att_beg> and <equal>, both may be identical.
8330 */
8331
8332 /* look for end of cookie if there is an equal sign */
8333 if (equal < hdr_end && *equal == '=') {
8334 /* look for the beginning of the value */
8335 val_beg = equal + 1;
8336 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8337 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8338
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8339 /* find the end of the value, respecting quotes */
8340 next = find_cookie_value_end(val_beg, hdr_end);
8341
8342 /* make val_end point to the first white space or delimitor after the value */
8343 val_end = next;
8344 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8345 val_end--;
8346 } else {
8347 /* <equal> points to next comma, semi-colon or EOL */
8348 val_beg = val_end = next = equal;
8349 }
8350
8351 if (next < hdr_end) {
8352 /* Set-Cookie2 supports multiple cookies, and <next> points to
8353 * a colon or semi-colon before the end. So skip all attr-value
8354 * pairs and look for the next comma. For Set-Cookie, since
8355 * commas are permitted in values, skip to the end.
8356 */
8357 if (is_cookie2)
8358 next = find_hdr_value_end(next, hdr_end);
8359 else
8360 next = hdr_end;
8361 }
8362
8363 /* Now everything is as on the diagram above */
8364
8365 /* Ignore cookies with no equal sign */
8366 if (equal == val_end)
8367 continue;
8368
8369 /* If there are spaces around the equal sign, we need to
8370 * strip them otherwise we'll get trouble for cookie captures,
8371 * or even for rewrites. Since this happens extremely rarely,
8372 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8373 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8374 if (unlikely(att_end != equal || val_beg > equal + 1)) {
8375 int stripped_before = 0;
8376 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8377
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8378 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8379 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8380 equal += stripped_before;
8381 val_beg += stripped_before;
8382 }
8383
8384 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8385 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8386 val_beg += stripped_after;
8387 stripped_before += stripped_after;
8388 }
8389
8390 val_end += stripped_before;
8391 next += stripped_before;
8392 hdr_end += stripped_before;
8393 hdr_next += stripped_before;
8394 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]8395 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8396 }
8397
8398 /* First, let's see if we want to capture this cookie. We check
8399 * that we don't already have a server side cookie, because we
8400 * can only capture one. Also as an optimisation, we ignore
8401 * cookies shorter than the declared name.
8402 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8403 if (sess->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]8404 txn->srv_cookie == NULL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8405 (val_end - att_beg >= sess->fe->capture_namelen) &&
8406 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8407 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]8408 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8409 Alert("HTTP logging : out of memory.\n");
8410 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8411 else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8412 if (log_len > sess->fe->capture_len)
8413 log_len = sess->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8414 memcpy(txn->srv_cookie, att_beg, log_len);
8415 txn->srv_cookie[log_len] = 0;
8416 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8417 }
8418
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8419 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8420 /* now check if we need to process it for persistence */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8421 if (!(s->flags & SF_IGNORE_PRST) &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8422 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
8423 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8424 /* assume passive cookie by default */
8425 txn->flags &= ~TX_SCK_MASK;
8426 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8427
8428 /* If the cookie is in insert mode on a known server, we'll delete
8429 * this occurrence because we'll insert another one later.
8430 * 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]8431 * a direct access.
8432 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8433 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]8434 /* The "preserve" flag was set, we don't want to touch the
8435 * server's cookie.
8436 */
8437 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8438 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8439 ((s->flags & SF_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8440 /* this cookie must be deleted */
8441 if (*prev == ':' && next == hdr_end) {
8442 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8443 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8444 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8445 txn->hdr_idx.used--;
8446 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8447 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8448 hdr_next += delta;
8449 http_msg_move_end(&txn->rsp, delta);
8450 /* note: while both invalid now, <next> and <hdr_end>
8451 * are still equal, so the for() will stop as expected.
8452 */
8453 } else {
8454 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8455 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8456 next = prev;
8457 hdr_end += delta;
8458 hdr_next += delta;
8459 cur_hdr->len += delta;
8460 http_msg_move_end(&txn->rsp, delta);
8461 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8462 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8463 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8464 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8465 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8466 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8467 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8468 * with this server since we know it.
8469 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8470 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8471 next += delta;
8472 hdr_end += delta;
8473 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8474 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8475 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8476
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8477 txn->flags &= ~TX_SCK_MASK;
8478 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8479 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8480 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8481 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8482 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8483 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8484 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8485 next += delta;
8486 hdr_end += delta;
8487 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8488 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8489 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8490
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8491 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8492 txn->flags &= ~TX_SCK_MASK;
8493 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8494 }
8495 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]8496 /* 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]8497 else if (!(s->flags & SF_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8498 int cmp_len, value_len;
8499 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8500
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8501 if (s->be->options2 & PR_O2_AS_PFX) {
8502 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
8503 value_begin = att_beg + s->be->appsession_name_len;
8504 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]8505 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8506 cmp_len = att_end - att_beg;
8507 value_begin = val_beg;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8508 value_len = MIN(s->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8509 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8510
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8511 if ((cmp_len == s->be->appsession_name_len) &&
8512 (memcmp(att_beg, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8513 /* free a possibly previously allocated memory */
8514 pool_free2(apools.sessid, txn->sessid);
8515
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8516 /* Store the sessid in the stream for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8517 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8518 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8519 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]8520 return;
8521 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8522 memcpy(txn->sessid, value_begin, value_len);
8523 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8524 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8525 }
8526 /* that's done for this cookie, check the next one on the same
8527 * line when next != hdr_end (only if is_cookie2).
8528 */
8529 }
8530 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8531 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8532 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8533
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8534 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8535 appsess *asession = NULL;
8536 /* only do insert, if lookup fails */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8537 asession = appsession_hash_lookup(&(s->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8538 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]8539 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8540 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
8541 Alert("Not enough Memory process_srv():asession:calloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8542 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8543 return;
8544 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8545 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
8546
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8547 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
8548 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8549 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8550 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8551 return;
8552 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8553 memcpy(asession->sessid, txn->sessid, s->be->appsession_len);
8554 asession->sessid[s->be->appsession_len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8555
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8556 server_id_len = strlen(objt_server(s->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8557 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8558 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8559 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8560 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8561 return;
8562 }
8563 asession->serverid[0] = '\0';
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8564 memcpy(asession->serverid, objt_server(s->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8565
8566 asession->request_count = 0;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8567 appsession_hash_insert(&(s->be->htbl_proxy), asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8568 }
8569
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8570 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8571 asession->request_count++;
8572 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8573}
8574
8575
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8576/*
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8577 * Check if response is cacheable or not. Updates s->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8578 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8579void check_response_for_cacheability(struct stream *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8580{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8581 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8582 char *p1, *p2;
8583
8584 char *cur_ptr, *cur_end, *cur_next;
8585 int cur_idx;
8586
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]8587 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8588 return;
8589
8590 /* Iterate through the headers.
8591 * we start with the start line.
8592 */
8593 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8594 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8595
8596 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
8597 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8598 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8599
8600 cur_hdr = &txn->hdr_idx.v[cur_idx];
8601 cur_ptr = cur_next;
8602 cur_end = cur_ptr + cur_hdr->len;
8603 cur_next = cur_end + cur_hdr->cr + 1;
8604
8605 /* We have one full header between cur_ptr and cur_end, and the
8606 * next header starts at cur_next. We're only interested in
8607 * "Cookie:" headers.
8608 */
8609
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8610 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
8611 if (val) {
8612 if ((cur_end - (cur_ptr + val) >= 8) &&
8613 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
8614 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
8615 return;
8616 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8617 }
8618
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8619 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
8620 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8621 continue;
8622
8623 /* OK, right now we know we have a cache-control header at cur_ptr */
8624
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8625 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8626
8627 if (p1 >= cur_end) /* no more info */
8628 continue;
8629
8630 /* p1 is at the beginning of the value */
8631 p2 = p1;
8632
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]8633 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8634 p2++;
8635
8636 /* we have a complete value between p1 and p2 */
8637 if (p2 < cur_end && *p2 == '=') {
8638 /* we have something of the form no-cache="set-cookie" */
8639 if ((cur_end - p1 >= 21) &&
8640 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
8641 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8642 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8643 continue;
8644 }
8645
8646 /* OK, so we know that either p2 points to the end of string or to a comma */
8647 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8648 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8649 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8650 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8651 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8652 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8653 return;
8654 }
8655
8656 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8657 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8658 continue;
8659 }
8660 }
8661}
8662
8663
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8664/*
8665 * Try to retrieve a known appsession in the URI, then the associated server.
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8666 * If the server is found, it's assigned to the stream.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8667 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8668void get_srv_from_appsession(struct stream *s, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8669{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8670 char *end_params, *first_param, *cur_param, *next_param;
8671 char separator;
8672 int value_len;
8673
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8674 int mode = s->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8675
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8676 if (s->be->appsession_name == NULL ||
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8677 (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]8678 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8679 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8680
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8681 first_param = NULL;
8682 switch (mode) {
8683 case PR_O2_AS_M_PP:
8684 first_param = memchr(begin, ';', len);
8685 break;
8686 case PR_O2_AS_M_QS:
8687 first_param = memchr(begin, '?', len);
8688 break;
8689 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8690
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8691 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8692 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8693 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8694
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8695 switch (mode) {
8696 case PR_O2_AS_M_PP:
8697 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
8698 end_params = (char *) begin + len;
8699 }
8700 separator = ';';
8701 break;
8702 case PR_O2_AS_M_QS:
8703 end_params = (char *) begin + len;
8704 separator = '&';
8705 break;
8706 default:
8707 /* unknown mode, shouldn't happen */
8708 return;
8709 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8710
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8711 cur_param = next_param = end_params;
8712 while (cur_param > first_param) {
8713 cur_param--;
8714 if ((cur_param[0] == separator) || (cur_param == first_param)) {
8715 /* let's see if this is the appsession parameter */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8716 if ((cur_param + s->be->appsession_name_len + 1 < next_param) &&
8717 ((s->be->options2 & PR_O2_AS_PFX) || cur_param[s->be->appsession_name_len + 1] == '=') &&
8718 (strncasecmp(cur_param + 1, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8719 /* Cool... it's the right one */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8720 cur_param += s->be->appsession_name_len + (s->be->options2 & PR_O2_AS_PFX ? 1 : 2);
8721 value_len = MIN(s->be->appsession_len, next_param - cur_param);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8722 if (value_len > 0) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8723 manage_client_side_appsession(s, cur_param, value_len);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8724 }
8725 break;
8726 }
8727 next_param = cur_param;
8728 }
8729 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8730#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]8731 Alert("get_srv_from_appsession\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8732 appsession_hash_dump(&(s->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8733#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8734}
8735
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8736/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8737 * 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]8738 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8739 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8740 * 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]8741 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8742 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8743 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8744 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8745int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8746{
8747 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8748 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8749 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8750
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8751 if (!uri_auth)
8752 return 0;
8753
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8754 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]8755 return 0;
8756
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8757 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8758 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8759 return 0;
8760
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8761 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8762 return 0;
8763
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8764 return 1;
8765}
8766
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8767/*
8768 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8769 * By default it tries to report the error position as msg->err_pos. However if
8770 * this one is not set, it will then report msg->next, which is the last known
8771 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8772 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8773 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8774void http_capture_bad_message(struct error_snapshot *es, struct stream *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8775 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8776 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8777{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8778 struct session *sess = strm_sess(s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8779 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8780 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8781
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8782 es->len = MIN(chn->buf->i, sizeof(es->buf));
8783 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8784 len1 = MIN(len1, es->len);
8785 len2 = es->len - len1; /* remaining data if buffer wraps */
8786
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8787 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8788 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8789 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8790
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8791 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8792 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8793 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8794 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8795
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8796 es->when = date; // user-visible date
8797 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8798 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8799 es->oe = other_end;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8800 if (objt_conn(sess->origin))
8801 es->src = __objt_conn(sess->origin)->addr.from;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8802 else
8803 memset(&es->src, 0, sizeof(es->src));
8804
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8805 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8806 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8807 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8808 es->s_flags = s->flags;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8809 es->t_flags = s->txn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8810 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8811 es->b_out = chn->buf->o;
8812 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8813 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8814 es->m_clen = msg->chunk_len;
8815 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8816}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8817
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8818/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8819 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8820 * performed over the whole headers. Otherwise it must contain a valid header
8821 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8822 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8823 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8824 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8825 * -1. The value fetch stops at commas, so this function is suited for use with
8826 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8827 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8828 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8829unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8830 struct hdr_idx *idx, int occ,
8831 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8832{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8833 struct hdr_ctx local_ctx;
8834 char *ptr_hist[MAX_HDR_HISTORY];
8835 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8836 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8837 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8838
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8839 if (!ctx) {
8840 local_ctx.idx = 0;
8841 ctx = &local_ctx;
8842 }
8843
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8844 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8845 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8846 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8847 occ--;
8848 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8849 *vptr = ctx->line + ctx->val;
8850 *vlen = ctx->vlen;
8851 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8852 }
8853 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8854 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8855 }
8856
8857 /* negative occurrence, we scan all the list then walk back */
8858 if (-occ > MAX_HDR_HISTORY)
8859 return 0;
8860
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8861 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8862 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8863 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8864 len_hist[hist_ptr] = ctx->vlen;
8865 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8866 hist_ptr = 0;
8867 found++;
8868 }
8869 if (-occ > found)
8870 return 0;
8871 /* 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]8872 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8873 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8874 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8875 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8876 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8877 if (hist_ptr >= MAX_HDR_HISTORY)
8878 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8879 *vptr = ptr_hist[hist_ptr];
8880 *vlen = len_hist[hist_ptr];
8881 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8882}
8883
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8884/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8885 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8886 * performed over the whole headers. Otherwise it must contain a valid header
8887 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8888 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8889 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8890 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8891 * -1. This function differs from http_get_hdr() in that it only returns full
8892 * line header values and does not stop at commas.
8893 * The return value is 0 if nothing was found, or non-zero otherwise.
8894 */
8895unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8896 struct hdr_idx *idx, int occ,
8897 struct hdr_ctx *ctx, char **vptr, int *vlen)
8898{
8899 struct hdr_ctx local_ctx;
8900 char *ptr_hist[MAX_HDR_HISTORY];
8901 int len_hist[MAX_HDR_HISTORY];
8902 unsigned int hist_ptr;
8903 int found;
8904
8905 if (!ctx) {
8906 local_ctx.idx = 0;
8907 ctx = &local_ctx;
8908 }
8909
8910 if (occ >= 0) {
8911 /* search from the beginning */
8912 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8913 occ--;
8914 if (occ <= 0) {
8915 *vptr = ctx->line + ctx->val;
8916 *vlen = ctx->vlen;
8917 return 1;
8918 }
8919 }
8920 return 0;
8921 }
8922
8923 /* negative occurrence, we scan all the list then walk back */
8924 if (-occ > MAX_HDR_HISTORY)
8925 return 0;
8926
8927 found = hist_ptr = 0;
8928 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8929 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8930 len_hist[hist_ptr] = ctx->vlen;
8931 if (++hist_ptr >= MAX_HDR_HISTORY)
8932 hist_ptr = 0;
8933 found++;
8934 }
8935 if (-occ > found)
8936 return 0;
8937 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
8938 * find occurrence -occ, so we have to check [hist_ptr+occ].
8939 */
8940 hist_ptr += occ;
8941 if (hist_ptr >= MAX_HDR_HISTORY)
8942 hist_ptr -= MAX_HDR_HISTORY;
8943 *vptr = ptr_hist[hist_ptr];
8944 *vlen = len_hist[hist_ptr];
8945 return 1;
8946}
8947
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8948/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8949 * Print a debug line with a header. Always stop at the first CR or LF char,
8950 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8951 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8952 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8953void debug_hdr(const char *dir, struct stream *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8954{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8955 struct session *sess = strm_sess(s);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8956 int max;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8957
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8958 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8959 dir,
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8960 objt_conn(sess->origin) ? (unsigned short)objt_conn(sess->origin)->t.sock.fd : -1,
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]8961 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]8962
8963 for (max = 0; start + max < end; max++)
8964 if (start[max] == '\r' || start[max] == '\n')
8965 break;
8966
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8967 UBOUND(max, trash.size - trash.len - 3);
8968 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8969 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8970 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8971}
8972
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8973
8974/* Allocate a new HTTP transaction for stream <s> unless there is one already.
8975 * The hdr_idx is allocated as well. In case of allocation failure, everything
8976 * allocated is freed and NULL is returned. Otherwise the new transaction is
8977 * assigned to the stream and returned.
8978 */
8979struct http_txn *http_alloc_txn(struct stream *s)
8980{
8981 struct http_txn *txn = s->txn;
8982
8983 if (txn)
8984 return txn;
8985
8986 txn = pool_alloc2(pool2_http_txn);
8987 if (!txn)
8988 return txn;
8989
8990 txn->hdr_idx.size = global.tune.max_http_hdr;
8991 txn->hdr_idx.v = pool_alloc2(pool2_hdr_idx);
8992 if (!txn->hdr_idx.v) {
8993 pool_free2(pool2_http_txn, txn);
8994 return NULL;
8995 }
8996
8997 s->txn = txn;
8998 return txn;
8999}
9000
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9001/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]9002 * Initialize a new HTTP transaction for stream <s>. It is assumed that all
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9003 * the required fields are properly allocated and that we only need to (re)init
9004 * them. This should be used before processing any new request.
