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git01.mediatek.com / haproxy / 24ff6c6fce1a2b367fda9ff79f249220d5152c79 / . / src / proto_http.c
blob: ce43ec5991ec81e08b2b4d9c8d009ed7e0cefe5a [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1/*
2 * HTTP protocol analyzer
3 *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4 * Copyright 2000-2011 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <ctype.h>
14#include <errno.h>
15#include <fcntl.h>
16#include <stdio.h>
17#include <stdlib.h>
18#include <string.h>
19#include <syslog.h>
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]20#include <time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]21
22#include <sys/socket.h>
23#include <sys/stat.h>
24#include <sys/types.h>
25
Willy Tarreaub05405a2012-01-23 15:35:52 +0100[diff] [blame]26#include <netinet/tcp.h>
27
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]28#include <common/base64.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]29#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]30#include <common/compat.h>
31#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +0100[diff] [blame]32#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]33#include <common/memory.h>
34#include <common/mini-clist.h>
35#include <common/standard.h>
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]36#include <common/ticks.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]37#include <common/time.h>
38#include <common/uri_auth.h>
39#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]40
41#include <types/capture.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]42#include <types/global.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]43
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]44#include <proto/acl.h>
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]45#include <proto/arg.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]46#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]47#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]48#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]49#include <proto/checks.h>
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]50#include <proto/compression.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]51#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]52#include <proto/fd.h>
Willy Tarreau03fa5df2010-05-24 21:02:37 +0200[diff] [blame]53#include <proto/frontend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]54#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]55#include <proto/hdr_idx.h>
Thierry FOURNIERed66c292013-11-28 11:05:19 +0100[diff] [blame]56#include <proto/pattern.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]57#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]58#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]59#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]60#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]61#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]62#include <proto/server.h>
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]63#include <proto/stream.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]64#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]65#include <proto/task.h>
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]66#include <proto/pattern.h>
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]67#include <proto/vars.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]68
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]69const char HTTP_100[] =
70 "HTTP/1.1 100 Continue\r\n\r\n";
71
72const struct chunk http_100_chunk = {
73 .str = (char *)&HTTP_100,
74 .len = sizeof(HTTP_100)-1
75};
76
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]77/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]78const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]79 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]80 "Content-length: 0\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]81 "Location: "; /* not terminated since it will be concatenated with the URL */
82
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]83const char *HTTP_302 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]84 "HTTP/1.1 302 Found\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]85 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]86 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]87 "Location: "; /* not terminated since it will be concatenated with the URL */
88
89/* same as 302 except that the browser MUST retry with the GET method */
90const char *HTTP_303 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]91 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]92 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]93 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]94 "Location: "; /* not terminated since it will be concatenated with the URL */
95
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]96
97/* same as 302 except that the browser MUST retry with the same method */
98const char *HTTP_307 =
99 "HTTP/1.1 307 Temporary Redirect\r\n"
100 "Cache-Control: no-cache\r\n"
101 "Content-length: 0\r\n"
102 "Location: "; /* not terminated since it will be concatenated with the URL */
103
104/* same as 301 except that the browser MUST retry with the same method */
105const char *HTTP_308 =
106 "HTTP/1.1 308 Permanent Redirect\r\n"
107 "Content-length: 0\r\n"
108 "Location: "; /* not terminated since it will be concatenated with the URL */
109
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]110/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
111const char *HTTP_401_fmt =
112 "HTTP/1.0 401 Unauthorized\r\n"
113 "Cache-Control: no-cache\r\n"
114 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]115 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]116 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
117 "\r\n"
118 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
119
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]120const char *HTTP_407_fmt =
121 "HTTP/1.0 407 Unauthorized\r\n"
122 "Cache-Control: no-cache\r\n"
123 "Connection: close\r\n"
124 "Content-Type: text/html\r\n"
125 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
126 "\r\n"
Godbach1f1fae62014-12-17 16:32:05 +0800[diff] [blame]127 "<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]128
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]129
130const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]131 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]132 [HTTP_ERR_400] = 400,
133 [HTTP_ERR_403] = 403,
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]134 [HTTP_ERR_405] = 405,
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]135 [HTTP_ERR_408] = 408,
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]136 [HTTP_ERR_429] = 429,
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]137 [HTTP_ERR_500] = 500,
138 [HTTP_ERR_502] = 502,
139 [HTTP_ERR_503] = 503,
140 [HTTP_ERR_504] = 504,
141};
142
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]143static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]144 [HTTP_ERR_200] =
145 "HTTP/1.0 200 OK\r\n"
146 "Cache-Control: no-cache\r\n"
147 "Connection: close\r\n"
148 "Content-Type: text/html\r\n"
149 "\r\n"
150 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
151
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]152 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]153 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]154 "Cache-Control: no-cache\r\n"
155 "Connection: close\r\n"
156 "Content-Type: text/html\r\n"
157 "\r\n"
158 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
159
160 [HTTP_ERR_403] =
161 "HTTP/1.0 403 Forbidden\r\n"
162 "Cache-Control: no-cache\r\n"
163 "Connection: close\r\n"
164 "Content-Type: text/html\r\n"
165 "\r\n"
166 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
167
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]168 [HTTP_ERR_405] =
169 "HTTP/1.0 405 Method Not Allowed\r\n"
170 "Cache-Control: no-cache\r\n"
171 "Connection: close\r\n"
172 "Content-Type: text/html\r\n"
173 "\r\n"
174 "<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",
175
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]176 [HTTP_ERR_408] =
177 "HTTP/1.0 408 Request Time-out\r\n"
178 "Cache-Control: no-cache\r\n"
179 "Connection: close\r\n"
180 "Content-Type: text/html\r\n"
181 "\r\n"
182 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
183
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]184 [HTTP_ERR_429] =
185 "HTTP/1.0 429 Too Many Requests\r\n"
186 "Cache-Control: no-cache\r\n"
187 "Connection: close\r\n"
188 "Content-Type: text/html\r\n"
189 "\r\n"
190 "<html><body><h1>429 Too Many Requests</h1>\nYou have sent too many requests in a given amount of time.\n</body></html>\n",
191
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]192 [HTTP_ERR_500] =
193 "HTTP/1.0 500 Server Error\r\n"
194 "Cache-Control: no-cache\r\n"
195 "Connection: close\r\n"
196 "Content-Type: text/html\r\n"
197 "\r\n"
198 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
199
200 [HTTP_ERR_502] =
201 "HTTP/1.0 502 Bad Gateway\r\n"
202 "Cache-Control: no-cache\r\n"
203 "Connection: close\r\n"
204 "Content-Type: text/html\r\n"
205 "\r\n"
206 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
207
208 [HTTP_ERR_503] =
209 "HTTP/1.0 503 Service Unavailable\r\n"
210 "Cache-Control: no-cache\r\n"
211 "Connection: close\r\n"
212 "Content-Type: text/html\r\n"
213 "\r\n"
214 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
215
216 [HTTP_ERR_504] =
217 "HTTP/1.0 504 Gateway Time-out\r\n"
218 "Cache-Control: no-cache\r\n"
219 "Connection: close\r\n"
220 "Content-Type: text/html\r\n"
221 "\r\n"
222 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
223
224};
225
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]226/* status codes available for the stats admin page (strictly 4 chars length) */
227const char *stat_status_codes[STAT_STATUS_SIZE] = {
228 [STAT_STATUS_DENY] = "DENY",
229 [STAT_STATUS_DONE] = "DONE",
230 [STAT_STATUS_ERRP] = "ERRP",
231 [STAT_STATUS_EXCD] = "EXCD",
232 [STAT_STATUS_NONE] = "NONE",
233 [STAT_STATUS_PART] = "PART",
234 [STAT_STATUS_UNKN] = "UNKN",
235};
236
237
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]238/* List head of all known action keywords for "http-request" */
239struct http_req_action_kw_list http_req_keywords = {
240 .list = LIST_HEAD_INIT(http_req_keywords.list)
241};
242
243/* List head of all known action keywords for "http-response" */
244struct http_res_action_kw_list http_res_keywords = {
245 .list = LIST_HEAD_INIT(http_res_keywords.list)
246};
247
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]248/* We must put the messages here since GCC cannot initialize consts depending
249 * on strlen().
250 */
251struct chunk http_err_chunks[HTTP_ERR_SIZE];
252
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]253/* this struct is used between calls to smp_fetch_hdr() or smp_fetch_cookie() */
254static struct hdr_ctx static_hdr_ctx;
255
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]256#define FD_SETS_ARE_BITFIELDS
257#ifdef FD_SETS_ARE_BITFIELDS
258/*
259 * This map is used with all the FD_* macros to check whether a particular bit
260 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
261 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
262 * byte should be encoded. Be careful to always pass bytes from 0 to 255
263 * exclusively to the macros.
264 */
265fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
266fd_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]267fd_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]268
269#else
270#error "Check if your OS uses bitfields for fd_sets"
271#endif
272
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]273static 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]274
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]275void init_proto_http()
276{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]277 int i;
278 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]279 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]280
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]281 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
282 if (!http_err_msgs[msg]) {
283 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
284 abort();
285 }
286
287 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
288 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
289 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]290
291 /* initialize the log header encoding map : '{|}"#' should be encoded with
292 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
293 * URL encoding only requires '"', '#' to be encoded as well as non-
294 * printable characters above.
295 */
296 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
297 memset(url_encode_map, 0, sizeof(url_encode_map));
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]298 memset(http_encode_map, 0, sizeof(url_encode_map));
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]299 for (i = 0; i < 32; i++) {
300 FD_SET(i, hdr_encode_map);
301 FD_SET(i, url_encode_map);
302 }
303 for (i = 127; i < 256; i++) {
304 FD_SET(i, hdr_encode_map);
305 FD_SET(i, url_encode_map);
306 }
307
308 tmp = "\"#{|}";
309 while (*tmp) {
310 FD_SET(*tmp, hdr_encode_map);
311 tmp++;
312 }
313
314 tmp = "\"#";
315 while (*tmp) {
316 FD_SET(*tmp, url_encode_map);
317 tmp++;
318 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]319
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]320 /* initialize the http header encoding map. The draft httpbis define the
321 * header content as:
322 *
323 * HTTP-message = start-line
324 * *( header-field CRLF )
325 * CRLF
326 * [ message-body ]
327 * header-field = field-name ":" OWS field-value OWS
328 * field-value = *( field-content / obs-fold )
329 * field-content = field-vchar [ 1*( SP / HTAB ) field-vchar ]
330 * obs-fold = CRLF 1*( SP / HTAB )
331 * field-vchar = VCHAR / obs-text
332 * VCHAR = %x21-7E
333 * obs-text = %x80-FF
334 *
335 * All the chars are encoded except "VCHAR", "obs-text", SP and HTAB.
336 * The encoded chars are form 0x00 to 0x08, 0x0a to 0x1f and 0x7f. The
337 * "obs-fold" is volontary forgotten because haproxy remove this.
338 */
339 memset(http_encode_map, 0, sizeof(http_encode_map));
340 for (i = 0x00; i <= 0x08; i++)
341 FD_SET(i, http_encode_map);
342 for (i = 0x0a; i <= 0x1f; i++)
343 FD_SET(i, http_encode_map);
344 FD_SET(0x7f, http_encode_map);
345
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]346 /* memory allocations */
Willy Tarreau63986c72015-04-03 22:55:33 +0200[diff] [blame]347 pool2_http_txn = create_pool("http_txn", sizeof(struct http_txn), MEM_F_SHARED);
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]348 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]349 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]350}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]351
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]352/*
353 * We have 26 list of methods (1 per first letter), each of which can have
354 * up to 3 entries (2 valid, 1 null).
355 */
356struct http_method_desc {
Willy Tarreauc8987b32013-12-06 23:43:17 +0100[diff] [blame]357 enum http_meth_t meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]358 int len;
359 const char text[8];
360};
361
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]362const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]363 ['C' - 'A'] = {
364 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
365 },
366 ['D' - 'A'] = {
367 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
368 },
369 ['G' - 'A'] = {
370 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
371 },
372 ['H' - 'A'] = {
373 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
374 },
375 ['P' - 'A'] = {
376 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
377 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
378 },
379 ['T' - 'A'] = {
380 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
381 },
382 /* rest is empty like this :
383 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
384 */
385};
386
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]387const struct http_method_name http_known_methods[HTTP_METH_OTHER] = {
388 [HTTP_METH_NONE] = { "", 0 },
389 [HTTP_METH_OPTIONS] = { "OPTIONS", 7 },
390 [HTTP_METH_GET] = { "GET", 3 },
391 [HTTP_METH_HEAD] = { "HEAD", 4 },
392 [HTTP_METH_POST] = { "POST", 4 },
393 [HTTP_METH_PUT] = { "PUT", 3 },
394 [HTTP_METH_DELETE] = { "DELETE", 6 },
395 [HTTP_METH_TRACE] = { "TRACE", 5 },
396 [HTTP_METH_CONNECT] = { "CONNECT", 7 },
397};
398
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]399/* 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]400 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]401 * RFC2616 for those chars.
402 */
403
404const char http_is_spht[256] = {
405 [' '] = 1, ['\t'] = 1,
406};
407
408const char http_is_crlf[256] = {
409 ['\r'] = 1, ['\n'] = 1,
410};
411
412const char http_is_lws[256] = {
413 [' '] = 1, ['\t'] = 1,
414 ['\r'] = 1, ['\n'] = 1,
415};
416
417const char http_is_sep[256] = {
418 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
419 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
420 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
421 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
422 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
423};
424
425const char http_is_ctl[256] = {
426 [0 ... 31] = 1,
427 [127] = 1,
428};
429
430/*
431 * A token is any ASCII char that is neither a separator nor a CTL char.
432 * Do not overwrite values in assignment since gcc-2.95 will not handle
433 * them correctly. Instead, define every non-CTL char's status.
434 */
435const char http_is_token[256] = {
436 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
437 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
438 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
439 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
440 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
441 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
442 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
443 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
444 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
445 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
446 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
447 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
448 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
449 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
450 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
451 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
452 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
453 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
454 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
455 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
456 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
457 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
458 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
459 ['|'] = 1, ['}'] = 0, ['~'] = 1,
460};
461
462
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]463/*
464 * An http ver_token is any ASCII which can be found in an HTTP version,
465 * which includes 'H', 'T', 'P', '/', '.' and any digit.
466 */
467const char http_is_ver_token[256] = {
468 ['.'] = 1, ['/'] = 1,
469 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
470 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
Thierry FOURNIER63d692c2015-02-28 19:03:56 +0100[diff] [blame]471 ['H'] = 1, ['P'] = 1, ['R'] = 1, ['S'] = 1, ['T'] = 1,
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]472};
473
474
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]475/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]476 * Adds a header and its CRLF at the tail of the message's buffer, just before
477 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]478 * The header is also automatically added to the index <hdr_idx>, and the end
479 * of headers is automatically adjusted. The number of bytes added is returned
480 * on success, otherwise <0 is returned indicating an error.
481 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]482int 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]483{
484 int bytes, len;
485
486 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]487 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]488 if (!bytes)
489 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]490 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]491 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
492}
493
494/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]495 * Adds a header and its CRLF at the tail of the message's buffer, just before
496 * 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]497 * the buffer is only opened and the space reserved, but nothing is copied.
498 * The header is also automatically added to the index <hdr_idx>, and the end
499 * of headers is automatically adjusted. The number of bytes added is returned
500 * on success, otherwise <0 is returned indicating an error.
501 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]502int http_header_add_tail2(struct http_msg *msg,
503 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]504{
505 int bytes;
506
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]507 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]508 if (!bytes)
509 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]510 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]511 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
512}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]513
514/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]515 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
516 * If so, returns the position of the first non-space character relative to
517 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
518 * to return a pointer to the place after the first space. Returns 0 if the
519 * header name does not match. Checks are case-insensitive.
520 */
521int http_header_match2(const char *hdr, const char *end,
522 const char *name, int len)
523{
524 const char *val;
525
526 if (hdr + len >= end)
527 return 0;
528 if (hdr[len] != ':')
529 return 0;
530 if (strncasecmp(hdr, name, len) != 0)
531 return 0;
532 val = hdr + len + 1;
533 while (val < end && HTTP_IS_SPHT(*val))
534 val++;
535 if ((val >= end) && (len + 2 <= end - hdr))
536 return len + 2; /* we may replace starting from second space */
537 return val - hdr;
538}
539
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]540/* Find the first or next occurrence of header <name> in message buffer <sol>
541 * using headers index <idx>, and return it in the <ctx> structure. This
542 * structure holds everything necessary to use the header and find next
543 * occurrence. If its <idx> member is 0, the header is searched from the
544 * beginning. Otherwise, the next occurrence is returned. The function returns
545 * 1 when it finds a value, and 0 when there is no more. It is very similar to
546 * http_find_header2() except that it is designed to work with full-line headers
547 * whose comma is not a delimiter but is part of the syntax. As a special case,
548 * if ctx->val is NULL when searching for a new values of a header, the current
549 * header is rescanned. This allows rescanning after a header deletion.
550 */
551int http_find_full_header2(const char *name, int len,
552 char *sol, struct hdr_idx *idx,
553 struct hdr_ctx *ctx)
554{
555 char *eol, *sov;
556 int cur_idx, old_idx;
557
558 cur_idx = ctx->idx;
559 if (cur_idx) {
560 /* We have previously returned a header, let's search another one */
561 sol = ctx->line;
562 eol = sol + idx->v[cur_idx].len;
563 goto next_hdr;
564 }
565
566 /* first request for this header */
567 sol += hdr_idx_first_pos(idx);
568 old_idx = 0;
569 cur_idx = hdr_idx_first_idx(idx);
570 while (cur_idx) {
571 eol = sol + idx->v[cur_idx].len;
572
573 if (len == 0) {
574 /* No argument was passed, we want any header.
575 * To achieve this, we simply build a fake request. */
576 while (sol + len < eol && sol[len] != ':')
577 len++;
578 name = sol;
579 }
580
581 if ((len < eol - sol) &&
582 (sol[len] == ':') &&
583 (strncasecmp(sol, name, len) == 0)) {
584 ctx->del = len;
585 sov = sol + len + 1;
586 while (sov < eol && http_is_lws[(unsigned char)*sov])
587 sov++;
588
589 ctx->line = sol;
590 ctx->prev = old_idx;
591 ctx->idx = cur_idx;
592 ctx->val = sov - sol;
593 ctx->tws = 0;
594 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
595 eol--;
596 ctx->tws++;
597 }
598 ctx->vlen = eol - sov;
599 return 1;
600 }
601 next_hdr:
602 sol = eol + idx->v[cur_idx].cr + 1;
603 old_idx = cur_idx;
604 cur_idx = idx->v[cur_idx].next;
605 }
606 return 0;
607}
608
Willy Tarreauc90dc232015-02-20 13:51:36 +0100[diff] [blame]609/* Find the first or next header field in message buffer <sol> using headers
610 * index <idx>, and return it in the <ctx> structure. This structure holds
611 * everything necessary to use the header and find next occurrence. If its
612 * <idx> member is 0, the first header is retrieved. Otherwise, the next
613 * occurrence is returned. The function returns 1 when it finds a value, and
614 * 0 when there is no more. It is equivalent to http_find_full_header2() with
615 * no header name.
616 */
617int http_find_next_header(char *sol, struct hdr_idx *idx, struct hdr_ctx *ctx)
618{
619 char *eol, *sov;
620 int cur_idx, old_idx;
621 int len;
622
623 cur_idx = ctx->idx;
624 if (cur_idx) {
625 /* We have previously returned a header, let's search another one */
626 sol = ctx->line;
627 eol = sol + idx->v[cur_idx].len;
628 goto next_hdr;
629 }
630
631 /* first request for this header */
632 sol += hdr_idx_first_pos(idx);
633 old_idx = 0;
634 cur_idx = hdr_idx_first_idx(idx);
635 while (cur_idx) {
636 eol = sol + idx->v[cur_idx].len;
637
638 len = 0;
639 while (1) {
640 if (len >= eol - sol)
641 goto next_hdr;
642 if (sol[len] == ':')
643 break;
644 len++;
645 }
646
647 ctx->del = len;
648 sov = sol + len + 1;
649 while (sov < eol && http_is_lws[(unsigned char)*sov])
650 sov++;
651
652 ctx->line = sol;
653 ctx->prev = old_idx;
654 ctx->idx = cur_idx;
655 ctx->val = sov - sol;
656 ctx->tws = 0;
657
658 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
659 eol--;
660 ctx->tws++;
661 }
662 ctx->vlen = eol - sov;
663 return 1;
664
665 next_hdr:
666 sol = eol + idx->v[cur_idx].cr + 1;
667 old_idx = cur_idx;
668 cur_idx = idx->v[cur_idx].next;
669 }
670 return 0;
671}
672
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]673/* Find the end of the header value contained between <s> and <e>. See RFC2616,
674 * par 2.2 for more information. Note that it requires a valid header to return
675 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]676 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]677char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]678{
679 int quoted, qdpair;
680
681 quoted = qdpair = 0;
682 for (; s < e; s++) {
683 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]684 else if (quoted) {
685 if (*s == '\\') qdpair = 1;
686 else if (*s == '"') quoted = 0;
687 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]688 else if (*s == '"') quoted = 1;
689 else if (*s == ',') return s;
690 }
691 return s;
692}
693
694/* Find the first or next occurrence of header <name> in message buffer <sol>
695 * using headers index <idx>, and return it in the <ctx> structure. This
696 * structure holds everything necessary to use the header and find next
697 * occurrence. If its <idx> member is 0, the header is searched from the
698 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]699 * 1 when it finds a value, and 0 when there is no more. It is designed to work
700 * with headers defined as comma-separated lists. As a special case, if ctx->val
701 * is NULL when searching for a new values of a header, the current header is
702 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]703 */
704int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]705 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]706 struct hdr_ctx *ctx)
707{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]708 char *eol, *sov;
709 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]710
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]711 cur_idx = ctx->idx;
712 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]713 /* We have previously returned a value, let's search
714 * another one on the same line.
715 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]716 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]717 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]718 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]719 eol = sol + idx->v[cur_idx].len;
720
721 if (sov >= eol)
722 /* no more values in this header */
723 goto next_hdr;
724
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]725 /* values remaining for this header, skip the comma but save it
726 * for later use (eg: for header deletion).
727 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]728 sov++;
729 while (sov < eol && http_is_lws[(unsigned char)*sov])
730 sov++;
731
732 goto return_hdr;
733 }
734
735 /* first request for this header */
736 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]737 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]738 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]739 while (cur_idx) {
740 eol = sol + idx->v[cur_idx].len;
741
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]742 if (len == 0) {
743 /* No argument was passed, we want any header.
744 * To achieve this, we simply build a fake request. */
745 while (sol + len < eol && sol[len] != ':')
746 len++;
747 name = sol;
748 }
749
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]750 if ((len < eol - sol) &&
751 (sol[len] == ':') &&
752 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]753 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]754 sov = sol + len + 1;
755 while (sov < eol && http_is_lws[(unsigned char)*sov])
756 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]757
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]758 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]759 ctx->prev = old_idx;
760 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]761 ctx->idx = cur_idx;
762 ctx->val = sov - sol;
763
764 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]765 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]766 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]767 eol--;
768 ctx->tws++;
769 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]770 ctx->vlen = eol - sov;
771 return 1;
772 }
773 next_hdr:
774 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]775 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]776 cur_idx = idx->v[cur_idx].next;
777 }
778 return 0;
779}
780
781int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]782 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]783 struct hdr_ctx *ctx)
784{
785 return http_find_header2(name, strlen(name), sol, idx, ctx);
786}
787
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]788/* Remove one value of a header. This only works on a <ctx> returned by one of
789 * the http_find_header functions. The value is removed, as well as surrounding
790 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]791 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]792 * message <msg>. The new index is returned. If it is zero, it means there is
793 * no more header, so any processing may stop. The ctx is always left in a form
794 * that can be handled by http_find_header2() to find next occurrence.
795 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]796int 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]797{
798 int cur_idx = ctx->idx;
799 char *sol = ctx->line;
800 struct hdr_idx_elem *hdr;
801 int delta, skip_comma;
802
803 if (!cur_idx)
804 return 0;
805
806 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]807 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]808 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]809 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]810 http_msg_move_end(msg, delta);
811 idx->used--;
812 hdr->len = 0; /* unused entry */
813 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]814 if (idx->tail == ctx->idx)
815 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]816 ctx->idx = ctx->prev; /* walk back to the end of previous header */
Willy Tarreau7c1c2172015-01-07 17:23:50 +0100[diff] [blame]817 ctx->line -= idx->v[ctx->idx].len + idx->v[ctx->idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]818 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]819 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]820 return ctx->idx;
821 }
822
823 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]824 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
825 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]826 */
827
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]828 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]829 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]830 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]831 NULL, 0);
832 hdr->len += delta;
833 http_msg_move_end(msg, delta);
834 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]835 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]836 return ctx->idx;
837}
838
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]839/* This function handles a server error at the stream interface level. The
840 * stream interface is assumed to be already in a closed state. An optional
841 * message is copied into the input buffer, and an HTTP status code stored.
842 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]843 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]844 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]845static void http_server_error(struct stream *s, struct stream_interface *si,
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]846 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]847{
Willy Tarreau2bb4a962014-11-28 11:11:05 +0100[diff] [blame]848 channel_auto_read(si_oc(si));
849 channel_abort(si_oc(si));
850 channel_auto_close(si_oc(si));
851 channel_erase(si_oc(si));
852 channel_auto_close(si_ic(si));
853 channel_auto_read(si_ic(si));
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]854 if (status > 0 && msg) {
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]855 s->txn->status = status;
Willy Tarreau2bb4a962014-11-28 11:11:05 +0100[diff] [blame]856 bo_inject(si_ic(si), msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]857 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]858 if (!(s->flags & SF_ERR_MASK))
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]859 s->flags |= err;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]860 if (!(s->flags & SF_FINST_MASK))
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]861 s->flags |= finst;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]862}
863
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]864/* This function returns the appropriate error location for the given stream
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]865 * and message.
866 */
867
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]868struct chunk *http_error_message(struct stream *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]869{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]870 if (s->be->errmsg[msgnum].str)
871 return &s->be->errmsg[msgnum];
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]872 else if (strm_fe(s)->errmsg[msgnum].str)
873 return &strm_fe(s)->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]874 else
875 return &http_err_chunks[msgnum];
876}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]877
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]878/*
879 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
880 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
881 */
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]882enum http_meth_t find_http_meth(const char *str, const int len)
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]883{
884 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]885 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]886
887 m = ((unsigned)*str - 'A');
888
889 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]890 for (h = http_methods[m]; h->len > 0; h++) {
891 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]892 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]893 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]894 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]895 };
896 return HTTP_METH_OTHER;
897 }
898 return HTTP_METH_NONE;
899
900}
901
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]902/* Parse the URI from the given transaction (which is assumed to be in request
903 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
904 * It is returned otherwise.
905 */
906static char *
907http_get_path(struct http_txn *txn)
908{
909 char *ptr, *end;
910
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]911 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]912 end = ptr + txn->req.sl.rq.u_l;
913
914 if (ptr >= end)
915 return NULL;
916
917 /* RFC2616, par. 5.1.2 :
918 * Request-URI = "*" | absuri | abspath | authority
919 */
920
921 if (*ptr == '*')
922 return NULL;
923
924 if (isalpha((unsigned char)*ptr)) {
925 /* this is a scheme as described by RFC3986, par. 3.1 */
926 ptr++;
927 while (ptr < end &&
928 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
929 ptr++;
930 /* skip '://' */
931 if (ptr == end || *ptr++ != ':')
932 return NULL;
933 if (ptr == end || *ptr++ != '/')
934 return NULL;
935 if (ptr == end || *ptr++ != '/')
936 return NULL;
937 }
938 /* skip [user[:passwd]@]host[:[port]] */
939
940 while (ptr < end && *ptr != '/')
941 ptr++;
942
943 if (ptr == end)
944 return NULL;
945
946 /* OK, we got the '/' ! */
947 return ptr;
948}
949
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]950/* Parse the URI from the given string and look for the "/" beginning the PATH.
951 * If not found, return NULL. It is returned otherwise.
952 */
953static char *
954http_get_path_from_string(char *str)
955{
956 char *ptr = str;
957
958 /* RFC2616, par. 5.1.2 :
959 * Request-URI = "*" | absuri | abspath | authority
960 */
961
962 if (*ptr == '*')
963 return NULL;
964
965 if (isalpha((unsigned char)*ptr)) {
966 /* this is a scheme as described by RFC3986, par. 3.1 */
967 ptr++;
968 while (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.')
969 ptr++;
970 /* skip '://' */
971 if (*ptr == '\0' || *ptr++ != ':')
972 return NULL;
973 if (*ptr == '\0' || *ptr++ != '/')
974 return NULL;
975 if (*ptr == '\0' || *ptr++ != '/')
976 return NULL;
977 }
978 /* skip [user[:passwd]@]host[:[port]] */
979
980 while (*ptr != '\0' && *ptr != ' ' && *ptr != '/')
981 ptr++;
982
983 if (*ptr == '\0' || *ptr == ' ')
984 return NULL;
985
986 /* OK, we got the '/' ! */
987 return ptr;
988}
989
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]990/* Returns a 302 for a redirectable request that reaches a server working in
991 * in redirect mode. This may only be called just after the stream interface
992 * has moved to SI_ST_ASS. Unprocessable requests are left unchanged and will
993 * follow normal proxy processing. NOTE: this function is designed to support
994 * being called once data are scheduled for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]995 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]996void http_perform_server_redirect(struct stream *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]997{
998 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]999 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1000 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1001 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1002
1003 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1004 trash.len = strlen(HTTP_302);
1005 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1006
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]1007 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1008
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1009 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1010 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1011 return;
1012
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]1013 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]1014 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1015 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
1016 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]1017 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1018
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1019 /* 3: add the request URI. Since it was already forwarded, we need
1020 * to temporarily rewind the buffer.
1021 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1022 txn = s->txn;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1023 b_rew(s->req.buf, rewind = http_hdr_rewind(&txn->req));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1024
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1025 path = http_get_path(txn);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1026 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]1027
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1028 b_adv(s->req.buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]1029
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1030 if (!path)
1031 return;
1032
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1033 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1034 return;
1035
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1036 memcpy(trash.str + trash.len, path, len);
1037 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1038
1039 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1040 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
1041 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1042 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]1043 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
1044 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1045 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1046
1047 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]1048 si_shutr(si);
1049 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1050 si->err_type = SI_ET_NONE;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1051 si->state = SI_ST_CLO;
1052
1053 /* send the message */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1054 http_server_error(s, si, SF_ERR_LOCAL, SF_FINST_C, 302, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1055
1056 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau4521ba62013-01-24 01:25:25 +0100[diff] [blame]1057 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500[diff] [blame]1058 srv_set_sess_last(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1059}
1060
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]1061/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1062 * that the server side is closed. Note that err_type is actually a
1063 * bitmask, where almost only aborts may be cumulated with other
1064 * values. We consider that aborted operations are more important
1065 * than timeouts or errors due to the fact that nobody else in the
1066 * logs might explain incomplete retries. All others should avoid
1067 * being cumulated. It should normally not be possible to have multiple
1068 * aborts at once, but just in case, the first one in sequence is reported.
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1069 * Note that connection errors appearing on the second request of a keep-alive
1070 * connection are not reported since this allows the client to retry.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1071 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1072void http_return_srv_error(struct stream *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1073{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]1074 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1075
1076 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1077 http_server_error(s, si, SF_ERR_CLICL, SF_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1078 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1079 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1080 http_server_error(s, si, SF_ERR_CLICL, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1081 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1082 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1083 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1084 http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1085 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1086 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1087 http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1088 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1089 else if (err_type & SI_ET_CONN_TO)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1090 http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1091 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1092 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1093 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1094 http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_C,
1095 503, (s->flags & SF_SRV_REUSED) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1096 http_error_message(s, HTTP_ERR_503));
Willy Tarreau2d400bb2012-05-14 12:11:47 +0200[diff] [blame]1097 else if (err_type & SI_ET_CONN_RES)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1098 http_server_error(s, si, SF_ERR_RESOURCE, SF_FINST_C,
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1099 503, (s->txn->flags & TX_NOT_FIRST) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1100 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1101 else /* SI_ET_CONN_OTHER and others */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]1102 http_server_error(s, si, SF_ERR_INTERNAL, SF_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1103 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1104}
1105
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1106extern const char sess_term_cond[8];
1107extern const char sess_fin_state[8];
1108extern const char *monthname[12];
Willy Tarreau63986c72015-04-03 22:55:33 +0200[diff] [blame]1109struct pool_head *pool2_http_txn;
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]1110struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]1111struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]1112struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1113
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1114/*
1115 * Capture headers from message starting at <som> according to header list
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1116 * <cap_hdr>, and fill the <cap> pointers appropriately.
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1117 */
1118void capture_headers(char *som, struct hdr_idx *idx,
1119 char **cap, struct cap_hdr *cap_hdr)
1120{
1121 char *eol, *sol, *col, *sov;
1122 int cur_idx;
1123 struct cap_hdr *h;
1124 int len;
1125
1126 sol = som + hdr_idx_first_pos(idx);
1127 cur_idx = hdr_idx_first_idx(idx);
1128
1129 while (cur_idx) {
1130 eol = sol + idx->v[cur_idx].len;
1131
1132 col = sol;
1133 while (col < eol && *col != ':')
1134 col++;
1135
1136 sov = col + 1;
1137 while (sov < eol && http_is_lws[(unsigned char)*sov])
1138 sov++;
1139
1140 for (h = cap_hdr; h; h = h->next) {
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1141 if (h->namelen && (h->namelen == col - sol) &&
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1142 (strncasecmp(sol, h->name, h->namelen) == 0)) {
1143 if (cap[h->index] == NULL)
1144 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]1145 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1146
1147 if (cap[h->index] == NULL) {
1148 Alert("HTTP capture : out of memory.\n");
1149 continue;
1150 }
1151
1152 len = eol - sov;
1153 if (len > h->len)
1154 len = h->len;
1155
1156 memcpy(cap[h->index], sov, len);
1157 cap[h->index][len]=0;
1158 }
1159 }
1160 sol = eol + idx->v[cur_idx].cr + 1;
1161 cur_idx = idx->v[cur_idx].next;
1162 }
1163}
1164
1165
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1166/* either we find an LF at <ptr> or we jump to <bad>.
1167 */
1168#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
1169
1170/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
1171 * otherwise to <http_msg_ood> with <state> set to <st>.
1172 */
1173#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
1174 ptr++; \
1175 if (likely(ptr < end)) \
1176 goto good; \
1177 else { \
1178 state = (st); \
1179 goto http_msg_ood; \
1180 } \
1181 } while (0)
1182
1183
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1184/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1185 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1186 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
1187 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
1188 * will give undefined results.
1189 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1190 * and that msg->sol points to the beginning of the response.
1191 * If a complete line is found (which implies that at least one CR or LF is
1192 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1193 * returned indicating an incomplete line (which does not mean that parts have
1194 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1195 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1196 * upon next call.
1197 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1198 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1199 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1200 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1201 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1202 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1203const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1204 enum ht_state state, const char *ptr, const char *end,
1205 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1206{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1207 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1208
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1209 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1210 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1211 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1212 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1213 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
1214
1215 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1216 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1217 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1218 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1219 state = HTTP_MSG_ERROR;
1220 break;
1221
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1222 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1223 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1224 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1225 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1226 goto http_msg_rpcode;
1227 }
1228 if (likely(HTTP_IS_SPHT(*ptr)))
1229 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1230 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1231 state = HTTP_MSG_ERROR;
1232 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1233
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1234 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1235 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1236 if (likely(!HTTP_IS_LWS(*ptr)))
1237 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
1238
1239 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1240 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1241 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1242 }
1243
1244 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1245 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1246 http_msg_rsp_reason:
1247 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1248 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1249 msg->sl.st.r_l = 0;
1250 goto http_msg_rpline_eol;
1251
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1252 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1253 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1254 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1255 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1256 goto http_msg_rpreason;
1257 }
1258 if (likely(HTTP_IS_SPHT(*ptr)))
1259 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1260 /* so it's a CR/LF, so there is no reason phrase */
1261 goto http_msg_rsp_reason;
1262
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1263 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1264 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1265 if (likely(!HTTP_IS_CRLF(*ptr)))
1266 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1267 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1268 http_msg_rpline_eol:
1269 /* We have seen the end of line. Note that we do not
1270 * necessarily have the \n yet, but at least we know that we
1271 * have EITHER \r OR \n, otherwise the response would not be
1272 * complete. We can then record the response length and return
1273 * to the caller which will be able to register it.
1274 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1275 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1276 return ptr;
1277
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1278 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1279#ifdef DEBUG_FULL
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1280 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1281 exit(1);
1282#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1283 ;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1284 }
1285
1286 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1287 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1288 if (ret_state)
1289 *ret_state = state;
1290 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1291 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1292 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1293}
1294
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1295/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1296 * This function parses a request line between <ptr> and <end>, starting with
1297 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1298 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1299 * will give undefined results.
1300 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1301 * and that msg->sol points to the beginning of the request.
1302 * If a complete line is found (which implies that at least one CR or LF is
1303 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1304 * returned indicating an incomplete line (which does not mean that parts have
1305 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1306 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1307 * upon next call.
1308 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1309 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1310 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1311 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1312 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1313 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1314const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1315 enum ht_state state, const char *ptr, const char *end,
1316 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1317{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1318 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1319
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1320 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1321 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1322 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1323 if (likely(HTTP_IS_TOKEN(*ptr)))
1324 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1325
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1326 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1327 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1328 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1329 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1330
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1331 if (likely(HTTP_IS_CRLF(*ptr))) {
1332 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1333 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1334 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1335 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1336 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1337 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1338 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1339 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1340 msg->sl.rq.v_l = 0;
1341 goto http_msg_rqline_eol;
1342 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1343 state = HTTP_MSG_ERROR;
1344 break;
1345
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1346 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1347 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1348 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1349 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1350 goto http_msg_rquri;
1351 }
1352 if (likely(HTTP_IS_SPHT(*ptr)))
1353 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1354 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1355 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1356
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1357 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1358 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1359 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1360 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1361
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1362 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1363 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1364 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1365 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1366
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1367 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1368 /* non-ASCII chars are forbidden unless option
1369 * accept-invalid-http-request is enabled in the frontend.
1370 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1371 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1372 if (msg->err_pos < -1)
1373 goto invalid_char;
1374 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1375 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1376 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1377 }
1378
1379 if (likely(HTTP_IS_CRLF(*ptr))) {
1380 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1381 goto http_msg_req09_uri_e;
1382 }
1383
1384 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1385 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1386 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1387 state = HTTP_MSG_ERROR;
1388 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1389
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1390 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1391 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1392 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1393 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1394 goto http_msg_rqver;
1395 }
1396 if (likely(HTTP_IS_SPHT(*ptr)))
1397 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1398 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1399 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1400
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1401 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1402 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1403 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1404 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1405
1406 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1407 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1408 http_msg_rqline_eol:
1409 /* We have seen the end of line. Note that we do not
1410 * necessarily have the \n yet, but at least we know that we
1411 * have EITHER \r OR \n, otherwise the request would not be
1412 * complete. We can then record the request length and return
1413 * to the caller which will be able to register it.
1414 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1415 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1416 return ptr;
1417 }
1418
1419 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1420 state = HTTP_MSG_ERROR;
1421 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1422
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1423 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1424#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1425 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1426 exit(1);
1427#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1428 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1429 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1430
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1431 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1432 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1433 if (ret_state)
1434 *ret_state = state;
1435 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1436 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1437 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1438}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1439
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1440/*
1441 * Returns the data from Authorization header. Function may be called more
1442 * than once so data is stored in txn->auth_data. When no header is found
1443 * 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]1444 * searching again for something we are unable to find anyway. However, if
1445 * the result if valid, the cache is not reused because we would risk to
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1446 * have the credentials overwritten by another stream in parallel.
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1447 */
1448
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]1449/* This bufffer is initialized in the file 'src/haproxy.c'. This length is
1450 * set according to global.tune.bufsize.
1451 */
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1452char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1453
1454int
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1455get_http_auth(struct stream *s)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1456{
1457
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]1458 struct http_txn *txn = s->txn;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1459 struct chunk auth_method;
1460 struct hdr_ctx ctx;
1461 char *h, *p;
1462 int len;
1463
1464#ifdef DEBUG_AUTH
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]1465 printf("Auth for stream %p: %d\n", s, txn->auth.method);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1466#endif
1467
1468 if (txn->auth.method == HTTP_AUTH_WRONG)
1469 return 0;
1470
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1471 txn->auth.method = HTTP_AUTH_WRONG;
1472
1473 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1474
1475 if (txn->flags & TX_USE_PX_CONN) {
1476 h = "Proxy-Authorization";
1477 len = strlen(h);
1478 } else {
1479 h = "Authorization";
1480 len = strlen(h);
1481 }
1482
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]1483 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]1484 return 0;
1485
1486 h = ctx.line + ctx.val;
1487
1488 p = memchr(h, ' ', ctx.vlen);
1489 if (!p || p == h)
1490 return 0;
1491
1492 chunk_initlen(&auth_method, h, 0, p-h);
1493 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1494
1495 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1496
1497 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1498 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1499
1500 if (len < 0)
1501 return 0;
1502
1503
1504 get_http_auth_buff[len] = '\0';
1505
1506 p = strchr(get_http_auth_buff, ':');
1507
1508 if (!p)
1509 return 0;
1510
1511 txn->auth.user = get_http_auth_buff;
1512 *p = '\0';
1513 txn->auth.pass = p+1;
1514
1515 txn->auth.method = HTTP_AUTH_BASIC;
1516 return 1;
1517 }
1518
1519 return 0;
1520}
1521
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1522
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1523/*
1524 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1525 * depending on the initial msg->msg_state. The caller is responsible for
1526 * ensuring that the message does not wrap. The function can be preempted
1527 * everywhere when data are missing and recalled at the exact same location
1528 * with no information loss. The message may even be realigned between two
1529 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1530 * 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]1531 * fields. Note that msg->sol will be initialized after completing the first
1532 * state, so that none of the msg pointers has to be initialized prior to the
1533 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1534 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1535void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1536{
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1537 enum ht_state state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1538 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1539 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1540
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1541 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1542 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1543 ptr = buf->p + msg->next;
1544 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1545
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1546 if (unlikely(ptr >= end))
1547 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1548
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1549 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1550 /*
1551 * First, states that are specific to the response only.
1552 * We check them first so that request and headers are
1553 * closer to each other (accessed more often).
1554 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1555 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1556 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1557 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1558 /* we have a start of message, but we have to check
1559 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1560 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1561 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1562 if (unlikely(ptr != buf->p)) {
1563 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1564 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1565 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1566 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1567 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1568 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1569 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1570 hdr_idx_init(idx);
1571 state = HTTP_MSG_RPVER;
1572 goto http_msg_rpver;
1573 }
1574
1575 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1576 goto http_msg_invalid;
1577
1578 if (unlikely(*ptr == '\n'))
1579 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1580 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1581 /* stop here */
1582
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1583 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1584 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1585 EXPECT_LF_HERE(ptr, http_msg_invalid);
1586 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1587 /* stop here */
1588
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1589 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1590 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1591 case HTTP_MSG_RPVER_SP:
1592 case HTTP_MSG_RPCODE:
1593 case HTTP_MSG_RPCODE_SP:
1594 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1595 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1596 state, ptr, end,
1597 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1598 if (unlikely(!ptr))
1599 return;
1600
1601 /* we have a full response and we know that we have either a CR
1602 * or an LF at <ptr>.
1603 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1604 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1605
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1606 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1607 if (likely(*ptr == '\r'))
1608 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1609 goto http_msg_rpline_end;
1610
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1611 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1612 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1613 /* msg->sol must point to the first of CR or LF. */
1614 EXPECT_LF_HERE(ptr, http_msg_invalid);
1615 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1616 /* stop here */
1617
1618 /*
1619 * Second, states that are specific to the request only
1620 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1621 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1622 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1623 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1624 /* we have a start of message, but we have to check
1625 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1626 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1627 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1628 if (likely(ptr != buf->p)) {
1629 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1630 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1631 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1632 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1633 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1634 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1635 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1636 state = HTTP_MSG_RQMETH;
1637 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1638 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1639
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1640 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1641 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1642
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1643 if (unlikely(*ptr == '\n'))
1644 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1645 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1646 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1647
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1648 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1649 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1650 EXPECT_LF_HERE(ptr, http_msg_invalid);
1651 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1652 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1653
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1654 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1655 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1656 case HTTP_MSG_RQMETH_SP:
1657 case HTTP_MSG_RQURI:
1658 case HTTP_MSG_RQURI_SP:
1659 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1660 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1661 state, ptr, end,
1662 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1663 if (unlikely(!ptr))
1664 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1665
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1666 /* we have a full request and we know that we have either a CR
1667 * or an LF at <ptr>.
1668 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1669 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1670
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1671 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1672 if (likely(*ptr == '\r'))
1673 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1674 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1675
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1676 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1677 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1678 /* check for HTTP/0.9 request : no version information available.
1679 * msg->sol must point to the first of CR or LF.
