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git01.mediatek.com / haproxy / b7636d1a100419b3e88f7de4b2eea32f8351eb73 / . / src / proto_http.c
blob: 1c30b3bf454e979176d70dfd91e5fbcf09b881ad [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 }
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3677 }
3678 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3679
3680 /* we reached the end of the rules, nothing to report */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3681 return HTTP_RULE_RES_CONT;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3682}
3683
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3684
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3685/* Executes the http-response rules <rules> for stream <s> and proxy <px>. It
3686 * returns one of 5 possible statuses: HTTP_RULE_RES_CONT, HTTP_RULE_RES_STOP,
3687 * HTTP_RULE_RES_DONE, HTTP_RULE_RES_YIELD, or HTTP_RULE_RES_BADREQ. If *CONT
3688 * is returned, the process can continue the evaluation of next rule list. If
3689 * *STOP or *DONE is returned, the process must stop the evaluation. If *BADREQ
3690 * is returned, it means the operation could not be processed and a server error
3691 * must be returned. It may set the TX_SVDENY on txn->flags if it encounters a
3692 * deny rule. If *YIELD is returned, the caller must call again the function
3693 * with the same context.
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3694 */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3695static enum rule_result
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3696http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s)
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3697{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3698 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3699 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3700 struct connection *cli_conn;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3701 struct http_res_rule *rule;
3702 struct hdr_ctx ctx;
3703
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3704 /* If "the current_rule_list" match the executed rule list, we are in
3705 * resume condition. If a resume is needed it is always in the action
3706 * and never in the ACL or converters. In this case, we initialise the
3707 * current rule, and go to the action execution point.
3708 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3709 if (s->current_rule) {
3710 rule = s->current_rule;
3711 s->current_rule = NULL;
3712 if (s->current_rule_list == rules)
3713 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3714 }
3715 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3716
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3717 list_for_each_entry(rule, rules, list) {
3718 if (rule->action >= HTTP_RES_ACT_MAX)
3719 continue;
3720
3721 /* check optional condition */
3722 if (rule->cond) {
3723 int ret;
3724
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3725 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]3726 ret = acl_pass(ret);
3727
3728 if (rule->cond->pol == ACL_COND_UNLESS)
3729 ret = !ret;
3730
3731 if (!ret) /* condition not matched */
3732 continue;
3733 }
3734
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3735resume_execution:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3736 switch (rule->action) {
3737 case HTTP_RES_ACT_ALLOW:
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3738 return HTTP_RULE_RES_STOP; /* "allow" rules are OK */
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3739
3740 case HTTP_RES_ACT_DENY:
3741 txn->flags |= TX_SVDENY;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3742 return HTTP_RULE_RES_STOP;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3743
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3744 case HTTP_RES_ACT_SET_NICE:
3745 s->task->nice = rule->arg.nice;
3746 break;
3747
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3748 case HTTP_RES_ACT_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3749 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3750 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]3751 break;
3752
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3753 case HTTP_RES_ACT_SET_MARK:
3754#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3755 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3756 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]3757#endif
3758 break;
3759
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3760 case HTTP_RES_ACT_SET_LOGL:
3761 s->logs.level = rule->arg.loglevel;
3762 break;
3763
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3764 case HTTP_RES_ACT_REPLACE_HDR:
3765 case HTTP_RES_ACT_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3766 if (http_transform_header(s, &txn->rsp, rule->arg.hdr_add.name,
3767 rule->arg.hdr_add.name_len,
3768 &rule->arg.hdr_add.fmt,
3769 &rule->arg.hdr_add.re, rule->action))
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3770 return HTTP_RULE_RES_STOP; /* note: we should report an error here */
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3771 break;
3772
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3773 case HTTP_RES_ACT_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3774 ctx.idx = 0;
3775 /* remove all occurrences of the header */
3776 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3777 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3778 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3779 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3780 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3781
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3782 case HTTP_RES_ACT_SET_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3783 case HTTP_RES_ACT_ADD_HDR:
3784 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3785 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3786 trash.len = rule->arg.hdr_add.name_len;
3787 trash.str[trash.len++] = ':';
3788 trash.str[trash.len++] = ' ';
3789 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]3790
3791 if (rule->action == HTTP_RES_ACT_SET_HDR) {
3792 /* remove all occurrences of the header */
3793 ctx.idx = 0;
3794 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3795 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3796 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3797 }
3798 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3799 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3800 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3801
3802 case HTTP_RES_ACT_DEL_ACL:
3803 case HTTP_RES_ACT_DEL_MAP: {
3804 struct pat_ref *ref;
3805 char *key;
3806 int len;
3807
3808 /* collect reference */
3809 ref = pat_ref_lookup(rule->arg.map.ref);
3810 if (!ref)
3811 continue;
3812
3813 /* collect key */
3814 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3815 key = trash.str;
3816 key[len] = '\0';
3817
3818 /* perform update */
3819 /* returned code: 1=ok, 0=ko */
3820 pat_ref_delete(ref, key);
3821
3822 break;
3823 }
3824
3825 case HTTP_RES_ACT_ADD_ACL: {
3826 struct pat_ref *ref;
3827 char *key;
3828 struct chunk *trash_key;
3829 int len;
3830
3831 trash_key = get_trash_chunk();
3832
3833 /* collect reference */
3834 ref = pat_ref_lookup(rule->arg.map.ref);
3835 if (!ref)
3836 continue;
3837
3838 /* collect key */
3839 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3840 key = trash_key->str;
3841 key[len] = '\0';
3842
3843 /* perform update */
3844 /* check if the entry already exists */
3845 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3846 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3847
3848 break;
3849 }
3850
3851 case HTTP_RES_ACT_SET_MAP: {
3852 struct pat_ref *ref;
3853 char *key, *value;
3854 struct chunk *trash_key, *trash_value;
3855 int len;
3856
3857 trash_key = get_trash_chunk();
3858 trash_value = get_trash_chunk();
3859
3860 /* collect reference */
3861 ref = pat_ref_lookup(rule->arg.map.ref);
3862 if (!ref)
3863 continue;
3864
3865 /* collect key */
3866 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3867 key = trash_key->str;
3868 key[len] = '\0';
3869
3870 /* collect value */
3871 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3872 value = trash_value->str;
3873 value[len] = '\0';
3874
3875 /* perform update */
3876 if (pat_ref_find_elt(ref, key) != NULL)
3877 /* update entry if it exists */
3878 pat_ref_set(ref, key, value, NULL);
3879 else
3880 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3881 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3882
3883 break;
3884 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3885
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3886 case HTTP_RES_ACT_REDIR:
3887 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3888 return HTTP_RULE_RES_BADREQ;
3889 return HTTP_RULE_RES_DONE;
3890
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3891 case HTTP_RES_ACT_CUSTOM_CONT:
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3892 if (!rule->action_ptr(rule, px, s)) {
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3893 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3894 return HTTP_RULE_RES_YIELD;
3895 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3896 break;
3897
3898 case HTTP_RES_ACT_CUSTOM_STOP:
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3899 rule->action_ptr(rule, px, s);
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3900 return HTTP_RULE_RES_STOP;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3901 }
3902 }
3903
3904 /* we reached the end of the rules, nothing to report */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3905 return HTTP_RULE_RES_CONT;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3906}
3907
3908
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3909/* Perform an HTTP redirect based on the information in <rule>. The function
3910 * returns non-zero on success, or zero in case of a, irrecoverable error such
3911 * as too large a request to build a valid response.
3912 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3913static 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]3914{
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3915 struct http_msg *req = &txn->req;
3916 struct http_msg *res = &txn->rsp;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3917 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3918 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3919
3920 /* build redirect message */
3921 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3922 case 308:
3923 msg_fmt = HTTP_308;
3924 break;
3925 case 307:
3926 msg_fmt = HTTP_307;
3927 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3928 case 303:
3929 msg_fmt = HTTP_303;
3930 break;
3931 case 301:
3932 msg_fmt = HTTP_301;
3933 break;
3934 case 302:
3935 default:
3936 msg_fmt = HTTP_302;
3937 break;
3938 }
3939
3940 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3941 return 0;
3942
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3943 location = trash.str + trash.len;
3944
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3945 switch(rule->type) {
3946 case REDIRECT_TYPE_SCHEME: {
3947 const char *path;
3948 const char *host;
3949 struct hdr_ctx ctx;
3950 int pathlen;
3951 int hostlen;
3952
3953 host = "";
3954 hostlen = 0;
3955 ctx.idx = 0;
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3956 if (http_find_header2("Host", 4, req->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3957 host = ctx.line + ctx.val;
3958 hostlen = ctx.vlen;
3959 }
3960
3961 path = http_get_path(txn);
3962 /* build message using path */
3963 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3964 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]3965 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3966 int qs = 0;
3967 while (qs < pathlen) {
3968 if (path[qs] == '?') {
3969 pathlen = qs;
3970 break;
3971 }
3972 qs++;
3973 }
3974 }
3975 } else {
3976 path = "/";
3977 pathlen = 1;
3978 }
3979
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3980 if (rule->rdr_str) { /* this is an old "redirect" rule */
3981 /* check if we can add scheme + "://" + host + path */
3982 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3983 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3984
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3985 /* add scheme */
3986 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3987 trash.len += rule->rdr_len;
3988 }
3989 else {
3990 /* add scheme with executing log format */
3991 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3992
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3993 /* check if we can add scheme + "://" + host + path */
3994 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
3995 return 0;
3996 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3997 /* add "://" */
3998 memcpy(trash.str + trash.len, "://", 3);
3999 trash.len += 3;
4000
4001 /* add host */
4002 memcpy(trash.str + trash.len, host, hostlen);
4003 trash.len += hostlen;
4004
4005 /* add path */
4006 memcpy(trash.str + trash.len, path, pathlen);
4007 trash.len += pathlen;
4008
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4009 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4010 if (trash.len && trash.str[trash.len - 1] != '/' &&
4011 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
4012 if (trash.len > trash.size - 5)
4013 return 0;
4014 trash.str[trash.len] = '/';
4015 trash.len++;
4016 }
4017
4018 break;
4019 }
4020 case REDIRECT_TYPE_PREFIX: {
4021 const char *path;
4022 int pathlen;
4023
4024 path = http_get_path(txn);
4025 /* build message using path */
4026 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4027 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]4028 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
4029 int qs = 0;
4030 while (qs < pathlen) {
4031 if (path[qs] == '?') {
4032 pathlen = qs;
4033 break;
4034 }
4035 qs++;
4036 }
4037 }
4038 } else {
4039 path = "/";
4040 pathlen = 1;
4041 }
4042
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4043 if (rule->rdr_str) { /* this is an old "redirect" rule */
4044 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
4045 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4046
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4047 /* add prefix. Note that if prefix == "/", we don't want to
4048 * add anything, otherwise it makes it hard for the user to
4049 * configure a self-redirection.
4050 */
4051 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
4052 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
4053 trash.len += rule->rdr_len;
4054 }
4055 }
4056 else {
4057 /* add prefix with executing log format */
4058 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
4059
4060 /* Check length */
4061 if (trash.len + pathlen > trash.size - 4)
4062 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4063 }
4064
4065 /* add path */
4066 memcpy(trash.str + trash.len, path, pathlen);
4067 trash.len += pathlen;
4068
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4069 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4070 if (trash.len && trash.str[trash.len - 1] != '/' &&
4071 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
4072 if (trash.len > trash.size - 5)
4073 return 0;
4074 trash.str[trash.len] = '/';
4075 trash.len++;
4076 }
4077
4078 break;
4079 }
4080 case REDIRECT_TYPE_LOCATION:
4081 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4082 if (rule->rdr_str) { /* this is an old "redirect" rule */
4083 if (trash.len + rule->rdr_len > trash.size - 4)
4084 return 0;
4085
4086 /* add location */
4087 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
4088 trash.len += rule->rdr_len;
4089 }
4090 else {
4091 /* add location with executing log format */
4092 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]4093
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4094 /* Check left length */
4095 if (trash.len > trash.size - 4)
4096 return 0;
4097 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4098 break;
4099 }
4100
4101 if (rule->cookie_len) {
4102 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
4103 trash.len += 14;
4104 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
4105 trash.len += rule->cookie_len;
4106 memcpy(trash.str + trash.len, "\r\n", 2);
4107 trash.len += 2;
4108 }
4109
4110 /* add end of headers and the keep-alive/close status.
4111 * We may choose to set keep-alive if the Location begins
4112 * with a slash, because the client will come back to the
4113 * same server.
4114 */
4115 txn->status = rule->code;
4116 /* let's log the request time */
4117 s->logs.tv_request = now;
4118
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4119 if (*location == '/' &&
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4120 (req->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau2de8a502015-05-28 17:23:54 +0200[diff] [blame]4121 ((!(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]4122 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
4123 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
4124 /* keep-alive possible */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4125 if (!(req->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4126 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4127 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
4128 trash.len += 30;
4129 } else {
4130 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
4131 trash.len += 24;
4132 }
4133 }
4134 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
4135 trash.len += 4;
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4136 bo_inject(res->chn, trash.str, trash.len);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4137 /* "eat" the request */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4138 bi_fast_delete(req->chn->buf, req->sov);
4139 req->next -= req->sov;
4140 req->sov = 0;
4141 s->req.analysers = AN_REQ_HTTP_XFER_BODY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4142 s->res.analysers = AN_RES_HTTP_XFER_BODY;
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4143 req->msg_state = HTTP_MSG_CLOSED;
4144 res->msg_state = HTTP_MSG_DONE;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]4145 /* Trim any possible response */
4146 res->chn->buf->i = 0;
4147 res->next = res->sov = 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4148 } else {
4149 /* keep-alive not possible */
4150 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4151 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
4152 trash.len += 29;
4153 } else {
4154 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
4155 trash.len += 23;
4156 }
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4157 stream_int_retnclose(&s->si[0], &trash);
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4158 req->chn->analysers = 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4159 }
4160
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4161 if (!(s->flags & SF_ERR_MASK))
4162 s->flags |= SF_ERR_LOCAL;
4163 if (!(s->flags & SF_FINST_MASK))
4164 s->flags |= SF_FINST_R;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4165
4166 return 1;
4167}
4168
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4169/* This stream analyser runs all HTTP request processing which is common to
4170 * frontends and backends, which means blocking ACLs, filters, connection-close,
4171 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4172 * 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]4173 * either needs more data or wants to immediately abort the request (eg: deny,
4174 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4175 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4176int 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]4177{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4178 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4179 struct http_txn *txn = s->txn;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4180 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4181 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]4182 struct cond_wordlist *wl;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4183 enum rule_result verdict;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4184
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4185 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4186 /* we need more data */
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4187 goto return_prx_yield;
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4188 }
4189
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4190 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]4191 now_ms, __FUNCTION__,
4192 s,
4193 req,
4194 req->rex, req->wex,
4195 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4196 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4197 req->analysers);
4198
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4199 /* just in case we have some per-backend tracking */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4200 stream_inc_be_http_req_ctr(s);
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4201
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4202 /* evaluate http-request rules */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4203 if (!LIST_ISEMPTY(&px->http_req_rules)) {
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]4204 verdict = http_req_get_intercept_rule(px, &px->http_req_rules, s);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]4205
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4206 switch (verdict) {
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4207 case HTTP_RULE_RES_YIELD: /* some data miss, call the function later. */
4208 goto return_prx_yield;
4209
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4210 case HTTP_RULE_RES_CONT:
4211 case HTTP_RULE_RES_STOP: /* nothing to do */
4212 break;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4213
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4214 case HTTP_RULE_RES_DENY: /* deny or tarpit */
4215 if (txn->flags & TX_CLTARPIT)
4216 goto tarpit;
4217 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4218
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4219 case HTTP_RULE_RES_ABRT: /* abort request, response already sent. Eg: auth */
4220 goto return_prx_cond;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4221
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4222 case HTTP_RULE_RES_DONE: /* OK, but terminate request processing (eg: redirect) */
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4223 goto done;
4224
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4225 case HTTP_RULE_RES_BADREQ: /* failed with a bad request */
4226 goto return_bad_req;
4227 }
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4228 }
4229
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4230 /* OK at this stage, we know that the request was accepted according to
4231 * the http-request rules, we can check for the stats. Note that the
4232 * URI is detected *before* the req* rules in order not to be affected
4233 * by a possible reqrep, while they are processed *after* so that a
4234 * reqdeny can still block them. This clearly needs to change in 1.6!
4235 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4236 if (stats_check_uri(&s->si[1], txn, px)) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4237 s->target = &http_stats_applet.obj_type;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4238 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target)))) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4239 txn->status = 500;
4240 s->logs.tv_request = now;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4241 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]4242
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4243 if (!(s->flags & SF_ERR_MASK))
4244 s->flags |= SF_ERR_RESOURCE;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4245 goto return_prx_cond;
4246 }
4247
4248 /* parse the whole stats request and extract the relevant information */
4249 http_handle_stats(s, req);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]4250 verdict = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4251 /* not all actions implemented: deny, allow, auth */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4252
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4253 if (verdict == HTTP_RULE_RES_DENY) /* stats http-request deny */
4254 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4255
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4256 if (verdict == HTTP_RULE_RES_ABRT) /* stats auth / stats http-request auth */
4257 goto return_prx_cond;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]4258 }
4259
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4260 /* evaluate the req* rules except reqadd */
4261 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]4262 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4263 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4264
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4265 if (txn->flags & TX_CLDENY)
4266 goto deny;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]4267
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4268 if (txn->flags & TX_CLTARPIT)
4269 goto tarpit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4270 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4271
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4272 /* add request headers from the rule sets in the same order */
4273 list_for_each_entry(wl, &px->req_add, list) {
4274 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4275 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]4276 ret = acl_pass(ret);
4277 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
4278 ret = !ret;
4279 if (!ret)
4280 continue;
4281 }
4282
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4283 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4284 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]4285 }
4286
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4287
4288 /* Proceed with the stats now. */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]4289 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]4290 /* process the stats request now */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4291 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
4292 sess->fe->fe_counters.intercepted_req++;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4293
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4294 if (!(s->flags & SF_ERR_MASK)) // this is not really an error but it is
4295 s->flags |= SF_ERR_LOCAL; // to mark that it comes from the proxy
4296 if (!(s->flags & SF_FINST_MASK))
4297 s->flags |= SF_FINST_R;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4298
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4299 /* we may want to compress the stats page */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4300 if (sess->fe->comp || s->be->comp)
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4301 select_compression_request_header(s, req->buf);
4302
4303 /* 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]4304 req->analysers = (req->analysers & AN_REQ_HTTP_BODY) | AN_REQ_HTTP_XFER_BODY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4305 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4306 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4307
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4308 /* check whether we have some ACLs set to redirect this request */
4309 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4310 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4311 int ret;
4312
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4313 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]4314 ret = acl_pass(ret);
4315 if (rule->cond->pol == ACL_COND_UNLESS)
4316 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4317 if (!ret)
4318 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4319 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4320 if (!http_apply_redirect_rule(rule, s, txn))
4321 goto return_bad_req;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4322 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4323 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4324
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4325 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
4326 * If this happens, then the data will not come immediately, so we must
4327 * send all what we have without waiting. Note that due to the small gain
4328 * 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]4329 * 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]4330 * itself once used.
4331 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4332 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4333
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4334 done: /* done with this analyser, continue with next ones that the calling
4335 * points will have set, if any.
4336 */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4337 req->analyse_exp = TICK_ETERNITY;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4338 done_without_exp: /* done with this analyser, but dont reset the analyse_exp. */
4339 req->analysers &= ~an_bit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4340 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4341
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4342 tarpit:
4343 /* When a connection is tarpitted, we use the tarpit timeout,
4344 * which may be the same as the connect timeout if unspecified.
4345 * If unset, then set it to zero because we really want it to
4346 * eventually expire. We build the tarpit as an analyser.
4347 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4348 channel_erase(&s->req);
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4349
4350 /* wipe the request out so that we can drop the connection early
4351 * if the client closes first.
4352 */
4353 channel_dont_connect(req);
4354 req->analysers = 0; /* remove switching rules etc... */
4355 req->analysers |= AN_REQ_HTTP_TARPIT;
4356 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
4357 if (!req->analyse_exp)
4358 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4359 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4360 sess->fe->fe_counters.denied_req++;
4361 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4362 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4363 if (sess->listener->counters)
4364 sess->listener->counters->denied_req++;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4365 goto done_without_exp;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4366
4367 deny: /* this request was blocked (denied) */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4368 txn->flags |= TX_CLDENY;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]4369 txn->status = http_err_codes[txn->rule_deny_status];
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4370 s->logs.tv_request = now;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]4371 stream_int_retnclose(&s->si[0], http_error_message(s, txn->rule_deny_status));
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4372 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4373 sess->fe->fe_counters.denied_req++;
4374 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4375 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4376 if (sess->listener->counters)
4377 sess->listener->counters->denied_req++;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4378 goto return_prx_cond;
4379
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4380 return_bad_req:
4381 /* We centralize bad requests processing here */
4382 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
4383 /* we detected a parsing error. We want to archive this request
4384 * in the dedicated proxy area for later troubleshooting.
4385 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4386 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]4387 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4388
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4389 txn->req.msg_state = HTTP_MSG_ERROR;
4390 txn->status = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4391 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4392
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4393 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4394 if (sess->listener->counters)
4395 sess->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4396
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4397 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4398 if (!(s->flags & SF_ERR_MASK))
4399 s->flags |= SF_ERR_PRXCOND;
4400 if (!(s->flags & SF_FINST_MASK))
4401 s->flags |= SF_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]4402
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4403 req->analysers = 0;
4404 req->analyse_exp = TICK_ETERNITY;
4405 return 0;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4406
4407 return_prx_yield:
4408 channel_dont_connect(req);
4409 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4410}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4411
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4412/* This function performs all the processing enabled for the current request.
4413 * It returns 1 if the processing can continue on next analysers, or zero if it
4414 * needs more data, encounters an error, or wants to immediately abort the
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4415 * request. It relies on buffers flags, and updates s->req.analysers.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4416 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4417int http_process_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4418{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4419 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4420 struct http_txn *txn = s->txn;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4421 struct http_msg *msg = &txn->req;
Willy Tarreauee335e62015-04-21 18:15:13 +0200[diff] [blame]4422 struct connection *cli_conn = objt_conn(strm_sess(s)->origin);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4423
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4424 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4425 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4426 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4427 return 0;
4428 }
4429
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4430 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]4431 now_ms, __FUNCTION__,
4432 s,
4433 req,
4434 req->rex, req->wex,
4435 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4436 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4437 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4438
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4439 if (sess->fe->comp || s->be->comp)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]4440 select_compression_request_header(s, req->buf);
4441
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4442 /*
4443 * Right now, we know that we have processed the entire headers
4444 * and that unwanted requests have been filtered out. We can do
4445 * whatever we want with the remaining request. Also, now we
4446 * may have separate values for ->fe, ->be.
4447 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4448
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4449 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4450 * If HTTP PROXY is set we simply get remote server address parsing
4451 * incoming request. Note that this requires that a connection is
4452 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4453 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4454 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SF_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4455 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4456 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4457
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]4458 /* Note that for now we don't reuse existing proxy connections */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4459 if (unlikely((conn = si_alloc_conn(&s->si[1], 0)) == NULL)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4460 txn->req.msg_state = HTTP_MSG_ERROR;
4461 txn->status = 500;
4462 req->analysers = 0;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4463 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_500));
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4464
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4465 if (!(s->flags & SF_ERR_MASK))
4466 s->flags |= SF_ERR_RESOURCE;
4467 if (!(s->flags & SF_FINST_MASK))
4468 s->flags |= SF_FINST_R;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4469
4470 return 0;
4471 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4472
4473 path = http_get_path(txn);
4474 url2sa(req->buf->p + msg->sl.rq.u,
4475 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]4476 &conn->addr.to, NULL);
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4477 /* if the path was found, we have to remove everything between
4478 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
4479 * found, we need to replace from req->buf->p + msg->sl.rq.u for
4480 * u_l characters by a single "/".
4481 */
4482 if (path) {
4483 char *cur_ptr = req->buf->p;
4484 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4485 int delta;
4486
4487 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
4488 http_msg_move_end(&txn->req, delta);
4489 cur_end += delta;
4490 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4491 goto return_bad_req;
4492 }
4493 else {
4494 char *cur_ptr = req->buf->p;
4495 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4496 int delta;
4497
4498 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
4499 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
4500 http_msg_move_end(&txn->req, delta);
4501 cur_end += delta;
4502 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4503 goto return_bad_req;
4504 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4505 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4506
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4507 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4508 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4509 * Note that doing so might move headers in the request, but
4510 * the fields will stay coherent and the URI will not move.
4511 * This should only be performed in the backend.
4512 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4513 if ((s->be->cookie_name || s->be->appsession_name || sess->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4514 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
4515 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]4516
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4517 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4518 * 8: the appsession cookie was looked up very early in 1.2,
4519 * so let's do the same now.
4520 */
4521
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]4522 /* It needs to look into the URI unless persistence must be ignored */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4523 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SF_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4524 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]4525 }
4526
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4527 /* add unique-id if "header-unique-id" is specified */
4528
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4529 if (!LIST_ISEMPTY(&sess->fe->format_unique_id)) {
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4530 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
4531 goto return_bad_req;
4532 s->unique_id[0] = '\0';
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4533 build_logline(s, s->unique_id, UNIQUEID_LEN, &sess->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4534 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4535
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4536 if (sess->fe->header_unique_id && s->unique_id) {
4537 chunk_printf(&trash, "%s: %s", sess->fe->header_unique_id, s->unique_id);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4538 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4539 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4540 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]4541 goto return_bad_req;
4542 }
4543
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4544 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4545 * 9: add X-Forwarded-For if either the frontend or the backend
4546 * asks for it.
4547 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4548 if ((sess->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4549 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4550 if (!((sess->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
4551 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : sess->fe->fwdfor_hdr_name,
4552 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]4553 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4554 /* The header is set to be added only if none is present
4555 * and we found it, so don't do anything.
4556 */
4557 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4558 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4559 /* Add an X-Forwarded-For header unless the source IP is
4560 * in the 'except' network range.
4561 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4562 if ((!sess->fe->except_mask.s_addr ||
4563 (((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr & sess->fe->except_mask.s_addr)
4564 != sess->fe->except_net.s_addr) &&
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4565 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4566 (((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]4567 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4568 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4569 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4570 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4571
4572 /* Note: we rely on the backend to get the header name to be used for
4573 * x-forwarded-for, because the header is really meant for the backends.
4574 * However, if the backend did not specify any option, we have to rely
4575 * on the frontend's header name.
4576 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4577 if (s->be->fwdfor_hdr_len) {
4578 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4579 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4580 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4581 len = sess->fe->fwdfor_hdr_len;
4582 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4583 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4584 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]4585
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4586 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]4587 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4588 }
4589 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4590 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4591 /* FIXME: for the sake of completeness, we should also support
4592 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4593 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4594 int len;
4595 char pn[INET6_ADDRSTRLEN];
4596 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4597 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4598 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4599
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4600 /* Note: we rely on the backend to get the header name to be used for
4601 * x-forwarded-for, because the header is really meant for the backends.
4602 * However, if the backend did not specify any option, we have to rely
4603 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4604 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4605 if (s->be->fwdfor_hdr_len) {
4606 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4607 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4608 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4609 len = sess->fe->fwdfor_hdr_len;
4610 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4611 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4612 len += snprintf(trash.str + len, trash.size - len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4613
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4614 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]4615 goto return_bad_req;
4616 }
4617 }
4618
4619 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4620 * 10: add X-Original-To if either the frontend or the backend
4621 * asks for it.
4622 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4623 if ((sess->fe->options | s->be->options) & PR_O_ORGTO) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4624
4625 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4626 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4627 /* Add an X-Original-To header unless the destination IP is
4628 * in the 'except' network range.
4629 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4630 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4631
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4632 if (cli_conn->addr.to.ss_family == AF_INET &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4633 ((!sess->fe->except_mask_to.s_addr ||
4634 (((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr.s_addr & sess->fe->except_mask_to.s_addr)
4635 != sess->fe->except_to.s_addr) &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4636 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4637 (((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]4638 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4639 int len;
4640 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4641 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4642
4643 /* Note: we rely on the backend to get the header name to be used for
4644 * x-original-to, because the header is really meant for the backends.
4645 * However, if the backend did not specify any option, we have to rely
4646 * on the frontend's header name.
4647 */
4648 if (s->be->orgto_hdr_len) {
4649 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4650 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4651 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4652 len = sess->fe->orgto_hdr_len;
4653 memcpy(trash.str, sess->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4654 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4655 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]4656
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4657 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]4658 goto return_bad_req;
4659 }
4660 }
4661 }
4662
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4663 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
4664 * If an "Upgrade" token is found, the header is left untouched in order not to have
4665 * to deal with some servers bugs : some of them fail an Upgrade if anything but
4666 * "Upgrade" is present in the Connection header.
4667 */
4668 if (!(txn->flags & TX_HDR_CONN_UPG) &&
4669 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4670 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4671 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4672 unsigned int want_flags = 0;
4673
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4674 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4675 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4676 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4677 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4678 !((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4679 want_flags |= TX_CON_CLO_SET;
4680 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4681 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4682 ((sess->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4683 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4684 ((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4685 want_flags |= TX_CON_KAL_SET;
4686 }
4687
4688 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4689 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4690 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4691
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4692
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4693 /* If we have no server assigned yet and we're balancing on url_param
4694 * with a POST request, we may be interested in checking the body for
4695 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4696 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4697 if (!(s->flags & (SF_ASSIGNED|SF_DIRECT)) &&
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4698 s->txn->meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4699 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4700 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4701 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4702 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4703
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4704 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4705 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4706#ifdef TCP_QUICKACK
4707 /* We expect some data from the client. Unless we know for sure
4708 * we already have a full request, we have to re-enable quick-ack
4709 * in case we previously disabled it, otherwise we might cause
4710 * the client to delay further data.
4711 */
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4712 if ((sess->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]4713 cli_conn && conn_ctrl_ready(cli_conn) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4714 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4715 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4716 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4717#endif
4718 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4719
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4720 /*************************************************************
4721 * OK, that's finished for the headers. We have done what we *
4722 * could. Let's switch to the DATA state. *
4723 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4724 req->analyse_exp = TICK_ETERNITY;
4725 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4726
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4727 /* if the server closes the connection, we want to immediately react
4728 * and close the socket to save packets and syscalls.
4729 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4730 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4731 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4732
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4733 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4734 /* OK let's go on with the BODY now */
4735 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4736
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4737 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4738 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4739 /* we detected a parsing error. We want to archive this request
4740 * in the dedicated proxy area for later troubleshooting.
4741 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4742 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]4743 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4744
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4745 txn->req.msg_state = HTTP_MSG_ERROR;
4746 txn->status = 400;
4747 req->analysers = 0;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4748 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4749
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4750 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4751 if (sess->listener->counters)
4752 sess->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4753
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4754 if (!(s->flags & SF_ERR_MASK))
4755 s->flags |= SF_ERR_PRXCOND;
4756 if (!(s->flags & SF_FINST_MASK))
4757 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4758 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4759}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4760
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4761/* This function is an analyser which processes the HTTP tarpit. It always
4762 * returns zero, at the beginning because it prevents any other processing
4763 * from occurring, and at the end because it terminates the request.
4764 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4765int http_process_tarpit(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4766{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4767 struct http_txn *txn = s->txn;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4768
4769 /* This connection is being tarpitted. The CLIENT side has
4770 * already set the connect expiration date to the right
4771 * timeout. We just have to check that the client is still
4772 * there and that the timeout has not expired.
4773 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4774 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4775 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4776 !tick_is_expired(req->analyse_exp, now_ms))
4777 return 0;
4778
4779 /* We will set the queue timer to the time spent, just for
4780 * logging purposes. We fake a 500 server error, so that the
4781 * attacker will not suspect his connection has been tarpitted.
4782 * It will not cause trouble to the logs because we can exclude
4783 * the tarpitted connections by filtering on the 'PT' status flags.
4784 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4785 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4786
4787 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4788 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4789 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4790
4791 req->analysers = 0;
4792 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4793
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4794 if (!(s->flags & SF_ERR_MASK))
4795 s->flags |= SF_ERR_PRXCOND;
4796 if (!(s->flags & SF_FINST_MASK))
4797 s->flags |= SF_FINST_T;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4798 return 0;
4799}
4800
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4801/* This function is an analyser which waits for the HTTP request body. It waits
4802 * for either the buffer to be full, or the full advertised contents to have
4803 * reached the buffer. It must only be called after the standard HTTP request
4804 * processing has occurred, because it expects the request to be parsed and will
4805 * look for the Expect header. It may send a 100-Continue interim response. It
4806 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
4807 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
4808 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4809 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4810int http_wait_for_request_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4811{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4812 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4813 struct http_txn *txn = s->txn;
4814 struct http_msg *msg = &s->txn->req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4815
4816 /* We have to parse the HTTP request body to find any required data.