9005 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]9006void http_init_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9007{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]9008 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9009 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9010
9011 txn->flags = 0;
9012 txn->status = -1;
9013
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]9014 txn->cookie_first_date = 0;
9015 txn->cookie_last_date = 0;
9016
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]9017 txn->sessid = NULL;
9018 txn->srv_cookie = NULL;
9019 txn->cli_cookie = NULL;
9020 txn->uri = NULL;
9021
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]9022 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]9023 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]9024 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]9025 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]9026 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]9027 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]9028 txn->req.chunk_len = 0LL;
9029 txn->req.body_len = 0LL;
9030 txn->rsp.chunk_len = 0LL;
9031 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9032 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
9033 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9034 txn->req.chn = &s->req;
9035 txn->rsp.chn = &s->res;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9036
9037 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9038
9039 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
9040 if (fe->options2 & PR_O2_REQBUG_OK)
9041 txn->req.err_pos = -1; /* let buggy requests pass */
9042
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9043 if (txn->hdr_idx.v)
9044 hdr_idx_init(&txn->hdr_idx);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]9045
9046 vars_init(&s->vars_txn, SCOPE_TXN);
9047 vars_init(&s->vars_reqres, SCOPE_REQ);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9048}
9049
9050/* to be used at the end of a transaction */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]9051void http_end_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9052{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]9053 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9054 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9055
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]9056 /* release any possible compression context */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]9057 if (s->flags & SF_COMP_READY)
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]9058 s->comp_algo->end(&s->comp_ctx);
9059 s->comp_algo = NULL;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]9060 s->flags &= ~SF_COMP_READY;
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]9061
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9062 /* these ones will have been dynamically allocated */
9063 pool_free2(pool2_requri, txn->uri);
9064 pool_free2(pool2_capture, txn->cli_cookie);
9065 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]9066 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]9067 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9068
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]9069 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]9070 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9071 txn->uri = NULL;
9072 txn->srv_cookie = NULL;
9073 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9074
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]9075 if (s->req_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9076 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]9077 for (h = fe->req_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]9078 pool_free2(h->pool, s->req_cap[h->index]);
9079 memset(s->req_cap, 0, fe->nb_req_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9080 }
9081
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]9082 if (s->res_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->rsp_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]9085 pool_free2(h->pool, s->res_cap[h->index]);
9086 memset(s->res_cap, 0, fe->nb_rsp_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9087 }
9088
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]9089 vars_prune(&s->vars_txn, s);
9090 vars_prune(&s->vars_reqres, s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9091}
9092
9093/* to be used at the end of a transaction to prepare a new one */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]9094void http_reset_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9095{
9096 http_end_txn(s);
9097 http_init_txn(s);
9098
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]9099 /* reinitialise the current rule list pointer to NULL. We are sure that
9100 * any rulelist match the NULL pointer.
9101 */
9102 s->current_rule_list = NULL;
9103
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9104 s->be = strm_fe(s);
9105 s->logs.logwait = strm_fe(s)->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]9106 s->logs.level = 0;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]9107 stream_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]9108 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]9109 /* re-init store persistence */
9110 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]9111 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]9112
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9113 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9114
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9115 s->req.flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9116
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]9117 /* We must trim any excess data from the response buffer, because we
9118 * may have blocked an invalid response from a server that we don't
9119 * want to accidentely forward once we disable the analysers, nor do
9120 * we want those data to come along with next response. A typical
9121 * example of such data would be from a buggy server responding to
9122 * a HEAD with some data, or sending more than the advertised
9123 * content-length.
9124 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9125 if (unlikely(s->res.buf->i))
9126 s->res.buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]9127
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9128 s->req.rto = strm_fe(s)->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9129 s->req.wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9130
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9131 s->res.rto = TICK_ETERNITY;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9132 s->res.wto = strm_fe(s)->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9133
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9134 s->req.rex = TICK_ETERNITY;
9135 s->req.wex = TICK_ETERNITY;
9136 s->req.analyse_exp = TICK_ETERNITY;
9137 s->res.rex = TICK_ETERNITY;
9138 s->res.wex = TICK_ETERNITY;
9139 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9140}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]9141
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9142void free_http_res_rules(struct list *r)
9143{
9144 struct http_res_rule *tr, *pr;
9145
9146 list_for_each_entry_safe(pr, tr, r, list) {
9147 LIST_DEL(&pr->list);
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9148 regex_free(&pr->arg.hdr_add.re);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9149 free(pr);
9150 }
9151}
9152
9153void free_http_req_rules(struct list *r)
9154{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9155 struct http_req_rule *tr, *pr;
9156
9157 list_for_each_entry_safe(pr, tr, r, list) {
9158 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9159 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9160 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9161
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9162 regex_free(&pr->arg.hdr_add.re);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9163 free(pr);
9164 }
9165}
9166
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9167/* parse an "http-request" rule */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9168struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
9169{
9170 struct http_req_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9171 struct http_req_action_kw *custom = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9172 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9173 char *error;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9174
9175 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
9176 if (!rule) {
9177 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9178 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9179 }
9180
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9181 rule->deny_status = HTTP_ERR_403;
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9182 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9183 rule->action = HTTP_REQ_ACT_ALLOW;
9184 cur_arg = 1;
Willy Tarreau5bd67592014-04-28 22:00:46 +0200[diff] [blame]9185 } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block")) {
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9186 int code;
9187 int hc;
9188
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9189 rule->action = HTTP_REQ_ACT_DENY;
9190 cur_arg = 1;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9191 if (strcmp(args[cur_arg], "deny_status") == 0) {
9192 cur_arg++;
9193 if (!args[cur_arg]) {
9194 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing status code.\n",
9195 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9196 goto out_err;
9197 }
9198
9199 code = atol(args[cur_arg]);
9200 cur_arg++;
9201 for (hc = 0; hc < HTTP_ERR_SIZE; hc++) {
9202 if (http_err_codes[hc] == code) {
9203 rule->deny_status = hc;
9204 break;
9205 }
9206 }
9207
9208 if (hc >= HTTP_ERR_SIZE) {
9209 Warning("parsing [%s:%d] : status code %d not handled, using default code 403.\n",
9210 file, linenum, code);
9211 }
9212 }
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]9213 } else if (!strcmp(args[0], "tarpit")) {
9214 rule->action = HTTP_REQ_ACT_TARPIT;
9215 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9216 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9217 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9218 cur_arg = 1;
9219
9220 while(*args[cur_arg]) {
9221 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9222 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9223 cur_arg+=2;
9224 continue;
9225 } else
9226 break;
9227 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9228 } else if (!strcmp(args[0], "set-nice")) {
9229 rule->action = HTTP_REQ_ACT_SET_NICE;
9230 cur_arg = 1;
9231
9232 if (!*args[cur_arg] ||
9233 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9234 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
9235 file, linenum, args[0]);
9236 goto out_err;
9237 }
9238 rule->arg.nice = atoi(args[cur_arg]);
9239 if (rule->arg.nice < -1024)
9240 rule->arg.nice = -1024;
9241 else if (rule->arg.nice > 1024)
9242 rule->arg.nice = 1024;
9243 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9244 } else if (!strcmp(args[0], "set-tos")) {
9245#ifdef IP_TOS
9246 char *err;
9247 rule->action = HTTP_REQ_ACT_SET_TOS;
9248 cur_arg = 1;
9249
9250 if (!*args[cur_arg] ||
9251 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9252 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
9253 file, linenum, args[0]);
9254 goto out_err;
9255 }
9256
9257 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9258 if (err && *err != '\0') {
9259 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
9260 file, linenum, err, args[0]);
9261 goto out_err;
9262 }
9263 cur_arg++;
9264#else
9265 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9266 goto out_err;
9267#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9268 } else if (!strcmp(args[0], "set-mark")) {
9269#ifdef SO_MARK
9270 char *err;
9271 rule->action = HTTP_REQ_ACT_SET_MARK;
9272 cur_arg = 1;
9273
9274 if (!*args[cur_arg] ||
9275 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9276 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
9277 file, linenum, args[0]);
9278 goto out_err;
9279 }
9280
9281 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9282 if (err && *err != '\0') {
9283 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
9284 file, linenum, err, args[0]);
9285 goto out_err;
9286 }
9287 cur_arg++;
9288 global.last_checks |= LSTCHK_NETADM;
9289#else
9290 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9291 goto out_err;
9292#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9293 } else if (!strcmp(args[0], "set-log-level")) {
9294 rule->action = HTTP_REQ_ACT_SET_LOGL;
9295 cur_arg = 1;
9296
9297 if (!*args[cur_arg] ||
9298 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9299 bad_log_level:
9300 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
9301 file, linenum, args[0]);
9302 goto out_err;
9303 }
9304 if (strcmp(args[cur_arg], "silent") == 0)
9305 rule->arg.loglevel = -1;
9306 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
9307 goto bad_log_level;
9308 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9309 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
9310 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
9311 cur_arg = 1;
9312
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]9313 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9314 (*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]9315 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9316 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9317 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9318 }
9319
9320 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9321 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9322 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]9323
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9324 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9325 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]9326 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9327 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9328 free(proxy->conf.lfs_file);
9329 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9330 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9331 cur_arg += 2;
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9332 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
9333 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]9334 cur_arg = 1;
9335
9336 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann92df3702014-06-24 11:10:00 +0200[diff] [blame]9337 (*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]9338 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
9339 file, linenum, args[0]);
9340 goto out_err;
9341 }
9342
9343 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9344 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9345 LIST_INIT(&rule->arg.hdr_add.fmt);
9346
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9347 error = NULL;
9348 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9349 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9350 args[cur_arg + 1], error);
9351 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9352 goto out_err;
9353 }
9354
9355 proxy->conf.args.ctx = ARGC_HRQ;
9356 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9357 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9358 file, linenum);
9359
9360 free(proxy->conf.lfs_file);
9361 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9362 proxy->conf.lfs_line = proxy->conf.args.line;
9363 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9364 } else if (strcmp(args[0], "del-header") == 0) {
9365 rule->action = HTTP_REQ_ACT_DEL_HDR;
9366 cur_arg = 1;
9367
9368 if (!*args[cur_arg] ||
9369 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9370 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9371 file, linenum, args[0]);
9372 goto out_err;
9373 }
9374
9375 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9376 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9377
9378 proxy->conf.args.ctx = ARGC_HRQ;
9379 free(proxy->conf.lfs_file);
9380 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9381 proxy->conf.lfs_line = proxy->conf.args.line;
9382 cur_arg += 1;
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9383 } else if (strncmp(args[0], "track-sc", 8) == 0 &&
9384 args[0][9] == '\0' && args[0][8] >= '0' &&
Willy Tarreaue1cfc1f2014-10-17 11:53:05 +0200[diff] [blame]9385 args[0][8] < '0' + MAX_SESS_STKCTR) { /* track-sc 0..9 */
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9386 struct sample_expr *expr;
9387 unsigned int where;
9388 char *err = NULL;
9389
9390 cur_arg = 1;
9391 proxy->conf.args.ctx = ARGC_TRK;
9392
9393 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9394 if (!expr) {
9395 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9396 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9397 free(err);
9398 goto out_err;
9399 }
9400
9401 where = 0;
9402 if (proxy->cap & PR_CAP_FE)
9403 where |= SMP_VAL_FE_HRQ_HDR;
9404 if (proxy->cap & PR_CAP_BE)
9405 where |= SMP_VAL_BE_HRQ_HDR;
9406
9407 if (!(expr->fetch->val & where)) {
9408 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule :"
9409 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9410 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9411 args[cur_arg-1], sample_src_names(expr->fetch->use));
9412 free(expr);
9413 goto out_err;
9414 }
9415
9416 if (strcmp(args[cur_arg], "table") == 0) {
9417 cur_arg++;
9418 if (!args[cur_arg]) {
9419 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing table name.\n",
9420 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9421 free(expr);
9422 goto out_err;
9423 }
9424 /* we copy the table name for now, it will be resolved later */
9425 rule->act_prm.trk_ctr.table.n = strdup(args[cur_arg]);
9426 cur_arg++;
9427 }
9428 rule->act_prm.trk_ctr.expr = expr;
9429 rule->action = HTTP_REQ_ACT_TRK_SC0 + args[0][8] - '0';
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9430 } else if (strcmp(args[0], "redirect") == 0) {
9431 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]9432 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9433
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9434 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]9435 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9436 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9437 goto out_err;
9438 }
9439
9440 /* this redirect rule might already contain a parsed condition which
9441 * we'll pass to the http-request rule.