1680 */
1681 if (unlikely(msg->sl.rq.v_l == 0))
1682 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1683
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1684 EXPECT_LF_HERE(ptr, http_msg_invalid);
1685 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1686 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1687
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1688 /*
1689 * Common states below
1690 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1691 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1692 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1693 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1694 if (likely(!HTTP_IS_CRLF(*ptr))) {
1695 goto http_msg_hdr_name;
1696 }
1697
1698 if (likely(*ptr == '\r'))
1699 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1700 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1701
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1702 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1703 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1704 /* assumes msg->sol points to the first char */
1705 if (likely(HTTP_IS_TOKEN(*ptr)))
1706 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1707
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1708 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1709 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]1710
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1711 if (likely(msg->err_pos < -1) || *ptr == '\n')
1712 goto http_msg_invalid;
1713
1714 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1715 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1716
1717 /* and we still accept this non-token character */
1718 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1719
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1720 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1721 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1722 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1723 if (likely(HTTP_IS_SPHT(*ptr)))
1724 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]1725
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1726 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1727 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1728
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1729 if (likely(!HTTP_IS_CRLF(*ptr))) {
1730 goto http_msg_hdr_val;
1731 }
1732
1733 if (likely(*ptr == '\r'))
1734 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1735 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1736
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1737 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1738 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1739 EXPECT_LF_HERE(ptr, http_msg_invalid);
1740 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]1741
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1742 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1743 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1744 if (likely(HTTP_IS_SPHT(*ptr))) {
1745 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1746 for (; buf->p + msg->sov < ptr; msg->sov++)
1747 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1748 goto http_msg_hdr_l1_sp;
1749 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1750 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1751 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1752 goto http_msg_complete_header;
1753
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1754 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1755 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1756 /* assumes msg->sol points to the first char, and msg->sov
1757 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1758 */
1759 if (likely(!HTTP_IS_CRLF(*ptr)))
1760 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1761
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1762 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1763 /* Note: we could also copy eol into ->eoh so that we have the
1764 * real header end in case it ends with lots of LWS, but is this
1765 * really needed ?
1766 */
1767 if (likely(*ptr == '\r'))
1768 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1769 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1770
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1771 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1772 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1773 EXPECT_LF_HERE(ptr, http_msg_invalid);
1774 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]1775
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1776 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1777 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1778 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1779 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1780 for (; buf->p + msg->eol < ptr; msg->eol++)
1781 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1782 goto http_msg_hdr_val;
1783 }
1784 http_msg_complete_header:
1785 /*
1786 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1787 * Assumes msg->sol points to the first char, msg->sov points
1788 * to the first character of the value and msg->eol to the
1789 * first CR or LF so we know how the line ends. We insert last
1790 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1791 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1792 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1793 idx, idx->tail) < 0))
1794 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1795
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1796 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1797 if (likely(!HTTP_IS_CRLF(*ptr))) {
1798 goto http_msg_hdr_name;
1799 }
1800
1801 if (likely(*ptr == '\r'))
1802 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1803 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1804
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1805 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1806 http_msg_last_lf:
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]1807 /* Assumes msg->sol points to the first of either CR or LF.
1808 * Sets ->sov and ->next to the total header length, ->eoh to
1809 * the last CRLF, and ->eol to the last CRLF length (1 or 2).
1810 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1811 EXPECT_LF_HERE(ptr, http_msg_invalid);
1812 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1813 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1814 msg->eoh = msg->sol;
1815 msg->sol = 0;
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]1816 msg->eol = msg->sov - msg->eoh;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1817 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1818 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1819
1820 case HTTP_MSG_ERROR:
1821 /* this may only happen if we call http_msg_analyser() twice with an error */
1822 break;
1823
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1824 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1825#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1826 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1827 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1828#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1829 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1830 }
1831 http_msg_ood:
1832 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1833 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1834 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1835 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1836
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1837 http_msg_invalid:
1838 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1839 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1840 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1841 return;
1842}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1843
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1844/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1845 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1846 * nothing is done and 1 is returned.
1847 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1848static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1849{
1850 int delta;
1851 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1852 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1853
1854 if (msg->sl.rq.v_l != 0)
1855 return 1;
1856
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]1857 /* RFC 1945 allows only GET for HTTP/0.9 requests */
1858 if (txn->meth != HTTP_METH_GET)
1859 return 0;
1860
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1861 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1862 delta = 0;
1863
1864 if (msg->sl.rq.u_l == 0) {
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]1865 /* HTTP/0.9 requests *must* have a request URI, per RFC 1945 */
1866 return 0;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1867 }
1868 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1869 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]1870 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1871 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1872 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1873 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1874 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1875 NULL, NULL);
1876 if (unlikely(!cur_end))
1877 return 0;
1878
1879 /* we have a full HTTP/1.0 request now and we know that
1880 * we have either a CR or an LF at <ptr>.
1881 */
1882 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1883 return 1;
1884}
1885
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1886/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1887 * and "keep-alive" values. If we already know that some headers may safely
1888 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1889 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1890 * - 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]1891 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1892 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1893 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1894 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1895 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1896 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1897void 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]1898{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1899 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1900 const char *hdr_val = "Connection";
1901 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1902
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1903 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1904 return;
1905
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1906 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1907 hdr_val = "Proxy-Connection";
1908 hdr_len = 16;
1909 }
1910
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1911 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1912 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1913 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]1914 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1915 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1916 if (to_del & 2)
1917 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1918 else
1919 txn->flags |= TX_CON_KAL_SET;
1920 }
1921 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1922 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1923 if (to_del & 1)
1924 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1925 else
1926 txn->flags |= TX_CON_CLO_SET;
1927 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1928 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
1929 txn->flags |= TX_HDR_CONN_UPG;
1930 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1931 }
1932
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1933 txn->flags |= TX_HDR_CONN_PRS;
1934 return;
1935}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1936
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1937/* Apply desired changes on the Connection: header. Values may be removed and/or
1938 * added depending on the <wanted> flags, which are exclusively composed of
1939 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1940 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1941 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1942void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1943{
1944 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1945 const char *hdr_val = "Connection";
1946 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1947
1948 ctx.idx = 0;
1949
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1950
1951 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1952 hdr_val = "Proxy-Connection";
1953 hdr_len = 16;
1954 }
1955
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1956 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1957 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]1958 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1959 if (wanted & TX_CON_KAL_SET)
1960 txn->flags |= TX_CON_KAL_SET;
1961 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1962 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1963 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1964 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1965 if (wanted & TX_CON_CLO_SET)
1966 txn->flags |= TX_CON_CLO_SET;
1967 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1968 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1969 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1970 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1971
1972 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1973 return;
1974
1975 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1976 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1977 hdr_val = "Connection: close";
1978 hdr_len = 17;
1979 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1980 hdr_val = "Proxy-Connection: close";
1981 hdr_len = 23;
1982 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1983 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1984 }
1985
1986 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1987 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1988 hdr_val = "Connection: keep-alive";
1989 hdr_len = 22;
1990 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1991 hdr_val = "Proxy-Connection: keep-alive";
1992 hdr_len = 28;
1993 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1994 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1995 }
1996 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1997}
1998
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]1999/* Parse the chunk size at msg->next. Once done, it adjusts ->next to point to
2000 * the first byte of data after the chunk size, so that we know we can forward
2001 * exactly msg->next bytes. msg->sol contains the exact number of bytes forming
2002 * the chunk size. That way it is always possible to differentiate between the
2003 * start of the body and the start of the data.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2004 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2005 * 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]2006 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2007static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2008{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2009 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2010 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2011 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2012 const char *end = buf->data + buf->size;
2013 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2014 unsigned int chunk = 0;
2015
2016 /* The chunk size is in the following form, though we are only
2017 * interested in the size and CRLF :
2018 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
2019 */
2020 while (1) {
2021 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2022 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2023 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2024 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2025 if (c < 0) /* not a hex digit anymore */
2026 break;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2027 if (unlikely(++ptr >= end))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2028 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]2029 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2030 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2031 chunk = (chunk << 4) + c;
2032 }
2033
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2034 /* empty size not allowed */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2035 if (unlikely(ptr == ptr_old))
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2036 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2037
2038 while (http_is_spht[(unsigned char)*ptr]) {
2039 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2040 ptr = buf->data;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2041 if (unlikely(ptr == stop))
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2042 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2043 }
2044
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2045 /* Up to there, we know that at least one byte is present at *ptr. Check
2046 * for the end of chunk size.
2047 */
2048 while (1) {
2049 if (likely(HTTP_IS_CRLF(*ptr))) {
2050 /* we now have a CR or an LF at ptr */
2051 if (likely(*ptr == '\r')) {
2052 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2053 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2054 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2055 return 0;
2056 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2057
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2058 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2059 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2060 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2061 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2062 /* done */
2063 break;
2064 }
2065 else if (*ptr == ';') {
2066 /* chunk extension, ends at next CRLF */
2067 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2068 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2069 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2070 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2071
2072 while (!HTTP_IS_CRLF(*ptr)) {
2073 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2074 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2075 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2076 return 0;
2077 }
2078 /* we have a CRLF now, loop above */
2079 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2080 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2081 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2082 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2083 }
2084
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2085 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2086 * which may or may not be present. We save that into ->next,
2087 * and the number of bytes parsed into msg->sol.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2088 */
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2089 msg->sol = ptr - ptr_old;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2090 if (unlikely(ptr < ptr_old))
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2091 msg->sol += buf->size;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2092 msg->next = buffer_count(buf, buf->p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2093 msg->chunk_len = chunk;
2094 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2095 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2096 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2097 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2098 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2099 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2100}
2101
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2102/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2103 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2104 * the trailers is found, it is automatically scheduled to be forwarded,
2105 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
2106 * If not enough data are available, the function does not change anything
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2107 * except maybe msg->next if it could parse some lines, and returns zero.
2108 * If a parse error is encountered, the function returns < 0 and does not
2109 * change anything except maybe msg->next. Note that the message must
2110 * already be in HTTP_MSG_TRAILERS state before calling this function,
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2111 * which implies that all non-trailers data have already been scheduled for
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2112 * forwarding, and that msg->next exactly matches the length of trailers
2113 * already parsed and not forwarded. It is also important to note that this
2114 * function is designed to be able to parse wrapped headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2115 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2116static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2117{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2118 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2119
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2120 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2121 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2122 const char *p1 = NULL, *p2 = NULL;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2123 const char *ptr = b_ptr(buf, msg->next);
2124 const char *stop = bi_end(buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2125 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2126
2127 /* scan current line and stop at LF or CRLF */
2128 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2129 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2130 return 0;
2131
2132 if (*ptr == '\n') {
2133 if (!p1)
2134 p1 = ptr;
2135 p2 = ptr;
2136 break;
2137 }
2138
2139 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2140 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2141 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2142 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2143 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2144 p1 = ptr;
2145 }
2146
2147 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2148 if (ptr >= buf->data + buf->size)
2149 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2150 }
2151
2152 /* after LF; point to beginning of next line */
2153 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2154 if (p2 >= buf->data + buf->size)
2155 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2156
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2157 bytes = p2 - b_ptr(buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2158 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2159 bytes += buf->size;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2160
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2161 if (p1 == b_ptr(buf, msg->next)) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2162 /* LF/CRLF at beginning of line => end of trailers at p2.
2163 * Everything was scheduled for forwarding, there's nothing
2164 * left from this message.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]2165 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2166 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2167 msg->msg_state = HTTP_MSG_DONE;
2168 return 1;
2169 }
2170 /* OK, next line then */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2171 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2172 }
2173}
2174
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2175/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF
2176 * or a possible LF alone at the end of a chunk. It automatically adjusts
2177 * msg->next in order to include this part into the next forwarding phase.
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2178 * 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]2179 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
2180 * not enough data are available, the function does not change anything and
2181 * returns zero. If a parse error is encountered, the function returns < 0 and
2182 * does not change anything. Note: this function is designed to parse wrapped
2183 * CRLF at the end of the buffer.
2184 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2185static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2186{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2187 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2188 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2189 int bytes;
2190
2191 /* NB: we'll check data availabilty at the end. It's not a
2192 * problem because whatever we match first will be checked
2193 * against the correct length.
2194 */
2195 bytes = 1;
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2196 ptr = b_ptr(buf, msg->next);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2197 if (*ptr == '\r') {
2198 bytes++;
2199 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2200 if (ptr >= buf->data + buf->size)
2201 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2202 }
2203
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2204 if (msg->next + bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2205 return 0;
2206
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2207 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2208 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2209 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2210 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2211
2212 ptr++;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2213 if (unlikely(ptr >= buf->data + buf->size))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2214 ptr = buf->data;
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2215 /* Advance ->next to allow the CRLF to be forwarded */
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2216 msg->next += bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2217 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
2218 return 1;
2219}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2220
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2221/* Parses a qvalue and returns it multipled by 1000, from 0 to 1000. If the
2222 * value is larger than 1000, it is bound to 1000. The parser consumes up to
2223 * 1 digit, one dot and 3 digits and stops on the first invalid character.
2224 * Unparsable qvalues return 1000 as "q=1.000".
2225 */
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2226int parse_qvalue(const char *qvalue, const char **end)
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2227{
2228 int q = 1000;
2229
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2230 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2231 goto out;
2232 q = (*qvalue++ - '0') * 1000;
2233
2234 if (*qvalue++ != '.')
2235 goto out;
2236
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2237 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2238 goto out;
2239 q += (*qvalue++ - '0') * 100;
2240
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2241 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2242 goto out;
2243 q += (*qvalue++ - '0') * 10;
2244
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2245 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2246 goto out;
2247 q += (*qvalue++ - '0') * 1;
2248 out:
2249 if (q > 1000)
2250 q = 1000;
Willy Tarreau38b3aa52014-04-22 23:32:05 +0200[diff] [blame]2251 if (end)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2252 *end = qvalue;
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2253 return q;
2254}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2255
2256/*
2257 * Selects a compression algorithm depending on the client request.
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2258 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2259int select_compression_request_header(struct stream *s, struct buffer *req)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2260{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]2261 struct http_txn *txn = s->txn;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2262 struct http_msg *msg = &txn->req;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2263 struct hdr_ctx ctx;
2264 struct comp_algo *comp_algo = NULL;
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2265 struct comp_algo *comp_algo_back = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2266
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]2267 /* Disable compression for older user agents announcing themselves as "Mozilla/4"
2268 * 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]2269 * See http://zoompf.com/2012/02/lose-the-wait-http-compression for more details.
2270 */
2271 ctx.idx = 0;
2272 if (http_find_header2("User-Agent", 10, req->p, &txn->hdr_idx, &ctx) &&
2273 ctx.vlen >= 9 &&
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]2274 memcmp(ctx.line + ctx.val, "Mozilla/4", 9) == 0 &&
2275 (ctx.vlen < 31 ||
2276 memcmp(ctx.line + ctx.val + 25, "MSIE ", 5) != 0 ||
2277 ctx.line[ctx.val + 30] < '6' ||
2278 (ctx.line[ctx.val + 30] == '6' &&
2279 (ctx.vlen < 54 || memcmp(ctx.line + 51, "SV1", 3) != 0)))) {
2280 s->comp_algo = NULL;
2281 return 0;
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2282 }
2283
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2284 /* search for the algo in the backend in priority or the frontend */
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]2285 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]2286 int best_q = 0;
2287
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2288 ctx.idx = 0;
2289 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2290 const char *qval;
2291 int q;
2292 int toklen;
2293
2294 /* try to isolate the token from the optional q-value */
2295 toklen = 0;
2296 while (toklen < ctx.vlen && http_is_token[(unsigned char)*(ctx.line + ctx.val + toklen)])
2297 toklen++;
2298
2299 qval = ctx.line + ctx.val + toklen;
2300 while (1) {
2301 while (qval < ctx.line + ctx.val + ctx.vlen && http_is_lws[(unsigned char)*qval])
2302 qval++;
2303
2304 if (qval >= ctx.line + ctx.val + ctx.vlen || *qval != ';') {
2305 qval = NULL;
2306 break;
2307 }
2308 qval++;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2309
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2310 while (qval < ctx.line + ctx.val + ctx.vlen && http_is_lws[(unsigned char)*qval])
2311 qval++;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2312
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2313 if (qval >= ctx.line + ctx.val + ctx.vlen) {
2314 qval = NULL;
2315 break;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2316 }
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2317 if (strncmp(qval, "q=", MIN(ctx.line + ctx.val + ctx.vlen - qval, 2)) == 0)
2318 break;
2319
2320 while (qval < ctx.line + ctx.val + ctx.vlen && *qval != ';')
2321 qval++;
2322 }
2323
2324 /* 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]2325 q = qval ? parse_qvalue(qval + 2, NULL) : 1000;
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2326
2327 if (q <= best_q)
2328 continue;
2329
2330 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
2331 if (*(ctx.line + ctx.val) == '*' ||
Willy Tarreau615105e2015-03-28 16:40:46 +0100[diff] [blame]2332 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]2333 s->comp_algo = comp_algo;
2334 best_q = q;
2335 break;
2336 }
2337 }
2338 }
2339 }
2340
2341 /* remove all occurrences of the header when "compression offload" is set */
2342 if (s->comp_algo) {
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]2343 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]2344 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2345 ctx.idx = 0;
2346 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
2347 http_remove_header2(msg, &txn->hdr_idx, &ctx);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2348 }
2349 }
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2350 return 1;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2351 }
2352
2353 /* identity is implicit does not require headers */
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]2354 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]2355 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
Willy Tarreau615105e2015-03-28 16:40:46 +0100[diff] [blame]2356 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]2357 s->comp_algo = comp_algo;
2358 return 1;
2359 }
2360 }
2361 }
2362
2363 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2364 return 0;
2365}
2366
2367/*
2368 * Selects a comression algorithm depending of the server response.
2369 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2370int select_compression_response_header(struct stream *s, struct buffer *res)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2371{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]2372 struct http_txn *txn = s->txn;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2373 struct http_msg *msg = &txn->rsp;
2374 struct hdr_ctx ctx;
2375 struct comp_type *comp_type;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2376
2377 /* no common compression algorithm was found in request header */
2378 if (s->comp_algo == NULL)
2379 goto fail;
2380
2381 /* HTTP < 1.1 should not be compressed */
Willy Tarreau72575502013-12-24 14:41:35 +0100[diff] [blame]2382 if (!(msg->flags & HTTP_MSGF_VER_11) || !(txn->req.flags & HTTP_MSGF_VER_11))
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2383 goto fail;
2384
Jesse Hathaway2468d4e2015-03-06 20:16:15 +0000[diff] [blame]2385 /* compress 200,201,202,203 responses only */
2386 if ((txn->status != 200) &&
2387 (txn->status != 201) &&
2388 (txn->status != 202) &&
2389 (txn->status != 203))
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2390 goto fail;
2391
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2392 /* Content-Length is null */
2393 if (!(msg->flags & HTTP_MSGF_TE_CHNK) && msg->body_len == 0)
2394 goto fail;
2395
2396 /* content is already compressed */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2397 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2398 if (http_find_header2("Content-Encoding", 16, res->p, &txn->hdr_idx, &ctx))
2399 goto fail;
2400
Willy Tarreau56e9ffa2013-01-05 16:20:35 +0100[diff] [blame]2401 /* no compression when Cache-Control: no-transform is present in the message */
2402 ctx.idx = 0;
2403 while (http_find_header2("Cache-Control", 13, res->p, &txn->hdr_idx, &ctx)) {
2404 if (word_match(ctx.line + ctx.val, ctx.vlen, "no-transform", 12))
2405 goto fail;
2406 }
2407
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2408 comp_type = NULL;
2409
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2410 /* we don't want to compress multipart content-types, nor content-types that are
2411 * not listed in the "compression type" directive if any. If no content-type was
2412 * found but configuration requires one, we don't compress either. Backend has
2413 * the priority.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2414 */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2415 ctx.idx = 0;
2416 if (http_find_header2("Content-Type", 12, res->p, &txn->hdr_idx, &ctx)) {
2417 if (ctx.vlen >= 9 && strncasecmp("multipart", ctx.line+ctx.val, 9) == 0)
2418 goto fail;
2419
2420 if ((s->be->comp && (comp_type = s->be->comp->types)) ||
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]2421 (strm_fe(s)->comp && (comp_type = strm_fe(s)->comp->types))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2422 for (; comp_type; comp_type = comp_type->next) {
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2423 if (ctx.vlen >= comp_type->name_len &&
2424 strncasecmp(ctx.line+ctx.val, comp_type->name, comp_type->name_len) == 0)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2425 /* this Content-Type should be compressed */
2426 break;
2427 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2428 /* this Content-Type should not be compressed */
2429 if (comp_type == NULL)
2430 goto fail;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2431 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2432 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2433 else { /* no content-type header */
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]2434 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]2435 goto fail; /* a content-type was required */
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2436 }
2437
William Lallemandd85f9172012-11-09 17:05:39 +0100[diff] [blame]2438 /* limit compression rate */
2439 if (global.comp_rate_lim > 0)
2440 if (read_freq_ctr(&global.comp_bps_in) > global.comp_rate_lim)
2441 goto fail;
2442
William Lallemand072a2bf2012-11-20 17:01:01 +0100[diff] [blame]2443 /* limit cpu usage */
2444 if (idle_pct < compress_min_idle)
2445 goto fail;
2446
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2447 /* initialize compression */
William Lallemandf3747832012-11-09 12:33:10 +0100[diff] [blame]2448 if (s->comp_algo->init(&s->comp_ctx, global.tune.comp_maxlevel) < 0)
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2449 goto fail;
2450
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2451 s->flags |= SF_COMP_READY;
William Lallemandec3e3892012-11-12 17:02:18 +0100[diff] [blame]2452
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2453 /* remove Content-Length header */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2454 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2455 if ((msg->flags & HTTP_MSGF_CNT_LEN) && http_find_header2("Content-Length", 14, res->p, &txn->hdr_idx, &ctx))
2456 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2457
2458 /* add Transfer-Encoding header */
2459 if (!(msg->flags & HTTP_MSGF_TE_CHNK))
2460 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, "Transfer-Encoding: chunked", 26);
2461
2462 /*
2463 * Add Content-Encoding header when it's not identity encoding.
2464 * RFC 2616 : Identity encoding: This content-coding is used only in the
2465 * Accept-Encoding header, and SHOULD NOT be used in the Content-Encoding
2466 * header.
2467 */
Willy Tarreau615105e2015-03-28 16:40:46 +0100[diff] [blame]2468 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]2469 trash.len = 18;
2470 memcpy(trash.str, "Content-Encoding: ", trash.len);
Willy Tarreau615105e2015-03-28 16:40:46 +0100[diff] [blame]2471 memcpy(trash.str + trash.len, s->comp_algo->ua_name, s->comp_algo->ua_name_len);
2472 trash.len += s->comp_algo->ua_name_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]2473 trash.str[trash.len] = '\0';
2474 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2475 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2476 return 1;
2477
2478fail:
Willy Tarreaub97b6192012-11-19 14:55:02 +0100[diff] [blame]2479 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2480 return 0;
2481}
2482
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2483void 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]2484{
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]2485 struct proxy *fe = strm_fe(s);
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2486 int tmp = TX_CON_WANT_KAL;
2487
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2488 if (!((fe->options2|s->be->options2) & PR_O2_FAKE_KA)) {
2489 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2490 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN)
2491 tmp = TX_CON_WANT_TUN;
2492
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2493 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2494 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2495 tmp = TX_CON_WANT_TUN;
2496 }
2497
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2498 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2499 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL) {
2500 /* option httpclose + server_close => forceclose */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2501 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2502 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2503 tmp = TX_CON_WANT_CLO;
2504 else
2505 tmp = TX_CON_WANT_SCL;
2506 }
2507
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2508 if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2509 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL)
2510 tmp = TX_CON_WANT_CLO;
2511
2512 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
2513 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
2514
2515 if (!(txn->flags & TX_HDR_CONN_PRS) &&
2516 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) {
2517 /* parse the Connection header and possibly clean it */
2518 int to_del = 0;
2519 if ((msg->flags & HTTP_MSGF_VER_11) ||
2520 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2521 !((fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2522 to_del |= 2; /* remove "keep-alive" */
2523 if (!(msg->flags & HTTP_MSGF_VER_11))
2524 to_del |= 1; /* remove "close" */
2525 http_parse_connection_header(txn, msg, to_del);
2526 }
2527
2528 /* check if client or config asks for explicit close in KAL/SCL */
2529 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
2530 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
2531 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
2532 (!(msg->flags & HTTP_MSGF_VER_11) && !(txn->flags & TX_HDR_CONN_KAL)) || /* no "connection: k-a" in 1.0 */
2533 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2534 fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2535 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
2536}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2537
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2538/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2539 * processing can continue on next analysers, or zero if it either needs more
2540 * data or wants to immediately abort the request (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2541 * 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]2542 * when it has nothing left to do, and may remove any analyser when it wants to
2543 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2544 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2545int http_wait_for_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2546{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2547 /*
2548 * We will parse the partial (or complete) lines.
2549 * We will check the request syntax, and also join multi-line
2550 * headers. An index of all the lines will be elaborated while
2551 * parsing.
2552 *
2553 * For the parsing, we use a 28 states FSM.
2554 *
2555 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2556 * req->buf->p = beginning of request
2557 * req->buf->p + msg->eoh = end of processed headers / start of current one
2558 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2559 * msg->eol = end of current header or line (LF or CRLF)
2560 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2561 *
2562 * 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]2563 * we will set a few fields (txn->meth, sn->flags/SF_REDIRECTABLE).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2564 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2565 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2566 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2567
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2568 int cur_idx;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2569 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]2570 struct http_txn *txn = s->txn;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2571 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2572 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2573
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2574 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]2575 now_ms, __FUNCTION__,
2576 s,
2577 req,
2578 req->rex, req->wex,
2579 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2580 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2581 req->analysers);
2582
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2583 /* we're speaking HTTP here, so let's speak HTTP to the client */
2584 s->srv_error = http_return_srv_error;
2585
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2586 /* There's a protected area at the end of the buffer for rewriting
2587 * purposes. We don't want to start to parse the request if the
2588 * protected area is affected, because we may have to move processed
2589 * data later, which is much more complicated.
2590 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2591 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2592 if (txn->flags & TX_NOT_FIRST) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]2593 if (unlikely(!channel_is_rewritable(req))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2594 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2595 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2596 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2597 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2598 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]2599 req->flags |= CF_WAKE_WRITE;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2600 return 0;
2601 }
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2602 if (unlikely(bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2603 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite))
2604 buffer_slow_realign(req->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2605 }
2606
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2607 /* Note that we have the same problem with the response ; we
2608 * may want to send a redirect, error or anything which requires
2609 * some spare space. So we'll ensure that we have at least
2610 * maxrewrite bytes available in the response buffer before
2611 * processing that one. This will only affect pipelined
2612 * keep-alive requests.
2613 */
2614 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2615 unlikely(!channel_is_rewritable(&s->res) ||
2616 bi_end(s->res.buf) < b_ptr(s->res.buf, txn->rsp.next) ||
2617 bi_end(s->res.buf) > s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)) {
2618 if (s->res.buf->o) {
2619 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]2620 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2621 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2622 channel_dont_connect(req);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2623 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
2624 s->res.flags |= CF_WAKE_WRITE;
2625 s->res.analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2626 return 0;
2627 }
2628 }
2629
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2630 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2631 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2632 }
2633
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2634 /* 1: we might have to print this header in debug mode */
2635 if (unlikely((global.mode & MODE_DEBUG) &&
2636 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]2637 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2638 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2639
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2640 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2641 /* this is a bit complex : in case of error on the request line,
2642 * we know that rq.l is still zero, so we display only the part
2643 * up to the end of the line (truncated by debug_hdr).
2644 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2645 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2646 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2647
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2648 sol += hdr_idx_first_pos(&txn->hdr_idx);
2649 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2650
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2651 while (cur_idx) {
2652 eol = sol + txn->hdr_idx.v[cur_idx].len;
2653 debug_hdr("clihdr", s, sol, eol);
2654 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2655 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2656 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2657 }
2658
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2659
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2660 /*
2661 * Now we quickly check if we have found a full valid request.
2662 * If not so, we check the FD and buffer states before leaving.
2663 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2664 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2665 * requests are checked first. When waiting for a second request
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2666 * on a keep-alive stream, if we encounter and error, close, t/o,
2667 * we note the error in the stream flags but don't set any state.
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2668 * Since the error will be noted there, it will not be counted by
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2669 * process_stream() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2670 * Last, we may increase some tracked counters' http request errors on
2671 * the cases that are deliberately the client's fault. For instance,
2672 * a timeout or connection reset is not counted as an error. However
2673 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2674 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2675
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2676 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2677 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2678 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2679 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2680 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2681 stream_inc_http_req_ctr(s);
2682 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2683 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2684 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2685 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2686
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2687 /* 1: Since we are in header mode, if there's no space
2688 * left for headers, we won't be able to free more
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2689 * later, so the stream will never terminate. We
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2690 * must terminate it now.
2691 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2692 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2693 /* FIXME: check if URI is set and return Status
2694 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2695 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2696 stream_inc_http_req_ctr(s);
2697 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2698 proxy_inc_fe_req_ctr(sess->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2699 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2700 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2701 goto return_bad_req;
2702 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2703
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2704 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2705 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2706 if (!(s->flags & SF_ERR_MASK))
2707 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2708
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2709 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2710 goto failed_keep_alive;
2711
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2712 if (sess->fe->options & PR_O_IGNORE_PRB)
2713 goto failed_keep_alive;
2714
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2715 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2716 if (msg->err_pos >= 0) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2717 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]2718 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2719 }
2720
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2721 txn->status = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]2722 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2723 msg->msg_state = HTTP_MSG_ERROR;
2724 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2725
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2726 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2727 proxy_inc_fe_req_ctr(sess->fe);
2728 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2729 if (sess->listener->counters)
2730 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2731
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2732 if (!(s->flags & SF_FINST_MASK))
2733 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2734 return 0;
2735 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2736
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2737 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2738 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]2739 if (!(s->flags & SF_ERR_MASK))
2740 s->flags |= SF_ERR_CLITO;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2741
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2742 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2743 goto failed_keep_alive;
2744
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2745 if (sess->fe->options & PR_O_IGNORE_PRB)
2746 goto failed_keep_alive;
2747
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2748 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2749 if (msg->err_pos >= 0) {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2750 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]2751 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2752 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2753 txn->status = 408;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]2754 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2755 msg->msg_state = HTTP_MSG_ERROR;
2756 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2757
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2758 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2759 proxy_inc_fe_req_ctr(sess->fe);
2760 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2761 if (sess->listener->counters)
2762 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2763
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2764 if (!(s->flags & SF_FINST_MASK))
2765 s->flags |= SF_FINST_R;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2766 return 0;
2767 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2768
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2769 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2770 else if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2771 if (!(s->flags & SF_ERR_MASK))
2772 s->flags |= SF_ERR_CLICL;
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2773
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2774 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2775 goto failed_keep_alive;
2776
Willy Tarreau0f228a02015-05-01 15:37:53 +0200[diff] [blame]2777 if (sess->fe->options & PR_O_IGNORE_PRB)
2778 goto failed_keep_alive;
2779
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2780 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2781 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]2782 txn->status = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]2783 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2784 msg->msg_state = HTTP_MSG_ERROR;
2785 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2786
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2787 stream_inc_http_err_ctr(s);
2788 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2789 proxy_inc_fe_req_ctr(sess->fe);
2790 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]2791 if (sess->listener->counters)
2792 sess->listener->counters->failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2793
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2794 if (!(s->flags & SF_FINST_MASK))
2795 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2796 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2797 }
2798
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2799 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2800 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2801 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2802#ifdef TCP_QUICKACK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2803 if (sess->listener->options & LI_O_NOQUICKACK && req->buf->i &&
2804 objt_conn(sess->origin) && conn_ctrl_ready(__objt_conn(sess->origin))) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2805 /* We need more data, we have to re-enable quick-ack in case we
2806 * previously disabled it, otherwise we might cause the client
2807 * to delay next data.
2808 */
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]2809 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]2810 }
2811#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2812
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2813 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2814 /* If the client starts to talk, let's fall back to
2815 * request timeout processing.
2816 */
2817 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2818 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2819 }
2820
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2821 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2822 if (!tick_isset(req->analyse_exp)) {
2823 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2824 (txn->flags & TX_WAIT_NEXT_RQ) &&
2825 tick_isset(s->be->timeout.httpka))
2826 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2827 else
2828 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2829 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2830
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2831 /* we're not ready yet */
2832 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2833
2834 failed_keep_alive:
2835 /* Here we process low-level errors for keep-alive requests. In
2836 * short, if the request is not the first one and it experiences
2837 * a timeout, read error or shutdown, we just silently close so
2838 * that the client can try again.
2839 */
2840 txn->status = 0;
2841 msg->msg_state = HTTP_MSG_RQBEFORE;
2842 req->analysers = 0;
2843 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]2844 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]2845 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]2846 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2847 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2848 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2849
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2850 /* OK now we have a complete HTTP request with indexed headers. Let's
2851 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2852 * 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]2853 * 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]2854 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2855 * byte after the last LF. msg->sov points to the first byte of data.
2856 * msg->eol cannot be trusted because it may have been left uninitialized
2857 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2858 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2859
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]2860 stream_inc_http_req_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2861 proxy_inc_fe_req_ctr(sess->fe); /* one more valid request for this FE */
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2862
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2863 if (txn->flags & TX_WAIT_NEXT_RQ) {
2864 /* kill the pending keep-alive timeout */
2865 txn->flags &= ~TX_WAIT_NEXT_RQ;
2866 req->analyse_exp = TICK_ETERNITY;
2867 }
2868
2869
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2870 /* Maybe we found in invalid header name while we were configured not
2871 * to block on that, so we have to capture it now.
2872 */
2873 if (unlikely(msg->err_pos >= 0))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2874 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]2875
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2876 /*
2877 * 1: identify the method
2878 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2879 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2880
2881 /* we can make use of server redirect on GET and HEAD */
2882 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2883 s->flags |= SF_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2884
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2885 /*
2886 * 2: check if the URI matches the monitor_uri.
2887 * We have to do this for every request which gets in, because
2888 * the monitor-uri is defined by the frontend.
2889 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2890 if (unlikely((sess->fe->monitor_uri_len != 0) &&
2891 (sess->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2892 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2893 sess->fe->monitor_uri,
2894 sess->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2895 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2896 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2897 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2898 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2899
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2900 s->flags |= SF_MONITOR;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2901 sess->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2902
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2903 /* Check if we want to fail this monitor request or not */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2904 list_for_each_entry(cond, &sess->fe->mon_fail_cond, list) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]2905 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]2906
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2907 ret = acl_pass(ret);
2908 if (cond->pol == ACL_COND_UNLESS)
2909 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2910
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2911 if (ret) {
2912 /* we fail this request, let's return 503 service unavail */
2913 txn->status = 503;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]2914 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_503));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2915 if (!(s->flags & SF_ERR_MASK))
2916 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2917 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2918 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2919 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2920
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2921 /* nothing to fail, let's reply normaly */
2922 txn->status = 200;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]2923 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_200));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]2924 if (!(s->flags & SF_ERR_MASK))
2925 s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2926 goto return_prx_cond;
2927 }
2928
2929 /*
2930 * 3: Maybe we have to copy the original REQURI for the logs ?
2931 * Note: we cannot log anymore if the request has been
2932 * classified as invalid.
2933 */
2934 if (unlikely(s->logs.logwait & LW_REQ)) {
2935 /* we have a complete HTTP request that we must log */
2936 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2937 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2938
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2939 if (urilen >= REQURI_LEN)
2940 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2941 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2942 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2943
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2944 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2945 s->do_log(s);
2946 } else {
2947 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2948 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2949 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2950
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]2951 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
2952 * exactly one digit "." one digit. This check may be disabled using
2953 * option accept-invalid-http-request.
2954 */
2955 if (!(sess->fe->options2 & PR_O2_REQBUG_OK)) {
2956 if (msg->sl.rq.v_l != 8) {
2957 msg->err_pos = msg->sl.rq.v;
2958 goto return_bad_req;
2959 }
2960
2961 if (req->buf->p[msg->sl.rq.v + 4] != '/' ||
2962 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 5]) ||
2963 req->buf->p[msg->sl.rq.v + 6] != '.' ||
2964 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 7])) {
2965 msg->err_pos = msg->sl.rq.v + 4;
2966 goto return_bad_req;
2967 }
2968 }
Willy Tarreau13317662015-05-01 13:47:08 +0200[diff] [blame]2969 else {
2970 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
2971 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
2972 goto return_bad_req;
2973 }
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]2974
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2975 /* ... and check if the request is HTTP/1.1 or above */
2976 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2977 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2978 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2979 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2980 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2981
2982 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2983 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]2984
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2985 /* if the frontend has "option http-use-proxy-header", we'll check if
2986 * we have what looks like a proxied connection instead of a connection,
2987 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2988 * Note that this is *not* RFC-compliant, however browsers and proxies
2989 * happen to do that despite being non-standard :-(
2990 * We consider that a request not beginning with either '/' or '*' is
2991 * a proxied connection, which covers both "scheme://location" and
2992 * CONNECT ip:port.
2993 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]2994 if ((sess->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2995 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2996 txn->flags |= TX_USE_PX_CONN;
2997
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2998 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2999 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3000
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3001 /* 5: we may need to capture headers */
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]3002 if (unlikely((s->logs.logwait & LW_REQHDR) && s->req_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3003 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]3004 s->req_cap, sess->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3005
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3006 /* 6: determine the transfer-length according to RFC2616 #4.4, updated
3007 * by RFC7230#3.3.3 :
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3008 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3009 * The length of a message body is determined by one of the following
3010 * (in order of precedence):
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3011 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3012 * 1. Any response to a HEAD request and any response with a 1xx
3013 * (Informational), 204 (No Content), or 304 (Not Modified) status
3014 * code is always terminated by the first empty line after the
3015 * header fields, regardless of the header fields present in the
3016 * message, and thus cannot contain a message body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3017 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3018 * 2. Any 2xx (Successful) response to a CONNECT request implies that
3019 * the connection will become a tunnel immediately after the empty
3020 * line that concludes the header fields. A client MUST ignore any
3021 * Content-Length or Transfer-Encoding header fields received in
3022 * such a message.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3023 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]3024 * 3. If a Transfer-Encoding header field is present and the chunked
3025 * transfer coding (Section 4.1) is the final encoding, the message
3026 * body length is determined by reading and decoding the chunked
3027 * data until the transfer coding indicates the data is complete.
3028 *
3029 * If a Transfer-Encoding header field is present in a response and
3030 * the chunked transfer coding is not the final encoding, the
3031 * message body length is determined by reading the connection until
3032 * it is closed by the server. If a Transfer-Encoding header field
3033 * is present in a request and the chunked transfer coding is not
3034 * the final encoding, the message body length cannot be determined
3035 * reliably; the server MUST respond with the 400 (Bad Request)
3036 * status code and then close the connection.
3037 *
3038 * If a message is received with both a Transfer-Encoding and a
3039 * Content-Length header field, the Transfer-Encoding overrides the
3040 * Content-Length. Such a message might indicate an attempt to
3041 * perform request smuggling (Section 9.5) or response splitting
3042 * (Section 9.4) and ought to be handled as an error. A sender MUST
3043 * remove the received Content-Length field prior to forwarding such
3044 * a message downstream.
3045 *
3046 * 4. If a message is received without Transfer-Encoding and with
3047 * either multiple Content-Length header fields having differing
3048 * field-values or a single Content-Length header field having an
3049 * invalid value, then the message framing is invalid and the
3050 * recipient MUST treat it as an unrecoverable error. If this is a
3051 * request message, the server MUST respond with a 400 (Bad Request)
3052 * status code and then close the connection. If this is a response
3053 * message received by a proxy, the proxy MUST close the connection
3054 * to the server, discard the received response, and send a 502 (Bad
3055 * Gateway) response to the client. If this is a response message
3056 * received by a user agent, the user agent MUST close the
3057 * connection to the server and discard the received response.
3058 *
3059 * 5. If a valid Content-Length header field is present without
3060 * Transfer-Encoding, its decimal value defines the expected message
3061 * body length in octets. If the sender closes the connection or
3062 * the recipient times out before the indicated number of octets are
3063 * received, the recipient MUST consider the message to be
3064 * incomplete and close the connection.
3065 *
3066 * 6. If this is a request message and none of the above are true, then
3067 * the message body length is zero (no message body is present).
3068 *
3069 * 7. Otherwise, this is a response message without a declared message
3070 * body length, so the message body length is determined by the
3071 * number of octets received prior to the server closing the
3072 * connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3073 */
3074
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3075 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3076 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]3077 while (http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3078 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3079 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
3080 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]3081 /* chunked not last, return badreq */
3082 goto return_bad_req;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3083 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3084 }
3085
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]3086 /* Chunked requests must have their content-length removed */
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3087 ctx.idx = 0;
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]3088 if (msg->flags & HTTP_MSGF_TE_CHNK) {
3089 while (http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx))
3090 http_remove_header2(msg, &txn->hdr_idx, &ctx);
3091 }
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]3092 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]3093 signed long long cl;
3094
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3095 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3096 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3097 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3098 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3099
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3100 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3101 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3102 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3103 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3104
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3105 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3106 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3107 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3108 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3109
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3110 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3111 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3112 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3113 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3114
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3115 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3116 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3117 }
3118
Willy Tarreau34dfc602015-05-01 10:09:49 +0200[diff] [blame]3119 /* even bodyless requests have a known length */
3120 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3121
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]3122 /* Until set to anything else, the connection mode is set as Keep-Alive. It will
3123 * only change if both the request and the config reference something else.
3124 * Option httpclose by itself sets tunnel mode where headers are mangled.
3125 * However, if another mode is set, it will affect it (eg: server-close/
3126 * keep-alive + httpclose = close). Note that we avoid to redo the same work
3127 * if FE and BE have the same settings (common). The method consists in
3128 * checking if options changed between the two calls (implying that either
3129 * one is non-null, or one of them is non-null and we are there for the first
3130 * time.
3131 */
3132 if (!(txn->flags & TX_HDR_CONN_PRS) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3133 ((sess->fe->options & PR_O_HTTP_MODE) != (s->be->options & PR_O_HTTP_MODE)))
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]3134 http_adjust_conn_mode(s, txn, msg);
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]3135
Willy Tarreau9fbe18e2015-05-01 22:42:08 +0200[diff] [blame]3136 /* we may have to wait for the request's body */
3137 if ((s->be->options & PR_O_WREQ_BODY) &&
3138 (msg->body_len || (msg->flags & HTTP_MSGF_TE_CHNK)))
3139 req->analysers |= AN_REQ_HTTP_BODY;
3140
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3141 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3142 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3143 req->analyse_exp = TICK_ETERNITY;
3144 return 1;
3145
3146 return_bad_req:
3147 /* We centralize bad requests processing here */
3148 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3149 /* we detected a parsing error. We want to archive this request
3150 * in the dedicated proxy area for later troubleshooting.
