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git01.mediatek.com / haproxy / 748179eb5a15a09d6295993ccb998da2331c9667 / . / src / proto_http.c
blob: dc599815af10cc20342290debe936edf51bf77d4 [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1/*
2 * HTTP protocol analyzer
3 *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4 * Copyright 2000-2011 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <ctype.h>
14#include <errno.h>
15#include <fcntl.h>
16#include <stdio.h>
17#include <stdlib.h>
18#include <string.h>
19#include <syslog.h>
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]20#include <time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]21
22#include <sys/socket.h>
23#include <sys/stat.h>
24#include <sys/types.h>
25
Willy Tarreaub05405a2012-01-23 15:35:52 +0100[diff] [blame]26#include <netinet/tcp.h>
27
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]28#include <common/appsession.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]29#include <common/base64.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]30#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]31#include <common/compat.h>
32#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +0100[diff] [blame]33#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]34#include <common/memory.h>
35#include <common/mini-clist.h>
36#include <common/standard.h>
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]37#include <common/ticks.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]38#include <common/time.h>
39#include <common/uri_auth.h>
40#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]41
42#include <types/capture.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]43#include <types/global.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]44
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]45#include <proto/acl.h>
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]46#include <proto/arg.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]47#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]48#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]49#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]50#include <proto/checks.h>
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]51#include <proto/compression.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]52#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]53#include <proto/fd.h>
Willy Tarreau03fa5df2010-05-24 21:02:37 +0200[diff] [blame]54#include <proto/frontend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]55#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]56#include <proto/hdr_idx.h>
Thierry FOURNIERed66c292013-11-28 11:05:19 +0100[diff] [blame]57#include <proto/pattern.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]58#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]59#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]60#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]61#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]62#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]63#include <proto/server.h>
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]64#include <proto/stream.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]65#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]66#include <proto/task.h>
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]67#include <proto/pattern.h>
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 Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3136 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3137 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3138 req->analyse_exp = TICK_ETERNITY;
3139 return 1;
3140
3141 return_bad_req:
3142 /* We centralize bad requests processing here */
3143 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3144 /* we detected a parsing error. We want to archive this request
3145 * in the dedicated proxy area for later troubleshooting.
3146 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3147 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]3148 }
3149
3150 txn->req.msg_state = HTTP_MSG_ERROR;
3151 txn->status = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]3152 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3153
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3154 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]3155 if (sess->listener->counters)
3156 sess->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3157
3158 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]3159 if (!(s->flags & SF_ERR_MASK))
3160 s->flags |= SF_ERR_PRXCOND;
3161 if (!(s->flags & SF_FINST_MASK))
3162 s->flags |= SF_FINST_R;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3163
3164 req->analysers = 0;
3165 req->analyse_exp = TICK_ETERNITY;
3166 return 0;
3167}
3168
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]3169
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3170/* This function prepares an applet to handle the stats. It can deal with the
3171 * "100-continue" expectation, check that admin rules are met for POST requests,
3172 * and program a response message if something was unexpected. It cannot fail
3173 * 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]3174 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3175 * s->target which is supposed to already point to the stats applet. The caller
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3176 * is expected to have already assigned an appctx to the stream.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3177 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3178int http_handle_stats(struct stream *s, struct channel *req)
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3179{
3180 struct stats_admin_rule *stats_admin_rule;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]3181 struct stream_interface *si = &s->si[1];
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3182 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3183 struct http_txn *txn = s->txn;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3184 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3185 struct uri_auth *uri_auth = s->be->uri_auth;
3186 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3187 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3188
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3189 appctx = si_appctx(si);
3190 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
3191 appctx->st1 = appctx->st2 = 0;
3192 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
3193 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3194 if ((msg->flags & HTTP_MSGF_VER_11) && (s->txn->meth != HTTP_METH_HEAD))
Willy Tarreauaf3cf702014-04-22 22:19:53 +0200[diff] [blame]3195 appctx->ctx.stats.flags |= STAT_CHUNKED;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3196
3197 uri = msg->chn->buf->p + msg->sl.rq.u;
3198 lookup = uri + uri_auth->uri_len;
3199
3200 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
3201 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3202 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3203 break;
3204 }
3205 }
3206
3207 if (uri_auth->refresh) {
3208 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
3209 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3210 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3211 break;
3212 }
3213 }
3214 }
3215
3216 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
3217 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3218 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3219 break;
3220 }
3221 }
3222
3223 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3224 if (memcmp(h, ";st=", 4) == 0) {
3225 int i;
3226 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3227 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3228 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
3229 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3230 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3231 break;
3232 }
3233 }
3234 break;
3235 }
3236 }
3237
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3238 appctx->ctx.stats.scope_str = 0;
3239 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3240 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3241 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
3242 int itx = 0;
3243 const char *h2;
3244 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
3245 const char *err;
3246
3247 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
3248 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3249 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3250 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
3251 itx++;
3252 h++;
3253 }
3254
3255 if (itx > STAT_SCOPE_TXT_MAXLEN)
3256 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3257 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3258
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3259 /* 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]3260 memcpy(scope_txt, h2, itx);
3261 scope_txt[itx] = '\0';
3262 err = invalid_char(scope_txt);
3263 if (err) {
3264 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3265 appctx->ctx.stats.scope_str = 0;
3266 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3267 }
3268 break;
3269 }
3270 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3271
3272 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3273 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3274 int ret = 1;
3275
3276 if (stats_admin_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3277 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]3278 ret = acl_pass(ret);
3279 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3280 ret = !ret;
3281 }
3282
3283 if (ret) {
3284 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3285 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3286 break;
3287 }
3288 }
3289
3290 /* Was the status page requested with a POST ? */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3291 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3292 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreaucfe7fdd2014-04-26 22:08:32 +0200[diff] [blame]3293 /* we'll need the request body, possibly after sending 100-continue */
3294 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3295 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3296 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3297 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3298 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
3299 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]3300 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3301 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3302 else {
3303 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3304 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3305 }
3306
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3307 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3308 return 1;
3309}
3310
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3311/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
3312 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
3313 */
Thierry FOURNIER7fe75e02015-03-16 12:03:44 +0100[diff] [blame]3314void inet_set_tos(int fd, struct sockaddr_storage from, int tos)
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3315{
3316#ifdef IP_TOS
3317 if (from.ss_family == AF_INET)
3318 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3319#endif
3320#ifdef IPV6_TCLASS
3321 if (from.ss_family == AF_INET6) {
3322 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)&from)->sin6_addr))
3323 /* v4-mapped addresses need IP_TOS */
3324 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3325 else
3326 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
3327 }
3328#endif
3329}
3330
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3331int http_transform_header_str(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3332 const char* name, unsigned int name_len,
3333 const char *str, struct my_regex *re,
3334 int action)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3335{
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3336 struct hdr_ctx ctx;
3337 char *buf = msg->chn->buf->p;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3338 struct hdr_idx *idx = &s->txn->hdr_idx;
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3339 int (*http_find_hdr_func)(const char *name, int len, char *sol,
3340 struct hdr_idx *idx, struct hdr_ctx *ctx);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3341 struct chunk *output = get_trash_chunk();
3342
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3343 ctx.idx = 0;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3344
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3345 /* Choose the header browsing function. */
3346 switch (action) {
3347 case HTTP_REQ_ACT_REPLACE_VAL:
3348 case HTTP_RES_ACT_REPLACE_VAL:
3349 http_find_hdr_func = http_find_header2;
3350 break;
3351 case HTTP_REQ_ACT_REPLACE_HDR:
3352 case HTTP_RES_ACT_REPLACE_HDR:
3353 http_find_hdr_func = http_find_full_header2;
3354 break;
3355 default: /* impossible */
3356 return -1;
3357 }
3358
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3359 while (http_find_hdr_func(name, name_len, buf, idx, &ctx)) {
3360 struct hdr_idx_elem *hdr = idx->v + ctx.idx;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3361 int delta;
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3362 char *val = ctx.line + ctx.val;
3363 char* val_end = val + ctx.vlen;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3364
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3365 if (!regex_exec_match2(re, val, val_end-val, MAX_MATCH, pmatch, 0))
3366 continue;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3367
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3368 output->len = exp_replace(output->str, output->size, val, str, pmatch);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3369 if (output->len == -1)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3370 return -1;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3371
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3372 delta = buffer_replace2(msg->chn->buf, val, val_end, output->str, output->len);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3373
3374 hdr->len += delta;
3375 http_msg_move_end(msg, delta);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3376
3377 /* Adjust the length of the current value of the index. */
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3378 ctx.vlen += delta;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3379 }
3380
3381 return 0;
3382}
3383
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3384static int http_transform_header(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3385 const char* name, unsigned int name_len,
3386 struct list *fmt, struct my_regex *re,
3387 int action)
3388{
3389 struct chunk *replace = get_trash_chunk();
3390
3391 replace->len = build_logline(s, replace->str, replace->size, fmt);
3392 if (replace->len >= replace->size - 1)
3393 return -1;
3394
3395 return http_transform_header_str(s, msg, name, name_len, replace->str, re, action);
3396}
3397
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3398/* Executes the http-request rules <rules> for stream <s>, proxy <px> and
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3399 * transaction <txn>. Returns the verdict of the first rule that prevents
3400 * further processing of the request (auth, deny, ...), and defaults to
3401 * HTTP_RULE_RES_STOP if it executed all rules or stopped on an allow, or
3402 * HTTP_RULE_RES_CONT if the last rule was reached. It may set the TX_CLTARPIT
3403 * on txn->flags if it encounters a tarpit rule.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3404 */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3405enum rule_result
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3406http_req_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3407{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3408 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3409 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3410 struct connection *cli_conn;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3411 struct http_req_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3412 struct hdr_ctx ctx;
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3413 const char *auth_realm;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3414
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3415 /* If "the current_rule_list" match the executed rule list, we are in
3416 * resume condition. If a resume is needed it is always in the action
3417 * and never in the ACL or converters. In this case, we initialise the
3418 * current rule, and go to the action execution point.
3419 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3420 if (s->current_rule) {
3421 rule = s->current_rule;
3422 s->current_rule = NULL;
3423 if (s->current_rule_list == rules)
3424 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3425 }
3426 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3427
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3428 list_for_each_entry(rule, rules, list) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3429 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3430 continue;
3431
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3432 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3433 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3434 int ret;
3435
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3436 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]3437 ret = acl_pass(ret);
3438
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3439 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3440 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3441
3442 if (!ret) /* condition not matched */
3443 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3444 }
3445
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3446resume_execution:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3447 switch (rule->action) {
3448 case HTTP_REQ_ACT_ALLOW:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3449 return HTTP_RULE_RES_STOP;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3450
3451 case HTTP_REQ_ACT_DENY:
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]3452 txn->rule_deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3453 return HTTP_RULE_RES_DENY;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3454
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3455 case HTTP_REQ_ACT_TARPIT:
3456 txn->flags |= TX_CLTARPIT;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]3457 txn->rule_deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3458 return HTTP_RULE_RES_DENY;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3459
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3460 case HTTP_REQ_ACT_AUTH:
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3461 /* Auth might be performed on regular http-req rules as well as on stats */
3462 auth_realm = rule->arg.auth.realm;
3463 if (!auth_realm) {
3464 if (px->uri_auth && rules == &px->uri_auth->http_req_rules)
3465 auth_realm = STATS_DEFAULT_REALM;
3466 else
3467 auth_realm = px->id;
3468 }
3469 /* send 401/407 depending on whether we use a proxy or not. We still
3470 * count one error, because normal browsing won't significantly
3471 * increase the counter but brute force attempts will.
3472 */
3473 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, auth_realm);
3474 txn->status = (txn->flags & TX_USE_PX_CONN) ? 407 : 401;
3475 stream_int_retnclose(&s->si[0], &trash);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3476 stream_inc_http_err_ctr(s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3477 return HTTP_RULE_RES_ABRT;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3478
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3479 case HTTP_REQ_ACT_REDIR:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3480 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3481 return HTTP_RULE_RES_BADREQ;
3482 return HTTP_RULE_RES_DONE;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3483
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3484 case HTTP_REQ_ACT_SET_NICE:
3485 s->task->nice = rule->arg.nice;
3486 break;
3487
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3488 case HTTP_REQ_ACT_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3489 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3490 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]3491 break;
3492
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3493 case HTTP_REQ_ACT_SET_MARK:
3494#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3495 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3496 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]3497#endif
3498 break;
3499
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3500 case HTTP_REQ_ACT_SET_LOGL:
3501 s->logs.level = rule->arg.loglevel;
3502 break;
3503
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3504 case HTTP_REQ_ACT_REPLACE_HDR:
3505 case HTTP_REQ_ACT_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3506 if (http_transform_header(s, &txn->req, rule->arg.hdr_add.name,
3507 rule->arg.hdr_add.name_len,
3508 &rule->arg.hdr_add.fmt,
3509 &rule->arg.hdr_add.re, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3510 return HTTP_RULE_RES_BADREQ;
3511 break;
3512
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3513 case HTTP_REQ_ACT_DEL_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3514 ctx.idx = 0;
3515 /* remove all occurrences of the header */
3516 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3517 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3518 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3519 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3520 break;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3521
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3522 case HTTP_REQ_ACT_SET_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3523 case HTTP_REQ_ACT_ADD_HDR:
3524 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3525 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3526 trash.len = rule->arg.hdr_add.name_len;
3527 trash.str[trash.len++] = ':';
3528 trash.str[trash.len++] = ' ';
3529 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]3530
3531 if (rule->action == HTTP_REQ_ACT_SET_HDR) {
3532 /* remove all occurrences of the header */
3533 ctx.idx = 0;
3534 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3535 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3536 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
3537 }
3538 }
3539
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3540 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3541 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3542
3543 case HTTP_REQ_ACT_DEL_ACL:
3544 case HTTP_REQ_ACT_DEL_MAP: {
3545 struct pat_ref *ref;
3546 char *key;
3547 int len;
3548
3549 /* collect reference */
3550 ref = pat_ref_lookup(rule->arg.map.ref);
3551 if (!ref)
3552 continue;
3553
3554 /* collect key */
3555 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3556 key = trash.str;
3557 key[len] = '\0';
3558
3559 /* perform update */
3560 /* returned code: 1=ok, 0=ko */
3561 pat_ref_delete(ref, key);
3562
3563 break;
3564 }
3565
3566 case HTTP_REQ_ACT_ADD_ACL: {
3567 struct pat_ref *ref;
3568 char *key;
3569 struct chunk *trash_key;
3570 int len;
3571
3572 trash_key = get_trash_chunk();
3573
3574 /* collect reference */
3575 ref = pat_ref_lookup(rule->arg.map.ref);
3576 if (!ref)
3577 continue;
3578
3579 /* collect key */
3580 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3581 key = trash_key->str;
3582 key[len] = '\0';
3583
3584 /* perform update */
3585 /* add entry only if it does not already exist */
3586 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3587 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3588
3589 break;
3590 }
3591
3592 case HTTP_REQ_ACT_SET_MAP: {
3593 struct pat_ref *ref;
3594 char *key, *value;
3595 struct chunk *trash_key, *trash_value;
3596 int len;
3597
3598 trash_key = get_trash_chunk();
3599 trash_value = get_trash_chunk();
3600
3601 /* collect reference */
3602 ref = pat_ref_lookup(rule->arg.map.ref);
3603 if (!ref)
3604 continue;
3605
3606 /* collect key */
3607 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3608 key = trash_key->str;
3609 key[len] = '\0';
3610
3611 /* collect value */
3612 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3613 value = trash_value->str;
3614 value[len] = '\0';
3615
3616 /* perform update */
3617 if (pat_ref_find_elt(ref, key) != NULL)
3618 /* update entry if it exists */
3619 pat_ref_set(ref, key, value, NULL);
3620 else
3621 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3622 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3623
3624 break;
3625 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3626
3627 case HTTP_REQ_ACT_CUSTOM_CONT:
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3628 if (!rule->action_ptr(rule, px, s)) {
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3629 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3630 return HTTP_RULE_RES_YIELD;
3631 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3632 break;
3633
3634 case HTTP_REQ_ACT_CUSTOM_STOP:
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3635 rule->action_ptr(rule, px, s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3636 return HTTP_RULE_RES_DONE;
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3637
3638 case HTTP_REQ_ACT_TRK_SC0 ... HTTP_REQ_ACT_TRK_SCMAX:
3639 /* Note: only the first valid tracking parameter of each
3640 * applies.