4817 * "balance url_param check_post" should have been the only way to get
4818 * into this. We were brought here after HTTP header analysis, so all
4819 * related structures are ready.
4820 */
4821
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4822 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
4823 /* This is the first call */
4824 if (msg->msg_state < HTTP_MSG_BODY)
4825 goto missing_data;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4826
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4827 if (msg->msg_state < HTTP_MSG_100_SENT) {
4828 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4829 * send an HTTP/1.1 100 Continue intermediate response.
4830 */
4831 if (msg->flags & HTTP_MSGF_VER_11) {
4832 struct hdr_ctx ctx;
4833 ctx.idx = 0;
4834 /* Expect is allowed in 1.1, look for it */
4835 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
4836 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4837 bo_inject(&s->res, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4838 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4839 }
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4840 msg->msg_state = HTTP_MSG_100_SENT;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4841 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4842
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4843 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4844 * req->buf->p still points to the beginning of the message. We
4845 * must save the body in msg->next because it survives buffer
4846 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4847 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4848 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4849
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4850 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4851 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4852 else
4853 msg->msg_state = HTTP_MSG_DATA;
4854 }
4855
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4856 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
4857 /* We're in content-length mode, we just have to wait for enough data. */
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4858 if (http_body_bytes(msg) < msg->body_len)
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4859 goto missing_data;
4860
4861 /* OK we have everything we need now */
4862 goto http_end;
4863 }
4864
4865 /* OK here we're parsing a chunked-encoded message */
4866
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4867 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4868 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4869 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4870 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4871 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4872 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4873
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4874 if (!ret)
4875 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4876 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4877 stream_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4878 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4879 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4880 }
4881
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4882 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4883 * We have the first data byte is in msg->sov + msg->sol. We're waiting
4884 * for at least a whole chunk or the whole content length bytes after
4885 * msg->sov + msg->sol.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4886 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4887 if (msg->msg_state == HTTP_MSG_TRAILERS)
4888 goto http_end;
4889
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4890 if (http_body_bytes(msg) >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4891 goto http_end;
4892
4893 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4894 /* we get here if we need to wait for more data. If the buffer is full,
4895 * we have the maximum we can expect.
4896 */
4897 if (buffer_full(req->buf, global.tune.maxrewrite))
4898 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4899
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4900 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4901 txn->status = 408;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4902 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4903
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4904 if (!(s->flags & SF_ERR_MASK))
4905 s->flags |= SF_ERR_CLITO;
4906 if (!(s->flags & SF_FINST_MASK))
4907 s->flags |= SF_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4908 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4909 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4910
4911 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4912 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4913 /* Not enough data. We'll re-use the http-request
4914 * timeout here. Ideally, we should set the timeout
4915 * relative to the accept() date. We just set the
4916 * request timeout once at the beginning of the
4917 * request.
4918 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4919 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4920 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4921 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4922 return 0;
4923 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4924
4925 http_end:
4926 /* The situation will not evolve, so let's give up on the analysis. */
4927 s->logs.tv_request = now; /* update the request timer to reflect full request */
4928 req->analysers &= ~an_bit;
4929 req->analyse_exp = TICK_ETERNITY;
4930 return 1;
4931
4932 return_bad_req: /* let's centralize all bad requests */
4933 txn->req.msg_state = HTTP_MSG_ERROR;
4934 txn->status = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4935 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4936
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4937 if (!(s->flags & SF_ERR_MASK))
4938 s->flags |= SF_ERR_PRXCOND;
4939 if (!(s->flags & SF_FINST_MASK))
4940 s->flags |= SF_FINST_R;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4941
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4942 return_err_msg:
4943 req->analysers = 0;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4944 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4945 if (sess->listener->counters)
4946 sess->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4947 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4948}
4949
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4950/* send a server's name with an outgoing request over an established connection.
4951 * Note: this function is designed to be called once the request has been scheduled
4952 * for being forwarded. This is the reason why it rewinds the buffer before
4953 * proceeding.
4954 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4955int 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]4956
4957 struct hdr_ctx ctx;
4958
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4959 char *hdr_name = be->server_id_hdr_name;
4960 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4961 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4962 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4963 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4964
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4965 ctx.idx = 0;
4966
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]4967 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4968 if (old_o) {
4969 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4970 b_rew(chn->buf, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4971 txn->req.next += old_o;
4972 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4973 }
4974
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4975 old_i = chn->buf->i;
4976 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]4977 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4978 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4979 }
4980
4981 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4982 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4983 memcpy(hdr_val, hdr_name, hdr_name_len);
4984 hdr_val += hdr_name_len;
4985 *hdr_val++ = ':';
4986 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4987 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4988 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]4989
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4990 if (old_o) {
4991 /* If this was a forwarded request, we must readjust the amount of
4992 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4993 * variations. Note that the current state is >= HTTP_MSG_BODY,
4994 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4995 */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4996 old_o += chn->buf->i - old_i;
4997 b_adv(chn->buf, old_o);
4998 txn->req.next -= old_o;
4999 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5000 }
5001
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5002 return 0;
5003}
5004
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5005/* Terminate current transaction and prepare a new one. This is very tricky
5006 * right now but it works.
5007 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5008void http_end_txn_clean_session(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5009{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5010 int prev_status = s->txn->status;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]5011 struct proxy *fe = strm_fe(s);
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5012
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5013 /* FIXME: We need a more portable way of releasing a backend's and a
5014 * server's connections. We need a safer way to reinitialize buffer
5015 * flags. We also need a more accurate method for computing per-request
5016 * data.
5017 */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5018
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5019 /* unless we're doing keep-alive, we want to quickly close the connection
5020 * to the server.
5021 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5022 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5023 !si_conn_ready(&s->si[1])) {
5024 s->si[1].flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
5025 si_shutr(&s->si[1]);
5026 si_shutw(&s->si[1]);
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5027 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5028
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5029 if (s->flags & SF_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5030 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]5031 if (unlikely(s->srv_conn))
5032 sess_change_server(s, NULL);
5033 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5034
5035 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5036 stream_process_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5037
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5038 if (s->txn->status) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5039 int n;
5040
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5041 n = s->txn->status / 100;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5042 if (n < 1 || n > 5)
5043 n = 0;
5044
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5045 if (fe->mode == PR_MODE_HTTP) {
5046 fe->fe_counters.p.http.rsp[n]++;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5047 if (s->comp_algo && (s->flags & SF_COMP_READY))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5048 fe->fe_counters.p.http.comp_rsp++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5049 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5050 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5051 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5052 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5053 s->be->be_counters.p.http.cum_req++;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5054 if (s->comp_algo && (s->flags & SF_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5055 s->be->be_counters.p.http.comp_rsp++;
5056 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5057 }
5058
5059 /* don't count other requests' data */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5060 s->logs.bytes_in -= s->req.buf->i;
5061 s->logs.bytes_out -= s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5062
5063 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5064 if (!LIST_ISEMPTY(&fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5065 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5066 (!(fe->options & PR_O_NULLNOLOG) || s->req.total)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5067 s->do_log(s);
5068 }
5069
Willy Tarreaud713bcc2014-06-25 15:36:04 +0200[diff] [blame]5070 /* stop tracking content-based counters */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5071 stream_stop_content_counters(s);
5072 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +0200[diff] [blame]5073
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5074 s->logs.accept_date = date; /* user-visible date for logging */
5075 s->logs.tv_accept = now; /* corrected date for internal use */
5076 tv_zero(&s->logs.tv_request);
5077 s->logs.t_queue = -1;
5078 s->logs.t_connect = -1;
5079 s->logs.t_data = -1;
5080 s->logs.t_close = 0;
5081 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
5082 s->logs.srv_queue_size = 0; /* we will get this number soon */
5083
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5084 s->logs.bytes_in = s->req.total = s->req.buf->i;
5085 s->logs.bytes_out = s->res.total = s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5086
5087 if (s->pend_pos)
5088 pendconn_free(s->pend_pos);
5089
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5090 if (objt_server(s->target)) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5091 if (s->flags & SF_CURR_SESS) {
5092 s->flags &= ~SF_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5093 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5094 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5095 if (may_dequeue_tasks(objt_server(s->target), s->be))
5096 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5097 }
5098
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5099 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5100
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5101 /* only release our endpoint if we don't intend to reuse the
5102 * connection.
5103 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5104 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5105 !si_conn_ready(&s->si[1])) {
5106 si_release_endpoint(&s->si[1]);
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5107 }
5108
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5109 s->si[1].state = s->si[1].prev_state = SI_ST_INI;
5110 s->si[1].err_type = SI_ET_NONE;
5111 s->si[1].conn_retries = 0; /* used for logging too */
5112 s->si[1].exp = TICK_ETERNITY;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5113 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]5114 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);
5115 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]5116 s->flags &= ~(SF_DIRECT|SF_ASSIGNED|SF_ADDR_SET|SF_BE_ASSIGNED|SF_FORCE_PRST|SF_IGNORE_PRST);
5117 s->flags &= ~(SF_CURR_SESS|SF_REDIRECTABLE|SF_SRV_REUSED);
5118 s->flags &= ~(SF_ERR_MASK|SF_FINST_MASK|SF_REDISP);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]5119
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5120 s->txn->meth = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5121 http_reset_txn(s);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5122 s->txn->flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5123
5124 if (prev_status == 401 || prev_status == 407) {
5125 /* In HTTP keep-alive mode, if we receive a 401, we still have
5126 * a chance of being able to send the visitor again to the same
5127 * server over the same connection. This is required by some
5128 * broken protocols such as NTLM, and anyway whenever there is
5129 * an opportunity for sending the challenge to the proper place,
5130 * it's better to do it (at least it helps with debugging).
5131 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5132 s->txn->flags |= TX_PREFER_LAST;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5133 }
5134
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5135 if (fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5136 s->si[1].flags |= SI_FL_INDEP_STR;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5137
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5138 if (fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5139 s->req.flags |= CF_NEVER_WAIT;
5140 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]5141 }
5142
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5143 /* if the request buffer is not empty, it means we're
5144 * about to process another request, so send pending
5145 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5146 * Just don't do this if the buffer is close to be full,
5147 * because the request will wait for it to flush a little
5148 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5149 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5150 if (s->req.buf->i) {
5151 if (s->res.buf->o &&
5152 !buffer_full(s->res.buf, global.tune.maxrewrite) &&
5153 bi_end(s->res.buf) <= s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)
5154 s->res.flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5155 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5156
5157 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5158 channel_auto_read(&s->req);
5159 channel_auto_close(&s->req);
5160 channel_auto_read(&s->res);
5161 channel_auto_close(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5162
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]5163 /* we're in keep-alive with an idle connection, monitor it */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5164 si_idle_conn(&s->si[1]);
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]5165
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]5166 s->req.analysers = strm_li(s)->analysers;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5167 s->res.analysers = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5168}
5169
5170
5171/* This function updates the request state machine according to the response
5172 * state machine and buffer flags. It returns 1 if it changes anything (flag
5173 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5174 * it is only used to find when a request/response couple is complete. Both
5175 * this function and its equivalent should loop until both return zero. It
5176 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5177 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5178int http_sync_req_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5179{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5180 struct channel *chn = &s->req;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5181 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5182 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5183 unsigned int old_state = txn->req.msg_state;
5184
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5185 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
5186 return 0;
5187
5188 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5189 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5190 * We can shut the read side unless we want to abort_on_close,
5191 * or we have a POST request. The issue with POST requests is
5192 * that some browsers still send a CRLF after the request, and
5193 * this CRLF must be read so that it does not remain in the kernel
5194 * buffers, otherwise a close could cause an RST on some systems
5195 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5196 * Note that if we're using keep-alive on the client side, we'd
5197 * rather poll now and keep the polling enabled for the whole
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5198 * stream's life than enabling/disabling it between each
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5199 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5200 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5201 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5202 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5203 !(s->be->options & PR_O_ABRT_CLOSE) &&
5204 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5205 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5206
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5207 /* if the server closes the connection, we want to immediately react
5208 * and close the socket to save packets and syscalls.
5209 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5210 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5211
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5212 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
5213 goto wait_other_side;
5214
5215 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
5216 /* The server has not finished to respond, so we
5217 * don't want to move in order not to upset it.
5218 */
5219 goto wait_other_side;
5220 }
5221
5222 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
5223 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5224 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5225 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5226 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5227 goto wait_other_side;
5228 }
5229
5230 /* When we get here, it means that both the request and the
5231 * response have finished receiving. Depending on the connection
5232 * mode, we'll have to wait for the last bytes to leave in either
5233 * direction, and sometimes for a close to be effective.
5234 */
5235
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5236 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5237 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5238 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
5239 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5240 }
5241 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5242 /* Option forceclose is set, or either side wants to close,
5243 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5244 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5245 * once both states are CLOSED.
5246 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5247 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5248 channel_shutr_now(chn);
5249 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5250 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5251 }
5252 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5253 /* The last possible modes are keep-alive and tunnel. Tunnel mode
5254 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5255 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5256 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
5257 channel_auto_read(chn);
5258 txn->req.msg_state = HTTP_MSG_TUNNEL;
5259 chn->flags |= CF_NEVER_WAIT;
5260 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5261 }
5262
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5263 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5264 /* if we've just closed an output, let's switch */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5265 s->si[1].flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5266
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5267 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5268 txn->req.msg_state = HTTP_MSG_CLOSING;
5269 goto http_msg_closing;
5270 }
5271 else {
5272 txn->req.msg_state = HTTP_MSG_CLOSED;
5273 goto http_msg_closed;
5274 }
5275 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5276 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5277 }
5278
5279 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
5280 http_msg_closing:
5281 /* nothing else to forward, just waiting for the output buffer
5282 * to be empty and for the shutw_now to take effect.
5283 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5284 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5285 txn->req.msg_state = HTTP_MSG_CLOSED;
5286 goto http_msg_closed;
5287 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5288 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5289 txn->req.msg_state = HTTP_MSG_ERROR;
5290 goto wait_other_side;
5291 }
5292 }
5293
5294 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
5295 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5296 /* see above in MSG_DONE why we only do this in these states */
5297 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5298 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5299 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]5300 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5301 goto wait_other_side;
5302 }
5303
5304 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5305 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5306}
5307
5308
5309/* This function updates the response state machine according to the request
5310 * state machine and buffer flags. It returns 1 if it changes anything (flag
5311 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5312 * it is only used to find when a request/response couple is complete. Both
5313 * this function and its equivalent should loop until both return zero. It
5314 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5315 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5316int http_sync_res_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5317{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5318 struct channel *chn = &s->res;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5319 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5320 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5321 unsigned int old_state = txn->rsp.msg_state;
5322
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5323 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
5324 return 0;
5325
5326 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
5327 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5328 * still monitor the server connection for a possible close
5329 * while the request is being uploaded, so we don't disable
5330 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5331 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5332 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5333
5334 if (txn->req.msg_state == HTTP_MSG_ERROR)
5335 goto wait_other_side;
5336
5337 if (txn->req.msg_state < HTTP_MSG_DONE) {
5338 /* The client seems to still be sending data, probably
5339 * because we got an error response during an upload.
5340 * We have the choice of either breaking the connection
5341 * or letting it pass through. Let's do the later.
5342 */
5343 goto wait_other_side;
5344 }
5345
5346 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
5347 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5348 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5349 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5350 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5351 goto wait_other_side;
5352 }
5353
5354 /* When we get here, it means that both the request and the
5355 * response have finished receiving. Depending on the connection
5356 * mode, we'll have to wait for the last bytes to leave in either
5357 * direction, and sometimes for a close to be effective.
5358 */
5359
5360 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5361 /* Server-close mode : shut read and wait for the request
5362 * side to close its output buffer. The caller will detect
5363 * when we're in DONE and the other is in CLOSED and will
5364 * catch that for the final cleanup.
5365 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5366 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
5367 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5368 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5369 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5370 /* Option forceclose is set, or either side wants to close,
5371 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5372 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5373 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5374 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5375 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5376 channel_shutr_now(chn);
5377 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5378 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5379 }
5380 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5381 /* The last possible modes are keep-alive and tunnel. Tunnel will
5382 * need to forward remaining data. Keep-alive will need to monitor
5383 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5384 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5385 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5386 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5387 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
5388 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5389 }
5390
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5391 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5392 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5393 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5394 txn->rsp.msg_state = HTTP_MSG_CLOSING;
5395 goto http_msg_closing;
5396 }
5397 else {
5398 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5399 goto http_msg_closed;
5400 }
5401 }
5402 goto wait_other_side;
5403 }
5404
5405 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
5406 http_msg_closing:
5407 /* nothing else to forward, just waiting for the output buffer
5408 * to be empty and for the shutw_now to take effect.
5409 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5410 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5411 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5412 goto http_msg_closed;
5413 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5414 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5415 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5416 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5417 if (objt_server(s->target))
5418 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5419 goto wait_other_side;
5420 }
5421 }
5422
5423 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
5424 http_msg_closed:
5425 /* drop any pending data */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5426 channel_truncate(chn);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5427 channel_auto_close(chn);
5428 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5429 goto wait_other_side;
5430 }
5431
5432 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5433 /* We force the response to leave immediately if we're waiting for the
5434 * other side, since there is no pending shutdown to push it out.
5435 */
5436 if (!channel_is_empty(chn))
5437 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5438 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5439}
5440
5441
5442/* Resync the request and response state machines. Return 1 if either state
5443 * changes.
5444 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5445int http_resync_states(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5446{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5447 struct http_txn *txn = s->txn;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5448 int old_req_state = txn->req.msg_state;
5449 int old_res_state = txn->rsp.msg_state;
5450
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5451 http_sync_req_state(s);
5452 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5453 if (!http_sync_res_state(s))
5454 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5455 if (!http_sync_req_state(s))
5456 break;
5457 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]5458
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5459 /* OK, both state machines agree on a compatible state.
5460 * There are a few cases we're interested in :
5461 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
5462 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
5463 * directions, so let's simply disable both analysers.
5464 * - HTTP_MSG_CLOSED on the response only means we must abort the
5465 * request.
5466 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
5467 * with server-close mode means we've completed one request and we
5468 * must re-initialize the server connection.
5469 */
5470
5471 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
5472 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
5473 (txn->req.msg_state == HTTP_MSG_CLOSED &&
5474 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5475 s->req.analysers = 0;
5476 channel_auto_close(&s->req);
5477 channel_auto_read(&s->req);
5478 s->res.analysers = 0;
5479 channel_auto_close(&s->res);
5480 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5481 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5482 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5483 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->res.flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]5484 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5485 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5486 s->res.analysers = 0;
5487 channel_auto_close(&s->res);
5488 channel_auto_read(&s->res);
5489 s->req.analysers = 0;
5490 channel_abort(&s->req);
5491 channel_auto_close(&s->req);
5492 channel_auto_read(&s->req);
5493 channel_truncate(&s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5494 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5495 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
5496 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5497 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5498 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
5499 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
5500 /* server-close/keep-alive: terminate this transaction,
5501 * possibly killing the server connection and reinitialize
5502 * a fresh-new transaction.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5503 */
5504 http_end_txn_clean_session(s);
5505 }
5506
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5507 return txn->req.msg_state != old_req_state ||
5508 txn->rsp.msg_state != old_res_state;
5509}
5510
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5511/* This function is an analyser which forwards request body (including chunk
5512 * sizes if any). It is called as soon as we must forward, even if we forward
5513 * zero byte. The only situation where it must not be called is when we're in
5514 * tunnel mode and we want to forward till the close. It's used both to forward
5515 * remaining data and to resync after end of body. It expects the msg_state to
5516 * 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]5517 * 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]5518 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5519 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5520 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5521int http_request_forward_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5522{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5523 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5524 struct http_txn *txn = s->txn;
5525 struct http_msg *msg = &s->txn->req;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5526
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5527 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5528 return 0;
5529
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5530 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]5531 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5532 /* Output closed while we were sending data. We must abort and
5533 * wake the other side up.
5534 */
5535 msg->msg_state = HTTP_MSG_ERROR;
5536 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5537 return 1;
5538 }
5539
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5540 /* Note that we don't have to send 100-continue back because we don't
5541 * need the data to complete our job, and it's up to the server to
5542 * decide whether to return 100, 417 or anything else in return of
5543 * an "Expect: 100-continue" header.
5544 */
5545
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]5546 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5547 /* we have msg->sov which points to the first byte of message
5548 * body, and req->buf.p still points to the beginning of the
5549 * message. We forward the headers now, as we don't need them
5550 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5551 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5552 b_adv(req->buf, msg->sov);
5553 msg->next -= msg->sov;
5554 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5555
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5556 /* The previous analysers guarantee that the state is somewhere
5557 * between MSG_BODY and the first MSG_DATA. So msg->sol and
5558 * msg->next are always correct.
5559 */
5560 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
5561 if (msg->flags & HTTP_MSGF_TE_CHNK)
5562 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
5563 else
5564 msg->msg_state = HTTP_MSG_DATA;
5565 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5566 }
5567
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5568 /* Some post-connect processing might want us to refrain from starting to
5569 * forward data. Currently, the only reason for this is "balance url_param"
5570 * whichs need to parse/process the request after we've enabled forwarding.
5571 */
5572 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5573 if (!(s->res.flags & CF_READ_ATTACHED)) {
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5574 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +0200[diff] [blame]5575 req->flags |= CF_WAKE_CONNECT;
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5576 goto missing_data;
5577 }
5578 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5579 }
5580
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5581 /* in most states, we should abort in case of early close */
5582 channel_auto_close(req);
5583
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5584 if (req->to_forward) {
5585 /* We can't process the buffer's contents yet */
5586 req->flags |= CF_WAKE_WRITE;
5587 goto missing_data;
5588 }
5589
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5590 while (1) {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5591 if (msg->msg_state == HTTP_MSG_DATA) {
5592 /* must still forward */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5593 /* we may have some pending data starting at req->buf->p */
5594 if (msg->chunk_len > req->buf->i - msg->next) {
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5595 req->flags |= CF_WAKE_WRITE;
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5596 goto missing_data;
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5597 }
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5598 msg->next += msg->chunk_len;
5599 msg->chunk_len = 0;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5600
5601 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5602 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5603 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5604 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5605 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5606 }
5607 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5608 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5609 * set ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5610 * TRAILERS state.
5611 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5612 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5613
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5614 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5615 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5616 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5617 stream_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5618 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5619 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]5620 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5621 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5622 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5623 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5624 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5625 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5626 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5627
5628 if (ret == 0)
5629 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5630 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5631 stream_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5632 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5633 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]5634 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5635 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5636 /* we're in MSG_CHUNK_SIZE now */
5637 }
5638 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5639 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5640
5641 if (ret == 0)
5642 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5643 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5644 stream_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5645 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5646 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]5647 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5648 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5649 /* we're in HTTP_MSG_DONE now */
5650 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5651 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5652 int old_state = msg->msg_state;
5653
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5654 /* other states, DONE...TUNNEL */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5655
5656 /* we may have some pending data starting at req->buf->p
5657 * such as last chunk of data or trailers.
5658 */
5659 b_adv(req->buf, msg->next);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5660 if (unlikely(!(s->req.flags & CF_WROTE_DATA)))
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]5661 msg->sov -= msg->next;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5662 msg->next = 0;
5663
Willy Tarreaubbfb6c42015-05-11 18:30:33 +0200[diff] [blame]5664 /* we don't want to forward closes on DONE except in
5665 * tunnel mode.
5666 */
5667 if ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5668 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5669 if (http_resync_states(s)) {
5670 /* some state changes occurred, maybe the analyser
5671 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]5672 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5673 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5674 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5675 /* request errors are most likely due to
5676 * the server aborting the transfer.
5677 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5678 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5679 }
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, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5682 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5683 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5684 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5685 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5686
5687 /* If "option abortonclose" is set on the backend, we
5688 * want to monitor the client's connection and forward
5689 * any shutdown notification to the server, which will
5690 * decide whether to close or to go on processing the
Willy Tarreaubbfb6c42015-05-11 18:30:33 +0200[diff] [blame]5691 * request. We only do that in tunnel mode, and not in
5692 * other modes since it can be abused to exhaust source
5693 * ports.
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5694 */
5695 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5696 channel_auto_read(req);
Willy Tarreaubbfb6c42015-05-11 18:30:33 +0200[diff] [blame]5697 if ((req->flags & (CF_SHUTR|CF_READ_NULL)) &&
5698 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN))
5699 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5700 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5701 }
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5702 else if (s->txn->meth == HTTP_METH_POST) {
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5703 /* POST requests may require to read extra CRLF
5704 * sent by broken browsers and which could cause
5705 * an RST to be sent upon close on some systems
5706 * (eg: Linux).
5707 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5708 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5709 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5710
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5711 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5712 }
5713 }
5714
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5715 missing_data:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5716 /* we may have some pending data starting at req->buf->p */
5717 b_adv(req->buf, msg->next);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5718 if (unlikely(!(s->req.flags & CF_WROTE_DATA)))
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]5719 msg->sov -= msg->next + MIN(msg->chunk_len, req->buf->i);
5720
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5721 msg->next = 0;
5722 msg->chunk_len -= channel_forward(req, msg->chunk_len);
5723
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5724 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5725 if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5726 if (!(s->flags & SF_ERR_MASK))
5727 s->flags |= SF_ERR_CLICL;
5728 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5729 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5730 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5731 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5732 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5733 }
5734
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5735 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5736 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5737 if (objt_server(s->target))
5738 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5739
5740 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5741 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5742
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5743 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5744 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5745 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5746
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5747 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5748 * 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]5749 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5750 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5751 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5752
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5753 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5754 * 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]5755 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5756 * modes are already handled by the stream sock layer. We must not do
5757 * this in content-length mode because it could present the MSG_MORE
5758 * flag with the last block of forwarded data, which would cause an
5759 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5760 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5761 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5762 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5763
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5764 return 0;
5765
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5766 return_bad_req: /* let's centralize all bad requests */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5767 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5768 if (sess->listener->counters)
5769 sess->listener->counters->failed_req++;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5770
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5771 return_bad_req_stats_ok:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5772 /* we may have some pending data starting at req->buf->p */
5773 b_adv(req->buf, msg->next);
5774 msg->next = 0;
5775
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5776 txn->req.msg_state = HTTP_MSG_ERROR;
5777 if (txn->status) {
5778 /* Note: we don't send any error if some data were already sent */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5779 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5780 } else {
5781 txn->status = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5782 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5783 }
5784 req->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5785 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]5786
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5787 if (!(s->flags & SF_ERR_MASK))
5788 s->flags |= SF_ERR_PRXCOND;
5789 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5790 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5791 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5792 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5793 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5794 }
5795 return 0;
5796
5797 aborted_xfer:
5798 txn->req.msg_state = HTTP_MSG_ERROR;
5799 if (txn->status) {
5800 /* Note: we don't send any error if some data were already sent */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5801 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5802 } else {
5803 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5804 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5805 }
5806 req->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5807 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]5808
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5809 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5810 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5811 if (objt_server(s->target))
5812 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5813
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5814 if (!(s->flags & SF_ERR_MASK))
5815 s->flags |= SF_ERR_SRVCL;
5816 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5817 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5818 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5819 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5820 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5821 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5822 return 0;
5823}
5824
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5825/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5826 * processing can continue on next analysers, or zero if it either needs more
5827 * data or wants to immediately abort the response (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5828 * 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]5829 * when it has nothing left to do, and may remove any analyser when it wants to
5830 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5831 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5832int http_wait_for_response(struct stream *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5833{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5834 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5835 struct http_txn *txn = s->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5836 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5837 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5838 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5839 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5840 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5841
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5842 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]5843 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5844 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5845 rep,
5846 rep->rex, rep->wex,
5847 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5848 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5849 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5850
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5851 /*
5852 * Now parse the partial (or complete) lines.
5853 * We will check the response syntax, and also join multi-line
5854 * headers. An index of all the lines will be elaborated while
5855 * parsing.
5856 *
5857 * For the parsing, we use a 28 states FSM.
5858 *
5859 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5860 * rep->buf->p = beginning of response
5861 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5862 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5863 * msg->eol = end of current header or line (LF or CRLF)
5864 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5865 */
5866
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5867 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5868 /* There's a protected area at the end of the buffer for rewriting
5869 * purposes. We don't want to start to parse the request if the
5870 * protected area is affected, because we may have to move processed
5871 * data later, which is much more complicated.
5872 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5873 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]5874 if (unlikely(!channel_is_rewritable(rep))) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5875 /* some data has still not left the buffer, wake us once that's done */
5876 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5877 goto abort_response;
5878 channel_dont_close(rep);
5879 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5880 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5881 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5882 }
5883
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5884 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5885 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5886 buffer_slow_realign(rep->buf);
5887
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5888 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5889 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5890 }
5891
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5892 /* 1: we might have to print this header in debug mode */
5893 if (unlikely((global.mode & MODE_DEBUG) &&
5894 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]5895 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5896 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5897
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5898 sol = rep->buf->p;
5899 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5900 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5901
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5902 sol += hdr_idx_first_pos(&txn->hdr_idx);
5903 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5904
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5905 while (cur_idx) {
5906 eol = sol + txn->hdr_idx.v[cur_idx].len;
5907 debug_hdr("srvhdr", s, sol, eol);
5908 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5909 cur_idx = txn->hdr_idx.v[cur_idx].next;
5910 }
5911 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5912
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5913 /*
5914 * Now we quickly check if we have found a full valid response.
5915 * If not so, we check the FD and buffer states before leaving.
5916 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5917 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5918 * responses are checked first.
5919 *
5920 * Depending on whether the client is still there or not, we
5921 * may send an error response back or not. Note that normally
5922 * we should only check for HTTP status there, and check I/O
5923 * errors somewhere else.
5924 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5925
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5926 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5927 /* Invalid response */
5928 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5929 /* we detected a parsing error. We want to archive this response
5930 * in the dedicated proxy area for later troubleshooting.
5931 */
5932 hdr_response_bad:
5933 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5934 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]5935
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5936 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5937 if (objt_server(s->target)) {
5938 objt_server(s->target)->counters.failed_resp++;
5939 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5940 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5941 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5942 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5943 rep->analysers = 0;
5944 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5945 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5946 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5947 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5948
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5949 if (!(s->flags & SF_ERR_MASK))
5950 s->flags |= SF_ERR_PRXCOND;
5951 if (!(s->flags & SF_FINST_MASK))
5952 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5953
5954 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5955 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5956
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5957 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5958 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5959 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5960 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5961 goto hdr_response_bad;
5962 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5963
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5964 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5965 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5966 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5967 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]5968 else if (txn->flags & TX_NOT_FIRST)
5969 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +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_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5975 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5976
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 Tarreau816b9792009-09-15 21:25:21 +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_SRVCL;
5986 if (!(s->flags & SF_FINST_MASK))
5987 s->flags |= SF_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5988 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5989 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5990
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +0200[diff] [blame]5991 /* read timeout : return a 504 to the client. */
5992 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5993 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5994 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]5995 else if (txn->flags & TX_NOT_FIRST)
5996 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5997
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5998 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5999 if (objt_server(s->target)) {
6000 objt_server(s->target)->counters.failed_resp++;
6001 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6002 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6003
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6004 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6005 rep->analysers = 0;
6006 txn->status = 504;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6007 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6008 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6009 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]6010
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6011 if (!(s->flags & SF_ERR_MASK))
6012 s->flags |= SF_ERR_SRVTO;
6013 if (!(s->flags & SF_FINST_MASK))
6014 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6015 return 0;
6016 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]6017
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6018 /* client abort with an abortonclose */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6019 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]6020 sess->fe->fe_counters.cli_aborts++;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6021 s->be->be_counters.cli_aborts++;
6022 if (objt_server(s->target))
6023 objt_server(s->target)->counters.cli_aborts++;
6024
6025 rep->analysers = 0;
6026 channel_auto_close(rep);
6027
6028 txn->status = 400;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6029 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6030 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6031
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6032 if (!(s->flags & SF_ERR_MASK))
6033 s->flags |= SF_ERR_CLICL;
6034 if (!(s->flags & SF_FINST_MASK))
6035 s->flags |= SF_FINST_H;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6036
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6037 /* process_stream() will take care of the error */
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6038 return 0;
6039 }
6040
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]6041 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6042 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]6043 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6044 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]6045 else if (txn->flags & TX_NOT_FIRST)
6046 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6047
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6048 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6049 if (objt_server(s->target)) {
6050 objt_server(s->target)->counters.failed_resp++;
6051 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6052 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6053
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6054 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6055 rep->analysers = 0;
6056 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6057 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6058 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6059 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6060
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6061 if (!(s->flags & SF_ERR_MASK))
6062 s->flags |= SF_ERR_SRVCL;
6063 if (!(s->flags & SF_FINST_MASK))
6064 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6065 return 0;
6066 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]6067
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6068 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6069 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6070 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6071 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]6072 else if (txn->flags & TX_NOT_FIRST)
6073 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]6074
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6075 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6076 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6077 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6078
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6079 if (!(s->flags & SF_ERR_MASK))
6080 s->flags |= SF_ERR_CLICL;
6081 if (!(s->flags & SF_FINST_MASK))
6082 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6083
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6084 /* process_stream() will take care of the error */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6085 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6086 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6087
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6088 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]6089 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6090 return 0;
6091 }
6092
6093 /* More interesting part now : we know that we have a complete
6094 * response which at least looks like HTTP. We have an indicator
6095 * of each header's length, so we can parse them quickly.