3151 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3152 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]3153 }
3154
3155 txn->req.msg_state = HTTP_MSG_ERROR;
3156 txn->status = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]3157 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3158
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3159 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]3160 if (sess->listener->counters)
3161 sess->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3162
3163 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]3164 if (!(s->flags & SF_ERR_MASK))
3165 s->flags |= SF_ERR_PRXCOND;
3166 if (!(s->flags & SF_FINST_MASK))
3167 s->flags |= SF_FINST_R;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3168
3169 req->analysers = 0;
3170 req->analyse_exp = TICK_ETERNITY;
3171 return 0;
3172}
3173
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]3174
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3175/* This function prepares an applet to handle the stats. It can deal with the
3176 * "100-continue" expectation, check that admin rules are met for POST requests,
3177 * and program a response message if something was unexpected. It cannot fail
3178 * 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]3179 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3180 * s->target which is supposed to already point to the stats applet. The caller
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3181 * is expected to have already assigned an appctx to the stream.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3182 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3183int http_handle_stats(struct stream *s, struct channel *req)
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3184{
3185 struct stats_admin_rule *stats_admin_rule;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]3186 struct stream_interface *si = &s->si[1];
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3187 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3188 struct http_txn *txn = s->txn;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3189 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3190 struct uri_auth *uri_auth = s->be->uri_auth;
3191 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3192 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3193
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3194 appctx = si_appctx(si);
3195 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
3196 appctx->st1 = appctx->st2 = 0;
3197 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
3198 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3199 if ((msg->flags & HTTP_MSGF_VER_11) && (s->txn->meth != HTTP_METH_HEAD))
Willy Tarreauaf3cf702014-04-22 22:19:53 +0200[diff] [blame]3200 appctx->ctx.stats.flags |= STAT_CHUNKED;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3201
3202 uri = msg->chn->buf->p + msg->sl.rq.u;
3203 lookup = uri + uri_auth->uri_len;
3204
3205 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
3206 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3207 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3208 break;
3209 }
3210 }
3211
3212 if (uri_auth->refresh) {
3213 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
3214 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3215 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3216 break;
3217 }
3218 }
3219 }
3220
3221 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
3222 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3223 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3224 break;
3225 }
3226 }
3227
3228 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3229 if (memcmp(h, ";st=", 4) == 0) {
3230 int i;
3231 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3232 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3233 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
3234 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3235 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3236 break;
3237 }
3238 }
3239 break;
3240 }
3241 }
3242
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3243 appctx->ctx.stats.scope_str = 0;
3244 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3245 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3246 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
3247 int itx = 0;
3248 const char *h2;
3249 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
3250 const char *err;
3251
3252 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
3253 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3254 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3255 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
3256 itx++;
3257 h++;
3258 }
3259
3260 if (itx > STAT_SCOPE_TXT_MAXLEN)
3261 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3262 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3263
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3264 /* 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]3265 memcpy(scope_txt, h2, itx);
3266 scope_txt[itx] = '\0';
3267 err = invalid_char(scope_txt);
3268 if (err) {
3269 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3270 appctx->ctx.stats.scope_str = 0;
3271 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3272 }
3273 break;
3274 }
3275 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3276
3277 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3278 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3279 int ret = 1;
3280
3281 if (stats_admin_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3282 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]3283 ret = acl_pass(ret);
3284 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3285 ret = !ret;
3286 }
3287
3288 if (ret) {
3289 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3290 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3291 break;
3292 }
3293 }
3294
3295 /* Was the status page requested with a POST ? */
Willy Tarreaub8cdf522015-05-29 01:09:15 +0200[diff] [blame]3296 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3297 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreaucfe7fdd2014-04-26 22:08:32 +0200[diff] [blame]3298 /* we'll need the request body, possibly after sending 100-continue */
Willy Tarreaub8cdf522015-05-29 01:09:15 +0200[diff] [blame]3299 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE)
3300 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3301 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3302 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3303 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3304 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
3305 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]3306 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3307 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3308 else {
3309 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3310 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3311 }
3312
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3313 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3314 return 1;
3315}
3316
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3317/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
3318 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
3319 */
Thierry FOURNIER7fe75e02015-03-16 12:03:44 +0100[diff] [blame]3320void inet_set_tos(int fd, struct sockaddr_storage from, int tos)
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3321{
3322#ifdef IP_TOS
3323 if (from.ss_family == AF_INET)
3324 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3325#endif
3326#ifdef IPV6_TCLASS
3327 if (from.ss_family == AF_INET6) {
3328 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)&from)->sin6_addr))
3329 /* v4-mapped addresses need IP_TOS */
3330 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3331 else
3332 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
3333 }
3334#endif
3335}
3336
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3337int http_transform_header_str(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3338 const char* name, unsigned int name_len,
3339 const char *str, struct my_regex *re,
3340 int action)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3341{
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3342 struct hdr_ctx ctx;
3343 char *buf = msg->chn->buf->p;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3344 struct hdr_idx *idx = &s->txn->hdr_idx;
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3345 int (*http_find_hdr_func)(const char *name, int len, char *sol,
3346 struct hdr_idx *idx, struct hdr_ctx *ctx);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3347 struct chunk *output = get_trash_chunk();
3348
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3349 ctx.idx = 0;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3350
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3351 /* Choose the header browsing function. */
3352 switch (action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3353 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3354 http_find_hdr_func = http_find_header2;
3355 break;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3356 case ACT_HTTP_REPLACE_HDR:
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3357 http_find_hdr_func = http_find_full_header2;
3358 break;
3359 default: /* impossible */
3360 return -1;
3361 }
3362
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3363 while (http_find_hdr_func(name, name_len, buf, idx, &ctx)) {
3364 struct hdr_idx_elem *hdr = idx->v + ctx.idx;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3365 int delta;
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3366 char *val = ctx.line + ctx.val;
3367 char* val_end = val + ctx.vlen;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3368
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3369 if (!regex_exec_match2(re, val, val_end-val, MAX_MATCH, pmatch, 0))
3370 continue;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3371
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3372 output->len = exp_replace(output->str, output->size, val, str, pmatch);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3373 if (output->len == -1)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3374 return -1;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3375
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3376 delta = buffer_replace2(msg->chn->buf, val, val_end, output->str, output->len);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3377
3378 hdr->len += delta;
3379 http_msg_move_end(msg, delta);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3380
3381 /* Adjust the length of the current value of the index. */
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3382 ctx.vlen += delta;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3383 }
3384
3385 return 0;
3386}
3387
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3388static int http_transform_header(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3389 const char* name, unsigned int name_len,
3390 struct list *fmt, struct my_regex *re,
3391 int action)
3392{
3393 struct chunk *replace = get_trash_chunk();
3394
3395 replace->len = build_logline(s, replace->str, replace->size, fmt);
3396 if (replace->len >= replace->size - 1)
3397 return -1;
3398
3399 return http_transform_header_str(s, msg, name, name_len, replace->str, re, action);
3400}
3401
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3402/* Executes the http-request rules <rules> for stream <s>, proxy <px> and
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3403 * transaction <txn>. Returns the verdict of the first rule that prevents
3404 * further processing of the request (auth, deny, ...), and defaults to
3405 * HTTP_RULE_RES_STOP if it executed all rules or stopped on an allow, or
3406 * HTTP_RULE_RES_CONT if the last rule was reached. It may set the TX_CLTARPIT
3407 * on txn->flags if it encounters a tarpit rule.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3408 */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3409enum rule_result
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3410http_req_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3411{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3412 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3413 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3414 struct connection *cli_conn;
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]3415 struct act_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3416 struct hdr_ctx ctx;
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3417 const char *auth_realm;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3418
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3419 /* If "the current_rule_list" match the executed rule list, we are in
3420 * resume condition. If a resume is needed it is always in the action
3421 * and never in the ACL or converters. In this case, we initialise the
3422 * current rule, and go to the action execution point.
3423 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3424 if (s->current_rule) {
3425 rule = s->current_rule;
3426 s->current_rule = NULL;
3427 if (s->current_rule_list == rules)
3428 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3429 }
3430 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3431
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3432 list_for_each_entry(rule, rules, list) {
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3433
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3434 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3435 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3436 int ret;
3437
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3438 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]3439 ret = acl_pass(ret);
3440
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3441 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3442 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3443
3444 if (!ret) /* condition not matched */
3445 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3446 }
3447
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3448resume_execution:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3449 switch (rule->action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3450 case ACT_ACTION_ALLOW:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3451 return HTTP_RULE_RES_STOP;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3452
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3453 case ACT_ACTION_DENY:
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]3454 txn->rule_deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3455 return HTTP_RULE_RES_DENY;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3456
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3457 case ACT_HTTP_REQ_TARPIT:
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3458 txn->flags |= TX_CLTARPIT;
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 Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3461
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3462 case ACT_HTTP_REQ_AUTH:
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3463 /* Auth might be performed on regular http-req rules as well as on stats */
3464 auth_realm = rule->arg.auth.realm;
3465 if (!auth_realm) {
3466 if (px->uri_auth && rules == &px->uri_auth->http_req_rules)
3467 auth_realm = STATS_DEFAULT_REALM;
3468 else
3469 auth_realm = px->id;
3470 }
3471 /* send 401/407 depending on whether we use a proxy or not. We still
3472 * count one error, because normal browsing won't significantly
3473 * increase the counter but brute force attempts will.
3474 */
3475 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, auth_realm);
3476 txn->status = (txn->flags & TX_USE_PX_CONN) ? 407 : 401;
3477 stream_int_retnclose(&s->si[0], &trash);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3478 stream_inc_http_err_ctr(s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3479 return HTTP_RULE_RES_ABRT;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3480
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3481 case ACT_HTTP_REDIR:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3482 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3483 return HTTP_RULE_RES_BADREQ;
3484 return HTTP_RULE_RES_DONE;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3485
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3486 case ACT_HTTP_SET_NICE:
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3487 s->task->nice = rule->arg.nice;
3488 break;
3489
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3490 case ACT_HTTP_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3491 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3492 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]3493 break;
3494
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3495 case ACT_HTTP_SET_MARK:
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3496#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3497 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3498 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]3499#endif
3500 break;
3501
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3502 case ACT_HTTP_SET_LOGL:
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3503 s->logs.level = rule->arg.loglevel;
3504 break;
3505
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3506 case ACT_HTTP_REPLACE_HDR:
3507 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3508 if (http_transform_header(s, &txn->req, rule->arg.hdr_add.name,
3509 rule->arg.hdr_add.name_len,
3510 &rule->arg.hdr_add.fmt,
3511 &rule->arg.hdr_add.re, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3512 return HTTP_RULE_RES_BADREQ;
3513 break;
3514
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3515 case ACT_HTTP_DEL_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3516 ctx.idx = 0;
3517 /* remove all occurrences of the header */
3518 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3519 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3520 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3521 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3522 break;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3523
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3524 case ACT_HTTP_SET_HDR:
3525 case ACT_HTTP_ADD_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3526 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3527 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3528 trash.len = rule->arg.hdr_add.name_len;
3529 trash.str[trash.len++] = ':';
3530 trash.str[trash.len++] = ' ';
3531 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]3532
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3533 if (rule->action == ACT_HTTP_SET_HDR) {
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3534 /* remove all occurrences of the header */
3535 ctx.idx = 0;
3536 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3537 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3538 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
3539 }
3540 }
3541
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3542 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3543 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3544
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3545 case ACT_HTTP_DEL_ACL:
3546 case ACT_HTTP_DEL_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3547 struct pat_ref *ref;
3548 char *key;
3549 int len;
3550
3551 /* collect reference */
3552 ref = pat_ref_lookup(rule->arg.map.ref);
3553 if (!ref)
3554 continue;
3555
3556 /* collect key */
3557 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3558 key = trash.str;
3559 key[len] = '\0';
3560
3561 /* perform update */
3562 /* returned code: 1=ok, 0=ko */
3563 pat_ref_delete(ref, key);
3564
3565 break;
3566 }
3567
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3568 case ACT_HTTP_ADD_ACL: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3569 struct pat_ref *ref;
3570 char *key;
3571 struct chunk *trash_key;
3572 int len;
3573
3574 trash_key = get_trash_chunk();
3575
3576 /* collect reference */
3577 ref = pat_ref_lookup(rule->arg.map.ref);
3578 if (!ref)
3579 continue;
3580
3581 /* collect key */
3582 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3583 key = trash_key->str;
3584 key[len] = '\0';
3585
3586 /* perform update */
3587 /* add entry only if it does not already exist */
3588 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3589 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3590
3591 break;
3592 }
3593
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3594 case ACT_HTTP_SET_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3595 struct pat_ref *ref;
3596 char *key, *value;
3597 struct chunk *trash_key, *trash_value;
3598 int len;
3599
3600 trash_key = get_trash_chunk();
3601 trash_value = get_trash_chunk();
3602
3603 /* collect reference */
3604 ref = pat_ref_lookup(rule->arg.map.ref);
3605 if (!ref)
3606 continue;
3607
3608 /* collect key */
3609 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3610 key = trash_key->str;
3611 key[len] = '\0';
3612
3613 /* collect value */
3614 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3615 value = trash_value->str;
3616 value[len] = '\0';
3617
3618 /* perform update */
3619 if (pat_ref_find_elt(ref, key) != NULL)
3620 /* update entry if it exists */
3621 pat_ref_set(ref, key, value, NULL);
3622 else
3623 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3624 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3625
3626 break;
3627 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3628
Thierry FOURNIER91f6ba02015-08-06 08:30:11 +0200[diff] [blame]3629 case ACT_ACTION_CONT:
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame^]3630 switch (rule->action_ptr(rule, px, s->sess, s)) {
3631 case ACT_RET_ERR:
3632 case ACT_RET_CONT:
3633 break;
3634 case ACT_RET_YIELD:
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3635 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3636 return HTTP_RULE_RES_YIELD;
3637 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3638 break;
3639
Thierry FOURNIER91f6ba02015-08-06 08:30:11 +0200[diff] [blame]3640 case ACT_ACTION_STOP:
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame^]3641 switch (rule->action_ptr(rule, px, s->sess, s)) {
3642 case ACT_RET_YIELD:
3643 case ACT_RET_ERR:
3644 case ACT_RET_CONT:
3645 return HTTP_RULE_RES_DONE;
3646 }
3647 break;
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3648
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3649 case ACT_ACTION_TRK_SC0 ... ACT_ACTION_TRK_SCMAX:
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3650 /* Note: only the first valid tracking parameter of each
3651 * applies.
3652 */
3653
3654 if (stkctr_entry(&s->stkctr[http_req_trk_idx(rule->action)]) == NULL) {
3655 struct stktable *t;
3656 struct stksess *ts;
3657 struct stktable_key *key;
3658 void *ptr;
3659
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]3660 t = rule->arg.trk_ctr.table.t;
3661 key = stktable_fetch_key(t, s->be, sess, s, SMP_OPT_DIR_REQ | SMP_OPT_FINAL, rule->arg.trk_ctr.expr, NULL);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3662
3663 if (key && (ts = stktable_get_entry(t, key))) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3664 stream_track_stkctr(&s->stkctr[http_req_trk_idx(rule->action)], t, ts);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3665
3666 /* let's count a new HTTP request as it's the first time we do it */
3667 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT);
3668 if (ptr)
3669 stktable_data_cast(ptr, http_req_cnt)++;
3670
3671 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE);
3672 if (ptr)
3673 update_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
3674 t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1);
3675
3676 stkctr_set_flags(&s->stkctr[http_req_trk_idx(rule->action)], STKCTR_TRACK_CONTENT);
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3677 if (sess->fe != s->be)
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3678 stkctr_set_flags(&s->stkctr[http_req_trk_idx(rule->action)], STKCTR_TRACK_BACKEND);
3679 }
3680 }
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3681 break;
3682
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3683 case ACT_HTTP_REQ_SET_SRC:
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3684 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn)) {
3685 struct sample *smp;
3686
Thierry FOURNIERa002dc92015-07-31 08:50:51 +0200[diff] [blame]3687 smp = sample_fetch_as_type(px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL, rule->arg.expr, SMP_T_ADDR);
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3688
3689 if (smp) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]3690 if (smp->data.type == SMP_T_IPV4) {
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3691 ((struct sockaddr_in *)&cli_conn->addr.from)->sin_family = AF_INET;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]3692 ((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr = smp->data.u.ipv4.s_addr;
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3693 ((struct sockaddr_in *)&cli_conn->addr.from)->sin_port = 0;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]3694 } else if (smp->data.type == SMP_T_IPV6) {
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3695 ((struct sockaddr_in6 *)&cli_conn->addr.from)->sin6_family = AF_INET6;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]3696 memcpy(&((struct sockaddr_in6 *)&cli_conn->addr.from)->sin6_addr, &smp->data.u.ipv6, sizeof(struct in6_addr));
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]3697 ((struct sockaddr_in6 *)&cli_conn->addr.from)->sin6_port = 0;
3698 }
3699 }
3700 }
3701 break;
Thierry FOURNIER22e49012015-08-05 19:13:48 +0200[diff] [blame]3702
3703 /* other flags exists, but normaly, they never be matched. */
3704 default:
3705 break;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3706 }
3707 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3708
3709 /* we reached the end of the rules, nothing to report */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3710 return HTTP_RULE_RES_CONT;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3711}
3712
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3713
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3714/* Executes the http-response rules <rules> for stream <s> and proxy <px>. It
3715 * returns one of 5 possible statuses: HTTP_RULE_RES_CONT, HTTP_RULE_RES_STOP,
3716 * HTTP_RULE_RES_DONE, HTTP_RULE_RES_YIELD, or HTTP_RULE_RES_BADREQ. If *CONT
3717 * is returned, the process can continue the evaluation of next rule list. If
3718 * *STOP or *DONE is returned, the process must stop the evaluation. If *BADREQ
3719 * is returned, it means the operation could not be processed and a server error
3720 * must be returned. It may set the TX_SVDENY on txn->flags if it encounters a
3721 * deny rule. If *YIELD is returned, the caller must call again the function
3722 * with the same context.
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3723 */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3724static enum rule_result
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3725http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s)
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3726{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3727 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3728 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3729 struct connection *cli_conn;
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]3730 struct act_rule *rule;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3731 struct hdr_ctx ctx;
3732
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3733 /* If "the current_rule_list" match the executed rule list, we are in
3734 * resume condition. If a resume is needed it is always in the action
3735 * and never in the ACL or converters. In this case, we initialise the
3736 * current rule, and go to the action execution point.
3737 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3738 if (s->current_rule) {
3739 rule = s->current_rule;
3740 s->current_rule = NULL;
3741 if (s->current_rule_list == rules)
3742 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3743 }
3744 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3745
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3746 list_for_each_entry(rule, rules, list) {
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3747
3748 /* check optional condition */
3749 if (rule->cond) {
3750 int ret;
3751
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3752 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]3753 ret = acl_pass(ret);
3754
3755 if (rule->cond->pol == ACL_COND_UNLESS)
3756 ret = !ret;
3757
3758 if (!ret) /* condition not matched */
3759 continue;
3760 }
3761
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3762resume_execution:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3763 switch (rule->action) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3764 case ACT_ACTION_ALLOW:
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3765 return HTTP_RULE_RES_STOP; /* "allow" rules are OK */
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3766
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3767 case ACT_ACTION_DENY:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3768 txn->flags |= TX_SVDENY;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3769 return HTTP_RULE_RES_STOP;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3770
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3771 case ACT_HTTP_SET_NICE:
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3772 s->task->nice = rule->arg.nice;
3773 break;
3774
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3775 case ACT_HTTP_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3776 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3777 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]3778 break;
3779
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3780 case ACT_HTTP_SET_MARK:
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3781#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3782 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3783 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]3784#endif
3785 break;
3786
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3787 case ACT_HTTP_SET_LOGL:
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3788 s->logs.level = rule->arg.loglevel;
3789 break;
3790
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3791 case ACT_HTTP_REPLACE_HDR:
3792 case ACT_HTTP_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3793 if (http_transform_header(s, &txn->rsp, rule->arg.hdr_add.name,
3794 rule->arg.hdr_add.name_len,
3795 &rule->arg.hdr_add.fmt,
3796 &rule->arg.hdr_add.re, rule->action))
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3797 return HTTP_RULE_RES_STOP; /* note: we should report an error here */
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3798 break;
3799
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3800 case ACT_HTTP_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3801 ctx.idx = 0;
3802 /* remove all occurrences of the header */
3803 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3804 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3805 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3806 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3807 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3808
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3809 case ACT_HTTP_SET_HDR:
3810 case ACT_HTTP_ADD_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3811 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3812 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3813 trash.len = rule->arg.hdr_add.name_len;
3814 trash.str[trash.len++] = ':';
3815 trash.str[trash.len++] = ' ';
3816 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]3817
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3818 if (rule->action == ACT_HTTP_SET_HDR) {
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3819 /* remove all occurrences of the header */
3820 ctx.idx = 0;
3821 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3822 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3823 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3824 }
3825 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3826 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3827 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3828
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3829 case ACT_HTTP_DEL_ACL:
3830 case ACT_HTTP_DEL_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3831 struct pat_ref *ref;
3832 char *key;
3833 int len;
3834
3835 /* collect reference */
3836 ref = pat_ref_lookup(rule->arg.map.ref);
3837 if (!ref)
3838 continue;
3839
3840 /* collect key */
3841 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3842 key = trash.str;
3843 key[len] = '\0';
3844
3845 /* perform update */
3846 /* returned code: 1=ok, 0=ko */
3847 pat_ref_delete(ref, key);
3848
3849 break;
3850 }
3851
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3852 case ACT_HTTP_ADD_ACL: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3853 struct pat_ref *ref;
3854 char *key;
3855 struct chunk *trash_key;
3856 int len;
3857
3858 trash_key = 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 /* perform update */
3871 /* check if the entry already exists */
3872 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3873 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3874
3875 break;
3876 }
3877
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3878 case ACT_HTTP_SET_MAP: {
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3879 struct pat_ref *ref;
3880 char *key, *value;
3881 struct chunk *trash_key, *trash_value;
3882 int len;
3883
3884 trash_key = get_trash_chunk();
3885 trash_value = get_trash_chunk();
3886
3887 /* collect reference */
3888 ref = pat_ref_lookup(rule->arg.map.ref);
3889 if (!ref)
3890 continue;
3891
3892 /* collect key */
3893 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3894 key = trash_key->str;
3895 key[len] = '\0';
3896
3897 /* collect value */
3898 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3899 value = trash_value->str;
3900 value[len] = '\0';
3901
3902 /* perform update */
3903 if (pat_ref_find_elt(ref, key) != NULL)
3904 /* update entry if it exists */
3905 pat_ref_set(ref, key, value, NULL);
3906 else
3907 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3908 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3909
3910 break;
3911 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3912
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]3913 case ACT_HTTP_REDIR:
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]3914 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3915 return HTTP_RULE_RES_BADREQ;
3916 return HTTP_RULE_RES_DONE;
3917
Thierry FOURNIER91f6ba02015-08-06 08:30:11 +0200[diff] [blame]3918 case ACT_ACTION_CONT:
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame^]3919 switch (rule->action_ptr(rule, px, s->sess, s)) {
3920 case ACT_RET_ERR:
3921 case ACT_RET_CONT:
3922 break;
3923 case ACT_RET_YIELD:
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3924 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3925 return HTTP_RULE_RES_YIELD;
3926 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3927 break;
3928
Thierry FOURNIER91f6ba02015-08-06 08:30:11 +0200[diff] [blame]3929 case ACT_ACTION_STOP:
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]3930 rule->action_ptr(rule, px, s->sess, s);
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3931 return HTTP_RULE_RES_STOP;
Thierry FOURNIER22e49012015-08-05 19:13:48 +0200[diff] [blame]3932
3933 /* other flags exists, but normaly, they never be matched. */
3934 default:
3935 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3936 }
3937 }
3938
3939 /* we reached the end of the rules, nothing to report */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3940 return HTTP_RULE_RES_CONT;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3941}
3942
3943
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3944/* Perform an HTTP redirect based on the information in <rule>. The function
3945 * returns non-zero on success, or zero in case of a, irrecoverable error such
3946 * as too large a request to build a valid response.
3947 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3948static 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]3949{
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3950 struct http_msg *req = &txn->req;
3951 struct http_msg *res = &txn->rsp;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3952 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3953 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3954
3955 /* build redirect message */
3956 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3957 case 308:
3958 msg_fmt = HTTP_308;
3959 break;
3960 case 307:
3961 msg_fmt = HTTP_307;
3962 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3963 case 303:
3964 msg_fmt = HTTP_303;
3965 break;
3966 case 301:
3967 msg_fmt = HTTP_301;
3968 break;
3969 case 302:
3970 default:
3971 msg_fmt = HTTP_302;
3972 break;
3973 }
3974
3975 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3976 return 0;
3977
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3978 location = trash.str + trash.len;
3979
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3980 switch(rule->type) {
3981 case REDIRECT_TYPE_SCHEME: {
3982 const char *path;
3983 const char *host;
3984 struct hdr_ctx ctx;
3985 int pathlen;
3986 int hostlen;
3987
3988 host = "";
3989 hostlen = 0;
3990 ctx.idx = 0;
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3991 if (http_find_header2("Host", 4, req->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3992 host = ctx.line + ctx.val;
3993 hostlen = ctx.vlen;
3994 }
3995
3996 path = http_get_path(txn);
3997 /* build message using path */
3998 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3999 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]4000 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
4001 int qs = 0;
4002 while (qs < pathlen) {
4003 if (path[qs] == '?') {
4004 pathlen = qs;
4005 break;
4006 }
4007 qs++;
4008 }
4009 }
4010 } else {
4011 path = "/";
4012 pathlen = 1;
4013 }
4014
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4015 if (rule->rdr_str) { /* this is an old "redirect" rule */
4016 /* check if we can add scheme + "://" + host + path */
4017 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
4018 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4019
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4020 /* add scheme */
4021 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
4022 trash.len += rule->rdr_len;
4023 }
4024 else {
4025 /* add scheme with executing log format */
4026 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]4027
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4028 /* check if we can add scheme + "://" + host + path */
4029 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
4030 return 0;
4031 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4032 /* add "://" */
4033 memcpy(trash.str + trash.len, "://", 3);
4034 trash.len += 3;
4035
4036 /* add host */
4037 memcpy(trash.str + trash.len, host, hostlen);
4038 trash.len += hostlen;
4039
4040 /* add path */
4041 memcpy(trash.str + trash.len, path, pathlen);
4042 trash.len += pathlen;
4043
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4044 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4045 if (trash.len && trash.str[trash.len - 1] != '/' &&
4046 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
4047 if (trash.len > trash.size - 5)
4048 return 0;
4049 trash.str[trash.len] = '/';
4050 trash.len++;
4051 }
4052
4053 break;
4054 }
4055 case REDIRECT_TYPE_PREFIX: {
4056 const char *path;
4057 int pathlen;
4058
4059 path = http_get_path(txn);
4060 /* build message using path */
4061 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4062 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]4063 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
4064 int qs = 0;
4065 while (qs < pathlen) {
4066 if (path[qs] == '?') {
4067 pathlen = qs;
4068 break;
4069 }
4070 qs++;
4071 }
4072 }
4073 } else {
4074 path = "/";
4075 pathlen = 1;
4076 }
4077
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4078 if (rule->rdr_str) { /* this is an old "redirect" rule */
4079 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
4080 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4081
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4082 /* add prefix. Note that if prefix == "/", we don't want to
4083 * add anything, otherwise it makes it hard for the user to
4084 * configure a self-redirection.
4085 */
4086 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
4087 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
4088 trash.len += rule->rdr_len;
4089 }
4090 }
4091 else {
4092 /* add prefix with executing log format */
4093 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
4094
4095 /* Check length */
4096 if (trash.len + pathlen > trash.size - 4)
4097 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4098 }
4099
4100 /* add path */
4101 memcpy(trash.str + trash.len, path, pathlen);
4102 trash.len += pathlen;
4103
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4104 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4105 if (trash.len && trash.str[trash.len - 1] != '/' &&
4106 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
4107 if (trash.len > trash.size - 5)
4108 return 0;
4109 trash.str[trash.len] = '/';
4110 trash.len++;
4111 }
4112
4113 break;
4114 }
4115 case REDIRECT_TYPE_LOCATION:
4116 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4117 if (rule->rdr_str) { /* this is an old "redirect" rule */
4118 if (trash.len + rule->rdr_len > trash.size - 4)
4119 return 0;
4120
4121 /* add location */
4122 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
4123 trash.len += rule->rdr_len;
4124 }
4125 else {
4126 /* add location with executing log format */
4127 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]4128
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4129 /* Check left length */
4130 if (trash.len > trash.size - 4)
4131 return 0;
4132 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4133 break;
4134 }
4135
4136 if (rule->cookie_len) {
4137 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
4138 trash.len += 14;
4139 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
4140 trash.len += rule->cookie_len;
4141 memcpy(trash.str + trash.len, "\r\n", 2);
4142 trash.len += 2;
4143 }
4144
4145 /* add end of headers and the keep-alive/close status.
4146 * We may choose to set keep-alive if the Location begins
4147 * with a slash, because the client will come back to the
4148 * same server.
4149 */
4150 txn->status = rule->code;
4151 /* let's log the request time */
4152 s->logs.tv_request = now;
4153
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4154 if (*location == '/' &&
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4155 (req->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau2de8a502015-05-28 17:23:54 +0200[diff] [blame]4156 ((!(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]4157 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
4158 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
4159 /* keep-alive possible */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4160 if (!(req->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4161 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4162 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
4163 trash.len += 30;
4164 } else {
4165 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
4166 trash.len += 24;
4167 }
4168 }
4169 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
4170 trash.len += 4;
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4171 bo_inject(res->chn, trash.str, trash.len);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4172 /* "eat" the request */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4173 bi_fast_delete(req->chn->buf, req->sov);
4174 req->next -= req->sov;
4175 req->sov = 0;
4176 s->req.analysers = AN_REQ_HTTP_XFER_BODY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4177 s->res.analysers = AN_RES_HTTP_XFER_BODY;
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4178 req->msg_state = HTTP_MSG_CLOSED;
4179 res->msg_state = HTTP_MSG_DONE;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]4180 /* Trim any possible response */
4181 res->chn->buf->i = 0;
4182 res->next = res->sov = 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4183 } else {
4184 /* keep-alive not possible */
4185 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4186 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
4187 trash.len += 29;
4188 } else {
4189 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
4190 trash.len += 23;
4191 }
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4192 stream_int_retnclose(&s->si[0], &trash);
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4193 req->chn->analysers = 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4194 }
4195
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4196 if (!(s->flags & SF_ERR_MASK))
4197 s->flags |= SF_ERR_LOCAL;
4198 if (!(s->flags & SF_FINST_MASK))
4199 s->flags |= SF_FINST_R;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4200
4201 return 1;
4202}
4203
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4204/* This stream analyser runs all HTTP request processing which is common to
4205 * frontends and backends, which means blocking ACLs, filters, connection-close,
4206 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4207 * 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]4208 * either needs more data or wants to immediately abort the request (eg: deny,
4209 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4210 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4211int 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]4212{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4213 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4214 struct http_txn *txn = s->txn;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4215 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4216 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]4217 struct cond_wordlist *wl;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4218 enum rule_result verdict;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4219
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4220 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4221 /* we need more data */
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4222 goto return_prx_yield;
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4223 }
4224
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4225 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]4226 now_ms, __FUNCTION__,
4227 s,
4228 req,
4229 req->rex, req->wex,
4230 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4231 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4232 req->analysers);
4233
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4234 /* just in case we have some per-backend tracking */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4235 stream_inc_be_http_req_ctr(s);
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4236
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4237 /* evaluate http-request rules */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4238 if (!LIST_ISEMPTY(&px->http_req_rules)) {
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]4239 verdict = http_req_get_intercept_rule(px, &px->http_req_rules, s);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]4240
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4241 switch (verdict) {
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4242 case HTTP_RULE_RES_YIELD: /* some data miss, call the function later. */
4243 goto return_prx_yield;
4244
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4245 case HTTP_RULE_RES_CONT:
4246 case HTTP_RULE_RES_STOP: /* nothing to do */
4247 break;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4248
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4249 case HTTP_RULE_RES_DENY: /* deny or tarpit */
4250 if (txn->flags & TX_CLTARPIT)
4251 goto tarpit;
4252 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4253
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4254 case HTTP_RULE_RES_ABRT: /* abort request, response already sent. Eg: auth */
4255 goto return_prx_cond;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4256
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4257 case HTTP_RULE_RES_DONE: /* OK, but terminate request processing (eg: redirect) */
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4258 goto done;
4259
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4260 case HTTP_RULE_RES_BADREQ: /* failed with a bad request */
4261 goto return_bad_req;
4262 }
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4263 }
4264
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4265 /* OK at this stage, we know that the request was accepted according to
4266 * the http-request rules, we can check for the stats. Note that the
4267 * URI is detected *before* the req* rules in order not to be affected
4268 * by a possible reqrep, while they are processed *after* so that a
4269 * reqdeny can still block them. This clearly needs to change in 1.6!
4270 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4271 if (stats_check_uri(&s->si[1], txn, px)) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4272 s->target = &http_stats_applet.obj_type;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4273 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target)))) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4274 txn->status = 500;
4275 s->logs.tv_request = now;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4276 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]4277
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4278 if (!(s->flags & SF_ERR_MASK))
4279 s->flags |= SF_ERR_RESOURCE;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4280 goto return_prx_cond;
4281 }
4282
4283 /* parse the whole stats request and extract the relevant information */
4284 http_handle_stats(s, req);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]4285 verdict = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4286 /* not all actions implemented: deny, allow, auth */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4287
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4288 if (verdict == HTTP_RULE_RES_DENY) /* stats http-request deny */
4289 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4290
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4291 if (verdict == HTTP_RULE_RES_ABRT) /* stats auth / stats http-request auth */
4292 goto return_prx_cond;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]4293 }
4294
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4295 /* evaluate the req* rules except reqadd */
4296 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]4297 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4298 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4299
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4300 if (txn->flags & TX_CLDENY)
4301 goto deny;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]4302
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4303 if (txn->flags & TX_CLTARPIT)
4304 goto tarpit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4305 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4306
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4307 /* add request headers from the rule sets in the same order */
4308 list_for_each_entry(wl, &px->req_add, list) {
4309 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4310 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]4311 ret = acl_pass(ret);
4312 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
4313 ret = !ret;
4314 if (!ret)
4315 continue;
4316 }
4317
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4318 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4319 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]4320 }
4321
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4322
4323 /* Proceed with the stats now. */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]4324 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]4325 /* process the stats request now */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4326 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
4327 sess->fe->fe_counters.intercepted_req++;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4328
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4329 if (!(s->flags & SF_ERR_MASK)) // this is not really an error but it is
4330 s->flags |= SF_ERR_LOCAL; // to mark that it comes from the proxy
4331 if (!(s->flags & SF_FINST_MASK))
4332 s->flags |= SF_FINST_R;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4333
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4334 /* we may want to compress the stats page */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4335 if (sess->fe->comp || s->be->comp)
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4336 select_compression_request_header(s, req->buf);
4337
4338 /* 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]4339 req->analysers = (req->analysers & AN_REQ_HTTP_BODY) | AN_REQ_HTTP_XFER_BODY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4340 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4341 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4342
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4343 /* check whether we have some ACLs set to redirect this request */
4344 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4345 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4346 int ret;
4347
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4348 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]4349 ret = acl_pass(ret);
4350 if (rule->cond->pol == ACL_COND_UNLESS)
4351 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4352 if (!ret)
4353 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4354 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4355 if (!http_apply_redirect_rule(rule, s, txn))
4356 goto return_bad_req;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4357 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4358 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4359
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4360 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
4361 * If this happens, then the data will not come immediately, so we must
4362 * send all what we have without waiting. Note that due to the small gain
4363 * 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]4364 * 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]4365 * itself once used.
4366 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4367 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4368
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4369 done: /* done with this analyser, continue with next ones that the calling
4370 * points will have set, if any.
4371 */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4372 req->analyse_exp = TICK_ETERNITY;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4373 done_without_exp: /* done with this analyser, but dont reset the analyse_exp. */
4374 req->analysers &= ~an_bit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4375 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4376
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4377 tarpit:
4378 /* When a connection is tarpitted, we use the tarpit timeout,
4379 * which may be the same as the connect timeout if unspecified.
4380 * If unset, then set it to zero because we really want it to
4381 * eventually expire. We build the tarpit as an analyser.
4382 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4383 channel_erase(&s->req);
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4384
4385 /* wipe the request out so that we can drop the connection early
4386 * if the client closes first.
4387 */
4388 channel_dont_connect(req);
4389 req->analysers = 0; /* remove switching rules etc... */
4390 req->analysers |= AN_REQ_HTTP_TARPIT;
4391 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
4392 if (!req->analyse_exp)
4393 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4394 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4395 sess->fe->fe_counters.denied_req++;
4396 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4397 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4398 if (sess->listener->counters)
4399 sess->listener->counters->denied_req++;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4400 goto done_without_exp;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4401
4402 deny: /* this request was blocked (denied) */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4403 txn->flags |= TX_CLDENY;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]4404 txn->status = http_err_codes[txn->rule_deny_status];
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4405 s->logs.tv_request = now;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]4406 stream_int_retnclose(&s->si[0], http_error_message(s, txn->rule_deny_status));
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4407 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4408 sess->fe->fe_counters.denied_req++;
4409 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4410 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4411 if (sess->listener->counters)
4412 sess->listener->counters->denied_req++;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4413 goto return_prx_cond;
4414
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4415 return_bad_req:
4416 /* We centralize bad requests processing here */
4417 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
4418 /* we detected a parsing error. We want to archive this request
4419 * in the dedicated proxy area for later troubleshooting.
4420 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4421 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]4422 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4423
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4424 txn->req.msg_state = HTTP_MSG_ERROR;
4425 txn->status = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4426 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4427
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4428 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4429 if (sess->listener->counters)
4430 sess->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4431
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4432 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4433 if (!(s->flags & SF_ERR_MASK))
4434 s->flags |= SF_ERR_PRXCOND;
4435 if (!(s->flags & SF_FINST_MASK))
4436 s->flags |= SF_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]4437
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4438 req->analysers = 0;
4439 req->analyse_exp = TICK_ETERNITY;
4440 return 0;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4441
4442 return_prx_yield:
4443 channel_dont_connect(req);
4444 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4445}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4446
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4447/* This function performs all the processing enabled for the current request.
4448 * It returns 1 if the processing can continue on next analysers, or zero if it
4449 * needs more data, encounters an error, or wants to immediately abort the
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4450 * request. It relies on buffers flags, and updates s->req.analysers.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4451 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4452int http_process_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4453{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4454 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4455 struct http_txn *txn = s->txn;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4456 struct http_msg *msg = &txn->req;
Willy Tarreauee335e62015-04-21 18:15:13 +0200[diff] [blame]4457 struct connection *cli_conn = objt_conn(strm_sess(s)->origin);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4458
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4459 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4460 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4461 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4462 return 0;
4463 }
4464
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4465 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]4466 now_ms, __FUNCTION__,
4467 s,
4468 req,
4469 req->rex, req->wex,
4470 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4471 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4472 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4473
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4474 if (sess->fe->comp || s->be->comp)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]4475 select_compression_request_header(s, req->buf);
4476
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4477 /*
4478 * Right now, we know that we have processed the entire headers
4479 * and that unwanted requests have been filtered out. We can do
4480 * whatever we want with the remaining request. Also, now we
4481 * may have separate values for ->fe, ->be.
4482 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4483
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4484 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4485 * If HTTP PROXY is set we simply get remote server address parsing
4486 * incoming request. Note that this requires that a connection is
4487 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4488 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4489 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SF_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4490 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4491 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4492
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]4493 /* Note that for now we don't reuse existing proxy connections */
Willy Tarreau973a5422015-08-05 21:47:23 +0200[diff] [blame]4494 if (unlikely((conn = si_alloc_conn(&s->si[1])) == NULL)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4495 txn->req.msg_state = HTTP_MSG_ERROR;
4496 txn->status = 500;
4497 req->analysers = 0;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4498 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_500));
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4499
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4500 if (!(s->flags & SF_ERR_MASK))
4501 s->flags |= SF_ERR_RESOURCE;
4502 if (!(s->flags & SF_FINST_MASK))
4503 s->flags |= SF_FINST_R;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4504
4505 return 0;
4506 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4507
4508 path = http_get_path(txn);
4509 url2sa(req->buf->p + msg->sl.rq.u,
4510 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]4511 &conn->addr.to, NULL);
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4512 /* if the path was found, we have to remove everything between
4513 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
4514 * found, we need to replace from req->buf->p + msg->sl.rq.u for
4515 * u_l characters by a single "/".
4516 */
4517 if (path) {
4518 char *cur_ptr = req->buf->p;
4519 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4520 int delta;
4521
4522 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
4523 http_msg_move_end(&txn->req, delta);
4524 cur_end += delta;
4525 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4526 goto return_bad_req;
4527 }
4528 else {
4529 char *cur_ptr = req->buf->p;
4530 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4531 int delta;
4532
4533 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
4534 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
4535 http_msg_move_end(&txn->req, delta);
4536 cur_end += delta;
4537 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4538 goto return_bad_req;
4539 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4540 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4541
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4542 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4543 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4544 * Note that doing so might move headers in the request, but
4545 * the fields will stay coherent and the URI will not move.
4546 * This should only be performed in the backend.
4547 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]4548 if ((s->be->cookie_name || sess->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4549 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
4550 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]4551
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4552 /* add unique-id if "header-unique-id" is specified */
4553
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4554 if (!LIST_ISEMPTY(&sess->fe->format_unique_id)) {
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4555 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
4556 goto return_bad_req;
4557 s->unique_id[0] = '\0';
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4558 build_logline(s, s->unique_id, UNIQUEID_LEN, &sess->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4559 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4560
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4561 if (sess->fe->header_unique_id && s->unique_id) {
4562 chunk_printf(&trash, "%s: %s", sess->fe->header_unique_id, s->unique_id);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4563 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4564 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4565 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]4566 goto return_bad_req;
4567 }
4568
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4569 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4570 * 9: add X-Forwarded-For if either the frontend or the backend
4571 * asks for it.
4572 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4573 if ((sess->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4574 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4575 if (!((sess->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
4576 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : sess->fe->fwdfor_hdr_name,
4577 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]4578 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4579 /* The header is set to be added only if none is present
4580 * and we found it, so don't do anything.
4581 */
4582 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4583 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4584 /* Add an X-Forwarded-For header unless the source IP is
4585 * in the 'except' network range.
4586 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4587 if ((!sess->fe->except_mask.s_addr ||
4588 (((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr & sess->fe->except_mask.s_addr)
4589 != sess->fe->except_net.s_addr) &&
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4590 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4591 (((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]4592 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4593 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4594 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4595 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4596
4597 /* Note: we rely on the backend to get the header name to be used for
4598 * x-forwarded-for, because the header is really meant for the backends.
4599 * However, if the backend did not specify any option, we have to rely
4600 * on the frontend's header name.
4601 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4602 if (s->be->fwdfor_hdr_len) {
4603 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4604 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4605 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4606 len = sess->fe->fwdfor_hdr_len;
4607 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4608 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4609 len += snprintf(trash.str + len, trash.size - len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
Willy Tarreauedcf6682008-11-30 23:15:34 +0100[diff] [blame]4610
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4611 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, len) < 0))
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4612 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4613 }
4614 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4615 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4616 /* FIXME: for the sake of completeness, we should also support
4617 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4618 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4619 int len;
4620 char pn[INET6_ADDRSTRLEN];
4621 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4622 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4623 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4624
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4625 /* Note: we rely on the backend to get the header name to be used for
4626 * x-forwarded-for, because the header is really meant for the backends.
4627 * However, if the backend did not specify any option, we have to rely
4628 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4629 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4630 if (s->be->fwdfor_hdr_len) {
4631 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4632 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4633 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4634 len = sess->fe->fwdfor_hdr_len;
4635 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4636 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4637 len += snprintf(trash.str + len, trash.size - len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4638
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4639 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]4640 goto return_bad_req;
4641 }
4642 }
4643
4644 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4645 * 10: add X-Original-To if either the frontend or the backend
4646 * asks for it.
4647 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4648 if ((sess->fe->options | s->be->options) & PR_O_ORGTO) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4649
4650 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4651 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4652 /* Add an X-Original-To header unless the destination IP is
4653 * in the 'except' network range.
4654 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4655 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4656
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4657 if (cli_conn->addr.to.ss_family == AF_INET &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4658 ((!sess->fe->except_mask_to.s_addr ||
4659 (((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr.s_addr & sess->fe->except_mask_to.s_addr)
4660 != sess->fe->except_to.s_addr) &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4661 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4662 (((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]4663 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4664 int len;
4665 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4666 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4667
4668 /* Note: we rely on the backend to get the header name to be used for
4669 * x-original-to, because the header is really meant for the backends.
4670 * However, if the backend did not specify any option, we have to rely
4671 * on the frontend's header name.
4672 */
4673 if (s->be->orgto_hdr_len) {
4674 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4675 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4676 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4677 len = sess->fe->orgto_hdr_len;
4678 memcpy(trash.str, sess->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4679 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4680 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]4681
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4682 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]4683 goto return_bad_req;
4684 }
4685 }
4686 }
4687
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4688 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
4689 * If an "Upgrade" token is found, the header is left untouched in order not to have
4690 * to deal with some servers bugs : some of them fail an Upgrade if anything but
4691 * "Upgrade" is present in the Connection header.
4692 */
4693 if (!(txn->flags & TX_HDR_CONN_UPG) &&
4694 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4695 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4696 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4697 unsigned int want_flags = 0;
4698
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4699 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4700 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4701 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4702 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4703 !((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4704 want_flags |= TX_CON_CLO_SET;
4705 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4706 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4707 ((sess->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4708 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4709 ((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4710 want_flags |= TX_CON_KAL_SET;
4711 }
4712
4713 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4714 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4715 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4716
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4717
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4718 /* If we have no server assigned yet and we're balancing on url_param
4719 * with a POST request, we may be interested in checking the body for
4720 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4721 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4722 if (!(s->flags & (SF_ASSIGNED|SF_DIRECT)) &&
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4723 s->txn->meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4724 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4725 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4726 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4727 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4728
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4729 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4730 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4731#ifdef TCP_QUICKACK
4732 /* We expect some data from the client. Unless we know for sure
4733 * we already have a full request, we have to re-enable quick-ack
4734 * in case we previously disabled it, otherwise we might cause
4735 * the client to delay further data.
4736 */
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4737 if ((sess->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]4738 cli_conn && conn_ctrl_ready(cli_conn) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4739 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4740 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4741 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4742#endif
4743 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4744
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4745 /*************************************************************
4746 * OK, that's finished for the headers. We have done what we *
4747 * could. Let's switch to the DATA state. *
4748 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4749 req->analyse_exp = TICK_ETERNITY;
4750 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4751
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4752 /* if the server closes the connection, we want to immediately react
4753 * and close the socket to save packets and syscalls.
4754 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4755 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4756 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4757
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4758 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4759 /* OK let's go on with the BODY now */
4760 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4761
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4762 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4763 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4764 /* we detected a parsing error. We want to archive this request
4765 * in the dedicated proxy area for later troubleshooting.
4766 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4767 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]4768 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4769
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4770 txn->req.msg_state = HTTP_MSG_ERROR;
4771 txn->status = 400;
4772 req->analysers = 0;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4773 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4774
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4775 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4776 if (sess->listener->counters)
4777 sess->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4778
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4779 if (!(s->flags & SF_ERR_MASK))
4780 s->flags |= SF_ERR_PRXCOND;
4781 if (!(s->flags & SF_FINST_MASK))
4782 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4783 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4784}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4785
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4786/* This function is an analyser which processes the HTTP tarpit. It always
4787 * returns zero, at the beginning because it prevents any other processing
4788 * from occurring, and at the end because it terminates the request.
4789 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4790int http_process_tarpit(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4791{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4792 struct http_txn *txn = s->txn;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4793
4794 /* This connection is being tarpitted. The CLIENT side has
4795 * already set the connect expiration date to the right
4796 * timeout. We just have to check that the client is still
4797 * there and that the timeout has not expired.
4798 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4799 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4800 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4801 !tick_is_expired(req->analyse_exp, now_ms))
4802 return 0;
4803
4804 /* We will set the queue timer to the time spent, just for
4805 * logging purposes. We fake a 500 server error, so that the
4806 * attacker will not suspect his connection has been tarpitted.
4807 * It will not cause trouble to the logs because we can exclude
4808 * the tarpitted connections by filtering on the 'PT' status flags.