3641 */
3642
3643 if (stkctr_entry(&s->stkctr[http_req_trk_idx(rule->action)]) == NULL) {
3644 struct stktable *t;
3645 struct stksess *ts;
3646 struct stktable_key *key;
3647 void *ptr;
3648
3649 t = rule->act_prm.trk_ctr.table.t;
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3650 key = stktable_fetch_key(t, s->be, sess, s, SMP_OPT_DIR_REQ | SMP_OPT_FINAL, rule->act_prm.trk_ctr.expr, NULL);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3651
3652 if (key && (ts = stktable_get_entry(t, key))) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3653 stream_track_stkctr(&s->stkctr[http_req_trk_idx(rule->action)], t, ts);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3654
3655 /* let's count a new HTTP request as it's the first time we do it */
3656 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT);
3657 if (ptr)
3658 stktable_data_cast(ptr, http_req_cnt)++;
3659
3660 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE);
3661 if (ptr)
3662 update_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
3663 t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1);
3664
3665 stkctr_set_flags(&s->stkctr[http_req_trk_idx(rule->action)], STKCTR_TRACK_CONTENT);
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3666 if (sess->fe != s->be)
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3667 stkctr_set_flags(&s->stkctr[http_req_trk_idx(rule->action)], STKCTR_TRACK_BACKEND);
3668 }
3669 }
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3670 }
3671 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3672
3673 /* we reached the end of the rules, nothing to report */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3674 return HTTP_RULE_RES_CONT;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3675}
3676
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3677
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3678/* Executes the http-response rules <rules> for stream <s>, proxy <px> and
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3679 * transaction <txn>. Returns 3 states: HTTP_RULE_RES_CONT, HTTP_RULE_RES_YIELD
3680 * or HTTP_RULE_RES_STOP. If *CONT is returned, the process can continue the
3681 * evaluation of next rule list. If *STOP is returned, the process must stop
3682 * the evaluation. It may set the TX_SVDENY on txn->flags if it encounters a deny
3683 * rule. If *YIELD is returned, the czller must call again the function with
3684 * the same context.
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3685 */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3686static enum rule_result
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3687http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s)
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3688{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3689 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3690 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3691 struct connection *cli_conn;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3692 struct http_res_rule *rule;
3693 struct hdr_ctx ctx;
3694
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3695 /* If "the current_rule_list" match the executed rule list, we are in
3696 * resume condition. If a resume is needed it is always in the action
3697 * and never in the ACL or converters. In this case, we initialise the
3698 * current rule, and go to the action execution point.
3699 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3700 if (s->current_rule) {
3701 rule = s->current_rule;
3702 s->current_rule = NULL;
3703 if (s->current_rule_list == rules)
3704 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3705 }
3706 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3707
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3708 list_for_each_entry(rule, rules, list) {
3709 if (rule->action >= HTTP_RES_ACT_MAX)
3710 continue;
3711
3712 /* check optional condition */
3713 if (rule->cond) {
3714 int ret;
3715
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3716 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]3717 ret = acl_pass(ret);
3718
3719 if (rule->cond->pol == ACL_COND_UNLESS)
3720 ret = !ret;
3721
3722 if (!ret) /* condition not matched */
3723 continue;
3724 }
3725
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3726resume_execution:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3727 switch (rule->action) {
3728 case HTTP_RES_ACT_ALLOW:
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3729 return HTTP_RULE_RES_STOP; /* "allow" rules are OK */
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3730
3731 case HTTP_RES_ACT_DENY:
3732 txn->flags |= TX_SVDENY;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3733 return HTTP_RULE_RES_STOP;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3734
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3735 case HTTP_RES_ACT_SET_NICE:
3736 s->task->nice = rule->arg.nice;
3737 break;
3738
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3739 case HTTP_RES_ACT_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3740 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3741 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]3742 break;
3743
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3744 case HTTP_RES_ACT_SET_MARK:
3745#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3746 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3747 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]3748#endif
3749 break;
3750
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3751 case HTTP_RES_ACT_SET_LOGL:
3752 s->logs.level = rule->arg.loglevel;
3753 break;
3754
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3755 case HTTP_RES_ACT_REPLACE_HDR:
3756 case HTTP_RES_ACT_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3757 if (http_transform_header(s, &txn->rsp, rule->arg.hdr_add.name,
3758 rule->arg.hdr_add.name_len,
3759 &rule->arg.hdr_add.fmt,
3760 &rule->arg.hdr_add.re, rule->action))
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3761 return HTTP_RULE_RES_STOP; /* note: we should report an error here */
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3762 break;
3763
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3764 case HTTP_RES_ACT_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3765 ctx.idx = 0;
3766 /* remove all occurrences of the header */
3767 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3768 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3769 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3770 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3771 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3772
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3773 case HTTP_RES_ACT_SET_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3774 case HTTP_RES_ACT_ADD_HDR:
3775 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3776 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3777 trash.len = rule->arg.hdr_add.name_len;
3778 trash.str[trash.len++] = ':';
3779 trash.str[trash.len++] = ' ';
3780 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]3781
3782 if (rule->action == HTTP_RES_ACT_SET_HDR) {
3783 /* remove all occurrences of the header */
3784 ctx.idx = 0;
3785 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3786 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3787 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3788 }
3789 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3790 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3791 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3792
3793 case HTTP_RES_ACT_DEL_ACL:
3794 case HTTP_RES_ACT_DEL_MAP: {
3795 struct pat_ref *ref;
3796 char *key;
3797 int len;
3798
3799 /* collect reference */
3800 ref = pat_ref_lookup(rule->arg.map.ref);
3801 if (!ref)
3802 continue;
3803
3804 /* collect key */
3805 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3806 key = trash.str;
3807 key[len] = '\0';
3808
3809 /* perform update */
3810 /* returned code: 1=ok, 0=ko */
3811 pat_ref_delete(ref, key);
3812
3813 break;
3814 }
3815
3816 case HTTP_RES_ACT_ADD_ACL: {
3817 struct pat_ref *ref;
3818 char *key;
3819 struct chunk *trash_key;
3820 int len;
3821
3822 trash_key = get_trash_chunk();
3823
3824 /* collect reference */
3825 ref = pat_ref_lookup(rule->arg.map.ref);
3826 if (!ref)
3827 continue;
3828
3829 /* collect key */
3830 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3831 key = trash_key->str;
3832 key[len] = '\0';
3833
3834 /* perform update */
3835 /* check if the entry already exists */
3836 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3837 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3838
3839 break;
3840 }
3841
3842 case HTTP_RES_ACT_SET_MAP: {
3843 struct pat_ref *ref;
3844 char *key, *value;
3845 struct chunk *trash_key, *trash_value;
3846 int len;
3847
3848 trash_key = get_trash_chunk();
3849 trash_value = get_trash_chunk();
3850
3851 /* collect reference */
3852 ref = pat_ref_lookup(rule->arg.map.ref);
3853 if (!ref)
3854 continue;
3855
3856 /* collect key */
3857 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3858 key = trash_key->str;
3859 key[len] = '\0';
3860
3861 /* collect value */
3862 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3863 value = trash_value->str;
3864 value[len] = '\0';
3865
3866 /* perform update */
3867 if (pat_ref_find_elt(ref, key) != NULL)
3868 /* update entry if it exists */
3869 pat_ref_set(ref, key, value, NULL);
3870 else
3871 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3872 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3873
3874 break;
3875 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3876
3877 case HTTP_RES_ACT_CUSTOM_CONT:
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3878 if (!rule->action_ptr(rule, px, s)) {
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3879 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3880 return HTTP_RULE_RES_YIELD;
3881 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3882 break;
3883
3884 case HTTP_RES_ACT_CUSTOM_STOP:
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3885 rule->action_ptr(rule, px, s);
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3886 return HTTP_RULE_RES_STOP;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3887 }
3888 }
3889
3890 /* we reached the end of the rules, nothing to report */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3891 return HTTP_RULE_RES_CONT;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3892}
3893
3894
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3895/* Perform an HTTP redirect based on the information in <rule>. The function
3896 * returns non-zero on success, or zero in case of a, irrecoverable error such
3897 * as too large a request to build a valid response.
3898 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3899static 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]3900{
3901 struct http_msg *msg = &txn->req;
3902 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3903 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3904
3905 /* build redirect message */
3906 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3907 case 308:
3908 msg_fmt = HTTP_308;
3909 break;
3910 case 307:
3911 msg_fmt = HTTP_307;
3912 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3913 case 303:
3914 msg_fmt = HTTP_303;
3915 break;
3916 case 301:
3917 msg_fmt = HTTP_301;
3918 break;
3919 case 302:
3920 default:
3921 msg_fmt = HTTP_302;
3922 break;
3923 }
3924
3925 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3926 return 0;
3927
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3928 location = trash.str + trash.len;
3929
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3930 switch(rule->type) {
3931 case REDIRECT_TYPE_SCHEME: {
3932 const char *path;
3933 const char *host;
3934 struct hdr_ctx ctx;
3935 int pathlen;
3936 int hostlen;
3937
3938 host = "";
3939 hostlen = 0;
3940 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]3941 if (http_find_header2("Host", 4, txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3942 host = ctx.line + ctx.val;
3943 hostlen = ctx.vlen;
3944 }
3945
3946 path = http_get_path(txn);
3947 /* build message using path */
3948 if (path) {
3949 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3950 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3951 int qs = 0;
3952 while (qs < pathlen) {
3953 if (path[qs] == '?') {
3954 pathlen = qs;
3955 break;
3956 }
3957 qs++;
3958 }
3959 }
3960 } else {
3961 path = "/";
3962 pathlen = 1;
3963 }
3964
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3965 if (rule->rdr_str) { /* this is an old "redirect" rule */
3966 /* check if we can add scheme + "://" + host + path */
3967 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3968 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3969
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3970 /* add scheme */
3971 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3972 trash.len += rule->rdr_len;
3973 }
3974 else {
3975 /* add scheme with executing log format */
3976 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]3977
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3978 /* check if we can add scheme + "://" + host + path */
3979 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
3980 return 0;
3981 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3982 /* add "://" */
3983 memcpy(trash.str + trash.len, "://", 3);
3984 trash.len += 3;
3985
3986 /* add host */
3987 memcpy(trash.str + trash.len, host, hostlen);
3988 trash.len += hostlen;
3989
3990 /* add path */
3991 memcpy(trash.str + trash.len, path, pathlen);
3992 trash.len += pathlen;
3993
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3994 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3995 if (trash.len && trash.str[trash.len - 1] != '/' &&
3996 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3997 if (trash.len > trash.size - 5)
3998 return 0;
3999 trash.str[trash.len] = '/';
4000 trash.len++;
4001 }
4002
4003 break;
4004 }
4005 case REDIRECT_TYPE_PREFIX: {
4006 const char *path;
4007 int pathlen;
4008
4009 path = http_get_path(txn);
4010 /* build message using path */
4011 if (path) {
4012 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
4013 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
4014 int qs = 0;
4015 while (qs < pathlen) {
4016 if (path[qs] == '?') {
4017 pathlen = qs;
4018 break;
4019 }
4020 qs++;
4021 }
4022 }
4023 } else {
4024 path = "/";
4025 pathlen = 1;
4026 }
4027
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4028 if (rule->rdr_str) { /* this is an old "redirect" rule */
4029 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
4030 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4031
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4032 /* add prefix. Note that if prefix == "/", we don't want to
4033 * add anything, otherwise it makes it hard for the user to
4034 * configure a self-redirection.