6096 */
6097
6098 if (unlikely(msg->err_pos >= 0))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6099 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]6100
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6101 /*
6102 * 1: get the status code
6103 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6104 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6105 if (n < 1 || n > 5)
6106 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6107 /* when the client triggers a 4xx from the server, it's most often due
6108 * to a missing object or permission. These events should be tracked
6109 * because if they happen often, it may indicate a brute force or a
6110 * vulnerability scan.
6111 */
6112 if (n == 4)
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6113 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6114
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6115 if (objt_server(s->target))
6116 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6117
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]6118 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
6119 * exactly one digit "." one digit. This check may be disabled using
6120 * option accept-invalid-http-response.
6121 */
6122 if (!(s->be->options2 & PR_O2_RSPBUG_OK)) {
6123 if (msg->sl.st.v_l != 8) {
6124 msg->err_pos = 0;
6125 goto hdr_response_bad;
6126 }
6127
6128 if (rep->buf->p[4] != '/' ||
6129 !isdigit((unsigned char)rep->buf->p[5]) ||
6130 rep->buf->p[6] != '.' ||
6131 !isdigit((unsigned char)rep->buf->p[7])) {
6132 msg->err_pos = 4;
6133 goto hdr_response_bad;
6134 }
6135 }
6136
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6137 /* check if the response is HTTP/1.1 or above */
6138 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6139 ((rep->buf->p[5] > '1') ||
6140 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6141 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6142
6143 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]6144 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]6145
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6146 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6147 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6148
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6149 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]6150
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]6151 /* Adjust server's health based on status code. Note: status codes 501
6152 * and 505 are triggered on demand by client request, so we must not
6153 * count them as server failures.
6154 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6155 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6156 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6157 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6158 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6159 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6160 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6161
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6162 /*
6163 * 2: check for cacheability.
6164 */
6165
6166 switch (txn->status) {
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]6167 case 100:
6168 /*
6169 * We may be facing a 100-continue response, in which case this
6170 * is not the right response, and we're waiting for the next one.
6171 * Let's allow this response to go to the client and wait for the
6172 * next one.
6173 */
6174 hdr_idx_init(&txn->hdr_idx);
6175 msg->next -= channel_forward(rep, msg->next);
6176 msg->msg_state = HTTP_MSG_RPBEFORE;
6177 txn->status = 0;
6178 s->logs.t_data = -1; /* was not a response yet */
6179 goto next_one;
6180
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6181 case 200:
6182 case 203:
6183 case 206:
6184 case 300:
6185 case 301:
6186 case 410:
6187 /* RFC2616 @13.4:
6188 * "A response received with a status code of
6189 * 200, 203, 206, 300, 301 or 410 MAY be stored
6190 * by a cache (...) unless a cache-control
6191 * directive prohibits caching."
6192 *
6193 * RFC2616 @9.5: POST method :
6194 * "Responses to this method are not cacheable,
6195 * unless the response includes appropriate
6196 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6197 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6198 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6199 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6200 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
6201 break;
6202 default:
6203 break;
6204 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6205
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6206 /*
6207 * 3: we may need to capture headers
6208 */
6209 s->logs.logwait &= ~LW_RESP;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6210 if (unlikely((s->logs.logwait & LW_RSPHDR) && s->res_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6211 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6212 s->res_cap, sess->fe->rsp_cap);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6213
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6214 /* 4: determine the transfer-length according to RFC2616 #4.4, updated
6215 * by RFC7230#3.3.3 :
6216 *
6217 * The length of a message body is determined by one of the following
6218 * (in order of precedence):
6219 *
6220 * 1. Any response to a HEAD request and any response with a 1xx
6221 * (Informational), 204 (No Content), or 304 (Not Modified) status
6222 * code is always terminated by the first empty line after the
6223 * header fields, regardless of the header fields present in the
6224 * message, and thus cannot contain a message body.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6225 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6226 * 2. Any 2xx (Successful) response to a CONNECT request implies that
6227 * the connection will become a tunnel immediately after the empty
6228 * line that concludes the header fields. A client MUST ignore any
6229 * Content-Length or Transfer-Encoding header fields received in
6230 * such a message.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6231 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6232 * 3. If a Transfer-Encoding header field is present and the chunked
6233 * transfer coding (Section 4.1) is the final encoding, the message
6234 * body length is determined by reading and decoding the chunked
6235 * data until the transfer coding indicates the data is complete.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6236 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6237 * If a Transfer-Encoding header field is present in a response and
6238 * the chunked transfer coding is not the final encoding, the
6239 * message body length is determined by reading the connection until
6240 * it is closed by the server. If a Transfer-Encoding header field
6241 * is present in a request and the chunked transfer coding is not
6242 * the final encoding, the message body length cannot be determined
6243 * reliably; the server MUST respond with the 400 (Bad Request)
6244 * status code and then close the connection.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6245 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6246 * If a message is received with both a Transfer-Encoding and a
6247 * Content-Length header field, the Transfer-Encoding overrides the
6248 * Content-Length. Such a message might indicate an attempt to
6249 * perform request smuggling (Section 9.5) or response splitting
6250 * (Section 9.4) and ought to be handled as an error. A sender MUST
6251 * remove the received Content-Length field prior to forwarding such
6252 * a message downstream.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6253 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6254 * 4. If a message is received without Transfer-Encoding and with
6255 * either multiple Content-Length header fields having differing
6256 * field-values or a single Content-Length header field having an
6257 * invalid value, then the message framing is invalid and the
6258 * recipient MUST treat it as an unrecoverable error. If this is a
6259 * request message, the server MUST respond with a 400 (Bad Request)
6260 * status code and then close the connection. If this is a response
6261 * message received by a proxy, the proxy MUST close the connection
6262 * to the server, discard the received response, and send a 502 (Bad
6263 * Gateway) response to the client. If this is a response message
6264 * received by a user agent, the user agent MUST close the
6265 * connection to the server and discard the received response.
6266 *
6267 * 5. If a valid Content-Length header field is present without
6268 * Transfer-Encoding, its decimal value defines the expected message
6269 * body length in octets. If the sender closes the connection or
6270 * the recipient times out before the indicated number of octets are
6271 * received, the recipient MUST consider the message to be
6272 * incomplete and close the connection.
6273 *
6274 * 6. If this is a request message and none of the above are true, then
6275 * the message body length is zero (no message body is present).
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6276 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6277 * 7. Otherwise, this is a response message without a declared message
6278 * body length, so the message body length is determined by the
6279 * number of octets received prior to the server closing the
6280 * connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6281 */
6282
6283 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6284 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6285 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6286 * FIXME: should we parse anyway and return an error on chunked encoding ?
6287 */
6288 if (txn->meth == HTTP_METH_HEAD ||
6289 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6290 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6291 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]6292 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6293 goto skip_content_length;
6294 }
6295
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6296 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6297 ctx.idx = 0;
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]6298 while (http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6299 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6300 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
6301 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6302 /* bad transfer-encoding (chunked followed by something else) */
6303 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6304 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6305 break;
6306 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6307 }
6308
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6309 /* Chunked responses must have their content-length removed */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6310 ctx.idx = 0;
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6311 if (use_close_only || (msg->flags & HTTP_MSGF_TE_CHNK)) {
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6312 while (http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx))
6313 http_remove_header2(msg, &txn->hdr_idx, &ctx);
6314 }
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6315 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]6316 signed long long cl;
6317
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6318 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6319 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6320 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6321 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6322
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6323 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6324 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6325 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6326 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6327
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6328 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6329 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6330 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6331 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6332
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6333 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6334 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6335 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6336 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6337
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6338 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6339 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6340 }
6341
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6342 if (sess->fe->comp || s->be->comp)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6343 select_compression_response_header(s, rep->buf);
6344
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6345skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6346 /* Now we have to check if we need to modify the Connection header.
6347 * This is more difficult on the response than it is on the request,
6348 * because we can have two different HTTP versions and we don't know
6349 * how the client will interprete a response. For instance, let's say
6350 * that the client sends a keep-alive request in HTTP/1.0 and gets an
6351 * HTTP/1.1 response without any header. Maybe it will bound itself to
6352 * HTTP/1.0 because it only knows about it, and will consider the lack
6353 * of header as a close, or maybe it knows HTTP/1.1 and can consider
6354 * the lack of header as a keep-alive. Thus we will use two flags
6355 * indicating how a request MAY be understood by the client. In case
6356 * of multiple possibilities, we'll fix the header to be explicit. If
6357 * ambiguous cases such as both close and keepalive are seen, then we
6358 * will fall back to explicit close. Note that we won't take risks with
6359 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6360 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6361 */
6362
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6363 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
6364 txn->status == 101)) {
6365 /* Either we've established an explicit tunnel, or we're
6366 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6367 * to understand the next protocols. We have to switch to tunnel
6368 * mode, so that we transfer the request and responses then let
6369 * this protocol pass unmodified. When we later implement specific
6370 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6371 * header which contains information about that protocol for
6372 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6373 */
6374 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
6375 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6376 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
6377 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6378 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6379 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6380 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6381
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6382 /* this situation happens when combining pretend-keepalive with httpclose. */
6383 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6384 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6385 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6386 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
6387
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6388 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6389 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6390 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
6391 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6392
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6393 /* now adjust header transformations depending on current state */
6394 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
6395 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
6396 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6397 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6398 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6399 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6400 else { /* SCL / KAL */
6401 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6402 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6403 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6404 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6405
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6406 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6407 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6408
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6409 /* Some keep-alive responses are converted to Server-close if
6410 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6411 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6412 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
6413 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6414 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6415 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6416 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6417 }
6418
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6419 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6420 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6421
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6422 /* end of job, return OK */
6423 rep->analysers &= ~an_bit;
6424 rep->analyse_exp = TICK_ETERNITY;
6425 channel_auto_close(rep);
6426 return 1;
6427
6428 abort_keep_alive:
6429 /* A keep-alive request to the server failed on a network error.
6430 * The client is required to retry. We need to close without returning
6431 * any other information so that the client retries.
6432 */
6433 txn->status = 0;
6434 rep->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6435 s->req.analysers = 0;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6436 channel_auto_close(rep);
6437 s->logs.logwait = 0;
6438 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6439 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6440 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6441 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6442 return 0;
6443}
6444
6445/* This function performs all the processing enabled for the current response.
6446 * It normally returns 1 unless it wants to break. It relies on buffers flags,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6447 * and updates s->res.analysers. It might make sense to explode it into several
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6448 * other functions. It works like process_request (see indications above).
6449 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6450int 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]6451{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6452 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6453 struct http_txn *txn = s->txn;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6454 struct http_msg *msg = &txn->rsp;
6455 struct proxy *cur_proxy;
6456 struct cond_wordlist *wl;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]6457 enum rule_result ret = HTTP_RULE_RES_CONT;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6458
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6459 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]6460 now_ms, __FUNCTION__,
6461 s,
6462 rep,
6463 rep->rex, rep->wex,
6464 rep->flags,
6465 rep->buf->i,
6466 rep->analysers);
6467
6468 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
6469 return 0;
6470
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6471 /* The stats applet needs to adjust the Connection header but we don't
6472 * apply any filter there.
6473 */
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6474 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
6475 rep->analysers &= ~an_bit;
6476 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6477 goto skip_filters;
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6478 }
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6479
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6480 /*
6481 * We will have to evaluate the filters.
6482 * As opposed to version 1.2, now they will be evaluated in the
6483 * filters order and not in the header order. This means that
6484 * each filter has to be validated among all headers.
6485 *
6486 * Filters are tried with ->be first, then with ->fe if it is
6487 * different from ->be.
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6488 *
6489 * Maybe we are in resume condiion. In this case I choose the
6490 * "struct proxy" which contains the rule list matching the resume
6491 * pointer. If none of theses "struct proxy" match, I initialise
6492 * the process with the first one.
6493 *
6494 * In fact, I check only correspondance betwwen the current list
6495 * pointer and the ->fe rule list. If it doesn't match, I initialize
6496 * the loop with the ->be.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6497 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6498 if (s->current_rule_list == &sess->fe->http_res_rules)
6499 cur_proxy = sess->fe;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6500 else
6501 cur_proxy = s->be;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6502 while (1) {
6503 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6504
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6505 /* evaluate http-response rules */
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6506 if (ret == HTTP_RULE_RES_CONT) {
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]6507 ret = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, s);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]6508
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6509 if (ret == HTTP_RULE_RES_BADREQ)
6510 goto return_srv_prx_502;
6511
6512 if (ret == HTTP_RULE_RES_DONE) {
6513 rep->analysers &= ~an_bit;
6514 rep->analyse_exp = TICK_ETERNITY;
6515 return 1;
6516 }
6517 }
6518
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6519 /* we need to be called again. */
6520 if (ret == HTTP_RULE_RES_YIELD) {
6521 channel_dont_close(rep);
6522 return 0;
6523 }
6524
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6525 /* try headers filters */
6526 if (rule_set->rsp_exp != NULL) {
6527 if (apply_filters_to_response(s, rep, rule_set) < 0) {
6528 return_bad_resp:
6529 if (objt_server(s->target)) {
6530 objt_server(s->target)->counters.failed_resp++;
6531 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6532 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6533 s->be->be_counters.failed_resp++;
6534 return_srv_prx_502:
6535 rep->analysers = 0;
6536 txn->status = 502;
6537 s->logs.t_data = -1; /* was not a valid response */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6538 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6539 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6540 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6541 if (!(s->flags & SF_ERR_MASK))
6542 s->flags |= SF_ERR_PRXCOND;
6543 if (!(s->flags & SF_FINST_MASK))
6544 s->flags |= SF_FINST_H;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6545 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6546 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6547 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6548
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6549 /* has the response been denied ? */
6550 if (txn->flags & TX_SVDENY) {
6551 if (objt_server(s->target))
6552 objt_server(s->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6553
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6554 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6555 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6556 if (sess->listener->counters)
6557 sess->listener->counters->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6558
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6559 goto return_srv_prx_502;
6560 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]6561
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6562 /* add response headers from the rule sets in the same order */
6563 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6564 if (txn->status < 200 && txn->status != 101)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6565 break;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6566 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]6567 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]6568 ret = acl_pass(ret);
6569 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
6570 ret = !ret;
6571 if (!ret)
6572 continue;
6573 }
6574 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
6575 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6576 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6577
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6578 /* check whether we're already working on the frontend */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6579 if (cur_proxy == sess->fe)
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6580 break;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6581 cur_proxy = sess->fe;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6582 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6583
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6584 /* After this point, this anayzer can't return yield, so we can
6585 * remove the bit corresponding to this analyzer from the list.
6586 *
6587 * Note that the intermediate returns and goto found previously
6588 * reset the analyzers.
6589 */
6590 rep->analysers &= ~an_bit;
6591 rep->analyse_exp = TICK_ETERNITY;
6592
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6593 /* OK that's all we can do for 1xx responses */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6594 if (unlikely(txn->status < 200 && txn->status != 101))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6595 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6596
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6597 /*
6598 * Now check for a server cookie.
6599 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6600 if (s->be->cookie_name || s->be->appsession_name || sess->fe->capture_name ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6601 (s->be->options & PR_O_CHK_CACHE))
6602 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6603
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6604 /*
6605 * Check for cache-control or pragma headers if required.
6606 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6607 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]6608 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6609
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6610 /*
6611 * Add server cookie in the response if needed
6612 */
6613 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
6614 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6615 (!(s->flags & SF_DIRECT) ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6616 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
6617 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
6618 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
6619 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
6620 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6621 !(s->flags & SF_IGNORE_PRST)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6622 /* the server is known, it's not the one the client requested, or the
6623 * cookie's last seen date needs to be refreshed. We have to
6624 * insert a set-cookie here, except if we want to insert only on POST
6625 * requests and this one isn't. Note that servers which don't have cookies
6626 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6627 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6628 if (!objt_server(s->target)->cookie) {
6629 chunk_printf(&trash,
6630 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
6631 s->be->cookie_name);
6632 }
6633 else {
6634 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]6635
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6636 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
6637 /* emit last_date, which is mandatory */
6638 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6639 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6640 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6641
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6642 if (s->be->cookie_maxlife) {
6643 /* emit first_date, which is either the original one or
6644 * the current date.
6645 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6646 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6647 s30tob64(txn->cookie_first_date ?
6648 txn->cookie_first_date >> 2 :
6649 (date.tv_sec+3) >> 2, trash.str + trash.len);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6650 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6651 }
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6652 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6653 chunk_appendf(&trash, "; path=/");
6654 }
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6655
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6656 if (s->be->cookie_domain)
6657 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6658
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6659 if (s->be->ck_opts & PR_CK_HTTPONLY)
6660 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6661
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6662 if (s->be->ck_opts & PR_CK_SECURE)
6663 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6664
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6665 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
6666 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6667
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6668 txn->flags &= ~TX_SCK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6669 if (objt_server(s->target)->cookie && (s->flags & SF_DIRECT))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6670 /* the server did not change, only the date was updated */
6671 txn->flags |= TX_SCK_UPDATED;
6672 else
6673 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6674
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6675 /* Here, we will tell an eventual cache on the client side that we don't
6676 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6677 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6678 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6679 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6680 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6681
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6682 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6683
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6684 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
6685 "Cache-control: private", 22) < 0))
6686 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6687 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6688 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6689
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6690 /*
6691 * Check if result will be cacheable with a cookie.
6692 * We'll block the response if security checks have caught
6693 * nasty things such as a cacheable cookie.
6694 */
6695 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6696 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
6697 (s->be->options & PR_O_CHK_CACHE)) {
6698 /* we're in presence of a cacheable response containing
6699 * a set-cookie header. We'll block it as requested by
6700 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6701 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6702 if (objt_server(s->target))
6703 objt_server(s->target)->counters.failed_secu++;
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6704
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6705 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6706 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6707 if (sess->listener->counters)
6708 sess->listener->counters->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6709
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6710 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
6711 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6712 send_log(s->be, LOG_ALERT,
6713 "Blocking cacheable cookie in response from instance %s, server %s.\n",
6714 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6715 goto return_srv_prx_502;
6716 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6717
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6718 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6719 /*
6720 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
6721 * If an "Upgrade" token is found, the header is left untouched in order
6722 * 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]6723 * if anything but "Upgrade" is present in the Connection header. We don't
6724 * want to touch any 101 response either since it's switching to another
6725 * protocol.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6726 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6727 if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) &&
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6728 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6729 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6730 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
6731 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6732
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6733 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6734 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6735 /* we want a keep-alive response here. Keep-alive header
6736 * required if either side is not 1.1.
6737 */
6738 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
6739 want_flags |= TX_CON_KAL_SET;
6740 }
6741 else {
6742 /* we want a close response here. Close header required if
6743 * the server is 1.1, regardless of the client.
6744 */
6745 if (msg->flags & HTTP_MSGF_VER_11)
6746 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6747 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6748
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6749 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
6750 http_change_connection_header(txn, msg, want_flags);
6751 }
6752
6753 skip_header_mangling:
6754 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
6755 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
6756 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6757
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6758 /* if the user wants to log as soon as possible, without counting
6759 * bytes from the server, then this is the right moment. We have
6760 * to temporarily assign bytes_out to log what we currently have.
6761 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6762 if (!LIST_ISEMPTY(&sess->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6763 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
6764 s->logs.bytes_out = txn->rsp.eoh;
6765 s->do_log(s);
6766 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6767 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6768 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6769}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6770
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6771/* This function is an analyser which forwards response body (including chunk
6772 * sizes if any). It is called as soon as we must forward, even if we forward
6773 * zero byte. The only situation where it must not be called is when we're in
6774 * tunnel mode and we want to forward till the close. It's used both to forward
6775 * remaining data and to resync after end of body. It expects the msg_state to
6776 * 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]6777 * 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]6778 *
6779 * It is capable of compressing response data both in content-length mode and
6780 * in chunked mode. The state machines follows different flows depending on
6781 * whether content-length and chunked modes are used, since there are no
6782 * trailers in content-length :
6783 *
6784 * chk-mode cl-mode
6785 * ,----- BODY -----.
6786 * / \
6787 * V size > 0 V chk-mode
6788 * .--> SIZE -------------> DATA -------------> CRLF
6789 * | | size == 0 | last byte |
6790 * | v final crlf v inspected |
6791 * | TRAILERS -----------> DONE |
6792 * | |
6793 * `----------------------------------------------'
6794 *
6795 * Compression only happens in the DATA state, and must be flushed in final
6796 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
6797 * is performed at once on final states for all bytes parsed, or when leaving
6798 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6799 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6800int http_response_forward_body(struct stream *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6801{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6802 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6803 struct http_txn *txn = s->txn;
6804 struct http_msg *msg = &s->txn->rsp;
Willy Tarreauf2f7d6b2014-11-24 11:55:08 +0100[diff] [blame]6805 static struct buffer *tmpbuf = &buf_empty;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6806 int compressing = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6807 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6808
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6809 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6810 return 0;
6811
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6812 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]6813 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6814 !s->req.analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6815 /* Output closed while we were sending data. We must abort and
6816 * wake the other side up.
6817 */
6818 msg->msg_state = HTTP_MSG_ERROR;
6819 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6820 return 1;
6821 }
6822
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6823 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6824 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6825
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]6826 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6827 /* we have msg->sov which points to the first byte of message
6828 * body, and res->buf.p still points to the beginning of the
6829 * message. We forward the headers now, as we don't need them
6830 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6831 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6832 b_adv(res->buf, msg->sov);
6833 msg->next -= msg->sov;
6834 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6835
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6836 /* The previous analysers guarantee that the state is somewhere
6837 * between MSG_BODY and the first MSG_DATA. So msg->sol and
6838 * msg->next are always correct.
6839 */
6840 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
6841 if (msg->flags & HTTP_MSGF_TE_CHNK)
6842 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
6843 else
6844 msg->msg_state = HTTP_MSG_DATA;
6845 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6846 }
6847
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6848 if (res->to_forward) {
6849 /* We can't process the buffer's contents yet */
6850 res->flags |= CF_WAKE_WRITE;
6851 goto missing_data;
6852 }
6853
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6854 if (unlikely(s->comp_algo != NULL) && msg->msg_state < HTTP_MSG_TRAILERS) {
6855 /* We need a compression buffer in the DATA state to put the
6856 * output of compressed data, and in CRLF state to let the
6857 * TRAILERS state finish the job of removing the trailing CRLF.
6858 */
Willy Tarreauf2f7d6b2014-11-24 11:55:08 +0100[diff] [blame]6859 if (unlikely(!tmpbuf->size)) {
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6860 /* this is the first time we need the compression buffer */
Willy Tarreaue583ea52014-11-24 11:30:16 +0100[diff] [blame]6861 if (b_alloc(&tmpbuf) == NULL)
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6862 goto aborted_xfer; /* no memory */
6863 }
6864
6865 ret = http_compression_buffer_init(s, res->buf, tmpbuf);
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6866 if (ret < 0) {
6867 res->flags |= CF_WAKE_WRITE;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6868 goto missing_data; /* not enough spaces in buffers */
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6869 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6870 compressing = 1;
6871 }
6872
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6873 while (1) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6874 switch (msg->msg_state - HTTP_MSG_DATA) {
6875 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6876 /* we may have some pending data starting at res->buf->p */
6877 if (unlikely(s->comp_algo)) {
Willy Tarreau7f2f8d52014-04-18 00:20:14 +0200[diff] [blame]6878 ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6879 if (ret < 0)
6880 goto aborted_xfer;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6881
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6882 if (msg->chunk_len) {
6883 /* input empty or output full */
6884 if (res->buf->i > msg->next)
6885 res->flags |= CF_WAKE_WRITE;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6886 goto missing_data;
6887 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6888 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6889 else {
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6890 if (msg->chunk_len > res->buf->i - msg->next) {
6891 /* output full */
6892 res->flags |= CF_WAKE_WRITE;
6893 goto missing_data;
6894 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6895 msg->next += msg->chunk_len;
6896 msg->chunk_len = 0;
6897 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6898
6899 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6900 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6901 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6902 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6903 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6904 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6905 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6906 /* fall through for HTTP_MSG_CHUNK_CRLF */
6907
6908 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
6909 /* we want the CRLF after the data */
6910
6911 ret = http_skip_chunk_crlf(msg);
6912 if (ret == 0)
6913 goto missing_data;
6914 else if (ret < 0) {
6915 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6916 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]6917 goto return_bad_res;
6918 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6919 /* we're in MSG_CHUNK_SIZE now, fall through */
6920
6921 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6922 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]6923 * set ->next to point to the body and switch to DATA or
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6924 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6925 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6926
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6927 ret = http_parse_chunk_size(msg);
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6928 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6929 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6930 else if (ret < 0) {
6931 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6932 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]6933 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6934 }
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]6935 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6936 break;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6937
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6938 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6939 if (unlikely(compressing)) {
6940 /* we need to flush output contents before syncing FSMs */
6941 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6942 compressing = 0;
6943 }
6944
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6945 ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6946 if (ret == 0)
6947 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6948 else if (ret < 0) {
6949 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6950 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]6951 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6952 }
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6953 /* we're in HTTP_MSG_DONE now, fall through */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6954
6955 default:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6956 /* other states, DONE...TUNNEL */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6957 if (unlikely(compressing)) {
6958 /* we need to flush output contents before syncing FSMs */
6959 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6960 compressing = 0;
6961 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6962
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6963 /* we may have some pending data starting at res->buf->p
6964 * such as a last chunk of data or trailers.
6965 */
6966 b_adv(res->buf, msg->next);
6967 msg->next = 0;
6968
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6969 ret = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6970 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6971 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6972 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6973 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]6974
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6975 if (http_resync_states(s)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6976 /* some state changes occurred, maybe the analyser
6977 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6978 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6979 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6980 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6981 /* response errors are most likely due to
6982 * the client aborting the transfer.
6983 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6984 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6985 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6986 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6987 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, sess->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6988 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6989 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6990 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6991 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6992 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6993 }
6994 }
6995
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6996 missing_data:
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6997 /* we may have some pending data starting at res->buf->p */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6998 if (unlikely(compressing)) {
6999 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]7000 compressing = 0;
7001 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]7002
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]7003 if ((s->comp_algo == NULL || msg->msg_state >= HTTP_MSG_TRAILERS)) {
7004 b_adv(res->buf, msg->next);
7005 msg->next = 0;
7006 msg->chunk_len -= channel_forward(res, msg->chunk_len);
7007 }
7008
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]7009 if (res->flags & CF_SHUTW)
7010 goto aborted_xfer;
7011
7012 /* stop waiting for data if the input is closed before the end. If the
7013 * client side was already closed, it means that the client has aborted,
7014 * so we don't want to count this as a server abort. Otherwise it's a
7015 * server abort.
7016 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7017 if (res->flags & CF_SHUTR) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7018 if ((s->req.flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]7019 goto aborted_xfer;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7020 if (!(s->flags & SF_ERR_MASK))
7021 s->flags |= SF_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]7022 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7023 if (objt_server(s->target))
7024 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7025 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]7026 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]7027
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]7028 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7029 if (!s->req.analysers)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]7030 goto return_bad_res;
7031
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7032 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7033 * 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]7034 * Similarly, with keep-alive on the client side, we don't want to forward a
7035 * close.
7036 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]7037 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7038 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
7039 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]7040 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7041
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7042 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7043 * 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]7044 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]7045 * modes are already handled by the stream sock layer. We must not do
7046 * this in content-length mode because it could present the MSG_MORE
7047 * flag with the last block of forwarded data, which would cause an
7048 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7049 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]7050 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7051 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7052
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7053 /* the stream handler will take care of timeouts and errors */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7054 return 0;
7055
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]7056 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]7057 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7058 if (objt_server(s->target))
7059 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7060
7061 return_bad_res_stats_ok:
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]7062 if (unlikely(compressing)) {
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]7063 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]7064 compressing = 0;
7065 }
7066
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]7067 /* we may have some pending data starting at res->buf->p */
7068 if (s->comp_algo == NULL) {
7069 b_adv(res->buf, msg->next);
7070 msg->next = 0;
7071 }
7072
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7073 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]7074 /* don't send any error message as we're in the body */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]7075 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7076 res->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7077 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]7078 if (objt_server(s->target))
7079 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7080
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7081 if (!(s->flags & SF_ERR_MASK))
7082 s->flags |= SF_ERR_PRXCOND;
7083 if (!(s->flags & SF_FINST_MASK))
7084 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7085 return 0;
7086
7087 aborted_xfer:
Willy Tarreau6fef8ae2014-04-22 21:22:06 +0200[diff] [blame]7088 if (unlikely(compressing)) {
7089 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
7090 compressing = 0;
7091 }
7092
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7093 txn->rsp.msg_state = HTTP_MSG_ERROR;
7094 /* don't send any error message as we're in the body */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]7095 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7096 res->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7097 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]7098
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7099 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]7100 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7101 if (objt_server(s->target))
7102 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7103
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7104 if (!(s->flags & SF_ERR_MASK))
7105 s->flags |= SF_ERR_CLICL;
7106 if (!(s->flags & SF_FINST_MASK))
7107 s->flags |= SF_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7108 return 0;
7109}
7110
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7111/* Iterate the same filter through all request headers.
7112 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7113 * Since it can manage the switch to another backend, it updates the per-proxy
7114 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7115 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7116int 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]7117{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7118 char *cur_ptr, *cur_end, *cur_next;
7119 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7120 struct http_txn *txn = s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7121 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7122 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]7123
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7124 last_hdr = 0;
7125
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7126 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7127 old_idx = 0;
7128
7129 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7130 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7131 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7132 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7133 (exp->action == ACT_ALLOW ||
7134 exp->action == ACT_DENY ||
7135 exp->action == ACT_TARPIT))
7136 return 0;
7137
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7138 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7139 if (!cur_idx)
7140 break;
7141
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7142 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7143 cur_ptr = cur_next;
7144 cur_end = cur_ptr + cur_hdr->len;
7145 cur_next = cur_end + cur_hdr->cr + 1;
7146
7147 /* Now we have one header between cur_ptr and cur_end,
7148 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7149 */
7150
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7151 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]7152 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7153 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7154 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7155 last_hdr = 1;
7156 break;
7157
7158 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7159 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7160 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7161 break;
7162
7163 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7164 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7165 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7166 break;
7167
7168 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7169 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7170 if (trash.len < 0)
7171 return -1;
7172
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7173 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7174 /* FIXME: if the user adds a newline in the replacement, the
7175 * index will not be recalculated for now, and the new line
7176 * will not be counted as a new header.
7177 */
7178
7179 cur_end += delta;
7180 cur_next += delta;
7181 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7182 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7183 break;
7184
7185 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7186 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7187 cur_next += delta;
7188
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7189 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7190 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7191 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7192 cur_hdr->len = 0;
7193 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7194 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7195 break;
7196
7197 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7198 }
7199
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7200 /* keep the link from this header to next one in case of later
7201 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7202 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7203 old_idx = cur_idx;
7204 }
7205 return 0;
7206}
7207
7208
7209/* Apply the filter to the request line.
7210 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7211 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7212 * Since it can manage the switch to another backend, it updates the per-proxy
7213 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7214 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7215int 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]7216{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7217 char *cur_ptr, *cur_end;
7218 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7219 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7220 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7221
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7222 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7223 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7224 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7225 (exp->action == ACT_ALLOW ||
7226 exp->action == ACT_DENY ||
7227 exp->action == ACT_TARPIT))
7228 return 0;
7229 else if (exp->action == ACT_REMOVE)
7230 return 0;
7231
7232 done = 0;
7233
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7234 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7235 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7236
7237 /* Now we have the request line between cur_ptr and cur_end */
7238
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7239 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]7240 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7241 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7242 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7243 done = 1;
7244 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7245
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7246 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7247 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7248 done = 1;
7249 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7250
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7251 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7252 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7253 done = 1;
7254 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7255
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7256 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7257 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7258 if (trash.len < 0)
7259 return -1;
7260
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7261 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7262 /* FIXME: if the user adds a newline in the replacement, the
7263 * index will not be recalculated for now, and the new line
7264 * will not be counted as a new header.