4809 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4810 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4811
4812 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4813 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4814 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4815
4816 req->analysers = 0;
4817 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4818
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4819 if (!(s->flags & SF_ERR_MASK))
4820 s->flags |= SF_ERR_PRXCOND;
4821 if (!(s->flags & SF_FINST_MASK))
4822 s->flags |= SF_FINST_T;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4823 return 0;
4824}
4825
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4826/* This function is an analyser which waits for the HTTP request body. It waits
4827 * for either the buffer to be full, or the full advertised contents to have
4828 * reached the buffer. It must only be called after the standard HTTP request
4829 * processing has occurred, because it expects the request to be parsed and will
4830 * look for the Expect header. It may send a 100-Continue interim response. It
4831 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
4832 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
4833 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4834 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4835int http_wait_for_request_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4836{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4837 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4838 struct http_txn *txn = s->txn;
4839 struct http_msg *msg = &s->txn->req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4840
4841 /* We have to parse the HTTP request body to find any required data.
4842 * "balance url_param check_post" should have been the only way to get
4843 * into this. We were brought here after HTTP header analysis, so all
4844 * related structures are ready.
4845 */
4846
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4847 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
4848 /* This is the first call */
4849 if (msg->msg_state < HTTP_MSG_BODY)
4850 goto missing_data;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4851
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4852 if (msg->msg_state < HTTP_MSG_100_SENT) {
4853 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4854 * send an HTTP/1.1 100 Continue intermediate response.
4855 */
4856 if (msg->flags & HTTP_MSGF_VER_11) {
4857 struct hdr_ctx ctx;
4858 ctx.idx = 0;
4859 /* Expect is allowed in 1.1, look for it */
4860 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
4861 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4862 bo_inject(&s->res, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4863 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4864 }
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4865 msg->msg_state = HTTP_MSG_100_SENT;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4866 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4867
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4868 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4869 * req->buf->p still points to the beginning of the message. We
4870 * must save the body in msg->next because it survives buffer
4871 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4872 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4873 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4874
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4875 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4876 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4877 else
4878 msg->msg_state = HTTP_MSG_DATA;
4879 }
4880
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4881 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
4882 /* We're in content-length mode, we just have to wait for enough data. */
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4883 if (http_body_bytes(msg) < msg->body_len)
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4884 goto missing_data;
4885
4886 /* OK we have everything we need now */
4887 goto http_end;
4888 }
4889
4890 /* OK here we're parsing a chunked-encoded message */
4891
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4892 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4893 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4894 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4895 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4896 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4897 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4898
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4899 if (!ret)
4900 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4901 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4902 stream_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4903 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4904 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4905 }
4906
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4907 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4908 * We have the first data byte is in msg->sov + msg->sol. We're waiting
4909 * for at least a whole chunk or the whole content length bytes after
4910 * msg->sov + msg->sol.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4911 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4912 if (msg->msg_state == HTTP_MSG_TRAILERS)
4913 goto http_end;
4914
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4915 if (http_body_bytes(msg) >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4916 goto http_end;
4917
4918 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4919 /* we get here if we need to wait for more data. If the buffer is full,
4920 * we have the maximum we can expect.
4921 */
4922 if (buffer_full(req->buf, global.tune.maxrewrite))
4923 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4924
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4925 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4926 txn->status = 408;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4927 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4928
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4929 if (!(s->flags & SF_ERR_MASK))
4930 s->flags |= SF_ERR_CLITO;
4931 if (!(s->flags & SF_FINST_MASK))
4932 s->flags |= SF_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4933 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4934 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4935
4936 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4937 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4938 /* Not enough data. We'll re-use the http-request
4939 * timeout here. Ideally, we should set the timeout
4940 * relative to the accept() date. We just set the
4941 * request timeout once at the beginning of the
4942 * request.
4943 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4944 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4945 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4946 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4947 return 0;
4948 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4949
4950 http_end:
4951 /* The situation will not evolve, so let's give up on the analysis. */
4952 s->logs.tv_request = now; /* update the request timer to reflect full request */
4953 req->analysers &= ~an_bit;
4954 req->analyse_exp = TICK_ETERNITY;
4955 return 1;
4956
4957 return_bad_req: /* let's centralize all bad requests */
4958 txn->req.msg_state = HTTP_MSG_ERROR;
4959 txn->status = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4960 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4961
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4962 if (!(s->flags & SF_ERR_MASK))
4963 s->flags |= SF_ERR_PRXCOND;
4964 if (!(s->flags & SF_FINST_MASK))
4965 s->flags |= SF_FINST_R;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4966
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4967 return_err_msg:
4968 req->analysers = 0;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4969 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4970 if (sess->listener->counters)
4971 sess->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4972 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4973}
4974
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4975/* send a server's name with an outgoing request over an established connection.
4976 * Note: this function is designed to be called once the request has been scheduled
4977 * for being forwarded. This is the reason why it rewinds the buffer before
4978 * proceeding.
4979 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4980int 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]4981
4982 struct hdr_ctx ctx;
4983
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4984 char *hdr_name = be->server_id_hdr_name;
4985 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4986 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4987 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4988 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4989
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4990 ctx.idx = 0;
4991
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]4992 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4993 if (old_o) {
4994 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4995 b_rew(chn->buf, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4996 txn->req.next += old_o;
4997 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4998 }
4999
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5000 old_i = chn->buf->i;
5001 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]5002 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5003 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5004 }
5005
5006 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5007 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5008 memcpy(hdr_val, hdr_name, hdr_name_len);
5009 hdr_val += hdr_name_len;
5010 *hdr_val++ = ':';
5011 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5012 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
5013 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]5014
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5015 if (old_o) {
5016 /* If this was a forwarded request, we must readjust the amount of
5017 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]5018 * variations. Note that the current state is >= HTTP_MSG_BODY,
5019 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5020 */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]5021 old_o += chn->buf->i - old_i;
5022 b_adv(chn->buf, old_o);
5023 txn->req.next -= old_o;
5024 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]5025 }
5026
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5027 return 0;
5028}
5029
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5030/* Terminate current transaction and prepare a new one. This is very tricky
5031 * right now but it works.
5032 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5033void http_end_txn_clean_session(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5034{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5035 int prev_status = s->txn->status;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]5036 struct proxy *fe = strm_fe(s);
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5037 struct connection *srv_conn;
5038 struct server *srv;
Willy Tarreau449d74a2015-08-05 17:16:33 +0200[diff] [blame]5039 unsigned int prev_flags = s->txn->flags;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5040
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5041 /* FIXME: We need a more portable way of releasing a backend's and a
5042 * server's connections. We need a safer way to reinitialize buffer
5043 * flags. We also need a more accurate method for computing per-request
5044 * data.
5045 */
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5046 srv_conn = objt_conn(s->si[1].end);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5047
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5048 /* unless we're doing keep-alive, we want to quickly close the connection
5049 * to the server.
5050 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5051 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5052 !si_conn_ready(&s->si[1])) {
5053 s->si[1].flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
5054 si_shutr(&s->si[1]);
5055 si_shutw(&s->si[1]);
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5056 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5057
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5058 if (s->flags & SF_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5059 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]5060 if (unlikely(s->srv_conn))
5061 sess_change_server(s, NULL);
5062 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5063
5064 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5065 stream_process_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5066
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5067 if (s->txn->status) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5068 int n;
5069
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5070 n = s->txn->status / 100;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5071 if (n < 1 || n > 5)
5072 n = 0;
5073
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5074 if (fe->mode == PR_MODE_HTTP) {
5075 fe->fe_counters.p.http.rsp[n]++;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5076 if (s->comp_algo && (s->flags & SF_COMP_READY))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5077 fe->fe_counters.p.http.comp_rsp++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5078 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5079 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5080 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5081 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5082 s->be->be_counters.p.http.cum_req++;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5083 if (s->comp_algo && (s->flags & SF_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5084 s->be->be_counters.p.http.comp_rsp++;
5085 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5086 }
5087
5088 /* don't count other requests' data */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5089 s->logs.bytes_in -= s->req.buf->i;
5090 s->logs.bytes_out -= s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5091
5092 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5093 if (!LIST_ISEMPTY(&fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5094 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5095 (!(fe->options & PR_O_NULLNOLOG) || s->req.total)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5096 s->do_log(s);
5097 }
5098
Willy Tarreaud713bcc2014-06-25 15:36:04 +0200[diff] [blame]5099 /* stop tracking content-based counters */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5100 stream_stop_content_counters(s);
5101 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +0200[diff] [blame]5102
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5103 s->logs.accept_date = date; /* user-visible date for logging */
5104 s->logs.tv_accept = now; /* corrected date for internal use */
5105 tv_zero(&s->logs.tv_request);
5106 s->logs.t_queue = -1;
5107 s->logs.t_connect = -1;
5108 s->logs.t_data = -1;
5109 s->logs.t_close = 0;
5110 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
5111 s->logs.srv_queue_size = 0; /* we will get this number soon */
5112
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5113 s->logs.bytes_in = s->req.total = s->req.buf->i;
5114 s->logs.bytes_out = s->res.total = s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5115
5116 if (s->pend_pos)
5117 pendconn_free(s->pend_pos);
5118
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5119 if (objt_server(s->target)) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5120 if (s->flags & SF_CURR_SESS) {
5121 s->flags &= ~SF_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5122 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5123 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5124 if (may_dequeue_tasks(objt_server(s->target), s->be))
5125 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5126 }
5127
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5128 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5129
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5130 /* only release our endpoint if we don't intend to reuse the
5131 * connection.
5132 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5133 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5134 !si_conn_ready(&s->si[1])) {
5135 si_release_endpoint(&s->si[1]);
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5136 srv_conn = NULL;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5137 }
5138
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5139 s->si[1].state = s->si[1].prev_state = SI_ST_INI;
5140 s->si[1].err_type = SI_ET_NONE;
5141 s->si[1].conn_retries = 0; /* used for logging too */
5142 s->si[1].exp = TICK_ETERNITY;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5143 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]5144 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);
5145 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]5146 s->flags &= ~(SF_DIRECT|SF_ASSIGNED|SF_ADDR_SET|SF_BE_ASSIGNED|SF_FORCE_PRST|SF_IGNORE_PRST);
5147 s->flags &= ~(SF_CURR_SESS|SF_REDIRECTABLE|SF_SRV_REUSED);
5148 s->flags &= ~(SF_ERR_MASK|SF_FINST_MASK|SF_REDISP);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]5149
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5150 s->txn->meth = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5151 http_reset_txn(s);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5152 s->txn->flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5153
5154 if (prev_status == 401 || prev_status == 407) {
5155 /* In HTTP keep-alive mode, if we receive a 401, we still have
5156 * a chance of being able to send the visitor again to the same
5157 * server over the same connection. This is required by some
5158 * broken protocols such as NTLM, and anyway whenever there is
5159 * an opportunity for sending the challenge to the proper place,
5160 * it's better to do it (at least it helps with debugging).
5161 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5162 s->txn->flags |= TX_PREFER_LAST;
Willy Tarreau387ebf82015-08-04 19:24:13 +0200[diff] [blame]5163 srv_conn->flags |= CO_FL_PRIVATE;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5164 }
5165
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5166 if (fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5167 s->si[1].flags |= SI_FL_INDEP_STR;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5168
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5169 if (fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5170 s->req.flags |= CF_NEVER_WAIT;
5171 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]5172 }
5173
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5174 /* if the request buffer is not empty, it means we're
5175 * about to process another request, so send pending
5176 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5177 * Just don't do this if the buffer is close to be full,
5178 * because the request will wait for it to flush a little
5179 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5180 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5181 if (s->req.buf->i) {
5182 if (s->res.buf->o &&
5183 !buffer_full(s->res.buf, global.tune.maxrewrite) &&
5184 bi_end(s->res.buf) <= s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)
5185 s->res.flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5186 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5187
5188 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5189 channel_auto_read(&s->req);
5190 channel_auto_close(&s->req);
5191 channel_auto_read(&s->res);
5192 channel_auto_close(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5193
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]5194 /* we're in keep-alive with an idle connection, monitor it */
Willy Tarreau4320eaa2015-08-05 11:08:30 +0200[diff] [blame]5195 if (srv_conn) {
Willy Tarreau323a2d92015-08-04 19:00:17 +0200[diff] [blame]5196 srv = objt_server(srv_conn->target);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5197 if (!srv)
5198 si_idle_conn(&s->si[1], NULL);
5199 else if ((srv_conn->flags & CO_FL_PRIVATE) ||
5200 ((s->be->options & PR_O_REUSE_MASK) == PR_O_REUSE_NEVR))
5201 si_idle_conn(&s->si[1], &srv->priv_conns);
Willy Tarreau449d74a2015-08-05 17:16:33 +0200[diff] [blame]5202 else if (prev_flags & TX_NOT_FIRST)
5203 /* note: we check the request, not the connection, but
5204 * this is valid for strategies SAFE and AGGR, and in
5205 * case of ALWS, we don't care anyway.
5206 */
5207 si_idle_conn(&s->si[1], &srv->safe_conns);
Willy Tarreau8dff9982015-08-04 20:45:52 +0200[diff] [blame]5208 else
5209 si_idle_conn(&s->si[1], &srv->idle_conns);
Willy Tarreau4320eaa2015-08-05 11:08:30 +0200[diff] [blame]5210 }
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]5211
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]5212 s->req.analysers = strm_li(s)->analysers;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5213 s->res.analysers = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5214}
5215
5216
5217/* This function updates the request state machine according to the response
5218 * state machine and buffer flags. It returns 1 if it changes anything (flag
5219 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5220 * it is only used to find when a request/response couple is complete. Both
5221 * this function and its equivalent should loop until both return zero. It
5222 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5223 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5224int http_sync_req_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5225{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5226 struct channel *chn = &s->req;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5227 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5228 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5229 unsigned int old_state = txn->req.msg_state;
5230
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5231 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
5232 return 0;
5233
5234 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5235 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5236 * We can shut the read side unless we want to abort_on_close,
5237 * or we have a POST request. The issue with POST requests is
5238 * that some browsers still send a CRLF after the request, and
5239 * this CRLF must be read so that it does not remain in the kernel
5240 * buffers, otherwise a close could cause an RST on some systems
5241 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5242 * Note that if we're using keep-alive on the client side, we'd
5243 * rather poll now and keep the polling enabled for the whole
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5244 * stream's life than enabling/disabling it between each
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5245 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5246 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5247 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5248 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5249 !(s->be->options & PR_O_ABRT_CLOSE) &&
5250 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5251 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5252
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5253 /* if the server closes the connection, we want to immediately react
5254 * and close the socket to save packets and syscalls.
5255 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5256 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5257
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5258 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
5259 goto wait_other_side;
5260
5261 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
5262 /* The server has not finished to respond, so we
5263 * don't want to move in order not to upset it.
5264 */
5265 goto wait_other_side;
5266 }
5267
5268 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
5269 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5270 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5271 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5272 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5273 goto wait_other_side;
5274 }
5275
5276 /* When we get here, it means that both the request and the
5277 * response have finished receiving. Depending on the connection
5278 * mode, we'll have to wait for the last bytes to leave in either
5279 * direction, and sometimes for a close to be effective.
5280 */
5281
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5282 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5283 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5284 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
5285 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5286 }
5287 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5288 /* Option forceclose is set, or either side wants to close,
5289 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5290 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5291 * once both states are CLOSED.
5292 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5293 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5294 channel_shutr_now(chn);
5295 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5296 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5297 }
5298 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5299 /* The last possible modes are keep-alive and tunnel. Tunnel mode
5300 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5301 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5302 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
5303 channel_auto_read(chn);
5304 txn->req.msg_state = HTTP_MSG_TUNNEL;
5305 chn->flags |= CF_NEVER_WAIT;
5306 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5307 }
5308
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5309 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5310 /* if we've just closed an output, let's switch */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5311 s->si[1].flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5312
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5313 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5314 txn->req.msg_state = HTTP_MSG_CLOSING;
5315 goto http_msg_closing;
5316 }
5317 else {
5318 txn->req.msg_state = HTTP_MSG_CLOSED;
5319 goto http_msg_closed;
5320 }
5321 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5322 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5323 }
5324
5325 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
5326 http_msg_closing:
5327 /* nothing else to forward, just waiting for the output buffer
5328 * to be empty and for the shutw_now to take effect.
5329 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5330 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5331 txn->req.msg_state = HTTP_MSG_CLOSED;
5332 goto http_msg_closed;
5333 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5334 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5335 txn->req.msg_state = HTTP_MSG_ERROR;
5336 goto wait_other_side;
5337 }
5338 }
5339
5340 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
5341 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5342 /* see above in MSG_DONE why we only do this in these states */
5343 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5344 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5345 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]5346 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5347 goto wait_other_side;
5348 }
5349
5350 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5351 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5352}
5353
5354
5355/* This function updates the response state machine according to the request
5356 * state machine and buffer flags. It returns 1 if it changes anything (flag
5357 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5358 * it is only used to find when a request/response couple is complete. Both
5359 * this function and its equivalent should loop until both return zero. It
5360 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5361 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5362int http_sync_res_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5363{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5364 struct channel *chn = &s->res;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5365 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5366 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5367 unsigned int old_state = txn->rsp.msg_state;
5368
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5369 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
5370 return 0;
5371
5372 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
5373 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5374 * still monitor the server connection for a possible close
5375 * while the request is being uploaded, so we don't disable
5376 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5377 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5378 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5379
5380 if (txn->req.msg_state == HTTP_MSG_ERROR)
5381 goto wait_other_side;
5382
5383 if (txn->req.msg_state < HTTP_MSG_DONE) {
5384 /* The client seems to still be sending data, probably
5385 * because we got an error response during an upload.
5386 * We have the choice of either breaking the connection
5387 * or letting it pass through. Let's do the later.
5388 */
5389 goto wait_other_side;
5390 }
5391
5392 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
5393 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5394 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5395 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5396 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5397 goto wait_other_side;
5398 }
5399
5400 /* When we get here, it means that both the request and the
5401 * response have finished receiving. Depending on the connection
5402 * mode, we'll have to wait for the last bytes to leave in either
5403 * direction, and sometimes for a close to be effective.
5404 */
5405
5406 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5407 /* Server-close mode : shut read and wait for the request
5408 * side to close its output buffer. The caller will detect
5409 * when we're in DONE and the other is in CLOSED and will
5410 * catch that for the final cleanup.
5411 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5412 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
5413 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5414 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5415 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5416 /* Option forceclose is set, or either side wants to close,
5417 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5418 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5419 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5420 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5421 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5422 channel_shutr_now(chn);
5423 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5424 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5425 }
5426 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5427 /* The last possible modes are keep-alive and tunnel. Tunnel will
5428 * need to forward remaining data. Keep-alive will need to monitor
5429 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5430 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5431 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5432 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5433 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
5434 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5435 }
5436
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5437 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5438 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5439 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5440 txn->rsp.msg_state = HTTP_MSG_CLOSING;
5441 goto http_msg_closing;
5442 }
5443 else {
5444 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5445 goto http_msg_closed;
5446 }
5447 }
5448 goto wait_other_side;
5449 }
5450
5451 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
5452 http_msg_closing:
5453 /* nothing else to forward, just waiting for the output buffer
5454 * to be empty and for the shutw_now to take effect.
5455 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5456 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5457 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5458 goto http_msg_closed;
5459 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5460 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5461 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5462 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5463 if (objt_server(s->target))
5464 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5465 goto wait_other_side;
5466 }
5467 }
5468
5469 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
5470 http_msg_closed:
5471 /* drop any pending data */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5472 channel_truncate(chn);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5473 channel_auto_close(chn);
5474 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5475 goto wait_other_side;
5476 }
5477
5478 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5479 /* We force the response to leave immediately if we're waiting for the
5480 * other side, since there is no pending shutdown to push it out.
5481 */
5482 if (!channel_is_empty(chn))
5483 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5484 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5485}
5486
5487
5488/* Resync the request and response state machines. Return 1 if either state
5489 * changes.
5490 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5491int http_resync_states(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5492{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5493 struct http_txn *txn = s->txn;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5494 int old_req_state = txn->req.msg_state;
5495 int old_res_state = txn->rsp.msg_state;
5496
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5497 http_sync_req_state(s);
5498 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5499 if (!http_sync_res_state(s))
5500 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5501 if (!http_sync_req_state(s))
5502 break;
5503 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]5504
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5505 /* OK, both state machines agree on a compatible state.
5506 * There are a few cases we're interested in :
5507 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
5508 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
5509 * directions, so let's simply disable both analysers.
5510 * - HTTP_MSG_CLOSED on the response only means we must abort the
5511 * request.
5512 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
5513 * with server-close mode means we've completed one request and we
5514 * must re-initialize the server connection.
5515 */
5516
5517 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
5518 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
5519 (txn->req.msg_state == HTTP_MSG_CLOSED &&
5520 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5521 s->req.analysers = 0;
5522 channel_auto_close(&s->req);
5523 channel_auto_read(&s->req);
5524 s->res.analysers = 0;
5525 channel_auto_close(&s->res);
5526 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5527 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5528 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5529 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->res.flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]5530 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5531 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5532 s->res.analysers = 0;
5533 channel_auto_close(&s->res);
5534 channel_auto_read(&s->res);
5535 s->req.analysers = 0;
5536 channel_abort(&s->req);
5537 channel_auto_close(&s->req);
5538 channel_auto_read(&s->req);
5539 channel_truncate(&s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5540 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5541 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
5542 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5543 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5544 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
5545 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
5546 /* server-close/keep-alive: terminate this transaction,
5547 * possibly killing the server connection and reinitialize
5548 * a fresh-new transaction.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5549 */
5550 http_end_txn_clean_session(s);
5551 }
5552
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5553 return txn->req.msg_state != old_req_state ||
5554 txn->rsp.msg_state != old_res_state;
5555}
5556
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5557/* This function is an analyser which forwards request body (including chunk
5558 * sizes if any). It is called as soon as we must forward, even if we forward
5559 * zero byte. The only situation where it must not be called is when we're in
5560 * tunnel mode and we want to forward till the close. It's used both to forward
5561 * remaining data and to resync after end of body. It expects the msg_state to
5562 * 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]5563 * 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]5564 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5565 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5566 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5567int http_request_forward_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5568{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5569 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5570 struct http_txn *txn = s->txn;
5571 struct http_msg *msg = &s->txn->req;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5572
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5573 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5574 return 0;
5575
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5576 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]5577 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5578 /* Output closed while we were sending data. We must abort and
5579 * wake the other side up.
5580 */
5581 msg->msg_state = HTTP_MSG_ERROR;
5582 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5583 return 1;
5584 }
5585
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5586 /* Note that we don't have to send 100-continue back because we don't
5587 * need the data to complete our job, and it's up to the server to
5588 * decide whether to return 100, 417 or anything else in return of
5589 * an "Expect: 100-continue" header.
5590 */
5591
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]5592 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5593 /* we have msg->sov which points to the first byte of message
5594 * body, and req->buf.p still points to the beginning of the
5595 * message. We forward the headers now, as we don't need them
5596 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5597 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5598 b_adv(req->buf, msg->sov);
5599 msg->next -= msg->sov;
5600 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5601
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5602 /* The previous analysers guarantee that the state is somewhere
5603 * between MSG_BODY and the first MSG_DATA. So msg->sol and
5604 * msg->next are always correct.
5605 */
5606 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
5607 if (msg->flags & HTTP_MSGF_TE_CHNK)
5608 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
5609 else
5610 msg->msg_state = HTTP_MSG_DATA;
5611 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5612 }
5613
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5614 /* Some post-connect processing might want us to refrain from starting to
5615 * forward data. Currently, the only reason for this is "balance url_param"
5616 * whichs need to parse/process the request after we've enabled forwarding.
5617 */
5618 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5619 if (!(s->res.flags & CF_READ_ATTACHED)) {
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5620 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +0200[diff] [blame]5621 req->flags |= CF_WAKE_CONNECT;
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5622 goto missing_data;
5623 }
5624 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5625 }
5626
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5627 /* in most states, we should abort in case of early close */
5628 channel_auto_close(req);
5629
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5630 if (req->to_forward) {
5631 /* We can't process the buffer's contents yet */
5632 req->flags |= CF_WAKE_WRITE;
5633 goto missing_data;
5634 }
5635
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5636 while (1) {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5637 if (msg->msg_state == HTTP_MSG_DATA) {
5638 /* must still forward */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5639 /* we may have some pending data starting at req->buf->p */
5640 if (msg->chunk_len > req->buf->i - msg->next) {
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5641 req->flags |= CF_WAKE_WRITE;
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5642 goto missing_data;
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5643 }
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5644 msg->next += msg->chunk_len;
5645 msg->chunk_len = 0;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5646
5647 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5648 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5649 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5650 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5651 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5652 }
5653 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5654 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5655 * set ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5656 * TRAILERS state.
5657 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5658 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5659
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5660 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5661 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5662 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5663 stream_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5664 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5665 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]5666 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5667 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5668 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5669 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5670 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5671 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5672 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5673
5674 if (ret == 0)
5675 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5676 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5677 stream_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5678 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5679 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]5680 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5681 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5682 /* we're in MSG_CHUNK_SIZE now */
5683 }
5684 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5685 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5686
5687 if (ret == 0)
5688 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5689 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5690 stream_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5691 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5692 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]5693 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5694 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5695 /* we're in HTTP_MSG_DONE now */
5696 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5697 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5698 int old_state = msg->msg_state;
5699
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5700 /* other states, DONE...TUNNEL */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5701
5702 /* we may have some pending data starting at req->buf->p
5703 * such as last chunk of data or trailers.
5704 */
5705 b_adv(req->buf, msg->next);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5706 if (unlikely(!(s->req.flags & CF_WROTE_DATA)))
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]5707 msg->sov -= msg->next;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5708 msg->next = 0;
5709
Willy Tarreaubbfb6c42015-05-11 18:30:33 +0200[diff] [blame]5710 /* we don't want to forward closes on DONE except in
5711 * tunnel mode.
5712 */
5713 if ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5714 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5715 if (http_resync_states(s)) {
5716 /* some state changes occurred, maybe the analyser
5717 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]5718 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5719 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5720 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5721 /* request errors are most likely due to
5722 * the server aborting the transfer.
5723 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5724 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5725 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5726 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5727 http_capture_bad_message(&sess->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5728 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5729 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5730 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5731 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5732
5733 /* If "option abortonclose" is set on the backend, we
5734 * want to monitor the client's connection and forward
5735 * any shutdown notification to the server, which will
5736 * decide whether to close or to go on processing the
Willy Tarreaubbfb6c42015-05-11 18:30:33 +0200[diff] [blame]5737 * request. We only do that in tunnel mode, and not in
5738 * other modes since it can be abused to exhaust source
5739 * ports.
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5740 */
5741 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5742 channel_auto_read(req);
Willy Tarreaubbfb6c42015-05-11 18:30:33 +0200[diff] [blame]5743 if ((req->flags & (CF_SHUTR|CF_READ_NULL)) &&
5744 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN))
5745 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5746 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5747 }
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5748 else if (s->txn->meth == HTTP_METH_POST) {
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5749 /* POST requests may require to read extra CRLF
5750 * sent by broken browsers and which could cause
5751 * an RST to be sent upon close on some systems
5752 * (eg: Linux).
5753 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5754 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5755 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5756
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5757 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5758 }
5759 }
5760
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5761 missing_data:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5762 /* we may have some pending data starting at req->buf->p */
5763 b_adv(req->buf, msg->next);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5764 if (unlikely(!(s->req.flags & CF_WROTE_DATA)))
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]5765 msg->sov -= msg->next + MIN(msg->chunk_len, req->buf->i);
5766
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5767 msg->next = 0;
5768 msg->chunk_len -= channel_forward(req, msg->chunk_len);
5769
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5770 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5771 if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5772 if (!(s->flags & SF_ERR_MASK))
5773 s->flags |= SF_ERR_CLICL;
5774 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5775 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5776 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5777 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5778 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5779 }
5780
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5781 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5782 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5783 if (objt_server(s->target))
5784 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5785
5786 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5787 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5788
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5789 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5790 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5791 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5792
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5793 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5794 * 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]5795 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5796 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5797 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5798
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5799 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5800 * 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]5801 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5802 * modes are already handled by the stream sock layer. We must not do
5803 * this in content-length mode because it could present the MSG_MORE
5804 * flag with the last block of forwarded data, which would cause an
5805 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5806 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5807 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5808 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5809
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5810 return 0;
5811
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5812 return_bad_req: /* let's centralize all bad requests */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5813 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5814 if (sess->listener->counters)
5815 sess->listener->counters->failed_req++;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5816
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5817 return_bad_req_stats_ok:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5818 /* we may have some pending data starting at req->buf->p */
5819 b_adv(req->buf, msg->next);
5820 msg->next = 0;
5821
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5822 txn->req.msg_state = HTTP_MSG_ERROR;
5823 if (txn->status) {
5824 /* Note: we don't send any error if some data were already sent */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5825 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5826 } else {
5827 txn->status = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5828 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5829 }
5830 req->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5831 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]5832
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5833 if (!(s->flags & SF_ERR_MASK))
5834 s->flags |= SF_ERR_PRXCOND;
5835 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5836 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5837 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5838 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5839 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5840 }
5841 return 0;
5842
5843 aborted_xfer:
5844 txn->req.msg_state = HTTP_MSG_ERROR;
5845 if (txn->status) {
5846 /* Note: we don't send any error if some data were already sent */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5847 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5848 } else {
5849 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5850 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5851 }
5852 req->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5853 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]5854
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5855 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5856 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5857 if (objt_server(s->target))
5858 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5859
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5860 if (!(s->flags & SF_ERR_MASK))
5861 s->flags |= SF_ERR_SRVCL;
5862 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5863 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5864 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5865 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5866 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5867 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5868 return 0;
5869}
5870
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5871/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5872 * processing can continue on next analysers, or zero if it either needs more
5873 * data or wants to immediately abort the response (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5874 * 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]5875 * when it has nothing left to do, and may remove any analyser when it wants to
5876 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5877 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5878int http_wait_for_response(struct stream *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5879{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5880 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5881 struct http_txn *txn = s->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5882 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5883 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5884 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5885 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5886 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5887
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5888 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]5889 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5890 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5891 rep,
5892 rep->rex, rep->wex,
5893 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5894 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5895 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5896
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5897 /*
5898 * Now parse the partial (or complete) lines.
5899 * We will check the response syntax, and also join multi-line
5900 * headers. An index of all the lines will be elaborated while
5901 * parsing.
5902 *
5903 * For the parsing, we use a 28 states FSM.
5904 *
5905 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5906 * rep->buf->p = beginning of response
5907 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5908 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5909 * msg->eol = end of current header or line (LF or CRLF)
5910 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5911 */
5912
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5913 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5914 /* There's a protected area at the end of the buffer for rewriting
5915 * purposes. We don't want to start to parse the request if the
5916 * protected area is affected, because we may have to move processed
5917 * data later, which is much more complicated.
5918 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5919 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]5920 if (unlikely(!channel_is_rewritable(rep))) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5921 /* some data has still not left the buffer, wake us once that's done */
5922 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5923 goto abort_response;
5924 channel_dont_close(rep);
5925 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5926 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5927 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5928 }
5929
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5930 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5931 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5932 buffer_slow_realign(rep->buf);
5933
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5934 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5935 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5936 }
5937
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5938 /* 1: we might have to print this header in debug mode */
5939 if (unlikely((global.mode & MODE_DEBUG) &&
5940 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]5941 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5942 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5943
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5944 sol = rep->buf->p;
5945 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5946 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5947
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5948 sol += hdr_idx_first_pos(&txn->hdr_idx);
5949 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5950
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5951 while (cur_idx) {
5952 eol = sol + txn->hdr_idx.v[cur_idx].len;
5953 debug_hdr("srvhdr", s, sol, eol);
5954 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5955 cur_idx = txn->hdr_idx.v[cur_idx].next;
5956 }
5957 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5958
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5959 /*
5960 * Now we quickly check if we have found a full valid response.
5961 * If not so, we check the FD and buffer states before leaving.
5962 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5963 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5964 * responses are checked first.
5965 *
5966 * Depending on whether the client is still there or not, we
5967 * may send an error response back or not. Note that normally
5968 * we should only check for HTTP status there, and check I/O
5969 * errors somewhere else.
5970 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5971
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5972 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5973 /* Invalid response */
5974 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5975 /* we detected a parsing error. We want to archive this response
5976 * in the dedicated proxy area for later troubleshooting.
5977 */
5978 hdr_response_bad:
5979 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5980 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]5981
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5982 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5983 if (objt_server(s->target)) {
5984 objt_server(s->target)->counters.failed_resp++;
5985 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5986 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5987 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5988 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5989 rep->analysers = 0;
5990 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5991 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5992 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5993 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5994
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5995 if (!(s->flags & SF_ERR_MASK))
5996 s->flags |= SF_ERR_PRXCOND;
5997 if (!(s->flags & SF_FINST_MASK))
5998 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5999
6000 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6001 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6002
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6003 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6004 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]6005 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6006 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6007 goto hdr_response_bad;
6008 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6009
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6010 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6011 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6012 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6013 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]6014 else if (txn->flags & TX_NOT_FIRST)
6015 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]6016
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6017 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6018 if (objt_server(s->target)) {
6019 objt_server(s->target)->counters.failed_resp++;
6020 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6021 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]6022
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6023 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6024 rep->analysers = 0;
6025 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6026 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6027 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6028 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]6029
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6030 if (!(s->flags & SF_ERR_MASK))
6031 s->flags |= SF_ERR_SRVCL;
6032 if (!(s->flags & SF_FINST_MASK))
6033 s->flags |= SF_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]6034 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6035 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6036
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +0200[diff] [blame]6037 /* read timeout : return a 504 to the client. */
6038 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6039 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6040 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]6041 else if (txn->flags & TX_NOT_FIRST)
6042 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6043
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6044 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6045 if (objt_server(s->target)) {
6046 objt_server(s->target)->counters.failed_resp++;
6047 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6048 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6049
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6050 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6051 rep->analysers = 0;
6052 txn->status = 504;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6053 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6054 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6055 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]6056
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6057 if (!(s->flags & SF_ERR_MASK))
6058 s->flags |= SF_ERR_SRVTO;
6059 if (!(s->flags & SF_FINST_MASK))
6060 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6061 return 0;
6062 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]6063
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6064 /* client abort with an abortonclose */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6065 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]6066 sess->fe->fe_counters.cli_aborts++;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6067 s->be->be_counters.cli_aborts++;
6068 if (objt_server(s->target))
6069 objt_server(s->target)->counters.cli_aborts++;
6070
6071 rep->analysers = 0;
6072 channel_auto_close(rep);
6073
6074 txn->status = 400;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6075 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6076 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6077
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6078 if (!(s->flags & SF_ERR_MASK))
6079 s->flags |= SF_ERR_CLICL;
6080 if (!(s->flags & SF_FINST_MASK))
6081 s->flags |= SF_FINST_H;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6082
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6083 /* process_stream() will take care of the error */
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6084 return 0;
6085 }
6086
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]6087 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6088 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]6089 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6090 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]6091 else if (txn->flags & TX_NOT_FIRST)
6092 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6093
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6094 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6095 if (objt_server(s->target)) {
6096 objt_server(s->target)->counters.failed_resp++;
6097 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6098 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6099
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6100 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6101 rep->analysers = 0;
6102 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6103 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6104 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6105 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6106
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6107 if (!(s->flags & SF_ERR_MASK))
6108 s->flags |= SF_ERR_SRVCL;
6109 if (!(s->flags & SF_FINST_MASK))
6110 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6111 return 0;
6112 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]6113
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6114 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6115 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6116 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6117 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]6118 else if (txn->flags & TX_NOT_FIRST)
6119 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]6120
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6121 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6122 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6123 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6124
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6125 if (!(s->flags & SF_ERR_MASK))
6126 s->flags |= SF_ERR_CLICL;
6127 if (!(s->flags & SF_FINST_MASK))
6128 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6129
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6130 /* process_stream() will take care of the error */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6131 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6132 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6133
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6134 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]6135 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6136 return 0;
6137 }
6138
6139 /* More interesting part now : we know that we have a complete
6140 * response which at least looks like HTTP. We have an indicator
6141 * of each header's length, so we can parse them quickly.
6142 */
6143
6144 if (unlikely(msg->err_pos >= 0))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6145 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]6146
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6147 /*
6148 * 1: get the status code
6149 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6150 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6151 if (n < 1 || n > 5)
6152 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6153 /* when the client triggers a 4xx from the server, it's most often due
6154 * to a missing object or permission. These events should be tracked
6155 * because if they happen often, it may indicate a brute force or a
6156 * vulnerability scan.
6157 */
6158 if (n == 4)
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6159 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6160
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6161 if (objt_server(s->target))
6162 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6163
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]6164 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
6165 * exactly one digit "." one digit. This check may be disabled using
6166 * option accept-invalid-http-response.
6167 */
6168 if (!(s->be->options2 & PR_O2_RSPBUG_OK)) {
6169 if (msg->sl.st.v_l != 8) {
6170 msg->err_pos = 0;
6171 goto hdr_response_bad;
6172 }
6173
6174 if (rep->buf->p[4] != '/' ||
6175 !isdigit((unsigned char)rep->buf->p[5]) ||
6176 rep->buf->p[6] != '.' ||
6177 !isdigit((unsigned char)rep->buf->p[7])) {
6178 msg->err_pos = 4;
6179 goto hdr_response_bad;
6180 }
6181 }
6182
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6183 /* check if the response is HTTP/1.1 or above */
6184 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6185 ((rep->buf->p[5] > '1') ||
6186 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6187 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6188
6189 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]6190 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]6191
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6192 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6193 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6194
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6195 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]6196
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]6197 /* Adjust server's health based on status code. Note: status codes 501
6198 * and 505 are triggered on demand by client request, so we must not
6199 * count them as server failures.
6200 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6201 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6202 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6203 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6204 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6205 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6206 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6207
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6208 /*
6209 * 2: check for cacheability.
6210 */
6211
6212 switch (txn->status) {
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]6213 case 100:
6214 /*
6215 * We may be facing a 100-continue response, in which case this
6216 * is not the right response, and we're waiting for the next one.
6217 * Let's allow this response to go to the client and wait for the
6218 * next one.
6219 */
6220 hdr_idx_init(&txn->hdr_idx);
6221 msg->next -= channel_forward(rep, msg->next);
6222 msg->msg_state = HTTP_MSG_RPBEFORE;
6223 txn->status = 0;
6224 s->logs.t_data = -1; /* was not a response yet */
6225 goto next_one;
6226
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6227 case 200:
6228 case 203:
6229 case 206:
6230 case 300:
6231 case 301:
6232 case 410:
6233 /* RFC2616 @13.4:
6234 * "A response received with a status code of
6235 * 200, 203, 206, 300, 301 or 410 MAY be stored
6236 * by a cache (...) unless a cache-control
6237 * directive prohibits caching."
6238 *
6239 * RFC2616 @9.5: POST method :
6240 * "Responses to this method are not cacheable,
6241 * unless the response includes appropriate
6242 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6243 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6244 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6245 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6246 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
6247 break;
6248 default:
6249 break;
6250 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6251
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6252 /*
6253 * 3: we may need to capture headers
6254 */
6255 s->logs.logwait &= ~LW_RESP;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6256 if (unlikely((s->logs.logwait & LW_RSPHDR) && s->res_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6257 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6258 s->res_cap, sess->fe->rsp_cap);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6259
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6260 /* 4: determine the transfer-length according to RFC2616 #4.4, updated
6261 * by RFC7230#3.3.3 :
6262 *
6263 * The length of a message body is determined by one of the following
6264 * (in order of precedence):
6265 *
6266 * 1. Any response to a HEAD request and any response with a 1xx
6267 * (Informational), 204 (No Content), or 304 (Not Modified) status
6268 * code is always terminated by the first empty line after the
6269 * header fields, regardless of the header fields present in the
6270 * message, and thus cannot contain a message body.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6271 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6272 * 2. Any 2xx (Successful) response to a CONNECT request implies that
6273 * the connection will become a tunnel immediately after the empty
6274 * line that concludes the header fields. A client MUST ignore any
6275 * Content-Length or Transfer-Encoding header fields received in
6276 * such a message.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6277 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6278 * 3. If a Transfer-Encoding header field is present and the chunked
6279 * transfer coding (Section 4.1) is the final encoding, the message
6280 * body length is determined by reading and decoding the chunked
6281 * data until the transfer coding indicates the data is complete.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6282 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6283 * If a Transfer-Encoding header field is present in a response and
6284 * the chunked transfer coding is not the final encoding, the
6285 * message body length is determined by reading the connection until
6286 * it is closed by the server. If a Transfer-Encoding header field
6287 * is present in a request and the chunked transfer coding is not
6288 * the final encoding, the message body length cannot be determined
6289 * reliably; the server MUST respond with the 400 (Bad Request)
6290 * status code and then close the connection.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6291 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6292 * If a message is received with both a Transfer-Encoding and a
6293 * Content-Length header field, the Transfer-Encoding overrides the
6294 * Content-Length. Such a message might indicate an attempt to
6295 * perform request smuggling (Section 9.5) or response splitting
6296 * (Section 9.4) and ought to be handled as an error. A sender MUST
6297 * remove the received Content-Length field prior to forwarding such
6298 * a message downstream.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6299 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6300 * 4. If a message is received without Transfer-Encoding and with
6301 * either multiple Content-Length header fields having differing
6302 * field-values or a single Content-Length header field having an
6303 * invalid value, then the message framing is invalid and the
6304 * recipient MUST treat it as an unrecoverable error. If this is a
6305 * request message, the server MUST respond with a 400 (Bad Request)
6306 * status code and then close the connection. If this is a response
6307 * message received by a proxy, the proxy MUST close the connection
6308 * to the server, discard the received response, and send a 502 (Bad
6309 * Gateway) response to the client. If this is a response message
6310 * received by a user agent, the user agent MUST close the
6311 * connection to the server and discard the received response.
6312 *
6313 * 5. If a valid Content-Length header field is present without
6314 * Transfer-Encoding, its decimal value defines the expected message
6315 * body length in octets. If the sender closes the connection or
6316 * the recipient times out before the indicated number of octets are
6317 * received, the recipient MUST consider the message to be
6318 * incomplete and close the connection.
6319 *
6320 * 6. If this is a request message and none of the above are true, then
6321 * the message body length is zero (no message body is present).
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6322 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6323 * 7. Otherwise, this is a response message without a declared message
6324 * body length, so the message body length is determined by the
6325 * number of octets received prior to the server closing the
6326 * connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6327 */
6328
6329 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6330 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6331 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6332 * FIXME: should we parse anyway and return an error on chunked encoding ?
6333 */
6334 if (txn->meth == HTTP_METH_HEAD ||
6335 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6336 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6337 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]6338 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6339 goto skip_content_length;
6340 }
6341
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6342 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6343 ctx.idx = 0;
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]6344 while (http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6345 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6346 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
6347 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6348 /* bad transfer-encoding (chunked followed by something else) */
6349 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6350 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6351 break;
6352 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6353 }
6354
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6355 /* Chunked responses must have their content-length removed */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6356 ctx.idx = 0;
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6357 if (use_close_only || (msg->flags & HTTP_MSGF_TE_CHNK)) {
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6358 while (http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx))
6359 http_remove_header2(msg, &txn->hdr_idx, &ctx);
6360 }
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6361 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]6362 signed long long cl;
6363
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6364 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6365 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6366 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6367 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6368
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6369 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6370 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6371 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6372 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6373
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6374 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6375 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6376 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6377 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6378
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6379 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6380 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6381 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6382 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6383
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6384 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6385 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6386 }
6387
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6388 if (sess->fe->comp || s->be->comp)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6389 select_compression_response_header(s, rep->buf);
6390
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6391skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6392 /* Now we have to check if we need to modify the Connection header.
6393 * This is more difficult on the response than it is on the request,
6394 * because we can have two different HTTP versions and we don't know
6395 * how the client will interprete a response. For instance, let's say
6396 * that the client sends a keep-alive request in HTTP/1.0 and gets an
6397 * HTTP/1.1 response without any header. Maybe it will bound itself to
6398 * HTTP/1.0 because it only knows about it, and will consider the lack
6399 * of header as a close, or maybe it knows HTTP/1.1 and can consider
6400 * the lack of header as a keep-alive. Thus we will use two flags
6401 * indicating how a request MAY be understood by the client. In case
6402 * of multiple possibilities, we'll fix the header to be explicit. If
6403 * ambiguous cases such as both close and keepalive are seen, then we
6404 * will fall back to explicit close. Note that we won't take risks with
6405 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6406 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6407 */
6408
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6409 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
6410 txn->status == 101)) {
6411 /* Either we've established an explicit tunnel, or we're
6412 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6413 * to understand the next protocols. We have to switch to tunnel
6414 * mode, so that we transfer the request and responses then let
6415 * this protocol pass unmodified. When we later implement specific
6416 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6417 * header which contains information about that protocol for
6418 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6419 */
6420 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
6421 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6422 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
6423 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6424 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6425 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6426 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6427
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6428 /* this situation happens when combining pretend-keepalive with httpclose. */
6429 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6430 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6431 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6432 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
6433
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6434 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6435 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6436 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
6437 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6438
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6439 /* now adjust header transformations depending on current state */
6440 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
6441 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
6442 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6443 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6444 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6445 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6446 else { /* SCL / KAL */
6447 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6448 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6449 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6450 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6451
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6452 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6453 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6454
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6455 /* Some keep-alive responses are converted to Server-close if
6456 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6457 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6458 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
6459 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6460 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6461 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6462 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6463 }
6464
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6465 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6466 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6467
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6468 /* end of job, return OK */
6469 rep->analysers &= ~an_bit;
6470 rep->analyse_exp = TICK_ETERNITY;
6471 channel_auto_close(rep);
6472 return 1;
6473
6474 abort_keep_alive:
6475 /* A keep-alive request to the server failed on a network error.