9442 */
9443 rule->action = HTTP_REQ_ACT_REDIR;
9444 rule->arg.redir = redir;
9445 rule->cond = redir->cond;
9446 redir->cond = NULL;
9447 cur_arg = 2;
9448 return rule;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9449 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9450 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9451 rule->action = HTTP_REQ_ACT_ADD_ACL;
9452 /*
9453 * '+ 8' for 'add-acl('
9454 * '- 9' for 'add-acl(' + trailing ')'
9455 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9456 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9457
9458 cur_arg = 1;
9459
9460 if (!*args[cur_arg] ||
9461 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9462 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9463 file, linenum, args[0]);
9464 goto out_err;
9465 }
9466
9467 LIST_INIT(&rule->arg.map.key);
9468 proxy->conf.args.ctx = ARGC_HRQ;
9469 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9470 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9471 file, linenum);
9472 free(proxy->conf.lfs_file);
9473 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9474 proxy->conf.lfs_line = proxy->conf.args.line;
9475 cur_arg += 1;
9476 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9477 /* http-request del-acl(<reference (acl name)>) <key pattern> */
9478 rule->action = HTTP_REQ_ACT_DEL_ACL;
9479 /*
9480 * '+ 8' for 'del-acl('
9481 * '- 9' for 'del-acl(' + trailing ')'
9482 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9483 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9484
9485 cur_arg = 1;
9486
9487 if (!*args[cur_arg] ||
9488 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9489 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9490 file, linenum, args[0]);
9491 goto out_err;
9492 }
9493
9494 LIST_INIT(&rule->arg.map.key);
9495 proxy->conf.args.ctx = ARGC_HRQ;
9496 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9497 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9498 file, linenum);
9499 free(proxy->conf.lfs_file);
9500 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9501 proxy->conf.lfs_line = proxy->conf.args.line;
9502 cur_arg += 1;
9503 } else if (strncmp(args[0], "del-map", 7) == 0) {
9504 /* http-request del-map(<reference (map name)>) <key pattern> */
9505 rule->action = HTTP_REQ_ACT_DEL_MAP;
9506 /*
9507 * '+ 8' for 'del-map('
9508 * '- 9' for 'del-map(' + trailing ')'
9509 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9510 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9511
9512 cur_arg = 1;
9513
9514 if (!*args[cur_arg] ||
9515 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9516 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9517 file, linenum, args[0]);
9518 goto out_err;
9519 }
9520
9521 LIST_INIT(&rule->arg.map.key);
9522 proxy->conf.args.ctx = ARGC_HRQ;
9523 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9524 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9525 file, linenum);
9526 free(proxy->conf.lfs_file);
9527 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9528 proxy->conf.lfs_line = proxy->conf.args.line;
9529 cur_arg += 1;
9530 } else if (strncmp(args[0], "set-map", 7) == 0) {
9531 /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */
9532 rule->action = HTTP_REQ_ACT_SET_MAP;
9533 /*
9534 * '+ 8' for 'set-map('
9535 * '- 9' for 'set-map(' + trailing ')'
9536 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9537 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9538
9539 cur_arg = 1;
9540
9541 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9542 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9543 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9544 file, linenum, args[0]);
9545 goto out_err;
9546 }
9547
9548 LIST_INIT(&rule->arg.map.key);
9549 LIST_INIT(&rule->arg.map.value);
9550 proxy->conf.args.ctx = ARGC_HRQ;
9551
9552 /* key pattern */
9553 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9554 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9555 file, linenum);
9556
9557 /* value pattern */
9558 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9559 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9560 file, linenum);
9561 free(proxy->conf.lfs_file);
9562 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9563 proxy->conf.lfs_line = proxy->conf.args.line;
9564
9565 cur_arg += 2;
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]9566 } else if (strncmp(args[0], "set-src", 7) == 0) {
9567 struct sample_expr *expr;
9568 unsigned int where;
9569 char *err = NULL;
9570
9571 cur_arg = 1;
9572 proxy->conf.args.ctx = ARGC_HRQ;
9573
9574 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9575 if (!expr) {
9576 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9577 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9578 free(err);
9579 goto out_err;
9580 }
9581
9582 where = 0;
9583 if (proxy->cap & PR_CAP_FE)
9584 where |= SMP_VAL_FE_HRQ_HDR;
9585 if (proxy->cap & PR_CAP_BE)
9586 where |= SMP_VAL_BE_HRQ_HDR;
9587
9588 if (!(expr->fetch->val & where)) {
9589 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule :"
9590 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9591 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9592 args[cur_arg-1], sample_src_names(expr->fetch->use));
9593 free(expr);
9594 goto out_err;
9595 }
9596
9597 rule->arg.act.p[0] = expr;
9598 rule->action = HTTP_REQ_ACT_SET_SRC;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9599 } else if (((custom = action_http_req_custom(args[0])) != NULL)) {
9600 char *errmsg = NULL;
9601 cur_arg = 1;
9602 /* try in the module list */
9603 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9604 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9605 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9606 free(errmsg);
9607 goto out_err;
9608 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9609 } else {
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]9610 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]9611 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9612 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9613 }
9614
9615 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9616 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9617 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9618
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9619 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9620 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
9621 file, linenum, args[0], errmsg);
9622 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9623 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9624 }
9625 rule->cond = cond;
9626 }
9627 else if (*args[cur_arg]) {
9628 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
9629 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9630 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9631 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9632 }
9633
9634 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9635 out_err:
9636 free(rule);
9637 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9638}
9639
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9640/* parse an "http-respose" rule */
9641struct http_res_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
9642{
9643 struct http_res_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9644 struct http_res_action_kw *custom = NULL;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9645 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9646 char *error;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9647
9648 rule = calloc(1, sizeof(*rule));
9649 if (!rule) {
9650 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
9651 goto out_err;
9652 }
9653
9654 if (!strcmp(args[0], "allow")) {
9655 rule->action = HTTP_RES_ACT_ALLOW;
9656 cur_arg = 1;
9657 } else if (!strcmp(args[0], "deny")) {
9658 rule->action = HTTP_RES_ACT_DENY;
9659 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9660 } else if (!strcmp(args[0], "set-nice")) {
9661 rule->action = HTTP_RES_ACT_SET_NICE;
9662 cur_arg = 1;
9663
9664 if (!*args[cur_arg] ||
9665 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9666 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
9667 file, linenum, args[0]);
9668 goto out_err;
9669 }
9670 rule->arg.nice = atoi(args[cur_arg]);
9671 if (rule->arg.nice < -1024)
9672 rule->arg.nice = -1024;
9673 else if (rule->arg.nice > 1024)
9674 rule->arg.nice = 1024;
9675 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9676 } else if (!strcmp(args[0], "set-tos")) {
9677#ifdef IP_TOS
9678 char *err;
9679 rule->action = HTTP_RES_ACT_SET_TOS;
9680 cur_arg = 1;
9681
9682 if (!*args[cur_arg] ||
9683 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9684 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9685 file, linenum, args[0]);
9686 goto out_err;
9687 }
9688
9689 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9690 if (err && *err != '\0') {
9691 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9692 file, linenum, err, args[0]);
9693 goto out_err;
9694 }
9695 cur_arg++;
9696#else
9697 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9698 goto out_err;
9699#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9700 } else if (!strcmp(args[0], "set-mark")) {
9701#ifdef SO_MARK
9702 char *err;
9703 rule->action = HTTP_RES_ACT_SET_MARK;
9704 cur_arg = 1;
9705
9706 if (!*args[cur_arg] ||
9707 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9708 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9709 file, linenum, args[0]);
9710 goto out_err;
9711 }
9712
9713 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9714 if (err && *err != '\0') {
9715 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9716 file, linenum, err, args[0]);
9717 goto out_err;
9718 }
9719 cur_arg++;
9720 global.last_checks |= LSTCHK_NETADM;
9721#else
9722 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9723 goto out_err;
9724#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9725 } else if (!strcmp(args[0], "set-log-level")) {
9726 rule->action = HTTP_RES_ACT_SET_LOGL;
9727 cur_arg = 1;
9728
9729 if (!*args[cur_arg] ||
9730 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9731 bad_log_level:
9732 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
9733 file, linenum, args[0]);
9734 goto out_err;
9735 }
9736 if (strcmp(args[cur_arg], "silent") == 0)
9737 rule->arg.loglevel = -1;
9738 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
9739 goto bad_log_level;
9740 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9741 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
9742 rule->action = *args[0] == 'a' ? HTTP_RES_ACT_ADD_HDR : HTTP_RES_ACT_SET_HDR;
9743 cur_arg = 1;
9744
9745 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9746 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9747 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9748 file, linenum, args[0]);
9749 goto out_err;
9750 }
9751
9752 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9753 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9754 LIST_INIT(&rule->arg.hdr_add.fmt);
9755
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9756 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9757 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]9758 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9759 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9760 free(proxy->conf.lfs_file);
9761 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9762 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9763 cur_arg += 2;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9764 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9765 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]9766 cur_arg = 1;
9767
9768 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann12cb00b2014-08-08 17:29:06 +0200[diff] [blame]9769 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
9770 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 3 arguments.\n",
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9771 file, linenum, args[0]);
9772 goto out_err;
9773 }
9774
9775 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9776 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9777 LIST_INIT(&rule->arg.hdr_add.fmt);
9778
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9779 error = NULL;
9780 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9781 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9782 args[cur_arg + 1], error);
9783 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9784 goto out_err;
9785 }
9786
9787 proxy->conf.args.ctx = ARGC_HRQ;
9788 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9789 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9790 file, linenum);
9791
9792 free(proxy->conf.lfs_file);
9793 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9794 proxy->conf.lfs_line = proxy->conf.args.line;
9795 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9796 } else if (strcmp(args[0], "del-header") == 0) {
9797 rule->action = HTTP_RES_ACT_DEL_HDR;
9798 cur_arg = 1;
9799
9800 if (!*args[cur_arg] ||
9801 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9802 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9803 file, linenum, args[0]);
9804 goto out_err;
9805 }
9806
9807 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9808 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9809
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9810 proxy->conf.args.ctx = ARGC_HRS;
9811 free(proxy->conf.lfs_file);
9812 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9813 proxy->conf.lfs_line = proxy->conf.args.line;
9814 cur_arg += 1;
9815 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9816 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9817 rule->action = HTTP_RES_ACT_ADD_ACL;
9818 /*
9819 * '+ 8' for 'add-acl('
9820 * '- 9' for 'add-acl(' + trailing ')'
9821 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9822 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9823
9824 cur_arg = 1;
9825
9826 if (!*args[cur_arg] ||
9827 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9828 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9829 file, linenum, args[0]);
9830 goto out_err;
9831 }
9832
9833 LIST_INIT(&rule->arg.map.key);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9834 proxy->conf.args.ctx = ARGC_HRS;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9835 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9836 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9837 file, linenum);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9838 free(proxy->conf.lfs_file);
9839 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9840 proxy->conf.lfs_line = proxy->conf.args.line;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9841
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9842 cur_arg += 1;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9843 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9844 /* http-response del-acl(<reference (acl name)>) <key pattern> */
9845 rule->action = HTTP_RES_ACT_DEL_ACL;
9846 /*
9847 * '+ 8' for 'del-acl('
9848 * '- 9' for 'del-acl(' + trailing ')'
9849 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9850 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9851
9852 cur_arg = 1;
9853
9854 if (!*args[cur_arg] ||
9855 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9856 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9857 file, linenum, args[0]);
9858 goto out_err;
9859 }
9860
9861 LIST_INIT(&rule->arg.map.key);
9862 proxy->conf.args.ctx = ARGC_HRS;
9863 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9864 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9865 file, linenum);
9866 free(proxy->conf.lfs_file);
9867 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9868 proxy->conf.lfs_line = proxy->conf.args.line;
9869 cur_arg += 1;
9870 } else if (strncmp(args[0], "del-map", 7) == 0) {
9871 /* http-response del-map(<reference (map name)>) <key pattern> */
9872 rule->action = HTTP_RES_ACT_DEL_MAP;
9873 /*
9874 * '+ 8' for 'del-map('
9875 * '- 9' for 'del-map(' + trailing ')'
9876 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9877 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9878
9879 cur_arg = 1;
9880
9881 if (!*args[cur_arg] ||
9882 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9883 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9884 file, linenum, args[0]);
9885 goto out_err;
9886 }
9887
9888 LIST_INIT(&rule->arg.map.key);
9889 proxy->conf.args.ctx = ARGC_HRS;
9890 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9891 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9892 file, linenum);
9893 free(proxy->conf.lfs_file);
9894 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9895 proxy->conf.lfs_line = proxy->conf.args.line;
9896 cur_arg += 1;
9897 } else if (strncmp(args[0], "set-map", 7) == 0) {
9898 /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */
9899 rule->action = HTTP_RES_ACT_SET_MAP;
9900 /*
9901 * '+ 8' for 'set-map('
9902 * '- 9' for 'set-map(' + trailing ')'
9903 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9904 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9905
9906 cur_arg = 1;
9907
9908 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9909 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9910 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9911 file, linenum, args[0]);
9912 goto out_err;
9913 }
9914
9915 LIST_INIT(&rule->arg.map.key);
9916 LIST_INIT(&rule->arg.map.value);
9917
9918 proxy->conf.args.ctx = ARGC_HRS;
9919
9920 /* key pattern */
9921 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9922 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9923 file, linenum);
9924
9925 /* value pattern */
9926 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9927 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9928 file, linenum);
9929
9930 free(proxy->conf.lfs_file);
9931 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9932 proxy->conf.lfs_line = proxy->conf.args.line;
9933
9934 cur_arg += 2;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]9935 } else if (strcmp(args[0], "redirect") == 0) {
9936 struct redirect_rule *redir;
9937 char *errmsg = NULL;
9938
9939 if ((redir = http_parse_redirect_rule(file, linenum, proxy, (const char **)args + 1, &errmsg, 1, 1)) == NULL) {
9940 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9941 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9942 goto out_err;
9943 }
9944
9945 /* this redirect rule might already contain a parsed condition which
9946 * we'll pass to the http-request rule.
9947 */
9948 rule->action = HTTP_RES_ACT_REDIR;
9949 rule->arg.redir = redir;
9950 rule->cond = redir->cond;
9951 redir->cond = NULL;
9952 cur_arg = 2;
9953 return rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9954 } else if (((custom = action_http_res_custom(args[0])) != NULL)) {
9955 char *errmsg = NULL;
9956 cur_arg = 1;
9957 /* try in the module list */
9958 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9959 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9960 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9961 free(errmsg);
9962 goto out_err;
9963 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9964 } else {
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]9965 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]9966 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
9967 goto out_err;
9968 }
9969
9970 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9971 struct acl_cond *cond;
9972 char *errmsg = NULL;
9973
9974 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9975 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
9976 file, linenum, args[0], errmsg);
9977 free(errmsg);
9978 goto out_err;
9979 }
9980 rule->cond = cond;
9981 }
9982 else if (*args[cur_arg]) {
9983 Alert("parsing [%s:%d]: 'http-response %s' expects"
9984 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9985 file, linenum, args[0], args[cur_arg]);
9986 goto out_err;
9987 }
9988
9989 return rule;
9990 out_err:
9991 free(rule);
9992 return NULL;
9993}
9994
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9995/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9996 * 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]9997 * dynamic log-format rule instead of a static string. Parameter <dir> indicates
9998 * the direction of the rule, and equals 0 for request, non-zero for responses.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9999 */
10000struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]10001 const char **args, char **errmsg, int use_fmt, int dir)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10002{
10003 struct redirect_rule *rule;
10004 int cur_arg;
10005 int type = REDIRECT_TYPE_NONE;
10006 int code = 302;
10007 const char *destination = NULL;
10008 const char *cookie = NULL;
10009 int cookie_set = 0;
10010 unsigned int flags = REDIRECT_FLAG_NONE;
10011 struct acl_cond *cond = NULL;
10012
10013 cur_arg = 0;
10014 while (*(args[cur_arg])) {
10015 if (strcmp(args[cur_arg], "location") == 0) {
10016 if (!*args[cur_arg + 1])
10017 goto missing_arg;
10018
10019 type = REDIRECT_TYPE_LOCATION;
10020 cur_arg++;
10021 destination = args[cur_arg];
10022 }
10023 else if (strcmp(args[cur_arg], "prefix") == 0) {
10024 if (!*args[cur_arg + 1])
10025 goto missing_arg;
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10026 type = REDIRECT_TYPE_PREFIX;
10027 cur_arg++;
10028 destination = args[cur_arg];
10029 }
10030 else if (strcmp(args[cur_arg], "scheme") == 0) {
10031 if (!*args[cur_arg + 1])
10032 goto missing_arg;
10033
10034 type = REDIRECT_TYPE_SCHEME;
10035 cur_arg++;
10036 destination = args[cur_arg];
10037 }
10038 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
10039 if (!*args[cur_arg + 1])
10040 goto missing_arg;
10041
10042 cur_arg++;
10043 cookie = args[cur_arg];
10044 cookie_set = 1;
10045 }
10046 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
10047 if (!*args[cur_arg + 1])
10048 goto missing_arg;
10049
10050 cur_arg++;
10051 cookie = args[cur_arg];
10052 cookie_set = 0;
10053 }
10054 else if (strcmp(args[cur_arg], "code") == 0) {
10055 if (!*args[cur_arg + 1])
10056 goto missing_arg;
10057
10058 cur_arg++;
10059 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]10060 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10061 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]10062 "'%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]10063 args[cur_arg - 1], args[cur_arg]);
10064 return NULL;
10065 }
10066 }
10067 else if (!strcmp(args[cur_arg],"drop-query")) {
10068 flags |= REDIRECT_FLAG_DROP_QS;
10069 }
10070 else if (!strcmp(args[cur_arg],"append-slash")) {
10071 flags |= REDIRECT_FLAG_APPEND_SLASH;
10072 }
10073 else if (strcmp(args[cur_arg], "if") == 0 ||
10074 strcmp(args[cur_arg], "unless") == 0) {
10075 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
10076 if (!cond) {
10077 memprintf(errmsg, "error in condition: %s", *errmsg);
10078 return NULL;
10079 }
10080 break;
10081 }
10082 else {
10083 memprintf(errmsg,
10084 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
10085 args[cur_arg]);
10086 return NULL;
10087 }
10088 cur_arg++;
10089 }
10090
10091 if (type == REDIRECT_TYPE_NONE) {
10092 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
10093 return NULL;
10094 }
10095
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]10096 if (dir && type != REDIRECT_TYPE_LOCATION) {
10097 memprintf(errmsg, "response only supports redirect type 'location'");
10098 return NULL;
10099 }
10100
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10101 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
10102 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]10103 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10104
10105 if (!use_fmt) {
10106 /* old-style static redirect rule */
10107 rule->rdr_str = strdup(destination);
10108 rule->rdr_len = strlen(destination);
10109 }
10110 else {
10111 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10112
10113 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
10114 * if prefix == "/", we don't want to add anything, otherwise it
10115 * makes it hard for the user to configure a self-redirection.
10116 */
Godbachd9722032014-12-18 15:44:58 +0800[diff] [blame]10117 curproxy->conf.args.ctx = ARGC_RDR;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10118 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]10119 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]10120 dir ? (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRS_HDR : SMP_VAL_BE_HRS_HDR
10121 : (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]10122 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]10123 free(curproxy->conf.lfs_file);
10124 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
10125 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10126 }
10127 }
10128
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10129 if (cookie) {
10130 /* depending on cookie_set, either we want to set the cookie, or to clear it.
10131 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
10132 */
10133 rule->cookie_len = strlen(cookie);
10134 if (cookie_set) {
10135 rule->cookie_str = malloc(rule->cookie_len + 10);
10136 memcpy(rule->cookie_str, cookie, rule->cookie_len);
10137 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
10138 rule->cookie_len += 9;
10139 } else {
10140 rule->cookie_str = malloc(rule->cookie_len + 21);
10141 memcpy(rule->cookie_str, cookie, rule->cookie_len);
10142 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
10143 rule->cookie_len += 20;
10144 }
10145 }
10146 rule->type = type;
10147 rule->code = code;
10148 rule->flags = flags;
10149 LIST_INIT(&rule->list);
10150 return rule;
10151
10152 missing_arg:
10153 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
10154 return NULL;
10155}
10156
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10157/************************************************************************/
10158/* The code below is dedicated to ACL parsing and matching */
10159/************************************************************************/
10160
10161
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10162/* This function ensures that the prerequisites for an L7 fetch are ready,
10163 * which means that a request or response is ready. If some data is missing,
10164 * 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]10165 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
10166 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10167 *
10168 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10169 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
10170 * decide whether or not an HTTP message is present ;
10171 * 0 if the requested data cannot be fetched or if it is certain that
10172 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10173 * 1 if an HTTP message is ready
10174 */
10175static int
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10176smp_prefetch_http(struct proxy *px, struct stream *s, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10177 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10178{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10179 struct http_txn *txn;
10180 struct http_msg *msg;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10181
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]10182 /* Note: this function may only be used from places where
10183 * http_init_txn() has already been done, and implies that <s>,
10184 * <txn>, and <hdr_idx.v> are properly set. An extra check protects
10185 * against an eventual mistake in the fetch capability matrix.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10186 */
10187
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10188 if (!s)
10189 return 0;
10190 txn = s->txn;
10191
10192 if (!txn)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10193 return 0;
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10194 msg = &txn->req;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10195
10196 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10197 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10198
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10199 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10200 /* If the buffer does not leave enough free space at the end,
10201 * we must first realign it.