7265 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7266
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7267 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7268 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7269 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7270 HTTP_MSG_RQMETH,
7271 cur_ptr, cur_end + 1,
7272 NULL, NULL);
7273 if (unlikely(!cur_end))
7274 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7275
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7276 /* we have a full request and we know that we have either a CR
7277 * or an LF at <ptr>.
7278 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7279 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
7280 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]7281 /* there is no point trying this regex on headers */
7282 return 1;
7283 }
7284 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7285 return done;
7286}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]7287
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7288
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7289
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7290/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7291 * 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]7292 * 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]7293 * unparsable request. Since it can manage the switch to another backend, it
7294 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7295 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7296int apply_filters_to_request(struct stream *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7297{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7298 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7299 struct http_txn *txn = s->txn;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7300 struct hdr_exp *exp;
7301
7302 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7303 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7304
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7305 /*
7306 * The interleaving of transformations and verdicts
7307 * makes it difficult to decide to continue or stop
7308 * the evaluation.
7309 */
7310
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7311 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
7312 break;
7313
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7314 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7315 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7316 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7317 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7318
7319 /* if this filter had a condition, evaluate it now and skip to
7320 * next filter if the condition does not match.
7321 */
7322 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7323 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]7324 ret = acl_pass(ret);
7325 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7326 ret = !ret;
7327
7328 if (!ret)
7329 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7330 }
7331
7332 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7333 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7334 if (unlikely(ret < 0))
7335 return -1;
7336
7337 if (likely(ret == 0)) {
7338 /* The filter did not match the request, it can be
7339 * iterated through all headers.
7340 */
Willy Tarreau34d4c3c2015-01-30 20:58:58 +0100[diff] [blame]7341 if (unlikely(apply_filter_to_req_headers(s, req, exp) < 0))
7342 return -1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7343 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7344 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7345 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7346}
7347
7348
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7349
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7350/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7351 * Try to retrieve the server associated to the appsession.
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7352 * If the server is found, it's assigned to the stream.
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7353 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7354void manage_client_side_appsession(struct stream *s, const char *buf, int len) {
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7355 struct http_txn *txn = s->txn;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7356 appsess *asession = NULL;
7357 char *sessid_temp = NULL;
7358
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7359 if (len > s->be->appsession_len) {
7360 len = s->be->appsession_len;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7361 }
7362
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7363 if (s->be->options2 & PR_O2_AS_REQL) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7364 /* request-learn option is enabled : store the sessid in the stream for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7365 if (txn->sessid != NULL) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7366 /* 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]7367 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7368 }
7369
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7370 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7371 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7372 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]7373 return;
7374 }
7375
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7376 memcpy(txn->sessid, buf, len);
7377 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7378 }
7379
7380 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
7381 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7382 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]7383 return;
7384 }
7385
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7386 memcpy(sessid_temp, buf, len);
7387 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7388
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7389 asession = appsession_hash_lookup(&(s->be->htbl_proxy), sessid_temp);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7390 /* free previously allocated memory */
7391 pool_free2(apools.sessid, sessid_temp);
7392
7393 if (asession != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7394 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
7395 if (!(s->be->options2 & PR_O2_AS_REQL))
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7396 asession->request_count++;
7397
7398 if (asession->serverid != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7399 struct server *srv = s->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7400
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7401 while (srv) {
7402 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7403 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7404 (s->be->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7405 (s->flags & SF_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7406 /* we found the server and it's usable */
7407 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7408 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7409 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7410 s->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]7411
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7412 break;
7413 } else {
7414 txn->flags &= ~TX_CK_MASK;
7415 txn->flags |= TX_CK_DOWN;
7416 }
7417 }
7418 srv = srv->next;
7419 }
7420 }
7421 }
7422}
7423
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7424/* Find the end of a cookie value contained between <s> and <e>. It works the
7425 * same way as with headers above except that the semi-colon also ends a token.
7426 * See RFC2965 for more information. Note that it requires a valid header to
7427 * return a valid result.
7428 */
7429char *find_cookie_value_end(char *s, const char *e)
7430{
7431 int quoted, qdpair;
7432
7433 quoted = qdpair = 0;
7434 for (; s < e; s++) {
7435 if (qdpair) qdpair = 0;
7436 else if (quoted) {
7437 if (*s == '\\') qdpair = 1;
7438 else if (*s == '"') quoted = 0;
7439 }
7440 else if (*s == '"') quoted = 1;
7441 else if (*s == ',' || *s == ';') return s;
7442 }
7443 return s;
7444}
7445
7446/* Delete a value in a header between delimiters <from> and <next> in buffer
7447 * <buf>. The number of characters displaced is returned, and the pointer to
7448 * the first delimiter is updated if required. The function tries as much as
7449 * possible to respect the following principles :
7450 * - replace <from> delimiter by the <next> one unless <from> points to a
7451 * colon, in which case <next> is simply removed
7452 * - set exactly one space character after the new first delimiter, unless
7453 * there are not enough characters in the block being moved to do so.
7454 * - remove unneeded spaces before the previous delimiter and after the new
7455 * one.
7456 *
7457 * It is the caller's responsibility to ensure that :
7458 * - <from> points to a valid delimiter or the colon ;
7459 * - <next> points to a valid delimiter or the final CR/LF ;
7460 * - there are non-space chars before <from> ;
7461 * - there is a CR/LF at or after <next>.
7462 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]7463int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7464{
7465 char *prev = *from;
7466
7467 if (*prev == ':') {
7468 /* We're removing the first value, preserve the colon and add a
7469 * space if possible.
7470 */
7471 if (!http_is_crlf[(unsigned char)*next])
7472 next++;
7473 prev++;
7474 if (prev < next)
7475 *prev++ = ' ';
7476
7477 while (http_is_spht[(unsigned char)*next])
7478 next++;
7479 } else {
7480 /* Remove useless spaces before the old delimiter. */
7481 while (http_is_spht[(unsigned char)*(prev-1)])
7482 prev--;
7483 *from = prev;
7484
7485 /* copy the delimiter and if possible a space if we're
7486 * not at the end of the line.
7487 */
7488 if (!http_is_crlf[(unsigned char)*next]) {
7489 *prev++ = *next++;
7490 if (prev + 1 < next)
7491 *prev++ = ' ';
7492 while (http_is_spht[(unsigned char)*next])
7493 next++;
7494 }
7495 }
7496 return buffer_replace2(buf, prev, next, NULL, 0);
7497}
7498
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7499/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7500 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7501 * desirable to call it only when needed. This code is quite complex because
7502 * of the multiple very crappy and ambiguous syntaxes we have to support. it
7503 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7504 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7505void manage_client_side_cookies(struct stream *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7506{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7507 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7508 struct session *sess = s->sess;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7509 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7510 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7511 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
7512 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7513
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7514 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]7515 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7516 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7517
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7518 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7519 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7520 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7521
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7522 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7523 hdr_beg = hdr_next;
7524 hdr_end = hdr_beg + cur_hdr->len;
7525 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7526
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7527 /* We have one full header between hdr_beg and hdr_end, and the
7528 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7529 * "Cookie:" headers.
7530 */
7531
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7532 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7533 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7534 old_idx = cur_idx;
7535 continue;
7536 }
7537
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7538 del_from = NULL; /* nothing to be deleted */
7539 preserve_hdr = 0; /* assume we may kill the whole header */
7540
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7541 /* Now look for cookies. Conforming to RFC2109, we have to support
7542 * attributes whose name begin with a '$', and associate them with
7543 * the right cookie, if we want to delete this cookie.
7544 * So there are 3 cases for each cookie read :
7545 * 1) it's a special attribute, beginning with a '$' : ignore it.
7546 * 2) it's a server id cookie that we *MAY* want to delete : save
7547 * some pointers on it (last semi-colon, beginning of cookie...)
7548 * 3) it's an application cookie : we *MAY* have to delete a previous
7549 * "special" cookie.
7550 * At the end of loop, if a "special" cookie remains, we may have to
7551 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7552 * *MUST* delete it.
7553 *
7554 * Note: RFC2965 is unclear about the processing of spaces around
7555 * the equal sign in the ATTR=VALUE form. A careful inspection of
7556 * the RFC explicitly allows spaces before it, and not within the
7557 * tokens (attrs or values). An inspection of RFC2109 allows that
7558 * too but section 10.1.3 lets one think that spaces may be allowed
7559 * after the equal sign too, resulting in some (rare) buggy
7560 * implementations trying to do that. So let's do what servers do.
7561 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
7562 * allowed quoted strings in values, with any possible character
7563 * after a backslash, including control chars and delimitors, which
7564 * causes parsing to become ambiguous. Browsers also allow spaces
7565 * within values even without quotes.
7566 *
7567 * We have to keep multiple pointers in order to support cookie
7568 * removal at the beginning, middle or end of header without
7569 * corrupting the header. All of these headers are valid :
7570 *
7571 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
7572 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
7573 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
7574 * | | | | | | | | |
7575 * | | | | | | | | hdr_end <--+
7576 * | | | | | | | +--> next
7577 * | | | | | | +----> val_end
7578 * | | | | | +-----------> val_beg
7579 * | | | | +--------------> equal
7580 * | | | +----------------> att_end
7581 * | | +---------------------> att_beg
7582 * | +--------------------------> prev
7583 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7584 */
7585
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7586 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
7587 /* Iterate through all cookies on this line */
7588
7589 /* find att_beg */
7590 att_beg = prev + 1;
7591 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7592 att_beg++;
7593
7594 /* find att_end : this is the first character after the last non
7595 * space before the equal. It may be equal to hdr_end.
7596 */
7597 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7598
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7599 while (equal < hdr_end) {
7600 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7601 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7602 if (http_is_spht[(unsigned char)*equal++])
7603 continue;
7604 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7605 }
7606
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7607 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7608 * is between <att_beg> and <equal>, both may be identical.
7609 */
7610
7611 /* look for end of cookie if there is an equal sign */
7612 if (equal < hdr_end && *equal == '=') {
7613 /* look for the beginning of the value */
7614 val_beg = equal + 1;
7615 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7616 val_beg++;
7617
7618 /* find the end of the value, respecting quotes */
7619 next = find_cookie_value_end(val_beg, hdr_end);
7620
7621 /* make val_end point to the first white space or delimitor after the value */
7622 val_end = next;
7623 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7624 val_end--;
7625 } else {
7626 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7627 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7628
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7629 /* We have nothing to do with attributes beginning with '$'. However,
7630 * they will automatically be removed if a header before them is removed,
7631 * since they're supposed to be linked together.
7632 */
7633 if (*att_beg == '$')
7634 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7635
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7636 /* Ignore cookies with no equal sign */
7637 if (equal == next) {
7638 /* This is not our cookie, so we must preserve it. But if we already
7639 * scheduled another cookie for removal, we cannot remove the
7640 * complete header, but we can remove the previous block itself.
7641 */
7642 preserve_hdr = 1;
7643 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7644 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7645 val_end += delta;
7646 next += delta;
7647 hdr_end += delta;
7648 hdr_next += delta;
7649 cur_hdr->len += delta;
7650 http_msg_move_end(&txn->req, delta);
7651 prev = del_from;
7652 del_from = NULL;
7653 }
7654 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7655 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7656
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7657 /* if there are spaces around the equal sign, we need to
7658 * strip them otherwise we'll get trouble for cookie captures,
7659 * or even for rewrites. Since this happens extremely rarely,
7660 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7661 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7662 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7663 int stripped_before = 0;
7664 int stripped_after = 0;
7665
7666 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7667 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7668 equal += stripped_before;
7669 val_beg += stripped_before;
7670 }
7671
7672 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7673 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7674 val_beg += stripped_after;
7675 stripped_before += stripped_after;
7676 }
7677
7678 val_end += stripped_before;
7679 next += stripped_before;
7680 hdr_end += stripped_before;
7681 hdr_next += stripped_before;
7682 cur_hdr->len += stripped_before;
7683 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7684 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7685 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7686
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7687 /* First, let's see if we want to capture this cookie. We check
7688 * that we don't already have a client side cookie, because we
7689 * can only capture one. Also as an optimisation, we ignore
7690 * cookies shorter than the declared name.
7691 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7692 if (sess->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7693 (val_end - att_beg >= sess->fe->capture_namelen) &&
7694 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7695 int log_len = val_end - att_beg;
7696
7697 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7698 Alert("HTTP logging : out of memory.\n");
7699 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7700 if (log_len > sess->fe->capture_len)
7701 log_len = sess->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7702 memcpy(txn->cli_cookie, att_beg, log_len);
7703 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7704 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7705 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7706
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7707 /* Persistence cookies in passive, rewrite or insert mode have the
7708 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7709 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7710 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7711 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7712 * For cookies in prefix mode, the form is :
7713 *
7714 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7715 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7716 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
7717 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
7718 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7719 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7720
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7721 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7722 * have the server ID between val_beg and delim, and the original cookie between
7723 * delim+1 and val_end. Otherwise, delim==val_end :
7724 *
7725 * Cookie: NAME=SRV; # in all but prefix modes
7726 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7727 * | || || | |+-> next
7728 * | || || | +--> val_end
7729 * | || || +---------> delim
7730 * | || |+------------> val_beg
7731 * | || +-------------> att_end = equal
7732 * | |+-----------------> att_beg
7733 * | +------------------> prev
7734 * +-------------------------> hdr_beg
7735 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7736
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7737 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7738 for (delim = val_beg; delim < val_end; delim++)
7739 if (*delim == COOKIE_DELIM)
7740 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7741 } else {
7742 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7743 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7744 /* Now check if the cookie contains a date field, which would
7745 * appear after a vertical bar ('|') just after the server name
7746 * and before the delimiter.
7747 */
7748 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7749 if (vbar1) {
7750 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7751 * right is the last seen date. It is a base64 encoded
7752 * 30-bit value representing the UNIX date since the
7753 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7754 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7755 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7756 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7757 if (val_end - vbar1 >= 5) {
7758 val = b64tos30(vbar1);
7759 if (val > 0)
7760 txn->cookie_last_date = val << 2;
7761 }
7762 /* look for a second vertical bar */
7763 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7764 if (vbar1 && (val_end - vbar1 > 5)) {
7765 val = b64tos30(vbar1 + 1);
7766 if (val > 0)
7767 txn->cookie_first_date = val << 2;
7768 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7769 }
7770 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7771
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7772 /* if the cookie has an expiration date and the proxy wants to check
7773 * it, then we do that now. We first check if the cookie is too old,
7774 * then only if it has expired. We detect strict overflow because the
7775 * time resolution here is not great (4 seconds). Cookies with dates
7776 * in the future are ignored if their offset is beyond one day. This
7777 * allows an admin to fix timezone issues without expiring everyone
7778 * and at the same time avoids keeping unwanted side effects for too
7779 * long.
7780 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7781 if (txn->cookie_first_date && s->be->cookie_maxlife &&
7782 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7783 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7784 txn->flags &= ~TX_CK_MASK;
7785 txn->flags |= TX_CK_OLD;
7786 delim = val_beg; // let's pretend we have not found the cookie
7787 txn->cookie_first_date = 0;
7788 txn->cookie_last_date = 0;
7789 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7790 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
7791 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7792 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7793 txn->flags &= ~TX_CK_MASK;
7794 txn->flags |= TX_CK_EXPIRED;
7795 delim = val_beg; // let's pretend we have not found the cookie
7796 txn->cookie_first_date = 0;
7797 txn->cookie_last_date = 0;
7798 }
7799
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7800 /* Here, we'll look for the first running server which supports the cookie.
7801 * This allows to share a same cookie between several servers, for example
7802 * to dedicate backup servers to specific servers only.
7803 * However, to prevent clients from sticking to cookie-less backup server
7804 * when they have incidentely learned an empty cookie, we simply ignore
7805 * empty cookies and mark them as invalid.
7806 * The same behaviour is applied when persistence must be ignored.
7807 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7808 if ((delim == val_beg) || (s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7809 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7810
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7811 while (srv) {
7812 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7813 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7814 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7815 (s->be->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7816 (s->flags & SF_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7817 /* we found the server and we can use it */
7818 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7819 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7820 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7821 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7822 break;
7823 } else {
7824 /* we found a server, but it's down,
7825 * mark it as such and go on in case
7826 * another one is available.
7827 */
7828 txn->flags &= ~TX_CK_MASK;
7829 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7830 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7831 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7832 srv = srv->next;
7833 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7834
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7835 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7836 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7837 txn->flags &= ~TX_CK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7838 if ((s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7839 txn->flags |= TX_CK_UNUSED;
7840 else
7841 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7842 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7843
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7844 /* depending on the cookie mode, we may have to either :
7845 * - delete the complete cookie if we're in insert+indirect mode, so that
7846 * the server never sees it ;
7847 * - remove the server id from the cookie value, and tag the cookie as an
7848 * application cookie so that it does not get accidentely removed later,
7849 * if we're in cookie prefix mode
7850 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7851 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7852 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7853
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7854 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7855 val_end += delta;
7856 next += delta;
7857 hdr_end += delta;
7858 hdr_next += delta;
7859 cur_hdr->len += delta;
7860 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7861
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7862 del_from = NULL;
7863 preserve_hdr = 1; /* we want to keep this cookie */
7864 }
7865 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7866 (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]7867 del_from = prev;
7868 }
7869 } else {
7870 /* This is not our cookie, so we must preserve it. But if we already
7871 * scheduled another cookie for removal, we cannot remove the
7872 * complete header, but we can remove the previous block itself.
7873 */
7874 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7875
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7876 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7877 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7878 if (att_beg >= del_from)
7879 att_beg += delta;
7880 if (att_end >= del_from)
7881 att_end += delta;
7882 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7883 val_end += delta;
7884 next += delta;
7885 hdr_end += delta;
7886 hdr_next += delta;
7887 cur_hdr->len += delta;
7888 http_msg_move_end(&txn->req, delta);
7889 prev = del_from;
7890 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7891 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7892 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7893
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7894 /* Look for the appsession cookie unless persistence must be ignored */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7895 if (!(s->flags & SF_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7896 int cmp_len, value_len;
7897 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7898
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7899 if (s->be->options2 & PR_O2_AS_PFX) {
7900 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
7901 value_begin = att_beg + s->be->appsession_name_len;
7902 value_len = val_end - att_beg - s->be->appsession_name_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7903 } else {
7904 cmp_len = att_end - att_beg;
7905 value_begin = val_beg;
7906 value_len = val_end - val_beg;
7907 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7908
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7909 /* let's see if the cookie is our appcookie */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7910 if (cmp_len == s->be->appsession_name_len &&
7911 memcmp(att_beg, s->be->appsession_name, cmp_len) == 0) {
7912 manage_client_side_appsession(s, value_begin, value_len);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7913 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7914 }
7915
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7916 /* continue with next cookie on this header line */
7917 att_beg = next;
7918 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7919
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7920 /* There are no more cookies on this line.
7921 * We may still have one (or several) marked for deletion at the
7922 * end of the line. We must do this now in two ways :
7923 * - if some cookies must be preserved, we only delete from the
7924 * mark to the end of line ;
7925 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7926 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7927 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7928 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7929 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7930 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7931 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7932 cur_hdr->len += delta;
7933 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7934 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7935
7936 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7937 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7938 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7939 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7940 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7941 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7942 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7943 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7944 }
7945
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7946 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7947 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7948 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7949}
7950
7951
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7952/* Iterate the same filter through all response headers contained in <rtr>.
7953 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7954 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7955int 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]7956{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7957 char *cur_ptr, *cur_end, *cur_next;
7958 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7959 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7960 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7961 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7962
7963 last_hdr = 0;
7964
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7965 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7966 old_idx = 0;
7967
7968 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7969 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7970 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7971 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7972 (exp->action == ACT_ALLOW ||
7973 exp->action == ACT_DENY))
7974 return 0;
7975
7976 cur_idx = txn->hdr_idx.v[old_idx].next;
7977 if (!cur_idx)
7978 break;
7979
7980 cur_hdr = &txn->hdr_idx.v[cur_idx];
7981 cur_ptr = cur_next;
7982 cur_end = cur_ptr + cur_hdr->len;
7983 cur_next = cur_end + cur_hdr->cr + 1;
7984
7985 /* Now we have one header between cur_ptr and cur_end,
7986 * and the next header starts at cur_next.
7987 */
7988
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7989 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]7990 switch (exp->action) {
7991 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7992 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7993 last_hdr = 1;
7994 break;
7995
7996 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7997 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7998 last_hdr = 1;
7999 break;
8000
8001 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8002 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
8003 if (trash.len < 0)
8004 return -1;
8005
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8006 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8007 /* FIXME: if the user adds a newline in the replacement, the
8008 * index will not be recalculated for now, and the new line
8009 * will not be counted as a new header.
8010 */
8011
8012 cur_end += delta;
8013 cur_next += delta;
8014 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8015 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8016 break;
8017
8018 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8019 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8020 cur_next += delta;
8021
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8022 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8023 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8024 txn->hdr_idx.used--;
8025 cur_hdr->len = 0;
8026 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8027 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8028 break;
8029
8030 }
8031 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8032
8033 /* keep the link from this header to next one in case of later
8034 * removal of next header.
8035 */
8036 old_idx = cur_idx;
8037 }
8038 return 0;
8039}
8040
8041
8042/* Apply the filter to the status line in the response buffer <rtr>.
8043 * Returns 0 if nothing has been done, 1 if the filter has been applied,
8044 * or -1 if a replacement resulted in an invalid status line.
8045 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8046int 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]8047{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8048 char *cur_ptr, *cur_end;
8049 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8050 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8051 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8052
8053
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8054 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8055 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8056 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8057 (exp->action == ACT_ALLOW ||
8058 exp->action == ACT_DENY))
8059 return 0;
8060 else if (exp->action == ACT_REMOVE)
8061 return 0;
8062
8063 done = 0;
8064
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8065 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]8066 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8067
8068 /* Now we have the status line between cur_ptr and cur_end */
8069
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]8070 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]8071 switch (exp->action) {
8072 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8073 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8074 done = 1;
8075 break;
8076
8077 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8078 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8079 done = 1;
8080 break;
8081
8082 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8083 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
8084 if (trash.len < 0)
8085 return -1;
8086
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8087 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8088 /* FIXME: if the user adds a newline in the replacement, the
8089 * index will not be recalculated for now, and the new line
8090 * will not be counted as a new header.
8091 */
8092
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8093 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8094 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8095 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]8096 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8097 cur_ptr, cur_end + 1,
8098 NULL, NULL);
8099 if (unlikely(!cur_end))
8100 return -1;
8101
8102 /* we have a full respnse and we know that we have either a CR
8103 * or an LF at <ptr>.
8104 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8105 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]8106 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]8107 /* there is no point trying this regex on headers */
8108 return 1;
8109 }
8110 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8111 return done;
8112}
8113
8114
8115
8116/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8117 * 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]8118 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
8119 * unparsable response.
8120 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8121int apply_filters_to_response(struct stream *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8122{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]8123 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8124 struct http_txn *txn = s->txn;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8125 struct hdr_exp *exp;
8126
8127 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8128 int ret;
8129
8130 /*
8131 * The interleaving of transformations and verdicts
8132 * makes it difficult to decide to continue or stop
8133 * the evaluation.
8134 */
8135
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8136 if (txn->flags & TX_SVDENY)
8137 break;
8138
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8139 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8140 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
8141 exp->action == ACT_PASS)) {
8142 exp = exp->next;
8143 continue;
8144 }
8145
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8146 /* if this filter had a condition, evaluate it now and skip to
8147 * next filter if the condition does not match.
8148 */
8149 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]8150 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]8151 ret = acl_pass(ret);
8152 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
8153 ret = !ret;
8154 if (!ret)
8155 continue;
8156 }
8157
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8158 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8159 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8160 if (unlikely(ret < 0))
8161 return -1;
8162
8163 if (likely(ret == 0)) {
8164 /* The filter did not match the response, it can be
8165 * iterated through all headers.
8166 */
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8167 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
8168 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8169 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8170 }
8171 return 0;
8172}
8173
8174
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8175/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]8176 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8177 * desirable to call it only when needed. This function is also used when we
8178 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8179 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8180void manage_server_side_cookies(struct stream *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8181{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8182 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8183 struct session *sess = s->sess;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8184 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8185 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8186 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8187 char *hdr_beg, *hdr_end, *hdr_next;
8188 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8189
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8190 /* Iterate through the headers.
8191 * we start with the start line.
8192 */
8193 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8194 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8195
8196 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
8197 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8198 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8199
8200 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8201 hdr_beg = hdr_next;
8202 hdr_end = hdr_beg + cur_hdr->len;
8203 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8204
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8205 /* We have one full header between hdr_beg and hdr_end, and the
8206 * next header starts at hdr_next. We're only interested in
8207 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8208 */
8209
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8210 is_cookie2 = 0;
8211 prev = hdr_beg + 10;
8212 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8213 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8214 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
8215 if (!val) {
8216 old_idx = cur_idx;
8217 continue;
8218 }
8219 is_cookie2 = 1;
8220 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8221 }
8222
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8223 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
8224 * <prev> points to the colon.
8225 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8226 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8227
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8228 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
8229 * check-cache is enabled) and we are not interested in checking
8230 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]8231 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8232 if (s->be->cookie_name == NULL &&
8233 s->be->appsession_name == NULL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8234 sess->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8235 return;
8236
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8237 /* OK so now we know we have to process this response cookie.
8238 * The format of the Set-Cookie header is slightly different
8239 * from the format of the Cookie header in that it does not
8240 * support the comma as a cookie delimiter (thus the header
8241 * cannot be folded) because the Expires attribute described in
8242 * the original Netscape's spec may contain an unquoted date
8243 * with a comma inside. We have to live with this because
8244 * many browsers don't support Max-Age and some browsers don't
8245 * support quoted strings. However the Set-Cookie2 header is
8246 * clean.
8247 *
8248 * We have to keep multiple pointers in order to support cookie
8249 * removal at the beginning, middle or end of header without
8250 * corrupting the header (in case of set-cookie2). A special
8251 * pointer, <scav> points to the beginning of the set-cookie-av
8252 * fields after the first semi-colon. The <next> pointer points
8253 * either to the end of line (set-cookie) or next unquoted comma
8254 * (set-cookie2). All of these headers are valid :
8255 *
8256 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
8257 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8258 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8259 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
8260 * | | | | | | | | | |
8261 * | | | | | | | | +-> next hdr_end <--+
8262 * | | | | | | | +------------> scav
8263 * | | | | | | +--------------> val_end
8264 * | | | | | +--------------------> val_beg
8265 * | | | | +----------------------> equal
8266 * | | | +------------------------> att_end
8267 * | | +----------------------------> att_beg
8268 * | +------------------------------> prev
8269 * +-----------------------------------------> hdr_beg
8270 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8271
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8272 for (; prev < hdr_end; prev = next) {
8273 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8274
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8275 /* find att_beg */
8276 att_beg = prev + 1;
8277 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8278 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8279
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8280 /* find att_end : this is the first character after the last non
8281 * space before the equal. It may be equal to hdr_end.
8282 */
8283 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8284
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8285 while (equal < hdr_end) {
8286 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
8287 break;
8288 if (http_is_spht[(unsigned char)*equal++])
8289 continue;
8290 att_end = equal;
8291 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8292
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8293 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8294 * is between <att_beg> and <equal>, both may be identical.
8295 */
8296
8297 /* look for end of cookie if there is an equal sign */
8298 if (equal < hdr_end && *equal == '=') {
8299 /* look for the beginning of the value */
8300 val_beg = equal + 1;
8301 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8302 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8303
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8304 /* find the end of the value, respecting quotes */
8305 next = find_cookie_value_end(val_beg, hdr_end);
8306
8307 /* make val_end point to the first white space or delimitor after the value */
8308 val_end = next;
8309 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8310 val_end--;
8311 } else {
8312 /* <equal> points to next comma, semi-colon or EOL */
8313 val_beg = val_end = next = equal;
8314 }
8315
8316 if (next < hdr_end) {
8317 /* Set-Cookie2 supports multiple cookies, and <next> points to
8318 * a colon or semi-colon before the end. So skip all attr-value
8319 * pairs and look for the next comma. For Set-Cookie, since
8320 * commas are permitted in values, skip to the end.
8321 */
8322 if (is_cookie2)
8323 next = find_hdr_value_end(next, hdr_end);
8324 else
8325 next = hdr_end;
8326 }
8327
8328 /* Now everything is as on the diagram above */
8329
8330 /* Ignore cookies with no equal sign */
8331 if (equal == val_end)
8332 continue;
8333
8334 /* If there are spaces around the equal sign, we need to
8335 * strip them otherwise we'll get trouble for cookie captures,
8336 * or even for rewrites. Since this happens extremely rarely,
8337 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8338 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8339 if (unlikely(att_end != equal || val_beg > equal + 1)) {
8340 int stripped_before = 0;
8341 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8342
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8343 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8344 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8345 equal += stripped_before;
8346 val_beg += stripped_before;
8347 }
8348
8349 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8350 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8351 val_beg += stripped_after;
8352 stripped_before += stripped_after;
8353 }
8354
8355 val_end += stripped_before;
8356 next += stripped_before;
8357 hdr_end += stripped_before;
8358 hdr_next += stripped_before;
8359 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]8360 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8361 }
8362
8363 /* First, let's see if we want to capture this cookie. We check
8364 * that we don't already have a server side cookie, because we
8365 * can only capture one. Also as an optimisation, we ignore
8366 * cookies shorter than the declared name.
8367 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8368 if (sess->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]8369 txn->srv_cookie == NULL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8370 (val_end - att_beg >= sess->fe->capture_namelen) &&
8371 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8372 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]8373 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8374 Alert("HTTP logging : out of memory.\n");
8375 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8376 else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8377 if (log_len > sess->fe->capture_len)
8378 log_len = sess->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8379 memcpy(txn->srv_cookie, att_beg, log_len);
8380 txn->srv_cookie[log_len] = 0;
8381 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8382 }
8383
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8384 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8385 /* now check if we need to process it for persistence */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8386 if (!(s->flags & SF_IGNORE_PRST) &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8387 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
8388 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8389 /* assume passive cookie by default */
8390 txn->flags &= ~TX_SCK_MASK;
8391 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8392
8393 /* If the cookie is in insert mode on a known server, we'll delete
8394 * this occurrence because we'll insert another one later.
8395 * 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]8396 * a direct access.
8397 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8398 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]8399 /* The "preserve" flag was set, we don't want to touch the
8400 * server's cookie.
8401 */
8402 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8403 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8404 ((s->flags & SF_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8405 /* this cookie must be deleted */
8406 if (*prev == ':' && next == hdr_end) {
8407 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8408 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8409 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8410 txn->hdr_idx.used--;
8411 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8412 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8413 hdr_next += delta;
8414 http_msg_move_end(&txn->rsp, delta);
8415 /* note: while both invalid now, <next> and <hdr_end>
8416 * are still equal, so the for() will stop as expected.
8417 */
8418 } else {
8419 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8420 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8421 next = prev;
8422 hdr_end += delta;
8423 hdr_next += delta;
8424 cur_hdr->len += delta;
8425 http_msg_move_end(&txn->rsp, delta);
8426 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8427 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8428 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8429 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8430 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8431 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8432 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8433 * with this server since we know it.
8434 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8435 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8436 next += delta;
8437 hdr_end += delta;
8438 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8439 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8440 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8441
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8442 txn->flags &= ~TX_SCK_MASK;
8443 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8444 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8445 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8446 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8447 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8448 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8449 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8450 next += delta;
8451 hdr_end += delta;
8452 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8453 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8454 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8455
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8456 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8457 txn->flags &= ~TX_SCK_MASK;
8458 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8459 }
8460 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]8461 /* 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]8462 else if (!(s->flags & SF_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8463 int cmp_len, value_len;
8464 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8465
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8466 if (s->be->options2 & PR_O2_AS_PFX) {
8467 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
8468 value_begin = att_beg + s->be->appsession_name_len;
8469 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]8470 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8471 cmp_len = att_end - att_beg;
8472 value_begin = val_beg;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8473 value_len = MIN(s->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8474 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8475
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8476 if ((cmp_len == s->be->appsession_name_len) &&
8477 (memcmp(att_beg, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8478 /* free a possibly previously allocated memory */
8479 pool_free2(apools.sessid, txn->sessid);
8480
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8481 /* Store the sessid in the stream for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8482 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8483 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8484 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]8485 return;
8486 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8487 memcpy(txn->sessid, value_begin, value_len);
8488 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8489 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8490 }
8491 /* that's done for this cookie, check the next one on the same
8492 * line when next != hdr_end (only if is_cookie2).