4035 */
4036 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
4037 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
4038 trash.len += rule->rdr_len;
4039 }
4040 }
4041 else {
4042 /* add prefix with executing log format */
4043 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
4044
4045 /* Check length */
4046 if (trash.len + pathlen > trash.size - 4)
4047 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4048 }
4049
4050 /* add path */
4051 memcpy(trash.str + trash.len, path, pathlen);
4052 trash.len += pathlen;
4053
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4054 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4055 if (trash.len && trash.str[trash.len - 1] != '/' &&
4056 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
4057 if (trash.len > trash.size - 5)
4058 return 0;
4059 trash.str[trash.len] = '/';
4060 trash.len++;
4061 }
4062
4063 break;
4064 }
4065 case REDIRECT_TYPE_LOCATION:
4066 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4067 if (rule->rdr_str) { /* this is an old "redirect" rule */
4068 if (trash.len + rule->rdr_len > trash.size - 4)
4069 return 0;
4070
4071 /* add location */
4072 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
4073 trash.len += rule->rdr_len;
4074 }
4075 else {
4076 /* add location with executing log format */
4077 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]4078
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4079 /* Check left length */
4080 if (trash.len > trash.size - 4)
4081 return 0;
4082 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4083 break;
4084 }
4085
4086 if (rule->cookie_len) {
4087 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
4088 trash.len += 14;
4089 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
4090 trash.len += rule->cookie_len;
4091 memcpy(trash.str + trash.len, "\r\n", 2);
4092 trash.len += 2;
4093 }
4094
4095 /* add end of headers and the keep-alive/close status.
4096 * We may choose to set keep-alive if the Location begins
4097 * with a slash, because the client will come back to the
4098 * same server.
4099 */
4100 txn->status = rule->code;
4101 /* let's log the request time */
4102 s->logs.tv_request = now;
4103
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4104 if (*location == '/' &&
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4105 (msg->flags & HTTP_MSGF_XFER_LEN) &&
4106 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
4107 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
4108 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
4109 /* keep-alive possible */
4110 if (!(msg->flags & HTTP_MSGF_VER_11)) {
4111 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4112 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
4113 trash.len += 30;
4114 } else {
4115 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
4116 trash.len += 24;
4117 }
4118 }
4119 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
4120 trash.len += 4;
4121 bo_inject(txn->rsp.chn, trash.str, trash.len);
4122 /* "eat" the request */
4123 bi_fast_delete(txn->req.chn->buf, msg->sov);
Willy Tarreau6d8bac72014-04-25 12:19:32 +0200[diff] [blame]4124 msg->next -= msg->sov;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4125 msg->sov = 0;
4126 txn->req.chn->analysers = AN_REQ_HTTP_XFER_BODY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4127 s->res.analysers = AN_RES_HTTP_XFER_BODY;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4128 txn->req.msg_state = HTTP_MSG_CLOSED;
4129 txn->rsp.msg_state = HTTP_MSG_DONE;
4130 } else {
4131 /* keep-alive not possible */
4132 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4133 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
4134 trash.len += 29;
4135 } else {
4136 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
4137 trash.len += 23;
4138 }
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4139 stream_int_retnclose(&s->si[0], &trash);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4140 txn->req.chn->analysers = 0;
4141 }
4142
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4143 if (!(s->flags & SF_ERR_MASK))
4144 s->flags |= SF_ERR_LOCAL;
4145 if (!(s->flags & SF_FINST_MASK))
4146 s->flags |= SF_FINST_R;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4147
4148 return 1;
4149}
4150
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4151/* This stream analyser runs all HTTP request processing which is common to
4152 * frontends and backends, which means blocking ACLs, filters, connection-close,
4153 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4154 * 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]4155 * either needs more data or wants to immediately abort the request (eg: deny,
4156 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4157 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4158int 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]4159{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4160 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4161 struct http_txn *txn = s->txn;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4162 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4163 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]4164 struct cond_wordlist *wl;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4165 enum rule_result verdict;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4166
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4167 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4168 /* we need more data */
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4169 goto return_prx_yield;
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4170 }
4171
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4172 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]4173 now_ms, __FUNCTION__,
4174 s,
4175 req,
4176 req->rex, req->wex,
4177 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4178 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4179 req->analysers);
4180
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4181 /* just in case we have some per-backend tracking */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4182 stream_inc_be_http_req_ctr(s);
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4183
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4184 /* evaluate http-request rules */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4185 if (!LIST_ISEMPTY(&px->http_req_rules)) {
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]4186 verdict = http_req_get_intercept_rule(px, &px->http_req_rules, s);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]4187
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4188 switch (verdict) {
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4189 case HTTP_RULE_RES_YIELD: /* some data miss, call the function later. */
4190 goto return_prx_yield;
4191
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4192 case HTTP_RULE_RES_CONT:
4193 case HTTP_RULE_RES_STOP: /* nothing to do */
4194 break;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4195
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4196 case HTTP_RULE_RES_DENY: /* deny or tarpit */
4197 if (txn->flags & TX_CLTARPIT)
4198 goto tarpit;
4199 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4200
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4201 case HTTP_RULE_RES_ABRT: /* abort request, response already sent. Eg: auth */
4202 goto return_prx_cond;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4203
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4204 case HTTP_RULE_RES_DONE: /* OK, but terminate request processing (eg: redirect) */
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4205 goto done;
4206
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4207 case HTTP_RULE_RES_BADREQ: /* failed with a bad request */
4208 goto return_bad_req;
4209 }
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4210 }
4211
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4212 /* OK at this stage, we know that the request was accepted according to
4213 * the http-request rules, we can check for the stats. Note that the
4214 * URI is detected *before* the req* rules in order not to be affected
4215 * by a possible reqrep, while they are processed *after* so that a
4216 * reqdeny can still block them. This clearly needs to change in 1.6!
4217 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4218 if (stats_check_uri(&s->si[1], txn, px)) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4219 s->target = &http_stats_applet.obj_type;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4220 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target)))) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4221 txn->status = 500;
4222 s->logs.tv_request = now;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4223 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]4224
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4225 if (!(s->flags & SF_ERR_MASK))
4226 s->flags |= SF_ERR_RESOURCE;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4227 goto return_prx_cond;
4228 }
4229
4230 /* parse the whole stats request and extract the relevant information */
4231 http_handle_stats(s, req);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]4232 verdict = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4233 /* not all actions implemented: deny, allow, auth */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4234
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4235 if (verdict == HTTP_RULE_RES_DENY) /* stats http-request deny */
4236 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4237
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4238 if (verdict == HTTP_RULE_RES_ABRT) /* stats auth / stats http-request auth */
4239 goto return_prx_cond;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]4240 }
4241
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4242 /* evaluate the req* rules except reqadd */
4243 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]4244 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4245 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4246
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4247 if (txn->flags & TX_CLDENY)
4248 goto deny;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]4249
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4250 if (txn->flags & TX_CLTARPIT)
4251 goto tarpit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4252 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4253
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4254 /* add request headers from the rule sets in the same order */
4255 list_for_each_entry(wl, &px->req_add, list) {
4256 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4257 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]4258 ret = acl_pass(ret);
4259 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
4260 ret = !ret;
4261 if (!ret)
4262 continue;
4263 }
4264
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4265 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4266 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]4267 }
4268
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4269
4270 /* Proceed with the stats now. */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]4271 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]4272 /* process the stats request now */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4273 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
4274 sess->fe->fe_counters.intercepted_req++;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4275
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4276 if (!(s->flags & SF_ERR_MASK)) // this is not really an error but it is
4277 s->flags |= SF_ERR_LOCAL; // to mark that it comes from the proxy
4278 if (!(s->flags & SF_FINST_MASK))
4279 s->flags |= SF_FINST_R;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4280
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4281 /* we may want to compress the stats page */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4282 if (sess->fe->comp || s->be->comp)
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4283 select_compression_request_header(s, req->buf);
4284
4285 /* 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]4286 req->analysers = (req->analysers & AN_REQ_HTTP_BODY) | AN_REQ_HTTP_XFER_BODY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4287 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4288 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4289
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4290 /* check whether we have some ACLs set to redirect this request */
4291 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4292 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4293 int ret;
4294
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4295 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]4296 ret = acl_pass(ret);
4297 if (rule->cond->pol == ACL_COND_UNLESS)
4298 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4299 if (!ret)
4300 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4301 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4302 if (!http_apply_redirect_rule(rule, s, txn))
4303 goto return_bad_req;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4304 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4305 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4306
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4307 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
4308 * If this happens, then the data will not come immediately, so we must
4309 * send all what we have without waiting. Note that due to the small gain
4310 * 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]4311 * 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]4312 * itself once used.
4313 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4314 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4315
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4316 done: /* done with this analyser, continue with next ones that the calling
4317 * points will have set, if any.
4318 */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4319 req->analyse_exp = TICK_ETERNITY;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4320 done_without_exp: /* done with this analyser, but dont reset the analyse_exp. */
4321 req->analysers &= ~an_bit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4322 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4323
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4324 tarpit:
4325 /* When a connection is tarpitted, we use the tarpit timeout,
4326 * which may be the same as the connect timeout if unspecified.
4327 * If unset, then set it to zero because we really want it to
4328 * eventually expire. We build the tarpit as an analyser.
4329 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4330 channel_erase(&s->req);
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4331
4332 /* wipe the request out so that we can drop the connection early
4333 * if the client closes first.
4334 */
4335 channel_dont_connect(req);
4336 req->analysers = 0; /* remove switching rules etc... */
4337 req->analysers |= AN_REQ_HTTP_TARPIT;
4338 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
4339 if (!req->analyse_exp)
4340 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4341 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4342 sess->fe->fe_counters.denied_req++;
4343 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4344 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4345 if (sess->listener->counters)
4346 sess->listener->counters->denied_req++;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4347 goto done_without_exp;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4348
4349 deny: /* this request was blocked (denied) */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4350 txn->flags |= TX_CLDENY;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]4351 txn->status = http_err_codes[txn->rule_deny_status];
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4352 s->logs.tv_request = now;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]4353 stream_int_retnclose(&s->si[0], http_error_message(s, txn->rule_deny_status));
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4354 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4355 sess->fe->fe_counters.denied_req++;
4356 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4357 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4358 if (sess->listener->counters)
4359 sess->listener->counters->denied_req++;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4360 goto return_prx_cond;
4361
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4362 return_bad_req:
4363 /* We centralize bad requests processing here */
4364 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
4365 /* we detected a parsing error. We want to archive this request
4366 * in the dedicated proxy area for later troubleshooting.
4367 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4368 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]4369 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4370
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4371 txn->req.msg_state = HTTP_MSG_ERROR;
4372 txn->status = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4373 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4374
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4375 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4376 if (sess->listener->counters)
4377 sess->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4378
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4379 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4380 if (!(s->flags & SF_ERR_MASK))
4381 s->flags |= SF_ERR_PRXCOND;
4382 if (!(s->flags & SF_FINST_MASK))
4383 s->flags |= SF_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]4384
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4385 req->analysers = 0;
4386 req->analyse_exp = TICK_ETERNITY;
4387 return 0;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4388
4389 return_prx_yield:
4390 channel_dont_connect(req);
4391 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4392}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4393
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4394/* This function performs all the processing enabled for the current request.
4395 * It returns 1 if the processing can continue on next analysers, or zero if it
4396 * needs more data, encounters an error, or wants to immediately abort the
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4397 * request. It relies on buffers flags, and updates s->req.analysers.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4398 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4399int http_process_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4400{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4401 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4402 struct http_txn *txn = s->txn;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4403 struct http_msg *msg = &txn->req;
Willy Tarreauee335e62015-04-21 18:15:13 +0200[diff] [blame]4404 struct connection *cli_conn = objt_conn(strm_sess(s)->origin);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4405
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4406 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4407 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4408 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4409 return 0;
4410 }
4411
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4412 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]4413 now_ms, __FUNCTION__,
4414 s,
4415 req,
4416 req->rex, req->wex,
4417 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4418 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4419 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4420
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4421 if (sess->fe->comp || s->be->comp)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]4422 select_compression_request_header(s, req->buf);
4423
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4424 /*
4425 * Right now, we know that we have processed the entire headers
4426 * and that unwanted requests have been filtered out. We can do
4427 * whatever we want with the remaining request. Also, now we
4428 * may have separate values for ->fe, ->be.
4429 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4430
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4431 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4432 * If HTTP PROXY is set we simply get remote server address parsing
4433 * incoming request. Note that this requires that a connection is
4434 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4435 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4436 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SF_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4437 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4438 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4439
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]4440 /* Note that for now we don't reuse existing proxy connections */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4441 if (unlikely((conn = si_alloc_conn(&s->si[1], 0)) == NULL)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4442 txn->req.msg_state = HTTP_MSG_ERROR;
4443 txn->status = 500;
4444 req->analysers = 0;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4445 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_500));
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4446
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4447 if (!(s->flags & SF_ERR_MASK))
4448 s->flags |= SF_ERR_RESOURCE;
4449 if (!(s->flags & SF_FINST_MASK))
4450 s->flags |= SF_FINST_R;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4451
4452 return 0;
4453 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4454
4455 path = http_get_path(txn);
4456 url2sa(req->buf->p + msg->sl.rq.u,
4457 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]4458 &conn->addr.to, NULL);
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4459 /* if the path was found, we have to remove everything between
4460 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
4461 * found, we need to replace from req->buf->p + msg->sl.rq.u for
4462 * u_l characters by a single "/".
4463 */
4464 if (path) {
4465 char *cur_ptr = req->buf->p;
4466 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4467 int delta;
4468
4469 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
4470 http_msg_move_end(&txn->req, delta);
4471 cur_end += delta;
4472 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4473 goto return_bad_req;
4474 }
4475 else {
4476 char *cur_ptr = req->buf->p;
4477 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4478 int delta;
4479
4480 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
4481 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
4482 http_msg_move_end(&txn->req, delta);
4483 cur_end += delta;
4484 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4485 goto return_bad_req;
4486 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4487 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4488
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4489 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4490 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4491 * Note that doing so might move headers in the request, but
4492 * the fields will stay coherent and the URI will not move.
4493 * This should only be performed in the backend.
4494 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4495 if ((s->be->cookie_name || s->be->appsession_name || sess->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4496 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
4497 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]4498
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4499 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4500 * 8: the appsession cookie was looked up very early in 1.2,
4501 * so let's do the same now.
4502 */
4503
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]4504 /* It needs to look into the URI unless persistence must be ignored */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4505 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SF_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4506 get_srv_from_appsession(s, req->buf->p + msg->sl.rq.u, msg->sl.rq.u_l);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4507 }
4508
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4509 /* add unique-id if "header-unique-id" is specified */
4510
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4511 if (!LIST_ISEMPTY(&sess->fe->format_unique_id)) {
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4512 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
4513 goto return_bad_req;
4514 s->unique_id[0] = '\0';
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4515 build_logline(s, s->unique_id, UNIQUEID_LEN, &sess->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4516 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4517
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4518 if (sess->fe->header_unique_id && s->unique_id) {
4519 chunk_printf(&trash, "%s: %s", sess->fe->header_unique_id, s->unique_id);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4520 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4521 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4522 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]4523 goto return_bad_req;
4524 }
4525
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4526 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4527 * 9: add X-Forwarded-For if either the frontend or the backend
4528 * asks for it.