10202 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10203 if (s->req.buf->p > s->req.buf->data &&
10204 s->req.buf->i + s->req.buf->p > s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)
10205 buffer_slow_realign(s->req.buf);
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10206
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10207 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]10208 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10209 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10210
10211 /* Try to decode HTTP request */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10212 if (likely(msg->next < s->req.buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10213 http_msg_analyzer(msg, &txn->hdr_idx);
10214
10215 /* Still no valid request ? */
10216 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]10217 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10218 buffer_full(s->req.buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10219 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10220 }
10221 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10222 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10223 return 0;
10224 }
10225
10226 /* OK we just got a valid HTTP request. We have some minor
10227 * preparation to perform so that further checks can rely
10228 * on HTTP tests.
10229 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10230
10231 /* If the request was parsed but was too large, we must absolutely
10232 * return an error so that it is not processed. At the moment this
10233 * cannot happen, but if the parsers are to change in the future,
10234 * we want this check to be maintained.
10235 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10236 if (unlikely(s->req.buf->i + s->req.buf->p >
10237 s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10238 msg->msg_state = HTTP_MSG_ERROR;
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]10239 smp->data.sint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10240 return 1;
10241 }
10242
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10243 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10244 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]10245 s->flags |= SF_REDIRECTABLE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10246
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10247 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
10248 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10249 }
10250
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10251 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10252 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10253 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10254
10255 /* otherwise everything's ready for the request */
10256 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10257 else {
10258 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10259 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
10260 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10261 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10262 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10263 }
10264
10265 /* everything's OK */
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]10266 smp->data.sint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10267 return 1;
10268}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10269
Willy Tarreau6c616e02014-06-25 16:56:41 +0200[diff] [blame]10270/* Note: these functinos *do* modify the sample. Even in case of success, at
10271 * least the type and uint value are modified.
10272 */
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10273#define CHECK_HTTP_MESSAGE_FIRST() \
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10274 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]10275
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10276#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10277 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]10278
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10279
10280/* 1. Check on METHOD
10281 * We use the pre-parsed method if it is known, and store its number as an
10282 * integer. If it is unknown, we use the pointer and the length.
10283 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]10284static int pat_parse_meth(const char *text, struct pattern *pattern, int mflags, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10285{
10286 int len, meth;
10287
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]10288 len = strlen(text);
10289 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10290
10291 pattern->val.i = meth;
10292 if (meth == HTTP_METH_OTHER) {
Willy Tarreau912c1192014-08-29 15:15:50 +0200[diff] [blame]10293 pattern->ptr.str = (char *)text;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10294 pattern->len = len;
10295 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10296 else {
10297 pattern->ptr.str = NULL;
10298 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10299 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10300 return 1;
10301}
10302
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10303/* This function fetches the method of current HTTP request and stores
10304 * it in the global pattern struct as a chunk. There are two possibilities :
10305 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
10306 * in <len> and <ptr> is NULL ;
10307 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
10308 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10309 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10310 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10311static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10312smp_fetch_meth(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10313{
10314 int meth;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10315 struct http_txn *txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10316
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10317 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10318
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10319 meth = txn->meth;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10320 smp->type = SMP_T_METH;
10321 smp->data.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10322 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10323 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
10324 /* ensure the indexes are not affected */
10325 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10326 smp->flags |= SMP_F_CONST;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10327 smp->data.meth.str.len = txn->req.sl.rq.m_l;
10328 smp->data.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10329 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10330 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10331 return 1;
10332}
10333
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10334/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10335static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10336{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10337 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10338 struct pattern_list *lst;
10339 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10340
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10341 list_for_each_entry(lst, &expr->patterns, list) {
10342 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10343
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10344 /* well-known method */
10345 if (pattern->val.i != HTTP_METH_OTHER) {
10346 if (smp->data.meth.meth == pattern->val.i)
10347 return pattern;
10348 else
10349 continue;
10350 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10351
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10352 /* Other method, we must compare the strings */
10353 if (pattern->len != smp->data.meth.str.len)
10354 continue;
10355
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]10356 icase = expr->mflags & PAT_MF_IGNORE_CASE;
Willy Tarreau4de2a942014-08-28 20:42:57 +0200[diff] [blame]10357 if ((icase && strncasecmp(pattern->ptr.str, smp->data.meth.str.str, smp->data.meth.str.len) == 0) ||
10358 (!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]10359 return pattern;
10360 }
10361 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10362}
10363
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10364static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10365smp_fetch_rqver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10366{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10367 struct http_txn *txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10368 char *ptr;
10369 int len;
10370
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10371 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10372
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10373 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10374 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10375
10376 while ((len-- > 0) && (*ptr++ != '/'));
10377 if (len <= 0)
10378 return 0;
10379
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10380 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10381 smp->data.str.str = ptr;
10382 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10383
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10384 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10385 return 1;
10386}
10387
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10388static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10389smp_fetch_stver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10390{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10391 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10392 char *ptr;
10393 int len;
10394
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10395 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10396
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10397 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10398 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10399 return 0;
10400
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10401 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10402 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10403
10404 while ((len-- > 0) && (*ptr++ != '/'));
10405 if (len <= 0)
10406 return 0;
10407
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10408 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10409 smp->data.str.str = ptr;
10410 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10411
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10412 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10413 return 1;
10414}
10415
10416/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10417static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10418smp_fetch_stcode(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10419{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10420 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10421 char *ptr;
10422 int len;
10423
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10424 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10425
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10426 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10427 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10428 return 0;
10429
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10430 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10431 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10432
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]10433 smp->type = SMP_T_SINT;
10434 smp->data.sint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10435 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10436 return 1;
10437}
10438
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10439/* returns the longest available part of the body. This requires that the body
10440 * has been waited for using http-buffer-request.
10441 */
10442static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10443smp_fetch_body(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10444{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10445 struct http_txn *txn = smp->strm->txn;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10446 struct http_msg *msg;
10447 unsigned long len;
10448 unsigned long block1;
10449 char *body;
10450 struct chunk *temp;
10451
10452 CHECK_HTTP_MESSAGE_FIRST();
10453
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10454 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10455 msg = &txn->req;
10456 else
10457 msg = &txn->rsp;
10458
10459 len = http_body_bytes(msg);
10460 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
10461
10462 block1 = len;
10463 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
10464 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
10465
10466 if (block1 == len) {
10467 /* buffer is not wrapped (or empty) */
10468 smp->type = SMP_T_BIN;
10469 smp->data.str.str = body;
10470 smp->data.str.len = len;
10471 smp->flags = SMP_F_VOL_TEST | SMP_F_CONST;
10472 }
10473 else {
10474 /* buffer is wrapped, we need to defragment it */
10475 temp = get_trash_chunk();
10476 memcpy(temp->str, body, block1);
10477 memcpy(temp->str + block1, msg->chn->buf->data, len - block1);
10478 smp->type = SMP_T_BIN;
10479 smp->data.str.str = temp->str;
10480 smp->data.str.len = len;
10481 smp->flags = SMP_F_VOL_TEST;
10482 }
10483 return 1;
10484}
10485
10486
10487/* returns the available length of the body. This requires that the body
10488 * has been waited for using http-buffer-request.
10489 */
10490static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10491smp_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]10492{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10493 struct http_txn *txn = smp->strm->txn;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10494 struct http_msg *msg;
10495
10496 CHECK_HTTP_MESSAGE_FIRST();
10497
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10498 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10499 msg = &txn->req;
10500 else
10501 msg = &txn->rsp;
10502
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]10503 smp->type = SMP_T_SINT;
10504 smp->data.sint = http_body_bytes(msg);
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10505
10506 smp->flags = SMP_F_VOL_TEST;
10507 return 1;
10508}
10509
10510
10511/* returns the advertised length of the body, or the advertised size of the
10512 * chunks available in the buffer. This requires that the body has been waited
10513 * for using http-buffer-request.
10514 */
10515static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10516smp_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]10517{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10518 struct http_txn *txn = smp->strm->txn;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10519 struct http_msg *msg;
10520
10521 CHECK_HTTP_MESSAGE_FIRST();
10522
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10523 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10524 msg = &txn->req;
10525 else
10526 msg = &txn->rsp;
10527
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]10528 smp->type = SMP_T_SINT;
10529 smp->data.sint = msg->body_len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10530
10531 smp->flags = SMP_F_VOL_TEST;
10532 return 1;
10533}
10534
10535
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10536/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10537static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10538smp_fetch_url(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10539{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10540 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10541
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10542 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10543
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10544 txn = smp->strm->txn;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10545 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10546 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10547 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10548 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10549 return 1;
10550}
10551
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10552static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10553smp_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]10554{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10555 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10556 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10557
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10558 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10559
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10560 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10561 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]10562 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]10563 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10564
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10565 smp->type = SMP_T_IPV4;
10566 smp->data.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10567 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10568 return 1;
10569}
10570
10571static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10572smp_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]10573{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10574 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10575 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10576
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10577 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10578
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10579 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10580 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]10581 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
10582 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10583
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]10584 smp->type = SMP_T_SINT;
10585 smp->data.sint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]10586 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10587 return 1;
10588}
10589
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10590/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10591 * Accepts an optional argument of type string containing the header field name,
10592 * and an optional argument of type signed or unsigned integer to request an
10593 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10594 * headers are considered from the first one. It does not stop on commas and
10595 * returns full lines instead (useful for User-Agent or Date for example).
10596 */
10597static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10598smp_fetch_fhdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10599{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10600 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10601 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10602 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10603 int occ = 0;
10604 const char *name_str = NULL;
10605 int name_len = 0;
10606
10607 if (!ctx) {
10608 /* first call */
10609 ctx = &static_hdr_ctx;
10610 ctx->idx = 0;
10611 smp->ctx.a[0] = ctx;
10612 }
10613
10614 if (args) {
10615 if (args[0].type != ARGT_STR)
10616 return 0;
10617 name_str = args[0].data.str.str;
10618 name_len = args[0].data.str.len;
10619
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10620 if (args[1].type == ARGT_SINT)
10621 occ = args[1].data.sint;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10622 }
10623
10624 CHECK_HTTP_MESSAGE_FIRST();
10625
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10626 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10627 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]10628
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10629 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
10630 /* search for header from the beginning */
10631 ctx->idx = 0;
10632
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10633 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10634 /* no explicit occurrence and single fetch => last header by default */
10635 occ = -1;
10636
10637 if (!occ)
10638 /* prepare to report multiple occurrences for ACL fetches */
10639 smp->flags |= SMP_F_NOT_LAST;
10640
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10641 smp->type = SMP_T_STR;
10642 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10643 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.str.str, &smp->data.str.len))
10644 return 1;
10645
10646 smp->flags &= ~SMP_F_NOT_LAST;
10647 return 0;
10648}
10649
10650/* 6. Check on HTTP header count. The number of occurrences is returned.
10651 * Accepts exactly 1 argument of type string. It does not stop on commas and
10652 * returns full lines instead (useful for User-Agent or Date for example).
10653 */
10654static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10655smp_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]10656{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10657 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10658 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10659 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10660 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10661 const char *name = NULL;
10662 int len = 0;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10663
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10664 if (args && args->type == ARGT_STR) {
10665 name = args->data.str.str;
10666 len = args->data.str.len;
10667 }
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10668
10669 CHECK_HTTP_MESSAGE_FIRST();
10670
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10671 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10672 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]10673
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10674 ctx.idx = 0;
10675 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10676 while (http_find_full_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10677 cnt++;
10678
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]10679 smp->type = SMP_T_SINT;
10680 smp->data.sint = cnt;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10681 smp->flags = SMP_F_VOL_HDR;
10682 return 1;
10683}
10684
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10685static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10686smp_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]10687{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10688 struct hdr_idx *idx;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10689 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10690 const struct http_msg *msg;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10691 struct chunk *temp;
10692 char del = ',';
10693
10694 if (args && args->type == ARGT_STR)
10695 del = *args[0].data.str.str;
10696
10697 CHECK_HTTP_MESSAGE_FIRST();
10698
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10699 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10700 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]10701
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10702 temp = get_trash_chunk();
10703
10704 ctx.idx = 0;
10705 while (http_find_next_header(msg->chn->buf->p, idx, &ctx)) {
10706 if (temp->len)
10707 temp->str[temp->len++] = del;
10708 memcpy(temp->str + temp->len, ctx.line, ctx.del);
10709 temp->len += ctx.del;
10710 }
10711
10712 smp->type = SMP_T_STR;
10713 smp->data.str.str = temp->str;
10714 smp->data.str.len = temp->len;
10715 smp->flags = SMP_F_VOL_HDR;
10716 return 1;
10717}
10718
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10719/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10720 * Accepts an optional argument of type string containing the header field name,
10721 * and an optional argument of type signed or unsigned integer to request an
10722 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10723 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10724 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10725static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10726smp_fetch_hdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10727{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10728 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10729 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10730 const struct http_msg *msg;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10731 int occ = 0;
10732 const char *name_str = NULL;
10733 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10734
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10735 if (!ctx) {
10736 /* first call */
10737 ctx = &static_hdr_ctx;
10738 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]10739 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10740 }
10741
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10742 if (args) {
10743 if (args[0].type != ARGT_STR)
10744 return 0;
10745 name_str = args[0].data.str.str;
10746 name_len = args[0].data.str.len;
10747
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10748 if (args[1].type == ARGT_SINT)
10749 occ = args[1].data.sint;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10750 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10751
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10752 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10753
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10754 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10755 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]10756
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10757 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10758 /* search for header from the beginning */
10759 ctx->idx = 0;
10760
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10761 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10762 /* no explicit occurrence and single fetch => last header by default */
10763 occ = -1;
10764
10765 if (!occ)
10766 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10767 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]10768
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10769 smp->type = SMP_T_STR;
10770 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10771 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]10772 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10773
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10774 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10775 return 0;
10776}
10777
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10778/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10779 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10780 */
10781static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10782smp_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]10783{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10784 struct hdr_idx *idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10785 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10786 const struct http_msg *msg;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10787 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10788 const char *name = NULL;
10789 int len = 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10790
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10791 if (args && args->type == ARGT_STR) {
10792 name = args->data.str.str;
10793 len = args->data.str.len;
10794 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10795
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10796 CHECK_HTTP_MESSAGE_FIRST();
10797
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10798 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10799 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]10800
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10801 ctx.idx = 0;
10802 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10803 while (http_find_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10804 cnt++;
10805
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]10806 smp->type = SMP_T_SINT;
10807 smp->data.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10808 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10809 return 1;
10810}
10811
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10812/* Fetch an HTTP header's integer value. The integer value is returned. It
10813 * takes a mandatory argument of type string and an optional one of type int
10814 * to designate a specific occurrence. It returns an unsigned integer, which
10815 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10816 */
10817static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10818smp_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]10819{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10820 int ret = smp_fetch_hdr(args, smp, kw, private);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10821
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10822 if (ret > 0) {
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]10823 smp->type = SMP_T_SINT;
10824 smp->data.sint = strl2ic(smp->data.str.str, smp->data.str.len);
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10825 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10826
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10827 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10828}
10829
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10830/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
10831 * and an optional one of type int to designate a specific occurrence.
10832 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10833 */
10834static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10835smp_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]10836{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10837 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10838
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10839 while ((ret = smp_fetch_hdr(args, smp, kw, private)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10840 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
10841 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10842 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10843 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10844 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10845 if (smp->data.str.len < temp->size - 1) {
10846 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
10847 temp->str[smp->data.str.len] = '\0';
10848 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
10849 smp->type = SMP_T_IPV6;
10850 break;
10851 }
10852 }
10853 }
10854
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10855 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10856 if (!(smp->flags & SMP_F_NOT_LAST))
10857 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10858 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10859 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10860}
10861
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10862/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
10863 * the first '/' after the possible hostname, and ends before the possible '?'.
10864 */
10865static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10866smp_fetch_path(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10867{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10868 struct http_txn *txn;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10869 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10870
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10871 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10872
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10873 txn = smp->strm->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10874 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]10875 ptr = http_get_path(txn);
10876 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10877 return 0;
10878
10879 /* OK, we got the '/' ! */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10880 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10881 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10882
10883 while (ptr < end && *ptr != '?')
10884 ptr++;
10885
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10886 smp->data.str.len = ptr - smp->data.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10887 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10888 return 1;
10889}
10890
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10891/* This produces a concatenation of the first occurrence of the Host header
10892 * followed by the path component if it begins with a slash ('/'). This means
10893 * that '*' will not be added, resulting in exactly the first Host entry.
10894 * If no Host header is found, then the path is returned as-is. The returned
10895 * 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]10896 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10897 */
10898static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10899smp_fetch_base(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10900{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10901 struct http_txn *txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10902 char *ptr, *end, *beg;
10903 struct hdr_ctx ctx;
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10904 struct chunk *temp;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10905
10906 CHECK_HTTP_MESSAGE_FIRST();
10907
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10908 txn = smp->strm->txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10909 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10910 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]10911 return smp_fetch_path(args, smp, kw, private);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10912
10913 /* 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]10914 temp = get_trash_chunk();
10915 memcpy(temp->str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10916 smp->type = SMP_T_STR;
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10917 smp->data.str.str = temp->str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10918 smp->data.str.len = ctx.vlen;
10919
10920 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10921 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]10922 beg = http_get_path(txn);
10923 if (!beg)
10924 beg = end;
10925
10926 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10927
10928 if (beg < ptr && *beg == '/') {
10929 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
10930 smp->data.str.len += ptr - beg;
10931 }
10932
10933 smp->flags = SMP_F_VOL_1ST;
10934 return 1;
10935}
10936
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10937/* This produces a 32-bit hash of the concatenation of the first occurrence of
10938 * the Host header followed by the path component if it begins with a slash ('/').