8493 */
8494 }
8495 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8496 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8497 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8498
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8499 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8500 appsess *asession = NULL;
8501 /* only do insert, if lookup fails */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8502 asession = appsession_hash_lookup(&(s->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8503 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]8504 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8505 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
8506 Alert("Not enough Memory process_srv():asession:calloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8507 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8508 return;
8509 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8510 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
8511
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8512 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
8513 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8514 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8515 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8516 return;
8517 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8518 memcpy(asession->sessid, txn->sessid, s->be->appsession_len);
8519 asession->sessid[s->be->appsession_len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8520
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8521 server_id_len = strlen(objt_server(s->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8522 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8523 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8524 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8525 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8526 return;
8527 }
8528 asession->serverid[0] = '\0';
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8529 memcpy(asession->serverid, objt_server(s->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8530
8531 asession->request_count = 0;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8532 appsession_hash_insert(&(s->be->htbl_proxy), asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8533 }
8534
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8535 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8536 asession->request_count++;
8537 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8538}
8539
8540
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8541/*
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8542 * Check if response is cacheable or not. Updates s->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8543 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8544void check_response_for_cacheability(struct stream *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8545{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8546 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8547 char *p1, *p2;
8548
8549 char *cur_ptr, *cur_end, *cur_next;
8550 int cur_idx;
8551
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]8552 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8553 return;
8554
8555 /* Iterate through the headers.
8556 * we start with the start line.
8557 */
8558 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8559 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8560
8561 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
8562 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8563 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8564
8565 cur_hdr = &txn->hdr_idx.v[cur_idx];
8566 cur_ptr = cur_next;
8567 cur_end = cur_ptr + cur_hdr->len;
8568 cur_next = cur_end + cur_hdr->cr + 1;
8569
8570 /* We have one full header between cur_ptr and cur_end, and the
8571 * next header starts at cur_next. We're only interested in
8572 * "Cookie:" headers.
8573 */
8574
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8575 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
8576 if (val) {
8577 if ((cur_end - (cur_ptr + val) >= 8) &&
8578 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
8579 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
8580 return;
8581 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8582 }
8583
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8584 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
8585 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8586 continue;
8587
8588 /* OK, right now we know we have a cache-control header at cur_ptr */
8589
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8590 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8591
8592 if (p1 >= cur_end) /* no more info */
8593 continue;
8594
8595 /* p1 is at the beginning of the value */
8596 p2 = p1;
8597
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]8598 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8599 p2++;
8600
8601 /* we have a complete value between p1 and p2 */
8602 if (p2 < cur_end && *p2 == '=') {
8603 /* we have something of the form no-cache="set-cookie" */
8604 if ((cur_end - p1 >= 21) &&
8605 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
8606 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8607 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8608 continue;
8609 }
8610
8611 /* OK, so we know that either p2 points to the end of string or to a comma */
8612 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8613 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8614 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8615 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8616 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8617 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8618 return;
8619 }
8620
8621 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8622 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8623 continue;
8624 }
8625 }
8626}
8627
8628
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8629/*
8630 * Try to retrieve a known appsession in the URI, then the associated server.
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8631 * If the server is found, it's assigned to the stream.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8632 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8633void get_srv_from_appsession(struct stream *s, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8634{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8635 char *end_params, *first_param, *cur_param, *next_param;
8636 char separator;
8637 int value_len;
8638
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8639 int mode = s->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8640
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8641 if (s->be->appsession_name == NULL ||
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8642 (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]8643 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8644 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8645
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8646 first_param = NULL;
8647 switch (mode) {
8648 case PR_O2_AS_M_PP:
8649 first_param = memchr(begin, ';', len);
8650 break;
8651 case PR_O2_AS_M_QS:
8652 first_param = memchr(begin, '?', len);
8653 break;
8654 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8655
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8656 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8657 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8658 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8659
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8660 switch (mode) {
8661 case PR_O2_AS_M_PP:
8662 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
8663 end_params = (char *) begin + len;
8664 }
8665 separator = ';';
8666 break;
8667 case PR_O2_AS_M_QS:
8668 end_params = (char *) begin + len;
8669 separator = '&';
8670 break;
8671 default:
8672 /* unknown mode, shouldn't happen */
8673 return;
8674 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8675
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8676 cur_param = next_param = end_params;
8677 while (cur_param > first_param) {
8678 cur_param--;
8679 if ((cur_param[0] == separator) || (cur_param == first_param)) {
8680 /* let's see if this is the appsession parameter */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8681 if ((cur_param + s->be->appsession_name_len + 1 < next_param) &&
8682 ((s->be->options2 & PR_O2_AS_PFX) || cur_param[s->be->appsession_name_len + 1] == '=') &&
8683 (strncasecmp(cur_param + 1, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8684 /* Cool... it's the right one */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8685 cur_param += s->be->appsession_name_len + (s->be->options2 & PR_O2_AS_PFX ? 1 : 2);
8686 value_len = MIN(s->be->appsession_len, next_param - cur_param);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8687 if (value_len > 0) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8688 manage_client_side_appsession(s, cur_param, value_len);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8689 }
8690 break;
8691 }
8692 next_param = cur_param;
8693 }
8694 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8695#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]8696 Alert("get_srv_from_appsession\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8697 appsession_hash_dump(&(s->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8698#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8699}
8700
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8701/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8702 * 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]8703 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8704 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8705 * 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]8706 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8707 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8708 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8709 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8710int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8711{
8712 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8713 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8714 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8715
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8716 if (!uri_auth)
8717 return 0;
8718
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8719 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]8720 return 0;
8721
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8722 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8723 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8724 return 0;
8725
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8726 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8727 return 0;
8728
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8729 return 1;
8730}
8731
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8732/*
8733 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8734 * By default it tries to report the error position as msg->err_pos. However if
8735 * this one is not set, it will then report msg->next, which is the last known
8736 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8737 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8738 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8739void http_capture_bad_message(struct error_snapshot *es, struct stream *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8740 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8741 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8742{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8743 struct session *sess = strm_sess(s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8744 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8745 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8746
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8747 es->len = MIN(chn->buf->i, sizeof(es->buf));
8748 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8749 len1 = MIN(len1, es->len);
8750 len2 = es->len - len1; /* remaining data if buffer wraps */
8751
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8752 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8753 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8754 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8755
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8756 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8757 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8758 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8759 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8760
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8761 es->when = date; // user-visible date
8762 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8763 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8764 es->oe = other_end;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8765 if (objt_conn(sess->origin))
8766 es->src = __objt_conn(sess->origin)->addr.from;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8767 else
8768 memset(&es->src, 0, sizeof(es->src));
8769
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8770 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8771 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8772 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8773 es->s_flags = s->flags;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8774 es->t_flags = s->txn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8775 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8776 es->b_out = chn->buf->o;
8777 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8778 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8779 es->m_clen = msg->chunk_len;
8780 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8781}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8782
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8783/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8784 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8785 * performed over the whole headers. Otherwise it must contain a valid header
8786 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8787 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8788 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8789 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8790 * -1. The value fetch stops at commas, so this function is suited for use with
8791 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8792 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8793 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8794unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8795 struct hdr_idx *idx, int occ,
8796 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8797{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8798 struct hdr_ctx local_ctx;
8799 char *ptr_hist[MAX_HDR_HISTORY];
8800 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8801 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8802 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8803
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8804 if (!ctx) {
8805 local_ctx.idx = 0;
8806 ctx = &local_ctx;
8807 }
8808
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8809 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8810 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8811 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8812 occ--;
8813 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8814 *vptr = ctx->line + ctx->val;
8815 *vlen = ctx->vlen;
8816 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8817 }
8818 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8819 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8820 }
8821
8822 /* negative occurrence, we scan all the list then walk back */
8823 if (-occ > MAX_HDR_HISTORY)
8824 return 0;
8825
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8826 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8827 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8828 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8829 len_hist[hist_ptr] = ctx->vlen;
8830 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8831 hist_ptr = 0;
8832 found++;
8833 }
8834 if (-occ > found)
8835 return 0;
8836 /* 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]8837 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8838 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8839 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8840 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8841 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8842 if (hist_ptr >= MAX_HDR_HISTORY)
8843 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8844 *vptr = ptr_hist[hist_ptr];
8845 *vlen = len_hist[hist_ptr];
8846 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8847}
8848
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8849/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8850 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8851 * performed over the whole headers. Otherwise it must contain a valid header
8852 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8853 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8854 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8855 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8856 * -1. This function differs from http_get_hdr() in that it only returns full
8857 * line header values and does not stop at commas.
8858 * The return value is 0 if nothing was found, or non-zero otherwise.
8859 */
8860unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8861 struct hdr_idx *idx, int occ,
8862 struct hdr_ctx *ctx, char **vptr, int *vlen)
8863{
8864 struct hdr_ctx local_ctx;
8865 char *ptr_hist[MAX_HDR_HISTORY];
8866 int len_hist[MAX_HDR_HISTORY];
8867 unsigned int hist_ptr;
8868 int found;
8869
8870 if (!ctx) {
8871 local_ctx.idx = 0;
8872 ctx = &local_ctx;
8873 }
8874
8875 if (occ >= 0) {
8876 /* search from the beginning */
8877 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8878 occ--;
8879 if (occ <= 0) {
8880 *vptr = ctx->line + ctx->val;
8881 *vlen = ctx->vlen;
8882 return 1;
8883 }
8884 }
8885 return 0;
8886 }
8887
8888 /* negative occurrence, we scan all the list then walk back */
8889 if (-occ > MAX_HDR_HISTORY)
8890 return 0;
8891
8892 found = hist_ptr = 0;
8893 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8894 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8895 len_hist[hist_ptr] = ctx->vlen;
8896 if (++hist_ptr >= MAX_HDR_HISTORY)
8897 hist_ptr = 0;
8898 found++;
8899 }
8900 if (-occ > found)
8901 return 0;
8902 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
8903 * find occurrence -occ, so we have to check [hist_ptr+occ].
8904 */
8905 hist_ptr += occ;
8906 if (hist_ptr >= MAX_HDR_HISTORY)
8907 hist_ptr -= MAX_HDR_HISTORY;
8908 *vptr = ptr_hist[hist_ptr];
8909 *vlen = len_hist[hist_ptr];
8910 return 1;
8911}
8912
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8913/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8914 * Print a debug line with a header. Always stop at the first CR or LF char,
8915 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8916 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8917 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8918void debug_hdr(const char *dir, struct stream *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8919{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8920 struct session *sess = strm_sess(s);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8921 int max;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8922
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8923 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8924 dir,
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8925 objt_conn(sess->origin) ? (unsigned short)objt_conn(sess->origin)->t.sock.fd : -1,
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]8926 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]8927
8928 for (max = 0; start + max < end; max++)
8929 if (start[max] == '\r' || start[max] == '\n')
8930 break;
8931
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8932 UBOUND(max, trash.size - trash.len - 3);
8933 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8934 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8935 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8936}
8937
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8938
8939/* Allocate a new HTTP transaction for stream <s> unless there is one already.
8940 * The hdr_idx is allocated as well. In case of allocation failure, everything
8941 * allocated is freed and NULL is returned. Otherwise the new transaction is
8942 * assigned to the stream and returned.
8943 */
8944struct http_txn *http_alloc_txn(struct stream *s)
8945{
8946 struct http_txn *txn = s->txn;
8947
8948 if (txn)
8949 return txn;
8950
8951 txn = pool_alloc2(pool2_http_txn);
8952 if (!txn)
8953 return txn;
8954
8955 txn->hdr_idx.size = global.tune.max_http_hdr;
8956 txn->hdr_idx.v = pool_alloc2(pool2_hdr_idx);
8957 if (!txn->hdr_idx.v) {
8958 pool_free2(pool2_http_txn, txn);
8959 return NULL;
8960 }
8961
8962 s->txn = txn;
8963 return txn;
8964}
8965
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8966/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8967 * Initialize a new HTTP transaction for stream <s>. It is assumed that all
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8968 * the required fields are properly allocated and that we only need to (re)init
8969 * them. This should be used before processing any new request.
8970 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8971void http_init_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8972{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8973 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8974 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8975
8976 txn->flags = 0;
8977 txn->status = -1;
8978
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8979 txn->cookie_first_date = 0;
8980 txn->cookie_last_date = 0;
8981
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8982 txn->sessid = NULL;
8983 txn->srv_cookie = NULL;
8984 txn->cli_cookie = NULL;
8985 txn->uri = NULL;
8986
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8987 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8988 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8989 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8990 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8991 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8992 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]8993 txn->req.chunk_len = 0LL;
8994 txn->req.body_len = 0LL;
8995 txn->rsp.chunk_len = 0LL;
8996 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8997 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8998 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8999 txn->req.chn = &s->req;
9000 txn->rsp.chn = &s->res;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9001
9002 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9003
9004 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
9005 if (fe->options2 & PR_O2_REQBUG_OK)
9006 txn->req.err_pos = -1; /* let buggy requests pass */
9007
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9008 if (txn->hdr_idx.v)
9009 hdr_idx_init(&txn->hdr_idx);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]9010
9011 vars_init(&s->vars_txn, SCOPE_TXN);
9012 vars_init(&s->vars_reqres, SCOPE_REQ);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9013}
9014
9015/* to be used at the end of a transaction */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]9016void http_end_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9017{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]9018 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9019 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9020
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]9021 /* release any possible compression context */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]9022 if (s->flags & SF_COMP_READY)
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]9023 s->comp_algo->end(&s->comp_ctx);
9024 s->comp_algo = NULL;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]9025 s->flags &= ~SF_COMP_READY;
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]9026
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9027 /* these ones will have been dynamically allocated */
9028 pool_free2(pool2_requri, txn->uri);
9029 pool_free2(pool2_capture, txn->cli_cookie);
9030 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]9031 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]9032 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9033
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]9034 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]9035 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9036 txn->uri = NULL;
9037 txn->srv_cookie = NULL;
9038 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9039
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]9040 if (s->req_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9041 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]9042 for (h = fe->req_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]9043 pool_free2(h->pool, s->req_cap[h->index]);
9044 memset(s->req_cap, 0, fe->nb_req_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9045 }
9046
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]9047 if (s->res_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9048 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]9049 for (h = fe->rsp_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]9050 pool_free2(h->pool, s->res_cap[h->index]);
9051 memset(s->res_cap, 0, fe->nb_rsp_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9052 }
9053
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]9054 vars_prune(&s->vars_txn, s);
9055 vars_prune(&s->vars_reqres, s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9056}
9057
9058/* to be used at the end of a transaction to prepare a new one */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]9059void http_reset_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9060{
9061 http_end_txn(s);
9062 http_init_txn(s);
9063
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]9064 /* reinitialise the current rule list pointer to NULL. We are sure that
9065 * any rulelist match the NULL pointer.
9066 */
9067 s->current_rule_list = NULL;
9068
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9069 s->be = strm_fe(s);
9070 s->logs.logwait = strm_fe(s)->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]9071 s->logs.level = 0;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]9072 stream_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]9073 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]9074 /* re-init store persistence */
9075 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]9076 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]9077
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9078 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9079
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9080 s->req.flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9081
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]9082 /* We must trim any excess data from the response buffer, because we
9083 * may have blocked an invalid response from a server that we don't
9084 * want to accidentely forward once we disable the analysers, nor do
9085 * we want those data to come along with next response. A typical
9086 * example of such data would be from a buggy server responding to
9087 * a HEAD with some data, or sending more than the advertised
9088 * content-length.
9089 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9090 if (unlikely(s->res.buf->i))
9091 s->res.buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]9092
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9093 s->req.rto = strm_fe(s)->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9094 s->req.wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9095
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9096 s->res.rto = TICK_ETERNITY;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9097 s->res.wto = strm_fe(s)->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9098
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9099 s->req.rex = TICK_ETERNITY;
9100 s->req.wex = TICK_ETERNITY;
9101 s->req.analyse_exp = TICK_ETERNITY;
9102 s->res.rex = TICK_ETERNITY;
9103 s->res.wex = TICK_ETERNITY;
9104 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9105}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]9106
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9107void free_http_res_rules(struct list *r)
9108{
9109 struct http_res_rule *tr, *pr;
9110
9111 list_for_each_entry_safe(pr, tr, r, list) {
9112 LIST_DEL(&pr->list);
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9113 regex_free(&pr->arg.hdr_add.re);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9114 free(pr);
9115 }
9116}
9117
9118void free_http_req_rules(struct list *r)
9119{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9120 struct http_req_rule *tr, *pr;
9121
9122 list_for_each_entry_safe(pr, tr, r, list) {
9123 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9124 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9125 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9126
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9127 regex_free(&pr->arg.hdr_add.re);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9128 free(pr);
9129 }
9130}
9131
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9132/* parse an "http-request" rule */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9133struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
9134{
9135 struct http_req_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9136 struct http_req_action_kw *custom = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9137 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9138 char *error;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9139
9140 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
9141 if (!rule) {
9142 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9143 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9144 }
9145
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9146 rule->deny_status = HTTP_ERR_403;
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9147 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9148 rule->action = HTTP_REQ_ACT_ALLOW;
9149 cur_arg = 1;
Willy Tarreau5bd67592014-04-28 22:00:46 +0200[diff] [blame]9150 } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block")) {
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9151 int code;
9152 int hc;
9153
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9154 rule->action = HTTP_REQ_ACT_DENY;
9155 cur_arg = 1;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9156 if (strcmp(args[cur_arg], "deny_status") == 0) {
9157 cur_arg++;
9158 if (!args[cur_arg]) {
9159 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing status code.\n",
9160 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9161 goto out_err;
9162 }
9163
9164 code = atol(args[cur_arg]);
9165 cur_arg++;
9166 for (hc = 0; hc < HTTP_ERR_SIZE; hc++) {
9167 if (http_err_codes[hc] == code) {
9168 rule->deny_status = hc;
9169 break;
9170 }
9171 }
9172
9173 if (hc >= HTTP_ERR_SIZE) {
9174 Warning("parsing [%s:%d] : status code %d not handled, using default code 403.\n",
9175 file, linenum, code);
9176 }
9177 }
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]9178 } else if (!strcmp(args[0], "tarpit")) {
9179 rule->action = HTTP_REQ_ACT_TARPIT;
9180 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9181 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9182 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9183 cur_arg = 1;
9184
9185 while(*args[cur_arg]) {
9186 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9187 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9188 cur_arg+=2;
9189 continue;
9190 } else
9191 break;
9192 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9193 } else if (!strcmp(args[0], "set-nice")) {
9194 rule->action = HTTP_REQ_ACT_SET_NICE;
9195 cur_arg = 1;
9196
9197 if (!*args[cur_arg] ||
9198 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9199 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
9200 file, linenum, args[0]);
9201 goto out_err;
9202 }
9203 rule->arg.nice = atoi(args[cur_arg]);
9204 if (rule->arg.nice < -1024)
9205 rule->arg.nice = -1024;
9206 else if (rule->arg.nice > 1024)
9207 rule->arg.nice = 1024;
9208 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9209 } else if (!strcmp(args[0], "set-tos")) {
9210#ifdef IP_TOS
9211 char *err;
9212 rule->action = HTTP_REQ_ACT_SET_TOS;
9213 cur_arg = 1;
9214
9215 if (!*args[cur_arg] ||
9216 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9217 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
9218 file, linenum, args[0]);
9219 goto out_err;
9220 }
9221
9222 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9223 if (err && *err != '\0') {
9224 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
9225 file, linenum, err, args[0]);
9226 goto out_err;
9227 }
9228 cur_arg++;
9229#else
9230 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9231 goto out_err;
9232#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9233 } else if (!strcmp(args[0], "set-mark")) {
9234#ifdef SO_MARK
9235 char *err;
9236 rule->action = HTTP_REQ_ACT_SET_MARK;
9237 cur_arg = 1;
9238
9239 if (!*args[cur_arg] ||
9240 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9241 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
9242 file, linenum, args[0]);
9243 goto out_err;
9244 }
9245
9246 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9247 if (err && *err != '\0') {
9248 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
9249 file, linenum, err, args[0]);
9250 goto out_err;
9251 }
9252 cur_arg++;
9253 global.last_checks |= LSTCHK_NETADM;
9254#else
9255 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9256 goto out_err;
9257#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9258 } else if (!strcmp(args[0], "set-log-level")) {
9259 rule->action = HTTP_REQ_ACT_SET_LOGL;
9260 cur_arg = 1;
9261
9262 if (!*args[cur_arg] ||
9263 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9264 bad_log_level:
9265 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
9266 file, linenum, args[0]);
9267 goto out_err;
9268 }
9269 if (strcmp(args[cur_arg], "silent") == 0)
9270 rule->arg.loglevel = -1;
9271 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
9272 goto bad_log_level;
9273 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9274 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
9275 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
9276 cur_arg = 1;
9277
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]9278 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9279 (*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]9280 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9281 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9282 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9283 }
9284
9285 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9286 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9287 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]9288
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9289 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9290 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]9291 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9292 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9293 free(proxy->conf.lfs_file);
9294 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9295 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9296 cur_arg += 2;
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9297 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
9298 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]9299 cur_arg = 1;
9300
9301 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann92df3702014-06-24 11:10:00 +0200[diff] [blame]9302 (*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]9303 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
9304 file, linenum, args[0]);
9305 goto out_err;
9306 }
9307
9308 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9309 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9310 LIST_INIT(&rule->arg.hdr_add.fmt);
9311
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9312 error = NULL;
9313 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9314 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9315 args[cur_arg + 1], error);
9316 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9317 goto out_err;
9318 }
9319
9320 proxy->conf.args.ctx = ARGC_HRQ;
9321 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9322 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9323 file, linenum);
9324
9325 free(proxy->conf.lfs_file);
9326 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9327 proxy->conf.lfs_line = proxy->conf.args.line;
9328 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9329 } else if (strcmp(args[0], "del-header") == 0) {
9330 rule->action = HTTP_REQ_ACT_DEL_HDR;
9331 cur_arg = 1;
9332
9333 if (!*args[cur_arg] ||
9334 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9335 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9336 file, linenum, args[0]);
9337 goto out_err;
9338 }
9339
9340 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9341 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9342
9343 proxy->conf.args.ctx = ARGC_HRQ;
9344 free(proxy->conf.lfs_file);
9345 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9346 proxy->conf.lfs_line = proxy->conf.args.line;
9347 cur_arg += 1;
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9348 } else if (strncmp(args[0], "track-sc", 8) == 0 &&
9349 args[0][9] == '\0' && args[0][8] >= '0' &&
Willy Tarreaue1cfc1f2014-10-17 11:53:05 +0200[diff] [blame]9350 args[0][8] < '0' + MAX_SESS_STKCTR) { /* track-sc 0..9 */
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9351 struct sample_expr *expr;
9352 unsigned int where;
9353 char *err = NULL;
9354
9355 cur_arg = 1;
9356 proxy->conf.args.ctx = ARGC_TRK;
9357
9358 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9359 if (!expr) {
9360 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9361 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9362 free(err);
9363 goto out_err;
9364 }
9365
9366 where = 0;
9367 if (proxy->cap & PR_CAP_FE)
9368 where |= SMP_VAL_FE_HRQ_HDR;
9369 if (proxy->cap & PR_CAP_BE)
9370 where |= SMP_VAL_BE_HRQ_HDR;
9371
9372 if (!(expr->fetch->val & where)) {
9373 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule :"
9374 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9375 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9376 args[cur_arg-1], sample_src_names(expr->fetch->use));
9377 free(expr);
9378 goto out_err;
9379 }
9380
9381 if (strcmp(args[cur_arg], "table") == 0) {
9382 cur_arg++;
9383 if (!args[cur_arg]) {
9384 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing table name.\n",
9385 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9386 free(expr);
9387 goto out_err;
9388 }
9389 /* we copy the table name for now, it will be resolved later */
9390 rule->act_prm.trk_ctr.table.n = strdup(args[cur_arg]);
9391 cur_arg++;
9392 }
9393 rule->act_prm.trk_ctr.expr = expr;
9394 rule->action = HTTP_REQ_ACT_TRK_SC0 + args[0][8] - '0';
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9395 } else if (strcmp(args[0], "redirect") == 0) {
9396 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]9397 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9398
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9399 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]9400 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9401 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9402 goto out_err;
9403 }
9404
9405 /* this redirect rule might already contain a parsed condition which
9406 * we'll pass to the http-request rule.
9407 */
9408 rule->action = HTTP_REQ_ACT_REDIR;
9409 rule->arg.redir = redir;
9410 rule->cond = redir->cond;
9411 redir->cond = NULL;
9412 cur_arg = 2;
9413 return rule;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9414 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9415 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9416 rule->action = HTTP_REQ_ACT_ADD_ACL;
9417 /*
9418 * '+ 8' for 'add-acl('
9419 * '- 9' for 'add-acl(' + trailing ')'
9420 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9421 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9422
9423 cur_arg = 1;
9424
9425 if (!*args[cur_arg] ||
9426 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9427 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9428 file, linenum, args[0]);
9429 goto out_err;
9430 }
9431
9432 LIST_INIT(&rule->arg.map.key);
9433 proxy->conf.args.ctx = ARGC_HRQ;
9434 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9435 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9436 file, linenum);
9437 free(proxy->conf.lfs_file);
9438 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9439 proxy->conf.lfs_line = proxy->conf.args.line;
9440 cur_arg += 1;
9441 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9442 /* http-request del-acl(<reference (acl name)>) <key pattern> */
9443 rule->action = HTTP_REQ_ACT_DEL_ACL;
9444 /*
9445 * '+ 8' for 'del-acl('
9446 * '- 9' for 'del-acl(' + trailing ')'
9447 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9448 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9449
9450 cur_arg = 1;
9451
9452 if (!*args[cur_arg] ||
9453 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9454 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9455 file, linenum, args[0]);
9456 goto out_err;
9457 }
9458
9459 LIST_INIT(&rule->arg.map.key);
9460 proxy->conf.args.ctx = ARGC_HRQ;
9461 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9462 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9463 file, linenum);
9464 free(proxy->conf.lfs_file);
9465 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9466 proxy->conf.lfs_line = proxy->conf.args.line;
9467 cur_arg += 1;
9468 } else if (strncmp(args[0], "del-map", 7) == 0) {
9469 /* http-request del-map(<reference (map name)>) <key pattern> */
9470 rule->action = HTTP_REQ_ACT_DEL_MAP;
9471 /*
9472 * '+ 8' for 'del-map('
9473 * '- 9' for 'del-map(' + trailing ')'
9474 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9475 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9476
9477 cur_arg = 1;
9478
9479 if (!*args[cur_arg] ||
9480 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9481 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9482 file, linenum, args[0]);
9483 goto out_err;
9484 }
9485
9486 LIST_INIT(&rule->arg.map.key);
9487 proxy->conf.args.ctx = ARGC_HRQ;
9488 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9489 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9490 file, linenum);
9491 free(proxy->conf.lfs_file);
9492 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9493 proxy->conf.lfs_line = proxy->conf.args.line;
9494 cur_arg += 1;
9495 } else if (strncmp(args[0], "set-map", 7) == 0) {
9496 /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */
9497 rule->action = HTTP_REQ_ACT_SET_MAP;
9498 /*
9499 * '+ 8' for 'set-map('
9500 * '- 9' for 'set-map(' + trailing ')'
9501 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9502 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9503
9504 cur_arg = 1;
9505
9506 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9507 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9508 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9509 file, linenum, args[0]);
9510 goto out_err;
9511 }
9512
9513 LIST_INIT(&rule->arg.map.key);
9514 LIST_INIT(&rule->arg.map.value);
9515 proxy->conf.args.ctx = ARGC_HRQ;
9516
9517 /* key pattern */
9518 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9519 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9520 file, linenum);
9521
9522 /* value pattern */
9523 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, 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
9530 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9531 } else if (((custom = action_http_req_custom(args[0])) != NULL)) {
9532 char *errmsg = NULL;
9533 cur_arg = 1;
9534 /* try in the module list */
9535 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9536 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9537 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9538 free(errmsg);
9539 goto out_err;
9540 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9541 } else {
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]9542 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', but got '%s'%s.\n",
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9543 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9544 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9545 }
9546
9547 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9548 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9549 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9550
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9551 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9552 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
9553 file, linenum, args[0], errmsg);
9554 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9555 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9556 }
9557 rule->cond = cond;
9558 }
9559 else if (*args[cur_arg]) {
9560 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
9561 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9562 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9563 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9564 }
9565
9566 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9567 out_err:
9568 free(rule);
9569 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9570}
9571
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9572/* parse an "http-respose" rule */
9573struct http_res_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
9574{
9575 struct http_res_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9576 struct http_res_action_kw *custom = NULL;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9577 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9578 char *error;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9579
9580 rule = calloc(1, sizeof(*rule));
9581 if (!rule) {
9582 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
9583 goto out_err;
9584 }
9585
9586 if (!strcmp(args[0], "allow")) {
9587 rule->action = HTTP_RES_ACT_ALLOW;
9588 cur_arg = 1;
9589 } else if (!strcmp(args[0], "deny")) {
9590 rule->action = HTTP_RES_ACT_DENY;
9591 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9592 } else if (!strcmp(args[0], "set-nice")) {
9593 rule->action = HTTP_RES_ACT_SET_NICE;
9594 cur_arg = 1;
9595
9596 if (!*args[cur_arg] ||
9597 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9598 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
9599 file, linenum, args[0]);
9600 goto out_err;
9601 }
9602 rule->arg.nice = atoi(args[cur_arg]);
9603 if (rule->arg.nice < -1024)
9604 rule->arg.nice = -1024;
9605 else if (rule->arg.nice > 1024)
9606 rule->arg.nice = 1024;
9607 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9608 } else if (!strcmp(args[0], "set-tos")) {
9609#ifdef IP_TOS
9610 char *err;
9611 rule->action = HTTP_RES_ACT_SET_TOS;
9612 cur_arg = 1;
9613
9614 if (!*args[cur_arg] ||
9615 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9616 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9617 file, linenum, args[0]);
9618 goto out_err;
9619 }
9620
9621 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9622 if (err && *err != '\0') {
9623 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9624 file, linenum, err, args[0]);
9625 goto out_err;
9626 }
9627 cur_arg++;
9628#else
9629 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9630 goto out_err;
9631#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9632 } else if (!strcmp(args[0], "set-mark")) {
9633#ifdef SO_MARK
9634 char *err;
9635 rule->action = HTTP_RES_ACT_SET_MARK;
9636 cur_arg = 1;
9637
9638 if (!*args[cur_arg] ||
9639 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9640 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9641 file, linenum, args[0]);
9642 goto out_err;
9643 }
9644
9645 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9646 if (err && *err != '\0') {
9647 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9648 file, linenum, err, args[0]);
9649 goto out_err;
9650 }
9651 cur_arg++;
9652 global.last_checks |= LSTCHK_NETADM;
9653#else
9654 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9655 goto out_err;
9656#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9657 } else if (!strcmp(args[0], "set-log-level")) {
9658 rule->action = HTTP_RES_ACT_SET_LOGL;
9659 cur_arg = 1;
9660
9661 if (!*args[cur_arg] ||
9662 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9663 bad_log_level:
9664 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
9665 file, linenum, args[0]);
9666 goto out_err;
9667 }
9668 if (strcmp(args[cur_arg], "silent") == 0)
9669 rule->arg.loglevel = -1;
9670 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
9671 goto bad_log_level;
9672 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9673 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
9674 rule->action = *args[0] == 'a' ? HTTP_RES_ACT_ADD_HDR : HTTP_RES_ACT_SET_HDR;
9675 cur_arg = 1;
9676
9677 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9678 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9679 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9680 file, linenum, args[0]);
9681 goto out_err;
9682 }
9683
9684 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9685 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9686 LIST_INIT(&rule->arg.hdr_add.fmt);
9687
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9688 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9689 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]9690 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9691 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9692 free(proxy->conf.lfs_file);
9693 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9694 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9695 cur_arg += 2;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9696 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9697 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]9698 cur_arg = 1;
9699
9700 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann12cb00b2014-08-08 17:29:06 +0200[diff] [blame]9701 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
9702 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 3 arguments.\n",
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9703 file, linenum, args[0]);
9704 goto out_err;
9705 }
9706
9707 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9708 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9709 LIST_INIT(&rule->arg.hdr_add.fmt);
9710
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9711 error = NULL;
9712 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9713 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9714 args[cur_arg + 1], error);
9715 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9716 goto out_err;
9717 }
9718
9719 proxy->conf.args.ctx = ARGC_HRQ;
9720 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9721 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9722 file, linenum);
9723
9724 free(proxy->conf.lfs_file);
9725 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9726 proxy->conf.lfs_line = proxy->conf.args.line;
9727 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9728 } else if (strcmp(args[0], "del-header") == 0) {
9729 rule->action = HTTP_RES_ACT_DEL_HDR;
9730 cur_arg = 1;
9731
9732 if (!*args[cur_arg] ||
9733 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9734 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9735 file, linenum, args[0]);
9736 goto out_err;
9737 }
9738
9739 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9740 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9741
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9742 proxy->conf.args.ctx = ARGC_HRS;
9743 free(proxy->conf.lfs_file);
9744 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9745 proxy->conf.lfs_line = proxy->conf.args.line;
9746 cur_arg += 1;
9747 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9748 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9749 rule->action = HTTP_RES_ACT_ADD_ACL;
9750 /*
9751 * '+ 8' for 'add-acl('
9752 * '- 9' for 'add-acl(' + trailing ')'
9753 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9754 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9755
9756 cur_arg = 1;
9757
9758 if (!*args[cur_arg] ||
9759 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9760 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9761 file, linenum, args[0]);
9762 goto out_err;
9763 }
9764
9765 LIST_INIT(&rule->arg.map.key);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9766 proxy->conf.args.ctx = ARGC_HRS;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9767 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9768 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9769 file, linenum);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9770 free(proxy->conf.lfs_file);
9771 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9772 proxy->conf.lfs_line = proxy->conf.args.line;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9773
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9774 cur_arg += 1;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9775 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9776 /* http-response del-acl(<reference (acl name)>) <key pattern> */
9777 rule->action = HTTP_RES_ACT_DEL_ACL;
9778 /*
9779 * '+ 8' for 'del-acl('
9780 * '- 9' for 'del-acl(' + trailing ')'
9781 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9782 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9783
9784 cur_arg = 1;
9785
9786 if (!*args[cur_arg] ||
9787 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9788 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9789 file, linenum, args[0]);
9790 goto out_err;
9791 }
9792
9793 LIST_INIT(&rule->arg.map.key);
9794 proxy->conf.args.ctx = ARGC_HRS;
9795 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9796 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9797 file, linenum);
9798 free(proxy->conf.lfs_file);
9799 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9800 proxy->conf.lfs_line = proxy->conf.args.line;
9801 cur_arg += 1;
9802 } else if (strncmp(args[0], "del-map", 7) == 0) {
9803 /* http-response del-map(<reference (map name)>) <key pattern> */
9804 rule->action = HTTP_RES_ACT_DEL_MAP;
9805 /*
9806 * '+ 8' for 'del-map('
9807 * '- 9' for 'del-map(' + trailing ')'
9808 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9809 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9810
9811 cur_arg = 1;
9812
9813 if (!*args[cur_arg] ||
9814 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9815 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9816 file, linenum, args[0]);
9817 goto out_err;
9818 }
9819
9820 LIST_INIT(&rule->arg.map.key);
9821 proxy->conf.args.ctx = ARGC_HRS;
9822 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9823 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9824 file, linenum);
9825 free(proxy->conf.lfs_file);
9826 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9827 proxy->conf.lfs_line = proxy->conf.args.line;
9828 cur_arg += 1;
9829 } else if (strncmp(args[0], "set-map", 7) == 0) {
9830 /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */
9831 rule->action = HTTP_RES_ACT_SET_MAP;
9832 /*
9833 * '+ 8' for 'set-map('
9834 * '- 9' for 'set-map(' + trailing ')'
9835 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9836 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9837
9838 cur_arg = 1;
9839
9840 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9841 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9842 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9843 file, linenum, args[0]);
9844 goto out_err;
9845 }
9846
9847 LIST_INIT(&rule->arg.map.key);
9848 LIST_INIT(&rule->arg.map.value);
9849
9850 proxy->conf.args.ctx = ARGC_HRS;
9851
9852 /* key pattern */
9853 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9854 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9855 file, linenum);
9856
9857 /* value pattern */
9858 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9859 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9860 file, linenum);
9861
9862 free(proxy->conf.lfs_file);
9863 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9864 proxy->conf.lfs_line = proxy->conf.args.line;
9865
9866 cur_arg += 2;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]9867 } else if (strcmp(args[0], "redirect") == 0) {
9868 struct redirect_rule *redir;
9869 char *errmsg = NULL;
9870
9871 if ((redir = http_parse_redirect_rule(file, linenum, proxy, (const char **)args + 1, &errmsg, 1, 1)) == NULL) {
9872 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9873 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9874 goto out_err;
9875 }
9876
9877 /* this redirect rule might already contain a parsed condition which
9878 * we'll pass to the http-request rule.