6476 * The client is required to retry. We need to close without returning
6477 * any other information so that the client retries.
6478 */
6479 txn->status = 0;
6480 rep->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6481 s->req.analysers = 0;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6482 channel_auto_close(rep);
6483 s->logs.logwait = 0;
6484 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6485 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6486 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6487 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6488 return 0;
6489}
6490
6491/* This function performs all the processing enabled for the current response.
6492 * It normally returns 1 unless it wants to break. It relies on buffers flags,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6493 * and updates s->res.analysers. It might make sense to explode it into several
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6494 * other functions. It works like process_request (see indications above).
6495 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6496int 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]6497{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6498 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6499 struct http_txn *txn = s->txn;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6500 struct http_msg *msg = &txn->rsp;
6501 struct proxy *cur_proxy;
6502 struct cond_wordlist *wl;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]6503 enum rule_result ret = HTTP_RULE_RES_CONT;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6504
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6505 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]6506 now_ms, __FUNCTION__,
6507 s,
6508 rep,
6509 rep->rex, rep->wex,
6510 rep->flags,
6511 rep->buf->i,
6512 rep->analysers);
6513
6514 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
6515 return 0;
6516
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6517 /* The stats applet needs to adjust the Connection header but we don't
6518 * apply any filter there.
6519 */
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6520 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
6521 rep->analysers &= ~an_bit;
6522 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6523 goto skip_filters;
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6524 }
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6525
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6526 /*
6527 * We will have to evaluate the filters.
6528 * As opposed to version 1.2, now they will be evaluated in the
6529 * filters order and not in the header order. This means that
6530 * each filter has to be validated among all headers.
6531 *
6532 * Filters are tried with ->be first, then with ->fe if it is
6533 * different from ->be.
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6534 *
6535 * Maybe we are in resume condiion. In this case I choose the
6536 * "struct proxy" which contains the rule list matching the resume
6537 * pointer. If none of theses "struct proxy" match, I initialise
6538 * the process with the first one.
6539 *
6540 * In fact, I check only correspondance betwwen the current list
6541 * pointer and the ->fe rule list. If it doesn't match, I initialize
6542 * the loop with the ->be.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6543 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6544 if (s->current_rule_list == &sess->fe->http_res_rules)
6545 cur_proxy = sess->fe;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6546 else
6547 cur_proxy = s->be;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6548 while (1) {
6549 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6550
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6551 /* evaluate http-response rules */
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6552 if (ret == HTTP_RULE_RES_CONT) {
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]6553 ret = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, s);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]6554
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]6555 if (ret == HTTP_RULE_RES_BADREQ)
6556 goto return_srv_prx_502;
6557
6558 if (ret == HTTP_RULE_RES_DONE) {
6559 rep->analysers &= ~an_bit;
6560 rep->analyse_exp = TICK_ETERNITY;
6561 return 1;
6562 }
6563 }
6564
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6565 /* we need to be called again. */
6566 if (ret == HTTP_RULE_RES_YIELD) {
6567 channel_dont_close(rep);
6568 return 0;
6569 }
6570
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6571 /* try headers filters */
6572 if (rule_set->rsp_exp != NULL) {
6573 if (apply_filters_to_response(s, rep, rule_set) < 0) {
6574 return_bad_resp:
6575 if (objt_server(s->target)) {
6576 objt_server(s->target)->counters.failed_resp++;
6577 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6578 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6579 s->be->be_counters.failed_resp++;
6580 return_srv_prx_502:
6581 rep->analysers = 0;
6582 txn->status = 502;
6583 s->logs.t_data = -1; /* was not a valid response */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6584 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6585 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6586 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6587 if (!(s->flags & SF_ERR_MASK))
6588 s->flags |= SF_ERR_PRXCOND;
6589 if (!(s->flags & SF_FINST_MASK))
6590 s->flags |= SF_FINST_H;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6591 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6592 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6593 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6594
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6595 /* has the response been denied ? */
6596 if (txn->flags & TX_SVDENY) {
6597 if (objt_server(s->target))
6598 objt_server(s->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6599
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6600 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6601 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6602 if (sess->listener->counters)
6603 sess->listener->counters->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6604
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6605 goto return_srv_prx_502;
6606 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]6607
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6608 /* add response headers from the rule sets in the same order */
6609 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6610 if (txn->status < 200 && txn->status != 101)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6611 break;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6612 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]6613 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]6614 ret = acl_pass(ret);
6615 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
6616 ret = !ret;
6617 if (!ret)
6618 continue;
6619 }
6620 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
6621 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6622 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6623
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6624 /* check whether we're already working on the frontend */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6625 if (cur_proxy == sess->fe)
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6626 break;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6627 cur_proxy = sess->fe;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6628 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6629
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6630 /* After this point, this anayzer can't return yield, so we can
6631 * remove the bit corresponding to this analyzer from the list.
6632 *
6633 * Note that the intermediate returns and goto found previously
6634 * reset the analyzers.
6635 */
6636 rep->analysers &= ~an_bit;
6637 rep->analyse_exp = TICK_ETERNITY;
6638
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6639 /* OK that's all we can do for 1xx responses */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6640 if (unlikely(txn->status < 200 && txn->status != 101))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6641 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6642
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6643 /*
6644 * Now check for a server cookie.
6645 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]6646 if (s->be->cookie_name || sess->fe->capture_name || (s->be->options & PR_O_CHK_CACHE))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6647 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6648
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6649 /*
6650 * Check for cache-control or pragma headers if required.
6651 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6652 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]6653 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6654
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6655 /*
6656 * Add server cookie in the response if needed
6657 */
6658 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
6659 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6660 (!(s->flags & SF_DIRECT) ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6661 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
6662 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
6663 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
6664 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
6665 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6666 !(s->flags & SF_IGNORE_PRST)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6667 /* the server is known, it's not the one the client requested, or the
6668 * cookie's last seen date needs to be refreshed. We have to
6669 * insert a set-cookie here, except if we want to insert only on POST
6670 * requests and this one isn't. Note that servers which don't have cookies
6671 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6672 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6673 if (!objt_server(s->target)->cookie) {
6674 chunk_printf(&trash,
6675 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
6676 s->be->cookie_name);
6677 }
6678 else {
6679 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]6680
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6681 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
6682 /* emit last_date, which is mandatory */
6683 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6684 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6685 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6686
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6687 if (s->be->cookie_maxlife) {
6688 /* emit first_date, which is either the original one or
6689 * the current date.
6690 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6691 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6692 s30tob64(txn->cookie_first_date ?
6693 txn->cookie_first_date >> 2 :
6694 (date.tv_sec+3) >> 2, trash.str + trash.len);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6695 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6696 }
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6697 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6698 chunk_appendf(&trash, "; path=/");
6699 }
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6700
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6701 if (s->be->cookie_domain)
6702 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6703
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6704 if (s->be->ck_opts & PR_CK_HTTPONLY)
6705 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6706
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6707 if (s->be->ck_opts & PR_CK_SECURE)
6708 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6709
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6710 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
6711 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6712
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6713 txn->flags &= ~TX_SCK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6714 if (objt_server(s->target)->cookie && (s->flags & SF_DIRECT))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6715 /* the server did not change, only the date was updated */
6716 txn->flags |= TX_SCK_UPDATED;
6717 else
6718 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6719
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6720 /* Here, we will tell an eventual cache on the client side that we don't
6721 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6722 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6723 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6724 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6725 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6726
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6727 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6728
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6729 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
6730 "Cache-control: private", 22) < 0))
6731 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6732 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6733 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6734
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6735 /*
6736 * Check if result will be cacheable with a cookie.
6737 * We'll block the response if security checks have caught
6738 * nasty things such as a cacheable cookie.
6739 */
6740 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6741 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
6742 (s->be->options & PR_O_CHK_CACHE)) {
6743 /* we're in presence of a cacheable response containing
6744 * a set-cookie header. We'll block it as requested by
6745 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6746 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6747 if (objt_server(s->target))
6748 objt_server(s->target)->counters.failed_secu++;
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6749
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6750 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6751 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6752 if (sess->listener->counters)
6753 sess->listener->counters->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6754
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6755 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
6756 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6757 send_log(s->be, LOG_ALERT,
6758 "Blocking cacheable cookie in response from instance %s, server %s.\n",
6759 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6760 goto return_srv_prx_502;
6761 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6762
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6763 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6764 /*
6765 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
6766 * If an "Upgrade" token is found, the header is left untouched in order
6767 * 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]6768 * if anything but "Upgrade" is present in the Connection header. We don't
6769 * want to touch any 101 response either since it's switching to another
6770 * protocol.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6771 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6772 if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) &&
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6773 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6774 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6775 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
6776 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6777
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6778 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6779 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6780 /* we want a keep-alive response here. Keep-alive header
6781 * required if either side is not 1.1.
6782 */
6783 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
6784 want_flags |= TX_CON_KAL_SET;
6785 }
6786 else {
6787 /* we want a close response here. Close header required if
6788 * the server is 1.1, regardless of the client.
6789 */
6790 if (msg->flags & HTTP_MSGF_VER_11)
6791 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6792 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6793
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6794 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
6795 http_change_connection_header(txn, msg, want_flags);
6796 }
6797
6798 skip_header_mangling:
6799 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
6800 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
6801 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6802
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6803 /* if the user wants to log as soon as possible, without counting
6804 * bytes from the server, then this is the right moment. We have
6805 * to temporarily assign bytes_out to log what we currently have.
6806 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6807 if (!LIST_ISEMPTY(&sess->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6808 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
6809 s->logs.bytes_out = txn->rsp.eoh;
6810 s->do_log(s);
6811 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6812 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6813 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6814}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6815
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6816/* This function is an analyser which forwards response body (including chunk
6817 * sizes if any). It is called as soon as we must forward, even if we forward
6818 * zero byte. The only situation where it must not be called is when we're in
6819 * tunnel mode and we want to forward till the close. It's used both to forward
6820 * remaining data and to resync after end of body. It expects the msg_state to
6821 * 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]6822 * 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]6823 *
6824 * It is capable of compressing response data both in content-length mode and
6825 * in chunked mode. The state machines follows different flows depending on
6826 * whether content-length and chunked modes are used, since there are no
6827 * trailers in content-length :
6828 *
6829 * chk-mode cl-mode
6830 * ,----- BODY -----.
6831 * / \
6832 * V size > 0 V chk-mode
6833 * .--> SIZE -------------> DATA -------------> CRLF
6834 * | | size == 0 | last byte |
6835 * | v final crlf v inspected |
6836 * | TRAILERS -----------> DONE |
6837 * | |
6838 * `----------------------------------------------'
6839 *
6840 * Compression only happens in the DATA state, and must be flushed in final
6841 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
6842 * is performed at once on final states for all bytes parsed, or when leaving
6843 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6844 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6845int http_response_forward_body(struct stream *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6846{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6847 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6848 struct http_txn *txn = s->txn;
6849 struct http_msg *msg = &s->txn->rsp;
Willy Tarreauf2f7d6b2014-11-24 11:55:08 +0100[diff] [blame]6850 static struct buffer *tmpbuf = &buf_empty;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6851 int compressing = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6852 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6853
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6854 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6855 return 0;
6856
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6857 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]6858 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6859 !s->req.analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6860 /* Output closed while we were sending data. We must abort and
6861 * wake the other side up.
6862 */
6863 msg->msg_state = HTTP_MSG_ERROR;
6864 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6865 return 1;
6866 }
6867
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6868 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6869 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6870
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]6871 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6872 /* we have msg->sov which points to the first byte of message
6873 * body, and res->buf.p still points to the beginning of the
6874 * message. We forward the headers now, as we don't need them
6875 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6876 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6877 b_adv(res->buf, msg->sov);
6878 msg->next -= msg->sov;
6879 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6880
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6881 /* The previous analysers guarantee that the state is somewhere
6882 * between MSG_BODY and the first MSG_DATA. So msg->sol and
6883 * msg->next are always correct.
6884 */
6885 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
6886 if (msg->flags & HTTP_MSGF_TE_CHNK)
6887 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
6888 else
6889 msg->msg_state = HTTP_MSG_DATA;
6890 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6891 }
6892
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6893 if (res->to_forward) {
6894 /* We can't process the buffer's contents yet */
6895 res->flags |= CF_WAKE_WRITE;
6896 goto missing_data;
6897 }
6898
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6899 if (unlikely(s->comp_algo != NULL) && msg->msg_state < HTTP_MSG_TRAILERS) {
6900 /* We need a compression buffer in the DATA state to put the
6901 * output of compressed data, and in CRLF state to let the
6902 * TRAILERS state finish the job of removing the trailing CRLF.
6903 */
Willy Tarreauf2f7d6b2014-11-24 11:55:08 +0100[diff] [blame]6904 if (unlikely(!tmpbuf->size)) {
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6905 /* this is the first time we need the compression buffer */
Willy Tarreaue583ea52014-11-24 11:30:16 +0100[diff] [blame]6906 if (b_alloc(&tmpbuf) == NULL)
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6907 goto aborted_xfer; /* no memory */
6908 }
6909
6910 ret = http_compression_buffer_init(s, res->buf, tmpbuf);
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6911 if (ret < 0) {
6912 res->flags |= CF_WAKE_WRITE;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6913 goto missing_data; /* not enough spaces in buffers */
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6914 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6915 compressing = 1;
6916 }
6917
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6918 while (1) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6919 switch (msg->msg_state - HTTP_MSG_DATA) {
6920 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6921 /* we may have some pending data starting at res->buf->p */
6922 if (unlikely(s->comp_algo)) {
Willy Tarreau7f2f8d52014-04-18 00:20:14 +0200[diff] [blame]6923 ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6924 if (ret < 0)
6925 goto aborted_xfer;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6926
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6927 if (msg->chunk_len) {
6928 /* input empty or output full */
6929 if (res->buf->i > msg->next)
6930 res->flags |= CF_WAKE_WRITE;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6931 goto missing_data;
6932 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6933 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6934 else {
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6935 if (msg->chunk_len > res->buf->i - msg->next) {
6936 /* output full */
6937 res->flags |= CF_WAKE_WRITE;
6938 goto missing_data;
6939 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6940 msg->next += msg->chunk_len;
6941 msg->chunk_len = 0;
6942 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6943
6944 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6945 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6946 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6947 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6948 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6949 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6950 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6951 /* fall through for HTTP_MSG_CHUNK_CRLF */
6952
6953 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
6954 /* we want the CRLF after the data */
6955
6956 ret = http_skip_chunk_crlf(msg);
6957 if (ret == 0)
6958 goto missing_data;
6959 else if (ret < 0) {
6960 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6961 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]6962 goto return_bad_res;
6963 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6964 /* we're in MSG_CHUNK_SIZE now, fall through */
6965
6966 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6967 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]6968 * set ->next to point to the body and switch to DATA or
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6969 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6970 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6971
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6972 ret = http_parse_chunk_size(msg);
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6973 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6974 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6975 else if (ret < 0) {
6976 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6977 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]6978 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6979 }
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]6980 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6981 break;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6982
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6983 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6984 if (unlikely(compressing)) {
6985 /* we need to flush output contents before syncing FSMs */
6986 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6987 compressing = 0;
6988 }
6989
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6990 ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6991 if (ret == 0)
6992 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6993 else if (ret < 0) {
6994 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6995 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]6996 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6997 }
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6998 /* we're in HTTP_MSG_DONE now, fall through */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6999
7000 default:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]7001 /* other states, DONE...TUNNEL */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]7002 if (unlikely(compressing)) {
7003 /* we need to flush output contents before syncing FSMs */
7004 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
7005 compressing = 0;
7006 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]7007
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]7008 /* we may have some pending data starting at res->buf->p
7009 * such as a last chunk of data or trailers.
7010 */
7011 b_adv(res->buf, msg->next);
7012 msg->next = 0;
7013
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]7014 ret = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]7015 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7016 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
7017 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]7018 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]7019
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]7020 if (http_resync_states(s)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]7021 /* some state changes occurred, maybe the analyser
7022 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]7023 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]7024 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7025 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]7026 /* response errors are most likely due to
7027 * the client aborting the transfer.
7028 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7029 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]7030 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]7031 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7032 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, sess->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]7033 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]7034 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]7035 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]7036 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]7037 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7038 }
7039 }
7040
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7041 missing_data:
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]7042 /* we may have some pending data starting at res->buf->p */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]7043 if (unlikely(compressing)) {
7044 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]7045 compressing = 0;
7046 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]7047
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]7048 if ((s->comp_algo == NULL || msg->msg_state >= HTTP_MSG_TRAILERS)) {
7049 b_adv(res->buf, msg->next);
7050 msg->next = 0;
7051 msg->chunk_len -= channel_forward(res, msg->chunk_len);
7052 }
7053
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]7054 if (res->flags & CF_SHUTW)
7055 goto aborted_xfer;
7056
7057 /* stop waiting for data if the input is closed before the end. If the
7058 * client side was already closed, it means that the client has aborted,
7059 * so we don't want to count this as a server abort. Otherwise it's a
7060 * server abort.
7061 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7062 if (res->flags & CF_SHUTR) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7063 if ((s->req.flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]7064 goto aborted_xfer;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7065 if (!(s->flags & SF_ERR_MASK))
7066 s->flags |= SF_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]7067 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7068 if (objt_server(s->target))
7069 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7070 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]7071 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]7072
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]7073 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7074 if (!s->req.analysers)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]7075 goto return_bad_res;
7076
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7077 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7078 * 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]7079 * Similarly, with keep-alive on the client side, we don't want to forward a
7080 * close.
7081 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]7082 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7083 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
7084 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]7085 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7086
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7087 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7088 * 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]7089 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]7090 * modes are already handled by the stream sock layer. We must not do
7091 * this in content-length mode because it could present the MSG_MORE
7092 * flag with the last block of forwarded data, which would cause an
7093 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7094 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]7095 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7096 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7097
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7098 /* the stream handler will take care of timeouts and errors */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7099 return 0;
7100
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]7101 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]7102 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7103 if (objt_server(s->target))
7104 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7105
7106 return_bad_res_stats_ok:
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]7107 if (unlikely(compressing)) {
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]7108 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]7109 compressing = 0;
7110 }
7111
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]7112 /* we may have some pending data starting at res->buf->p */
7113 if (s->comp_algo == NULL) {
7114 b_adv(res->buf, msg->next);
7115 msg->next = 0;
7116 }
7117
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7118 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]7119 /* don't send any error message as we're in the body */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]7120 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7121 res->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7122 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]7123 if (objt_server(s->target))
7124 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7125
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7126 if (!(s->flags & SF_ERR_MASK))
7127 s->flags |= SF_ERR_PRXCOND;
7128 if (!(s->flags & SF_FINST_MASK))
7129 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7130 return 0;
7131
7132 aborted_xfer:
Willy Tarreau6fef8ae2014-04-22 21:22:06 +0200[diff] [blame]7133 if (unlikely(compressing)) {
7134 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
7135 compressing = 0;
7136 }
7137
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7138 txn->rsp.msg_state = HTTP_MSG_ERROR;
7139 /* don't send any error message as we're in the body */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]7140 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7141 res->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7142 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]7143
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7144 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]7145 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7146 if (objt_server(s->target))
7147 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7148
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7149 if (!(s->flags & SF_ERR_MASK))
7150 s->flags |= SF_ERR_CLICL;
7151 if (!(s->flags & SF_FINST_MASK))
7152 s->flags |= SF_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7153 return 0;
7154}
7155
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7156/* Iterate the same filter through all request headers.
7157 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7158 * Since it can manage the switch to another backend, it updates the per-proxy
7159 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7160 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7161int 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]7162{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7163 char *cur_ptr, *cur_end, *cur_next;
7164 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7165 struct http_txn *txn = s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7166 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7167 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]7168
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7169 last_hdr = 0;
7170
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7171 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7172 old_idx = 0;
7173
7174 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7175 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7176 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7177 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7178 (exp->action == ACT_ALLOW ||
7179 exp->action == ACT_DENY ||
7180 exp->action == ACT_TARPIT))
7181 return 0;
7182
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7183 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7184 if (!cur_idx)
7185 break;
7186
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7187 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7188 cur_ptr = cur_next;
7189 cur_end = cur_ptr + cur_hdr->len;
7190 cur_next = cur_end + cur_hdr->cr + 1;
7191
7192 /* Now we have one header between cur_ptr and cur_end,
7193 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7194 */
7195
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7196 if (regex_exec_match2(exp->preg, cur_ptr, cur_end-cur_ptr, MAX_MATCH, pmatch, 0)) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7197 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7198 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7199 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7200 last_hdr = 1;
7201 break;
7202
7203 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7204 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7205 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7206 break;
7207
7208 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7209 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7210 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7211 break;
7212
7213 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7214 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7215 if (trash.len < 0)
7216 return -1;
7217
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7218 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7219 /* FIXME: if the user adds a newline in the replacement, the
7220 * index will not be recalculated for now, and the new line
7221 * will not be counted as a new header.
7222 */
7223
7224 cur_end += delta;
7225 cur_next += delta;
7226 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7227 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7228 break;
7229
7230 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7231 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7232 cur_next += delta;
7233
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7234 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7235 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7236 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7237 cur_hdr->len = 0;
7238 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7239 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7240 break;
7241
7242 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7243 }
7244
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7245 /* keep the link from this header to next one in case of later
7246 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7247 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7248 old_idx = cur_idx;
7249 }
7250 return 0;
7251}
7252
7253
7254/* Apply the filter to the request line.
7255 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7256 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7257 * Since it can manage the switch to another backend, it updates the per-proxy
7258 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7259 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7260int 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]7261{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7262 char *cur_ptr, *cur_end;
7263 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7264 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7265 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7266
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7267 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7268 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7269 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7270 (exp->action == ACT_ALLOW ||
7271 exp->action == ACT_DENY ||
7272 exp->action == ACT_TARPIT))
7273 return 0;
7274 else if (exp->action == ACT_REMOVE)
7275 return 0;
7276
7277 done = 0;
7278
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7279 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7280 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7281
7282 /* Now we have the request line between cur_ptr and cur_end */
7283
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7284 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]7285 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7286 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7287 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7288 done = 1;
7289 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7290
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7291 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7292 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7293 done = 1;
7294 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7295
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7296 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7297 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7298 done = 1;
7299 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7300
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7301 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7302 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7303 if (trash.len < 0)
7304 return -1;
7305
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7306 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7307 /* FIXME: if the user adds a newline in the replacement, the
7308 * index will not be recalculated for now, and the new line
7309 * will not be counted as a new header.
7310 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7311
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7312 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7313 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7314 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7315 HTTP_MSG_RQMETH,
7316 cur_ptr, cur_end + 1,
7317 NULL, NULL);
7318 if (unlikely(!cur_end))
7319 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7320
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7321 /* we have a full request and we know that we have either a CR
7322 * or an LF at <ptr>.
7323 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7324 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
7325 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]7326 /* there is no point trying this regex on headers */
7327 return 1;
7328 }
7329 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7330 return done;
7331}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]7332
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7333
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7334
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7335/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7336 * 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]7337 * 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]7338 * unparsable request. Since it can manage the switch to another backend, it
7339 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7340 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7341int apply_filters_to_request(struct stream *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7342{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7343 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7344 struct http_txn *txn = s->txn;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7345 struct hdr_exp *exp;
7346
7347 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7348 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7349
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7350 /*
7351 * The interleaving of transformations and verdicts
7352 * makes it difficult to decide to continue or stop
7353 * the evaluation.
7354 */
7355
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7356 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
7357 break;
7358
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7359 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7360 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7361 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7362 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7363
7364 /* if this filter had a condition, evaluate it now and skip to
7365 * next filter if the condition does not match.
7366 */
7367 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7368 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]7369 ret = acl_pass(ret);
7370 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7371 ret = !ret;
7372
7373 if (!ret)
7374 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7375 }
7376
7377 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7378 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7379 if (unlikely(ret < 0))
7380 return -1;
7381
7382 if (likely(ret == 0)) {
7383 /* The filter did not match the request, it can be
7384 * iterated through all headers.
7385 */
Willy Tarreau34d4c3c2015-01-30 20:58:58 +0100[diff] [blame]7386 if (unlikely(apply_filter_to_req_headers(s, req, exp) < 0))
7387 return -1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7388 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7389 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7390 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7391}
7392
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7393
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7394/* Find the end of a cookie value contained between <s> and <e>. It works the
7395 * same way as with headers above except that the semi-colon also ends a token.
7396 * See RFC2965 for more information. Note that it requires a valid header to
7397 * return a valid result.
7398 */
7399char *find_cookie_value_end(char *s, const char *e)
7400{
7401 int quoted, qdpair;
7402
7403 quoted = qdpair = 0;
7404 for (; s < e; s++) {
7405 if (qdpair) qdpair = 0;
7406 else if (quoted) {
7407 if (*s == '\\') qdpair = 1;
7408 else if (*s == '"') quoted = 0;
7409 }
7410 else if (*s == '"') quoted = 1;
7411 else if (*s == ',' || *s == ';') return s;
7412 }
7413 return s;
7414}
7415
7416/* Delete a value in a header between delimiters <from> and <next> in buffer
7417 * <buf>. The number of characters displaced is returned, and the pointer to
7418 * the first delimiter is updated if required. The function tries as much as
7419 * possible to respect the following principles :
7420 * - replace <from> delimiter by the <next> one unless <from> points to a
7421 * colon, in which case <next> is simply removed
7422 * - set exactly one space character after the new first delimiter, unless
7423 * there are not enough characters in the block being moved to do so.
7424 * - remove unneeded spaces before the previous delimiter and after the new
7425 * one.
7426 *
7427 * It is the caller's responsibility to ensure that :
7428 * - <from> points to a valid delimiter or the colon ;
7429 * - <next> points to a valid delimiter or the final CR/LF ;
7430 * - there are non-space chars before <from> ;
7431 * - there is a CR/LF at or after <next>.
7432 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]7433int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7434{
7435 char *prev = *from;
7436
7437 if (*prev == ':') {
7438 /* We're removing the first value, preserve the colon and add a
7439 * space if possible.
7440 */
7441 if (!http_is_crlf[(unsigned char)*next])
7442 next++;
7443 prev++;
7444 if (prev < next)
7445 *prev++ = ' ';
7446
7447 while (http_is_spht[(unsigned char)*next])
7448 next++;
7449 } else {
7450 /* Remove useless spaces before the old delimiter. */
7451 while (http_is_spht[(unsigned char)*(prev-1)])
7452 prev--;
7453 *from = prev;
7454
7455 /* copy the delimiter and if possible a space if we're
7456 * not at the end of the line.
7457 */
7458 if (!http_is_crlf[(unsigned char)*next]) {
7459 *prev++ = *next++;
7460 if (prev + 1 < next)
7461 *prev++ = ' ';
7462 while (http_is_spht[(unsigned char)*next])
7463 next++;
7464 }
7465 }
7466 return buffer_replace2(buf, prev, next, NULL, 0);
7467}
7468
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7469/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7470 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7471 * desirable to call it only when needed. This code is quite complex because
7472 * of the multiple very crappy and ambiguous syntaxes we have to support. it
7473 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7474 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7475void manage_client_side_cookies(struct stream *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7476{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7477 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7478 struct session *sess = s->sess;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7479 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7480 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7481 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
7482 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7483
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7484 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]7485 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7486 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7487
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7488 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7489 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7490 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7491
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7492 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7493 hdr_beg = hdr_next;
7494 hdr_end = hdr_beg + cur_hdr->len;
7495 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7496
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7497 /* We have one full header between hdr_beg and hdr_end, and the
7498 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7499 * "Cookie:" headers.
7500 */
7501
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7502 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7503 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7504 old_idx = cur_idx;
7505 continue;
7506 }
7507
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7508 del_from = NULL; /* nothing to be deleted */
7509 preserve_hdr = 0; /* assume we may kill the whole header */
7510
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7511 /* Now look for cookies. Conforming to RFC2109, we have to support
7512 * attributes whose name begin with a '$', and associate them with
7513 * the right cookie, if we want to delete this cookie.
7514 * So there are 3 cases for each cookie read :
7515 * 1) it's a special attribute, beginning with a '$' : ignore it.
7516 * 2) it's a server id cookie that we *MAY* want to delete : save
7517 * some pointers on it (last semi-colon, beginning of cookie...)
7518 * 3) it's an application cookie : we *MAY* have to delete a previous
7519 * "special" cookie.
7520 * At the end of loop, if a "special" cookie remains, we may have to
7521 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7522 * *MUST* delete it.
7523 *
7524 * Note: RFC2965 is unclear about the processing of spaces around
7525 * the equal sign in the ATTR=VALUE form. A careful inspection of
7526 * the RFC explicitly allows spaces before it, and not within the
7527 * tokens (attrs or values). An inspection of RFC2109 allows that
7528 * too but section 10.1.3 lets one think that spaces may be allowed
7529 * after the equal sign too, resulting in some (rare) buggy
7530 * implementations trying to do that. So let's do what servers do.
7531 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
7532 * allowed quoted strings in values, with any possible character
7533 * after a backslash, including control chars and delimitors, which
7534 * causes parsing to become ambiguous. Browsers also allow spaces
7535 * within values even without quotes.
7536 *
7537 * We have to keep multiple pointers in order to support cookie
7538 * removal at the beginning, middle or end of header without
7539 * corrupting the header. All of these headers are valid :
7540 *
7541 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
7542 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
7543 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
7544 * | | | | | | | | |
7545 * | | | | | | | | hdr_end <--+
7546 * | | | | | | | +--> next
7547 * | | | | | | +----> val_end
7548 * | | | | | +-----------> val_beg
7549 * | | | | +--------------> equal
7550 * | | | +----------------> att_end
7551 * | | +---------------------> att_beg
7552 * | +--------------------------> prev
7553 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7554 */
7555
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7556 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
7557 /* Iterate through all cookies on this line */
7558
7559 /* find att_beg */
7560 att_beg = prev + 1;
7561 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7562 att_beg++;
7563
7564 /* find att_end : this is the first character after the last non
7565 * space before the equal. It may be equal to hdr_end.
7566 */
7567 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7568
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7569 while (equal < hdr_end) {
7570 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7571 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7572 if (http_is_spht[(unsigned char)*equal++])
7573 continue;
7574 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7575 }
7576
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7577 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7578 * is between <att_beg> and <equal>, both may be identical.
7579 */
7580
7581 /* look for end of cookie if there is an equal sign */
7582 if (equal < hdr_end && *equal == '=') {
7583 /* look for the beginning of the value */
7584 val_beg = equal + 1;
7585 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7586 val_beg++;
7587
7588 /* find the end of the value, respecting quotes */
7589 next = find_cookie_value_end(val_beg, hdr_end);
7590
7591 /* make val_end point to the first white space or delimitor after the value */
7592 val_end = next;
7593 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7594 val_end--;
7595 } else {
7596 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7597 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7598
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7599 /* We have nothing to do with attributes beginning with '$'. However,
7600 * they will automatically be removed if a header before them is removed,
7601 * since they're supposed to be linked together.
7602 */
7603 if (*att_beg == '$')
7604 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7605
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7606 /* Ignore cookies with no equal sign */
7607 if (equal == next) {
7608 /* This is not our cookie, so we must preserve it. But if we already
7609 * scheduled another cookie for removal, we cannot remove the
7610 * complete header, but we can remove the previous block itself.
7611 */
7612 preserve_hdr = 1;
7613 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7614 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7615 val_end += delta;
7616 next += delta;
7617 hdr_end += delta;
7618 hdr_next += delta;
7619 cur_hdr->len += delta;
7620 http_msg_move_end(&txn->req, delta);
7621 prev = del_from;
7622 del_from = NULL;
7623 }
7624 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7625 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7626
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7627 /* if there are spaces around the equal sign, we need to
7628 * strip them otherwise we'll get trouble for cookie captures,
7629 * or even for rewrites. Since this happens extremely rarely,
7630 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7631 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7632 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7633 int stripped_before = 0;
7634 int stripped_after = 0;
7635
7636 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7637 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7638 equal += stripped_before;
7639 val_beg += stripped_before;
7640 }
7641
7642 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7643 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7644 val_beg += stripped_after;
7645 stripped_before += stripped_after;
7646 }
7647
7648 val_end += stripped_before;
7649 next += stripped_before;
7650 hdr_end += stripped_before;
7651 hdr_next += stripped_before;
7652 cur_hdr->len += stripped_before;
7653 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7654 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7655 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7656
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7657 /* First, let's see if we want to capture this cookie. We check
7658 * that we don't already have a client side cookie, because we
7659 * can only capture one. Also as an optimisation, we ignore
7660 * cookies shorter than the declared name.
7661 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7662 if (sess->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7663 (val_end - att_beg >= sess->fe->capture_namelen) &&
7664 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7665 int log_len = val_end - att_beg;
7666
7667 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7668 Alert("HTTP logging : out of memory.\n");
7669 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7670 if (log_len > sess->fe->capture_len)
7671 log_len = sess->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7672 memcpy(txn->cli_cookie, att_beg, log_len);
7673 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7674 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7675 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7676
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7677 /* Persistence cookies in passive, rewrite or insert mode have the
7678 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7679 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7680 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7681 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7682 * For cookies in prefix mode, the form is :
7683 *
7684 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7685 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7686 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
7687 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
7688 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7689 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7690
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7691 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7692 * have the server ID between val_beg and delim, and the original cookie between
7693 * delim+1 and val_end. Otherwise, delim==val_end :
7694 *
7695 * Cookie: NAME=SRV; # in all but prefix modes
7696 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7697 * | || || | |+-> next
7698 * | || || | +--> val_end
7699 * | || || +---------> delim
7700 * | || |+------------> val_beg
7701 * | || +-------------> att_end = equal
7702 * | |+-----------------> att_beg
7703 * | +------------------> prev
7704 * +-------------------------> hdr_beg
7705 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7706
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7707 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7708 for (delim = val_beg; delim < val_end; delim++)
7709 if (*delim == COOKIE_DELIM)
7710 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7711 } else {
7712 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7713 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7714 /* Now check if the cookie contains a date field, which would
7715 * appear after a vertical bar ('|') just after the server name
7716 * and before the delimiter.
7717 */
7718 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7719 if (vbar1) {
7720 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7721 * right is the last seen date. It is a base64 encoded
7722 * 30-bit value representing the UNIX date since the
7723 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7724 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7725 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7726 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7727 if (val_end - vbar1 >= 5) {
7728 val = b64tos30(vbar1);
7729 if (val > 0)
7730 txn->cookie_last_date = val << 2;
7731 }
7732 /* look for a second vertical bar */
7733 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7734 if (vbar1 && (val_end - vbar1 > 5)) {
7735 val = b64tos30(vbar1 + 1);
7736 if (val > 0)
7737 txn->cookie_first_date = val << 2;
7738 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7739 }
7740 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7741
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7742 /* if the cookie has an expiration date and the proxy wants to check
7743 * it, then we do that now. We first check if the cookie is too old,
7744 * then only if it has expired. We detect strict overflow because the
7745 * time resolution here is not great (4 seconds). Cookies with dates
7746 * in the future are ignored if their offset is beyond one day. This
7747 * allows an admin to fix timezone issues without expiring everyone
7748 * and at the same time avoids keeping unwanted side effects for too
7749 * long.
7750 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7751 if (txn->cookie_first_date && s->be->cookie_maxlife &&
7752 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7753 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7754 txn->flags &= ~TX_CK_MASK;
7755 txn->flags |= TX_CK_OLD;
7756 delim = val_beg; // let's pretend we have not found the cookie
7757 txn->cookie_first_date = 0;
7758 txn->cookie_last_date = 0;
7759 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7760 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
7761 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7762 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7763 txn->flags &= ~TX_CK_MASK;
7764 txn->flags |= TX_CK_EXPIRED;
7765 delim = val_beg; // let's pretend we have not found the cookie
7766 txn->cookie_first_date = 0;
7767 txn->cookie_last_date = 0;
7768 }
7769
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7770 /* Here, we'll look for the first running server which supports the cookie.
7771 * This allows to share a same cookie between several servers, for example
7772 * to dedicate backup servers to specific servers only.
7773 * However, to prevent clients from sticking to cookie-less backup server
7774 * when they have incidentely learned an empty cookie, we simply ignore
7775 * empty cookies and mark them as invalid.
7776 * The same behaviour is applied when persistence must be ignored.
7777 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7778 if ((delim == val_beg) || (s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7779 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7780
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7781 while (srv) {
7782 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7783 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7784 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7785 (s->be->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7786 (s->flags & SF_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7787 /* we found the server and we can use it */
7788 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7789 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7790 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7791 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7792 break;
7793 } else {
7794 /* we found a server, but it's down,
7795 * mark it as such and go on in case
7796 * another one is available.
7797 */
7798 txn->flags &= ~TX_CK_MASK;
7799 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7800 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7801 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7802 srv = srv->next;
7803 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7804
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7805 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7806 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7807 txn->flags &= ~TX_CK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7808 if ((s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7809 txn->flags |= TX_CK_UNUSED;
7810 else
7811 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7812 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7813
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7814 /* depending on the cookie mode, we may have to either :
7815 * - delete the complete cookie if we're in insert+indirect mode, so that
7816 * the server never sees it ;
7817 * - remove the server id from the cookie value, and tag the cookie as an
7818 * application cookie so that it does not get accidentely removed later,
7819 * if we're in cookie prefix mode
7820 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7821 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7822 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7823
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7824 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7825 val_end += delta;
7826 next += delta;
7827 hdr_end += delta;
7828 hdr_next += delta;
7829 cur_hdr->len += delta;
7830 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7831
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7832 del_from = NULL;
7833 preserve_hdr = 1; /* we want to keep this cookie */
7834 }
7835 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7836 (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]7837 del_from = prev;
7838 }
7839 } else {
7840 /* This is not our cookie, so we must preserve it. But if we already
7841 * scheduled another cookie for removal, we cannot remove the
7842 * complete header, but we can remove the previous block itself.
7843 */
7844 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7845
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7846 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7847 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7848 if (att_beg >= del_from)
7849 att_beg += delta;
7850 if (att_end >= del_from)
7851 att_end += delta;
7852 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7853 val_end += delta;
7854 next += delta;
7855 hdr_end += delta;
7856 hdr_next += delta;
7857 cur_hdr->len += delta;
7858 http_msg_move_end(&txn->req, delta);
7859 prev = del_from;
7860 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7861 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7862 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7863
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7864 /* continue with next cookie on this header line */
7865 att_beg = next;
7866 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7867
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7868 /* There are no more cookies on this line.
7869 * We may still have one (or several) marked for deletion at the
7870 * end of the line. We must do this now in two ways :
7871 * - if some cookies must be preserved, we only delete from the
7872 * mark to the end of line ;
7873 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7874 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7875 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7876 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7877 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7878 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7879 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7880 cur_hdr->len += delta;
7881 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7882 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7883
7884 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7885 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7886 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7887 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7888 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7889 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7890 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7891 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7892 }
7893
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7894 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7895 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7896 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7897}
7898
7899
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7900/* Iterate the same filter through all response headers contained in <rtr>.
7901 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7902 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7903int 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]7904{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7905 char *cur_ptr, *cur_end, *cur_next;
7906 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7907 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7908 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7909 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7910
7911 last_hdr = 0;
7912
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7913 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7914 old_idx = 0;
7915
7916 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7917 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7918 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7919 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7920 (exp->action == ACT_ALLOW ||
7921 exp->action == ACT_DENY))
7922 return 0;
7923
7924 cur_idx = txn->hdr_idx.v[old_idx].next;
7925 if (!cur_idx)
7926 break;
7927
7928 cur_hdr = &txn->hdr_idx.v[cur_idx];
7929 cur_ptr = cur_next;
7930 cur_end = cur_ptr + cur_hdr->len;
7931 cur_next = cur_end + cur_hdr->cr + 1;
7932
7933 /* Now we have one header between cur_ptr and cur_end,
7934 * and the next header starts at cur_next.
7935 */
7936
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7937 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]7938 switch (exp->action) {
7939 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7940 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7941 last_hdr = 1;
7942 break;
7943
7944 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7945 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7946 last_hdr = 1;
7947 break;
7948
7949 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7950 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7951 if (trash.len < 0)
7952 return -1;
7953
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7954 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7955 /* FIXME: if the user adds a newline in the replacement, the
7956 * index will not be recalculated for now, and the new line
7957 * will not be counted as a new header.
7958 */
7959
7960 cur_end += delta;
7961 cur_next += delta;
7962 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7963 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7964 break;
7965
7966 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7967 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7968 cur_next += delta;
7969
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7970 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7971 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7972 txn->hdr_idx.used--;
7973 cur_hdr->len = 0;
7974 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7975 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7976 break;
7977
7978 }
7979 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7980
7981 /* keep the link from this header to next one in case of later
7982 * removal of next header.
7983 */
7984 old_idx = cur_idx;
7985 }
7986 return 0;
7987}
7988
7989
7990/* Apply the filter to the status line in the response buffer <rtr>.
7991 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7992 * or -1 if a replacement resulted in an invalid status line.
7993 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7994int 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]7995{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7996 char *cur_ptr, *cur_end;
7997 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7998 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7999 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8000
8001
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8002 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8003 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8004 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8005 (exp->action == ACT_ALLOW ||
8006 exp->action == ACT_DENY))
8007 return 0;
8008 else if (exp->action == ACT_REMOVE)
8009 return 0;
8010
8011 done = 0;
8012
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8013 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]8014 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8015
8016 /* Now we have the status line between cur_ptr and cur_end */
8017
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]8018 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]8019 switch (exp->action) {
8020 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8021 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8022 done = 1;
8023 break;
8024
8025 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8026 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8027 done = 1;
8028 break;
8029
8030 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8031 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
8032 if (trash.len < 0)
8033 return -1;
8034
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8035 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8036 /* FIXME: if the user adds a newline in the replacement, the
8037 * index will not be recalculated for now, and the new line
8038 * will not be counted as a new header.
8039 */
8040
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8041 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8042 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8043 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]8044 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8045 cur_ptr, cur_end + 1,
8046 NULL, NULL);
8047 if (unlikely(!cur_end))
8048 return -1;
8049
8050 /* we have a full respnse and we know that we have either a CR
8051 * or an LF at <ptr>.
8052 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8053 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]8054 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]8055 /* there is no point trying this regex on headers */
8056 return 1;
8057 }
8058 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8059 return done;
8060}
8061
8062
8063
8064/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8065 * 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]8066 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
8067 * unparsable response.
8068 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8069int apply_filters_to_response(struct stream *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8070{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]8071 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8072 struct http_txn *txn = s->txn;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8073 struct hdr_exp *exp;
8074
8075 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8076 int ret;
8077
8078 /*
8079 * The interleaving of transformations and verdicts
8080 * makes it difficult to decide to continue or stop
8081 * the evaluation.
8082 */
8083
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8084 if (txn->flags & TX_SVDENY)
8085 break;
8086
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8087 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8088 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
8089 exp->action == ACT_PASS)) {
8090 exp = exp->next;
8091 continue;
8092 }
8093
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8094 /* if this filter had a condition, evaluate it now and skip to
8095 * next filter if the condition does not match.
8096 */
8097 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]8098 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]8099 ret = acl_pass(ret);
8100 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
8101 ret = !ret;
8102 if (!ret)
8103 continue;
8104 }
8105
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8106 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8107 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8108 if (unlikely(ret < 0))
8109 return -1;
8110
8111 if (likely(ret == 0)) {
8112 /* The filter did not match the response, it can be
8113 * iterated through all headers.
8114 */
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8115 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
8116 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8117 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8118 }
8119 return 0;
8120}
8121
8122
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8123/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]8124 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8125 * desirable to call it only when needed. This function is also used when we
8126 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8127 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8128void manage_server_side_cookies(struct stream *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8129{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8130 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8131 struct session *sess = s->sess;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8132 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8133 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8134 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8135 char *hdr_beg, *hdr_end, *hdr_next;
8136 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8137
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8138 /* Iterate through the headers.
8139 * we start with the start line.
8140 */
8141 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8142 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8143
8144 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
8145 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8146 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8147
8148 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8149 hdr_beg = hdr_next;
8150 hdr_end = hdr_beg + cur_hdr->len;
8151 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8152
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8153 /* We have one full header between hdr_beg and hdr_end, and the
8154 * next header starts at hdr_next. We're only interested in
8155 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8156 */
8157
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8158 is_cookie2 = 0;
8159 prev = hdr_beg + 10;
8160 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8161 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8162 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
8163 if (!val) {
8164 old_idx = cur_idx;
8165 continue;
8166 }
8167 is_cookie2 = 1;
8168 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8169 }
8170
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8171 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
8172 * <prev> points to the colon.
8173 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8174 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8175
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8176 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
8177 * check-cache is enabled) and we are not interested in checking
8178 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]8179 */
Willy Tarreau53a09d52015-08-10 18:59:40 +0200[diff] [blame]8180 if (s->be->cookie_name == NULL && sess->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8181 return;
8182
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8183 /* OK so now we know we have to process this response cookie.
8184 * The format of the Set-Cookie header is slightly different
8185 * from the format of the Cookie header in that it does not
8186 * support the comma as a cookie delimiter (thus the header
8187 * cannot be folded) because the Expires attribute described in
8188 * the original Netscape's spec may contain an unquoted date
8189 * with a comma inside. We have to live with this because
8190 * many browsers don't support Max-Age and some browsers don't
8191 * support quoted strings. However the Set-Cookie2 header is
8192 * clean.