4529 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4530 if ((sess->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4531 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4532 if (!((sess->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
4533 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : sess->fe->fwdfor_hdr_name,
4534 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]4535 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4536 /* The header is set to be added only if none is present
4537 * and we found it, so don't do anything.
4538 */
4539 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4540 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4541 /* Add an X-Forwarded-For header unless the source IP is
4542 * in the 'except' network range.
4543 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4544 if ((!sess->fe->except_mask.s_addr ||
4545 (((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr & sess->fe->except_mask.s_addr)
4546 != sess->fe->except_net.s_addr) &&
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4547 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4548 (((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]4549 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4550 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4551 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4552 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4553
4554 /* Note: we rely on the backend to get the header name to be used for
4555 * x-forwarded-for, because the header is really meant for the backends.
4556 * However, if the backend did not specify any option, we have to rely
4557 * on the frontend's header name.
4558 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4559 if (s->be->fwdfor_hdr_len) {
4560 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4561 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4562 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4563 len = sess->fe->fwdfor_hdr_len;
4564 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4565 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4566 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]4567
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4568 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]4569 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4570 }
4571 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4572 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4573 /* FIXME: for the sake of completeness, we should also support
4574 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4575 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4576 int len;
4577 char pn[INET6_ADDRSTRLEN];
4578 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4579 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4580 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4581
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4582 /* Note: we rely on the backend to get the header name to be used for
4583 * x-forwarded-for, because the header is really meant for the backends.
4584 * However, if the backend did not specify any option, we have to rely
4585 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4586 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4587 if (s->be->fwdfor_hdr_len) {
4588 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4589 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4590 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4591 len = sess->fe->fwdfor_hdr_len;
4592 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4593 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4594 len += snprintf(trash.str + len, trash.size - len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4595
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4596 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]4597 goto return_bad_req;
4598 }
4599 }
4600
4601 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4602 * 10: add X-Original-To if either the frontend or the backend
4603 * asks for it.
4604 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4605 if ((sess->fe->options | s->be->options) & PR_O_ORGTO) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4606
4607 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4608 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4609 /* Add an X-Original-To header unless the destination IP is
4610 * in the 'except' network range.
4611 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4612 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4613
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4614 if (cli_conn->addr.to.ss_family == AF_INET &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4615 ((!sess->fe->except_mask_to.s_addr ||
4616 (((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr.s_addr & sess->fe->except_mask_to.s_addr)
4617 != sess->fe->except_to.s_addr) &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4618 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4619 (((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]4620 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4621 int len;
4622 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4623 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4624
4625 /* Note: we rely on the backend to get the header name to be used for
4626 * x-original-to, 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.
4629 */
4630 if (s->be->orgto_hdr_len) {
4631 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4632 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4633 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4634 len = sess->fe->orgto_hdr_len;
4635 memcpy(trash.str, sess->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4636 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4637 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]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))
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4640 goto return_bad_req;
4641 }
4642 }
4643 }
4644
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4645 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
4646 * If an "Upgrade" token is found, the header is left untouched in order not to have
4647 * to deal with some servers bugs : some of them fail an Upgrade if anything but
4648 * "Upgrade" is present in the Connection header.
4649 */
4650 if (!(txn->flags & TX_HDR_CONN_UPG) &&
4651 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4652 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4653 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4654 unsigned int want_flags = 0;
4655
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4656 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4657 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4658 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4659 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4660 !((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4661 want_flags |= TX_CON_CLO_SET;
4662 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4663 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4664 ((sess->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4665 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4666 ((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4667 want_flags |= TX_CON_KAL_SET;
4668 }
4669
4670 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4671 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4672 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4673
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4674
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4675 /* If we have no server assigned yet and we're balancing on url_param
4676 * with a POST request, we may be interested in checking the body for
4677 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4678 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4679 if (!(s->flags & (SF_ASSIGNED|SF_DIRECT)) &&
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4680 s->txn->meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4681 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4682 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4683 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4684 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4685
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4686 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4687 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4688#ifdef TCP_QUICKACK
4689 /* We expect some data from the client. Unless we know for sure
4690 * we already have a full request, we have to re-enable quick-ack
4691 * in case we previously disabled it, otherwise we might cause
4692 * the client to delay further data.
4693 */
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4694 if ((sess->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]4695 cli_conn && conn_ctrl_ready(cli_conn) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4696 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4697 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4698 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4699#endif
4700 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4701
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4702 /*************************************************************
4703 * OK, that's finished for the headers. We have done what we *
4704 * could. Let's switch to the DATA state. *
4705 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4706 req->analyse_exp = TICK_ETERNITY;
4707 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4708
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4709 /* if the server closes the connection, we want to immediately react
4710 * and close the socket to save packets and syscalls.
4711 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4712 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4713 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4714
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4715 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4716 /* OK let's go on with the BODY now */
4717 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4718
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4719 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4720 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4721 /* we detected a parsing error. We want to archive this request
4722 * in the dedicated proxy area for later troubleshooting.
4723 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4724 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]4725 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4726
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4727 txn->req.msg_state = HTTP_MSG_ERROR;
4728 txn->status = 400;
4729 req->analysers = 0;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4730 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4731
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4732 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4733 if (sess->listener->counters)
4734 sess->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4735
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4736 if (!(s->flags & SF_ERR_MASK))
4737 s->flags |= SF_ERR_PRXCOND;
4738 if (!(s->flags & SF_FINST_MASK))
4739 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4740 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4741}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4742
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4743/* This function is an analyser which processes the HTTP tarpit. It always
4744 * returns zero, at the beginning because it prevents any other processing
4745 * from occurring, and at the end because it terminates the request.
4746 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4747int http_process_tarpit(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4748{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4749 struct http_txn *txn = s->txn;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4750
4751 /* This connection is being tarpitted. The CLIENT side has
4752 * already set the connect expiration date to the right
4753 * timeout. We just have to check that the client is still
4754 * there and that the timeout has not expired.
4755 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4756 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4757 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4758 !tick_is_expired(req->analyse_exp, now_ms))
4759 return 0;
4760
4761 /* We will set the queue timer to the time spent, just for
4762 * logging purposes. We fake a 500 server error, so that the
4763 * attacker will not suspect his connection has been tarpitted.
4764 * It will not cause trouble to the logs because we can exclude
4765 * the tarpitted connections by filtering on the 'PT' status flags.
4766 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4767 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4768
4769 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4770 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4771 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4772
4773 req->analysers = 0;
4774 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4775
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4776 if (!(s->flags & SF_ERR_MASK))
4777 s->flags |= SF_ERR_PRXCOND;
4778 if (!(s->flags & SF_FINST_MASK))
4779 s->flags |= SF_FINST_T;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4780 return 0;
4781}
4782
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4783/* This function is an analyser which waits for the HTTP request body. It waits
4784 * for either the buffer to be full, or the full advertised contents to have
4785 * reached the buffer. It must only be called after the standard HTTP request
4786 * processing has occurred, because it expects the request to be parsed and will
4787 * look for the Expect header. It may send a 100-Continue interim response. It
4788 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
4789 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
4790 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4791 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4792int http_wait_for_request_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4793{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4794 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4795 struct http_txn *txn = s->txn;
4796 struct http_msg *msg = &s->txn->req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4797
4798 /* We have to parse the HTTP request body to find any required data.
4799 * "balance url_param check_post" should have been the only way to get
4800 * into this. We were brought here after HTTP header analysis, so all
4801 * related structures are ready.
4802 */
4803
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4804 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
4805 /* This is the first call */
4806 if (msg->msg_state < HTTP_MSG_BODY)
4807 goto missing_data;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4808
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4809 if (msg->msg_state < HTTP_MSG_100_SENT) {
4810 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4811 * send an HTTP/1.1 100 Continue intermediate response.
4812 */
4813 if (msg->flags & HTTP_MSGF_VER_11) {
4814 struct hdr_ctx ctx;
4815 ctx.idx = 0;
4816 /* Expect is allowed in 1.1, look for it */
4817 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
4818 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4819 bo_inject(&s->res, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4820 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4821 }
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4822 msg->msg_state = HTTP_MSG_100_SENT;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4823 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4824
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4825 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4826 * req->buf->p still points to the beginning of the message. We
4827 * must save the body in msg->next because it survives buffer
4828 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4829 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4830 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4831
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4832 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4833 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4834 else
4835 msg->msg_state = HTTP_MSG_DATA;
4836 }
4837
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4838 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
4839 /* We're in content-length mode, we just have to wait for enough data. */
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4840 if (http_body_bytes(msg) < msg->body_len)
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4841 goto missing_data;
4842
4843 /* OK we have everything we need now */
4844 goto http_end;
4845 }
4846
4847 /* OK here we're parsing a chunked-encoded message */
4848
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4849 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4850 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4851 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4852 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4853 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4854 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4855
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4856 if (!ret)
4857 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4858 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4859 stream_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4860 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4861 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4862 }
4863
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4864 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4865 * We have the first data byte is in msg->sov + msg->sol. We're waiting
4866 * for at least a whole chunk or the whole content length bytes after
4867 * msg->sov + msg->sol.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4868 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4869 if (msg->msg_state == HTTP_MSG_TRAILERS)
4870 goto http_end;
4871
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4872 if (http_body_bytes(msg) >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4873 goto http_end;
4874
4875 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4876 /* we get here if we need to wait for more data. If the buffer is full,
4877 * we have the maximum we can expect.
4878 */
4879 if (buffer_full(req->buf, global.tune.maxrewrite))
4880 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4881
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4882 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4883 txn->status = 408;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4884 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4885
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4886 if (!(s->flags & SF_ERR_MASK))
4887 s->flags |= SF_ERR_CLITO;
4888 if (!(s->flags & SF_FINST_MASK))
4889 s->flags |= SF_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4890 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4891 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4892
4893 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4894 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4895 /* Not enough data. We'll re-use the http-request
4896 * timeout here. Ideally, we should set the timeout
4897 * relative to the accept() date. We just set the
4898 * request timeout once at the beginning of the
4899 * request.
4900 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4901 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4902 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4903 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4904 return 0;
4905 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4906
4907 http_end:
4908 /* The situation will not evolve, so let's give up on the analysis. */
4909 s->logs.tv_request = now; /* update the request timer to reflect full request */
4910 req->analysers &= ~an_bit;
4911 req->analyse_exp = TICK_ETERNITY;
4912 return 1;
4913
4914 return_bad_req: /* let's centralize all bad requests */
4915 txn->req.msg_state = HTTP_MSG_ERROR;
4916 txn->status = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4917 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4918
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4919 if (!(s->flags & SF_ERR_MASK))
4920 s->flags |= SF_ERR_PRXCOND;
4921 if (!(s->flags & SF_FINST_MASK))
4922 s->flags |= SF_FINST_R;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4923
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4924 return_err_msg:
4925 req->analysers = 0;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4926 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4927 if (sess->listener->counters)
4928 sess->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4929 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4930}
4931
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4932/* send a server's name with an outgoing request over an established connection.
4933 * Note: this function is designed to be called once the request has been scheduled
4934 * for being forwarded. This is the reason why it rewinds the buffer before
4935 * proceeding.
4936 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4937int 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]4938
4939 struct hdr_ctx ctx;
4940
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4941 char *hdr_name = be->server_id_hdr_name;
4942 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4943 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4944 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4945 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4946
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4947 ctx.idx = 0;
4948
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]4949 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4950 if (old_o) {
4951 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4952 b_rew(chn->buf, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4953 txn->req.next += old_o;
4954 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4955 }
4956
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4957 old_i = chn->buf->i;
4958 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]4959 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4960 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4961 }
4962
4963 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4964 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4965 memcpy(hdr_val, hdr_name, hdr_name_len);
4966 hdr_val += hdr_name_len;
4967 *hdr_val++ = ':';
4968 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4969 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4970 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]4971
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4972 if (old_o) {
4973 /* If this was a forwarded request, we must readjust the amount of
4974 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4975 * variations. Note that the current state is >= HTTP_MSG_BODY,
4976 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4977 */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4978 old_o += chn->buf->i - old_i;
4979 b_adv(chn->buf, old_o);
4980 txn->req.next -= old_o;
4981 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4982 }
4983
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4984 return 0;
4985}
4986
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4987/* Terminate current transaction and prepare a new one. This is very tricky
4988 * right now but it works.
4989 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4990void http_end_txn_clean_session(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4991{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4992 int prev_status = s->txn->status;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]4993 struct proxy *fe = strm_fe(s);
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4994
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4995 /* FIXME: We need a more portable way of releasing a backend's and a
4996 * server's connections. We need a safer way to reinitialize buffer
4997 * flags. We also need a more accurate method for computing per-request
4998 * data.
4999 */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5000
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5001 /* unless we're doing keep-alive, we want to quickly close the connection
5002 * to the server.