9879 */
9880 rule->action = HTTP_RES_ACT_REDIR;
9881 rule->arg.redir = redir;
9882 rule->cond = redir->cond;
9883 redir->cond = NULL;
9884 cur_arg = 2;
9885 return rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9886 } else if (((custom = action_http_res_custom(args[0])) != NULL)) {
9887 char *errmsg = NULL;
9888 cur_arg = 1;
9889 /* try in the module list */
9890 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9891 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9892 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9893 free(errmsg);
9894 goto out_err;
9895 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9896 } else {
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]9897 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]9898 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
9899 goto out_err;
9900 }
9901
9902 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9903 struct acl_cond *cond;
9904 char *errmsg = NULL;
9905
9906 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9907 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
9908 file, linenum, args[0], errmsg);
9909 free(errmsg);
9910 goto out_err;
9911 }
9912 rule->cond = cond;
9913 }
9914 else if (*args[cur_arg]) {
9915 Alert("parsing [%s:%d]: 'http-response %s' expects"
9916 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9917 file, linenum, args[0], args[cur_arg]);
9918 goto out_err;
9919 }
9920
9921 return rule;
9922 out_err:
9923 free(rule);
9924 return NULL;
9925}
9926
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9927/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9928 * 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]9929 * dynamic log-format rule instead of a static string. Parameter <dir> indicates
9930 * the direction of the rule, and equals 0 for request, non-zero for responses.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9931 */
9932struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9933 const char **args, char **errmsg, int use_fmt, int dir)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9934{
9935 struct redirect_rule *rule;
9936 int cur_arg;
9937 int type = REDIRECT_TYPE_NONE;
9938 int code = 302;
9939 const char *destination = NULL;
9940 const char *cookie = NULL;
9941 int cookie_set = 0;
9942 unsigned int flags = REDIRECT_FLAG_NONE;
9943 struct acl_cond *cond = NULL;
9944
9945 cur_arg = 0;
9946 while (*(args[cur_arg])) {
9947 if (strcmp(args[cur_arg], "location") == 0) {
9948 if (!*args[cur_arg + 1])
9949 goto missing_arg;
9950
9951 type = REDIRECT_TYPE_LOCATION;
9952 cur_arg++;
9953 destination = args[cur_arg];
9954 }
9955 else if (strcmp(args[cur_arg], "prefix") == 0) {
9956 if (!*args[cur_arg + 1])
9957 goto missing_arg;
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9958 type = REDIRECT_TYPE_PREFIX;
9959 cur_arg++;
9960 destination = args[cur_arg];
9961 }
9962 else if (strcmp(args[cur_arg], "scheme") == 0) {
9963 if (!*args[cur_arg + 1])
9964 goto missing_arg;
9965
9966 type = REDIRECT_TYPE_SCHEME;
9967 cur_arg++;
9968 destination = args[cur_arg];
9969 }
9970 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
9971 if (!*args[cur_arg + 1])
9972 goto missing_arg;
9973
9974 cur_arg++;
9975 cookie = args[cur_arg];
9976 cookie_set = 1;
9977 }
9978 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
9979 if (!*args[cur_arg + 1])
9980 goto missing_arg;
9981
9982 cur_arg++;
9983 cookie = args[cur_arg];
9984 cookie_set = 0;
9985 }
9986 else if (strcmp(args[cur_arg], "code") == 0) {
9987 if (!*args[cur_arg + 1])
9988 goto missing_arg;
9989
9990 cur_arg++;
9991 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9992 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9993 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9994 "'%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]9995 args[cur_arg - 1], args[cur_arg]);
9996 return NULL;
9997 }
9998 }
9999 else if (!strcmp(args[cur_arg],"drop-query")) {
10000 flags |= REDIRECT_FLAG_DROP_QS;
10001 }
10002 else if (!strcmp(args[cur_arg],"append-slash")) {
10003 flags |= REDIRECT_FLAG_APPEND_SLASH;
10004 }
10005 else if (strcmp(args[cur_arg], "if") == 0 ||
10006 strcmp(args[cur_arg], "unless") == 0) {
10007 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
10008 if (!cond) {
10009 memprintf(errmsg, "error in condition: %s", *errmsg);
10010 return NULL;
10011 }
10012 break;
10013 }
10014 else {
10015 memprintf(errmsg,
10016 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
10017 args[cur_arg]);
10018 return NULL;
10019 }
10020 cur_arg++;
10021 }
10022
10023 if (type == REDIRECT_TYPE_NONE) {
10024 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
10025 return NULL;
10026 }
10027
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]10028 if (dir && type != REDIRECT_TYPE_LOCATION) {
10029 memprintf(errmsg, "response only supports redirect type 'location'");
10030 return NULL;
10031 }
10032
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10033 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
10034 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]10035 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10036
10037 if (!use_fmt) {
10038 /* old-style static redirect rule */
10039 rule->rdr_str = strdup(destination);
10040 rule->rdr_len = strlen(destination);
10041 }
10042 else {
10043 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10044
10045 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
10046 * if prefix == "/", we don't want to add anything, otherwise it
10047 * makes it hard for the user to configure a self-redirection.
10048 */
Godbachd9722032014-12-18 15:44:58 +0800[diff] [blame]10049 curproxy->conf.args.ctx = ARGC_RDR;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10050 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]10051 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]10052 dir ? (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRS_HDR : SMP_VAL_BE_HRS_HDR
10053 : (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]10054 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]10055 free(curproxy->conf.lfs_file);
10056 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
10057 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10058 }
10059 }
10060
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10061 if (cookie) {
10062 /* depending on cookie_set, either we want to set the cookie, or to clear it.
10063 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
10064 */
10065 rule->cookie_len = strlen(cookie);
10066 if (cookie_set) {
10067 rule->cookie_str = malloc(rule->cookie_len + 10);
10068 memcpy(rule->cookie_str, cookie, rule->cookie_len);
10069 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
10070 rule->cookie_len += 9;
10071 } else {
10072 rule->cookie_str = malloc(rule->cookie_len + 21);
10073 memcpy(rule->cookie_str, cookie, rule->cookie_len);
10074 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
10075 rule->cookie_len += 20;
10076 }
10077 }
10078 rule->type = type;
10079 rule->code = code;
10080 rule->flags = flags;
10081 LIST_INIT(&rule->list);
10082 return rule;
10083
10084 missing_arg:
10085 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
10086 return NULL;
10087}
10088
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10089/************************************************************************/
10090/* The code below is dedicated to ACL parsing and matching */
10091/************************************************************************/
10092
10093
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10094/* This function ensures that the prerequisites for an L7 fetch are ready,
10095 * which means that a request or response is ready. If some data is missing,
10096 * 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]10097 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
10098 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10099 *
10100 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10101 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
10102 * decide whether or not an HTTP message is present ;
10103 * 0 if the requested data cannot be fetched or if it is certain that
10104 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10105 * 1 if an HTTP message is ready
10106 */
10107static int
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10108smp_prefetch_http(struct proxy *px, struct stream *s, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10109 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10110{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10111 struct http_txn *txn;
10112 struct http_msg *msg;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10113
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]10114 /* Note: this function may only be used from places where
10115 * http_init_txn() has already been done, and implies that <s>,
10116 * <txn>, and <hdr_idx.v> are properly set. An extra check protects
10117 * against an eventual mistake in the fetch capability matrix.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10118 */
10119
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10120 if (!s)
10121 return 0;
10122 txn = s->txn;
10123
10124 if (!txn)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10125 return 0;
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10126 msg = &txn->req;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10127
10128 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10129 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10130
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10131 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10132 /* If the buffer does not leave enough free space at the end,
10133 * we must first realign it.
10134 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10135 if (s->req.buf->p > s->req.buf->data &&
10136 s->req.buf->i + s->req.buf->p > s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)
10137 buffer_slow_realign(s->req.buf);
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10138
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10139 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]10140 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10141 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10142
10143 /* Try to decode HTTP request */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10144 if (likely(msg->next < s->req.buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10145 http_msg_analyzer(msg, &txn->hdr_idx);
10146
10147 /* Still no valid request ? */
10148 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]10149 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10150 buffer_full(s->req.buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10151 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10152 }
10153 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10154 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10155 return 0;
10156 }
10157
10158 /* OK we just got a valid HTTP request. We have some minor
10159 * preparation to perform so that further checks can rely
10160 * on HTTP tests.
10161 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10162
10163 /* If the request was parsed but was too large, we must absolutely
10164 * return an error so that it is not processed. At the moment this
10165 * cannot happen, but if the parsers are to change in the future,
10166 * we want this check to be maintained.
10167 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10168 if (unlikely(s->req.buf->i + s->req.buf->p >
10169 s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10170 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10171 smp->data.uint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10172 return 1;
10173 }
10174
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10175 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10176 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]10177 s->flags |= SF_REDIRECTABLE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10178
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10179 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
10180 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10181 }
10182
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10183 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10184 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10185 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10186
10187 /* otherwise everything's ready for the request */
10188 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10189 else {
10190 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10191 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
10192 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10193 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10194 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10195 }
10196
10197 /* everything's OK */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10198 smp->data.uint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10199 return 1;
10200}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10201
Willy Tarreau6c616e02014-06-25 16:56:41 +0200[diff] [blame]10202/* Note: these functinos *do* modify the sample. Even in case of success, at
10203 * least the type and uint value are modified.
10204 */
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10205#define CHECK_HTTP_MESSAGE_FIRST() \
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10206 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]10207
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10208#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10209 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]10210
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10211
10212/* 1. Check on METHOD
10213 * We use the pre-parsed method if it is known, and store its number as an
10214 * integer. If it is unknown, we use the pointer and the length.
10215 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]10216static int pat_parse_meth(const char *text, struct pattern *pattern, int mflags, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10217{
10218 int len, meth;
10219
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]10220 len = strlen(text);
10221 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10222
10223 pattern->val.i = meth;
10224 if (meth == HTTP_METH_OTHER) {
Willy Tarreau912c1192014-08-29 15:15:50 +0200[diff] [blame]10225 pattern->ptr.str = (char *)text;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10226 pattern->len = len;
10227 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10228 else {
10229 pattern->ptr.str = NULL;
10230 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10231 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10232 return 1;
10233}
10234
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10235/* This function fetches the method of current HTTP request and stores
10236 * it in the global pattern struct as a chunk. There are two possibilities :
10237 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
10238 * in <len> and <ptr> is NULL ;
10239 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
10240 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10241 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10242 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10243static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10244smp_fetch_meth(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10245{
10246 int meth;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10247 struct http_txn *txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10248
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10249 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10250
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10251 meth = txn->meth;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10252 smp->type = SMP_T_METH;
10253 smp->data.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10254 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10255 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
10256 /* ensure the indexes are not affected */
10257 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10258 smp->flags |= SMP_F_CONST;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10259 smp->data.meth.str.len = txn->req.sl.rq.m_l;
10260 smp->data.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10261 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10262 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10263 return 1;
10264}
10265
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10266/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10267static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10268{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10269 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10270 struct pattern_list *lst;
10271 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10272
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10273 list_for_each_entry(lst, &expr->patterns, list) {
10274 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10275
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10276 /* well-known method */
10277 if (pattern->val.i != HTTP_METH_OTHER) {
10278 if (smp->data.meth.meth == pattern->val.i)
10279 return pattern;
10280 else
10281 continue;
10282 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10283
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10284 /* Other method, we must compare the strings */
10285 if (pattern->len != smp->data.meth.str.len)
10286 continue;
10287
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]10288 icase = expr->mflags & PAT_MF_IGNORE_CASE;
Willy Tarreau4de2a942014-08-28 20:42:57 +0200[diff] [blame]10289 if ((icase && strncasecmp(pattern->ptr.str, smp->data.meth.str.str, smp->data.meth.str.len) == 0) ||
10290 (!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]10291 return pattern;
10292 }
10293 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10294}
10295
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10296static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10297smp_fetch_rqver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10298{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10299 struct http_txn *txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10300 char *ptr;
10301 int len;
10302
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10303 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10304
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10305 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10306 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10307
10308 while ((len-- > 0) && (*ptr++ != '/'));
10309 if (len <= 0)
10310 return 0;
10311
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10312 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10313 smp->data.str.str = ptr;
10314 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10315
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10316 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10317 return 1;
10318}
10319
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10320static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10321smp_fetch_stver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10322{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10323 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10324 char *ptr;
10325 int len;
10326
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10327 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10328
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10329 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10330 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10331 return 0;
10332
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10333 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10334 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10335
10336 while ((len-- > 0) && (*ptr++ != '/'));
10337 if (len <= 0)
10338 return 0;
10339
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10340 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10341 smp->data.str.str = ptr;
10342 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10343
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10344 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10345 return 1;
10346}
10347
10348/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10349static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10350smp_fetch_stcode(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10351{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10352 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10353 char *ptr;
10354 int len;
10355
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10356 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10357
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10358 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10359 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10360 return 0;
10361
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10362 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10363 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10364
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10365 smp->type = SMP_T_UINT;
10366 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10367 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10368 return 1;
10369}
10370
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10371/* returns the longest available part of the body. This requires that the body
10372 * has been waited for using http-buffer-request.
10373 */
10374static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10375smp_fetch_body(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10376{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10377 struct http_txn *txn = smp->strm->txn;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10378 struct http_msg *msg;
10379 unsigned long len;
10380 unsigned long block1;
10381 char *body;
10382 struct chunk *temp;
10383
10384 CHECK_HTTP_MESSAGE_FIRST();
10385
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10386 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10387 msg = &txn->req;
10388 else
10389 msg = &txn->rsp;
10390
10391 len = http_body_bytes(msg);
10392 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
10393
10394 block1 = len;
10395 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
10396 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
10397
10398 if (block1 == len) {
10399 /* buffer is not wrapped (or empty) */
10400 smp->type = SMP_T_BIN;
10401 smp->data.str.str = body;
10402 smp->data.str.len = len;
10403 smp->flags = SMP_F_VOL_TEST | SMP_F_CONST;
10404 }
10405 else {
10406 /* buffer is wrapped, we need to defragment it */
10407 temp = get_trash_chunk();
10408 memcpy(temp->str, body, block1);
10409 memcpy(temp->str + block1, msg->chn->buf->data, len - block1);
10410 smp->type = SMP_T_BIN;
10411 smp->data.str.str = temp->str;
10412 smp->data.str.len = len;
10413 smp->flags = SMP_F_VOL_TEST;
10414 }
10415 return 1;
10416}
10417
10418
10419/* returns the available length of the body. This requires that the body
10420 * has been waited for using http-buffer-request.
10421 */
10422static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10423smp_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]10424{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10425 struct http_txn *txn = smp->strm->txn;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10426 struct http_msg *msg;
10427
10428 CHECK_HTTP_MESSAGE_FIRST();
10429
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10430 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10431 msg = &txn->req;
10432 else
10433 msg = &txn->rsp;
10434
10435 smp->type = SMP_T_UINT;
10436 smp->data.uint = http_body_bytes(msg);
10437
10438 smp->flags = SMP_F_VOL_TEST;
10439 return 1;
10440}
10441
10442
10443/* returns the advertised length of the body, or the advertised size of the
10444 * chunks available in the buffer. This requires that the body has been waited
10445 * for using http-buffer-request.
10446 */
10447static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10448smp_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]10449{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10450 struct http_txn *txn = smp->strm->txn;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10451 struct http_msg *msg;
10452
10453 CHECK_HTTP_MESSAGE_FIRST();
10454
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10455 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10456 msg = &txn->req;
10457 else
10458 msg = &txn->rsp;
10459
10460 smp->type = SMP_T_UINT;
10461 smp->data.uint = msg->body_len;
10462
10463 smp->flags = SMP_F_VOL_TEST;
10464 return 1;
10465}
10466
10467
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10468/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10469static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10470smp_fetch_url(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10471{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10472 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10473
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10474 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10475
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10476 txn = smp->strm->txn;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10477 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10478 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10479 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10480 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10481 return 1;
10482}
10483
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10484static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10485smp_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]10486{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10487 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10488 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10489
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10490 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10491
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10492 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10493 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]10494 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]10495 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10496
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10497 smp->type = SMP_T_IPV4;
10498 smp->data.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10499 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10500 return 1;
10501}
10502
10503static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10504smp_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]10505{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10506 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10507 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10508
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10509 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10510
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10511 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10512 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]10513 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
10514 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10515
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10516 smp->type = SMP_T_UINT;
10517 smp->data.uint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]10518 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10519 return 1;
10520}
10521
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10522/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10523 * Accepts an optional argument of type string containing the header field name,
10524 * and an optional argument of type signed or unsigned integer to request an
10525 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10526 * headers are considered from the first one. It does not stop on commas and
10527 * returns full lines instead (useful for User-Agent or Date for example).
10528 */
10529static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10530smp_fetch_fhdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10531{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10532 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10533 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10534 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10535 int occ = 0;
10536 const char *name_str = NULL;
10537 int name_len = 0;
10538
10539 if (!ctx) {
10540 /* first call */
10541 ctx = &static_hdr_ctx;
10542 ctx->idx = 0;
10543 smp->ctx.a[0] = ctx;
10544 }
10545
10546 if (args) {
10547 if (args[0].type != ARGT_STR)
10548 return 0;
10549 name_str = args[0].data.str.str;
10550 name_len = args[0].data.str.len;
10551
10552 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
10553 occ = args[1].data.uint;
10554 }
10555
10556 CHECK_HTTP_MESSAGE_FIRST();
10557
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10558 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10559 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]10560
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10561 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
10562 /* search for header from the beginning */
10563 ctx->idx = 0;
10564
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10565 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10566 /* no explicit occurrence and single fetch => last header by default */
10567 occ = -1;
10568
10569 if (!occ)
10570 /* prepare to report multiple occurrences for ACL fetches */
10571 smp->flags |= SMP_F_NOT_LAST;
10572
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10573 smp->type = SMP_T_STR;
10574 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10575 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.str.str, &smp->data.str.len))
10576 return 1;
10577
10578 smp->flags &= ~SMP_F_NOT_LAST;
10579 return 0;
10580}
10581
10582/* 6. Check on HTTP header count. The number of occurrences is returned.
10583 * Accepts exactly 1 argument of type string. It does not stop on commas and
10584 * returns full lines instead (useful for User-Agent or Date for example).
10585 */
10586static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10587smp_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]10588{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10589 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10590 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10591 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10592 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10593 const char *name = NULL;
10594 int len = 0;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10595
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10596 if (args && args->type == ARGT_STR) {
10597 name = args->data.str.str;
10598 len = args->data.str.len;
10599 }
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10600
10601 CHECK_HTTP_MESSAGE_FIRST();
10602
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10603 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10604 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]10605
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10606 ctx.idx = 0;
10607 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10608 while (http_find_full_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10609 cnt++;
10610
10611 smp->type = SMP_T_UINT;
10612 smp->data.uint = cnt;
10613 smp->flags = SMP_F_VOL_HDR;
10614 return 1;
10615}
10616
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10617static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10618smp_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]10619{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10620 struct hdr_idx *idx;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10621 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10622 const struct http_msg *msg;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10623 struct chunk *temp;
10624 char del = ',';
10625
10626 if (args && args->type == ARGT_STR)
10627 del = *args[0].data.str.str;
10628
10629 CHECK_HTTP_MESSAGE_FIRST();
10630
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10631 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10632 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]10633
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10634 temp = get_trash_chunk();
10635
10636 ctx.idx = 0;
10637 while (http_find_next_header(msg->chn->buf->p, idx, &ctx)) {
10638 if (temp->len)
10639 temp->str[temp->len++] = del;
10640 memcpy(temp->str + temp->len, ctx.line, ctx.del);
10641 temp->len += ctx.del;
10642 }
10643
10644 smp->type = SMP_T_STR;
10645 smp->data.str.str = temp->str;
10646 smp->data.str.len = temp->len;
10647 smp->flags = SMP_F_VOL_HDR;
10648 return 1;
10649}
10650
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10651/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10652 * Accepts an optional argument of type string containing the header field name,
10653 * and an optional argument of type signed or unsigned integer to request an
10654 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10655 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10656 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10657static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10658smp_fetch_hdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10659{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10660 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10661 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10662 const struct http_msg *msg;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10663 int occ = 0;
10664 const char *name_str = NULL;
10665 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10666
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10667 if (!ctx) {
10668 /* first call */
10669 ctx = &static_hdr_ctx;
10670 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]10671 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10672 }
10673
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10674 if (args) {
10675 if (args[0].type != ARGT_STR)
10676 return 0;
10677 name_str = args[0].data.str.str;
10678 name_len = args[0].data.str.len;
10679
10680 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
10681 occ = args[1].data.uint;
10682 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10683
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10684 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10685
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10686 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10687 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]10688
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10689 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10690 /* search for header from the beginning */
10691 ctx->idx = 0;
10692
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10693 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10694 /* no explicit occurrence and single fetch => last header by default */
10695 occ = -1;
10696
10697 if (!occ)
10698 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10699 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]10700
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10701 smp->type = SMP_T_STR;
10702 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10703 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]10704 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10705
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10706 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10707 return 0;
10708}
10709
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10710/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10711 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10712 */
10713static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10714smp_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]10715{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10716 struct hdr_idx *idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10717 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10718 const struct http_msg *msg;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10719 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10720 const char *name = NULL;
10721 int len = 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10722
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10723 if (args && args->type == ARGT_STR) {
10724 name = args->data.str.str;
10725 len = args->data.str.len;
10726 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10727
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10728 CHECK_HTTP_MESSAGE_FIRST();
10729
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10730 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10731 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]10732
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10733 ctx.idx = 0;
10734 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10735 while (http_find_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10736 cnt++;
10737
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10738 smp->type = SMP_T_UINT;
10739 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10740 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10741 return 1;
10742}
10743
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10744/* Fetch an HTTP header's integer value. The integer value is returned. It
10745 * takes a mandatory argument of type string and an optional one of type int
10746 * to designate a specific occurrence. It returns an unsigned integer, which
10747 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10748 */
10749static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10750smp_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]10751{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10752 int ret = smp_fetch_hdr(args, smp, kw, private);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10753
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10754 if (ret > 0) {
10755 smp->type = SMP_T_UINT;
10756 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
10757 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10758
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10759 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10760}
10761
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10762/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
10763 * and an optional one of type int to designate a specific occurrence.
10764 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10765 */
10766static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10767smp_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]10768{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10769 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10770
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10771 while ((ret = smp_fetch_hdr(args, smp, kw, private)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10772 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
10773 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10774 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10775 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10776 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10777 if (smp->data.str.len < temp->size - 1) {
10778 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
10779 temp->str[smp->data.str.len] = '\0';
10780 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
10781 smp->type = SMP_T_IPV6;
10782 break;
10783 }
10784 }
10785 }
10786
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10787 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10788 if (!(smp->flags & SMP_F_NOT_LAST))
10789 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10790 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10791 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10792}
10793
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10794/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
10795 * the first '/' after the possible hostname, and ends before the possible '?'.
10796 */
10797static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10798smp_fetch_path(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10799{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10800 struct http_txn *txn;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10801 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10802
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10803 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10804
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10805 txn = smp->strm->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10806 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]10807 ptr = http_get_path(txn);
10808 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10809 return 0;
10810
10811 /* OK, we got the '/' ! */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10812 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10813 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10814
10815 while (ptr < end && *ptr != '?')
10816 ptr++;
10817
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10818 smp->data.str.len = ptr - smp->data.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10819 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10820 return 1;
10821}
10822
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10823/* This produces a concatenation of the first occurrence of the Host header
10824 * followed by the path component if it begins with a slash ('/'). This means
10825 * that '*' will not be added, resulting in exactly the first Host entry.
10826 * If no Host header is found, then the path is returned as-is. The returned
10827 * 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]10828 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10829 */
10830static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10831smp_fetch_base(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10832{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10833 struct http_txn *txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10834 char *ptr, *end, *beg;
10835 struct hdr_ctx ctx;
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10836 struct chunk *temp;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10837
10838 CHECK_HTTP_MESSAGE_FIRST();
10839
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10840 txn = smp->strm->txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10841 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10842 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]10843 return smp_fetch_path(args, smp, kw, private);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10844
10845 /* 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]10846 temp = get_trash_chunk();
10847 memcpy(temp->str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10848 smp->type = SMP_T_STR;
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10849 smp->data.str.str = temp->str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10850 smp->data.str.len = ctx.vlen;
10851
10852 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10853 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]10854 beg = http_get_path(txn);
10855 if (!beg)
10856 beg = end;
10857
10858 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10859
10860 if (beg < ptr && *beg == '/') {
10861 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
10862 smp->data.str.len += ptr - beg;
10863 }
10864
10865 smp->flags = SMP_F_VOL_1ST;
10866 return 1;
10867}
10868
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10869/* This produces a 32-bit hash of the concatenation of the first occurrence of
10870 * the Host header followed by the path component if it begins with a slash ('/').
10871 * This means that '*' will not be added, resulting in exactly the first Host
10872 * 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]10873 * is hashed using the path hash followed by a full avalanche hash and provides a
10874 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10875 * high-traffic sites without having to store whole paths.
10876 */
Thierry FOURNIER055b9d52014-07-15 16:11:07 +0200[diff] [blame]10877int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10878smp_fetch_base32(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10879{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10880 struct http_txn *txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10881 struct hdr_ctx ctx;
10882 unsigned int hash = 0;
10883 char *ptr, *beg, *end;
10884 int len;
10885
10886 CHECK_HTTP_MESSAGE_FIRST();
10887
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10888 txn = smp->strm->txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10889 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10890 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]10891 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10892 ptr = ctx.line + ctx.val;
10893 len = ctx.vlen;
10894 while (len--)
10895 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10896 }
10897
10898 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10899 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]10900 beg = http_get_path(txn);
10901 if (!beg)
10902 beg = end;
10903
10904 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10905
10906 if (beg < ptr && *beg == '/') {
10907 while (beg < ptr)
10908 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10909 }
10910 hash = full_hash(hash);
10911
10912 smp->type = SMP_T_UINT;
10913 smp->data.uint = hash;
10914 smp->flags = SMP_F_VOL_1ST;
10915 return 1;
10916}
10917
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10918/* 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]10919 * path as returned by smp_fetch_base32(). The idea is to have per-source and
10920 * per-path counters. The result is a binary block from 8 to 20 bytes depending
10921 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10922 * that in environments where IPv6 is insignificant, truncating the output to
10923 * 8 bytes would still work.
10924 */
10925static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10926smp_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]10927{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10928 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10929 struct connection *cli_conn = objt_conn(smp->sess->origin);
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10930
10931 if (!cli_conn)
10932 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10933
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10934 if (!smp_fetch_base32(args, smp, kw, private))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10935 return 0;
10936
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10937 temp = get_trash_chunk();
Willy Tarreau5ad6e1d2014-07-15 21:34:06 +0200[diff] [blame]10938 *(unsigned int *)temp->str = htonl(smp->data.uint);
10939 temp->len += sizeof(unsigned int);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10940
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10941 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10942 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10943 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]10944 temp->len += 4;
10945 break;
10946 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10947 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]10948 temp->len += 16;
10949 break;
10950 default:
10951 return 0;
10952 }
10953
10954 smp->data.str = *temp;
10955 smp->type = SMP_T_BIN;
10956 return 1;
10957}
10958
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10959/* Extracts the query string, which comes after the question mark '?'. If no
10960 * question mark is found, nothing is returned. Otherwise it returns a sample
10961 * of type string carrying the whole query string.