8193 *
8194 * We have to keep multiple pointers in order to support cookie
8195 * removal at the beginning, middle or end of header without
8196 * corrupting the header (in case of set-cookie2). A special
8197 * pointer, <scav> points to the beginning of the set-cookie-av
8198 * fields after the first semi-colon. The <next> pointer points
8199 * either to the end of line (set-cookie) or next unquoted comma
8200 * (set-cookie2). All of these headers are valid :
8201 *
8202 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
8203 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8204 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8205 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
8206 * | | | | | | | | | |
8207 * | | | | | | | | +-> next hdr_end <--+
8208 * | | | | | | | +------------> scav
8209 * | | | | | | +--------------> val_end
8210 * | | | | | +--------------------> val_beg
8211 * | | | | +----------------------> equal
8212 * | | | +------------------------> att_end
8213 * | | +----------------------------> att_beg
8214 * | +------------------------------> prev
8215 * +-----------------------------------------> hdr_beg
8216 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8217
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8218 for (; prev < hdr_end; prev = next) {
8219 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8220
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8221 /* find att_beg */
8222 att_beg = prev + 1;
8223 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8224 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8225
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8226 /* find att_end : this is the first character after the last non
8227 * space before the equal. It may be equal to hdr_end.
8228 */
8229 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8230
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8231 while (equal < hdr_end) {
8232 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
8233 break;
8234 if (http_is_spht[(unsigned char)*equal++])
8235 continue;
8236 att_end = equal;
8237 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8238
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8239 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8240 * is between <att_beg> and <equal>, both may be identical.
8241 */
8242
8243 /* look for end of cookie if there is an equal sign */
8244 if (equal < hdr_end && *equal == '=') {
8245 /* look for the beginning of the value */
8246 val_beg = equal + 1;
8247 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8248 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8249
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8250 /* find the end of the value, respecting quotes */
8251 next = find_cookie_value_end(val_beg, hdr_end);
8252
8253 /* make val_end point to the first white space or delimitor after the value */
8254 val_end = next;
8255 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8256 val_end--;
8257 } else {
8258 /* <equal> points to next comma, semi-colon or EOL */
8259 val_beg = val_end = next = equal;
8260 }
8261
8262 if (next < hdr_end) {
8263 /* Set-Cookie2 supports multiple cookies, and <next> points to
8264 * a colon or semi-colon before the end. So skip all attr-value
8265 * pairs and look for the next comma. For Set-Cookie, since
8266 * commas are permitted in values, skip to the end.
8267 */
8268 if (is_cookie2)
8269 next = find_hdr_value_end(next, hdr_end);
8270 else
8271 next = hdr_end;
8272 }
8273
8274 /* Now everything is as on the diagram above */
8275
8276 /* Ignore cookies with no equal sign */
8277 if (equal == val_end)
8278 continue;
8279
8280 /* If there are spaces around the equal sign, we need to
8281 * strip them otherwise we'll get trouble for cookie captures,
8282 * or even for rewrites. Since this happens extremely rarely,
8283 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8284 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8285 if (unlikely(att_end != equal || val_beg > equal + 1)) {
8286 int stripped_before = 0;
8287 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8288
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8289 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8290 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8291 equal += stripped_before;
8292 val_beg += stripped_before;
8293 }
8294
8295 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8296 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8297 val_beg += stripped_after;
8298 stripped_before += stripped_after;
8299 }
8300
8301 val_end += stripped_before;
8302 next += stripped_before;
8303 hdr_end += stripped_before;
8304 hdr_next += stripped_before;
8305 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]8306 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8307 }
8308
8309 /* First, let's see if we want to capture this cookie. We check
8310 * that we don't already have a server side cookie, because we
8311 * can only capture one. Also as an optimisation, we ignore
8312 * cookies shorter than the declared name.
8313 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8314 if (sess->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]8315 txn->srv_cookie == NULL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8316 (val_end - att_beg >= sess->fe->capture_namelen) &&
8317 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8318 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]8319 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8320 Alert("HTTP logging : out of memory.\n");
8321 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8322 else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8323 if (log_len > sess->fe->capture_len)
8324 log_len = sess->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8325 memcpy(txn->srv_cookie, att_beg, log_len);
8326 txn->srv_cookie[log_len] = 0;
8327 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8328 }
8329
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8330 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8331 /* now check if we need to process it for persistence */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8332 if (!(s->flags & SF_IGNORE_PRST) &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8333 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
8334 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8335 /* assume passive cookie by default */
8336 txn->flags &= ~TX_SCK_MASK;
8337 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8338
8339 /* If the cookie is in insert mode on a known server, we'll delete
8340 * this occurrence because we'll insert another one later.
8341 * 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]8342 * a direct access.
8343 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8344 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]8345 /* The "preserve" flag was set, we don't want to touch the
8346 * server's cookie.
8347 */
8348 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8349 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8350 ((s->flags & SF_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8351 /* this cookie must be deleted */
8352 if (*prev == ':' && next == hdr_end) {
8353 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8354 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8355 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8356 txn->hdr_idx.used--;
8357 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8358 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8359 hdr_next += delta;
8360 http_msg_move_end(&txn->rsp, delta);
8361 /* note: while both invalid now, <next> and <hdr_end>
8362 * are still equal, so the for() will stop as expected.
8363 */
8364 } else {
8365 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8366 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8367 next = prev;
8368 hdr_end += delta;
8369 hdr_next += delta;
8370 cur_hdr->len += delta;
8371 http_msg_move_end(&txn->rsp, delta);
8372 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8373 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8374 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8375 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8376 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8377 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8378 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8379 * with this server since we know it.
8380 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8381 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8382 next += delta;
8383 hdr_end += delta;
8384 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8385 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8386 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8387
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8388 txn->flags &= ~TX_SCK_MASK;
8389 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8390 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8391 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8392 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8393 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8394 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8395 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8396 next += delta;
8397 hdr_end += delta;
8398 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8399 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8400 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8401
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8402 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8403 txn->flags &= ~TX_SCK_MASK;
8404 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8405 }
8406 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8407 /* that's done for this cookie, check the next one on the same
8408 * line when next != hdr_end (only if is_cookie2).
8409 */
8410 }
8411 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8412 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8413 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8414}
8415
8416
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8417/*
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8418 * Check if response is cacheable or not. Updates s->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8419 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8420void check_response_for_cacheability(struct stream *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8421{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8422 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8423 char *p1, *p2;
8424
8425 char *cur_ptr, *cur_end, *cur_next;
8426 int cur_idx;
8427
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]8428 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8429 return;
8430
8431 /* Iterate through the headers.
8432 * we start with the start line.
8433 */
8434 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8435 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8436
8437 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
8438 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8439 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8440
8441 cur_hdr = &txn->hdr_idx.v[cur_idx];
8442 cur_ptr = cur_next;
8443 cur_end = cur_ptr + cur_hdr->len;
8444 cur_next = cur_end + cur_hdr->cr + 1;
8445
8446 /* We have one full header between cur_ptr and cur_end, and the
8447 * next header starts at cur_next. We're only interested in
8448 * "Cookie:" headers.
8449 */
8450
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8451 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
8452 if (val) {
8453 if ((cur_end - (cur_ptr + val) >= 8) &&
8454 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
8455 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
8456 return;
8457 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8458 }
8459
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8460 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
8461 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8462 continue;
8463
8464 /* OK, right now we know we have a cache-control header at cur_ptr */
8465
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8466 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8467
8468 if (p1 >= cur_end) /* no more info */
8469 continue;
8470
8471 /* p1 is at the beginning of the value */
8472 p2 = p1;
8473
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]8474 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8475 p2++;
8476
8477 /* we have a complete value between p1 and p2 */
8478 if (p2 < cur_end && *p2 == '=') {
8479 /* we have something of the form no-cache="set-cookie" */
8480 if ((cur_end - p1 >= 21) &&
8481 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
8482 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8483 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8484 continue;
8485 }
8486
8487 /* OK, so we know that either p2 points to the end of string or to a comma */
8488 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8489 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8490 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8491 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8492 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8493 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8494 return;
8495 }
8496
8497 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8498 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8499 continue;
8500 }
8501 }
8502}
8503
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8504
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8505/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8506 * 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]8507 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8508 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8509 * 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]8510 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8511 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8512 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8513 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8514int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8515{
8516 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8517 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8518 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8519
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8520 if (!uri_auth)
8521 return 0;
8522
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8523 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]8524 return 0;
8525
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8526 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8527 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8528 return 0;
8529
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8530 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8531 return 0;
8532
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8533 return 1;
8534}
8535
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8536/*
8537 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8538 * By default it tries to report the error position as msg->err_pos. However if
8539 * this one is not set, it will then report msg->next, which is the last known
8540 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8541 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8542 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8543void http_capture_bad_message(struct error_snapshot *es, struct stream *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8544 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8545 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8546{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8547 struct session *sess = strm_sess(s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8548 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8549 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8550
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8551 es->len = MIN(chn->buf->i, sizeof(es->buf));
8552 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8553 len1 = MIN(len1, es->len);
8554 len2 = es->len - len1; /* remaining data if buffer wraps */
8555
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8556 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8557 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8558 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8559
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8560 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8561 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8562 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8563 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8564
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8565 es->when = date; // user-visible date
8566 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8567 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8568 es->oe = other_end;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8569 if (objt_conn(sess->origin))
8570 es->src = __objt_conn(sess->origin)->addr.from;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8571 else
8572 memset(&es->src, 0, sizeof(es->src));
8573
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8574 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8575 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8576 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8577 es->s_flags = s->flags;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8578 es->t_flags = s->txn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8579 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8580 es->b_out = chn->buf->o;
8581 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8582 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8583 es->m_clen = msg->chunk_len;
8584 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8585}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8586
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8587/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8588 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8589 * performed over the whole headers. Otherwise it must contain a valid header
8590 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8591 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8592 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8593 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8594 * -1. The value fetch stops at commas, so this function is suited for use with
8595 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8596 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8597 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8598unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8599 struct hdr_idx *idx, int occ,
8600 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8601{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8602 struct hdr_ctx local_ctx;
8603 char *ptr_hist[MAX_HDR_HISTORY];
8604 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8605 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8606 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8607
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8608 if (!ctx) {
8609 local_ctx.idx = 0;
8610 ctx = &local_ctx;
8611 }
8612
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8613 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8614 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8615 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8616 occ--;
8617 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8618 *vptr = ctx->line + ctx->val;
8619 *vlen = ctx->vlen;
8620 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8621 }
8622 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8623 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8624 }
8625
8626 /* negative occurrence, we scan all the list then walk back */
8627 if (-occ > MAX_HDR_HISTORY)
8628 return 0;
8629
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8630 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8631 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8632 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8633 len_hist[hist_ptr] = ctx->vlen;
8634 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8635 hist_ptr = 0;
8636 found++;
8637 }
8638 if (-occ > found)
8639 return 0;
8640 /* 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]8641 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8642 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8643 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8644 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8645 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8646 if (hist_ptr >= MAX_HDR_HISTORY)
8647 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8648 *vptr = ptr_hist[hist_ptr];
8649 *vlen = len_hist[hist_ptr];
8650 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8651}
8652
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8653/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8654 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8655 * performed over the whole headers. Otherwise it must contain a valid header
8656 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8657 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8658 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8659 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8660 * -1. This function differs from http_get_hdr() in that it only returns full
8661 * line header values and does not stop at commas.
8662 * The return value is 0 if nothing was found, or non-zero otherwise.
8663 */
8664unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8665 struct hdr_idx *idx, int occ,
8666 struct hdr_ctx *ctx, char **vptr, int *vlen)
8667{
8668 struct hdr_ctx local_ctx;
8669 char *ptr_hist[MAX_HDR_HISTORY];
8670 int len_hist[MAX_HDR_HISTORY];
8671 unsigned int hist_ptr;
8672 int found;
8673
8674 if (!ctx) {
8675 local_ctx.idx = 0;
8676 ctx = &local_ctx;
8677 }
8678
8679 if (occ >= 0) {
8680 /* search from the beginning */
8681 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8682 occ--;
8683 if (occ <= 0) {
8684 *vptr = ctx->line + ctx->val;
8685 *vlen = ctx->vlen;
8686 return 1;
8687 }
8688 }
8689 return 0;
8690 }
8691
8692 /* negative occurrence, we scan all the list then walk back */
8693 if (-occ > MAX_HDR_HISTORY)
8694 return 0;
8695
8696 found = hist_ptr = 0;
8697 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8698 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8699 len_hist[hist_ptr] = ctx->vlen;
8700 if (++hist_ptr >= MAX_HDR_HISTORY)
8701 hist_ptr = 0;
8702 found++;
8703 }
8704 if (-occ > found)
8705 return 0;
8706 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
8707 * find occurrence -occ, so we have to check [hist_ptr+occ].
8708 */
8709 hist_ptr += occ;
8710 if (hist_ptr >= MAX_HDR_HISTORY)
8711 hist_ptr -= MAX_HDR_HISTORY;
8712 *vptr = ptr_hist[hist_ptr];
8713 *vlen = len_hist[hist_ptr];
8714 return 1;
8715}
8716
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8717/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8718 * Print a debug line with a header. Always stop at the first CR or LF char,
8719 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8720 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8721 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8722void debug_hdr(const char *dir, struct stream *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8723{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8724 struct session *sess = strm_sess(s);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8725 int max;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8726
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8727 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8728 dir,
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8729 objt_conn(sess->origin) ? (unsigned short)objt_conn(sess->origin)->t.sock.fd : -1,
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]8730 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]8731
8732 for (max = 0; start + max < end; max++)
8733 if (start[max] == '\r' || start[max] == '\n')
8734 break;
8735
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8736 UBOUND(max, trash.size - trash.len - 3);
8737 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8738 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8739 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8740}
8741
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8742
8743/* Allocate a new HTTP transaction for stream <s> unless there is one already.
8744 * The hdr_idx is allocated as well. In case of allocation failure, everything
8745 * allocated is freed and NULL is returned. Otherwise the new transaction is
8746 * assigned to the stream and returned.
8747 */
8748struct http_txn *http_alloc_txn(struct stream *s)
8749{
8750 struct http_txn *txn = s->txn;
8751
8752 if (txn)
8753 return txn;
8754
8755 txn = pool_alloc2(pool2_http_txn);
8756 if (!txn)
8757 return txn;
8758
8759 txn->hdr_idx.size = global.tune.max_http_hdr;
8760 txn->hdr_idx.v = pool_alloc2(pool2_hdr_idx);
8761 if (!txn->hdr_idx.v) {
8762 pool_free2(pool2_http_txn, txn);
8763 return NULL;
8764 }
8765
8766 s->txn = txn;
8767 return txn;
8768}
8769
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8770/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8771 * Initialize a new HTTP transaction for stream <s>. It is assumed that all
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8772 * the required fields are properly allocated and that we only need to (re)init
8773 * them. This should be used before processing any new request.
8774 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8775void http_init_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8776{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8777 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8778 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8779
8780 txn->flags = 0;
8781 txn->status = -1;
8782
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8783 txn->cookie_first_date = 0;
8784 txn->cookie_last_date = 0;
8785
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8786 txn->srv_cookie = NULL;
8787 txn->cli_cookie = NULL;
8788 txn->uri = NULL;
8789
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8790 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8791 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8792 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8793 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8794 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8795 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]8796 txn->req.chunk_len = 0LL;
8797 txn->req.body_len = 0LL;
8798 txn->rsp.chunk_len = 0LL;
8799 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8800 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8801 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8802 txn->req.chn = &s->req;
8803 txn->rsp.chn = &s->res;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8804
8805 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8806
8807 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8808 if (fe->options2 & PR_O2_REQBUG_OK)
8809 txn->req.err_pos = -1; /* let buggy requests pass */
8810
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8811 if (txn->hdr_idx.v)
8812 hdr_idx_init(&txn->hdr_idx);
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]8813
8814 vars_init(&s->vars_txn, SCOPE_TXN);
8815 vars_init(&s->vars_reqres, SCOPE_REQ);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8816}
8817
8818/* to be used at the end of a transaction */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8819void http_end_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8820{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8821 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8822 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8823
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]8824 /* release any possible compression context */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8825 if (s->flags & SF_COMP_READY)
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]8826 s->comp_algo->end(&s->comp_ctx);
8827 s->comp_algo = NULL;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8828 s->flags &= ~SF_COMP_READY;
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]8829
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8830 /* these ones will have been dynamically allocated */
8831 pool_free2(pool2_requri, txn->uri);
8832 pool_free2(pool2_capture, txn->cli_cookie);
8833 pool_free2(pool2_capture, txn->srv_cookie);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8834 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8835
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8836 s->unique_id = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8837 txn->uri = NULL;
8838 txn->srv_cookie = NULL;
8839 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8840
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8841 if (s->req_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8842 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8843 for (h = fe->req_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8844 pool_free2(h->pool, s->req_cap[h->index]);
8845 memset(s->req_cap, 0, fe->nb_req_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8846 }
8847
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8848 if (s->res_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8849 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8850 for (h = fe->rsp_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]8851 pool_free2(h->pool, s->res_cap[h->index]);
8852 memset(s->res_cap, 0, fe->nb_rsp_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8853 }
8854
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]8855 vars_prune(&s->vars_txn, s);
8856 vars_prune(&s->vars_reqres, s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8857}
8858
8859/* to be used at the end of a transaction to prepare a new one */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8860void http_reset_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8861{
8862 http_end_txn(s);
8863 http_init_txn(s);
8864
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]8865 /* reinitialise the current rule list pointer to NULL. We are sure that
8866 * any rulelist match the NULL pointer.
8867 */
8868 s->current_rule_list = NULL;
8869
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8870 s->be = strm_fe(s);
8871 s->logs.logwait = strm_fe(s)->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8872 s->logs.level = 0;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8873 stream_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8874 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8875 /* re-init store persistence */
8876 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]8877 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8878
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8879 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8880
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8881 s->req.flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8882
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8883 /* We must trim any excess data from the response buffer, because we
8884 * may have blocked an invalid response from a server that we don't
8885 * want to accidentely forward once we disable the analysers, nor do
8886 * we want those data to come along with next response. A typical
8887 * example of such data would be from a buggy server responding to
8888 * a HEAD with some data, or sending more than the advertised
8889 * content-length.
8890 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8891 if (unlikely(s->res.buf->i))
8892 s->res.buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8893
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8894 s->req.rto = strm_fe(s)->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8895 s->req.wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8896
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8897 s->res.rto = TICK_ETERNITY;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8898 s->res.wto = strm_fe(s)->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8899
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8900 s->req.rex = TICK_ETERNITY;
8901 s->req.wex = TICK_ETERNITY;
8902 s->req.analyse_exp = TICK_ETERNITY;
8903 s->res.rex = TICK_ETERNITY;
8904 s->res.wex = TICK_ETERNITY;
8905 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8906}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8907
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8908void free_http_res_rules(struct list *r)
8909{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8910 struct act_rule *tr, *pr;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8911
8912 list_for_each_entry_safe(pr, tr, r, list) {
8913 LIST_DEL(&pr->list);
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8914 regex_free(&pr->arg.hdr_add.re);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8915 free(pr);
8916 }
8917}
8918
8919void free_http_req_rules(struct list *r)
8920{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8921 struct act_rule *tr, *pr;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8922
8923 list_for_each_entry_safe(pr, tr, r, list) {
8924 LIST_DEL(&pr->list);
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8925 if (pr->action == ACT_HTTP_REQ_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8926 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8927
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8928 regex_free(&pr->arg.hdr_add.re);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8929 free(pr);
8930 }
8931}
8932
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8933/* parse an "http-request" rule */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8934struct act_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8935{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8936 struct act_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]8937 struct http_req_action_kw *custom = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8938 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8939 char *error;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8940
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]8941 rule = (struct act_rule*)calloc(1, sizeof(struct act_rule));
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8942 if (!rule) {
8943 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8944 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8945 }
8946
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]8947 rule->deny_status = HTTP_ERR_403;
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8948 if (!strcmp(args[0], "allow")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8949 rule->action = ACT_ACTION_ALLOW;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8950 cur_arg = 1;
Willy Tarreau5bd67592014-04-28 22:00:46 +0200[diff] [blame]8951 } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block")) {
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]8952 int code;
8953 int hc;
8954
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8955 rule->action = ACT_ACTION_DENY;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8956 cur_arg = 1;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]8957 if (strcmp(args[cur_arg], "deny_status") == 0) {
8958 cur_arg++;
8959 if (!args[cur_arg]) {
8960 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing status code.\n",
8961 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
8962 goto out_err;
8963 }
8964
8965 code = atol(args[cur_arg]);
8966 cur_arg++;
8967 for (hc = 0; hc < HTTP_ERR_SIZE; hc++) {
8968 if (http_err_codes[hc] == code) {
8969 rule->deny_status = hc;
8970 break;
8971 }
8972 }
8973
8974 if (hc >= HTTP_ERR_SIZE) {
8975 Warning("parsing [%s:%d] : status code %d not handled, using default code 403.\n",
8976 file, linenum, code);
8977 }
8978 }
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8979 } else if (!strcmp(args[0], "tarpit")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8980 rule->action = ACT_HTTP_REQ_TARPIT;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8981 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8982 } else if (!strcmp(args[0], "auth")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8983 rule->action = ACT_HTTP_REQ_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8984 cur_arg = 1;
8985
8986 while(*args[cur_arg]) {
8987 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8988 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8989 cur_arg+=2;
8990 continue;
8991 } else
8992 break;
8993 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8994 } else if (!strcmp(args[0], "set-nice")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]8995 rule->action = ACT_HTTP_SET_NICE;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8996 cur_arg = 1;
8997
8998 if (!*args[cur_arg] ||
8999 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9000 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
9001 file, linenum, args[0]);
9002 goto out_err;
9003 }
9004 rule->arg.nice = atoi(args[cur_arg]);
9005 if (rule->arg.nice < -1024)
9006 rule->arg.nice = -1024;
9007 else if (rule->arg.nice > 1024)
9008 rule->arg.nice = 1024;
9009 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9010 } else if (!strcmp(args[0], "set-tos")) {
9011#ifdef IP_TOS
9012 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9013 rule->action = ACT_HTTP_SET_TOS;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9014 cur_arg = 1;
9015
9016 if (!*args[cur_arg] ||
9017 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9018 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
9019 file, linenum, args[0]);
9020 goto out_err;
9021 }
9022
9023 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9024 if (err && *err != '\0') {
9025 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
9026 file, linenum, err, args[0]);
9027 goto out_err;
9028 }
9029 cur_arg++;
9030#else
9031 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9032 goto out_err;
9033#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9034 } else if (!strcmp(args[0], "set-mark")) {
9035#ifdef SO_MARK
9036 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9037 rule->action = ACT_HTTP_SET_MARK;
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9038 cur_arg = 1;
9039
9040 if (!*args[cur_arg] ||
9041 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9042 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
9043 file, linenum, args[0]);
9044 goto out_err;
9045 }
9046
9047 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9048 if (err && *err != '\0') {
9049 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
9050 file, linenum, err, args[0]);
9051 goto out_err;
9052 }
9053 cur_arg++;
9054 global.last_checks |= LSTCHK_NETADM;
9055#else
9056 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9057 goto out_err;
9058#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9059 } else if (!strcmp(args[0], "set-log-level")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9060 rule->action = ACT_HTTP_SET_LOGL;
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9061 cur_arg = 1;
9062
9063 if (!*args[cur_arg] ||
9064 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9065 bad_log_level:
9066 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
9067 file, linenum, args[0]);
9068 goto out_err;
9069 }
9070 if (strcmp(args[cur_arg], "silent") == 0)
9071 rule->arg.loglevel = -1;
9072 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
9073 goto bad_log_level;
9074 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9075 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9076 rule->action = *args[0] == 'a' ? ACT_HTTP_ADD_HDR : ACT_HTTP_SET_HDR;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9077 cur_arg = 1;
9078
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]9079 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9080 (*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]9081 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9082 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9083 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9084 }
9085
9086 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9087 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9088 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]9089
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9090 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9091 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]9092 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9093 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9094 free(proxy->conf.lfs_file);
9095 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9096 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9097 cur_arg += 2;
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9098 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9099 rule->action = args[0][8] == 'h' ? ACT_HTTP_REPLACE_HDR : ACT_HTTP_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9100 cur_arg = 1;
9101
9102 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann92df3702014-06-24 11:10:00 +0200[diff] [blame]9103 (*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]9104 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
9105 file, linenum, args[0]);
9106 goto out_err;
9107 }
9108
9109 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9110 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9111 LIST_INIT(&rule->arg.hdr_add.fmt);
9112
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9113 error = NULL;
9114 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9115 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9116 args[cur_arg + 1], error);
9117 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9118 goto out_err;
9119 }
9120
9121 proxy->conf.args.ctx = ARGC_HRQ;
9122 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9123 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9124 file, linenum);
9125
9126 free(proxy->conf.lfs_file);
9127 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9128 proxy->conf.lfs_line = proxy->conf.args.line;
9129 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9130 } else if (strcmp(args[0], "del-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9131 rule->action = ACT_HTTP_DEL_HDR;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9132 cur_arg = 1;
9133
9134 if (!*args[cur_arg] ||
9135 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9136 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9137 file, linenum, args[0]);
9138 goto out_err;
9139 }
9140
9141 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9142 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9143
9144 proxy->conf.args.ctx = ARGC_HRQ;
9145 free(proxy->conf.lfs_file);
9146 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9147 proxy->conf.lfs_line = proxy->conf.args.line;
9148 cur_arg += 1;
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9149 } else if (strncmp(args[0], "track-sc", 8) == 0 &&
9150 args[0][9] == '\0' && args[0][8] >= '0' &&
Willy Tarreaue1cfc1f2014-10-17 11:53:05 +0200[diff] [blame]9151 args[0][8] < '0' + MAX_SESS_STKCTR) { /* track-sc 0..9 */
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9152 struct sample_expr *expr;
9153 unsigned int where;
9154 char *err = NULL;
9155
9156 cur_arg = 1;
9157 proxy->conf.args.ctx = ARGC_TRK;
9158
9159 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9160 if (!expr) {
9161 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9162 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9163 free(err);
9164 goto out_err;
9165 }
9166
9167 where = 0;
9168 if (proxy->cap & PR_CAP_FE)
9169 where |= SMP_VAL_FE_HRQ_HDR;
9170 if (proxy->cap & PR_CAP_BE)
9171 where |= SMP_VAL_BE_HRQ_HDR;
9172
9173 if (!(expr->fetch->val & where)) {
9174 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule :"
9175 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9176 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9177 args[cur_arg-1], sample_src_names(expr->fetch->use));
9178 free(expr);
9179 goto out_err;
9180 }
9181
9182 if (strcmp(args[cur_arg], "table") == 0) {
9183 cur_arg++;
9184 if (!args[cur_arg]) {
9185 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing table name.\n",
9186 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9187 free(expr);
9188 goto out_err;
9189 }
9190 /* we copy the table name for now, it will be resolved later */
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]9191 rule->arg.trk_ctr.table.n = strdup(args[cur_arg]);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9192 cur_arg++;
9193 }
Thierry FOURNIER5ec63e02015-08-04 09:09:48 +0200[diff] [blame]9194 rule->arg.trk_ctr.expr = expr;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9195 rule->action = ACT_ACTION_TRK_SC0 + args[0][8] - '0';
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9196 } else if (strcmp(args[0], "redirect") == 0) {
9197 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]9198 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9199
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9200 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]9201 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9202 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9203 goto out_err;
9204 }
9205
9206 /* this redirect rule might already contain a parsed condition which
9207 * we'll pass to the http-request rule.
9208 */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9209 rule->action = ACT_HTTP_REDIR;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9210 rule->arg.redir = redir;
9211 rule->cond = redir->cond;
9212 redir->cond = NULL;
9213 cur_arg = 2;
9214 return rule;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9215 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9216 /* http-request add-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9217 rule->action = ACT_HTTP_ADD_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9218 /*
9219 * '+ 8' for 'add-acl('
9220 * '- 9' for 'add-acl(' + trailing ')'
9221 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9222 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9223
9224 cur_arg = 1;
9225
9226 if (!*args[cur_arg] ||
9227 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9228 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9229 file, linenum, args[0]);
9230 goto out_err;
9231 }
9232
9233 LIST_INIT(&rule->arg.map.key);
9234 proxy->conf.args.ctx = ARGC_HRQ;
9235 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9236 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9237 file, linenum);
9238 free(proxy->conf.lfs_file);
9239 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9240 proxy->conf.lfs_line = proxy->conf.args.line;
9241 cur_arg += 1;
9242 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9243 /* http-request del-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9244 rule->action = ACT_HTTP_DEL_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9245 /*
9246 * '+ 8' for 'del-acl('
9247 * '- 9' for 'del-acl(' + trailing ')'
9248 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9249 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9250
9251 cur_arg = 1;
9252
9253 if (!*args[cur_arg] ||
9254 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9255 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9256 file, linenum, args[0]);
9257 goto out_err;
9258 }
9259
9260 LIST_INIT(&rule->arg.map.key);
9261 proxy->conf.args.ctx = ARGC_HRQ;
9262 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9263 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9264 file, linenum);
9265 free(proxy->conf.lfs_file);
9266 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9267 proxy->conf.lfs_line = proxy->conf.args.line;
9268 cur_arg += 1;
9269 } else if (strncmp(args[0], "del-map", 7) == 0) {
9270 /* http-request del-map(<reference (map name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9271 rule->action = ACT_HTTP_DEL_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9272 /*
9273 * '+ 8' for 'del-map('
9274 * '- 9' for 'del-map(' + trailing ')'
9275 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9276 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9277
9278 cur_arg = 1;
9279
9280 if (!*args[cur_arg] ||
9281 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9282 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9283 file, linenum, args[0]);
9284 goto out_err;
9285 }
9286
9287 LIST_INIT(&rule->arg.map.key);
9288 proxy->conf.args.ctx = ARGC_HRQ;
9289 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9290 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9291 file, linenum);
9292 free(proxy->conf.lfs_file);
9293 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9294 proxy->conf.lfs_line = proxy->conf.args.line;
9295 cur_arg += 1;
9296 } else if (strncmp(args[0], "set-map", 7) == 0) {
9297 /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9298 rule->action = ACT_HTTP_SET_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9299 /*
9300 * '+ 8' for 'set-map('
9301 * '- 9' for 'set-map(' + trailing ')'
9302 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9303 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9304
9305 cur_arg = 1;
9306
9307 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9308 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9309 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9310 file, linenum, args[0]);
9311 goto out_err;
9312 }
9313
9314 LIST_INIT(&rule->arg.map.key);
9315 LIST_INIT(&rule->arg.map.value);
9316 proxy->conf.args.ctx = ARGC_HRQ;
9317
9318 /* key pattern */
9319 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9320 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9321 file, linenum);
9322
9323 /* value pattern */
9324 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9325 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9326 file, linenum);
9327 free(proxy->conf.lfs_file);
9328 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9329 proxy->conf.lfs_line = proxy->conf.args.line;
9330
9331 cur_arg += 2;
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]9332 } else if (strncmp(args[0], "set-src", 7) == 0) {
9333 struct sample_expr *expr;
9334 unsigned int where;
9335 char *err = NULL;
9336
9337 cur_arg = 1;
9338 proxy->conf.args.ctx = ARGC_HRQ;
9339
9340 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9341 if (!expr) {
9342 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9343 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9344 free(err);
9345 goto out_err;
9346 }
9347
9348 where = 0;
9349 if (proxy->cap & PR_CAP_FE)
9350 where |= SMP_VAL_FE_HRQ_HDR;
9351 if (proxy->cap & PR_CAP_BE)
9352 where |= SMP_VAL_BE_HRQ_HDR;
9353
9354 if (!(expr->fetch->val & where)) {
9355 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule :"
9356 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9357 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9358 args[cur_arg-1], sample_src_names(expr->fetch->use));
9359 free(expr);
9360 goto out_err;
9361 }
9362
Thierry FOURNIERa002dc92015-07-31 08:50:51 +0200[diff] [blame]9363 rule->arg.expr = expr;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9364 rule->action = ACT_HTTP_REQ_SET_SRC;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9365 } else if (((custom = action_http_req_custom(args[0])) != NULL)) {
9366 char *errmsg = NULL;
9367 cur_arg = 1;
9368 /* try in the module list */
Thierry FOURNIER5563e4b2015-08-14 19:20:07 +0200[diff] [blame]9369 rule->from = ACT_F_HTTP_REQ;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9370 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9371 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9372 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9373 free(errmsg);
9374 goto out_err;
9375 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9376 } else {
Adis Nezirovic2fbcafc2015-07-06 15:44:30 +0200[diff] [blame]9377 Alert("parsing [%s:%d]: 'http-request' expects 'allow', 'deny', 'auth', 'redirect', 'tarpit', 'add-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', 'set-tos', 'set-mark', 'set-log-level', 'add-acl', 'del-acl', 'del-map', 'set-map', 'set-var', 'set-src', but got '%s'%s.\n",
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9378 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9379 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9380 }
9381
9382 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9383 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9384 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9385
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9386 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9387 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
9388 file, linenum, args[0], errmsg);
9389 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9390 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9391 }
9392 rule->cond = cond;
9393 }
9394 else if (*args[cur_arg]) {
9395 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
9396 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9397 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9398 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9399 }
9400
9401 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9402 out_err:
9403 free(rule);
9404 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9405}
9406
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9407/* parse an "http-respose" rule */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9408struct act_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9409{
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]9410 struct act_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9411 struct http_res_action_kw *custom = NULL;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9412 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9413 char *error;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9414
9415 rule = calloc(1, sizeof(*rule));
9416 if (!rule) {
9417 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
9418 goto out_err;
9419 }
9420
9421 if (!strcmp(args[0], "allow")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9422 rule->action = ACT_ACTION_ALLOW;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9423 cur_arg = 1;
9424 } else if (!strcmp(args[0], "deny")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9425 rule->action = ACT_ACTION_DENY;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9426 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9427 } else if (!strcmp(args[0], "set-nice")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9428 rule->action = ACT_HTTP_SET_NICE;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9429 cur_arg = 1;
9430
9431 if (!*args[cur_arg] ||
9432 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9433 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
9434 file, linenum, args[0]);
9435 goto out_err;
9436 }
9437 rule->arg.nice = atoi(args[cur_arg]);
9438 if (rule->arg.nice < -1024)
9439 rule->arg.nice = -1024;
9440 else if (rule->arg.nice > 1024)
9441 rule->arg.nice = 1024;
9442 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9443 } else if (!strcmp(args[0], "set-tos")) {
9444#ifdef IP_TOS
9445 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9446 rule->action = ACT_HTTP_SET_TOS;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9447 cur_arg = 1;
9448
9449 if (!*args[cur_arg] ||
9450 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9451 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9452 file, linenum, args[0]);
9453 goto out_err;
9454 }
9455
9456 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9457 if (err && *err != '\0') {
9458 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9459 file, linenum, err, args[0]);
9460 goto out_err;
9461 }
9462 cur_arg++;
9463#else
9464 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9465 goto out_err;
9466#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9467 } else if (!strcmp(args[0], "set-mark")) {
9468#ifdef SO_MARK
9469 char *err;
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9470 rule->action = ACT_HTTP_SET_MARK;
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9471 cur_arg = 1;
9472
9473 if (!*args[cur_arg] ||
9474 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9475 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9476 file, linenum, args[0]);
9477 goto out_err;
9478 }
9479
9480 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9481 if (err && *err != '\0') {
9482 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9483 file, linenum, err, args[0]);
9484 goto out_err;
9485 }
9486 cur_arg++;
9487 global.last_checks |= LSTCHK_NETADM;
9488#else
9489 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9490 goto out_err;
9491#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9492 } else if (!strcmp(args[0], "set-log-level")) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9493 rule->action = ACT_HTTP_SET_LOGL;
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9494 cur_arg = 1;
9495
9496 if (!*args[cur_arg] ||
9497 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9498 bad_log_level:
9499 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
9500 file, linenum, args[0]);
9501 goto out_err;
9502 }
9503 if (strcmp(args[cur_arg], "silent") == 0)
9504 rule->arg.loglevel = -1;
9505 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
9506 goto bad_log_level;
9507 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9508 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9509 rule->action = *args[0] == 'a' ? ACT_HTTP_ADD_HDR : ACT_HTTP_SET_HDR;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9510 cur_arg = 1;
9511
9512 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9513 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9514 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9515 file, linenum, args[0]);
9516 goto out_err;
9517 }
9518
9519 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9520 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9521 LIST_INIT(&rule->arg.hdr_add.fmt);
9522
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9523 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9524 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]9525 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9526 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9527 free(proxy->conf.lfs_file);
9528 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9529 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9530 cur_arg += 2;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9531 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9532 rule->action = args[0][8] == 'h' ? ACT_HTTP_REPLACE_HDR : ACT_HTTP_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9533 cur_arg = 1;
9534
9535 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann12cb00b2014-08-08 17:29:06 +0200[diff] [blame]9536 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
9537 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 3 arguments.\n",
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9538 file, linenum, args[0]);
9539 goto out_err;
9540 }
9541
9542 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9543 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9544 LIST_INIT(&rule->arg.hdr_add.fmt);
9545
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9546 error = NULL;
9547 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9548 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9549 args[cur_arg + 1], error);
9550 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9551 goto out_err;
9552 }
9553
9554 proxy->conf.args.ctx = ARGC_HRQ;
9555 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9556 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9557 file, linenum);
9558
9559 free(proxy->conf.lfs_file);
9560 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9561 proxy->conf.lfs_line = proxy->conf.args.line;
9562 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9563 } else if (strcmp(args[0], "del-header") == 0) {
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9564 rule->action = ACT_HTTP_DEL_HDR;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9565 cur_arg = 1;
9566
9567 if (!*args[cur_arg] ||
9568 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9569 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9570 file, linenum, args[0]);
9571 goto out_err;
9572 }
9573
9574 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9575 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9576
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9577 proxy->conf.args.ctx = ARGC_HRS;
9578 free(proxy->conf.lfs_file);
9579 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9580 proxy->conf.lfs_line = proxy->conf.args.line;
9581 cur_arg += 1;
9582 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9583 /* http-request add-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9584 rule->action = ACT_HTTP_ADD_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9585 /*
9586 * '+ 8' for 'add-acl('
9587 * '- 9' for 'add-acl(' + trailing ')'
9588 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9589 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9590
9591 cur_arg = 1;
9592
9593 if (!*args[cur_arg] ||
9594 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9595 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9596 file, linenum, args[0]);
9597 goto out_err;
9598 }
9599
9600 LIST_INIT(&rule->arg.map.key);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9601 proxy->conf.args.ctx = ARGC_HRS;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9602 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9603 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9604 file, linenum);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9605 free(proxy->conf.lfs_file);
9606 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9607 proxy->conf.lfs_line = proxy->conf.args.line;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9608
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9609 cur_arg += 1;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9610 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9611 /* http-response del-acl(<reference (acl name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9612 rule->action = ACT_HTTP_DEL_ACL;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9613 /*
9614 * '+ 8' for 'del-acl('
9615 * '- 9' for 'del-acl(' + trailing ')'
9616 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9617 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9618
9619 cur_arg = 1;
9620
9621 if (!*args[cur_arg] ||
9622 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9623 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9624 file, linenum, args[0]);
9625 goto out_err;
9626 }
9627
9628 LIST_INIT(&rule->arg.map.key);
9629 proxy->conf.args.ctx = ARGC_HRS;
9630 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9631 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9632 file, linenum);
9633 free(proxy->conf.lfs_file);
9634 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9635 proxy->conf.lfs_line = proxy->conf.args.line;
9636 cur_arg += 1;
9637 } else if (strncmp(args[0], "del-map", 7) == 0) {
9638 /* http-response del-map(<reference (map name)>) <key pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9639 rule->action = ACT_HTTP_DEL_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9640 /*
9641 * '+ 8' for 'del-map('
9642 * '- 9' for 'del-map(' + trailing ')'
9643 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9644 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9645
9646 cur_arg = 1;
9647
9648 if (!*args[cur_arg] ||
9649 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9650 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9651 file, linenum, args[0]);
9652 goto out_err;
9653 }
9654
9655 LIST_INIT(&rule->arg.map.key);
9656 proxy->conf.args.ctx = ARGC_HRS;
9657 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9658 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9659 file, linenum);
9660 free(proxy->conf.lfs_file);
9661 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9662 proxy->conf.lfs_line = proxy->conf.args.line;
9663 cur_arg += 1;
9664 } else if (strncmp(args[0], "set-map", 7) == 0) {
9665 /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9666 rule->action = ACT_HTTP_SET_MAP;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9667 /*
9668 * '+ 8' for 'set-map('
9669 * '- 9' for 'set-map(' + trailing ')'
9670 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9671 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9672
9673 cur_arg = 1;
9674
9675 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9676 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9677 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9678 file, linenum, args[0]);
9679 goto out_err;
9680 }
9681
9682 LIST_INIT(&rule->arg.map.key);
9683 LIST_INIT(&rule->arg.map.value);
9684
9685 proxy->conf.args.ctx = ARGC_HRS;
9686
9687 /* key pattern */
9688 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9689 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9690 file, linenum);
9691
9692 /* value pattern */
9693 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9694 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9695 file, linenum);
9696
9697 free(proxy->conf.lfs_file);
9698 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9699 proxy->conf.lfs_line = proxy->conf.args.line;
9700
9701 cur_arg += 2;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]9702 } else if (strcmp(args[0], "redirect") == 0) {
9703 struct redirect_rule *redir;
9704 char *errmsg = NULL;
9705
9706 if ((redir = http_parse_redirect_rule(file, linenum, proxy, (const char **)args + 1, &errmsg, 1, 1)) == NULL) {
9707 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9708 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9709 goto out_err;
9710 }
9711
9712 /* this redirect rule might already contain a parsed condition which
9713 * we'll pass to the http-request rule.
9714 */
Thierry FOURNIER0ea5c7f2015-08-05 19:05:19 +0200[diff] [blame]9715 rule->action = ACT_HTTP_REDIR;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame]9716 rule->arg.redir = redir;
9717 rule->cond = redir->cond;
9718 redir->cond = NULL;
9719 cur_arg = 2;
9720 return rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9721 } else if (((custom = action_http_res_custom(args[0])) != NULL)) {
9722 char *errmsg = NULL;
9723 cur_arg = 1;
9724 /* try in the module list */
Thierry FOURNIER5563e4b2015-08-14 19:20:07 +0200[diff] [blame]9725 rule->from = ACT_F_HTTP_RES;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9726 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9727 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9728 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9729 free(errmsg);
9730 goto out_err;
9731 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9732 } else {
Thierry FOURNIER4834bc72015-06-06 19:29:07 +0200[diff] [blame]9733 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]9734 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
9735 goto out_err;
9736 }
9737
9738 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9739 struct acl_cond *cond;
9740 char *errmsg = NULL;
9741
9742 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9743 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
9744 file, linenum, args[0], errmsg);
9745 free(errmsg);
9746 goto out_err;
9747 }
9748 rule->cond = cond;
9749 }
9750 else if (*args[cur_arg]) {
9751 Alert("parsing [%s:%d]: 'http-response %s' expects"
9752 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9753 file, linenum, args[0], args[cur_arg]);
9754 goto out_err;
9755 }
9756
9757 return rule;
9758 out_err:
9759 free(rule);
9760 return NULL;
9761}
9762
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9763/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9764 * 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]9765 * dynamic log-format rule instead of a static string. Parameter <dir> indicates
9766 * the direction of the rule, and equals 0 for request, non-zero for responses.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9767 */
9768struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9769 const char **args, char **errmsg, int use_fmt, int dir)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9770{
9771 struct redirect_rule *rule;
9772 int cur_arg;
9773 int type = REDIRECT_TYPE_NONE;
9774 int code = 302;
9775 const char *destination = NULL;
9776 const char *cookie = NULL;
9777 int cookie_set = 0;
9778 unsigned int flags = REDIRECT_FLAG_NONE;
9779 struct acl_cond *cond = NULL;
9780
9781 cur_arg = 0;
9782 while (*(args[cur_arg])) {
9783 if (strcmp(args[cur_arg], "location") == 0) {
9784 if (!*args[cur_arg + 1])
9785 goto missing_arg;
9786
9787 type = REDIRECT_TYPE_LOCATION;
9788 cur_arg++;
9789 destination = args[cur_arg];
9790 }
9791 else if (strcmp(args[cur_arg], "prefix") == 0) {
9792 if (!*args[cur_arg + 1])
9793 goto missing_arg;
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9794 type = REDIRECT_TYPE_PREFIX;
9795 cur_arg++;
9796 destination = args[cur_arg];
9797 }
9798 else if (strcmp(args[cur_arg], "scheme") == 0) {
9799 if (!*args[cur_arg + 1])
9800 goto missing_arg;
9801
9802 type = REDIRECT_TYPE_SCHEME;
9803 cur_arg++;
9804 destination = args[cur_arg];
9805 }
9806 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
9807 if (!*args[cur_arg + 1])
9808 goto missing_arg;
9809
9810 cur_arg++;
9811 cookie = args[cur_arg];
9812 cookie_set = 1;
9813 }
9814 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
9815 if (!*args[cur_arg + 1])
9816 goto missing_arg;
9817
9818 cur_arg++;
9819 cookie = args[cur_arg];
9820 cookie_set = 0;
9821 }
9822 else if (strcmp(args[cur_arg], "code") == 0) {
9823 if (!*args[cur_arg + 1])
9824 goto missing_arg;
9825
9826 cur_arg++;
9827 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9828 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9829 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9830 "'%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]9831 args[cur_arg - 1], args[cur_arg]);
9832 return NULL;
9833 }
9834 }
9835 else if (!strcmp(args[cur_arg],"drop-query")) {
9836 flags |= REDIRECT_FLAG_DROP_QS;
9837 }
9838 else if (!strcmp(args[cur_arg],"append-slash")) {
9839 flags |= REDIRECT_FLAG_APPEND_SLASH;
9840 }
9841 else if (strcmp(args[cur_arg], "if") == 0 ||
9842 strcmp(args[cur_arg], "unless") == 0) {
9843 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
9844 if (!cond) {
9845 memprintf(errmsg, "error in condition: %s", *errmsg);
9846 return NULL;
9847 }
9848 break;
9849 }
9850 else {
9851 memprintf(errmsg,
9852 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
9853 args[cur_arg]);
9854 return NULL;
9855 }
9856 cur_arg++;
9857 }
9858
9859 if (type == REDIRECT_TYPE_NONE) {
9860 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
9861 return NULL;
9862 }
9863
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9864 if (dir && type != REDIRECT_TYPE_LOCATION) {
9865 memprintf(errmsg, "response only supports redirect type 'location'");
9866 return NULL;
9867 }
9868
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9869 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
9870 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]9871 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9872
9873 if (!use_fmt) {
9874 /* old-style static redirect rule */
9875 rule->rdr_str = strdup(destination);
9876 rule->rdr_len = strlen(destination);
9877 }
9878 else {
9879 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9880
9881 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
9882 * if prefix == "/", we don't want to add anything, otherwise it
9883 * makes it hard for the user to configure a self-redirection.