5003 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5004 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5005 !si_conn_ready(&s->si[1])) {
5006 s->si[1].flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
5007 si_shutr(&s->si[1]);
5008 si_shutw(&s->si[1]);
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5009 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5010
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5011 if (s->flags & SF_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5012 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]5013 if (unlikely(s->srv_conn))
5014 sess_change_server(s, NULL);
5015 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5016
5017 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5018 stream_process_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5019
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5020 if (s->txn->status) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5021 int n;
5022
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5023 n = s->txn->status / 100;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5024 if (n < 1 || n > 5)
5025 n = 0;
5026
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5027 if (fe->mode == PR_MODE_HTTP) {
5028 fe->fe_counters.p.http.rsp[n]++;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5029 if (s->comp_algo && (s->flags & SF_COMP_READY))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5030 fe->fe_counters.p.http.comp_rsp++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5031 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5032 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5033 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5034 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5035 s->be->be_counters.p.http.cum_req++;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5036 if (s->comp_algo && (s->flags & SF_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5037 s->be->be_counters.p.http.comp_rsp++;
5038 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5039 }
5040
5041 /* don't count other requests' data */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5042 s->logs.bytes_in -= s->req.buf->i;
5043 s->logs.bytes_out -= s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5044
5045 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5046 if (!LIST_ISEMPTY(&fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5047 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5048 (!(fe->options & PR_O_NULLNOLOG) || s->req.total)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5049 s->do_log(s);
5050 }
5051
Willy Tarreaud713bcc2014-06-25 15:36:04 +0200[diff] [blame]5052 /* stop tracking content-based counters */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5053 stream_stop_content_counters(s);
5054 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +0200[diff] [blame]5055
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5056 s->logs.accept_date = date; /* user-visible date for logging */
5057 s->logs.tv_accept = now; /* corrected date for internal use */
5058 tv_zero(&s->logs.tv_request);
5059 s->logs.t_queue = -1;
5060 s->logs.t_connect = -1;
5061 s->logs.t_data = -1;
5062 s->logs.t_close = 0;
5063 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
5064 s->logs.srv_queue_size = 0; /* we will get this number soon */
5065
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5066 s->logs.bytes_in = s->req.total = s->req.buf->i;
5067 s->logs.bytes_out = s->res.total = s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5068
5069 if (s->pend_pos)
5070 pendconn_free(s->pend_pos);
5071
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5072 if (objt_server(s->target)) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5073 if (s->flags & SF_CURR_SESS) {
5074 s->flags &= ~SF_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5075 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5076 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5077 if (may_dequeue_tasks(objt_server(s->target), s->be))
5078 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5079 }
5080
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5081 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5082
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5083 /* only release our endpoint if we don't intend to reuse the
5084 * connection.
5085 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5086 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5087 !si_conn_ready(&s->si[1])) {
5088 si_release_endpoint(&s->si[1]);
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5089 }
5090
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5091 s->si[1].state = s->si[1].prev_state = SI_ST_INI;
5092 s->si[1].err_type = SI_ET_NONE;
5093 s->si[1].conn_retries = 0; /* used for logging too */
5094 s->si[1].exp = TICK_ETERNITY;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5095 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]5096 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);
5097 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]5098 s->flags &= ~(SF_DIRECT|SF_ASSIGNED|SF_ADDR_SET|SF_BE_ASSIGNED|SF_FORCE_PRST|SF_IGNORE_PRST);
5099 s->flags &= ~(SF_CURR_SESS|SF_REDIRECTABLE|SF_SRV_REUSED);
5100 s->flags &= ~(SF_ERR_MASK|SF_FINST_MASK|SF_REDISP);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]5101
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5102 s->txn->meth = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5103 http_reset_txn(s);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5104 s->txn->flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5105
5106 if (prev_status == 401 || prev_status == 407) {
5107 /* In HTTP keep-alive mode, if we receive a 401, we still have
5108 * a chance of being able to send the visitor again to the same
5109 * server over the same connection. This is required by some
5110 * broken protocols such as NTLM, and anyway whenever there is
5111 * an opportunity for sending the challenge to the proper place,
5112 * it's better to do it (at least it helps with debugging).
5113 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5114 s->txn->flags |= TX_PREFER_LAST;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5115 }
5116
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5117 if (fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5118 s->si[1].flags |= SI_FL_INDEP_STR;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5119
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5120 if (fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5121 s->req.flags |= CF_NEVER_WAIT;
5122 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]5123 }
5124
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5125 /* if the request buffer is not empty, it means we're
5126 * about to process another request, so send pending
5127 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5128 * Just don't do this if the buffer is close to be full,
5129 * because the request will wait for it to flush a little
5130 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5131 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5132 if (s->req.buf->i) {
5133 if (s->res.buf->o &&
5134 !buffer_full(s->res.buf, global.tune.maxrewrite) &&
5135 bi_end(s->res.buf) <= s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)
5136 s->res.flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5137 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5138
5139 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5140 channel_auto_read(&s->req);
5141 channel_auto_close(&s->req);
5142 channel_auto_read(&s->res);
5143 channel_auto_close(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5144
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]5145 /* we're in keep-alive with an idle connection, monitor it */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5146 si_idle_conn(&s->si[1]);
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]5147
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]5148 s->req.analysers = strm_li(s)->analysers;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5149 s->res.analysers = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5150}
5151
5152
5153/* This function updates the request state machine according to the response
5154 * state machine and buffer flags. It returns 1 if it changes anything (flag
5155 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5156 * it is only used to find when a request/response couple is complete. Both
5157 * this function and its equivalent should loop until both return zero. It
5158 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5159 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5160int http_sync_req_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5161{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5162 struct channel *chn = &s->req;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5163 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5164 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5165 unsigned int old_state = txn->req.msg_state;
5166
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5167 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
5168 return 0;
5169
5170 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5171 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5172 * We can shut the read side unless we want to abort_on_close,
5173 * or we have a POST request. The issue with POST requests is
5174 * that some browsers still send a CRLF after the request, and
5175 * this CRLF must be read so that it does not remain in the kernel
5176 * buffers, otherwise a close could cause an RST on some systems
5177 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5178 * Note that if we're using keep-alive on the client side, we'd
5179 * rather poll now and keep the polling enabled for the whole
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5180 * stream's life than enabling/disabling it between each
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5181 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5182 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5183 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5184 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5185 !(s->be->options & PR_O_ABRT_CLOSE) &&
5186 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5187 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5188
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5189 /* if the server closes the connection, we want to immediately react
5190 * and close the socket to save packets and syscalls.
5191 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5192 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5193
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5194 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
5195 goto wait_other_side;
5196
5197 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
5198 /* The server has not finished to respond, so we
5199 * don't want to move in order not to upset it.
5200 */
5201 goto wait_other_side;
5202 }
5203
5204 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
5205 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5206 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5207 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5208 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5209 goto wait_other_side;
5210 }
5211
5212 /* When we get here, it means that both the request and the
5213 * response have finished receiving. Depending on the connection
5214 * mode, we'll have to wait for the last bytes to leave in either
5215 * direction, and sometimes for a close to be effective.
5216 */
5217
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5218 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5219 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5220 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
5221 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5222 }
5223 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5224 /* Option forceclose is set, or either side wants to close,
5225 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5226 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5227 * once both states are CLOSED.
5228 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5229 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5230 channel_shutr_now(chn);
5231 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5232 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5233 }
5234 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5235 /* The last possible modes are keep-alive and tunnel. Tunnel mode
5236 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5237 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5238 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
5239 channel_auto_read(chn);
5240 txn->req.msg_state = HTTP_MSG_TUNNEL;
5241 chn->flags |= CF_NEVER_WAIT;
5242 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5243 }
5244
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5245 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5246 /* if we've just closed an output, let's switch */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5247 s->si[1].flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5248
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5249 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5250 txn->req.msg_state = HTTP_MSG_CLOSING;
5251 goto http_msg_closing;
5252 }
5253 else {
5254 txn->req.msg_state = HTTP_MSG_CLOSED;
5255 goto http_msg_closed;
5256 }
5257 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5258 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5259 }
5260
5261 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
5262 http_msg_closing:
5263 /* nothing else to forward, just waiting for the output buffer
5264 * to be empty and for the shutw_now to take effect.
5265 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5266 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5267 txn->req.msg_state = HTTP_MSG_CLOSED;
5268 goto http_msg_closed;
5269 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5270 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5271 txn->req.msg_state = HTTP_MSG_ERROR;
5272 goto wait_other_side;
5273 }
5274 }
5275
5276 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
5277 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5278 /* see above in MSG_DONE why we only do this in these states */
5279 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5280 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5281 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]5282 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5283 goto wait_other_side;
5284 }
5285
5286 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5287 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5288}
5289
5290
5291/* This function updates the response state machine according to the request
5292 * state machine and buffer flags. It returns 1 if it changes anything (flag
5293 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5294 * it is only used to find when a request/response couple is complete. Both
5295 * this function and its equivalent should loop until both return zero. It
5296 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5297 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5298int http_sync_res_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5299{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5300 struct channel *chn = &s->res;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5301 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5302 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5303 unsigned int old_state = txn->rsp.msg_state;
5304
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5305 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
5306 return 0;
5307
5308 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
5309 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5310 * still monitor the server connection for a possible close
5311 * while the request is being uploaded, so we don't disable
5312 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5313 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5314 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5315
5316 if (txn->req.msg_state == HTTP_MSG_ERROR)
5317 goto wait_other_side;
5318
5319 if (txn->req.msg_state < HTTP_MSG_DONE) {
5320 /* The client seems to still be sending data, probably
5321 * because we got an error response during an upload.
5322 * We have the choice of either breaking the connection
5323 * or letting it pass through. Let's do the later.
5324 */
5325 goto wait_other_side;
5326 }
5327
5328 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
5329 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5330 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5331 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5332 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5333 goto wait_other_side;
5334 }
5335
5336 /* When we get here, it means that both the request and the
5337 * response have finished receiving. Depending on the connection
5338 * mode, we'll have to wait for the last bytes to leave in either
5339 * direction, and sometimes for a close to be effective.
5340 */
5341
5342 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5343 /* Server-close mode : shut read and wait for the request
5344 * side to close its output buffer. The caller will detect
5345 * when we're in DONE and the other is in CLOSED and will
5346 * catch that for the final cleanup.
5347 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5348 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
5349 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5350 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5351 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5352 /* Option forceclose is set, or either side wants to close,
5353 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5354 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5355 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5356 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5357 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5358 channel_shutr_now(chn);
5359 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5360 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5361 }
5362 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5363 /* The last possible modes are keep-alive and tunnel. Tunnel will
5364 * need to forward remaining data. Keep-alive will need to monitor
5365 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5366 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5367 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5368 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5369 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
5370 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5371 }
5372
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5373 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5374 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5375 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5376 txn->rsp.msg_state = HTTP_MSG_CLOSING;
5377 goto http_msg_closing;
5378 }
5379 else {
5380 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5381 goto http_msg_closed;
5382 }
5383 }
5384 goto wait_other_side;
5385 }
5386
5387 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
5388 http_msg_closing:
5389 /* nothing else to forward, just waiting for the output buffer
5390 * to be empty and for the shutw_now to take effect.
5391 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5392 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5393 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5394 goto http_msg_closed;
5395 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5396 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5397 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5398 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5399 if (objt_server(s->target))
5400 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5401 goto wait_other_side;
5402 }
5403 }
5404
5405 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
5406 http_msg_closed:
5407 /* drop any pending data */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5408 channel_truncate(chn);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5409 channel_auto_close(chn);
5410 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5411 goto wait_other_side;
5412 }
5413
5414 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5415 /* We force the response to leave immediately if we're waiting for the
5416 * other side, since there is no pending shutdown to push it out.
5417 */
5418 if (!channel_is_empty(chn))
5419 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5420 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5421}
5422
5423
5424/* Resync the request and response state machines. Return 1 if either state
5425 * changes.
5426 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5427int http_resync_states(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5428{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5429 struct http_txn *txn = s->txn;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5430 int old_req_state = txn->req.msg_state;
5431 int old_res_state = txn->rsp.msg_state;
5432
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5433 http_sync_req_state(s);
5434 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5435 if (!http_sync_res_state(s))
5436 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5437 if (!http_sync_req_state(s))
5438 break;
5439 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]5440
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5441 /* OK, both state machines agree on a compatible state.
5442 * There are a few cases we're interested in :
5443 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
5444 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
5445 * directions, so let's simply disable both analysers.
5446 * - HTTP_MSG_CLOSED on the response only means we must abort the
5447 * request.
5448 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
5449 * with server-close mode means we've completed one request and we
5450 * must re-initialize the server connection.
5451 */
5452
5453 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
5454 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
5455 (txn->req.msg_state == HTTP_MSG_CLOSED &&
5456 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5457 s->req.analysers = 0;
5458 channel_auto_close(&s->req);
5459 channel_auto_read(&s->req);
5460 s->res.analysers = 0;
5461 channel_auto_close(&s->res);
5462 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5463 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5464 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5465 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->res.flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]5466 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5467 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5468 s->res.analysers = 0;
5469 channel_auto_close(&s->res);
5470 channel_auto_read(&s->res);
5471 s->req.analysers = 0;
5472 channel_abort(&s->req);
5473 channel_auto_close(&s->req);
5474 channel_auto_read(&s->req);
5475 channel_truncate(&s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5476 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5477 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
5478 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5479 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5480 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
5481 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
5482 /* server-close/keep-alive: terminate this transaction,
5483 * possibly killing the server connection and reinitialize
5484 * a fresh-new transaction.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5485 */
5486 http_end_txn_clean_session(s);
5487 }
5488
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5489 return txn->req.msg_state != old_req_state ||
5490 txn->rsp.msg_state != old_res_state;
5491}
5492
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5493/* This function is an analyser which forwards request body (including chunk
5494 * sizes if any). It is called as soon as we must forward, even if we forward
5495 * zero byte. The only situation where it must not be called is when we're in
5496 * tunnel mode and we want to forward till the close. It's used both to forward
5497 * remaining data and to resync after end of body. It expects the msg_state to
5498 * 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]5499 * 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]5500 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5501 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5502 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5503int http_request_forward_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5504{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5505 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5506 struct http_txn *txn = s->txn;
5507 struct http_msg *msg = &s->txn->req;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5508
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5509 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5510 return 0;
5511
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5512 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]5513 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5514 /* Output closed while we were sending data. We must abort and
5515 * wake the other side up.
5516 */
5517 msg->msg_state = HTTP_MSG_ERROR;
5518 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5519 return 1;
5520 }
5521
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5522 /* Note that we don't have to send 100-continue back because we don't
5523 * need the data to complete our job, and it's up to the server to
5524 * decide whether to return 100, 417 or anything else in return of
5525 * an "Expect: 100-continue" header.
5526 */
5527
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]5528 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5529 /* we have msg->sov which points to the first byte of message
5530 * body, and req->buf.p still points to the beginning of the
5531 * message. We forward the headers now, as we don't need them
5532 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5533 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5534 b_adv(req->buf, msg->sov);
5535 msg->next -= msg->sov;
5536 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5537
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5538 /* The previous analysers guarantee that the state is somewhere
5539 * between MSG_BODY and the first MSG_DATA. So msg->sol and
5540 * msg->next are always correct.
5541 */
5542 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
5543 if (msg->flags & HTTP_MSGF_TE_CHNK)
5544 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
5545 else
5546 msg->msg_state = HTTP_MSG_DATA;
5547 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5548 }
5549
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5550 /* Some post-connect processing might want us to refrain from starting to
5551 * forward data. Currently, the only reason for this is "balance url_param"
5552 * whichs need to parse/process the request after we've enabled forwarding.