10939 * This means that '*' will not be added, resulting in exactly the first Host
10940 * 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]10941 * is hashed using the path hash followed by a full avalanche hash and provides a
10942 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10943 * high-traffic sites without having to store whole paths.
10944 */
Thierry FOURNIER055b9d52014-07-15 16:11:07 +0200[diff] [blame]10945int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10946smp_fetch_base32(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10947{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10948 struct http_txn *txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10949 struct hdr_ctx ctx;
10950 unsigned int hash = 0;
10951 char *ptr, *beg, *end;
10952 int len;
10953
10954 CHECK_HTTP_MESSAGE_FIRST();
10955
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10956 txn = smp->strm->txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10957 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10958 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]10959 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10960 ptr = ctx.line + ctx.val;
10961 len = ctx.vlen;
10962 while (len--)
10963 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10964 }
10965
10966 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10967 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]10968 beg = http_get_path(txn);
10969 if (!beg)
10970 beg = end;
10971
10972 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10973
10974 if (beg < ptr && *beg == '/') {
10975 while (beg < ptr)
10976 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10977 }
10978 hash = full_hash(hash);
10979
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]10980 smp->type = SMP_T_SINT;
10981 smp->data.sint = hash;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10982 smp->flags = SMP_F_VOL_1ST;
10983 return 1;
10984}
10985
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10986/* 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]10987 * path as returned by smp_fetch_base32(). The idea is to have per-source and
10988 * per-path counters. The result is a binary block from 8 to 20 bytes depending
10989 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10990 * that in environments where IPv6 is insignificant, truncating the output to
10991 * 8 bytes would still work.
10992 */
10993static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10994smp_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]10995{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10996 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10997 struct connection *cli_conn = objt_conn(smp->sess->origin);
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10998
10999 if (!cli_conn)
11000 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]11001
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11002 if (!smp_fetch_base32(args, smp, kw, private))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]11003 return 0;
11004
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]11005 temp = get_trash_chunk();
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11006 *(unsigned int *)temp->str = htonl(smp->data.sint);
Willy Tarreau5ad6e1d2014-07-15 21:34:06 +0200[diff] [blame]11007 temp->len += sizeof(unsigned int);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]11008
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11009 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]11010 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11011 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]11012 temp->len += 4;
11013 break;
11014 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11015 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]11016 temp->len += 16;
11017 break;
11018 default:
11019 return 0;
11020 }
11021
11022 smp->data.str = *temp;
11023 smp->type = SMP_T_BIN;
11024 return 1;
11025}
11026
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]11027/* Extracts the query string, which comes after the question mark '?'. If no
11028 * question mark is found, nothing is returned. Otherwise it returns a sample
11029 * of type string carrying the whole query string.
11030 */
11031static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11032smp_fetch_query(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]11033{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11034 struct http_txn *txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]11035 char *ptr, *end;
11036
11037 CHECK_HTTP_MESSAGE_FIRST();
11038
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11039 txn = smp->strm->txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]11040 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
11041 end = ptr + txn->req.sl.rq.u_l;
11042
11043 /* look up the '?' */
11044 do {
11045 if (ptr == end)
11046 return 0;
11047 } while (*ptr++ != '?');
11048
11049 smp->type = SMP_T_STR;
11050 smp->data.str.str = ptr;
11051 smp->data.str.len = end - ptr;
11052 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
11053 return 1;
11054}
11055
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]11056static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11057smp_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]11058{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]11059 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
11060 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
11061 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]11062
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11063 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]11064
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11065 smp->type = SMP_T_BOOL;
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11066 smp->data.sint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]11067 return 1;
11068}
11069
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]11070/* return a valid test if the current request is the first one on the connection */
11071static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11072smp_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]11073{
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11074 smp->type = SMP_T_BOOL;
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11075 smp->data.sint = !(smp->strm->txn->flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]11076 return 1;
11077}
11078
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11079/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11080static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11081smp_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]11082{
11083
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11084 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11085 return 0;
11086
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]11087 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11088
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11089 if (!get_http_auth(smp->strm))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11090 return 0;
11091
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11092 smp->type = SMP_T_BOOL;
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11093 smp->data.sint = check_user(args->data.usr, smp->strm->txn->auth.user,
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11094 smp->strm->txn->auth.pass);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11095 return 1;
11096}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11097
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11098/* Accepts exactly 1 argument of type userlist */
11099static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11100smp_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]11101{
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11102 if (!args || args->type != ARGT_USR)
11103 return 0;
11104
11105 CHECK_HTTP_MESSAGE_FIRST();
11106
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11107 if (!get_http_auth(smp->strm))
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11108 return 0;
11109
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11110 /* if the user does not belong to the userlist or has a wrong password,
11111 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]11112 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11113 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11114 if (!check_user(args->data.usr, smp->strm->txn->auth.user,
11115 smp->strm->txn->auth.pass))
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]11116 return 0;
11117
11118 /* pat_match_auth() will need the user list */
11119 smp->ctx.a[0] = args->data.usr;
11120
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11121 smp->type = SMP_T_STR;
11122 smp->flags = SMP_F_CONST;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11123 smp->data.str.str = smp->strm->txn->auth.user;
11124 smp->data.str.len = strlen(smp->strm->txn->auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11125
11126 return 1;
11127}
11128
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11129/* Try to find the next occurrence of a cookie name in a cookie header value.
11130 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
11131 * the cookie value is returned into *value and *value_l, and the function
11132 * returns a pointer to the next pointer to search from if the value was found.
11133 * Otherwise if the cookie was not found, NULL is returned and neither value
11134 * nor value_l are touched. The input <hdr> string should first point to the
11135 * header's value, and the <hdr_end> pointer must point to the first character
11136 * not part of the value. <list> must be non-zero if value may represent a list
11137 * of values (cookie headers). This makes it faster to abort parsing when no
11138 * list is expected.
11139 */
11140static char *
11141extract_cookie_value(char *hdr, const char *hdr_end,
11142 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]11143 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11144{
11145 char *equal, *att_end, *att_beg, *val_beg, *val_end;
11146 char *next;
11147
11148 /* we search at least a cookie name followed by an equal, and more
11149 * generally something like this :
11150 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
11151 */
11152 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
11153 /* Iterate through all cookies on this line */
11154
11155 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
11156 att_beg++;
11157
11158 /* find att_end : this is the first character after the last non
11159 * space before the equal. It may be equal to hdr_end.
11160 */
11161 equal = att_end = att_beg;
11162
11163 while (equal < hdr_end) {
11164 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
11165 break;
11166 if (http_is_spht[(unsigned char)*equal++])
11167 continue;
11168 att_end = equal;
11169 }
11170
11171 /* here, <equal> points to '=', a delimitor or the end. <att_end>
11172 * is between <att_beg> and <equal>, both may be identical.
11173 */
11174
11175 /* look for end of cookie if there is an equal sign */
11176 if (equal < hdr_end && *equal == '=') {
11177 /* look for the beginning of the value */
11178 val_beg = equal + 1;
11179 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
11180 val_beg++;
11181
11182 /* find the end of the value, respecting quotes */
11183 next = find_cookie_value_end(val_beg, hdr_end);
11184
11185 /* make val_end point to the first white space or delimitor after the value */
11186 val_end = next;
11187 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
11188 val_end--;
11189 } else {
11190 val_beg = val_end = next = equal;
11191 }
11192
11193 /* We have nothing to do with attributes beginning with '$'. However,
11194 * they will automatically be removed if a header before them is removed,
11195 * since they're supposed to be linked together.
11196 */
11197 if (*att_beg == '$')
11198 continue;
11199
11200 /* Ignore cookies with no equal sign */
11201 if (equal == next)
11202 continue;
11203
11204 /* Now we have the cookie name between att_beg and att_end, and
11205 * its value between val_beg and val_end.
11206 */
11207
11208 if (att_end - att_beg == cookie_name_l &&
11209 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
11210 /* let's return this value and indicate where to go on from */
11211 *value = val_beg;
11212 *value_l = val_end - val_beg;
11213 return next + 1;
11214 }
11215
11216 /* Set-Cookie headers only have the name in the first attr=value part */
11217 if (!list)
11218 break;
11219 }
11220
11221 return NULL;
11222}
11223
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11224/* Fetch a captured HTTP request header. The index is the position of
11225 * the "capture" option in the configuration file
11226 */
11227static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11228smp_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]11229{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11230 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11231 int idx;
11232
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11233 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11234 return 0;
11235
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11236 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11237
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11238 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]11239 return 0;
11240
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11241 smp->type = SMP_T_STR;
11242 smp->flags |= SMP_F_CONST;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11243 smp->data.str.str = smp->strm->req_cap[idx];
11244 smp->data.str.len = strlen(smp->strm->req_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11245
11246 return 1;
11247}
11248
11249/* Fetch a captured HTTP response header. The index is the position of
11250 * the "capture" option in the configuration file
11251 */
11252static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11253smp_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]11254{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11255 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11256 int idx;
11257
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11258 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11259 return 0;
11260
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11261 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11262
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11263 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]11264 return 0;
11265
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11266 smp->type = SMP_T_STR;
11267 smp->flags |= SMP_F_CONST;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11268 smp->data.str.str = smp->strm->res_cap[idx];
11269 smp->data.str.len = strlen(smp->strm->res_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11270
11271 return 1;
11272}
11273
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11274/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
11275static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11276smp_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]11277{
11278 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11279 struct http_txn *txn = smp->strm->txn;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11280 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11281
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11282 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11283 return 0;
11284
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11285 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11286
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11287 while (*ptr != ' ' && *ptr != '\0') /* find first space */
11288 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11289
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11290 temp = get_trash_chunk();
11291 temp->str = txn->uri;
11292 temp->len = ptr - txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11293 smp->data.str = *temp;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11294 smp->type = SMP_T_STR;
11295 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11296
11297 return 1;
11298
11299}
11300
11301/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
11302static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11303smp_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]11304{
11305 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11306 struct http_txn *txn = smp->strm->txn;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11307 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11308
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11309 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11310 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11311
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11312 ptr = txn->uri;
11313
11314 while (*ptr != ' ' && *ptr != '\0') /* find first space */
11315 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11316
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11317 if (!*ptr)
11318 return 0;
11319
11320 ptr++; /* skip the space */
11321
11322 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11323 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11324 if (!ptr)
11325 return 0;
11326 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
11327 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11328
11329 smp->data.str = *temp;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11330 smp->data.str.len = ptr - temp->str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11331 smp->type = SMP_T_STR;
11332 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11333
11334 return 1;
11335}
11336
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11337/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
11338 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11339 */
11340static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11341smp_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]11342{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11343 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11344
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11345 if (!txn || txn->req.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11346 return 0;
11347
11348 if (txn->req.flags & HTTP_MSGF_VER_11)
11349 smp->data.str.str = "HTTP/1.1";
11350 else
11351 smp->data.str.str = "HTTP/1.0";
11352
11353 smp->data.str.len = 8;
11354 smp->type = SMP_T_STR;
11355 smp->flags = SMP_F_CONST;
11356 return 1;
11357
11358}
11359
11360/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
11361 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11362 */
11363static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11364smp_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]11365{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11366 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11367
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11368 if (!txn || txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11369 return 0;
11370
11371 if (txn->rsp.flags & HTTP_MSGF_VER_11)
11372 smp->data.str.str = "HTTP/1.1";
11373 else
11374 smp->data.str.str = "HTTP/1.0";
11375
11376 smp->data.str.len = 8;
11377 smp->type = SMP_T_STR;
11378 smp->flags = SMP_F_CONST;
11379 return 1;
11380
11381}
11382
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11383
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11384/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11385 * 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]11386 * 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]11387 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11388 * 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]11389 * Accepts exactly 1 argument of type string. If the input options indicate
11390 * that no iterating is desired, then only last value is fetched if any.
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]11391 * The returned sample is of type CSTR. Can be used to parse cookies in other
11392 * files.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11393 */
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11394int 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]11395{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11396 struct http_txn *txn;
11397 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11398 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11399 const struct http_msg *msg;
11400 const char *hdr_name;
11401 int hdr_name_len;
11402 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11403 int occ = 0;
11404 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11405
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11406 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11407 return 0;
11408
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11409 if (!ctx) {
11410 /* first call */
11411 ctx = &static_hdr_ctx;
11412 ctx->idx = 0;
11413 smp->ctx.a[2] = ctx;
11414 }
11415
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11416 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11417
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11418 txn = smp->strm->txn;
11419 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11420
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11421 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11422 msg = &txn->req;
11423 hdr_name = "Cookie";
11424 hdr_name_len = 6;
11425 } else {
11426 msg = &txn->rsp;
11427 hdr_name = "Set-Cookie";
11428 hdr_name_len = 10;
11429 }
11430
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11431 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11432 /* no explicit occurrence and single fetch => last cookie by default */
11433 occ = -1;
11434
11435 /* OK so basically here, either we want only one value and it's the
11436 * last one, or we want to iterate over all of them and we fetch the
11437 * next one.
11438 */
11439
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11440 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11441 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11442 /* search for the header from the beginning, we must first initialize
11443 * the search parameters.
11444 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11445 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11446 ctx->idx = 0;
11447 }
11448
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11449 smp->flags |= SMP_F_VOL_HDR;
11450
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11451 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11452 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
11453 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11454 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
11455 goto out;
11456
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11457 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11458 continue;
11459
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11460 smp->ctx.a[0] = ctx->line + ctx->val;
11461 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11462 }
11463
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11464 smp->type = SMP_T_STR;
11465 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11466 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]11467 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11468 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11469 &smp->data.str.str,
11470 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11471 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11472 found = 1;
11473 if (occ >= 0) {
11474 /* one value was returned into smp->data.str.{str,len} */
11475 smp->flags |= SMP_F_NOT_LAST;
11476 return 1;
11477 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11478 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11479 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11480 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11481 /* all cookie headers and values were scanned. If we're looking for the
11482 * last occurrence, we may return it now.
11483 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11484 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11485 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11486 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11487}
11488
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11489/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11490 * 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]11491 * multiple cookies may be parsed on the same line. The returned sample is of
11492 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11493 */
11494static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11495smp_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]11496{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11497 struct http_txn *txn;
11498 struct hdr_idx *idx;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11499 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11500 const struct http_msg *msg;
11501 const char *hdr_name;
11502 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11503 int cnt;
11504 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11505 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11506
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11507 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11508 return 0;
11509
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11510 CHECK_HTTP_MESSAGE_FIRST();
11511
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11512 txn = smp->strm->txn;
11513 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11514
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11515 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11516 msg = &txn->req;
11517 hdr_name = "Cookie";
11518 hdr_name_len = 6;
11519 } else {
11520 msg = &txn->rsp;
11521 hdr_name = "Set-Cookie";
11522 hdr_name_len = 10;
11523 }
11524
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11525 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]11526 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11527 ctx.idx = 0;
11528 cnt = 0;
11529
11530 while (1) {
11531 /* Note: val_beg == NULL every time we need to fetch a new header */
11532 if (!val_beg) {
11533 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
11534 break;
11535
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11536 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11537 continue;
11538
11539 val_beg = ctx.line + ctx.val;
11540 val_end = val_beg + ctx.vlen;
11541 }
11542
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11543 smp->type = SMP_T_STR;
11544 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11545 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11546 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11547 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11548 &smp->data.str.str,
11549 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11550 cnt++;
11551 }
11552 }
11553
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11554 smp->type = SMP_T_SINT;
11555 smp->data.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11556 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11557 return 1;
11558}
11559
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11560/* Fetch an cookie's integer value. The integer value is returned. It
11561 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
11562 */
11563static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11564smp_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]11565{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11566 int ret = smp_fetch_cookie(args, smp, kw, private);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11567
11568 if (ret > 0) {
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11569 smp->type = SMP_T_SINT;
11570 smp->data.sint = strl2ic(smp->data.str.str, smp->data.str.len);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11571 }
11572
11573 return ret;
11574}
11575
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11576/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]11577/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11578/************************************************************************/
11579
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11580/*
11581 * Given a path string and its length, find the position of beginning of the
11582 * query string. Returns NULL if no query string is found in the path.
11583 *
11584 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
11585 *
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11586 * find_query_string(path, n, '?') points to "yo=mama;ye=daddy" string.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11587 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11588static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11589{
11590 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]11591
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11592 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11593 return p ? p + 1 : NULL;
11594}
11595
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11596static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11597{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11598 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11599}
11600
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11601/* after increasing a pointer value, it can exceed the first buffer
11602 * size. This function transform the value of <ptr> according with
11603 * the expected position. <chunks> is an array of the one or two
11604 * avalaible chunks. The first value is the start of the first chunk,
11605 * the second value if the end+1 of the first chunks. The third value
11606 * is NULL or the start of the second chunk and the fourth value is
11607 * the end+1 of the second chunk. The function returns 1 if does a
11608 * wrap, else returns 0.