10962 */
10963static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10964smp_fetch_query(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10965{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10966 struct http_txn *txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10967 char *ptr, *end;
10968
10969 CHECK_HTTP_MESSAGE_FIRST();
10970
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10971 txn = smp->strm->txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10972 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
10973 end = ptr + txn->req.sl.rq.u_l;
10974
10975 /* look up the '?' */
10976 do {
10977 if (ptr == end)
10978 return 0;
10979 } while (*ptr++ != '?');
10980
10981 smp->type = SMP_T_STR;
10982 smp->data.str.str = ptr;
10983 smp->data.str.len = end - ptr;
10984 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
10985 return 1;
10986}
10987
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10988static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10989smp_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]10990{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10991 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
10992 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
10993 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10994
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10995 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10996
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10997 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]10998 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10999 return 1;
11000}
11001
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]11002/* return a valid test if the current request is the first one on the connection */
11003static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11004smp_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]11005{
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11006 smp->type = SMP_T_BOOL;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11007 smp->data.uint = !(smp->strm->txn->flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]11008 return 1;
11009}
11010
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11011/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11012static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11013smp_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]11014{
11015
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11016 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11017 return 0;
11018
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]11019 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11020
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11021 if (!get_http_auth(smp->strm))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11022 return 0;
11023
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11024 smp->type = SMP_T_BOOL;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11025 smp->data.uint = check_user(args->data.usr, smp->strm->txn->auth.user,
11026 smp->strm->txn->auth.pass);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11027 return 1;
11028}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11029
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11030/* Accepts exactly 1 argument of type userlist */
11031static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11032smp_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]11033{
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11034 if (!args || args->type != ARGT_USR)
11035 return 0;
11036
11037 CHECK_HTTP_MESSAGE_FIRST();
11038
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11039 if (!get_http_auth(smp->strm))
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11040 return 0;
11041
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11042 /* if the user does not belong to the userlist or has a wrong password,
11043 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]11044 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11045 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11046 if (!check_user(args->data.usr, smp->strm->txn->auth.user,
11047 smp->strm->txn->auth.pass))
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]11048 return 0;
11049
11050 /* pat_match_auth() will need the user list */
11051 smp->ctx.a[0] = args->data.usr;
11052
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11053 smp->type = SMP_T_STR;
11054 smp->flags = SMP_F_CONST;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11055 smp->data.str.str = smp->strm->txn->auth.user;
11056 smp->data.str.len = strlen(smp->strm->txn->auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11057
11058 return 1;
11059}
11060
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11061/* Try to find the next occurrence of a cookie name in a cookie header value.
11062 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
11063 * the cookie value is returned into *value and *value_l, and the function
11064 * returns a pointer to the next pointer to search from if the value was found.
11065 * Otherwise if the cookie was not found, NULL is returned and neither value
11066 * nor value_l are touched. The input <hdr> string should first point to the
11067 * header's value, and the <hdr_end> pointer must point to the first character
11068 * not part of the value. <list> must be non-zero if value may represent a list
11069 * of values (cookie headers). This makes it faster to abort parsing when no
11070 * list is expected.
11071 */
11072static char *
11073extract_cookie_value(char *hdr, const char *hdr_end,
11074 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]11075 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11076{
11077 char *equal, *att_end, *att_beg, *val_beg, *val_end;
11078 char *next;
11079
11080 /* we search at least a cookie name followed by an equal, and more
11081 * generally something like this :
11082 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
11083 */
11084 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
11085 /* Iterate through all cookies on this line */
11086
11087 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
11088 att_beg++;
11089
11090 /* find att_end : this is the first character after the last non
11091 * space before the equal. It may be equal to hdr_end.
11092 */
11093 equal = att_end = att_beg;
11094
11095 while (equal < hdr_end) {
11096 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
11097 break;
11098 if (http_is_spht[(unsigned char)*equal++])
11099 continue;
11100 att_end = equal;
11101 }
11102
11103 /* here, <equal> points to '=', a delimitor or the end. <att_end>
11104 * is between <att_beg> and <equal>, both may be identical.
11105 */
11106
11107 /* look for end of cookie if there is an equal sign */
11108 if (equal < hdr_end && *equal == '=') {
11109 /* look for the beginning of the value */
11110 val_beg = equal + 1;
11111 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
11112 val_beg++;
11113
11114 /* find the end of the value, respecting quotes */
11115 next = find_cookie_value_end(val_beg, hdr_end);
11116
11117 /* make val_end point to the first white space or delimitor after the value */
11118 val_end = next;
11119 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
11120 val_end--;
11121 } else {
11122 val_beg = val_end = next = equal;
11123 }
11124
11125 /* We have nothing to do with attributes beginning with '$'. However,
11126 * they will automatically be removed if a header before them is removed,
11127 * since they're supposed to be linked together.
11128 */
11129 if (*att_beg == '$')
11130 continue;
11131
11132 /* Ignore cookies with no equal sign */
11133 if (equal == next)
11134 continue;
11135
11136 /* Now we have the cookie name between att_beg and att_end, and
11137 * its value between val_beg and val_end.
11138 */
11139
11140 if (att_end - att_beg == cookie_name_l &&
11141 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
11142 /* let's return this value and indicate where to go on from */
11143 *value = val_beg;
11144 *value_l = val_end - val_beg;
11145 return next + 1;
11146 }
11147
11148 /* Set-Cookie headers only have the name in the first attr=value part */
11149 if (!list)
11150 break;
11151 }
11152
11153 return NULL;
11154}
11155
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11156/* Fetch a captured HTTP request header. The index is the position of
11157 * the "capture" option in the configuration file
11158 */
11159static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11160smp_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]11161{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11162 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11163 int idx;
11164
11165 if (!args || args->type != ARGT_UINT)
11166 return 0;
11167
11168 idx = args->data.uint;
11169
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11170 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]11171 return 0;
11172
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11173 smp->type = SMP_T_STR;
11174 smp->flags |= SMP_F_CONST;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11175 smp->data.str.str = smp->strm->req_cap[idx];
11176 smp->data.str.len = strlen(smp->strm->req_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11177
11178 return 1;
11179}
11180
11181/* Fetch a captured HTTP response header. The index is the position of
11182 * the "capture" option in the configuration file
11183 */
11184static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11185smp_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]11186{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11187 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11188 int idx;
11189
11190 if (!args || args->type != ARGT_UINT)
11191 return 0;
11192
11193 idx = args->data.uint;
11194
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11195 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]11196 return 0;
11197
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11198 smp->type = SMP_T_STR;
11199 smp->flags |= SMP_F_CONST;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11200 smp->data.str.str = smp->strm->res_cap[idx];
11201 smp->data.str.len = strlen(smp->strm->res_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11202
11203 return 1;
11204}
11205
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11206/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
11207static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11208smp_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]11209{
11210 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11211 struct http_txn *txn = smp->strm->txn;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11212 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11213
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11214 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11215 return 0;
11216
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11217 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11218
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11219 while (*ptr != ' ' && *ptr != '\0') /* find first space */
11220 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11221
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11222 temp = get_trash_chunk();
11223 temp->str = txn->uri;
11224 temp->len = ptr - txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11225 smp->data.str = *temp;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11226 smp->type = SMP_T_STR;
11227 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11228
11229 return 1;
11230
11231}
11232
11233/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
11234static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11235smp_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]11236{
11237 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11238 struct http_txn *txn = smp->strm->txn;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11239 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11240
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11241 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11242 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11243
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11244 ptr = txn->uri;
11245
11246 while (*ptr != ' ' && *ptr != '\0') /* find first space */
11247 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11248
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11249 if (!*ptr)
11250 return 0;
11251
11252 ptr++; /* skip the space */
11253
11254 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11255 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11256 if (!ptr)
11257 return 0;
11258 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
11259 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11260
11261 smp->data.str = *temp;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11262 smp->data.str.len = ptr - temp->str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11263 smp->type = SMP_T_STR;
11264 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11265
11266 return 1;
11267}
11268
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11269/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
11270 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11271 */
11272static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11273smp_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]11274{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11275 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11276
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11277 if (!txn || txn->req.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11278 return 0;
11279
11280 if (txn->req.flags & HTTP_MSGF_VER_11)
11281 smp->data.str.str = "HTTP/1.1";
11282 else
11283 smp->data.str.str = "HTTP/1.0";
11284
11285 smp->data.str.len = 8;
11286 smp->type = SMP_T_STR;
11287 smp->flags = SMP_F_CONST;
11288 return 1;
11289
11290}
11291
11292/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
11293 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11294 */
11295static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11296smp_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]11297{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11298 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11299
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11300 if (!txn || txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11301 return 0;
11302
11303 if (txn->rsp.flags & HTTP_MSGF_VER_11)
11304 smp->data.str.str = "HTTP/1.1";
11305 else
11306 smp->data.str.str = "HTTP/1.0";
11307
11308 smp->data.str.len = 8;
11309 smp->type = SMP_T_STR;
11310 smp->flags = SMP_F_CONST;
11311 return 1;
11312
11313}
11314
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11315
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11316/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11317 * 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]11318 * 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]11319 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11320 * 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]11321 * Accepts exactly 1 argument of type string. If the input options indicate
11322 * that no iterating is desired, then only last value is fetched if any.
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]11323 * The returned sample is of type CSTR. Can be used to parse cookies in other
11324 * files.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11325 */
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11326int 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]11327{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11328 struct http_txn *txn;
11329 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11330 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11331 const struct http_msg *msg;
11332 const char *hdr_name;
11333 int hdr_name_len;
11334 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11335 int occ = 0;
11336 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11337
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11338 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11339 return 0;
11340
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11341 if (!ctx) {
11342 /* first call */
11343 ctx = &static_hdr_ctx;
11344 ctx->idx = 0;
11345 smp->ctx.a[2] = ctx;
11346 }
11347
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11348 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11349
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11350 txn = smp->strm->txn;
11351 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11352
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11353 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11354 msg = &txn->req;
11355 hdr_name = "Cookie";
11356 hdr_name_len = 6;
11357 } else {
11358 msg = &txn->rsp;
11359 hdr_name = "Set-Cookie";
11360 hdr_name_len = 10;
11361 }
11362
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11363 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11364 /* no explicit occurrence and single fetch => last cookie by default */
11365 occ = -1;
11366
11367 /* OK so basically here, either we want only one value and it's the
11368 * last one, or we want to iterate over all of them and we fetch the
11369 * next one.
11370 */
11371
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11372 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11373 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11374 /* search for the header from the beginning, we must first initialize
11375 * the search parameters.
11376 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11377 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11378 ctx->idx = 0;
11379 }
11380
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11381 smp->flags |= SMP_F_VOL_HDR;
11382
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11383 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11384 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
11385 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11386 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
11387 goto out;
11388
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11389 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11390 continue;
11391
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11392 smp->ctx.a[0] = ctx->line + ctx->val;
11393 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11394 }
11395
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11396 smp->type = SMP_T_STR;
11397 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11398 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]11399 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11400 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11401 &smp->data.str.str,
11402 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11403 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11404 found = 1;
11405 if (occ >= 0) {
11406 /* one value was returned into smp->data.str.{str,len} */
11407 smp->flags |= SMP_F_NOT_LAST;
11408 return 1;
11409 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11410 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11411 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11412 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11413 /* all cookie headers and values were scanned. If we're looking for the
11414 * last occurrence, we may return it now.
11415 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11416 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11417 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11418 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11419}
11420
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11421/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11422 * 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]11423 * multiple cookies may be parsed on the same line. The returned sample is of
11424 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11425 */
11426static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11427smp_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]11428{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11429 struct http_txn *txn;
11430 struct hdr_idx *idx;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11431 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11432 const struct http_msg *msg;
11433 const char *hdr_name;
11434 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11435 int cnt;
11436 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11437 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11438
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11439 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11440 return 0;
11441
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11442 CHECK_HTTP_MESSAGE_FIRST();
11443
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11444 txn = smp->strm->txn;
11445 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11446
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11447 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11448 msg = &txn->req;
11449 hdr_name = "Cookie";
11450 hdr_name_len = 6;
11451 } else {
11452 msg = &txn->rsp;
11453 hdr_name = "Set-Cookie";
11454 hdr_name_len = 10;
11455 }
11456
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11457 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]11458 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11459 ctx.idx = 0;
11460 cnt = 0;
11461
11462 while (1) {
11463 /* Note: val_beg == NULL every time we need to fetch a new header */
11464 if (!val_beg) {
11465 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
11466 break;
11467
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11468 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11469 continue;
11470
11471 val_beg = ctx.line + ctx.val;
11472 val_end = val_beg + ctx.vlen;
11473 }
11474
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11475 smp->type = SMP_T_STR;
11476 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11477 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11478 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11479 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11480 &smp->data.str.str,
11481 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11482 cnt++;
11483 }
11484 }
11485
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]11486 smp->type = SMP_T_UINT;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11487 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11488 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11489 return 1;
11490}
11491
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11492/* Fetch an cookie's integer value. The integer value is returned. It
11493 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
11494 */
11495static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11496smp_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]11497{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11498 int ret = smp_fetch_cookie(args, smp, kw, private);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11499
11500 if (ret > 0) {
11501 smp->type = SMP_T_UINT;
11502 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
11503 }
11504
11505 return ret;
11506}
11507
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11508/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]11509/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11510/************************************************************************/
11511
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11512/*
11513 * Given a path string and its length, find the position of beginning of the
11514 * query string. Returns NULL if no query string is found in the path.
11515 *
11516 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
11517 *
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11518 * find_query_string(path, n, '?') points to "yo=mama;ye=daddy" string.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11519 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11520static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11521{
11522 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]11523
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11524 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11525 return p ? p + 1 : NULL;
11526}
11527
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11528static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11529{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11530 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11531}
11532
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11533/* after increasing a pointer value, it can exceed the first buffer
11534 * size. This function transform the value of <ptr> according with
11535 * the expected position. <chunks> is an array of the one or two
11536 * avalaible chunks. The first value is the start of the first chunk,
11537 * the second value if the end+1 of the first chunks. The third value
11538 * is NULL or the start of the second chunk and the fourth value is
11539 * the end+1 of the second chunk. The function returns 1 if does a
11540 * wrap, else returns 0.
11541 */
11542static inline int fix_pointer_if_wrap(const char **chunks, const char **ptr)
11543{
11544 if (*ptr < chunks[1])
11545 return 0;
11546 if (!chunks[2])
11547 return 0;
11548 *ptr = chunks[2] + ( *ptr - chunks[1] );
11549 return 1;
11550}
11551
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11552/*
11553 * Given a url parameter, find the starting position of the first occurence,
11554 * or NULL if the parameter is not found.
11555 *
11556 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
11557 * the function will return query_string+8.
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11558 *
11559 * Warning:this function returns a pointer that can be point to the first chunk
11560 * or the second chunk. The caller must be check the position before using the
11561 * result.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11562 */
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11563static const char *
11564find_url_param_pos(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11565 const char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11566 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11567{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11568 const char *pos, *last, *equal;
11569 const char **bufs = chunks;
11570 int l1, l2;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11571
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11572
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11573 pos = bufs[0];
11574 last = bufs[1];
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11575 while (pos <= last) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11576 /* Check the equal. */
11577 equal = pos + url_param_name_l;
11578 if (fix_pointer_if_wrap(chunks, &equal)) {
11579 if (equal >= chunks[3])
11580 return NULL;
11581 } else {
11582 if (equal >= chunks[1])
11583 return NULL;
11584 }
11585 if (*equal == '=') {
11586 if (pos + url_param_name_l > last) {
11587 /* process wrap case, we detect a wrap. In this case, the
11588 * comparison is performed in two parts.
11589 */
11590
11591 /* This is the end, we dont have any other chunk. */
11592 if (bufs != chunks || !bufs[2])
11593 return NULL;
11594
11595 /* Compute the length of each part of the comparison. */
11596 l1 = last - pos;
11597 l2 = url_param_name_l - l1;
11598
11599 /* The second buffer is too short to contain the compared string. */
11600 if (bufs[2] + l2 > bufs[3])
11601 return NULL;
11602
11603 if (memcmp(pos, url_param_name, l1) == 0 &&
11604 memcmp(bufs[2], url_param_name+l1, l2) == 0)
11605 return pos;
11606
11607 /* Perform wrapping and jump the string who fail the comparison. */
11608 bufs += 2;
11609 pos = bufs[0] + l2;
11610 last = bufs[1];
11611
11612 } else {
11613 /* process a simple comparison. */
11614 if (memcmp(pos, url_param_name, url_param_name_l) == 0) {
11615 return pos; }
11616 pos += url_param_name_l + 1;
11617 if (fix_pointer_if_wrap(chunks, &pos))
11618 last = bufs[2];
11619 }
11620 }
11621
11622 while (1) {
11623 /* Look for the next delimiter. */
11624 while (pos <= last && !is_param_delimiter(*pos, delim))
11625 pos++;
11626 if (pos < last)
11627 break;
11628 /* process buffer wrapping. */
11629 if (bufs != chunks || !bufs[2])
11630 return NULL;
11631 bufs += 2;
11632 pos = bufs[0];
11633 last = bufs[1];
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11634 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11635 pos++;
11636 }
11637 return NULL;
11638}
11639
11640/*
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11641 * Given a url parameter name and a query string, returns its value and size
11642 * into *value and *value_l respectively, and returns non-zero. An empty
11643 * url_param_name matches the first available parameter. If the parameter is
11644 * not found, zero is returned and value/value_l are not touched.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11645 */
11646static int
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11647find_next_url_param(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11648 const char* url_param_name, size_t url_param_name_l,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11649 const char **vstart, const char **vend, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11650{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11651 const char *arg_start, *qs_end;
11652 const char *value_start, *value_end;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11653
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11654 arg_start = chunks[0];
11655 qs_end = chunks[1];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11656 if (url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11657 /* Looks for an argument name. */
11658 arg_start = find_url_param_pos(chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11659 url_param_name, url_param_name_l,
11660 delim);
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11661 /* Check for wrapping. */
11662 if (arg_start > qs_end)
11663 qs_end = chunks[3];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11664 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11665 if (!arg_start)
11666 return 0;
11667
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11668 if (!url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11669 while (1) {
11670 /* looks for the first argument. */
11671 value_start = memchr(arg_start, '=', qs_end - arg_start);
11672 if (!value_start) {
11673
11674 /* Check for wrapping. */
11675 if (arg_start >= chunks[0] &&
11676 arg_start <= chunks[1] &&
11677 chunks[2]) {
11678 arg_start = chunks[2];
11679 qs_end = chunks[3];
11680 continue;
11681 }
11682 return 0;
11683 }
11684 break;
11685 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11686 value_start++;
11687 }
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11688 else {
11689 /* Jump the argument length. */
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11690 value_start = arg_start + url_param_name_l + 1;
11691
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11692 /* Check for pointer wrapping. */
11693 if (fix_pointer_if_wrap(chunks, &value_start)) {
11694 /* Update the end pointer. */
11695 qs_end = chunks[3];
11696
11697 /* Check for overflow. */
11698 if (value_start > qs_end)
11699 return 0;
11700 }
11701 }
11702
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11703 value_end = value_start;
11704
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11705 while (1) {
11706 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
11707 value_end++;
11708 if (value_end < qs_end)
11709 break;
11710 /* process buffer wrapping. */
11711 if (value_end >= chunks[0] &&
11712 value_end <= chunks[1] &&
11713 chunks[2]) {
11714 value_end = chunks[2];
11715 qs_end = chunks[3];
11716 continue;
11717 }
11718 break;
11719 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11720
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11721 *vstart = value_start;
11722 *vend = value_end;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]11723 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11724}
11725
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11726/* This scans a URL-encoded query string. It takes an optionally wrapping
11727 * string whose first contigous chunk has its beginning in ctx->a[0] and end
11728 * in ctx->a[1], and the optional second part in (ctx->a[2]..ctx->a[3]). The
11729 * pointers are updated for next iteration before leaving.
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11730 */
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11731static int
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11732smp_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]11733{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11734 const char *vstart, *vend;
11735 struct chunk *temp;
11736 const char **chunks = (const char **)smp->ctx.a;
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11737
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11738 if (!find_next_url_param(chunks,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11739 name, name_len,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11740 &vstart, &vend,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11741 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11742 return 0;
11743
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11744 /* Create sample. If the value is contiguous, return the pointer as CONST,
11745 * if the value is wrapped, copy-it in a buffer.
11746 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11747 smp->type = SMP_T_STR;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11748 if (chunks[2] &&
11749 vstart >= chunks[0] && vstart <= chunks[1] &&
11750 vend >= chunks[2] && vend <= chunks[3]) {
11751 /* Wrapped case. */
11752 temp = get_trash_chunk();
11753 memcpy(temp->str, vstart, chunks[1] - vstart);
11754 memcpy(temp->str + ( chunks[1] - vstart ), chunks[2], vend - chunks[2]);
11755 smp->data.str.str = temp->str;
11756 smp->data.str.len = ( chunks[1] - vstart ) + ( vend - chunks[2] );
11757 } else {
11758 /* Contiguous case. */
11759 smp->data.str.str = (char *)vstart;
11760 smp->data.str.len = vend - vstart;
11761 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
11762 }
11763
11764 /* Update context, check wrapping. */
11765 chunks[0] = vend;
11766 if (chunks[2] && vend >= chunks[2] && vend <= chunks[3]) {
11767 chunks[1] = chunks[3];
11768 chunks[2] = NULL;
11769 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11770
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11771 if (chunks[0] < chunks[1])
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11772 smp->flags |= SMP_F_NOT_LAST;
11773
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11774 return 1;
11775}
11776
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11777/* This function iterates over each parameter of the query string. It uses
11778 * 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]11779 * parameter. Since it uses smp_fetch_param(), ctx->a[2..3] are both NULL.
11780 * An optional parameter name is passed in args[0], otherwise any parameter is
11781 * considered. It supports an optional delimiter argument for the beginning of
11782 * the string in args[1], which defaults to "?".
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11783 */
11784static int
11785smp_fetch_url_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11786{
11787 struct http_msg *msg;
11788 char delim = '?';
11789 const char *name;
11790 int name_len;
11791
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11792 if (!args ||
11793 (args[0].type && args[0].type != ARGT_STR) ||
11794 (args[1].type && args[1].type != ARGT_STR))
11795 return 0;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11796
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11797 name = "";
11798 name_len = 0;
11799 if (args->type == ARGT_STR) {
11800 name = args->data.str.str;
11801 name_len = args->data.str.len;
11802 }
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11803
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11804 if (args[1].type)
11805 delim = *args[1].data.str.str;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11806
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11807 if (!smp->ctx.a[0]) { // first call, find the query string
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11808 CHECK_HTTP_MESSAGE_FIRST();
11809
11810 msg = &smp->strm->txn->req;
11811
11812 smp->ctx.a[0] = find_param_list(msg->chn->buf->p + msg->sl.rq.u,
11813 msg->sl.rq.u_l, delim);
11814 if (!smp->ctx.a[0])
11815 return 0;
11816
11817 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]11818
11819 /* Assume that the context is filled with NULL pointer
11820 * before the first call.
11821 * smp->ctx.a[2] = NULL;
11822 * smp->ctx.a[3] = NULL;
11823 */
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11824 }
11825
11826 return smp_fetch_param(delim, name, name_len, args, smp, kw, private);
11827}
11828
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11829/* This function iterates over each parameter of the body. This requires
11830 * that the body has been waited for using http-buffer-request. It uses
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11831 * ctx->a[0] and ctx->a[1] to store the beginning and end of the first
11832 * contigous part of the body, and optionally ctx->a[2..3] to reference the
11833 * optional second part if the body wraps at the end of the buffer. An optional
11834 * parameter name is passed in args[0], otherwise any parameter is considered.
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11835 */
11836static int
11837smp_fetch_body_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11838{
11839 struct http_txn *txn = smp->strm->txn;
11840 struct http_msg *msg;
11841 unsigned long len;
11842 unsigned long block1;
11843 char *body;
11844 const char *name;
11845 int name_len;
11846
11847 if (!args || (args[0].type && args[0].type != ARGT_STR))
11848 return 0;
11849
11850 name = "";
11851 name_len = 0;
11852 if (args[0].type == ARGT_STR) {
11853 name = args[0].data.str.str;
11854 name_len = args[0].data.str.len;
11855 }
11856
11857 if (!smp->ctx.a[0]) { // first call, find the query string
11858 CHECK_HTTP_MESSAGE_FIRST();
11859
11860 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
11861 msg = &txn->req;
11862 else
11863 msg = &txn->rsp;
11864
11865 len = http_body_bytes(msg);
11866 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
11867
11868 block1 = len;
11869 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
11870 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
11871
11872 if (block1 == len) {
11873 /* buffer is not wrapped (or empty) */
11874 smp->ctx.a[0] = body;
11875 smp->ctx.a[1] = body + len;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11876
11877 /* Assume that the context is filled with NULL pointer
11878 * before the first call.
11879 * smp->ctx.a[2] = NULL;
11880 * smp->ctx.a[3] = NULL;
11881 */
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11882 }
11883 else {
11884 /* buffer is wrapped, we need to defragment it */
11885 smp->ctx.a[0] = body;
11886 smp->ctx.a[1] = body + block1;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11887 smp->ctx.a[2] = msg->chn->buf->data;
11888 smp->ctx.a[3] = msg->chn->buf->data + ( len - block1 );
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11889 }
11890 }
11891 return smp_fetch_param('&', name, name_len, args, smp, kw, private);
11892}
11893
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11894/* Return the signed integer value for the specified url parameter (see url_param
11895 * above).
11896 */
11897static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11898smp_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]11899{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11900 int ret = smp_fetch_url_param(args, smp, kw, private);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11901
11902 if (ret > 0) {
11903 smp->type = SMP_T_UINT;
11904 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
11905 }
11906
11907 return ret;
11908}
11909
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11910/* This produces a 32-bit hash of the concatenation of the first occurrence of
11911 * the Host header followed by the path component if it begins with a slash ('/').
11912 * This means that '*' will not be added, resulting in exactly the first Host
11913 * entry. If no Host header is found, then the path is used. The resulting value
11914 * is hashed using the url hash followed by a full avalanche hash and provides a
11915 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
11916 * high-traffic sites without having to store whole paths.
11917 * this differs from the base32 functions in that it includes the url parameters
11918 * as well as the path
11919 */
11920static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11921smp_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]11922{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11923 struct http_txn *txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11924 struct hdr_ctx ctx;
11925 unsigned int hash = 0;
11926 char *ptr, *beg, *end;
11927 int len;
11928
11929 CHECK_HTTP_MESSAGE_FIRST();
11930
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11931 txn = smp->strm->txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11932 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11933 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]11934 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
11935 ptr = ctx.line + ctx.val;
11936 len = ctx.vlen;
11937 while (len--)
11938 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
11939 }
11940
11941 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11942 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]11943 beg = http_get_path(txn);
11944 if (!beg)
11945 beg = end;
11946
11947 for (ptr = beg; ptr < end ; ptr++);
11948
11949 if (beg < ptr && *beg == '/') {
11950 while (beg < ptr)
11951 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
11952 }
11953 hash = full_hash(hash);
11954
11955 smp->type = SMP_T_UINT;
11956 smp->data.uint = hash;
11957 smp->flags = SMP_F_VOL_1ST;
11958 return 1;
11959}
11960
11961/* This concatenates the source address with the 32-bit hash of the Host and
11962 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
11963 * per-url counters. The result is a binary block from 8 to 20 bytes depending
11964 * on the source address length. The URL hash is stored before the address so
11965 * that in environments where IPv6 is insignificant, truncating the output to
11966 * 8 bytes would still work.
11967 */
11968static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11969smp_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]11970{
11971 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11972 struct connection *cli_conn = objt_conn(smp->sess->origin);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11973
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11974 if (!smp_fetch_url32(args, smp, kw, private))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11975 return 0;
11976
11977 temp = get_trash_chunk();
11978 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
11979 temp->len += sizeof(smp->data.uint);
11980
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11981 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11982 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11983 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]11984 temp->len += 4;
11985 break;
11986 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11987 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]11988 temp->len += 16;
11989 break;
11990 default:
11991 return 0;
11992 }
11993
11994 smp->data.str = *temp;
11995 smp->type = SMP_T_BIN;
11996 return 1;
11997}
11998
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11999/* This function is used to validate the arguments passed to any "hdr" fetch
12000 * keyword. These keywords support an optional positive or negative occurrence
12001 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
12002 * is assumed that the types are already the correct ones. Returns 0 on error,
12003 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
12004 * error message in case of error, that the caller is responsible for freeing.
12005 * The initial location must either be freeable or NULL.
12006 */
Thierry FOURNIER49f45af2014-12-08 19:50:43 +0100[diff] [blame]12007int val_hdr(struct arg *arg, char **err_msg)
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]12008{
12009 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]12010 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]12011 return 0;
12012 }
12013 return 1;
12014}
12015
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12016/* takes an UINT value on input supposed to represent the time since EPOCH,
12017 * adds an optional offset found in args[0] and emits a string representing
12018 * the date in RFC-1123/5322 format.
12019 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12020static int sample_conv_http_date(const struct arg *args, struct sample *smp, void *private)
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12021{
12022 const char day[7][4] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
12023 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
12024 struct chunk *temp;
12025 struct tm *tm;
12026 time_t curr_date = smp->data.uint;
12027
12028 /* add offset */
12029 if (args && (args[0].type == ARGT_SINT || args[0].type == ARGT_UINT))
12030 curr_date += args[0].data.sint;
12031
12032 tm = gmtime(&curr_date);
12033
12034 temp = get_trash_chunk();
12035 temp->len = snprintf(temp->str, temp->size - temp->len,
12036 "%s, %02d %s %04d %02d:%02d:%02d GMT",
12037 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
12038 tm->tm_hour, tm->tm_min, tm->tm_sec);
12039
12040 smp->data.str = *temp;
12041 smp->type = SMP_T_STR;
12042 return 1;
12043}
12044
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12045/* Match language range with language tag. RFC2616 14.4:
12046 *
12047 * A language-range matches a language-tag if it exactly equals
12048 * the tag, or if it exactly equals a prefix of the tag such
12049 * that the first tag character following the prefix is "-".
12050 *
12051 * Return 1 if the strings match, else return 0.
12052 */
12053static inline int language_range_match(const char *range, int range_len,
12054 const char *tag, int tag_len)
12055{
12056 const char *end = range + range_len;
12057 const char *tend = tag + tag_len;
12058 while (range < end) {
12059 if (*range == '-' && tag == tend)
12060 return 1;
12061 if (*range != *tag || tag == tend)
12062 return 0;
12063 range++;
12064 tag++;
12065 }
12066 /* Return true only if the last char of the tag is matched. */
12067 return tag == tend;
12068}
12069
12070/* Arguments: The list of expected value, the number of parts returned and the separator */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12071static int sample_conv_q_prefered(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12072{
12073 const char *al = smp->data.str.str;
12074 const char *end = al + smp->data.str.len;
12075 const char *token;
12076 int toklen;
12077 int qvalue;
12078 const char *str;
12079 const char *w;
12080 int best_q = 0;
12081
12082 /* Set the constant to the sample, because the output of the
12083 * function will be peek in the constant configuration string.
12084 */
12085 smp->flags |= SMP_F_CONST;
12086 smp->data.str.size = 0;
12087 smp->data.str.str = "";
12088 smp->data.str.len = 0;
12089
12090 /* Parse the accept language */
12091 while (1) {
12092
12093 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12094 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12095 al++;
12096 if (al >= end)
12097 break;
12098
12099 /* Start of the fisrt word. */
12100 token = al;
12101
12102 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12103 while (al < end && *al != ';' && *al != ',' && !isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12104 al++;
12105 if (al == token)
12106 goto expect_comma;
12107
12108 /* Length of the token. */
12109 toklen = al - token;
12110 qvalue = 1000;
12111
12112 /* Check if the token exists in the list. If the token not exists,
12113 * jump to the next token.
12114 */
12115 str = args[0].data.str.str;
12116 w = str;
12117 while (1) {
12118 if (*str == ';' || *str == '\0') {
12119 if (language_range_match(token, toklen, w, str-w))
12120 goto look_for_q;
12121 if (*str == '\0')
12122 goto expect_comma;
12123 w = str + 1;
12124 }
12125 str++;
12126 }
12127 goto expect_comma;
12128
12129look_for_q:
12130
12131 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12132 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12133 al++;
12134 if (al >= end)
12135 goto process_value;
12136
12137 /* If ',' is found, process the result */
12138 if (*al == ',')
12139 goto process_value;
12140
12141 /* If the character is different from ';', look
12142 * for the end of the header part in best effort.
12143 */
12144 if (*al != ';')
12145 goto expect_comma;
12146
12147 /* Assumes that the char is ';', now expect "q=". */
12148 al++;
12149
12150 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12151 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12152 al++;
12153 if (al >= end)
12154 goto process_value;
12155
12156 /* Expect 'q'. If no 'q', continue in best effort */
12157 if (*al != 'q')
12158 goto process_value;
12159 al++;
12160
12161 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12162 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12163 al++;
12164 if (al >= end)
12165 goto process_value;
12166
12167 /* Expect '='. If no '=', continue in best effort */
12168 if (*al != '=')
12169 goto process_value;
12170 al++;
12171
12172 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12173 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12174 al++;
12175 if (al >= end)
12176 goto process_value;
12177
12178 /* Parse the q value. */
12179 qvalue = parse_qvalue(al, &al);
12180
12181process_value:
12182
12183 /* If the new q value is the best q value, then store the associated
12184 * language in the response. If qvalue is the biggest value (1000),
12185 * break the process.