5553 */
5554 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5555 if (!(s->res.flags & CF_READ_ATTACHED)) {
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5556 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +0200[diff] [blame]5557 req->flags |= CF_WAKE_CONNECT;
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5558 goto missing_data;
5559 }
5560 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5561 }
5562
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5563 /* in most states, we should abort in case of early close */
5564 channel_auto_close(req);
5565
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5566 if (req->to_forward) {
5567 /* We can't process the buffer's contents yet */
5568 req->flags |= CF_WAKE_WRITE;
5569 goto missing_data;
5570 }
5571
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5572 while (1) {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5573 if (msg->msg_state == HTTP_MSG_DATA) {
5574 /* must still forward */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5575 /* we may have some pending data starting at req->buf->p */
5576 if (msg->chunk_len > req->buf->i - msg->next) {
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5577 req->flags |= CF_WAKE_WRITE;
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5578 goto missing_data;
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5579 }
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5580 msg->next += msg->chunk_len;
5581 msg->chunk_len = 0;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5582
5583 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5584 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5585 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5586 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5587 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5588 }
5589 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5590 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5591 * set ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5592 * TRAILERS state.
5593 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5594 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5595
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5596 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5597 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5598 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5599 stream_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5600 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5601 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]5602 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5603 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5604 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5605 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5606 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5607 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5608 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5609
5610 if (ret == 0)
5611 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5612 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5613 stream_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5614 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5615 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]5616 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5617 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5618 /* we're in MSG_CHUNK_SIZE now */
5619 }
5620 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5621 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5622
5623 if (ret == 0)
5624 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5625 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5626 stream_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5627 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5628 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]5629 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5630 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5631 /* we're in HTTP_MSG_DONE now */
5632 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5633 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5634 int old_state = msg->msg_state;
5635
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5636 /* other states, DONE...TUNNEL */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5637
5638 /* we may have some pending data starting at req->buf->p
5639 * such as last chunk of data or trailers.
5640 */
5641 b_adv(req->buf, msg->next);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5642 if (unlikely(!(s->req.flags & CF_WROTE_DATA)))
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]5643 msg->sov -= msg->next;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5644 msg->next = 0;
5645
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5646 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5647 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5648 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5649 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5650 if (http_resync_states(s)) {
5651 /* some state changes occurred, maybe the analyser
5652 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]5653 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5654 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5655 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5656 /* request errors are most likely due to
5657 * the server aborting the transfer.
5658 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5659 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5660 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5661 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5662 http_capture_bad_message(&sess->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5663 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5664 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5665 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5666 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5667
5668 /* If "option abortonclose" is set on the backend, we
5669 * want to monitor the client's connection and forward
5670 * any shutdown notification to the server, which will
5671 * decide whether to close or to go on processing the
5672 * request.
5673 */
5674 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5675 channel_auto_read(req);
5676 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5677 }
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5678 else if (s->txn->meth == HTTP_METH_POST) {
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5679 /* POST requests may require to read extra CRLF
5680 * sent by broken browsers and which could cause
5681 * an RST to be sent upon close on some systems
5682 * (eg: Linux).
5683 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5684 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5685 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5686
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5687 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5688 }
5689 }
5690
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5691 missing_data:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5692 /* we may have some pending data starting at req->buf->p */
5693 b_adv(req->buf, msg->next);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5694 if (unlikely(!(s->req.flags & CF_WROTE_DATA)))
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]5695 msg->sov -= msg->next + MIN(msg->chunk_len, req->buf->i);
5696
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5697 msg->next = 0;
5698 msg->chunk_len -= channel_forward(req, msg->chunk_len);
5699
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5700 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5701 if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5702 if (!(s->flags & SF_ERR_MASK))
5703 s->flags |= SF_ERR_CLICL;
5704 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5705 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5706 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5707 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5708 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5709 }
5710
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5711 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5712 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5713 if (objt_server(s->target))
5714 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5715
5716 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5717 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5718
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5719 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5720 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5721 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5722
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5723 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5724 * 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]5725 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5726 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5727 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5728
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5729 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5730 * 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]5731 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5732 * modes are already handled by the stream sock layer. We must not do
5733 * this in content-length mode because it could present the MSG_MORE
5734 * flag with the last block of forwarded data, which would cause an
5735 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5736 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5737 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5738 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5739
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5740 return 0;
5741
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5742 return_bad_req: /* let's centralize all bad requests */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5743 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5744 if (sess->listener->counters)
5745 sess->listener->counters->failed_req++;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5746
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5747 return_bad_req_stats_ok:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5748 /* we may have some pending data starting at req->buf->p */
5749 b_adv(req->buf, msg->next);
5750 msg->next = 0;
5751
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5752 txn->req.msg_state = HTTP_MSG_ERROR;
5753 if (txn->status) {
5754 /* Note: we don't send any error if some data were already sent */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5755 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5756 } else {
5757 txn->status = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5758 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5759 }
5760 req->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5761 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]5762
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5763 if (!(s->flags & SF_ERR_MASK))
5764 s->flags |= SF_ERR_PRXCOND;
5765 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5766 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5767 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5768 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5769 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5770 }
5771 return 0;
5772
5773 aborted_xfer:
5774 txn->req.msg_state = HTTP_MSG_ERROR;
5775 if (txn->status) {
5776 /* Note: we don't send any error if some data were already sent */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5777 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5778 } else {
5779 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5780 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5781 }
5782 req->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5783 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]5784
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5785 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5786 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5787 if (objt_server(s->target))
5788 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5789
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5790 if (!(s->flags & SF_ERR_MASK))
5791 s->flags |= SF_ERR_SRVCL;
5792 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5793 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5794 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5795 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5796 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5797 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5798 return 0;
5799}
5800
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5801/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5802 * processing can continue on next analysers, or zero if it either needs more
5803 * data or wants to immediately abort the response (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5804 * 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]5805 * when it has nothing left to do, and may remove any analyser when it wants to
5806 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5807 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5808int http_wait_for_response(struct stream *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5809{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5810 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5811 struct http_txn *txn = s->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5812 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5813 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5814 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5815 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5816 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5817
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5818 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]5819 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5820 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5821 rep,
5822 rep->rex, rep->wex,
5823 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5824 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5825 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5826
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5827 /*
5828 * Now parse the partial (or complete) lines.
5829 * We will check the response syntax, and also join multi-line
5830 * headers. An index of all the lines will be elaborated while
5831 * parsing.
5832 *
5833 * For the parsing, we use a 28 states FSM.
5834 *
5835 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5836 * rep->buf->p = beginning of response
5837 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5838 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5839 * msg->eol = end of current header or line (LF or CRLF)
5840 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5841 */
5842
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5843 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5844 /* There's a protected area at the end of the buffer for rewriting
5845 * purposes. We don't want to start to parse the request if the
5846 * protected area is affected, because we may have to move processed
5847 * data later, which is much more complicated.
5848 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5849 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]5850 if (unlikely(!channel_is_rewritable(rep))) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5851 /* some data has still not left the buffer, wake us once that's done */
5852 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5853 goto abort_response;
5854 channel_dont_close(rep);
5855 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5856 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5857 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5858 }
5859
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5860 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5861 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5862 buffer_slow_realign(rep->buf);
5863
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5864 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5865 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5866 }
5867
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5868 /* 1: we might have to print this header in debug mode */
5869 if (unlikely((global.mode & MODE_DEBUG) &&
5870 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]5871 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5872 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5873
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5874 sol = rep->buf->p;
5875 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5876 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5877
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5878 sol += hdr_idx_first_pos(&txn->hdr_idx);
5879 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5880
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5881 while (cur_idx) {
5882 eol = sol + txn->hdr_idx.v[cur_idx].len;
5883 debug_hdr("srvhdr", s, sol, eol);
5884 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5885 cur_idx = txn->hdr_idx.v[cur_idx].next;
5886 }
5887 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5888
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5889 /*
5890 * Now we quickly check if we have found a full valid response.
5891 * If not so, we check the FD and buffer states before leaving.
5892 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5893 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5894 * responses are checked first.
5895 *
5896 * Depending on whether the client is still there or not, we
5897 * may send an error response back or not. Note that normally
5898 * we should only check for HTTP status there, and check I/O
5899 * errors somewhere else.
5900 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5901
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5902 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5903 /* Invalid response */
5904 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5905 /* we detected a parsing error. We want to archive this response
5906 * in the dedicated proxy area for later troubleshooting.
5907 */
5908 hdr_response_bad:
5909 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5910 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]5911
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5912 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5913 if (objt_server(s->target)) {
5914 objt_server(s->target)->counters.failed_resp++;
5915 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5916 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5917 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5918 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5919 rep->analysers = 0;
5920 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5921 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5922 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5923 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5924
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5925 if (!(s->flags & SF_ERR_MASK))
5926 s->flags |= SF_ERR_PRXCOND;
5927 if (!(s->flags & SF_FINST_MASK))
5928 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5929
5930 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5931 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5932
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5933 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5934 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5935 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5936 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5937 goto hdr_response_bad;
5938 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5939
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5940 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5941 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5942 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5943 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]5944 else if (txn->flags & TX_NOT_FIRST)
5945 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5946
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5947 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5948 if (objt_server(s->target)) {
5949 objt_server(s->target)->counters.failed_resp++;
5950 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5951 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5952
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5953 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5954 rep->analysers = 0;
5955 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5956 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5957 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5958 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5959
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5960 if (!(s->flags & SF_ERR_MASK))
5961 s->flags |= SF_ERR_SRVCL;
5962 if (!(s->flags & SF_FINST_MASK))
5963 s->flags |= SF_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5964 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5965 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5966
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +0200[diff] [blame]5967 /* read timeout : return a 504 to the client. */
5968 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5969 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5970 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]5971 else if (txn->flags & TX_NOT_FIRST)
5972 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5973
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5974 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5975 if (objt_server(s->target)) {
5976 objt_server(s->target)->counters.failed_resp++;
5977 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5978 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5979
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5980 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5981 rep->analysers = 0;
5982 txn->status = 504;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5983 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5984 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5985 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5986
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5987 if (!(s->flags & SF_ERR_MASK))
5988 s->flags |= SF_ERR_SRVTO;
5989 if (!(s->flags & SF_FINST_MASK))
5990 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5991 return 0;
5992 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5993
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5994 /* client abort with an abortonclose */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5995 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]5996 sess->fe->fe_counters.cli_aborts++;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5997 s->be->be_counters.cli_aborts++;
5998 if (objt_server(s->target))
5999 objt_server(s->target)->counters.cli_aborts++;
6000
6001 rep->analysers = 0;
6002 channel_auto_close(rep);
6003
6004 txn->status = 400;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6005 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6006 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6007
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6008 if (!(s->flags & SF_ERR_MASK))
6009 s->flags |= SF_ERR_CLICL;
6010 if (!(s->flags & SF_FINST_MASK))
6011 s->flags |= SF_FINST_H;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6012
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6013 /* process_stream() will take care of the error */
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6014 return 0;
6015 }
6016
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]6017 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6018 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]6019 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6020 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]6021 else if (txn->flags & TX_NOT_FIRST)
6022 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6023
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6024 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6025 if (objt_server(s->target)) {
6026 objt_server(s->target)->counters.failed_resp++;
6027 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6028 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6029
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6030 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6031 rep->analysers = 0;
6032 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6033 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6034 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6035 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6036
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6037 if (!(s->flags & SF_ERR_MASK))
6038 s->flags |= SF_ERR_SRVCL;
6039 if (!(s->flags & SF_FINST_MASK))
6040 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6041 return 0;
6042 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]6043
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6044 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6045 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6046 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6047 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]6048 else if (txn->flags & TX_NOT_FIRST)
6049 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]6050
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6051 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6052 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6053 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6054
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6055 if (!(s->flags & SF_ERR_MASK))
6056 s->flags |= SF_ERR_CLICL;
6057 if (!(s->flags & SF_FINST_MASK))
6058 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6059
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6060 /* process_stream() will take care of the error */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6061 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6062 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6063
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6064 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]6065 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6066 return 0;
6067 }
6068
6069 /* More interesting part now : we know that we have a complete
6070 * response which at least looks like HTTP. We have an indicator
6071 * of each header's length, so we can parse them quickly.
6072 */
6073
6074 if (unlikely(msg->err_pos >= 0))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6075 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]6076
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6077 /*
6078 * 1: get the status code
6079 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6080 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6081 if (n < 1 || n > 5)
6082 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6083 /* when the client triggers a 4xx from the server, it's most often due
6084 * to a missing object or permission. These events should be tracked
6085 * because if they happen often, it may indicate a brute force or a
6086 * vulnerability scan.
6087 */
6088 if (n == 4)
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6089 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6090
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6091 if (objt_server(s->target))
6092 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6093
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]6094 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
6095 * exactly one digit "." one digit. This check may be disabled using
6096 * option accept-invalid-http-response.
6097 */
6098 if (!(s->be->options2 & PR_O2_RSPBUG_OK)) {
6099 if (msg->sl.st.v_l != 8) {
6100 msg->err_pos = 0;
6101 goto hdr_response_bad;
6102 }
6103
6104 if (rep->buf->p[4] != '/' ||
6105 !isdigit((unsigned char)rep->buf->p[5]) ||
6106 rep->buf->p[6] != '.' ||
6107 !isdigit((unsigned char)rep->buf->p[7])) {
6108 msg->err_pos = 4;
6109 goto hdr_response_bad;
6110 }
6111 }
6112
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6113 /* check if the response is HTTP/1.1 or above */
6114 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6115 ((rep->buf->p[5] > '1') ||
6116 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6117 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6118
6119 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]6120 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]6121
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6122 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6123 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6124
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6125 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]6126
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]6127 /* Adjust server's health based on status code. Note: status codes 501
6128 * and 505 are triggered on demand by client request, so we must not
6129 * count them as server failures.
6130 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6131 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6132 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6133 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6134 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6135 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6136 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6137
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6138 /*
6139 * 2: check for cacheability.
6140 */
6141
6142 switch (txn->status) {
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]6143 case 100:
6144 /*
6145 * We may be facing a 100-continue response, in which case this
6146 * is not the right response, and we're waiting for the next one.
6147 * Let's allow this response to go to the client and wait for the
6148 * next one.