11609 */
11610static inline int fix_pointer_if_wrap(const char **chunks, const char **ptr)
11611{
11612 if (*ptr < chunks[1])
11613 return 0;
11614 if (!chunks[2])
11615 return 0;
11616 *ptr = chunks[2] + ( *ptr - chunks[1] );
11617 return 1;
11618}
11619
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11620/*
11621 * Given a url parameter, find the starting position of the first occurence,
11622 * or NULL if the parameter is not found.
11623 *
11624 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
11625 * the function will return query_string+8.
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11626 *
11627 * Warning:this function returns a pointer that can be point to the first chunk
11628 * or the second chunk. The caller must be check the position before using the
11629 * result.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11630 */
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11631static const char *
11632find_url_param_pos(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11633 const char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11634 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11635{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11636 const char *pos, *last, *equal;
11637 const char **bufs = chunks;
11638 int l1, l2;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11639
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11640
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11641 pos = bufs[0];
11642 last = bufs[1];
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11643 while (pos <= last) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11644 /* Check the equal. */
11645 equal = pos + url_param_name_l;
11646 if (fix_pointer_if_wrap(chunks, &equal)) {
11647 if (equal >= chunks[3])
11648 return NULL;
11649 } else {
11650 if (equal >= chunks[1])
11651 return NULL;
11652 }
11653 if (*equal == '=') {
11654 if (pos + url_param_name_l > last) {
11655 /* process wrap case, we detect a wrap. In this case, the
11656 * comparison is performed in two parts.
11657 */
11658
11659 /* This is the end, we dont have any other chunk. */
11660 if (bufs != chunks || !bufs[2])
11661 return NULL;
11662
11663 /* Compute the length of each part of the comparison. */
11664 l1 = last - pos;
11665 l2 = url_param_name_l - l1;
11666
11667 /* The second buffer is too short to contain the compared string. */
11668 if (bufs[2] + l2 > bufs[3])
11669 return NULL;
11670
11671 if (memcmp(pos, url_param_name, l1) == 0 &&
11672 memcmp(bufs[2], url_param_name+l1, l2) == 0)
11673 return pos;
11674
11675 /* Perform wrapping and jump the string who fail the comparison. */
11676 bufs += 2;
11677 pos = bufs[0] + l2;
11678 last = bufs[1];
11679
11680 } else {
11681 /* process a simple comparison. */
11682 if (memcmp(pos, url_param_name, url_param_name_l) == 0) {
11683 return pos; }
11684 pos += url_param_name_l + 1;
11685 if (fix_pointer_if_wrap(chunks, &pos))
11686 last = bufs[2];
11687 }
11688 }
11689
11690 while (1) {
11691 /* Look for the next delimiter. */
11692 while (pos <= last && !is_param_delimiter(*pos, delim))
11693 pos++;
11694 if (pos < last)
11695 break;
11696 /* process buffer wrapping. */
11697 if (bufs != chunks || !bufs[2])
11698 return NULL;
11699 bufs += 2;
11700 pos = bufs[0];
11701 last = bufs[1];
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11702 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11703 pos++;
11704 }
11705 return NULL;
11706}
11707
11708/*
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11709 * Given a url parameter name and a query string, returns its value and size
11710 * into *value and *value_l respectively, and returns non-zero. An empty
11711 * url_param_name matches the first available parameter. If the parameter is
11712 * not found, zero is returned and value/value_l are not touched.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11713 */
11714static int
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11715find_next_url_param(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11716 const char* url_param_name, size_t url_param_name_l,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11717 const char **vstart, const char **vend, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11718{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11719 const char *arg_start, *qs_end;
11720 const char *value_start, *value_end;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11721
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11722 arg_start = chunks[0];
11723 qs_end = chunks[1];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11724 if (url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11725 /* Looks for an argument name. */
11726 arg_start = find_url_param_pos(chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11727 url_param_name, url_param_name_l,
11728 delim);
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11729 /* Check for wrapping. */
11730 if (arg_start > qs_end)
11731 qs_end = chunks[3];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11732 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11733 if (!arg_start)
11734 return 0;
11735
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11736 if (!url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11737 while (1) {
11738 /* looks for the first argument. */
11739 value_start = memchr(arg_start, '=', qs_end - arg_start);
11740 if (!value_start) {
11741
11742 /* Check for wrapping. */
11743 if (arg_start >= chunks[0] &&
11744 arg_start <= chunks[1] &&
11745 chunks[2]) {
11746 arg_start = chunks[2];
11747 qs_end = chunks[3];
11748 continue;
11749 }
11750 return 0;
11751 }
11752 break;
11753 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11754 value_start++;
11755 }
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11756 else {
11757 /* Jump the argument length. */
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11758 value_start = arg_start + url_param_name_l + 1;
11759
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11760 /* Check for pointer wrapping. */
11761 if (fix_pointer_if_wrap(chunks, &value_start)) {
11762 /* Update the end pointer. */
11763 qs_end = chunks[3];
11764
11765 /* Check for overflow. */
11766 if (value_start > qs_end)
11767 return 0;
11768 }
11769 }
11770
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11771 value_end = value_start;
11772
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11773 while (1) {
11774 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
11775 value_end++;
11776 if (value_end < qs_end)
11777 break;
11778 /* process buffer wrapping. */
11779 if (value_end >= chunks[0] &&
11780 value_end <= chunks[1] &&
11781 chunks[2]) {
11782 value_end = chunks[2];
11783 qs_end = chunks[3];
11784 continue;
11785 }
11786 break;
11787 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11788
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11789 *vstart = value_start;
11790 *vend = value_end;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]11791 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11792}
11793
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11794/* This scans a URL-encoded query string. It takes an optionally wrapping
11795 * string whose first contigous chunk has its beginning in ctx->a[0] and end
11796 * in ctx->a[1], and the optional second part in (ctx->a[2]..ctx->a[3]). The
11797 * pointers are updated for next iteration before leaving.
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11798 */
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11799static int
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11800smp_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]11801{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11802 const char *vstart, *vend;
11803 struct chunk *temp;
11804 const char **chunks = (const char **)smp->ctx.a;
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11805
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11806 if (!find_next_url_param(chunks,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11807 name, name_len,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11808 &vstart, &vend,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11809 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11810 return 0;
11811
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11812 /* Create sample. If the value is contiguous, return the pointer as CONST,
11813 * if the value is wrapped, copy-it in a buffer.
11814 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11815 smp->type = SMP_T_STR;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11816 if (chunks[2] &&
11817 vstart >= chunks[0] && vstart <= chunks[1] &&
11818 vend >= chunks[2] && vend <= chunks[3]) {
11819 /* Wrapped case. */
11820 temp = get_trash_chunk();
11821 memcpy(temp->str, vstart, chunks[1] - vstart);
11822 memcpy(temp->str + ( chunks[1] - vstart ), chunks[2], vend - chunks[2]);
11823 smp->data.str.str = temp->str;
11824 smp->data.str.len = ( chunks[1] - vstart ) + ( vend - chunks[2] );
11825 } else {
11826 /* Contiguous case. */
11827 smp->data.str.str = (char *)vstart;
11828 smp->data.str.len = vend - vstart;
11829 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
11830 }
11831
11832 /* Update context, check wrapping. */
11833 chunks[0] = vend;
11834 if (chunks[2] && vend >= chunks[2] && vend <= chunks[3]) {
11835 chunks[1] = chunks[3];
11836 chunks[2] = NULL;
11837 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11838
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11839 if (chunks[0] < chunks[1])
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11840 smp->flags |= SMP_F_NOT_LAST;
11841
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11842 return 1;
11843}
11844
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11845/* This function iterates over each parameter of the query string. It uses
11846 * 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]11847 * parameter. Since it uses smp_fetch_param(), ctx->a[2..3] are both NULL.
11848 * An optional parameter name is passed in args[0], otherwise any parameter is
11849 * considered. It supports an optional delimiter argument for the beginning of
11850 * the string in args[1], which defaults to "?".
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11851 */
11852static int
11853smp_fetch_url_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11854{
11855 struct http_msg *msg;
11856 char delim = '?';
11857 const char *name;
11858 int name_len;
11859
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11860 if (!args ||
11861 (args[0].type && args[0].type != ARGT_STR) ||
11862 (args[1].type && args[1].type != ARGT_STR))
11863 return 0;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11864
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11865 name = "";
11866 name_len = 0;
11867 if (args->type == ARGT_STR) {
11868 name = args->data.str.str;
11869 name_len = args->data.str.len;
11870 }
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11871
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11872 if (args[1].type)
11873 delim = *args[1].data.str.str;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11874
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11875 if (!smp->ctx.a[0]) { // first call, find the query string
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11876 CHECK_HTTP_MESSAGE_FIRST();
11877
11878 msg = &smp->strm->txn->req;
11879
11880 smp->ctx.a[0] = find_param_list(msg->chn->buf->p + msg->sl.rq.u,
11881 msg->sl.rq.u_l, delim);
11882 if (!smp->ctx.a[0])
11883 return 0;
11884
11885 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]11886
11887 /* Assume that the context is filled with NULL pointer
11888 * before the first call.
11889 * smp->ctx.a[2] = NULL;
11890 * smp->ctx.a[3] = NULL;
11891 */
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11892 }
11893
11894 return smp_fetch_param(delim, name, name_len, args, smp, kw, private);
11895}
11896
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11897/* This function iterates over each parameter of the body. This requires
11898 * that the body has been waited for using http-buffer-request. It uses
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11899 * ctx->a[0] and ctx->a[1] to store the beginning and end of the first
11900 * contigous part of the body, and optionally ctx->a[2..3] to reference the
11901 * optional second part if the body wraps at the end of the buffer. An optional
11902 * parameter name is passed in args[0], otherwise any parameter is considered.
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11903 */
11904static int
11905smp_fetch_body_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11906{
11907 struct http_txn *txn = smp->strm->txn;
11908 struct http_msg *msg;
11909 unsigned long len;
11910 unsigned long block1;
11911 char *body;
11912 const char *name;
11913 int name_len;
11914
11915 if (!args || (args[0].type && args[0].type != ARGT_STR))
11916 return 0;
11917
11918 name = "";
11919 name_len = 0;
11920 if (args[0].type == ARGT_STR) {
11921 name = args[0].data.str.str;
11922 name_len = args[0].data.str.len;
11923 }
11924
11925 if (!smp->ctx.a[0]) { // first call, find the query string
11926 CHECK_HTTP_MESSAGE_FIRST();
11927
11928 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
11929 msg = &txn->req;
11930 else
11931 msg = &txn->rsp;
11932
11933 len = http_body_bytes(msg);
11934 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
11935
11936 block1 = len;
11937 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
11938 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
11939
11940 if (block1 == len) {
11941 /* buffer is not wrapped (or empty) */
11942 smp->ctx.a[0] = body;
11943 smp->ctx.a[1] = body + len;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11944
11945 /* Assume that the context is filled with NULL pointer
11946 * before the first call.
11947 * smp->ctx.a[2] = NULL;
11948 * smp->ctx.a[3] = NULL;
11949 */
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11950 }
11951 else {
11952 /* buffer is wrapped, we need to defragment it */
11953 smp->ctx.a[0] = body;
11954 smp->ctx.a[1] = body + block1;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11955 smp->ctx.a[2] = msg->chn->buf->data;
11956 smp->ctx.a[3] = msg->chn->buf->data + ( len - block1 );
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11957 }
11958 }
11959 return smp_fetch_param('&', name, name_len, args, smp, kw, private);
11960}
11961
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11962/* Return the signed integer value for the specified url parameter (see url_param
11963 * above).
11964 */
11965static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11966smp_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]11967{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11968 int ret = smp_fetch_url_param(args, smp, kw, private);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11969
11970 if (ret > 0) {
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11971 smp->type = SMP_T_SINT;
11972 smp->data.sint = strl2ic(smp->data.str.str, smp->data.str.len);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11973 }
11974
11975 return ret;
11976}
11977
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11978/* This produces a 32-bit hash of the concatenation of the first occurrence of
11979 * the Host header followed by the path component if it begins with a slash ('/').
11980 * This means that '*' will not be added, resulting in exactly the first Host
11981 * entry. If no Host header is found, then the path is used. The resulting value
11982 * is hashed using the url hash followed by a full avalanche hash and provides a
11983 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
11984 * high-traffic sites without having to store whole paths.
11985 * this differs from the base32 functions in that it includes the url parameters
11986 * as well as the path
11987 */
11988static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11989smp_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]11990{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11991 struct http_txn *txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11992 struct hdr_ctx ctx;
11993 unsigned int hash = 0;
11994 char *ptr, *beg, *end;
11995 int len;
11996
11997 CHECK_HTTP_MESSAGE_FIRST();
11998
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11999 txn = smp->strm->txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12000 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]12001 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]12002 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
12003 ptr = ctx.line + ctx.val;
12004 len = ctx.vlen;
12005 while (len--)
12006 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
12007 }
12008
12009 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]12010 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]12011 beg = http_get_path(txn);
12012 if (!beg)
12013 beg = end;
12014
12015 for (ptr = beg; ptr < end ; ptr++);
12016
12017 if (beg < ptr && *beg == '/') {
12018 while (beg < ptr)
12019 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
12020 }
12021 hash = full_hash(hash);
12022
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12023 smp->type = SMP_T_SINT;
12024 smp->data.sint = hash;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12025 smp->flags = SMP_F_VOL_1ST;
12026 return 1;
12027}
12028
12029/* This concatenates the source address with the 32-bit hash of the Host and
12030 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
12031 * per-url counters. The result is a binary block from 8 to 20 bytes depending
12032 * on the source address length. The URL hash is stored before the address so
12033 * that in environments where IPv6 is insignificant, truncating the output to
12034 * 8 bytes would still work.
12035 */
12036static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]12037smp_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]12038{
12039 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12040 struct connection *cli_conn = objt_conn(smp->sess->origin);
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12041 unsigned int hash;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12042
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]12043 if (!smp_fetch_url32(args, smp, kw, private))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12044 return 0;
12045
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12046 /* The returned hash is a 32 bytes integer. */
12047 hash = smp->data.sint;
12048
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12049 temp = get_trash_chunk();
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12050 memcpy(temp->str + temp->len, &hash, sizeof(hash));
12051 temp->len += sizeof(hash);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12052
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]12053 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12054 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]12055 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]12056 temp->len += 4;
12057 break;
12058 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]12059 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]12060 temp->len += 16;
12061 break;
12062 default:
12063 return 0;
12064 }
12065
12066 smp->data.str = *temp;
12067 smp->type = SMP_T_BIN;
12068 return 1;
12069}
12070
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]12071/* This function is used to validate the arguments passed to any "hdr" fetch
12072 * keyword. These keywords support an optional positive or negative occurrence
12073 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
12074 * is assumed that the types are already the correct ones. Returns 0 on error,
12075 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
12076 * error message in case of error, that the caller is responsible for freeing.
12077 * The initial location must either be freeable or NULL.
12078 */
Thierry FOURNIER49f45af2014-12-08 19:50:43 +0100[diff] [blame]12079int val_hdr(struct arg *arg, char **err_msg)
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]12080{
12081 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]12082 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]12083 return 0;
12084 }
12085 return 1;
12086}
12087
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12088/* takes an UINT value on input supposed to represent the time since EPOCH,
12089 * adds an optional offset found in args[0] and emits a string representing
12090 * the date in RFC-1123/5322 format.
12091 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12092static int sample_conv_http_date(const struct arg *args, struct sample *smp, void *private)
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12093{
12094 const char day[7][4] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
12095 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
12096 struct chunk *temp;
12097 struct tm *tm;
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12098 /* With high numbers, the date returned can be negative, the 55 bits mask prevent this. */
12099 time_t curr_date = smp->data.sint & 0x007fffffffffffffLL;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12100
12101 /* add offset */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12102 if (args && (args[0].type == ARGT_SINT))
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12103 curr_date += args[0].data.sint;
12104
12105 tm = gmtime(&curr_date);
Thierry FOURNIERfac9ccf2015-07-08 00:15:20 +0200[diff] [blame]12106 if (!tm)
12107 return 0;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12108
12109 temp = get_trash_chunk();
12110 temp->len = snprintf(temp->str, temp->size - temp->len,
12111 "%s, %02d %s %04d %02d:%02d:%02d GMT",
12112 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
12113 tm->tm_hour, tm->tm_min, tm->tm_sec);
12114
12115 smp->data.str = *temp;
12116 smp->type = SMP_T_STR;
12117 return 1;
12118}
12119
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12120/* Match language range with language tag. RFC2616 14.4:
12121 *
12122 * A language-range matches a language-tag if it exactly equals
12123 * the tag, or if it exactly equals a prefix of the tag such
12124 * that the first tag character following the prefix is "-".
12125 *
12126 * Return 1 if the strings match, else return 0.