12186 */
12187 if (qvalue > best_q) {
12188 smp->data.str.str = (char *)w;
12189 smp->data.str.len = str - w;
12190 if (qvalue >= 1000)
12191 break;
12192 best_q = qvalue;
12193 }
12194
12195expect_comma:
12196
12197 /* Expect comma or end. If the end is detected, quit the loop. */
12198 while (al < end && *al != ',')
12199 al++;
12200 if (al >= end)
12201 break;
12202
12203 /* Comma is found, jump it and restart the analyzer. */
12204 al++;
12205 }
12206
12207 /* Set default value if required. */
12208 if (smp->data.str.len == 0 && args[1].type == ARGT_STR) {
12209 smp->data.str.str = args[1].data.str.str;
12210 smp->data.str.len = args[1].data.str.len;
12211 }
12212
12213 /* Return true only if a matching language was found. */
12214 return smp->data.str.len != 0;
12215}
12216
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12217/* This fetch url-decode any input string. */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12218static int sample_conv_url_dec(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12219{
12220 /* If the constant flag is set or if not size is avalaible at
12221 * the end of the buffer, copy the string in other buffer
12222 * before decoding.
12223 */
12224 if (smp->flags & SMP_F_CONST || smp->data.str.size <= smp->data.str.len) {
12225 struct chunk *str = get_trash_chunk();
12226 memcpy(str->str, smp->data.str.str, smp->data.str.len);
12227 smp->data.str.str = str->str;
12228 smp->data.str.size = str->size;
12229 smp->flags &= ~SMP_F_CONST;
12230 }
12231
12232 /* Add final \0 required by url_decode(), and convert the input string. */
12233 smp->data.str.str[smp->data.str.len] = '\0';
12234 smp->data.str.len = url_decode(smp->data.str.str);
12235 return 1;
12236}
12237
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12238static int smp_conv_req_capture(const struct arg *args, struct sample *smp, void *private)
12239{
12240 struct proxy *fe = strm_fe(smp->strm);
12241 int idx, i;
12242 struct cap_hdr *hdr;
12243 int len;
12244
12245 if (!args || args->type != ARGT_UINT)
12246 return 0;
12247
12248 idx = args->data.uint;
12249
12250 /* Check the availibity of the capture id. */
12251 if (idx > fe->nb_req_cap - 1)
12252 return 0;
12253
12254 /* Look for the original configuration. */
12255 for (hdr = fe->req_cap, i = fe->nb_req_cap - 1;
12256 hdr != NULL && i != idx ;
12257 i--, hdr = hdr->next);
12258 if (!hdr)
12259 return 0;
12260
12261 /* check for the memory allocation */
12262 if (smp->strm->req_cap[hdr->index] == NULL)
12263 smp->strm->req_cap[hdr->index] = pool_alloc2(hdr->pool);
12264 if (smp->strm->req_cap[hdr->index] == NULL)
12265 return 0;
12266
12267 /* Check length. */
12268 len = smp->data.str.len;
12269 if (len > hdr->len)
12270 len = hdr->len;
12271
12272 /* Capture input data. */
12273 memcpy(smp->strm->req_cap[idx], smp->data.str.str, len);
12274 smp->strm->req_cap[idx][len] = '\0';
12275
12276 return 1;
12277}
12278
12279static int smp_conv_res_capture(const struct arg *args, struct sample *smp, void *private)
12280{
12281 struct proxy *fe = strm_fe(smp->strm);
12282 int idx, i;
12283 struct cap_hdr *hdr;
12284 int len;
12285
12286 if (!args || args->type != ARGT_UINT)
12287 return 0;
12288
12289 idx = args->data.uint;
12290
12291 /* Check the availibity of the capture id. */
12292 if (idx > fe->nb_rsp_cap - 1)
12293 return 0;
12294
12295 /* Look for the original configuration. */
12296 for (hdr = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
12297 hdr != NULL && i != idx ;
12298 i--, hdr = hdr->next);
12299 if (!hdr)
12300 return 0;
12301
12302 /* check for the memory allocation */
12303 if (smp->strm->res_cap[hdr->index] == NULL)
12304 smp->strm->res_cap[hdr->index] = pool_alloc2(hdr->pool);
12305 if (smp->strm->res_cap[hdr->index] == NULL)
12306 return 0;
12307
12308 /* Check length. */
12309 len = smp->data.str.len;
12310 if (len > hdr->len)
12311 len = hdr->len;
12312
12313 /* Capture input data. */
12314 memcpy(smp->strm->res_cap[idx], smp->data.str.str, len);
12315 smp->strm->res_cap[idx][len] = '\0';
12316
12317 return 1;
12318}
12319
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12320/* This function executes one of the set-{method,path,query,uri} actions. It
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12321 * takes the string from the variable 'replace' with length 'len', then modifies
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12322 * the relevant part of the request line accordingly. Then it updates various
12323 * pointers to the next elements which were moved, and the total buffer length.
12324 * It finds the action to be performed in p[2], previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12325 * parse_set_req_line(). It returns 0 in case of success, -1 in case of internal
12326 * error, though this can be revisited when this code is finally exploited.
12327 *
12328 * 'action' can be '0' to replace method, '1' to replace path, '2' to replace
12329 * query string and 3 to replace uri.
12330 *
12331 * In query string case, the mark question '?' must be set at the start of the
12332 * string by the caller, event if the replacement query string is empty.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12333 */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12334int http_replace_req_line(int action, const char *replace, int len,
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12335 struct proxy *px, struct stream *s)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12336{
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12337 struct http_txn *txn = s->txn;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12338 char *cur_ptr, *cur_end;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12339 int offset = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12340 int delta;
12341
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12342 switch (action) {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12343 case 0: // method
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12344 cur_ptr = s->req.buf->p;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12345 cur_end = cur_ptr + txn->req.sl.rq.m_l;
12346
12347 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12348 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12349 txn->req.sl.rq.m_l += delta;
12350 txn->req.sl.rq.u += delta;
12351 txn->req.sl.rq.v += delta;
12352 break;
12353
12354 case 1: // path
12355 cur_ptr = http_get_path(txn);
12356 if (!cur_ptr)
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12357 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12358
12359 cur_end = cur_ptr;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12360 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]12361 cur_end++;
12362
12363 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12364 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12365 txn->req.sl.rq.u_l += delta;
12366 txn->req.sl.rq.v += delta;
12367 break;
12368
12369 case 2: // query
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12370 offset = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12371 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12372 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12373 while (cur_ptr < cur_end && *cur_ptr != '?')
12374 cur_ptr++;
12375
12376 /* skip the question mark or indicate that we must insert it
12377 * (but only if the format string is not empty then).
12378 */
12379 if (cur_ptr < cur_end)
12380 cur_ptr++;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12381 else if (len > 1)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12382 offset = 0;
12383
12384 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12385 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12386 txn->req.sl.rq.u_l += delta;
12387 txn->req.sl.rq.v += delta;
12388 break;
12389
12390 case 3: // uri
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12391 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12392 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12393
12394 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12395 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12396 txn->req.sl.rq.u_l += delta;
12397 txn->req.sl.rq.v += delta;
12398 break;
12399
12400 default:
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12401 return -1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12402 }
12403
12404 /* commit changes and adjust end of message */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12405 delta = buffer_replace2(s->req.buf, cur_ptr, cur_end, replace + offset, len - offset);
Thierry FOURNIER7f6192c2015-04-26 18:01:40 +0200[diff] [blame]12406 txn->req.sl.rq.l += delta;
12407 txn->hdr_idx.v[0].len += delta;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12408 http_msg_move_end(&txn->req, delta);
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12409 return 0;
12410}
12411
12412/* This function executes one of the set-{method,path,query,uri} actions. It
12413 * builds a string in the trash from the specified format string. It finds
12414 * the action to be performed in p[2], previously filled by function
12415 * parse_set_req_line(). The replacement action is excuted by the function
12416 * http_action_set_req_line_exec(). It always returns 1. If an error occurs
12417 * the action is canceled, but the rule processing continue.
12418 */
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12419int 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]12420{
12421 chunk_reset(&trash);
12422
12423 /* If we have to create a query string, prepare a '?'. */
12424 if (*(int *)&rule->arg.act.p[2] == 2)
12425 trash.str[trash.len++] = '?';
12426 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, (struct list *)&rule->arg.act.p[0]);
12427
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12428 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]12429 return 1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12430}
12431
12432/* parse an http-request action among :
12433 * set-method
12434 * set-path
12435 * set-query
12436 * set-uri
12437 *
12438 * All of them accept a single argument of type string representing a log-format.
12439 * The resulting rule makes use of arg->act.p[0..1] to store the log-format list
12440 * head, and p[2] to store the action as an int (0=method, 1=path, 2=query, 3=uri).
12441 * It returns 0 on success, < 0 on error.
12442 */
12443int parse_set_req_line(const char **args, int *orig_arg, struct proxy *px, struct http_req_rule *rule, char **err)
12444{
12445 int cur_arg = *orig_arg;
12446
12447 rule->action = HTTP_REQ_ACT_CUSTOM_CONT;
12448
12449 switch (args[0][4]) {
12450 case 'm' :
12451 *(int *)&rule->arg.act.p[2] = 0;
12452 rule->action_ptr = http_action_set_req_line;
12453 break;
12454 case 'p' :
12455 *(int *)&rule->arg.act.p[2] = 1;
12456 rule->action_ptr = http_action_set_req_line;
12457 break;
12458 case 'q' :
12459 *(int *)&rule->arg.act.p[2] = 2;
12460 rule->action_ptr = http_action_set_req_line;
12461 break;
12462 case 'u' :
12463 *(int *)&rule->arg.act.p[2] = 3;
12464 rule->action_ptr = http_action_set_req_line;
12465 break;
12466 default:
12467 memprintf(err, "internal error: unhandled action '%s'", args[0]);
12468 return -1;
12469 }
12470
12471 if (!*args[cur_arg] ||
12472 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
12473 memprintf(err, "expects exactly 1 argument <format>");
12474 return -1;
12475 }
12476
12477 LIST_INIT((struct list *)&rule->arg.act.p[0]);
12478 proxy->conf.args.ctx = ARGC_HRQ;
12479 parse_logformat_string(args[cur_arg], proxy, (struct list *)&rule->arg.act.p[0], LOG_OPT_HTTP,
12480 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
12481 proxy->conf.args.file, proxy->conf.args.line);
12482
12483 (*orig_arg)++;
12484 return 0;
12485}
12486
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12487/* This function executes the "capture" action. It executes a fetch expression,
12488 * turns the result into a string and puts it in a capture slot. It always
12489 * returns 1. If an error occurs the action is cancelled, but the rule
12490 * processing continues.
12491 */
12492int http_action_req_capture(struct http_req_rule *rule, struct proxy *px, struct stream *s)
12493{
12494 struct session *sess = s->sess;
12495 struct sample *key;
12496 struct sample_expr *expr = rule->arg.act.p[0];
12497 struct cap_hdr *h = rule->arg.act.p[1];
12498 char **cap = s->req_cap;
12499 int len;
12500
12501 key = sample_fetch_string(s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL, expr);
12502 if (!key)
12503 return 1;
12504
12505 if (cap[h->index] == NULL)
12506 cap[h->index] = pool_alloc2(h->pool);
12507
12508 if (cap[h->index] == NULL) /* no more capture memory */
12509 return 1;
12510
12511 len = key->data.str.len;
12512 if (len > h->len)
12513 len = h->len;
12514
12515 memcpy(cap[h->index], key->data.str.str, len);
12516 cap[h->index][len] = 0;
12517 return 1;
12518}
12519
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12520/* This function executes the "capture" action and store the result in a
12521 * capture slot if exists. It executes a fetch expression, turns the result
12522 * into a string and puts it in a capture slot. It always returns 1. If an
12523 * error occurs the action is cancelled, but the rule processing continues.
12524 */
12525int http_action_req_capture_by_id(struct http_req_rule *rule, struct proxy *px, struct stream *s)
12526{
12527 struct session *sess = s->sess;
12528 struct sample *key;
12529 struct sample_expr *expr = rule->arg.act.p[0];
12530 struct cap_hdr *h;
12531 int idx = (long)rule->arg.act.p[1];
12532 char **cap = s->req_cap;
12533 struct proxy *fe = strm_fe(s);
12534 int len;
12535 int i;
12536
12537 /* Look for the original configuration. */
12538 for (h = fe->req_cap, i = fe->nb_req_cap - 1;
12539 h != NULL && i != idx ;
12540 i--, h = h->next);
12541 if (!h)
12542 return 1;
12543
12544 key = sample_fetch_string(s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL, expr);
12545 if (!key)
12546 return 1;
12547
12548 if (cap[h->index] == NULL)
12549 cap[h->index] = pool_alloc2(h->pool);
12550
12551 if (cap[h->index] == NULL) /* no more capture memory */
12552 return 1;
12553
12554 len = key->data.str.len;
12555 if (len > h->len)
12556 len = h->len;
12557
12558 memcpy(cap[h->index], key->data.str.str, len);
12559 cap[h->index][len] = 0;
12560 return 1;
12561}
12562
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12563/* parse an "http-request capture" action. It takes a single argument which is
12564 * a sample fetch expression. It stores the expression into arg->act.p[0] and
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12565 * the allocated hdr_cap struct or the preallocated "id" into arg->act.p[1].
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12566 * It returns 0 on success, < 0 on error.
12567 */
12568int parse_http_req_capture(const char **args, int *orig_arg, struct proxy *px, struct http_req_rule *rule, char **err)
12569{
12570 struct sample_expr *expr;
12571 struct cap_hdr *hdr;
12572 int cur_arg;
Willy Tarreau3986ac12015-05-08 16:13:42 +0200[diff] [blame]12573 int len = 0;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12574
12575 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12576 if (strcmp(args[cur_arg], "if") == 0 ||
12577 strcmp(args[cur_arg], "unless") == 0)
12578 break;
12579
12580 if (cur_arg < *orig_arg + 3) {
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12581 memprintf(err, "expects <expression> [ 'len' <length> | id <idx> ]");
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12582 return -1;
12583 }
12584
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12585 cur_arg = *orig_arg;
12586 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12587 if (!expr)
12588 return -1;
12589
12590 if (!(expr->fetch->val & SMP_VAL_FE_HRQ_HDR)) {
12591 memprintf(err,
12592 "fetch method '%s' extracts information from '%s', none of which is available here",
12593 args[cur_arg-1], sample_src_names(expr->fetch->use));
12594 free(expr);
12595 return -1;
12596 }
12597
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12598 if (!args[cur_arg] || !*args[cur_arg]) {
12599 memprintf(err, "expects 'len or 'id'");
12600 free(expr);
12601 return -1;
12602 }
12603
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12604 if (strcmp(args[cur_arg], "len") == 0) {
12605 cur_arg++;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12606
12607 if (!(px->cap & PR_CAP_FE)) {
12608 memprintf(err, "proxy '%s' has no frontend capability", px->id);
12609 return -1;
12610 }
12611
12612 proxy->conf.args.ctx = ARGC_CAP;
12613
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12614 if (!args[cur_arg]) {
12615 memprintf(err, "missing length value");
12616 free(expr);
12617 return -1;
12618 }
12619 /* we copy the table name for now, it will be resolved later */
12620 len = atoi(args[cur_arg]);
12621 if (len <= 0) {
12622 memprintf(err, "length must be > 0");
12623 free(expr);
12624 return -1;
12625 }
12626 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12627
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12628 if (!len) {
12629 memprintf(err, "a positive 'len' argument is mandatory");
12630 free(expr);
12631 return -1;
12632 }
12633
12634 hdr = calloc(sizeof(struct cap_hdr), 1);
12635 hdr->next = px->req_cap;
12636 hdr->name = NULL; /* not a header capture */
12637 hdr->namelen = 0;
12638 hdr->len = len;
12639 hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
12640 hdr->index = px->nb_req_cap++;
12641
12642 px->req_cap = hdr;
12643 px->to_log |= LW_REQHDR;
12644
12645 rule->action = HTTP_REQ_ACT_CUSTOM_CONT;
12646 rule->action_ptr = http_action_req_capture;
12647 rule->arg.act.p[0] = expr;
12648 rule->arg.act.p[1] = hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12649 }
12650
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12651 else if (strcmp(args[cur_arg], "id") == 0) {
12652 int id;
12653 char *error;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12654
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12655 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12656
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12657 if (!args[cur_arg]) {
12658 memprintf(err, "missing id value");
12659 free(expr);
12660 return -1;
12661 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12662
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12663 id = strtol(args[cur_arg], &error, 10);
12664 if (*error != '\0') {
12665 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12666 free(expr);
12667 return -1;
12668 }
12669 cur_arg++;
12670
12671 proxy->conf.args.ctx = ARGC_CAP;
12672
12673 rule->action = HTTP_REQ_ACT_CUSTOM_CONT;
12674 rule->action_ptr = http_action_req_capture_by_id;
12675 rule->arg.act.p[0] = expr;
12676 rule->arg.act.p[1] = (void *)(long)id;
12677 }
12678
12679 else {
12680 memprintf(err, "expects 'len' or 'id', found '%s'", args[cur_arg]);
12681 free(expr);
12682 return -1;
12683 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12684
12685 *orig_arg = cur_arg;
12686 return 0;
12687}
12688
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12689/* This function executes the "capture" action and store the result in a
12690 * capture slot if exists. It executes a fetch expression, turns the result
12691 * into a string and puts it in a capture slot. It always returns 1. If an
12692 * error occurs the action is cancelled, but the rule processing continues.
12693 */
12694int http_action_res_capture_by_id(struct http_res_rule *rule, struct proxy *px, struct stream *s)
12695{
12696 struct session *sess = s->sess;
12697 struct sample *key;
12698 struct sample_expr *expr = rule->arg.act.p[0];
12699 struct cap_hdr *h;
12700 int idx = (long)rule->arg.act.p[1];
12701 char **cap = s->res_cap;
12702 struct proxy *fe = strm_fe(s);
12703 int len;
12704 int i;
12705
12706 /* Look for the original configuration. */
12707 for (h = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
12708 h != NULL && i != idx ;
12709 i--, h = h->next);
12710 if (!h)
12711 return 1;
12712
12713 key = sample_fetch_string(s->be, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL, expr);
12714 if (!key)
12715 return 1;
12716
12717 if (cap[h->index] == NULL)
12718 cap[h->index] = pool_alloc2(h->pool);
12719
12720 if (cap[h->index] == NULL) /* no more capture memory */
12721 return 1;
12722
12723 len = key->data.str.len;
12724 if (len > h->len)
12725 len = h->len;
12726
12727 memcpy(cap[h->index], key->data.str.str, len);
12728 cap[h->index][len] = 0;
12729 return 1;
12730}
12731
12732/* parse an "http-response capture" action. It takes a single argument which is
12733 * a sample fetch expression. It stores the expression into arg->act.p[0] and
12734 * the allocated hdr_cap struct od the preallocated id into arg->act.p[1].
12735 * It returns 0 on success, < 0 on error.
12736 */
12737int parse_http_res_capture(const char **args, int *orig_arg, struct proxy *px, struct http_res_rule *rule, char **err)
12738{
12739 struct sample_expr *expr;
12740 int cur_arg;
12741 int id;
12742 char *error;
12743
12744 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12745 if (strcmp(args[cur_arg], "if") == 0 ||
12746 strcmp(args[cur_arg], "unless") == 0)
12747 break;
12748
12749 if (cur_arg < *orig_arg + 3) {
12750 memprintf(err, "expects <expression> [ 'len' <length> | id <idx> ]");
12751 return -1;
12752 }
12753
12754 cur_arg = *orig_arg;
12755 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12756 if (!expr)
12757 return -1;
12758
12759 if (!(expr->fetch->val & SMP_VAL_FE_HRS_HDR)) {
12760 memprintf(err,
12761 "fetch method '%s' extracts information from '%s', none of which is available here",
12762 args[cur_arg-1], sample_src_names(expr->fetch->use));
12763 free(expr);
12764 return -1;
12765 }
12766
12767 if (!args[cur_arg] || !*args[cur_arg]) {
12768 memprintf(err, "expects 'len or 'id'");
12769 free(expr);
12770 return -1;
12771 }
12772
12773 if (strcmp(args[cur_arg], "id") != 0) {
12774 memprintf(err, "expects 'id', found '%s'", args[cur_arg]);
12775 free(expr);
12776 return -1;
12777 }
12778
12779 cur_arg++;
12780
12781 if (!args[cur_arg]) {
12782 memprintf(err, "missing id value");
12783 free(expr);
12784 return -1;
12785 }
12786
12787 id = strtol(args[cur_arg], &error, 10);
12788 if (*error != '\0') {
12789 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12790 free(expr);
12791 return -1;
12792 }
12793 cur_arg++;
12794
12795 LIST_INIT((struct list *)&rule->arg.act.p[0]);
12796 proxy->conf.args.ctx = ARGC_CAP;
12797
12798 rule->action = HTTP_RES_ACT_CUSTOM_CONT;
12799 rule->action_ptr = http_action_res_capture_by_id;
12800 rule->arg.act.p[0] = expr;
12801 rule->arg.act.p[1] = (void *)(long)id;
12802
12803 *orig_arg = cur_arg;
12804 return 0;
12805}
12806
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12807/*
12808 * Return the struct http_req_action_kw associated to a keyword.
12809 */
12810struct http_req_action_kw *action_http_req_custom(const char *kw)
12811{
12812 if (!LIST_ISEMPTY(&http_req_keywords.list)) {
12813 struct http_req_action_kw_list *kw_list;
12814 int i;
12815
12816 list_for_each_entry(kw_list, &http_req_keywords.list, list) {
12817 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
Thierry FOURNIER0e118632015-06-04 11:44:06 +0200[diff] [blame]12818 if (kw_list->kw[i].match_pfx &&
12819 strncmp(kw, kw_list->kw[i].kw, strlen(kw_list->kw[i].kw)) == 0)
12820 return &kw_list->kw[i];
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12821 if (!strcmp(kw, kw_list->kw[i].kw))
12822 return &kw_list->kw[i];
12823 }
12824 }
12825 }
12826 return NULL;
12827}
12828
12829/*
12830 * Return the struct http_res_action_kw associated to a keyword.
12831 */
12832struct http_res_action_kw *action_http_res_custom(const char *kw)
12833{
12834 if (!LIST_ISEMPTY(&http_res_keywords.list)) {
12835 struct http_res_action_kw_list *kw_list;
12836 int i;
12837
12838 list_for_each_entry(kw_list, &http_res_keywords.list, list) {
12839 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
Thierry FOURNIER0e118632015-06-04 11:44:06 +0200[diff] [blame]12840 if (kw_list->kw[i].match_pfx &&
12841 strncmp(kw, kw_list->kw[i].kw, strlen(kw_list->kw[i].kw)) == 0)
12842 return &kw_list->kw[i];
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12843 if (!strcmp(kw, kw_list->kw[i].kw))
12844 return &kw_list->kw[i];
12845 }
12846 }
12847 }
12848 return NULL;
12849}
12850
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12851/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12852/* All supported ACL keywords must be declared here. */
12853/************************************************************************/
12854
12855/* Note: must not be declared <const> as its list will be overwritten.
12856 * Please take care of keeping this list alphabetically sorted.
12857 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]12858static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12859 { "base", "base", PAT_MATCH_STR },
12860 { "base_beg", "base", PAT_MATCH_BEG },
12861 { "base_dir", "base", PAT_MATCH_DIR },
12862 { "base_dom", "base", PAT_MATCH_DOM },
12863 { "base_end", "base", PAT_MATCH_END },
12864 { "base_len", "base", PAT_MATCH_LEN },
12865 { "base_reg", "base", PAT_MATCH_REG },
12866 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]12867
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12868 { "cook", "req.cook", PAT_MATCH_STR },
12869 { "cook_beg", "req.cook", PAT_MATCH_BEG },
12870 { "cook_dir", "req.cook", PAT_MATCH_DIR },
12871 { "cook_dom", "req.cook", PAT_MATCH_DOM },
12872 { "cook_end", "req.cook", PAT_MATCH_END },
12873 { "cook_len", "req.cook", PAT_MATCH_LEN },
12874 { "cook_reg", "req.cook", PAT_MATCH_REG },
12875 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12876
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12877 { "hdr", "req.hdr", PAT_MATCH_STR },
12878 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
12879 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
12880 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
12881 { "hdr_end", "req.hdr", PAT_MATCH_END },
12882 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
12883 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
12884 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12885
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12886 /* these two declarations uses strings with list storage (in place
12887 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
12888 * and delete functions are relative to the list management. The parse
12889 * and match method are related to the corresponding fetch methods. This
12890 * is very particular ACL declaration mode.
12891 */
12892 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
12893 { "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]12894
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12895 { "path", "path", PAT_MATCH_STR },
12896 { "path_beg", "path", PAT_MATCH_BEG },
12897 { "path_dir", "path", PAT_MATCH_DIR },
12898 { "path_dom", "path", PAT_MATCH_DOM },
12899 { "path_end", "path", PAT_MATCH_END },
12900 { "path_len", "path", PAT_MATCH_LEN },
12901 { "path_reg", "path", PAT_MATCH_REG },
12902 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12903
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12904 { "req_ver", "req.ver", PAT_MATCH_STR },
12905 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12906
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12907 { "scook", "res.cook", PAT_MATCH_STR },
12908 { "scook_beg", "res.cook", PAT_MATCH_BEG },
12909 { "scook_dir", "res.cook", PAT_MATCH_DIR },
12910 { "scook_dom", "res.cook", PAT_MATCH_DOM },
12911 { "scook_end", "res.cook", PAT_MATCH_END },
12912 { "scook_len", "res.cook", PAT_MATCH_LEN },
12913 { "scook_reg", "res.cook", PAT_MATCH_REG },
12914 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12915
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12916 { "shdr", "res.hdr", PAT_MATCH_STR },
12917 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
12918 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
12919 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
12920 { "shdr_end", "res.hdr", PAT_MATCH_END },
12921 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
12922 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
12923 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12924
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12925 { "url", "url", PAT_MATCH_STR },
12926 { "url_beg", "url", PAT_MATCH_BEG },
12927 { "url_dir", "url", PAT_MATCH_DIR },
12928 { "url_dom", "url", PAT_MATCH_DOM },
12929 { "url_end", "url", PAT_MATCH_END },
12930 { "url_len", "url", PAT_MATCH_LEN },
12931 { "url_reg", "url", PAT_MATCH_REG },
12932 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12933
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12934 { "urlp", "urlp", PAT_MATCH_STR },
12935 { "urlp_beg", "urlp", PAT_MATCH_BEG },
12936 { "urlp_dir", "urlp", PAT_MATCH_DIR },
12937 { "urlp_dom", "urlp", PAT_MATCH_DOM },
12938 { "urlp_end", "urlp", PAT_MATCH_END },
12939 { "urlp_len", "urlp", PAT_MATCH_LEN },
12940 { "urlp_reg", "urlp", PAT_MATCH_REG },
12941 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12942
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]12943 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12944}};
12945
12946/************************************************************************/
12947/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12948/************************************************************************/
12949/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]12950static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12951 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12952 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
12953 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
12954
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]12955 /* capture are allocated and are permanent in the stream */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12956 { "capture.req.hdr", smp_fetch_capture_header_req, ARG1(1, UINT), NULL, SMP_T_STR, SMP_USE_HRQHP },
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]12957
12958 /* retrieve these captures from the HTTP logs */
12959 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12960 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12961 { "capture.req.ver", smp_fetch_capture_req_ver, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12962
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12963 { "capture.res.hdr", smp_fetch_capture_header_res, ARG1(1, UINT), NULL, SMP_T_STR, SMP_USE_HRSHP },
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]12964 { "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]12965
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12966 /* cookie is valid in both directions (eg: for "stick ...") but cook*
12967 * are only here to match the ACL's name, are request-only and are used
12968 * for ACL compatibility only.
12969 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12970 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
12971 { "cookie", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV|SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12972 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
12973 { "cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
12974
12975 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
12976 * only here to match the ACL's name, are request-only and are used for
12977 * ACL compatibility only.
12978 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12979 { "hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRQHV|SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12980 { "hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
12981 { "hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
12982 { "hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
12983
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]12984 { "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]12985 { "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]12986 { "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]12987 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12988 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]12989 { "query", smp_fetch_query, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12990
12991 /* HTTP protocol on the request path */
12992 { "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]12993 { "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]12994
12995 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12996 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
12997 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12998
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]12999 { "req.body", smp_fetch_body, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
13000 { "req.body_len", smp_fetch_body_len, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
13001 { "req.body_size", smp_fetch_body_size, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]13002 { "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]13003
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13004 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13005 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
13006 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13007
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13008 /* 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]13009 { "req.cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13010 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
13011 { "req.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
13012
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13013 { "req.fhdr", smp_fetch_fhdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]13014 { "req.fhdr_cnt", smp_fetch_fhdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13015 { "req.hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13016 { "req.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
13017 { "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]13018 { "req.hdr_names", smp_fetch_hdr_names, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13019 { "req.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
13020
13021 /* 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]13022 { "res.cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13023 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
13024 { "res.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
13025
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13026 { "res.fhdr", smp_fetch_fhdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]13027 { "res.fhdr_cnt", smp_fetch_fhdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13028 { "res.hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13029 { "res.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
13030 { "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]13031 { "res.hdr_names", smp_fetch_hdr_names, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]13032 { "res.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
13033
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13034 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13035 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13036 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
13037 { "scook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13038 { "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]13039
13040 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13041 { "shdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13042 { "shdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
13043 { "shdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
13044 { "shdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
13045
13046 { "status", smp_fetch_stcode, 0, NULL, SMP_T_UINT, SMP_USE_HRSHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13047 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]13048 { "url32", smp_fetch_url32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
13049 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13050 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
13051 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]13052 { "url_param", smp_fetch_url_param, ARG2(0,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
13053 { "urlp" , smp_fetch_url_param, ARG2(0,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
13054 { "urlp_val", smp_fetch_url_param_val, ARG2(0,STR,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13055 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]13056}};
13057
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13058
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13059/************************************************************************/
13060/* All supported converter keywords must be declared here. */
13061/************************************************************************/
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13062/* Note: must not be declared <const> as its list will be overwritten */
13063static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]13064 { "http_date", sample_conv_http_date, ARG1(0,SINT), NULL, SMP_T_UINT, SMP_T_STR},
13065 { "language", sample_conv_q_prefered, ARG2(1,STR,STR), NULL, SMP_T_STR, SMP_T_STR},
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]13066 { "capture-req", smp_conv_req_capture, ARG1(1,UINT), NULL, SMP_T_STR, SMP_T_STR},
13067 { "capture-res", smp_conv_res_capture, ARG1(1,UINT), NULL, SMP_T_STR, SMP_T_STR},
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]13068 { "url_dec", sample_conv_url_dec, 0, NULL, SMP_T_STR, SMP_T_STR},
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13069 { NULL, NULL, 0, 0, 0 },
13070}};
13071
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]13072
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13073/************************************************************************/
13074/* All supported http-request action keywords must be declared here. */
13075/************************************************************************/
13076struct http_req_action_kw_list http_req_actions = {
13077 .scope = "http",
13078 .kw = {
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]13079 { "capture", parse_http_req_capture },
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13080 { "set-method", parse_set_req_line },
13081 { "set-path", parse_set_req_line },
13082 { "set-query", parse_set_req_line },
13083 { "set-uri", parse_set_req_line },
Willy Tarreaucb703b02015-04-03 09:52:01 +0200[diff] [blame]13084 { NULL, NULL }
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13085 }
13086};
13087
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13088struct http_res_action_kw_list http_res_actions = {
13089 .scope = "http",
13090 .kw = {
13091 { "capture", parse_http_res_capture },
13092 { NULL, NULL }
13093 }
13094};
13095
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13096__attribute__((constructor))
13097static void __http_protocol_init(void)
13098{
13099 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]13100 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13101 sample_register_convs(&sample_conv_kws);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13102 http_req_keywords_register(&http_req_actions);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13103 http_res_keywords_register(&http_res_actions);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13104}
13105
13106
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]13107/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]13108 * Local variables:
13109 * c-indent-level: 8
13110 * c-basic-offset: 8
13111 * End:
13112 */