6149 */
6150 hdr_idx_init(&txn->hdr_idx);
6151 msg->next -= channel_forward(rep, msg->next);
6152 msg->msg_state = HTTP_MSG_RPBEFORE;
6153 txn->status = 0;
6154 s->logs.t_data = -1; /* was not a response yet */
6155 goto next_one;
6156
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6157 case 200:
6158 case 203:
6159 case 206:
6160 case 300:
6161 case 301:
6162 case 410:
6163 /* RFC2616 @13.4:
6164 * "A response received with a status code of
6165 * 200, 203, 206, 300, 301 or 410 MAY be stored
6166 * by a cache (...) unless a cache-control
6167 * directive prohibits caching."
6168 *
6169 * RFC2616 @9.5: POST method :
6170 * "Responses to this method are not cacheable,
6171 * unless the response includes appropriate
6172 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6173 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6174 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6175 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6176 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
6177 break;
6178 default:
6179 break;
6180 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6181
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6182 /*
6183 * 3: we may need to capture headers
6184 */
6185 s->logs.logwait &= ~LW_RESP;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6186 if (unlikely((s->logs.logwait & LW_RSPHDR) && s->res_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6187 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6188 s->res_cap, sess->fe->rsp_cap);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6189
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6190 /* 4: determine the transfer-length according to RFC2616 #4.4, updated
6191 * by RFC7230#3.3.3 :
6192 *
6193 * The length of a message body is determined by one of the following
6194 * (in order of precedence):
6195 *
6196 * 1. Any response to a HEAD request and any response with a 1xx
6197 * (Informational), 204 (No Content), or 304 (Not Modified) status
6198 * code is always terminated by the first empty line after the
6199 * header fields, regardless of the header fields present in the
6200 * message, and thus cannot contain a message body.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6201 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6202 * 2. Any 2xx (Successful) response to a CONNECT request implies that
6203 * the connection will become a tunnel immediately after the empty
6204 * line that concludes the header fields. A client MUST ignore any
6205 * Content-Length or Transfer-Encoding header fields received in
6206 * such a message.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6207 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6208 * 3. If a Transfer-Encoding header field is present and the chunked
6209 * transfer coding (Section 4.1) is the final encoding, the message
6210 * body length is determined by reading and decoding the chunked
6211 * data until the transfer coding indicates the data is complete.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6212 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6213 * If a Transfer-Encoding header field is present in a response and
6214 * the chunked transfer coding is not the final encoding, the
6215 * message body length is determined by reading the connection until
6216 * it is closed by the server. If a Transfer-Encoding header field
6217 * is present in a request and the chunked transfer coding is not
6218 * the final encoding, the message body length cannot be determined
6219 * reliably; the server MUST respond with the 400 (Bad Request)
6220 * status code and then close the connection.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6221 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6222 * If a message is received with both a Transfer-Encoding and a
6223 * Content-Length header field, the Transfer-Encoding overrides the
6224 * Content-Length. Such a message might indicate an attempt to
6225 * perform request smuggling (Section 9.5) or response splitting
6226 * (Section 9.4) and ought to be handled as an error. A sender MUST
6227 * remove the received Content-Length field prior to forwarding such
6228 * a message downstream.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6229 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6230 * 4. If a message is received without Transfer-Encoding and with
6231 * either multiple Content-Length header fields having differing
6232 * field-values or a single Content-Length header field having an
6233 * invalid value, then the message framing is invalid and the
6234 * recipient MUST treat it as an unrecoverable error. If this is a
6235 * request message, the server MUST respond with a 400 (Bad Request)
6236 * status code and then close the connection. If this is a response
6237 * message received by a proxy, the proxy MUST close the connection
6238 * to the server, discard the received response, and send a 502 (Bad
6239 * Gateway) response to the client. If this is a response message
6240 * received by a user agent, the user agent MUST close the
6241 * connection to the server and discard the received response.
6242 *
6243 * 5. If a valid Content-Length header field is present without
6244 * Transfer-Encoding, its decimal value defines the expected message
6245 * body length in octets. If the sender closes the connection or
6246 * the recipient times out before the indicated number of octets are
6247 * received, the recipient MUST consider the message to be
6248 * incomplete and close the connection.
6249 *
6250 * 6. If this is a request message and none of the above are true, then
6251 * the message body length is zero (no message body is present).
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6252 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6253 * 7. Otherwise, this is a response message without a declared message
6254 * body length, so the message body length is determined by the
6255 * number of octets received prior to the server closing the
6256 * connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6257 */
6258
6259 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6260 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6261 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6262 * FIXME: should we parse anyway and return an error on chunked encoding ?
6263 */
6264 if (txn->meth == HTTP_METH_HEAD ||
6265 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6266 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6267 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]6268 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6269 goto skip_content_length;
6270 }
6271
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6272 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6273 ctx.idx = 0;
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]6274 while (http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6275 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6276 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
6277 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6278 /* bad transfer-encoding (chunked followed by something else) */
6279 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6280 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6281 break;
6282 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6283 }
6284
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6285 /* Chunked responses must have their content-length removed */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6286 ctx.idx = 0;
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6287 if (use_close_only || (msg->flags & HTTP_MSGF_TE_CHNK)) {
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6288 while (http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx))
6289 http_remove_header2(msg, &txn->hdr_idx, &ctx);
6290 }
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6291 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]6292 signed long long cl;
6293
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6294 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6295 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6296 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6297 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6298
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6299 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6300 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6301 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6302 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6303
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6304 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6305 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6306 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6307 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6308
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6309 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6310 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6311 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6312 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6313
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6314 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6315 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6316 }
6317
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6318 if (sess->fe->comp || s->be->comp)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6319 select_compression_response_header(s, rep->buf);
6320
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6321skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6322 /* Now we have to check if we need to modify the Connection header.
6323 * This is more difficult on the response than it is on the request,
6324 * because we can have two different HTTP versions and we don't know
6325 * how the client will interprete a response. For instance, let's say
6326 * that the client sends a keep-alive request in HTTP/1.0 and gets an
6327 * HTTP/1.1 response without any header. Maybe it will bound itself to
6328 * HTTP/1.0 because it only knows about it, and will consider the lack
6329 * of header as a close, or maybe it knows HTTP/1.1 and can consider
6330 * the lack of header as a keep-alive. Thus we will use two flags
6331 * indicating how a request MAY be understood by the client. In case
6332 * of multiple possibilities, we'll fix the header to be explicit. If
6333 * ambiguous cases such as both close and keepalive are seen, then we
6334 * will fall back to explicit close. Note that we won't take risks with
6335 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6336 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6337 */
6338
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6339 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
6340 txn->status == 101)) {
6341 /* Either we've established an explicit tunnel, or we're
6342 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6343 * to understand the next protocols. We have to switch to tunnel
6344 * mode, so that we transfer the request and responses then let
6345 * this protocol pass unmodified. When we later implement specific
6346 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6347 * header which contains information about that protocol for
6348 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6349 */
6350 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
6351 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6352 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
6353 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6354 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6355 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6356 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6357
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6358 /* this situation happens when combining pretend-keepalive with httpclose. */
6359 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6360 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6361 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6362 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
6363
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6364 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6365 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6366 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
6367 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6368
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6369 /* now adjust header transformations depending on current state */
6370 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
6371 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
6372 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6373 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6374 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6375 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6376 else { /* SCL / KAL */
6377 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6378 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6379 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6380 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6381
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6382 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6383 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6384
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6385 /* Some keep-alive responses are converted to Server-close if
6386 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6387 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6388 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
6389 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6390 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6391 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6392 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6393 }
6394
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6395 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6396 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6397
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6398 /* end of job, return OK */
6399 rep->analysers &= ~an_bit;
6400 rep->analyse_exp = TICK_ETERNITY;
6401 channel_auto_close(rep);
6402 return 1;
6403
6404 abort_keep_alive:
6405 /* A keep-alive request to the server failed on a network error.
6406 * The client is required to retry. We need to close without returning
6407 * any other information so that the client retries.
6408 */
6409 txn->status = 0;
6410 rep->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6411 s->req.analysers = 0;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6412 channel_auto_close(rep);
6413 s->logs.logwait = 0;
6414 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6415 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6416 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6417 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6418 return 0;
6419}
6420
6421/* This function performs all the processing enabled for the current response.
6422 * It normally returns 1 unless it wants to break. It relies on buffers flags,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6423 * and updates s->res.analysers. It might make sense to explode it into several
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6424 * other functions. It works like process_request (see indications above).
6425 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6426int 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]6427{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6428 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6429 struct http_txn *txn = s->txn;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6430 struct http_msg *msg = &txn->rsp;
6431 struct proxy *cur_proxy;
6432 struct cond_wordlist *wl;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]6433 enum rule_result ret = HTTP_RULE_RES_CONT;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6434
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6435 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]6436 now_ms, __FUNCTION__,
6437 s,
6438 rep,
6439 rep->rex, rep->wex,
6440 rep->flags,
6441 rep->buf->i,
6442 rep->analysers);
6443
6444 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
6445 return 0;
6446
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6447 /* The stats applet needs to adjust the Connection header but we don't
6448 * apply any filter there.
6449 */
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6450 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
6451 rep->analysers &= ~an_bit;
6452 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6453 goto skip_filters;
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6454 }
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6455
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6456 /*
6457 * We will have to evaluate the filters.
6458 * As opposed to version 1.2, now they will be evaluated in the
6459 * filters order and not in the header order. This means that
6460 * each filter has to be validated among all headers.
6461 *
6462 * Filters are tried with ->be first, then with ->fe if it is
6463 * different from ->be.
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6464 *
6465 * Maybe we are in resume condiion. In this case I choose the
6466 * "struct proxy" which contains the rule list matching the resume
6467 * pointer. If none of theses "struct proxy" match, I initialise
6468 * the process with the first one.
6469 *
6470 * In fact, I check only correspondance betwwen the current list
6471 * pointer and the ->fe rule list. If it doesn't match, I initialize
6472 * the loop with the ->be.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6473 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6474 if (s->current_rule_list == &sess->fe->http_res_rules)
6475 cur_proxy = sess->fe;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6476 else
6477 cur_proxy = s->be;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6478 while (1) {
6479 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6480
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6481 /* evaluate http-response rules */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]6482 if (ret == HTTP_RULE_RES_CONT)
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]6483 ret = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, s);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]6484
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6485 /* we need to be called again. */
6486 if (ret == HTTP_RULE_RES_YIELD) {
6487 channel_dont_close(rep);
6488 return 0;
6489 }
6490
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6491 /* try headers filters */
6492 if (rule_set->rsp_exp != NULL) {
6493 if (apply_filters_to_response(s, rep, rule_set) < 0) {
6494 return_bad_resp:
6495 if (objt_server(s->target)) {
6496 objt_server(s->target)->counters.failed_resp++;
6497 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6498 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6499 s->be->be_counters.failed_resp++;
6500 return_srv_prx_502:
6501 rep->analysers = 0;
6502 txn->status = 502;
6503 s->logs.t_data = -1; /* was not a valid response */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6504 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6505 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6506 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6507 if (!(s->flags & SF_ERR_MASK))
6508 s->flags |= SF_ERR_PRXCOND;
6509 if (!(s->flags & SF_FINST_MASK))
6510 s->flags |= SF_FINST_H;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6511 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6512 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6513 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6514
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6515 /* has the response been denied ? */
6516 if (txn->flags & TX_SVDENY) {
6517 if (objt_server(s->target))
6518 objt_server(s->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6519
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6520 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6521 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6522 if (sess->listener->counters)
6523 sess->listener->counters->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6524
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6525 goto return_srv_prx_502;
6526 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]6527
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6528 /* add response headers from the rule sets in the same order */
6529 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6530 if (txn->status < 200 && txn->status != 101)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6531 break;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6532 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]6533 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]6534 ret = acl_pass(ret);
6535 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
6536 ret = !ret;
6537 if (!ret)
6538 continue;
6539 }
6540 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
6541 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6542 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6543
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6544 /* check whether we're already working on the frontend */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6545 if (cur_proxy == sess->fe)
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6546 break;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6547 cur_proxy = sess->fe;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6548 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6549
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6550 /* After this point, this anayzer can't return yield, so we can
6551 * remove the bit corresponding to this analyzer from the list.
6552 *
6553 * Note that the intermediate returns and goto found previously
6554 * reset the analyzers.
6555 */
6556 rep->analysers &= ~an_bit;
6557 rep->analyse_exp = TICK_ETERNITY;
6558
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6559 /* OK that's all we can do for 1xx responses */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6560 if (unlikely(txn->status < 200 && txn->status != 101))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6561 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6562
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6563 /*
6564 * Now check for a server cookie.
6565 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6566 if (s->be->cookie_name || s->be->appsession_name || sess->fe->capture_name ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6567 (s->be->options & PR_O_CHK_CACHE))
6568 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6569
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6570 /*
6571 * Check for cache-control or pragma headers if required.
6572 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6573 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]6574 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6575
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6576 /*
6577 * Add server cookie in the response if needed
6578 */
6579 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
6580 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6581 (!(s->flags & SF_DIRECT) ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6582 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
6583 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
6584 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
6585 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
6586 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6587 !(s->flags & SF_IGNORE_PRST)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6588 /* the server is known, it's not the one the client requested, or the
6589 * cookie's last seen date needs to be refreshed. We have to
6590 * insert a set-cookie here, except if we want to insert only on POST
6591 * requests and this one isn't. Note that servers which don't have cookies
6592 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6593 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6594 if (!objt_server(s->target)->cookie) {
6595 chunk_printf(&trash,
6596 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
6597 s->be->cookie_name);
6598 }
6599 else {
6600 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]6601
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6602 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
6603 /* emit last_date, which is mandatory */
6604 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6605 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6606 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6607
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6608 if (s->be->cookie_maxlife) {
6609 /* emit first_date, which is either the original one or
6610 * the current date.
6611 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6612 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6613 s30tob64(txn->cookie_first_date ?