12127 */
12128static inline int language_range_match(const char *range, int range_len,
12129 const char *tag, int tag_len)
12130{
12131 const char *end = range + range_len;
12132 const char *tend = tag + tag_len;
12133 while (range < end) {
12134 if (*range == '-' && tag == tend)
12135 return 1;
12136 if (*range != *tag || tag == tend)
12137 return 0;
12138 range++;
12139 tag++;
12140 }
12141 /* Return true only if the last char of the tag is matched. */
12142 return tag == tend;
12143}
12144
12145/* Arguments: The list of expected value, the number of parts returned and the separator */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12146static int sample_conv_q_prefered(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12147{
12148 const char *al = smp->data.str.str;
12149 const char *end = al + smp->data.str.len;
12150 const char *token;
12151 int toklen;
12152 int qvalue;
12153 const char *str;
12154 const char *w;
12155 int best_q = 0;
12156
12157 /* Set the constant to the sample, because the output of the
12158 * function will be peek in the constant configuration string.
12159 */
12160 smp->flags |= SMP_F_CONST;
12161 smp->data.str.size = 0;
12162 smp->data.str.str = "";
12163 smp->data.str.len = 0;
12164
12165 /* Parse the accept language */
12166 while (1) {
12167
12168 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12169 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12170 al++;
12171 if (al >= end)
12172 break;
12173
12174 /* Start of the fisrt word. */
12175 token = al;
12176
12177 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12178 while (al < end && *al != ';' && *al != ',' && !isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12179 al++;
12180 if (al == token)
12181 goto expect_comma;
12182
12183 /* Length of the token. */
12184 toklen = al - token;
12185 qvalue = 1000;
12186
12187 /* Check if the token exists in the list. If the token not exists,
12188 * jump to the next token.
12189 */
12190 str = args[0].data.str.str;
12191 w = str;
12192 while (1) {
12193 if (*str == ';' || *str == '\0') {
12194 if (language_range_match(token, toklen, w, str-w))
12195 goto look_for_q;
12196 if (*str == '\0')
12197 goto expect_comma;
12198 w = str + 1;
12199 }
12200 str++;
12201 }
12202 goto expect_comma;
12203
12204look_for_q:
12205
12206 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12207 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12208 al++;
12209 if (al >= end)
12210 goto process_value;
12211
12212 /* If ',' is found, process the result */
12213 if (*al == ',')
12214 goto process_value;
12215
12216 /* If the character is different from ';', look
12217 * for the end of the header part in best effort.
12218 */
12219 if (*al != ';')
12220 goto expect_comma;
12221
12222 /* Assumes that the char is ';', now expect "q=". */
12223 al++;
12224
12225 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12226 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12227 al++;
12228 if (al >= end)
12229 goto process_value;
12230
12231 /* Expect 'q'. If no 'q', continue in best effort */
12232 if (*al != 'q')
12233 goto process_value;
12234 al++;
12235
12236 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12237 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12238 al++;
12239 if (al >= end)
12240 goto process_value;
12241
12242 /* Expect '='. If no '=', continue in best effort */
12243 if (*al != '=')
12244 goto process_value;
12245 al++;
12246
12247 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12248 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12249 al++;
12250 if (al >= end)
12251 goto process_value;
12252
12253 /* Parse the q value. */
12254 qvalue = parse_qvalue(al, &al);
12255
12256process_value:
12257
12258 /* If the new q value is the best q value, then store the associated
12259 * language in the response. If qvalue is the biggest value (1000),
12260 * break the process.
12261 */
12262 if (qvalue > best_q) {
12263 smp->data.str.str = (char *)w;
12264 smp->data.str.len = str - w;
12265 if (qvalue >= 1000)
12266 break;
12267 best_q = qvalue;
12268 }
12269
12270expect_comma:
12271
12272 /* Expect comma or end. If the end is detected, quit the loop. */
12273 while (al < end && *al != ',')
12274 al++;
12275 if (al >= end)
12276 break;
12277
12278 /* Comma is found, jump it and restart the analyzer. */
12279 al++;
12280 }
12281
12282 /* Set default value if required. */
12283 if (smp->data.str.len == 0 && args[1].type == ARGT_STR) {
12284 smp->data.str.str = args[1].data.str.str;
12285 smp->data.str.len = args[1].data.str.len;
12286 }
12287
12288 /* Return true only if a matching language was found. */
12289 return smp->data.str.len != 0;
12290}
12291
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12292/* This fetch url-decode any input string. */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12293static int sample_conv_url_dec(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12294{
12295 /* If the constant flag is set or if not size is avalaible at
12296 * the end of the buffer, copy the string in other buffer
12297 * before decoding.
12298 */
12299 if (smp->flags & SMP_F_CONST || smp->data.str.size <= smp->data.str.len) {
12300 struct chunk *str = get_trash_chunk();
12301 memcpy(str->str, smp->data.str.str, smp->data.str.len);
12302 smp->data.str.str = str->str;
12303 smp->data.str.size = str->size;
12304 smp->flags &= ~SMP_F_CONST;
12305 }
12306
12307 /* Add final \0 required by url_decode(), and convert the input string. */
12308 smp->data.str.str[smp->data.str.len] = '\0';
12309 smp->data.str.len = url_decode(smp->data.str.str);
12310 return 1;
12311}
12312
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12313static int smp_conv_req_capture(const struct arg *args, struct sample *smp, void *private)
12314{
12315 struct proxy *fe = strm_fe(smp->strm);
12316 int idx, i;
12317 struct cap_hdr *hdr;
12318 int len;
12319
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12320 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12321 return 0;
12322
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12323 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12324
12325 /* Check the availibity of the capture id. */
12326 if (idx > fe->nb_req_cap - 1)
12327 return 0;
12328
12329 /* Look for the original configuration. */
12330 for (hdr = fe->req_cap, i = fe->nb_req_cap - 1;
12331 hdr != NULL && i != idx ;
12332 i--, hdr = hdr->next);
12333 if (!hdr)
12334 return 0;
12335
12336 /* check for the memory allocation */
12337 if (smp->strm->req_cap[hdr->index] == NULL)
12338 smp->strm->req_cap[hdr->index] = pool_alloc2(hdr->pool);
12339 if (smp->strm->req_cap[hdr->index] == NULL)
12340 return 0;
12341
12342 /* Check length. */
12343 len = smp->data.str.len;
12344 if (len > hdr->len)
12345 len = hdr->len;
12346
12347 /* Capture input data. */
12348 memcpy(smp->strm->req_cap[idx], smp->data.str.str, len);
12349 smp->strm->req_cap[idx][len] = '\0';
12350
12351 return 1;
12352}
12353
12354static int smp_conv_res_capture(const struct arg *args, struct sample *smp, void *private)
12355{
12356 struct proxy *fe = strm_fe(smp->strm);
12357 int idx, i;
12358 struct cap_hdr *hdr;
12359 int len;
12360
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12361 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12362 return 0;
12363
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12364 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12365
12366 /* Check the availibity of the capture id. */
12367 if (idx > fe->nb_rsp_cap - 1)
12368 return 0;
12369
12370 /* Look for the original configuration. */
12371 for (hdr = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
12372 hdr != NULL && i != idx ;
12373 i--, hdr = hdr->next);
12374 if (!hdr)
12375 return 0;
12376
12377 /* check for the memory allocation */
12378 if (smp->strm->res_cap[hdr->index] == NULL)
12379 smp->strm->res_cap[hdr->index] = pool_alloc2(hdr->pool);
12380 if (smp->strm->res_cap[hdr->index] == NULL)
12381 return 0;
12382
12383 /* Check length. */
12384 len = smp->data.str.len;
12385 if (len > hdr->len)
12386 len = hdr->len;
12387
12388 /* Capture input data. */
12389 memcpy(smp->strm->res_cap[idx], smp->data.str.str, len);
12390 smp->strm->res_cap[idx][len] = '\0';
12391
12392 return 1;
12393}
12394
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12395/* This function executes one of the set-{method,path,query,uri} actions. It
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12396 * takes the string from the variable 'replace' with length 'len', then modifies
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12397 * the relevant part of the request line accordingly. Then it updates various
12398 * pointers to the next elements which were moved, and the total buffer length.
12399 * It finds the action to be performed in p[2], previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12400 * parse_set_req_line(). It returns 0 in case of success, -1 in case of internal
12401 * error, though this can be revisited when this code is finally exploited.
12402 *
12403 * 'action' can be '0' to replace method, '1' to replace path, '2' to replace
12404 * query string and 3 to replace uri.
12405 *
12406 * In query string case, the mark question '?' must be set at the start of the
12407 * string by the caller, event if the replacement query string is empty.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12408 */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12409int http_replace_req_line(int action, const char *replace, int len,
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12410 struct proxy *px, struct stream *s)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12411{
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12412 struct http_txn *txn = s->txn;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12413 char *cur_ptr, *cur_end;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12414 int offset = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12415 int delta;
12416
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12417 switch (action) {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12418 case 0: // method
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12419 cur_ptr = s->req.buf->p;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12420 cur_end = cur_ptr + txn->req.sl.rq.m_l;
12421
12422 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12423 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12424 txn->req.sl.rq.m_l += delta;
12425 txn->req.sl.rq.u += delta;
12426 txn->req.sl.rq.v += delta;
12427 break;
12428
12429 case 1: // path
12430 cur_ptr = http_get_path(txn);
12431 if (!cur_ptr)
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12432 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12433
12434 cur_end = cur_ptr;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12435 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]12436 cur_end++;
12437
12438 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12439 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12440 txn->req.sl.rq.u_l += delta;
12441 txn->req.sl.rq.v += delta;
12442 break;
12443
12444 case 2: // query
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12445 offset = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12446 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12447 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12448 while (cur_ptr < cur_end && *cur_ptr != '?')
12449 cur_ptr++;
12450
12451 /* skip the question mark or indicate that we must insert it
12452 * (but only if the format string is not empty then).
12453 */
12454 if (cur_ptr < cur_end)
12455 cur_ptr++;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12456 else if (len > 1)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12457 offset = 0;
12458
12459 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12460 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12461 txn->req.sl.rq.u_l += delta;
12462 txn->req.sl.rq.v += delta;
12463 break;
12464
12465 case 3: // uri
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12466 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12467 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12468
12469 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12470 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12471 txn->req.sl.rq.u_l += delta;
12472 txn->req.sl.rq.v += delta;
12473 break;
12474
12475 default:
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12476 return -1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12477 }
12478
12479 /* commit changes and adjust end of message */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12480 delta = buffer_replace2(s->req.buf, cur_ptr, cur_end, replace + offset, len - offset);
Thierry FOURNIER7f6192c2015-04-26 18:01:40 +0200[diff] [blame]12481 txn->req.sl.rq.l += delta;
12482 txn->hdr_idx.v[0].len += delta;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12483 http_msg_move_end(&txn->req, delta);
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12484 return 0;
12485}
12486
12487/* This function executes one of the set-{method,path,query,uri} actions. It
12488 * builds a string in the trash from the specified format string. It finds
12489 * the action to be performed in p[2], previously filled by function
12490 * parse_set_req_line(). The replacement action is excuted by the function
12491 * http_action_set_req_line_exec(). It always returns 1. If an error occurs
12492 * the action is canceled, but the rule processing continue.
12493 */
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12494int 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]12495{
12496 chunk_reset(&trash);
12497
12498 /* If we have to create a query string, prepare a '?'. */
12499 if (*(int *)&rule->arg.act.p[2] == 2)
12500 trash.str[trash.len++] = '?';
12501 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, (struct list *)&rule->arg.act.p[0]);
12502
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12503 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]12504 return 1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12505}
12506
12507/* parse an http-request action among :
12508 * set-method
12509 * set-path
12510 * set-query
12511 * set-uri
12512 *
12513 * All of them accept a single argument of type string representing a log-format.
12514 * The resulting rule makes use of arg->act.p[0..1] to store the log-format list
12515 * head, and p[2] to store the action as an int (0=method, 1=path, 2=query, 3=uri).
12516 * It returns 0 on success, < 0 on error.
12517 */
12518int parse_set_req_line(const char **args, int *orig_arg, struct proxy *px, struct http_req_rule *rule, char **err)
12519{
12520 int cur_arg = *orig_arg;
12521
12522 rule->action = HTTP_REQ_ACT_CUSTOM_CONT;
12523
12524 switch (args[0][4]) {
12525 case 'm' :
12526 *(int *)&rule->arg.act.p[2] = 0;
12527 rule->action_ptr = http_action_set_req_line;
12528 break;
12529 case 'p' :
12530 *(int *)&rule->arg.act.p[2] = 1;
12531 rule->action_ptr = http_action_set_req_line;
12532 break;
12533 case 'q' :
12534 *(int *)&rule->arg.act.p[2] = 2;
12535 rule->action_ptr = http_action_set_req_line;
12536 break;
12537 case 'u' :
12538 *(int *)&rule->arg.act.p[2] = 3;
12539 rule->action_ptr = http_action_set_req_line;
12540 break;
12541 default:
12542 memprintf(err, "internal error: unhandled action '%s'", args[0]);
12543 return -1;
12544 }
12545
12546 if (!*args[cur_arg] ||
12547 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
12548 memprintf(err, "expects exactly 1 argument <format>");
12549 return -1;
12550 }
12551
12552 LIST_INIT((struct list *)&rule->arg.act.p[0]);
12553 proxy->conf.args.ctx = ARGC_HRQ;
12554 parse_logformat_string(args[cur_arg], proxy, (struct list *)&rule->arg.act.p[0], LOG_OPT_HTTP,
12555 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
12556 proxy->conf.args.file, proxy->conf.args.line);
12557
12558 (*orig_arg)++;
12559 return 0;
12560}
12561
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12562/* This function executes the "capture" action. It executes a fetch expression,
12563 * turns the result into a string and puts it in a capture slot. It always
12564 * returns 1. If an error occurs the action is cancelled, but the rule
12565 * processing continues.
12566 */
12567int http_action_req_capture(struct http_req_rule *rule, struct proxy *px, struct stream *s)
12568{
12569 struct session *sess = s->sess;
12570 struct sample *key;
12571 struct sample_expr *expr = rule->arg.act.p[0];
12572 struct cap_hdr *h = rule->arg.act.p[1];
12573 char **cap = s->req_cap;
12574 int len;
12575
Adis Nezirovic79beb242015-07-06 15:41:02 +0200[diff] [blame]12576 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]12577 if (!key)
12578 return 1;
12579
12580 if (cap[h->index] == NULL)
12581 cap[h->index] = pool_alloc2(h->pool);
12582
12583 if (cap[h->index] == NULL) /* no more capture memory */
12584 return 1;
12585
12586 len = key->data.str.len;
12587 if (len > h->len)
12588 len = h->len;
12589
12590 memcpy(cap[h->index], key->data.str.str, len);
12591 cap[h->index][len] = 0;
12592 return 1;
12593}
12594
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12595/* This function executes the "capture" action and store the result in a
12596 * capture slot if exists. It executes a fetch expression, turns the result
12597 * into a string and puts it in a capture slot. It always returns 1. If an
12598 * error occurs the action is cancelled, but the rule processing continues.
12599 */
12600int http_action_req_capture_by_id(struct http_req_rule *rule, struct proxy *px, struct stream *s)
12601{
12602 struct session *sess = s->sess;
12603 struct sample *key;
12604 struct sample_expr *expr = rule->arg.act.p[0];
12605 struct cap_hdr *h;
12606 int idx = (long)rule->arg.act.p[1];
12607 char **cap = s->req_cap;
12608 struct proxy *fe = strm_fe(s);
12609 int len;
12610 int i;
12611
12612 /* Look for the original configuration. */
12613 for (h = fe->req_cap, i = fe->nb_req_cap - 1;
12614 h != NULL && i != idx ;
12615 i--, h = h->next);
12616 if (!h)
12617 return 1;
12618
Adis Nezirovic79beb242015-07-06 15:41:02 +0200[diff] [blame]12619 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]12620 if (!key)
12621 return 1;
12622
12623 if (cap[h->index] == NULL)
12624 cap[h->index] = pool_alloc2(h->pool);
12625
12626 if (cap[h->index] == NULL) /* no more capture memory */
12627 return 1;
12628
12629 len = key->data.str.len;
12630 if (len > h->len)
12631 len = h->len;
12632
12633 memcpy(cap[h->index], key->data.str.str, len);
12634 cap[h->index][len] = 0;
12635 return 1;
12636}
12637
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12638/* parse an "http-request capture" action. It takes a single argument which is
12639 * a sample fetch expression. It stores the expression into arg->act.p[0] and
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12640 * the allocated hdr_cap struct or the preallocated "id" into arg->act.p[1].
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12641 * It returns 0 on success, < 0 on error.