9884 */
Godbachd9722032014-12-18 15:44:58 +0800[diff] [blame]9885 curproxy->conf.args.ctx = ARGC_RDR;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9886 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9887 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9888 dir ? (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRS_HDR : SMP_VAL_BE_HRS_HDR
9889 : (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]9890 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9891 free(curproxy->conf.lfs_file);
9892 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
9893 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9894 }
9895 }
9896
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9897 if (cookie) {
9898 /* depending on cookie_set, either we want to set the cookie, or to clear it.
9899 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
9900 */
9901 rule->cookie_len = strlen(cookie);
9902 if (cookie_set) {
9903 rule->cookie_str = malloc(rule->cookie_len + 10);
9904 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9905 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
9906 rule->cookie_len += 9;
9907 } else {
9908 rule->cookie_str = malloc(rule->cookie_len + 21);
9909 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9910 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
9911 rule->cookie_len += 20;
9912 }
9913 }
9914 rule->type = type;
9915 rule->code = code;
9916 rule->flags = flags;
9917 LIST_INIT(&rule->list);
9918 return rule;
9919
9920 missing_arg:
9921 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
9922 return NULL;
9923}
9924
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9925/************************************************************************/
9926/* The code below is dedicated to ACL parsing and matching */
9927/************************************************************************/
9928
9929
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9930/* This function ensures that the prerequisites for an L7 fetch are ready,
9931 * which means that a request or response is ready. If some data is missing,
9932 * 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]9933 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
9934 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9935 *
9936 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9937 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
9938 * decide whether or not an HTTP message is present ;
9939 * 0 if the requested data cannot be fetched or if it is certain that
9940 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9941 * 1 if an HTTP message is ready
9942 */
9943static int
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]9944smp_prefetch_http(struct proxy *px, struct stream *s, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9945 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9946{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9947 struct http_txn *txn;
9948 struct http_msg *msg;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9949
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]9950 /* Note: this function may only be used from places where
9951 * http_init_txn() has already been done, and implies that <s>,
9952 * <txn>, and <hdr_idx.v> are properly set. An extra check protects
9953 * against an eventual mistake in the fetch capability matrix.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9954 */
9955
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9956 if (!s)
9957 return 0;
9958 txn = s->txn;
9959
9960 if (!txn)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9961 return 0;
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]9962 msg = &txn->req;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9963
9964 /* Check for a dependency on a request */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]9965 smp->data.type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9966
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9967 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9968 /* If the buffer does not leave enough free space at the end,
9969 * we must first realign it.
9970 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9971 if (s->req.buf->p > s->req.buf->data &&
9972 s->req.buf->i + s->req.buf->p > s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)
9973 buffer_slow_realign(s->req.buf);
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9974
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9975 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]9976 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9977 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9978
9979 /* Try to decode HTTP request */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9980 if (likely(msg->next < s->req.buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9981 http_msg_analyzer(msg, &txn->hdr_idx);
9982
9983 /* Still no valid request ? */
9984 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]9985 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9986 buffer_full(s->req.buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9987 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9988 }
9989 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9990 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9991 return 0;
9992 }
9993
9994 /* OK we just got a valid HTTP request. We have some minor
9995 * preparation to perform so that further checks can rely
9996 * on HTTP tests.
9997 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9998
9999 /* If the request was parsed but was too large, we must absolutely
10000 * return an error so that it is not processed. At the moment this
10001 * cannot happen, but if the parsers are to change in the future,
10002 * we want this check to be maintained.
10003 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10004 if (unlikely(s->req.buf->i + s->req.buf->p >
10005 s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10006 msg->msg_state = HTTP_MSG_ERROR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10007 smp->data.u.sint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10008 return 1;
10009 }
10010
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10011 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10012 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]10013 s->flags |= SF_REDIRECTABLE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10014
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10015 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
10016 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10017 }
10018
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10019 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10020 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10021 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10022
10023 /* otherwise everything's ready for the request */
10024 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10025 else {
10026 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10027 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
10028 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10029 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10030 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10031 }
10032
10033 /* everything's OK */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10034 smp->data.u.sint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10035 return 1;
10036}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10037
Willy Tarreau6c616e02014-06-25 16:56:41 +0200[diff] [blame]10038/* Note: these functinos *do* modify the sample. Even in case of success, at
10039 * least the type and uint value are modified.
10040 */
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10041#define CHECK_HTTP_MESSAGE_FIRST() \
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10042 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]10043
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10044#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10045 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]10046
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10047
10048/* 1. Check on METHOD
10049 * We use the pre-parsed method if it is known, and store its number as an
10050 * integer. If it is unknown, we use the pointer and the length.
10051 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]10052static int pat_parse_meth(const char *text, struct pattern *pattern, int mflags, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10053{
10054 int len, meth;
10055
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]10056 len = strlen(text);
10057 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10058
10059 pattern->val.i = meth;
10060 if (meth == HTTP_METH_OTHER) {
Willy Tarreau912c1192014-08-29 15:15:50 +0200[diff] [blame]10061 pattern->ptr.str = (char *)text;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10062 pattern->len = len;
10063 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10064 else {
10065 pattern->ptr.str = NULL;
10066 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10067 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10068 return 1;
10069}
10070
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10071/* This function fetches the method of current HTTP request and stores
10072 * it in the global pattern struct as a chunk. There are two possibilities :
10073 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
10074 * in <len> and <ptr> is NULL ;
10075 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
10076 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10077 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10078 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10079static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10080smp_fetch_meth(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10081{
10082 int meth;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10083 struct http_txn *txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10084
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10085 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10086
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10087 meth = txn->meth;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10088 smp->data.type = SMP_T_METH;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10089 smp->data.u.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10090 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10091 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
10092 /* ensure the indexes are not affected */
10093 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10094 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10095 smp->data.u.meth.str.len = txn->req.sl.rq.m_l;
10096 smp->data.u.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10097 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10098 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10099 return 1;
10100}
10101
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10102/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10103static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10104{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10105 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10106 struct pattern_list *lst;
10107 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10108
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10109 list_for_each_entry(lst, &expr->patterns, list) {
10110 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10111
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10112 /* well-known method */
10113 if (pattern->val.i != HTTP_METH_OTHER) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10114 if (smp->data.u.meth.meth == pattern->val.i)
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10115 return pattern;
10116 else
10117 continue;
10118 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10119
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10120 /* Other method, we must compare the strings */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10121 if (pattern->len != smp->data.u.meth.str.len)
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10122 continue;
10123
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]10124 icase = expr->mflags & PAT_MF_IGNORE_CASE;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10125 if ((icase && strncasecmp(pattern->ptr.str, smp->data.u.meth.str.str, smp->data.u.meth.str.len) == 0) ||
10126 (!icase && strncmp(pattern->ptr.str, smp->data.u.meth.str.str, smp->data.u.meth.str.len) == 0))
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10127 return pattern;
10128 }
10129 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10130}
10131
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10132static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10133smp_fetch_rqver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10134{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10135 struct http_txn *txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10136 char *ptr;
10137 int len;
10138
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10139 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10140
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10141 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10142 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10143
10144 while ((len-- > 0) && (*ptr++ != '/'));
10145 if (len <= 0)
10146 return 0;
10147
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10148 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10149 smp->data.u.str.str = ptr;
10150 smp->data.u.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10151
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10152 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10153 return 1;
10154}
10155
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10156static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10157smp_fetch_stver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10158{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10159 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10160 char *ptr;
10161 int len;
10162
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10163 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10164
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10165 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10166 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10167 return 0;
10168
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10169 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10170 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10171
10172 while ((len-- > 0) && (*ptr++ != '/'));
10173 if (len <= 0)
10174 return 0;
10175
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10176 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10177 smp->data.u.str.str = ptr;
10178 smp->data.u.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10179
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10180 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10181 return 1;
10182}
10183
10184/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10185static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10186smp_fetch_stcode(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10187{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10188 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10189 char *ptr;
10190 int len;
10191
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10192 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10193
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10194 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10195 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10196 return 0;
10197
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10198 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10199 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10200
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10201 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10202 smp->data.u.sint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10203 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10204 return 1;
10205}
10206
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10207/* returns the longest available part of the body. This requires that the body
10208 * has been waited for using http-buffer-request.
10209 */
10210static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10211smp_fetch_body(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10212{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10213 struct http_txn *txn = smp->strm->txn;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10214 struct http_msg *msg;
10215 unsigned long len;
10216 unsigned long block1;
10217 char *body;
10218 struct chunk *temp;
10219
10220 CHECK_HTTP_MESSAGE_FIRST();
10221
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10222 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10223 msg = &txn->req;
10224 else
10225 msg = &txn->rsp;
10226
10227 len = http_body_bytes(msg);
10228 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
10229
10230 block1 = len;
10231 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
10232 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
10233
10234 if (block1 == len) {
10235 /* buffer is not wrapped (or empty) */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10236 smp->data.type = SMP_T_BIN;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10237 smp->data.u.str.str = body;
10238 smp->data.u.str.len = len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10239 smp->flags = SMP_F_VOL_TEST | SMP_F_CONST;
10240 }
10241 else {
10242 /* buffer is wrapped, we need to defragment it */
10243 temp = get_trash_chunk();
10244 memcpy(temp->str, body, block1);
10245 memcpy(temp->str + block1, msg->chn->buf->data, len - block1);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10246 smp->data.type = SMP_T_BIN;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10247 smp->data.u.str.str = temp->str;
10248 smp->data.u.str.len = len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10249 smp->flags = SMP_F_VOL_TEST;
10250 }
10251 return 1;
10252}
10253
10254
10255/* returns the available length of the body. This requires that the body
10256 * has been waited for using http-buffer-request.
10257 */
10258static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10259smp_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]10260{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10261 struct http_txn *txn = smp->strm->txn;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10262 struct http_msg *msg;
10263
10264 CHECK_HTTP_MESSAGE_FIRST();
10265
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10266 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10267 msg = &txn->req;
10268 else
10269 msg = &txn->rsp;
10270
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10271 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10272 smp->data.u.sint = http_body_bytes(msg);
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10273
10274 smp->flags = SMP_F_VOL_TEST;
10275 return 1;
10276}
10277
10278
10279/* returns the advertised length of the body, or the advertised size of the
10280 * chunks available in the buffer. This requires that the body has been waited
10281 * for using http-buffer-request.
10282 */
10283static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10284smp_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]10285{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10286 struct http_txn *txn = smp->strm->txn;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10287 struct http_msg *msg;
10288
10289 CHECK_HTTP_MESSAGE_FIRST();
10290
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10291 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10292 msg = &txn->req;
10293 else
10294 msg = &txn->rsp;
10295
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10296 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10297 smp->data.u.sint = msg->body_len;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10298
10299 smp->flags = SMP_F_VOL_TEST;
10300 return 1;
10301}
10302
10303
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10304/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10305static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10306smp_fetch_url(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10307{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10308 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10309
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10310 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10311
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10312 txn = smp->strm->txn;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10313 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10314 smp->data.u.str.len = txn->req.sl.rq.u_l;
10315 smp->data.u.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]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
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10320static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10321smp_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]10322{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10323 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10324 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10325
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10326 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10327
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10328 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10329 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]10330 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]10331 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10332
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10333 smp->data.type = SMP_T_IPV4;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10334 smp->data.u.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10335 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10336 return 1;
10337}
10338
10339static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10340smp_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]10341{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10342 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10343 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10344
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10345 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10346
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10347 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10348 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]10349 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
10350 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10351
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10352 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10353 smp->data.u.sint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]10354 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10355 return 1;
10356}
10357
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10358/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10359 * Accepts an optional argument of type string containing the header field name,
10360 * and an optional argument of type signed or unsigned integer to request an
10361 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10362 * headers are considered from the first one. It does not stop on commas and
10363 * returns full lines instead (useful for User-Agent or Date for example).
10364 */
10365static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10366smp_fetch_fhdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10367{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10368 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10369 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10370 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10371 int occ = 0;
10372 const char *name_str = NULL;
10373 int name_len = 0;
10374
10375 if (!ctx) {
10376 /* first call */
10377 ctx = &static_hdr_ctx;
10378 ctx->idx = 0;
10379 smp->ctx.a[0] = ctx;
10380 }
10381
10382 if (args) {
10383 if (args[0].type != ARGT_STR)
10384 return 0;
10385 name_str = args[0].data.str.str;
10386 name_len = args[0].data.str.len;
10387
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10388 if (args[1].type == ARGT_SINT)
10389 occ = args[1].data.sint;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10390 }
10391
10392 CHECK_HTTP_MESSAGE_FIRST();
10393
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10394 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10395 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]10396
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10397 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
10398 /* search for header from the beginning */
10399 ctx->idx = 0;
10400
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10401 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10402 /* no explicit occurrence and single fetch => last header by default */
10403 occ = -1;
10404
10405 if (!occ)
10406 /* prepare to report multiple occurrences for ACL fetches */
10407 smp->flags |= SMP_F_NOT_LAST;
10408
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10409 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10410 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10411 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.u.str.str, &smp->data.u.str.len))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10412 return 1;
10413
10414 smp->flags &= ~SMP_F_NOT_LAST;
10415 return 0;
10416}
10417
10418/* 6. Check on HTTP header count. The number of occurrences is returned.
10419 * Accepts exactly 1 argument of type string. It does not stop on commas and
10420 * returns full lines instead (useful for User-Agent or Date for example).
10421 */
10422static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10423smp_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]10424{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10425 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10426 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10427 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10428 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10429 const char *name = NULL;
10430 int len = 0;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10431
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10432 if (args && args->type == ARGT_STR) {
10433 name = args->data.str.str;
10434 len = args->data.str.len;
10435 }
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10436
10437 CHECK_HTTP_MESSAGE_FIRST();
10438
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10439 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10440 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]10441
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10442 ctx.idx = 0;
10443 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10444 while (http_find_full_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10445 cnt++;
10446
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10447 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10448 smp->data.u.sint = cnt;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10449 smp->flags = SMP_F_VOL_HDR;
10450 return 1;
10451}
10452
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10453static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10454smp_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]10455{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10456 struct hdr_idx *idx;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10457 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10458 const struct http_msg *msg;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10459 struct chunk *temp;
10460 char del = ',';
10461
10462 if (args && args->type == ARGT_STR)
10463 del = *args[0].data.str.str;
10464
10465 CHECK_HTTP_MESSAGE_FIRST();
10466
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10467 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10468 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]10469
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10470 temp = get_trash_chunk();
10471
10472 ctx.idx = 0;
10473 while (http_find_next_header(msg->chn->buf->p, idx, &ctx)) {
10474 if (temp->len)
10475 temp->str[temp->len++] = del;
10476 memcpy(temp->str + temp->len, ctx.line, ctx.del);
10477 temp->len += ctx.del;
10478 }
10479
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10480 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10481 smp->data.u.str.str = temp->str;
10482 smp->data.u.str.len = temp->len;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10483 smp->flags = SMP_F_VOL_HDR;
10484 return 1;
10485}
10486
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10487/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10488 * Accepts an optional argument of type string containing the header field name,
10489 * and an optional argument of type signed or unsigned integer to request an
10490 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10491 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10492 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10493static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10494smp_fetch_hdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10495{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10496 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10497 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10498 const struct http_msg *msg;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10499 int occ = 0;
10500 const char *name_str = NULL;
10501 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10502
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10503 if (!ctx) {
10504 /* first call */
10505 ctx = &static_hdr_ctx;
10506 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]10507 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10508 }
10509
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10510 if (args) {
10511 if (args[0].type != ARGT_STR)
10512 return 0;
10513 name_str = args[0].data.str.str;
10514 name_len = args[0].data.str.len;
10515
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]10516 if (args[1].type == ARGT_SINT)
10517 occ = args[1].data.sint;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10518 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10519
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10520 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10521
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10522 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10523 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]10524
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10525 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10526 /* search for header from the beginning */
10527 ctx->idx = 0;
10528
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10529 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10530 /* no explicit occurrence and single fetch => last header by default */
10531 occ = -1;
10532
10533 if (!occ)
10534 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10535 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]10536
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10537 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10538 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10539 if (http_get_hdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.u.str.str, &smp->data.u.str.len))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10540 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10541
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10542 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10543 return 0;
10544}
10545
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10546/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10547 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10548 */
10549static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10550smp_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]10551{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10552 struct hdr_idx *idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10553 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10554 const struct http_msg *msg;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10555 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10556 const char *name = NULL;
10557 int len = 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10558
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10559 if (args && args->type == ARGT_STR) {
10560 name = args->data.str.str;
10561 len = args->data.str.len;
10562 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10563
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10564 CHECK_HTTP_MESSAGE_FIRST();
10565
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10566 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10567 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]10568
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10569 ctx.idx = 0;
10570 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10571 while (http_find_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10572 cnt++;
10573
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10574 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10575 smp->data.u.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10576 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10577 return 1;
10578}
10579
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10580/* Fetch an HTTP header's integer value. The integer value is returned. It
10581 * takes a mandatory argument of type string and an optional one of type int
10582 * to designate a specific occurrence. It returns an unsigned integer, which
10583 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10584 */
10585static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10586smp_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]10587{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10588 int ret = smp_fetch_hdr(args, smp, kw, private);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10589
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10590 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10591 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10592 smp->data.u.sint = strl2ic(smp->data.u.str.str, smp->data.u.str.len);
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10593 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10594
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10595 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10596}
10597
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10598/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
10599 * and an optional one of type int to designate a specific occurrence.
10600 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10601 */
10602static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10603smp_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]10604{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10605 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10606
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10607 while ((ret = smp_fetch_hdr(args, smp, kw, private)) > 0) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10608 if (url2ipv4((char *)smp->data.u.str.str, &smp->data.u.ipv4)) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10609 smp->data.type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10610 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10611 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10612 struct chunk *temp = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10613 if (smp->data.u.str.len < temp->size - 1) {
10614 memcpy(temp->str, smp->data.u.str.str, smp->data.u.str.len);
10615 temp->str[smp->data.u.str.len] = '\0';
10616 if (inet_pton(AF_INET6, temp->str, &smp->data.u.ipv6)) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10617 smp->data.type = SMP_T_IPV6;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10618 break;
10619 }
10620 }
10621 }
10622
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10623 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10624 if (!(smp->flags & SMP_F_NOT_LAST))
10625 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10626 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10627 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10628}
10629
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10630/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
10631 * the first '/' after the possible hostname, and ends before the possible '?'.
10632 */
10633static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10634smp_fetch_path(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10635{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10636 struct http_txn *txn;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10637 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10638
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10639 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10640
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10641 txn = smp->strm->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10642 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]10643 ptr = http_get_path(txn);
10644 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10645 return 0;
10646
10647 /* OK, we got the '/' ! */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10648 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10649 smp->data.u.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10650
10651 while (ptr < end && *ptr != '?')
10652 ptr++;
10653
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10654 smp->data.u.str.len = ptr - smp->data.u.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10655 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10656 return 1;
10657}
10658
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10659/* This produces a concatenation of the first occurrence of the Host header
10660 * followed by the path component if it begins with a slash ('/'). This means
10661 * that '*' will not be added, resulting in exactly the first Host entry.
10662 * If no Host header is found, then the path is returned as-is. The returned
10663 * 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]10664 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10665 */
10666static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10667smp_fetch_base(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10668{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10669 struct http_txn *txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10670 char *ptr, *end, *beg;
10671 struct hdr_ctx ctx;
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10672 struct chunk *temp;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10673
10674 CHECK_HTTP_MESSAGE_FIRST();
10675
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10676 txn = smp->strm->txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10677 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10678 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]10679 return smp_fetch_path(args, smp, kw, private);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10680
10681 /* 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]10682 temp = get_trash_chunk();
10683 memcpy(temp->str, ctx.line + ctx.val, ctx.vlen);
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10684 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10685 smp->data.u.str.str = temp->str;
10686 smp->data.u.str.len = ctx.vlen;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10687
10688 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10689 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]10690 beg = http_get_path(txn);
10691 if (!beg)
10692 beg = end;
10693
10694 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10695
10696 if (beg < ptr && *beg == '/') {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10697 memcpy(smp->data.u.str.str + smp->data.u.str.len, beg, ptr - beg);
10698 smp->data.u.str.len += ptr - beg;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10699 }
10700
10701 smp->flags = SMP_F_VOL_1ST;
10702 return 1;
10703}
10704
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10705/* This produces a 32-bit hash of the concatenation of the first occurrence of
10706 * the Host header followed by the path component if it begins with a slash ('/').
10707 * This means that '*' will not be added, resulting in exactly the first Host
10708 * 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]10709 * is hashed using the path hash followed by a full avalanche hash and provides a
10710 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10711 * high-traffic sites without having to store whole paths.
10712 */
Thierry FOURNIER055b9d52014-07-15 16:11:07 +0200[diff] [blame]10713int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10714smp_fetch_base32(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10715{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10716 struct http_txn *txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10717 struct hdr_ctx ctx;
10718 unsigned int hash = 0;
10719 char *ptr, *beg, *end;
10720 int len;
10721
10722 CHECK_HTTP_MESSAGE_FIRST();
10723
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10724 txn = smp->strm->txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10725 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10726 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]10727 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10728 ptr = ctx.line + ctx.val;
10729 len = ctx.vlen;
10730 while (len--)
10731 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10732 }
10733
10734 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10735 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]10736 beg = http_get_path(txn);
10737 if (!beg)
10738 beg = end;
10739
10740 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10741
10742 if (beg < ptr && *beg == '/') {
10743 while (beg < ptr)
10744 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10745 }
10746 hash = full_hash(hash);
10747
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10748 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10749 smp->data.u.sint = hash;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10750 smp->flags = SMP_F_VOL_1ST;
10751 return 1;
10752}
10753
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10754/* 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]10755 * path as returned by smp_fetch_base32(). The idea is to have per-source and
10756 * per-path counters. The result is a binary block from 8 to 20 bytes depending
10757 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10758 * that in environments where IPv6 is insignificant, truncating the output to
10759 * 8 bytes would still work.
10760 */
10761static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10762smp_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]10763{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10764 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10765 struct connection *cli_conn = objt_conn(smp->sess->origin);
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10766
10767 if (!cli_conn)
10768 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10769
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10770 if (!smp_fetch_base32(args, smp, kw, private))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10771 return 0;
10772
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10773 temp = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10774 *(unsigned int *)temp->str = htonl(smp->data.u.sint);
Willy Tarreau5ad6e1d2014-07-15 21:34:06 +0200[diff] [blame]10775 temp->len += sizeof(unsigned int);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10776
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10777 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10778 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10779 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]10780 temp->len += 4;
10781 break;
10782 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10783 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]10784 temp->len += 16;
10785 break;
10786 default:
10787 return 0;
10788 }
10789
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10790 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10791 smp->data.type = SMP_T_BIN;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10792 return 1;
10793}
10794
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10795/* Extracts the query string, which comes after the question mark '?'. If no
10796 * question mark is found, nothing is returned. Otherwise it returns a sample
10797 * of type string carrying the whole query string.
10798 */
10799static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10800smp_fetch_query(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10801{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10802 struct http_txn *txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10803 char *ptr, *end;
10804
10805 CHECK_HTTP_MESSAGE_FIRST();
10806
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10807 txn = smp->strm->txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10808 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
10809 end = ptr + txn->req.sl.rq.u_l;
10810
10811 /* look up the '?' */
10812 do {
10813 if (ptr == end)
10814 return 0;
10815 } while (*ptr++ != '?');
10816
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10817 smp->data.type = SMP_T_STR;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10818 smp->data.u.str.str = ptr;
10819 smp->data.u.str.len = end - ptr;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10820 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
10821 return 1;
10822}
10823
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10824static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10825smp_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]10826{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10827 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
10828 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
10829 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10830
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10831 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10832
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10833 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10834 smp->data.u.sint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10835 return 1;
10836}
10837
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10838/* return a valid test if the current request is the first one on the connection */
10839static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10840smp_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]10841{
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10842 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10843 smp->data.u.sint = !(smp->strm->txn->flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10844 return 1;
10845}
10846
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10847/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10848static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10849smp_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]10850{
10851
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10852 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10853 return 0;
10854
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10855 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10856
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10857 if (!get_http_auth(smp->strm))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10858 return 0;
10859
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10860 smp->data.type = SMP_T_BOOL;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10861 smp->data.u.sint = check_user(args->data.usr, smp->strm->txn->auth.user,
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10862 smp->strm->txn->auth.pass);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10863 return 1;
10864}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10865
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10866/* Accepts exactly 1 argument of type userlist */
10867static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10868smp_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]10869{
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10870 if (!args || args->type != ARGT_USR)
10871 return 0;
10872
10873 CHECK_HTTP_MESSAGE_FIRST();
10874
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10875 if (!get_http_auth(smp->strm))
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10876 return 0;
10877
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10878 /* if the user does not belong to the userlist or has a wrong password,
10879 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10880 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10881 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10882 if (!check_user(args->data.usr, smp->strm->txn->auth.user,
10883 smp->strm->txn->auth.pass))
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10884 return 0;
10885
10886 /* pat_match_auth() will need the user list */
10887 smp->ctx.a[0] = args->data.usr;
10888
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]10889 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10890 smp->flags = SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]10891 smp->data.u.str.str = smp->strm->txn->auth.user;
10892 smp->data.u.str.len = strlen(smp->strm->txn->auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10893
10894 return 1;
10895}
10896
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10897/* Try to find the next occurrence of a cookie name in a cookie header value.
10898 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
10899 * the cookie value is returned into *value and *value_l, and the function
10900 * returns a pointer to the next pointer to search from if the value was found.
10901 * Otherwise if the cookie was not found, NULL is returned and neither value
10902 * nor value_l are touched. The input <hdr> string should first point to the
10903 * header's value, and the <hdr_end> pointer must point to the first character
10904 * not part of the value. <list> must be non-zero if value may represent a list
10905 * of values (cookie headers). This makes it faster to abort parsing when no
10906 * list is expected.
10907 */
10908static char *
10909extract_cookie_value(char *hdr, const char *hdr_end,
10910 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]10911 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10912{
10913 char *equal, *att_end, *att_beg, *val_beg, *val_end;
10914 char *next;
10915
10916 /* we search at least a cookie name followed by an equal, and more
10917 * generally something like this :
10918 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
10919 */
10920 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
10921 /* Iterate through all cookies on this line */
10922
10923 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
10924 att_beg++;
10925
10926 /* find att_end : this is the first character after the last non
10927 * space before the equal. It may be equal to hdr_end.
10928 */
10929 equal = att_end = att_beg;
10930
10931 while (equal < hdr_end) {
10932 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
10933 break;
10934 if (http_is_spht[(unsigned char)*equal++])
10935 continue;
10936 att_end = equal;
10937 }
10938
10939 /* here, <equal> points to '=', a delimitor or the end. <att_end>
10940 * is between <att_beg> and <equal>, both may be identical.
10941 */
10942
10943 /* look for end of cookie if there is an equal sign */
10944 if (equal < hdr_end && *equal == '=') {
10945 /* look for the beginning of the value */
10946 val_beg = equal + 1;
10947 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
10948 val_beg++;
10949
10950 /* find the end of the value, respecting quotes */
10951 next = find_cookie_value_end(val_beg, hdr_end);
10952
10953 /* make val_end point to the first white space or delimitor after the value */
10954 val_end = next;
10955 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
10956 val_end--;
10957 } else {
10958 val_beg = val_end = next = equal;
10959 }
10960
10961 /* We have nothing to do with attributes beginning with '$'. However,
10962 * they will automatically be removed if a header before them is removed,
10963 * since they're supposed to be linked together.
10964 */
10965 if (*att_beg == '$')
10966 continue;
10967
10968 /* Ignore cookies with no equal sign */
10969 if (equal == next)
10970 continue;
10971
10972 /* Now we have the cookie name between att_beg and att_end, and
10973 * its value between val_beg and val_end.
10974 */
10975
10976 if (att_end - att_beg == cookie_name_l &&
10977 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
10978 /* let's return this value and indicate where to go on from */
10979 *value = val_beg;
10980 *value_l = val_end - val_beg;
10981 return next + 1;
10982 }
10983
10984 /* Set-Cookie headers only have the name in the first attr=value part */
10985 if (!list)
10986 break;
10987 }
10988
10989 return NULL;
10990}
10991
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10992/* Fetch a captured HTTP request header. The index is the position of
10993 * the "capture" option in the configuration file
10994 */
10995static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10996smp_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]10997{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10998 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10999 int idx;
11000
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11001 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11002 return 0;
11003
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11004 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11005
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11006 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]11007 return 0;
11008
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11009 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11010 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11011 smp->data.u.str.str = smp->strm->req_cap[idx];
11012 smp->data.u.str.len = strlen(smp->strm->req_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11013
11014 return 1;
11015}
11016
11017/* Fetch a captured HTTP response header. The index is the position of
11018 * the "capture" option in the configuration file
11019 */
11020static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11021smp_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]11022{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11023 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11024 int idx;
11025
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11026 if (!args || args->type != ARGT_SINT)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11027 return 0;
11028
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11029 idx = args->data.sint;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11030
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11031 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]11032 return 0;
11033
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11034 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11035 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11036 smp->data.u.str.str = smp->strm->res_cap[idx];
11037 smp->data.u.str.len = strlen(smp->strm->res_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11038
11039 return 1;
11040}
11041
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11042/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
11043static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11044smp_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]11045{
11046 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11047 struct http_txn *txn = smp->strm->txn;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11048 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11049
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11050 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11051 return 0;
11052
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11053 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11054
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11055 while (*ptr != ' ' && *ptr != '\0') /* find first space */
11056 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11057
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11058 temp = get_trash_chunk();
11059 temp->str = txn->uri;
11060 temp->len = ptr - txn->uri;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11061 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11062 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11063 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11064
11065 return 1;
11066
11067}
11068
11069/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
11070static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11071smp_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]11072{
11073 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11074 struct http_txn *txn = smp->strm->txn;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11075 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11076
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11077 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11078 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11079
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11080 ptr = txn->uri;
11081
11082 while (*ptr != ' ' && *ptr != '\0') /* find first space */
11083 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11084
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11085 if (!*ptr)
11086 return 0;
11087
11088 ptr++; /* skip the space */
11089
11090 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11091 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11092 if (!ptr)
11093 return 0;
11094 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
11095 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11096
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11097 smp->data.u.str = *temp;
11098 smp->data.u.str.len = ptr - temp->str;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11099 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11100 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11101
11102 return 1;
11103}
11104
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11105/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
11106 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11107 */
11108static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11109smp_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]11110{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11111 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11112
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11113 if (!txn || txn->req.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11114 return 0;
11115
11116 if (txn->req.flags & HTTP_MSGF_VER_11)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11117 smp->data.u.str.str = "HTTP/1.1";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11118 else
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11119 smp->data.u.str.str = "HTTP/1.0";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11120
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11121 smp->data.u.str.len = 8;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11122 smp->data.type = SMP_T_STR;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11123 smp->flags = SMP_F_CONST;
11124 return 1;
11125
11126}
11127
11128/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
11129 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11130 */
11131static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11132smp_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]11133{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11134 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11135
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11136 if (!txn || txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11137 return 0;
11138
11139 if (txn->rsp.flags & HTTP_MSGF_VER_11)
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11140 smp->data.u.str.str = "HTTP/1.1";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11141 else
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11142 smp->data.u.str.str = "HTTP/1.0";
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11143
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11144 smp->data.u.str.len = 8;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11145 smp->data.type = SMP_T_STR;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11146 smp->flags = SMP_F_CONST;
11147 return 1;
11148
11149}
11150
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11151
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11152/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11153 * 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]11154 * 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]11155 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11156 * 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]11157 * Accepts exactly 1 argument of type string. If the input options indicate
11158 * that no iterating is desired, then only last value is fetched if any.
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]11159 * The returned sample is of type CSTR. Can be used to parse cookies in other
11160 * files.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11161 */
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11162int 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]11163{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11164 struct http_txn *txn;
11165 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11166 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11167 const struct http_msg *msg;
11168 const char *hdr_name;
11169 int hdr_name_len;
11170 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11171 int occ = 0;
11172 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11173
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11174 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11175 return 0;
11176
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11177 if (!ctx) {
11178 /* first call */
11179 ctx = &static_hdr_ctx;
11180 ctx->idx = 0;
11181 smp->ctx.a[2] = ctx;
11182 }
11183
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11184 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11185
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11186 txn = smp->strm->txn;
11187 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11188
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11189 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11190 msg = &txn->req;
11191 hdr_name = "Cookie";
11192 hdr_name_len = 6;
11193 } else {
11194 msg = &txn->rsp;
11195 hdr_name = "Set-Cookie";
11196 hdr_name_len = 10;
11197 }
11198
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11199 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11200 /* no explicit occurrence and single fetch => last cookie by default */
11201 occ = -1;
11202
11203 /* OK so basically here, either we want only one value and it's the
11204 * last one, or we want to iterate over all of them and we fetch the
11205 * next one.
11206 */
11207
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11208 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11209 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11210 /* search for the header from the beginning, we must first initialize
11211 * the search parameters.
11212 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11213 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11214 ctx->idx = 0;
11215 }
11216
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11217 smp->flags |= SMP_F_VOL_HDR;
11218
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11219 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11220 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
11221 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11222 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
11223 goto out;
11224
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11225 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11226 continue;
11227
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11228 smp->ctx.a[0] = ctx->line + ctx->val;
11229 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11230 }
11231
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11232 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11233 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11234 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]11235 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11236 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11237 &smp->data.u.str.str,
11238 &smp->data.u.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11239 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11240 found = 1;
11241 if (occ >= 0) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11242 /* one value was returned into smp->data.u.str.{str,len} */
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11243 smp->flags |= SMP_F_NOT_LAST;
11244 return 1;
11245 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11246 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11247 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11248 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11249 /* all cookie headers and values were scanned. If we're looking for the
11250 * last occurrence, we may return it now.
11251 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11252 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11253 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11254 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11255}
11256
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11257/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11258 * 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]11259 * multiple cookies may be parsed on the same line. The returned sample is of
11260 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11261 */
11262static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11263smp_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]11264{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11265 struct http_txn *txn;
11266 struct hdr_idx *idx;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11267 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11268 const struct http_msg *msg;
11269 const char *hdr_name;
11270 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11271 int cnt;
11272 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11273 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11274
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11275 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11276 return 0;
11277
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11278 CHECK_HTTP_MESSAGE_FIRST();
11279
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11280 txn = smp->strm->txn;
11281 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11282
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11283 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11284 msg = &txn->req;
11285 hdr_name = "Cookie";
11286 hdr_name_len = 6;
11287 } else {
11288 msg = &txn->rsp;
11289 hdr_name = "Set-Cookie";
11290 hdr_name_len = 10;
11291 }
11292
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11293 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]11294 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11295 ctx.idx = 0;
11296 cnt = 0;
11297
11298 while (1) {
11299 /* Note: val_beg == NULL every time we need to fetch a new header */
11300 if (!val_beg) {
11301 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
11302 break;
11303
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11304 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11305 continue;
11306
11307 val_beg = ctx.line + ctx.val;
11308 val_end = val_beg + ctx.vlen;
11309 }
11310
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11311 smp->data.type = SMP_T_STR;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11312 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11313 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11314 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11315 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11316 &smp->data.u.str.str,
11317 &smp->data.u.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11318 cnt++;
11319 }
11320 }
11321
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11322 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11323 smp->data.u.sint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11324 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11325 return 1;
11326}
11327
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11328/* Fetch an cookie's integer value. The integer value is returned. It
11329 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
11330 */
11331static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11332smp_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]11333{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11334 int ret = smp_fetch_cookie(args, smp, kw, private);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11335
11336 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11337 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11338 smp->data.u.sint = strl2ic(smp->data.u.str.str, smp->data.u.str.len);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11339 }
11340
11341 return ret;
11342}
11343
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11344/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]11345/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11346/************************************************************************/
11347
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11348/*
11349 * Given a path string and its length, find the position of beginning of the
11350 * query string. Returns NULL if no query string is found in the path.
11351 *
11352 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
11353 *
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11354 * find_query_string(path, n, '?') points to "yo=mama;ye=daddy" string.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11355 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11356static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11357{
11358 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]11359
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11360 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11361 return p ? p + 1 : NULL;
11362}
11363
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11364static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11365{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11366 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11367}
11368
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11369/* after increasing a pointer value, it can exceed the first buffer
11370 * size. This function transform the value of <ptr> according with
11371 * the expected position. <chunks> is an array of the one or two
11372 * avalaible chunks. The first value is the start of the first chunk,
11373 * the second value if the end+1 of the first chunks. The third value
11374 * is NULL or the start of the second chunk and the fourth value is
11375 * the end+1 of the second chunk. The function returns 1 if does a
11376 * wrap, else returns 0.
11377 */
11378static inline int fix_pointer_if_wrap(const char **chunks, const char **ptr)
11379{
11380 if (*ptr < chunks[1])
11381 return 0;
11382 if (!chunks[2])
11383 return 0;
11384 *ptr = chunks[2] + ( *ptr - chunks[1] );
11385 return 1;
11386}
11387
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11388/*
11389 * Given a url parameter, find the starting position of the first occurence,
11390 * or NULL if the parameter is not found.
11391 *
11392 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
11393 * the function will return query_string+8.
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11394 *
11395 * Warning:this function returns a pointer that can be point to the first chunk
11396 * or the second chunk. The caller must be check the position before using the
11397 * result.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11398 */
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11399static const char *
11400find_url_param_pos(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11401 const char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11402 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11403{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11404 const char *pos, *last, *equal;
11405 const char **bufs = chunks;
11406 int l1, l2;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11407
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11408
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11409 pos = bufs[0];
11410 last = bufs[1];
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11411 while (pos <= last) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11412 /* Check the equal. */
11413 equal = pos + url_param_name_l;
11414 if (fix_pointer_if_wrap(chunks, &equal)) {
11415 if (equal >= chunks[3])
11416 return NULL;
11417 } else {
11418 if (equal >= chunks[1])
11419 return NULL;
11420 }
11421 if (*equal == '=') {
11422 if (pos + url_param_name_l > last) {
11423 /* process wrap case, we detect a wrap. In this case, the
11424 * comparison is performed in two parts.
11425 */
11426
11427 /* This is the end, we dont have any other chunk. */
11428 if (bufs != chunks || !bufs[2])
11429 return NULL;
11430
11431 /* Compute the length of each part of the comparison. */
11432 l1 = last - pos;
11433 l2 = url_param_name_l - l1;
11434
11435 /* The second buffer is too short to contain the compared string. */
11436 if (bufs[2] + l2 > bufs[3])
11437 return NULL;
11438
11439 if (memcmp(pos, url_param_name, l1) == 0 &&
11440 memcmp(bufs[2], url_param_name+l1, l2) == 0)
11441 return pos;
11442
11443 /* Perform wrapping and jump the string who fail the comparison. */
11444 bufs += 2;
11445 pos = bufs[0] + l2;
11446 last = bufs[1];
11447
11448 } else {
11449 /* process a simple comparison. */
11450 if (memcmp(pos, url_param_name, url_param_name_l) == 0) {
11451 return pos; }
11452 pos += url_param_name_l + 1;
11453 if (fix_pointer_if_wrap(chunks, &pos))
11454 last = bufs[2];
11455 }
11456 }
11457
11458 while (1) {
11459 /* Look for the next delimiter. */
11460 while (pos <= last && !is_param_delimiter(*pos, delim))
11461 pos++;
11462 if (pos < last)
11463 break;
11464 /* process buffer wrapping. */
11465 if (bufs != chunks || !bufs[2])
11466 return NULL;
11467 bufs += 2;
11468 pos = bufs[0];
11469 last = bufs[1];
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11470 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11471 pos++;
11472 }
11473 return NULL;
11474}
11475
11476/*
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11477 * Given a url parameter name and a query string, returns its value and size
11478 * into *value and *value_l respectively, and returns non-zero. An empty
11479 * url_param_name matches the first available parameter. If the parameter is
11480 * not found, zero is returned and value/value_l are not touched.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11481 */
11482static int
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11483find_next_url_param(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11484 const char* url_param_name, size_t url_param_name_l,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11485 const char **vstart, const char **vend, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11486{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11487 const char *arg_start, *qs_end;
11488 const char *value_start, *value_end;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11489
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11490 arg_start = chunks[0];
11491 qs_end = chunks[1];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11492 if (url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11493 /* Looks for an argument name. */
11494 arg_start = find_url_param_pos(chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11495 url_param_name, url_param_name_l,
11496 delim);
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11497 /* Check for wrapping. */
11498 if (arg_start > qs_end)
11499 qs_end = chunks[3];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11500 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11501 if (!arg_start)
11502 return 0;
11503
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11504 if (!url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11505 while (1) {
11506 /* looks for the first argument. */
11507 value_start = memchr(arg_start, '=', qs_end - arg_start);
11508 if (!value_start) {
11509
11510 /* Check for wrapping. */
11511 if (arg_start >= chunks[0] &&
11512 arg_start <= chunks[1] &&
11513 chunks[2]) {
11514 arg_start = chunks[2];
11515 qs_end = chunks[3];
11516 continue;
11517 }
11518 return 0;
11519 }
11520 break;
11521 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11522 value_start++;
11523 }
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11524 else {
11525 /* Jump the argument length. */
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11526 value_start = arg_start + url_param_name_l + 1;
11527
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11528 /* Check for pointer wrapping. */
11529 if (fix_pointer_if_wrap(chunks, &value_start)) {
11530 /* Update the end pointer. */
11531 qs_end = chunks[3];
11532
11533 /* Check for overflow. */
11534 if (value_start > qs_end)
11535 return 0;
11536 }
11537 }
11538
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11539 value_end = value_start;
11540
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11541 while (1) {
11542 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
11543 value_end++;
11544 if (value_end < qs_end)
11545 break;
11546 /* process buffer wrapping. */
11547 if (value_end >= chunks[0] &&
11548 value_end <= chunks[1] &&
11549 chunks[2]) {
11550 value_end = chunks[2];
11551 qs_end = chunks[3];
11552 continue;
11553 }
11554 break;
11555 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11556
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11557 *vstart = value_start;
11558 *vend = value_end;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]11559 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11560}
11561
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11562/* This scans a URL-encoded query string. It takes an optionally wrapping
11563 * string whose first contigous chunk has its beginning in ctx->a[0] and end
11564 * in ctx->a[1], and the optional second part in (ctx->a[2]..ctx->a[3]). The
11565 * pointers are updated for next iteration before leaving.
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11566 */
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11567static int
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11568smp_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]11569{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11570 const char *vstart, *vend;
11571 struct chunk *temp;
11572 const char **chunks = (const char **)smp->ctx.a;
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11573
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11574 if (!find_next_url_param(chunks,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11575 name, name_len,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11576 &vstart, &vend,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11577 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11578 return 0;
11579
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11580 /* Create sample. If the value is contiguous, return the pointer as CONST,
11581 * if the value is wrapped, copy-it in a buffer.
11582 */
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11583 smp->data.type = SMP_T_STR;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11584 if (chunks[2] &&
11585 vstart >= chunks[0] && vstart <= chunks[1] &&
11586 vend >= chunks[2] && vend <= chunks[3]) {
11587 /* Wrapped case. */
11588 temp = get_trash_chunk();
11589 memcpy(temp->str, vstart, chunks[1] - vstart);
11590 memcpy(temp->str + ( chunks[1] - vstart ), chunks[2], vend - chunks[2]);
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11591 smp->data.u.str.str = temp->str;
11592 smp->data.u.str.len = ( chunks[1] - vstart ) + ( vend - chunks[2] );
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11593 } else {
11594 /* Contiguous case. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11595 smp->data.u.str.str = (char *)vstart;
11596 smp->data.u.str.len = vend - vstart;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11597 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
11598 }
11599
11600 /* Update context, check wrapping. */
11601 chunks[0] = vend;
11602 if (chunks[2] && vend >= chunks[2] && vend <= chunks[3]) {
11603 chunks[1] = chunks[3];
11604 chunks[2] = NULL;
11605 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11606
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11607 if (chunks[0] < chunks[1])
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11608 smp->flags |= SMP_F_NOT_LAST;
11609
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11610 return 1;
11611}
11612
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11613/* This function iterates over each parameter of the query string. It uses
11614 * 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]11615 * parameter. Since it uses smp_fetch_param(), ctx->a[2..3] are both NULL.