12642 */
12643int parse_http_req_capture(const char **args, int *orig_arg, struct proxy *px, struct http_req_rule *rule, char **err)
12644{
12645 struct sample_expr *expr;
12646 struct cap_hdr *hdr;
12647 int cur_arg;
Willy Tarreau3986ac12015-05-08 16:13:42 +0200[diff] [blame]12648 int len = 0;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12649
12650 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12651 if (strcmp(args[cur_arg], "if") == 0 ||
12652 strcmp(args[cur_arg], "unless") == 0)
12653 break;
12654
12655 if (cur_arg < *orig_arg + 3) {
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12656 memprintf(err, "expects <expression> [ 'len' <length> | id <idx> ]");
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12657 return -1;
12658 }
12659
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12660 cur_arg = *orig_arg;
12661 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12662 if (!expr)
12663 return -1;
12664
12665 if (!(expr->fetch->val & SMP_VAL_FE_HRQ_HDR)) {
12666 memprintf(err,
12667 "fetch method '%s' extracts information from '%s', none of which is available here",
12668 args[cur_arg-1], sample_src_names(expr->fetch->use));
12669 free(expr);
12670 return -1;
12671 }
12672
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12673 if (!args[cur_arg] || !*args[cur_arg]) {
12674 memprintf(err, "expects 'len or 'id'");
12675 free(expr);
12676 return -1;
12677 }
12678
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12679 if (strcmp(args[cur_arg], "len") == 0) {
12680 cur_arg++;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12681
12682 if (!(px->cap & PR_CAP_FE)) {
12683 memprintf(err, "proxy '%s' has no frontend capability", px->id);
12684 return -1;
12685 }
12686
12687 proxy->conf.args.ctx = ARGC_CAP;
12688
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12689 if (!args[cur_arg]) {
12690 memprintf(err, "missing length value");
12691 free(expr);
12692 return -1;
12693 }
12694 /* we copy the table name for now, it will be resolved later */
12695 len = atoi(args[cur_arg]);
12696 if (len <= 0) {
12697 memprintf(err, "length must be > 0");
12698 free(expr);
12699 return -1;
12700 }
12701 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12702
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12703 if (!len) {
12704 memprintf(err, "a positive 'len' argument is mandatory");
12705 free(expr);
12706 return -1;
12707 }
12708
12709 hdr = calloc(sizeof(struct cap_hdr), 1);
12710 hdr->next = px->req_cap;
12711 hdr->name = NULL; /* not a header capture */
12712 hdr->namelen = 0;
12713 hdr->len = len;
12714 hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
12715 hdr->index = px->nb_req_cap++;
12716
12717 px->req_cap = hdr;
12718 px->to_log |= LW_REQHDR;
12719
12720 rule->action = HTTP_REQ_ACT_CUSTOM_CONT;
12721 rule->action_ptr = http_action_req_capture;
12722 rule->arg.act.p[0] = expr;
12723 rule->arg.act.p[1] = hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12724 }
12725
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12726 else if (strcmp(args[cur_arg], "id") == 0) {
12727 int id;
12728 char *error;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12729
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12730 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12731
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12732 if (!args[cur_arg]) {
12733 memprintf(err, "missing id value");
12734 free(expr);
12735 return -1;
12736 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12737
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12738 id = strtol(args[cur_arg], &error, 10);
12739 if (*error != '\0') {
12740 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12741 free(expr);
12742 return -1;
12743 }
12744 cur_arg++;
12745
12746 proxy->conf.args.ctx = ARGC_CAP;
12747
12748 rule->action = HTTP_REQ_ACT_CUSTOM_CONT;
12749 rule->action_ptr = http_action_req_capture_by_id;
12750 rule->arg.act.p[0] = expr;
12751 rule->arg.act.p[1] = (void *)(long)id;
12752 }
12753
12754 else {
12755 memprintf(err, "expects 'len' or 'id', found '%s'", args[cur_arg]);
12756 free(expr);
12757 return -1;
12758 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12759
12760 *orig_arg = cur_arg;
12761 return 0;
12762}
12763
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12764/* This function executes the "capture" action and store the result in a
12765 * capture slot if exists. It executes a fetch expression, turns the result
12766 * into a string and puts it in a capture slot. It always returns 1. If an
12767 * error occurs the action is cancelled, but the rule processing continues.
12768 */
12769int http_action_res_capture_by_id(struct http_res_rule *rule, struct proxy *px, struct stream *s)
12770{
12771 struct session *sess = s->sess;
12772 struct sample *key;
12773 struct sample_expr *expr = rule->arg.act.p[0];
12774 struct cap_hdr *h;
12775 int idx = (long)rule->arg.act.p[1];
12776 char **cap = s->res_cap;
12777 struct proxy *fe = strm_fe(s);
12778 int len;
12779 int i;
12780
12781 /* Look for the original configuration. */
12782 for (h = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
12783 h != NULL && i != idx ;
12784 i--, h = h->next);
12785 if (!h)
12786 return 1;
12787
Adis Nezirovic79beb242015-07-06 15:41:02 +0200[diff] [blame]12788 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]12789 if (!key)
12790 return 1;
12791
12792 if (cap[h->index] == NULL)
12793 cap[h->index] = pool_alloc2(h->pool);
12794
12795 if (cap[h->index] == NULL) /* no more capture memory */
12796 return 1;
12797
12798 len = key->data.str.len;
12799 if (len > h->len)
12800 len = h->len;
12801
12802 memcpy(cap[h->index], key->data.str.str, len);
12803 cap[h->index][len] = 0;
12804 return 1;
12805}
12806
12807/* parse an "http-response capture" action. It takes a single argument which is
12808 * a sample fetch expression. It stores the expression into arg->act.p[0] and
12809 * the allocated hdr_cap struct od the preallocated id into arg->act.p[1].
12810 * It returns 0 on success, < 0 on error.
12811 */
12812int parse_http_res_capture(const char **args, int *orig_arg, struct proxy *px, struct http_res_rule *rule, char **err)
12813{
12814 struct sample_expr *expr;
12815 int cur_arg;
12816 int id;
12817 char *error;
12818
12819 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12820 if (strcmp(args[cur_arg], "if") == 0 ||
12821 strcmp(args[cur_arg], "unless") == 0)
12822 break;
12823
12824 if (cur_arg < *orig_arg + 3) {
12825 memprintf(err, "expects <expression> [ 'len' <length> | id <idx> ]");
12826 return -1;
12827 }
12828
12829 cur_arg = *orig_arg;
12830 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12831 if (!expr)
12832 return -1;
12833
12834 if (!(expr->fetch->val & SMP_VAL_FE_HRS_HDR)) {
12835 memprintf(err,
12836 "fetch method '%s' extracts information from '%s', none of which is available here",
12837 args[cur_arg-1], sample_src_names(expr->fetch->use));
12838 free(expr);
12839 return -1;
12840 }
12841
12842 if (!args[cur_arg] || !*args[cur_arg]) {
12843 memprintf(err, "expects 'len or 'id'");
12844 free(expr);
12845 return -1;
12846 }
12847
12848 if (strcmp(args[cur_arg], "id") != 0) {
12849 memprintf(err, "expects 'id', found '%s'", args[cur_arg]);
12850 free(expr);
12851 return -1;
12852 }
12853
12854 cur_arg++;
12855
12856 if (!args[cur_arg]) {
12857 memprintf(err, "missing id value");
12858 free(expr);
12859 return -1;
12860 }
12861
12862 id = strtol(args[cur_arg], &error, 10);
12863 if (*error != '\0') {
12864 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12865 free(expr);
12866 return -1;
12867 }
12868 cur_arg++;
12869
12870 LIST_INIT((struct list *)&rule->arg.act.p[0]);
12871 proxy->conf.args.ctx = ARGC_CAP;
12872
12873 rule->action = HTTP_RES_ACT_CUSTOM_CONT;
12874 rule->action_ptr = http_action_res_capture_by_id;
12875 rule->arg.act.p[0] = expr;
12876 rule->arg.act.p[1] = (void *)(long)id;
12877
12878 *orig_arg = cur_arg;
12879 return 0;
12880}
12881
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12882/*
12883 * Return the struct http_req_action_kw associated to a keyword.
12884 */
12885struct http_req_action_kw *action_http_req_custom(const char *kw)
12886{
12887 if (!LIST_ISEMPTY(&http_req_keywords.list)) {
12888 struct http_req_action_kw_list *kw_list;
12889 int i;
12890
12891 list_for_each_entry(kw_list, &http_req_keywords.list, list) {
12892 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
Thierry FOURNIER0e118632015-06-04 11:44:06 +0200[diff] [blame]12893 if (kw_list->kw[i].match_pfx &&
12894 strncmp(kw, kw_list->kw[i].kw, strlen(kw_list->kw[i].kw)) == 0)
12895 return &kw_list->kw[i];
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12896 if (!strcmp(kw, kw_list->kw[i].kw))
12897 return &kw_list->kw[i];
12898 }
12899 }
12900 }
12901 return NULL;
12902}
12903
12904/*
12905 * Return the struct http_res_action_kw associated to a keyword.
12906 */
12907struct http_res_action_kw *action_http_res_custom(const char *kw)
12908{
12909 if (!LIST_ISEMPTY(&http_res_keywords.list)) {
12910 struct http_res_action_kw_list *kw_list;
12911 int i;
12912
12913 list_for_each_entry(kw_list, &http_res_keywords.list, list) {
12914 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
Thierry FOURNIER0e118632015-06-04 11:44:06 +0200[diff] [blame]12915 if (kw_list->kw[i].match_pfx &&
12916 strncmp(kw, kw_list->kw[i].kw, strlen(kw_list->kw[i].kw)) == 0)
12917 return &kw_list->kw[i];
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12918 if (!strcmp(kw, kw_list->kw[i].kw))
12919 return &kw_list->kw[i];
12920 }
12921 }
12922 }
12923 return NULL;
12924}
12925
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12926/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12927/* All supported ACL keywords must be declared here. */
12928/************************************************************************/
12929
12930/* Note: must not be declared <const> as its list will be overwritten.
12931 * Please take care of keeping this list alphabetically sorted.
12932 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]12933static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12934 { "base", "base", PAT_MATCH_STR },
12935 { "base_beg", "base", PAT_MATCH_BEG },
12936 { "base_dir", "base", PAT_MATCH_DIR },
12937 { "base_dom", "base", PAT_MATCH_DOM },
12938 { "base_end", "base", PAT_MATCH_END },
12939 { "base_len", "base", PAT_MATCH_LEN },
12940 { "base_reg", "base", PAT_MATCH_REG },
12941 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]12942
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12943 { "cook", "req.cook", PAT_MATCH_STR },
12944 { "cook_beg", "req.cook", PAT_MATCH_BEG },
12945 { "cook_dir", "req.cook", PAT_MATCH_DIR },
12946 { "cook_dom", "req.cook", PAT_MATCH_DOM },
12947 { "cook_end", "req.cook", PAT_MATCH_END },
12948 { "cook_len", "req.cook", PAT_MATCH_LEN },
12949 { "cook_reg", "req.cook", PAT_MATCH_REG },
12950 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12951
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12952 { "hdr", "req.hdr", PAT_MATCH_STR },
12953 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
12954 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
12955 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
12956 { "hdr_end", "req.hdr", PAT_MATCH_END },
12957 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
12958 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
12959 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12960
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12961 /* these two declarations uses strings with list storage (in place
12962 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
12963 * and delete functions are relative to the list management. The parse
12964 * and match method are related to the corresponding fetch methods. This
12965 * is very particular ACL declaration mode.
12966 */
12967 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
12968 { "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]12969
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12970 { "path", "path", PAT_MATCH_STR },
12971 { "path_beg", "path", PAT_MATCH_BEG },
12972 { "path_dir", "path", PAT_MATCH_DIR },
12973 { "path_dom", "path", PAT_MATCH_DOM },
12974 { "path_end", "path", PAT_MATCH_END },
12975 { "path_len", "path", PAT_MATCH_LEN },
12976 { "path_reg", "path", PAT_MATCH_REG },
12977 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12978
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12979 { "req_ver", "req.ver", PAT_MATCH_STR },
12980 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12981
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12982 { "scook", "res.cook", PAT_MATCH_STR },
12983 { "scook_beg", "res.cook", PAT_MATCH_BEG },
12984 { "scook_dir", "res.cook", PAT_MATCH_DIR },
12985 { "scook_dom", "res.cook", PAT_MATCH_DOM },
12986 { "scook_end", "res.cook", PAT_MATCH_END },
12987 { "scook_len", "res.cook", PAT_MATCH_LEN },
12988 { "scook_reg", "res.cook", PAT_MATCH_REG },
12989 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12990
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12991 { "shdr", "res.hdr", PAT_MATCH_STR },
12992 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
12993 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
12994 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
12995 { "shdr_end", "res.hdr", PAT_MATCH_END },
12996 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
12997 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
12998 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12999
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13000 { "url", "url", PAT_MATCH_STR },
13001 { "url_beg", "url", PAT_MATCH_BEG },
13002 { "url_dir", "url", PAT_MATCH_DIR },
13003 { "url_dom", "url", PAT_MATCH_DOM },
13004 { "url_end", "url", PAT_MATCH_END },
13005 { "url_len", "url", PAT_MATCH_LEN },
13006 { "url_reg", "url", PAT_MATCH_REG },
13007 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13008
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]13009 { "urlp", "urlp", PAT_MATCH_STR },
13010 { "urlp_beg", "urlp", PAT_MATCH_BEG },
13011 { "urlp_dir", "urlp", PAT_MATCH_DIR },
13012 { "urlp_dom", "urlp", PAT_MATCH_DOM },
13013 { "urlp_end", "urlp", PAT_MATCH_END },
13014 { "urlp_len", "urlp", PAT_MATCH_LEN },
13015 { "urlp_reg", "urlp", PAT_MATCH_REG },
13016 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13017
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]13018 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]13019}};
13020
13021/************************************************************************/
13022/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]13023/************************************************************************/
13024/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]13025static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13026 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13027 { "base32", smp_fetch_base32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13028 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
13029
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]13030 /* capture are allocated and are permanent in the stream */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]13031 { "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]13032
13033 /* retrieve these captures from the HTTP logs */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]13034 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
13035 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
13036 { "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]13037
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]13038 { "capture.res.hdr", smp_fetch_capture_header_res, ARG1(1,SINT), NULL, SMP_T_STR, SMP_USE_HRSHP },
13039 { "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]13040
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13041 /* cookie is valid in both directions (eg: for "stick ...") but cook*
13042 * are only here to match the ACL's name, are request-only and are used
13043 * for ACL compatibility only.
13044 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13045 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
13046 { "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]13047 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
13048 { "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]13049
13050 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
13051 * only here to match the ACL's name, are request-only and are used for
13052 * ACL compatibility only.
13053 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13054 { "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]13055 { "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]13056 { "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]13057 { "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]13058
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]13059 { "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]13060 { "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]13061 { "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]13062 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13063 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]13064 { "query", smp_fetch_query, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13065
13066 /* HTTP protocol on the request path */
13067 { "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]13068 { "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]13069
13070 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13071 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
13072 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13073
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]13074 { "req.body", smp_fetch_body, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13075 { "req.body_len", smp_fetch_body_len, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
13076 { "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]13077 { "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]13078
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13079 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13080 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
13081 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13082
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13083 /* 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]13084 { "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]13085 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
13086 { "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]13087
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13088 { "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]13089 { "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]13090 { "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]13091 { "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]13092 { "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]13093 { "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]13094 { "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]13095
13096 /* 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]13097 { "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]13098 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
13099 { "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]13100
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13101 { "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]13102 { "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]13103 { "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]13104 { "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]13105 { "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]13106 { "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]13107 { "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]13108
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13109 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13110 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13111 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
13112 { "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]13113 { "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]13114
13115 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13116 { "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]13117 { "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]13118 { "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]13119 { "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]13120
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13121 { "status", smp_fetch_stcode, 0, NULL, SMP_T_SINT, SMP_USE_HRSHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13122 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13123 { "url32", smp_fetch_url32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]13124 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13125 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13126 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]13127 { "url_param", smp_fetch_url_param, ARG2(0,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
13128 { "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]13129 { "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]13130 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]13131}};
13132
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13133
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13134/************************************************************************/
13135/* All supported converter keywords must be declared here. */
13136/************************************************************************/
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13137/* Note: must not be declared <const> as its list will be overwritten */
13138static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]13139 { "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]13140 { "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]13141 { "capture-req", smp_conv_req_capture, ARG1(1,SINT), NULL, SMP_T_STR, SMP_T_STR},
13142 { "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]13143 { "url_dec", sample_conv_url_dec, 0, NULL, SMP_T_STR, SMP_T_STR},
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13144 { NULL, NULL, 0, 0, 0 },
13145}};
13146
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]13147
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13148/************************************************************************/
13149/* All supported http-request action keywords must be declared here. */
13150/************************************************************************/
13151struct http_req_action_kw_list http_req_actions = {
13152 .scope = "http",
13153 .kw = {
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]13154 { "capture", parse_http_req_capture },
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13155 { "set-method", parse_set_req_line },
13156 { "set-path", parse_set_req_line },
13157 { "set-query", parse_set_req_line },
13158 { "set-uri", parse_set_req_line },
Willy Tarreaucb703b02015-04-03 09:52:01 +0200[diff] [blame]13159 { NULL, NULL }
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13160 }
13161};
13162
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13163struct http_res_action_kw_list http_res_actions = {
13164 .scope = "http",
13165 .kw = {
13166 { "capture", parse_http_res_capture },
13167 { NULL, NULL }
13168 }
13169};
13170
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13171__attribute__((constructor))
13172static void __http_protocol_init(void)
13173{
13174 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]13175 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13176 sample_register_convs(&sample_conv_kws);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13177 http_req_keywords_register(&http_req_actions);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13178 http_res_keywords_register(&http_res_actions);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13179}
13180
13181
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]13182/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]13183 * Local variables:
13184 * c-indent-level: 8
13185 * c-basic-offset: 8
13186 * End:
13187 */