11616 * An optional parameter name is passed in args[0], otherwise any parameter is
11617 * considered. It supports an optional delimiter argument for the beginning of
11618 * the string in args[1], which defaults to "?".
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11619 */
11620static int
11621smp_fetch_url_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11622{
11623 struct http_msg *msg;
11624 char delim = '?';
11625 const char *name;
11626 int name_len;
11627
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11628 if (!args ||
11629 (args[0].type && args[0].type != ARGT_STR) ||
11630 (args[1].type && args[1].type != ARGT_STR))
11631 return 0;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11632
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11633 name = "";
11634 name_len = 0;
11635 if (args->type == ARGT_STR) {
11636 name = args->data.str.str;
11637 name_len = args->data.str.len;
11638 }
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11639
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11640 if (args[1].type)
11641 delim = *args[1].data.str.str;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11642
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11643 if (!smp->ctx.a[0]) { // first call, find the query string
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11644 CHECK_HTTP_MESSAGE_FIRST();
11645
11646 msg = &smp->strm->txn->req;
11647
11648 smp->ctx.a[0] = find_param_list(msg->chn->buf->p + msg->sl.rq.u,
11649 msg->sl.rq.u_l, delim);
11650 if (!smp->ctx.a[0])
11651 return 0;
11652
11653 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]11654
11655 /* Assume that the context is filled with NULL pointer
11656 * before the first call.
11657 * smp->ctx.a[2] = NULL;
11658 * smp->ctx.a[3] = NULL;
11659 */
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11660 }
11661
11662 return smp_fetch_param(delim, name, name_len, args, smp, kw, private);
11663}
11664
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11665/* This function iterates over each parameter of the body. This requires
11666 * that the body has been waited for using http-buffer-request. It uses
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11667 * ctx->a[0] and ctx->a[1] to store the beginning and end of the first
11668 * contigous part of the body, and optionally ctx->a[2..3] to reference the
11669 * optional second part if the body wraps at the end of the buffer. An optional
11670 * parameter name is passed in args[0], otherwise any parameter is considered.
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11671 */
11672static int
11673smp_fetch_body_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11674{
11675 struct http_txn *txn = smp->strm->txn;
11676 struct http_msg *msg;
11677 unsigned long len;
11678 unsigned long block1;
11679 char *body;
11680 const char *name;
11681 int name_len;
11682
11683 if (!args || (args[0].type && args[0].type != ARGT_STR))
11684 return 0;
11685
11686 name = "";
11687 name_len = 0;
11688 if (args[0].type == ARGT_STR) {
11689 name = args[0].data.str.str;
11690 name_len = args[0].data.str.len;
11691 }
11692
11693 if (!smp->ctx.a[0]) { // first call, find the query string
11694 CHECK_HTTP_MESSAGE_FIRST();
11695
11696 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
11697 msg = &txn->req;
11698 else
11699 msg = &txn->rsp;
11700
11701 len = http_body_bytes(msg);
11702 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
11703
11704 block1 = len;
11705 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
11706 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
11707
11708 if (block1 == len) {
11709 /* buffer is not wrapped (or empty) */
11710 smp->ctx.a[0] = body;
11711 smp->ctx.a[1] = body + len;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11712
11713 /* Assume that the context is filled with NULL pointer
11714 * before the first call.
11715 * smp->ctx.a[2] = NULL;
11716 * smp->ctx.a[3] = NULL;
11717 */
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11718 }
11719 else {
11720 /* buffer is wrapped, we need to defragment it */
11721 smp->ctx.a[0] = body;
11722 smp->ctx.a[1] = body + block1;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11723 smp->ctx.a[2] = msg->chn->buf->data;
11724 smp->ctx.a[3] = msg->chn->buf->data + ( len - block1 );
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11725 }
11726 }
11727 return smp_fetch_param('&', name, name_len, args, smp, kw, private);
11728}
11729
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11730/* Return the signed integer value for the specified url parameter (see url_param
11731 * above).
11732 */
11733static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11734smp_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]11735{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11736 int ret = smp_fetch_url_param(args, smp, kw, private);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11737
11738 if (ret > 0) {
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11739 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11740 smp->data.u.sint = strl2ic(smp->data.u.str.str, smp->data.u.str.len);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11741 }
11742
11743 return ret;
11744}
11745
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11746/* This produces a 32-bit hash of the concatenation of the first occurrence of
11747 * the Host header followed by the path component if it begins with a slash ('/').
11748 * This means that '*' will not be added, resulting in exactly the first Host
11749 * entry. If no Host header is found, then the path is used. The resulting value
11750 * is hashed using the url hash followed by a full avalanche hash and provides a
11751 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
11752 * high-traffic sites without having to store whole paths.
11753 * this differs from the base32 functions in that it includes the url parameters
11754 * as well as the path
11755 */
11756static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11757smp_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]11758{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11759 struct http_txn *txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11760 struct hdr_ctx ctx;
11761 unsigned int hash = 0;
11762 char *ptr, *beg, *end;
11763 int len;
11764
11765 CHECK_HTTP_MESSAGE_FIRST();
11766
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11767 txn = smp->strm->txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11768 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11769 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]11770 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
11771 ptr = ctx.line + ctx.val;
11772 len = ctx.vlen;
11773 while (len--)
11774 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
11775 }
11776
11777 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11778 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]11779 beg = http_get_path(txn);
11780 if (!beg)
11781 beg = end;
11782
11783 for (ptr = beg; ptr < end ; ptr++);
11784
11785 if (beg < ptr && *beg == '/') {
11786 while (beg < ptr)
11787 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
11788 }
11789 hash = full_hash(hash);
11790
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11791 smp->data.type = SMP_T_SINT;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11792 smp->data.u.sint = hash;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11793 smp->flags = SMP_F_VOL_1ST;
11794 return 1;
11795}
11796
11797/* This concatenates the source address with the 32-bit hash of the Host and
11798 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
11799 * per-url counters. The result is a binary block from 8 to 20 bytes depending
11800 * on the source address length. The URL hash is stored before the address so
11801 * that in environments where IPv6 is insignificant, truncating the output to
11802 * 8 bytes would still work.
11803 */
11804static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11805smp_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]11806{
11807 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11808 struct connection *cli_conn = objt_conn(smp->sess->origin);
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11809 unsigned int hash;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11810
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11811 if (!smp_fetch_url32(args, smp, kw, private))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11812 return 0;
11813
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11814 /* The returned hash is a 32 bytes integer. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11815 hash = smp->data.u.sint;
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11816
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11817 temp = get_trash_chunk();
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]11818 memcpy(temp->str + temp->len, &hash, sizeof(hash));
11819 temp->len += sizeof(hash);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11820
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11821 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11822 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11823 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]11824 temp->len += 4;
11825 break;
11826 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11827 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]11828 temp->len += 16;
11829 break;
11830 default:
11831 return 0;
11832 }
11833
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11834 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11835 smp->data.type = SMP_T_BIN;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11836 return 1;
11837}
11838
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11839/* This function is used to validate the arguments passed to any "hdr" fetch
11840 * keyword. These keywords support an optional positive or negative occurrence
11841 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
11842 * is assumed that the types are already the correct ones. Returns 0 on error,
11843 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
11844 * error message in case of error, that the caller is responsible for freeing.
11845 * The initial location must either be freeable or NULL.
11846 */
Thierry FOURNIER49f45af2014-12-08 19:50:43 +0100[diff] [blame]11847int val_hdr(struct arg *arg, char **err_msg)
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11848{
11849 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]11850 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11851 return 0;
11852 }
11853 return 1;
11854}
11855
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11856/* takes an UINT value on input supposed to represent the time since EPOCH,
11857 * adds an optional offset found in args[0] and emits a string representing
11858 * the date in RFC-1123/5322 format.
11859 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11860static int sample_conv_http_date(const struct arg *args, struct sample *smp, void *private)
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11861{
11862 const char day[7][4] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
11863 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
11864 struct chunk *temp;
11865 struct tm *tm;
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11866 /* With high numbers, the date returned can be negative, the 55 bits mask prevent this. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11867 time_t curr_date = smp->data.u.sint & 0x007fffffffffffffLL;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11868
11869 /* add offset */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]11870 if (args && (args[0].type == ARGT_SINT))
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11871 curr_date += args[0].data.sint;
11872
11873 tm = gmtime(&curr_date);
Thierry FOURNIERfac9ccf2015-07-08 00:15:20 +0200[diff] [blame]11874 if (!tm)
11875 return 0;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11876
11877 temp = get_trash_chunk();
11878 temp->len = snprintf(temp->str, temp->size - temp->len,
11879 "%s, %02d %s %04d %02d:%02d:%02d GMT",
11880 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
11881 tm->tm_hour, tm->tm_min, tm->tm_sec);
11882
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11883 smp->data.u.str = *temp;
Thierry FOURNIER8c542ca2015-08-19 09:00:18 +0200[diff] [blame]11884 smp->data.type = SMP_T_STR;
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11885 return 1;
11886}
11887
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11888/* Match language range with language tag. RFC2616 14.4:
11889 *
11890 * A language-range matches a language-tag if it exactly equals
11891 * the tag, or if it exactly equals a prefix of the tag such
11892 * that the first tag character following the prefix is "-".
11893 *
11894 * Return 1 if the strings match, else return 0.
11895 */
11896static inline int language_range_match(const char *range, int range_len,
11897 const char *tag, int tag_len)
11898{
11899 const char *end = range + range_len;
11900 const char *tend = tag + tag_len;
11901 while (range < end) {
11902 if (*range == '-' && tag == tend)
11903 return 1;
11904 if (*range != *tag || tag == tend)
11905 return 0;
11906 range++;
11907 tag++;
11908 }
11909 /* Return true only if the last char of the tag is matched. */
11910 return tag == tend;
11911}
11912
11913/* Arguments: The list of expected value, the number of parts returned and the separator */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11914static int sample_conv_q_prefered(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11915{
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11916 const char *al = smp->data.u.str.str;
11917 const char *end = al + smp->data.u.str.len;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11918 const char *token;
11919 int toklen;
11920 int qvalue;
11921 const char *str;
11922 const char *w;
11923 int best_q = 0;
11924
11925 /* Set the constant to the sample, because the output of the
11926 * function will be peek in the constant configuration string.
11927 */
11928 smp->flags |= SMP_F_CONST;
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]11929 smp->data.u.str.size = 0;
11930 smp->data.u.str.str = "";
11931 smp->data.u.str.len = 0;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11932
11933 /* Parse the accept language */
11934 while (1) {
11935
11936 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11937 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11938 al++;
11939 if (al >= end)
11940 break;
11941
11942 /* Start of the fisrt word. */
11943 token = al;
11944
11945 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11946 while (al < end && *al != ';' && *al != ',' && !isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11947 al++;
11948 if (al == token)
11949 goto expect_comma;
11950
11951 /* Length of the token. */
11952 toklen = al - token;
11953 qvalue = 1000;
11954
11955 /* Check if the token exists in the list. If the token not exists,
11956 * jump to the next token.
11957 */
11958 str = args[0].data.str.str;
11959 w = str;
11960 while (1) {
11961 if (*str == ';' || *str == '\0') {
11962 if (language_range_match(token, toklen, w, str-w))
11963 goto look_for_q;
11964 if (*str == '\0')
11965 goto expect_comma;
11966 w = str + 1;
11967 }
11968 str++;
11969 }
11970 goto expect_comma;
11971
11972look_for_q:
11973
11974 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11975 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11976 al++;
11977 if (al >= end)
11978 goto process_value;
11979
11980 /* If ',' is found, process the result */
11981 if (*al == ',')
11982 goto process_value;
11983
11984 /* If the character is different from ';', look
11985 * for the end of the header part in best effort.
11986 */
11987 if (*al != ';')
11988 goto expect_comma;
11989
11990 /* Assumes that the char is ';', now expect "q=". */
11991 al++;
11992
11993 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11994 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11995 al++;
11996 if (al >= end)
11997 goto process_value;
11998
11999 /* Expect 'q'. If no 'q', continue in best effort */
12000 if (*al != 'q')
12001 goto process_value;
12002 al++;
12003
12004 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12005 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12006 al++;
12007 if (al >= end)
12008 goto process_value;
12009
12010 /* Expect '='. If no '=', continue in best effort */
12011 if (*al != '=')
12012 goto process_value;
12013 al++;
12014
12015 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12016 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12017 al++;
12018 if (al >= end)
12019 goto process_value;
12020
12021 /* Parse the q value. */
12022 qvalue = parse_qvalue(al, &al);
12023
12024process_value:
12025
12026 /* If the new q value is the best q value, then store the associated
12027 * language in the response. If qvalue is the biggest value (1000),
12028 * break the process.
12029 */
12030 if (qvalue > best_q) {
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12031 smp->data.u.str.str = (char *)w;
12032 smp->data.u.str.len = str - w;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12033 if (qvalue >= 1000)
12034 break;
12035 best_q = qvalue;
12036 }
12037
12038expect_comma:
12039
12040 /* Expect comma or end. If the end is detected, quit the loop. */
12041 while (al < end && *al != ',')
12042 al++;
12043 if (al >= end)
12044 break;
12045
12046 /* Comma is found, jump it and restart the analyzer. */
12047 al++;
12048 }
12049
12050 /* Set default value if required. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12051 if (smp->data.u.str.len == 0 && args[1].type == ARGT_STR) {
12052 smp->data.u.str.str = args[1].data.str.str;
12053 smp->data.u.str.len = args[1].data.str.len;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12054 }
12055
12056 /* Return true only if a matching language was found. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12057 return smp->data.u.str.len != 0;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12058}
12059
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12060/* This fetch url-decode any input string. */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12061static int sample_conv_url_dec(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12062{
12063 /* If the constant flag is set or if not size is avalaible at
12064 * the end of the buffer, copy the string in other buffer
12065 * before decoding.
12066 */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12067 if (smp->flags & SMP_F_CONST || smp->data.u.str.size <= smp->data.u.str.len) {
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12068 struct chunk *str = get_trash_chunk();
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12069 memcpy(str->str, smp->data.u.str.str, smp->data.u.str.len);
12070 smp->data.u.str.str = str->str;
12071 smp->data.u.str.size = str->size;
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12072 smp->flags &= ~SMP_F_CONST;
12073 }
12074
12075 /* Add final \0 required by url_decode(), and convert the input string. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12076 smp->data.u.str.str[smp->data.u.str.len] = '\0';
12077 smp->data.u.str.len = url_decode(smp->data.u.str.str);
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12078 return 1;
12079}
12080
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12081static int smp_conv_req_capture(const struct arg *args, struct sample *smp, void *private)
12082{
12083 struct proxy *fe = strm_fe(smp->strm);
12084 int idx, i;
12085 struct cap_hdr *hdr;
12086 int len;
12087
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12088 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12089 return 0;
12090
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12091 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12092
12093 /* Check the availibity of the capture id. */
12094 if (idx > fe->nb_req_cap - 1)
12095 return 0;
12096
12097 /* Look for the original configuration. */
12098 for (hdr = fe->req_cap, i = fe->nb_req_cap - 1;
12099 hdr != NULL && i != idx ;
12100 i--, hdr = hdr->next);
12101 if (!hdr)
12102 return 0;
12103
12104 /* check for the memory allocation */
12105 if (smp->strm->req_cap[hdr->index] == NULL)
12106 smp->strm->req_cap[hdr->index] = pool_alloc2(hdr->pool);
12107 if (smp->strm->req_cap[hdr->index] == NULL)
12108 return 0;
12109
12110 /* Check length. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12111 len = smp->data.u.str.len;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12112 if (len > hdr->len)
12113 len = hdr->len;
12114
12115 /* Capture input data. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12116 memcpy(smp->strm->req_cap[idx], smp->data.u.str.str, len);
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12117 smp->strm->req_cap[idx][len] = '\0';
12118
12119 return 1;
12120}
12121
12122static int smp_conv_res_capture(const struct arg *args, struct sample *smp, void *private)
12123{
12124 struct proxy *fe = strm_fe(smp->strm);
12125 int idx, i;
12126 struct cap_hdr *hdr;
12127 int len;
12128
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12129 if (!args || args->type != ARGT_SINT)
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12130 return 0;
12131
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12132 idx = args->data.sint;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12133
12134 /* Check the availibity of the capture id. */
12135 if (idx > fe->nb_rsp_cap - 1)
12136 return 0;
12137
12138 /* Look for the original configuration. */
12139 for (hdr = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
12140 hdr != NULL && i != idx ;
12141 i--, hdr = hdr->next);
12142 if (!hdr)
12143 return 0;
12144
12145 /* check for the memory allocation */
12146 if (smp->strm->res_cap[hdr->index] == NULL)
12147 smp->strm->res_cap[hdr->index] = pool_alloc2(hdr->pool);
12148 if (smp->strm->res_cap[hdr->index] == NULL)
12149 return 0;
12150
12151 /* Check length. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12152 len = smp->data.u.str.len;
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12153 if (len > hdr->len)
12154 len = hdr->len;
12155
12156 /* Capture input data. */
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12157 memcpy(smp->strm->res_cap[idx], smp->data.u.str.str, len);
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12158 smp->strm->res_cap[idx][len] = '\0';
12159
12160 return 1;
12161}
12162
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12163/* This function executes one of the set-{method,path,query,uri} actions. It
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12164 * takes the string from the variable 'replace' with length 'len', then modifies
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12165 * the relevant part of the request line accordingly. Then it updates various
12166 * pointers to the next elements which were moved, and the total buffer length.
12167 * It finds the action to be performed in p[2], previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12168 * parse_set_req_line(). It returns 0 in case of success, -1 in case of internal
12169 * error, though this can be revisited when this code is finally exploited.
12170 *
12171 * 'action' can be '0' to replace method, '1' to replace path, '2' to replace
12172 * query string and 3 to replace uri.
12173 *
12174 * In query string case, the mark question '?' must be set at the start of the
12175 * string by the caller, event if the replacement query string is empty.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12176 */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12177int http_replace_req_line(int action, const char *replace, int len,
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12178 struct proxy *px, struct stream *s)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12179{
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12180 struct http_txn *txn = s->txn;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12181 char *cur_ptr, *cur_end;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12182 int offset = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12183 int delta;
12184
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12185 switch (action) {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12186 case 0: // method
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12187 cur_ptr = s->req.buf->p;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12188 cur_end = cur_ptr + txn->req.sl.rq.m_l;
12189
12190 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12191 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12192 txn->req.sl.rq.m_l += delta;
12193 txn->req.sl.rq.u += delta;
12194 txn->req.sl.rq.v += delta;
12195 break;
12196
12197 case 1: // path
12198 cur_ptr = http_get_path(txn);
12199 if (!cur_ptr)
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12200 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12201
12202 cur_end = cur_ptr;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12203 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]12204 cur_end++;
12205
12206 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12207 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12208 txn->req.sl.rq.u_l += delta;
12209 txn->req.sl.rq.v += delta;
12210 break;
12211
12212 case 2: // query
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12213 offset = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12214 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12215 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12216 while (cur_ptr < cur_end && *cur_ptr != '?')
12217 cur_ptr++;
12218
12219 /* skip the question mark or indicate that we must insert it
12220 * (but only if the format string is not empty then).
12221 */
12222 if (cur_ptr < cur_end)
12223 cur_ptr++;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12224 else if (len > 1)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12225 offset = 0;
12226
12227 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12228 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12229 txn->req.sl.rq.u_l += delta;
12230 txn->req.sl.rq.v += delta;
12231 break;
12232
12233 case 3: // uri
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12234 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12235 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12236
12237 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12238 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12239 txn->req.sl.rq.u_l += delta;
12240 txn->req.sl.rq.v += delta;
12241 break;
12242
12243 default:
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12244 return -1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12245 }
12246
12247 /* commit changes and adjust end of message */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12248 delta = buffer_replace2(s->req.buf, cur_ptr, cur_end, replace + offset, len - offset);
Thierry FOURNIER7f6192c2015-04-26 18:01:40 +0200[diff] [blame]12249 txn->req.sl.rq.l += delta;
12250 txn->hdr_idx.v[0].len += delta;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12251 http_msg_move_end(&txn->req, delta);
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12252 return 0;
12253}
12254
12255/* This function executes one of the set-{method,path,query,uri} actions. It
12256 * builds a string in the trash from the specified format string. It finds
12257 * the action to be performed in p[2], previously filled by function
12258 * parse_set_req_line(). The replacement action is excuted by the function
12259 * http_action_set_req_line_exec(). It always returns 1. If an error occurs
12260 * the action is canceled, but the rule processing continue.
12261 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame^]12262enum act_return http_action_set_req_line(struct act_rule *rule, struct proxy *px,
12263 struct session *sess, struct stream *s)
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12264{
12265 chunk_reset(&trash);
12266
12267 /* If we have to create a query string, prepare a '?'. */
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12268 if (rule->arg.http.action == 2)
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12269 trash.str[trash.len++] = '?';
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12270 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.http.logfmt);
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12271
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12272 http_replace_req_line(rule->arg.http.action, trash.str, trash.len, px, s);
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame^]12273 return ACT_RET_CONT;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12274}
12275
12276/* parse an http-request action among :
12277 * set-method
12278 * set-path
12279 * set-query
12280 * set-uri
12281 *
12282 * All of them accept a single argument of type string representing a log-format.
12283 * The resulting rule makes use of arg->act.p[0..1] to store the log-format list
12284 * head, and p[2] to store the action as an int (0=method, 1=path, 2=query, 3=uri).
12285 * It returns 0 on success, < 0 on error.
12286 */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]12287int parse_set_req_line(const char **args, int *orig_arg, struct proxy *px, struct act_rule *rule, char **err)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12288{
12289 int cur_arg = *orig_arg;
12290
Thierry FOURNIER91f6ba02015-08-06 08:30:11 +0200[diff] [blame]12291 rule->action = ACT_ACTION_CONT;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12292
12293 switch (args[0][4]) {
12294 case 'm' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12295 rule->arg.http.action = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12296 rule->action_ptr = http_action_set_req_line;
12297 break;
12298 case 'p' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12299 rule->arg.http.action = 1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12300 rule->action_ptr = http_action_set_req_line;
12301 break;
12302 case 'q' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12303 rule->arg.http.action = 2;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12304 rule->action_ptr = http_action_set_req_line;
12305 break;
12306 case 'u' :
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12307 rule->arg.http.action = 3;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12308 rule->action_ptr = http_action_set_req_line;
12309 break;
12310 default:
12311 memprintf(err, "internal error: unhandled action '%s'", args[0]);
12312 return -1;
12313 }
12314
12315 if (!*args[cur_arg] ||
12316 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
12317 memprintf(err, "expects exactly 1 argument <format>");
12318 return -1;
12319 }
12320
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12321 LIST_INIT(&rule->arg.http.logfmt);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12322 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIER8855a922015-07-31 08:54:25 +0200[diff] [blame]12323 parse_logformat_string(args[cur_arg], proxy, &rule->arg.http.logfmt, LOG_OPT_HTTP,
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12324 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
12325 proxy->conf.args.file, proxy->conf.args.line);
12326
12327 (*orig_arg)++;
12328 return 0;
12329}
12330
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12331/* This function executes the "capture" action. It executes a fetch expression,
12332 * turns the result into a string and puts it in a capture slot. It always
12333 * returns 1. If an error occurs the action is cancelled, but the rule
12334 * processing continues.
12335 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame^]12336enum act_return http_action_req_capture(struct act_rule *rule, struct proxy *px,
12337 struct session *sess, struct stream *s)
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12338{
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12339 struct sample *key;
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12340 struct cap_hdr *h = rule->arg.cap.hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12341 char **cap = s->req_cap;
12342 int len;
12343
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12344 key = sample_fetch_as_type(s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL, rule->arg.cap.expr, SMP_T_STR);
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12345 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame^]12346 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12347
12348 if (cap[h->index] == NULL)
12349 cap[h->index] = pool_alloc2(h->pool);
12350
12351 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame^]12352 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12353
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12354 len = key->data.u.str.len;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12355 if (len > h->len)
12356 len = h->len;
12357
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12358 memcpy(cap[h->index], key->data.u.str.str, len);
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12359 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame^]12360 return ACT_RET_CONT;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12361}
12362
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12363/* This function executes the "capture" action and store the result in a
12364 * capture slot if exists. It executes a fetch expression, turns the result
12365 * into a string and puts it in a capture slot. It always returns 1. If an
12366 * error occurs the action is cancelled, but the rule processing continues.
12367 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame^]12368enum act_return http_action_req_capture_by_id(struct act_rule *rule, struct proxy *px,
12369 struct session *sess, struct stream *s)
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12370{
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12371 struct sample *key;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12372 struct cap_hdr *h;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12373 char **cap = s->req_cap;
12374 struct proxy *fe = strm_fe(s);
12375 int len;
12376 int i;
12377
12378 /* Look for the original configuration. */
12379 for (h = fe->req_cap, i = fe->nb_req_cap - 1;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12380 h != NULL && i != rule->arg.capid.idx ;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12381 i--, h = h->next);
12382 if (!h)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame^]12383 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12384
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12385 key = sample_fetch_as_type(s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL, rule->arg.capid.expr, SMP_T_STR);
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12386 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame^]12387 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12388
12389 if (cap[h->index] == NULL)
12390 cap[h->index] = pool_alloc2(h->pool);
12391
12392 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame^]12393 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12394
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12395 len = key->data.u.str.len;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12396 if (len > h->len)
12397 len = h->len;
12398
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12399 memcpy(cap[h->index], key->data.u.str.str, len);
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12400 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame^]12401 return ACT_RET_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12402}
12403
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12404/* parse an "http-request capture" action. It takes a single argument which is
12405 * a sample fetch expression. It stores the expression into arg->act.p[0] and
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12406 * the allocated hdr_cap struct or the preallocated "id" into arg->act.p[1].
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12407 * It returns 0 on success, < 0 on error.
12408 */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]12409int parse_http_req_capture(const char **args, int *orig_arg, struct proxy *px, struct act_rule *rule, char **err)
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12410{
12411 struct sample_expr *expr;
12412 struct cap_hdr *hdr;
12413 int cur_arg;
Willy Tarreau3986ac12015-05-08 16:13:42 +0200[diff] [blame]12414 int len = 0;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12415
12416 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12417 if (strcmp(args[cur_arg], "if") == 0 ||
12418 strcmp(args[cur_arg], "unless") == 0)
12419 break;
12420
12421 if (cur_arg < *orig_arg + 3) {
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12422 memprintf(err, "expects <expression> [ 'len' <length> | id <idx> ]");
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12423 return -1;
12424 }
12425
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12426 cur_arg = *orig_arg;
12427 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12428 if (!expr)
12429 return -1;
12430
12431 if (!(expr->fetch->val & SMP_VAL_FE_HRQ_HDR)) {
12432 memprintf(err,
12433 "fetch method '%s' extracts information from '%s', none of which is available here",
12434 args[cur_arg-1], sample_src_names(expr->fetch->use));
12435 free(expr);
12436 return -1;
12437 }
12438
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12439 if (!args[cur_arg] || !*args[cur_arg]) {
12440 memprintf(err, "expects 'len or 'id'");
12441 free(expr);
12442 return -1;
12443 }
12444
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12445 if (strcmp(args[cur_arg], "len") == 0) {
12446 cur_arg++;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12447
12448 if (!(px->cap & PR_CAP_FE)) {
12449 memprintf(err, "proxy '%s' has no frontend capability", px->id);
12450 return -1;
12451 }
12452
12453 proxy->conf.args.ctx = ARGC_CAP;
12454
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12455 if (!args[cur_arg]) {
12456 memprintf(err, "missing length value");
12457 free(expr);
12458 return -1;
12459 }
12460 /* we copy the table name for now, it will be resolved later */
12461 len = atoi(args[cur_arg]);
12462 if (len <= 0) {
12463 memprintf(err, "length must be > 0");
12464 free(expr);
12465 return -1;
12466 }
12467 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12468
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12469 if (!len) {
12470 memprintf(err, "a positive 'len' argument is mandatory");
12471 free(expr);
12472 return -1;
12473 }
12474
12475 hdr = calloc(sizeof(struct cap_hdr), 1);
12476 hdr->next = px->req_cap;
12477 hdr->name = NULL; /* not a header capture */
12478 hdr->namelen = 0;
12479 hdr->len = len;
12480 hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
12481 hdr->index = px->nb_req_cap++;
12482
12483 px->req_cap = hdr;
12484 px->to_log |= LW_REQHDR;
12485
Thierry FOURNIER91f6ba02015-08-06 08:30:11 +0200[diff] [blame]12486 rule->action = ACT_ACTION_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12487 rule->action_ptr = http_action_req_capture;
Thierry FOURNIER32b15002015-07-31 08:56:16 +0200[diff] [blame]12488 rule->arg.cap.expr = expr;
12489 rule->arg.cap.hdr = hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12490 }
12491
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12492 else if (strcmp(args[cur_arg], "id") == 0) {
12493 int id;
12494 char *error;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12495
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12496 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12497
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12498 if (!args[cur_arg]) {
12499 memprintf(err, "missing id value");
12500 free(expr);
12501 return -1;
12502 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12503
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12504 id = strtol(args[cur_arg], &error, 10);
12505 if (*error != '\0') {
12506 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12507 free(expr);
12508 return -1;
12509 }
12510 cur_arg++;
12511
12512 proxy->conf.args.ctx = ARGC_CAP;
12513
Thierry FOURNIER91f6ba02015-08-06 08:30:11 +0200[diff] [blame]12514 rule->action = ACT_ACTION_CONT;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12515 rule->action_ptr = http_action_req_capture_by_id;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12516 rule->arg.capid.expr = expr;
12517 rule->arg.capid.idx = id;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12518 }
12519
12520 else {
12521 memprintf(err, "expects 'len' or 'id', found '%s'", args[cur_arg]);
12522 free(expr);
12523 return -1;
12524 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12525
12526 *orig_arg = cur_arg;
12527 return 0;
12528}
12529
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12530/* This function executes the "capture" action and store the result in a
12531 * capture slot if exists. It executes a fetch expression, turns the result
12532 * into a string and puts it in a capture slot. It always returns 1. If an
12533 * error occurs the action is cancelled, but the rule processing continues.
12534 */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame^]12535enum act_return http_action_res_capture_by_id(struct act_rule *rule, struct proxy *px,
12536 struct session *sess, struct stream *s)
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12537{
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12538 struct sample *key;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12539 struct cap_hdr *h;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12540 char **cap = s->res_cap;
12541 struct proxy *fe = strm_fe(s);
12542 int len;
12543 int i;
12544
12545 /* Look for the original configuration. */
12546 for (h = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12547 h != NULL && i != rule->arg.capid.idx ;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12548 i--, h = h->next);
12549 if (!h)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame^]12550 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12551
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12552 key = sample_fetch_as_type(s->be, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL, rule->arg.capid.expr, SMP_T_STR);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12553 if (!key)
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame^]12554 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12555
12556 if (cap[h->index] == NULL)
12557 cap[h->index] = pool_alloc2(h->pool);
12558
12559 if (cap[h->index] == NULL) /* no more capture memory */
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame^]12560 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12561
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12562 len = key->data.u.str.len;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12563 if (len > h->len)
12564 len = h->len;
12565
Thierry FOURNIER136f9d32015-08-19 09:07:19 +0200[diff] [blame]12566 memcpy(cap[h->index], key->data.u.str.str, len);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12567 cap[h->index][len] = 0;
Thierry FOURNIER24ff6c62015-08-06 08:52:53 +0200[diff] [blame^]12568 return ACT_RET_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12569}
12570
12571/* parse an "http-response capture" action. It takes a single argument which is
12572 * a sample fetch expression. It stores the expression into arg->act.p[0] and
12573 * the allocated hdr_cap struct od the preallocated id into arg->act.p[1].
12574 * It returns 0 on success, < 0 on error.
12575 */
Thierry FOURNIERa28a9422015-08-04 19:35:46 +0200[diff] [blame]12576int parse_http_res_capture(const char **args, int *orig_arg, struct proxy *px, struct act_rule *rule, char **err)
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12577{
12578 struct sample_expr *expr;
12579 int cur_arg;
12580 int id;
12581 char *error;
12582
12583 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12584 if (strcmp(args[cur_arg], "if") == 0 ||
12585 strcmp(args[cur_arg], "unless") == 0)
12586 break;
12587
12588 if (cur_arg < *orig_arg + 3) {
12589 memprintf(err, "expects <expression> [ 'len' <length> | id <idx> ]");
12590 return -1;
12591 }
12592
12593 cur_arg = *orig_arg;
12594 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12595 if (!expr)
12596 return -1;
12597
12598 if (!(expr->fetch->val & SMP_VAL_FE_HRS_HDR)) {
12599 memprintf(err,
12600 "fetch method '%s' extracts information from '%s', none of which is available here",
12601 args[cur_arg-1], sample_src_names(expr->fetch->use));
12602 free(expr);
12603 return -1;
12604 }
12605
12606 if (!args[cur_arg] || !*args[cur_arg]) {
12607 memprintf(err, "expects 'len or 'id'");
12608 free(expr);
12609 return -1;
12610 }
12611
12612 if (strcmp(args[cur_arg], "id") != 0) {
12613 memprintf(err, "expects 'id', found '%s'", args[cur_arg]);
12614 free(expr);
12615 return -1;
12616 }
12617
12618 cur_arg++;
12619
12620 if (!args[cur_arg]) {
12621 memprintf(err, "missing id value");
12622 free(expr);
12623 return -1;
12624 }
12625
12626 id = strtol(args[cur_arg], &error, 10);
12627 if (*error != '\0') {
12628 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12629 free(expr);
12630 return -1;
12631 }
12632 cur_arg++;
12633
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12634 proxy->conf.args.ctx = ARGC_CAP;
12635
Thierry FOURNIER91f6ba02015-08-06 08:30:11 +0200[diff] [blame]12636 rule->action = ACT_ACTION_CONT;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12637 rule->action_ptr = http_action_res_capture_by_id;
Thierry FOURNIERe2097972015-07-31 08:56:35 +0200[diff] [blame]12638 rule->arg.capid.expr = expr;
12639 rule->arg.capid.idx = id;
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12640
12641 *orig_arg = cur_arg;
12642 return 0;
12643}
12644
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12645/*
12646 * Return the struct http_req_action_kw associated to a keyword.
12647 */
12648struct http_req_action_kw *action_http_req_custom(const char *kw)
12649{
12650 if (!LIST_ISEMPTY(&http_req_keywords.list)) {
12651 struct http_req_action_kw_list *kw_list;
12652 int i;
12653
12654 list_for_each_entry(kw_list, &http_req_keywords.list, list) {
12655 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
Thierry FOURNIER0e118632015-06-04 11:44:06 +0200[diff] [blame]12656 if (kw_list->kw[i].match_pfx &&
12657 strncmp(kw, kw_list->kw[i].kw, strlen(kw_list->kw[i].kw)) == 0)
12658 return &kw_list->kw[i];
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12659 if (!strcmp(kw, kw_list->kw[i].kw))
12660 return &kw_list->kw[i];
12661 }
12662 }
12663 }
12664 return NULL;
12665}
12666
12667/*
12668 * Return the struct http_res_action_kw associated to a keyword.
12669 */
12670struct http_res_action_kw *action_http_res_custom(const char *kw)
12671{
12672 if (!LIST_ISEMPTY(&http_res_keywords.list)) {
12673 struct http_res_action_kw_list *kw_list;
12674 int i;
12675
12676 list_for_each_entry(kw_list, &http_res_keywords.list, list) {
12677 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
Thierry FOURNIER0e118632015-06-04 11:44:06 +0200[diff] [blame]12678 if (kw_list->kw[i].match_pfx &&
12679 strncmp(kw, kw_list->kw[i].kw, strlen(kw_list->kw[i].kw)) == 0)
12680 return &kw_list->kw[i];
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12681 if (!strcmp(kw, kw_list->kw[i].kw))
12682 return &kw_list->kw[i];
12683 }
12684 }
12685 }
12686 return NULL;
12687}
12688
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12689/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12690/* All supported ACL keywords must be declared here. */
12691/************************************************************************/
12692
12693/* Note: must not be declared <const> as its list will be overwritten.
12694 * Please take care of keeping this list alphabetically sorted.
12695 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]12696static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12697 { "base", "base", PAT_MATCH_STR },
12698 { "base_beg", "base", PAT_MATCH_BEG },
12699 { "base_dir", "base", PAT_MATCH_DIR },
12700 { "base_dom", "base", PAT_MATCH_DOM },
12701 { "base_end", "base", PAT_MATCH_END },
12702 { "base_len", "base", PAT_MATCH_LEN },
12703 { "base_reg", "base", PAT_MATCH_REG },
12704 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]12705
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12706 { "cook", "req.cook", PAT_MATCH_STR },
12707 { "cook_beg", "req.cook", PAT_MATCH_BEG },
12708 { "cook_dir", "req.cook", PAT_MATCH_DIR },
12709 { "cook_dom", "req.cook", PAT_MATCH_DOM },
12710 { "cook_end", "req.cook", PAT_MATCH_END },
12711 { "cook_len", "req.cook", PAT_MATCH_LEN },
12712 { "cook_reg", "req.cook", PAT_MATCH_REG },
12713 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12714
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12715 { "hdr", "req.hdr", PAT_MATCH_STR },
12716 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
12717 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
12718 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
12719 { "hdr_end", "req.hdr", PAT_MATCH_END },
12720 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
12721 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
12722 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12723
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12724 /* these two declarations uses strings with list storage (in place
12725 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
12726 * and delete functions are relative to the list management. The parse
12727 * and match method are related to the corresponding fetch methods. This
12728 * is very particular ACL declaration mode.
12729 */
12730 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
12731 { "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]12732
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12733 { "path", "path", PAT_MATCH_STR },
12734 { "path_beg", "path", PAT_MATCH_BEG },
12735 { "path_dir", "path", PAT_MATCH_DIR },
12736 { "path_dom", "path", PAT_MATCH_DOM },
12737 { "path_end", "path", PAT_MATCH_END },
12738 { "path_len", "path", PAT_MATCH_LEN },
12739 { "path_reg", "path", PAT_MATCH_REG },
12740 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12741
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12742 { "req_ver", "req.ver", PAT_MATCH_STR },
12743 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12744
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12745 { "scook", "res.cook", PAT_MATCH_STR },
12746 { "scook_beg", "res.cook", PAT_MATCH_BEG },
12747 { "scook_dir", "res.cook", PAT_MATCH_DIR },
12748 { "scook_dom", "res.cook", PAT_MATCH_DOM },
12749 { "scook_end", "res.cook", PAT_MATCH_END },
12750 { "scook_len", "res.cook", PAT_MATCH_LEN },
12751 { "scook_reg", "res.cook", PAT_MATCH_REG },
12752 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12753
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12754 { "shdr", "res.hdr", PAT_MATCH_STR },
12755 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
12756 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
12757 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
12758 { "shdr_end", "res.hdr", PAT_MATCH_END },
12759 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
12760 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
12761 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12762
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12763 { "url", "url", PAT_MATCH_STR },
12764 { "url_beg", "url", PAT_MATCH_BEG },
12765 { "url_dir", "url", PAT_MATCH_DIR },
12766 { "url_dom", "url", PAT_MATCH_DOM },
12767 { "url_end", "url", PAT_MATCH_END },
12768 { "url_len", "url", PAT_MATCH_LEN },
12769 { "url_reg", "url", PAT_MATCH_REG },
12770 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12771
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12772 { "urlp", "urlp", PAT_MATCH_STR },
12773 { "urlp_beg", "urlp", PAT_MATCH_BEG },
12774 { "urlp_dir", "urlp", PAT_MATCH_DIR },
12775 { "urlp_dom", "urlp", PAT_MATCH_DOM },
12776 { "urlp_end", "urlp", PAT_MATCH_END },
12777 { "urlp_len", "urlp", PAT_MATCH_LEN },
12778 { "urlp_reg", "urlp", PAT_MATCH_REG },
12779 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12780
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]12781 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12782}};
12783
12784/************************************************************************/
12785/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12786/************************************************************************/
12787/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]12788static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12789 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12790 { "base32", smp_fetch_base32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12791 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
12792
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]12793 /* capture are allocated and are permanent in the stream */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12794 { "capture.req.hdr", smp_fetch_capture_header_req, ARG1(1,SINT), NULL, SMP_T_STR, SMP_USE_HRQHP },
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]12795
12796 /* retrieve these captures from the HTTP logs */
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12797 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12798 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12799 { "capture.req.ver", smp_fetch_capture_req_ver, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]12800
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12801 { "capture.res.hdr", smp_fetch_capture_header_res, ARG1(1,SINT), NULL, SMP_T_STR, SMP_USE_HRSHP },
12802 { "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]12803
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12804 /* cookie is valid in both directions (eg: for "stick ...") but cook*
12805 * are only here to match the ACL's name, are request-only and are used
12806 * for ACL compatibility only.
12807 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12808 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
12809 { "cookie", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV|SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12810 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
12811 { "cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12812
12813 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
12814 * only here to match the ACL's name, are request-only and are used for
12815 * ACL compatibility only.
12816 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12817 { "hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRQHV|SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12818 { "hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12819 { "hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12820 { "hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12821
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]12822 { "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]12823 { "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]12824 { "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]12825 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12826 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]12827 { "query", smp_fetch_query, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12828
12829 /* HTTP protocol on the request path */
12830 { "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]12831 { "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]12832
12833 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12834 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
12835 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12836
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]12837 { "req.body", smp_fetch_body, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12838 { "req.body_len", smp_fetch_body_len, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
12839 { "req.body_size", smp_fetch_body_size, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]12840 { "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]12841
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12842 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12843 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
12844 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12845
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12846 /* 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]12847 { "req.cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12848 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
12849 { "req.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12850
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12851 { "req.fhdr", smp_fetch_fhdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12852 { "req.fhdr_cnt", smp_fetch_fhdr_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12853 { "req.hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12854 { "req.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12855 { "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]12856 { "req.hdr_names", smp_fetch_hdr_names, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12857 { "req.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12858
12859 /* 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]12860 { "res.cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12861 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
12862 { "res.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12863
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12864 { "res.fhdr", smp_fetch_fhdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12865 { "res.fhdr_cnt", smp_fetch_fhdr_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12866 { "res.hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12867 { "res.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12868 { "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]12869 { "res.hdr_names", smp_fetch_hdr_names, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12870 { "res.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_SINT, SMP_USE_HRSHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12871
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12872 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12873 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12874 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
12875 { "scook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12876 { "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]12877
12878 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12879 { "shdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12880 { "shdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_SINT, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12881 { "shdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12882 { "shdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_SINT, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12883
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12884 { "status", smp_fetch_stcode, 0, NULL, SMP_T_SINT, SMP_USE_HRSHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12885 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12886 { "url32", smp_fetch_url32, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12887 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12888 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12889 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]12890 { "url_param", smp_fetch_url_param, ARG2(0,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
12891 { "urlp" , smp_fetch_url_param, ARG2(0,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12892 { "urlp_val", smp_fetch_url_param_val, ARG2(0,STR,STR), NULL, SMP_T_SINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12893 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12894}};
12895
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12896
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12897/************************************************************************/
12898/* All supported converter keywords must be declared here. */
12899/************************************************************************/
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12900/* Note: must not be declared <const> as its list will be overwritten */
12901static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIER07ee64e2015-07-06 23:43:03 +0200[diff] [blame]12902 { "http_date", sample_conv_http_date, ARG1(0,SINT), NULL, SMP_T_SINT, SMP_T_STR},
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12903 { "language", sample_conv_q_prefered, ARG2(1,STR,STR), NULL, SMP_T_STR, SMP_T_STR},
Thierry FOURNIERbf65cd42015-07-20 17:45:02 +0200[diff] [blame]12904 { "capture-req", smp_conv_req_capture, ARG1(1,SINT), NULL, SMP_T_STR, SMP_T_STR},
12905 { "capture-res", smp_conv_res_capture, ARG1(1,SINT), NULL, SMP_T_STR, SMP_T_STR},
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12906 { "url_dec", sample_conv_url_dec, 0, NULL, SMP_T_STR, SMP_T_STR},
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12907 { NULL, NULL, 0, 0, 0 },
12908}};
12909
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12910
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12911/************************************************************************/
12912/* All supported http-request action keywords must be declared here. */
12913/************************************************************************/
12914struct http_req_action_kw_list http_req_actions = {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12915 .kw = {
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12916 { "capture", parse_http_req_capture },
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12917 { "set-method", parse_set_req_line },
12918 { "set-path", parse_set_req_line },
12919 { "set-query", parse_set_req_line },
12920 { "set-uri", parse_set_req_line },
Willy Tarreaucb703b02015-04-03 09:52:01 +0200[diff] [blame]12921 { NULL, NULL }
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12922 }
12923};
12924
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12925struct http_res_action_kw_list http_res_actions = {
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12926 .kw = {
12927 { "capture", parse_http_res_capture },
12928 { NULL, NULL }
12929 }
12930};
12931
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12932__attribute__((constructor))
12933static void __http_protocol_init(void)
12934{
12935 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]12936 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12937 sample_register_convs(&sample_conv_kws);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12938 http_req_keywords_register(&http_req_actions);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12939 http_res_keywords_register(&http_res_actions);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12940}
12941
12942
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]12943/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]12944 * Local variables:
12945 * c-indent-level: 8
12946 * c-basic-offset: 8
12947 * End:
12948 */