6614 txn->cookie_first_date >> 2 :
6615 (date.tv_sec+3) >> 2, trash.str + trash.len);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6616 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6617 }
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6618 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6619 chunk_appendf(&trash, "; path=/");
6620 }
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6621
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6622 if (s->be->cookie_domain)
6623 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6624
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6625 if (s->be->ck_opts & PR_CK_HTTPONLY)
6626 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6627
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6628 if (s->be->ck_opts & PR_CK_SECURE)
6629 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6630
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6631 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
6632 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6633
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6634 txn->flags &= ~TX_SCK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6635 if (objt_server(s->target)->cookie && (s->flags & SF_DIRECT))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6636 /* the server did not change, only the date was updated */
6637 txn->flags |= TX_SCK_UPDATED;
6638 else
6639 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6640
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6641 /* Here, we will tell an eventual cache on the client side that we don't
6642 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6643 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6644 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6645 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6646 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6647
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6648 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6649
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6650 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
6651 "Cache-control: private", 22) < 0))
6652 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6653 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6654 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6655
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6656 /*
6657 * Check if result will be cacheable with a cookie.
6658 * We'll block the response if security checks have caught
6659 * nasty things such as a cacheable cookie.
6660 */
6661 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6662 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
6663 (s->be->options & PR_O_CHK_CACHE)) {
6664 /* we're in presence of a cacheable response containing
6665 * a set-cookie header. We'll block it as requested by
6666 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6667 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6668 if (objt_server(s->target))
6669 objt_server(s->target)->counters.failed_secu++;
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6670
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6671 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6672 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6673 if (sess->listener->counters)
6674 sess->listener->counters->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6675
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6676 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
6677 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6678 send_log(s->be, LOG_ALERT,
6679 "Blocking cacheable cookie in response from instance %s, server %s.\n",
6680 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6681 goto return_srv_prx_502;
6682 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6683
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6684 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6685 /*
6686 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
6687 * If an "Upgrade" token is found, the header is left untouched in order
6688 * 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]6689 * if anything but "Upgrade" is present in the Connection header. We don't
6690 * want to touch any 101 response either since it's switching to another
6691 * protocol.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6692 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6693 if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) &&
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6694 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6695 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6696 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
6697 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6698
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6699 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6700 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6701 /* we want a keep-alive response here. Keep-alive header
6702 * required if either side is not 1.1.
6703 */
6704 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
6705 want_flags |= TX_CON_KAL_SET;
6706 }
6707 else {
6708 /* we want a close response here. Close header required if
6709 * the server is 1.1, regardless of the client.
6710 */
6711 if (msg->flags & HTTP_MSGF_VER_11)
6712 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6713 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6714
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6715 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
6716 http_change_connection_header(txn, msg, want_flags);
6717 }
6718
6719 skip_header_mangling:
6720 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
6721 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
6722 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6723
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6724 /* if the user wants to log as soon as possible, without counting
6725 * bytes from the server, then this is the right moment. We have
6726 * to temporarily assign bytes_out to log what we currently have.
6727 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6728 if (!LIST_ISEMPTY(&sess->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6729 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
6730 s->logs.bytes_out = txn->rsp.eoh;
6731 s->do_log(s);
6732 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6733 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6734 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6735}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6736
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6737/* This function is an analyser which forwards response body (including chunk
6738 * sizes if any). It is called as soon as we must forward, even if we forward
6739 * zero byte. The only situation where it must not be called is when we're in
6740 * tunnel mode and we want to forward till the close. It's used both to forward
6741 * remaining data and to resync after end of body. It expects the msg_state to
6742 * 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]6743 * 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]6744 *
6745 * It is capable of compressing response data both in content-length mode and
6746 * in chunked mode. The state machines follows different flows depending on
6747 * whether content-length and chunked modes are used, since there are no
6748 * trailers in content-length :
6749 *
6750 * chk-mode cl-mode
6751 * ,----- BODY -----.
6752 * / \
6753 * V size > 0 V chk-mode
6754 * .--> SIZE -------------> DATA -------------> CRLF
6755 * | | size == 0 | last byte |
6756 * | v final crlf v inspected |
6757 * | TRAILERS -----------> DONE |
6758 * | |
6759 * `----------------------------------------------'
6760 *
6761 * Compression only happens in the DATA state, and must be flushed in final
6762 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
6763 * is performed at once on final states for all bytes parsed, or when leaving
6764 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6765 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6766int http_response_forward_body(struct stream *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6767{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6768 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6769 struct http_txn *txn = s->txn;
6770 struct http_msg *msg = &s->txn->rsp;
Willy Tarreauf2f7d6b2014-11-24 11:55:08 +0100[diff] [blame]6771 static struct buffer *tmpbuf = &buf_empty;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6772 int compressing = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6773 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6774
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6775 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6776 return 0;
6777
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6778 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]6779 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6780 !s->req.analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6781 /* Output closed while we were sending data. We must abort and
6782 * wake the other side up.
6783 */
6784 msg->msg_state = HTTP_MSG_ERROR;
6785 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6786 return 1;
6787 }
6788
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6789 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6790 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6791
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]6792 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6793 /* we have msg->sov which points to the first byte of message
6794 * body, and res->buf.p still points to the beginning of the
6795 * message. We forward the headers now, as we don't need them
6796 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6797 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6798 b_adv(res->buf, msg->sov);
6799 msg->next -= msg->sov;
6800 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6801
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6802 /* The previous analysers guarantee that the state is somewhere
6803 * between MSG_BODY and the first MSG_DATA. So msg->sol and
6804 * msg->next are always correct.
6805 */
6806 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
6807 if (msg->flags & HTTP_MSGF_TE_CHNK)
6808 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
6809 else
6810 msg->msg_state = HTTP_MSG_DATA;
6811 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6812 }
6813
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6814 if (res->to_forward) {
6815 /* We can't process the buffer's contents yet */
6816 res->flags |= CF_WAKE_WRITE;
6817 goto missing_data;
6818 }
6819
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6820 if (unlikely(s->comp_algo != NULL) && msg->msg_state < HTTP_MSG_TRAILERS) {
6821 /* We need a compression buffer in the DATA state to put the
6822 * output of compressed data, and in CRLF state to let the
6823 * TRAILERS state finish the job of removing the trailing CRLF.
6824 */
Willy Tarreauf2f7d6b2014-11-24 11:55:08 +0100[diff] [blame]6825 if (unlikely(!tmpbuf->size)) {
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6826 /* this is the first time we need the compression buffer */
Willy Tarreaue583ea52014-11-24 11:30:16 +0100[diff] [blame]6827 if (b_alloc(&tmpbuf) == NULL)
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6828 goto aborted_xfer; /* no memory */
6829 }
6830
6831 ret = http_compression_buffer_init(s, res->buf, tmpbuf);
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6832 if (ret < 0) {
6833 res->flags |= CF_WAKE_WRITE;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6834 goto missing_data; /* not enough spaces in buffers */
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6835 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6836 compressing = 1;
6837 }
6838
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6839 while (1) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6840 switch (msg->msg_state - HTTP_MSG_DATA) {
6841 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6842 /* we may have some pending data starting at res->buf->p */
6843 if (unlikely(s->comp_algo)) {
Willy Tarreau7f2f8d52014-04-18 00:20:14 +0200[diff] [blame]6844 ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6845 if (ret < 0)
6846 goto aborted_xfer;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6847
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6848 if (msg->chunk_len) {
6849 /* input empty or output full */
6850 if (res->buf->i > msg->next)
6851 res->flags |= CF_WAKE_WRITE;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6852 goto missing_data;
6853 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6854 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6855 else {
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6856 if (msg->chunk_len > res->buf->i - msg->next) {
6857 /* output full */
6858 res->flags |= CF_WAKE_WRITE;
6859 goto missing_data;
6860 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6861 msg->next += msg->chunk_len;
6862 msg->chunk_len = 0;
6863 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6864
6865 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6866 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6867 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6868 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6869 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6870 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6871 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6872 /* fall through for HTTP_MSG_CHUNK_CRLF */
6873
6874 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
6875 /* we want the CRLF after the data */
6876
6877 ret = http_skip_chunk_crlf(msg);
6878 if (ret == 0)
6879 goto missing_data;
6880 else if (ret < 0) {
6881 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6882 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]6883 goto return_bad_res;
6884 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6885 /* we're in MSG_CHUNK_SIZE now, fall through */
6886
6887 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6888 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]6889 * set ->next to point to the body and switch to DATA or
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6890 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6891 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6892
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6893 ret = http_parse_chunk_size(msg);
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6894 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6895 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6896 else if (ret < 0) {
6897 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6898 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]6899 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6900 }
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]6901 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6902 break;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6903
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6904 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6905 if (unlikely(compressing)) {
6906 /* we need to flush output contents before syncing FSMs */
6907 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6908 compressing = 0;
6909 }
6910
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6911 ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6912 if (ret == 0)
6913 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6914 else if (ret < 0) {
6915 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6916 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_TRAILERS, sess->fe);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6917 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6918 }
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6919 /* we're in HTTP_MSG_DONE now, fall through */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6920
6921 default:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6922 /* other states, DONE...TUNNEL */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6923 if (unlikely(compressing)) {
6924 /* we need to flush output contents before syncing FSMs */
6925 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6926 compressing = 0;
6927 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6928
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6929 /* we may have some pending data starting at res->buf->p
6930 * such as a last chunk of data or trailers.
6931 */
6932 b_adv(res->buf, msg->next);
6933 msg->next = 0;
6934
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6935 ret = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6936 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6937 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6938 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6939 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]6940
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6941 if (http_resync_states(s)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6942 /* some state changes occurred, maybe the analyser
6943 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6944 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6945 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6946 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6947 /* response errors are most likely due to
6948 * the client aborting the transfer.
6949 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6950 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6951 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6952 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6953 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, sess->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6954 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6955 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6956 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6957 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6958 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6959 }
6960 }
6961
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6962 missing_data:
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6963 /* we may have some pending data starting at res->buf->p */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6964 if (unlikely(compressing)) {
6965 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6966 compressing = 0;
6967 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6968
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6969 if ((s->comp_algo == NULL || msg->msg_state >= HTTP_MSG_TRAILERS)) {
6970 b_adv(res->buf, msg->next);
6971 msg->next = 0;
6972 msg->chunk_len -= channel_forward(res, msg->chunk_len);
6973 }
6974
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6975 if (res->flags & CF_SHUTW)
6976 goto aborted_xfer;
6977
6978 /* stop waiting for data if the input is closed before the end. If the
6979 * client side was already closed, it means that the client has aborted,
6980 * so we don't want to count this as a server abort. Otherwise it's a
6981 * server abort.
6982 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6983 if (res->flags & CF_SHUTR) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6984 if ((s->req.flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6985 goto aborted_xfer;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6986 if (!(s->flags & SF_ERR_MASK))
6987 s->flags |= SF_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6988 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6989 if (objt_server(s->target))
6990 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6991 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6992 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6993
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6994 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6995 if (!s->req.analysers)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6996 goto return_bad_res;
6997
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6998 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6999 * 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]7000 * Similarly, with keep-alive on the client side, we don't want to forward a
7001 * close.
7002 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]7003 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7004 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
7005 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]7006 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7007
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7008 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7009 * 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]7010 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]7011 * modes are already handled by the stream sock layer. We must not do
7012 * this in content-length mode because it could present the MSG_MORE
7013 * flag with the last block of forwarded data, which would cause an
7014 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7015 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]7016 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7017 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7018
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7019 /* the stream handler will take care of timeouts and errors */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7020 return 0;
7021
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]7022 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]7023 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7024 if (objt_server(s->target))
7025 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7026
7027 return_bad_res_stats_ok:
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]7028 if (unlikely(compressing)) {
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]7029 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]7030 compressing = 0;
7031 }
7032
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]7033 /* we may have some pending data starting at res->buf->p */
7034 if (s->comp_algo == NULL) {
7035 b_adv(res->buf, msg->next);
7036 msg->next = 0;
7037 }
7038
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7039 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]7040 /* don't send any error message as we're in the body */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]7041 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7042 res->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7043 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]7044 if (objt_server(s->target))
7045 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7046
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7047 if (!(s->flags & SF_ERR_MASK))
7048 s->flags |= SF_ERR_PRXCOND;
7049 if (!(s->flags & SF_FINST_MASK))
7050 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7051 return 0;
7052
7053 aborted_xfer:
Willy Tarreau6fef8ae2014-04-22 21:22:06 +0200[diff] [blame]7054 if (unlikely(compressing)) {
7055 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
7056 compressing = 0;
7057 }
7058
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7059 txn->rsp.msg_state = HTTP_MSG_ERROR;
7060 /* don't send any error message as we're in the body */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]7061 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7062 res->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7063 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]7064
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7065 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]7066 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7067 if (objt_server(s->target))
7068 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7069
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7070 if (!(s->flags & SF_ERR_MASK))
7071 s->flags |= SF_ERR_CLICL;
7072 if (!(s->flags & SF_FINST_MASK))
7073 s->flags |= SF_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7074 return 0;
7075}
7076
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7077/* Iterate the same filter through all request headers.
7078 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7079 * Since it can manage the switch to another backend, it updates the per-proxy
7080 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7081 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7082int 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]7083{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7084 char *cur_ptr, *cur_end, *cur_next;
7085 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7086 struct http_txn *txn = s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7087 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7088 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]7089
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7090 last_hdr = 0;
7091
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7092 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7093 old_idx = 0;
7094
7095 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7096 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7097 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7098 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7099 (exp->action == ACT_ALLOW ||
7100 exp->action == ACT_DENY ||
7101 exp->action == ACT_TARPIT))
7102 return 0;
7103
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7104 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7105 if (!cur_idx)
7106 break;
7107
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7108 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7109 cur_ptr = cur_next;
7110 cur_end = cur_ptr + cur_hdr->len;
7111 cur_next = cur_end + cur_hdr->cr + 1;
7112
7113 /* Now we have one header between cur_ptr and cur_end,
7114 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7115 */
7116
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7117 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]7118 switch (exp->action) {
7119 case ACT_SETBE:
7120 /* It is not possible to jump a second time.
7121 * FIXME: should we return an HTTP/500 here so that
7122 * the admin knows there's a problem ?
7123 */
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]7124 if (s->be != strm_fe(s))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7125 break;
7126
7127 /* Swithing Proxy */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7128 stream_set_backend(s, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7129 last_hdr = 1;
7130 break;
7131
7132 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7133 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7134 last_hdr = 1;
7135 break;
7136
7137 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7138 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7139 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7140 break;
7141
7142 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7143 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7144 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7145 break;
7146
7147 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7148 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7149 if (trash.len < 0)
7150 return -1;
7151
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7152 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7153 /* FIXME: if the user adds a newline in the replacement, the
7154 * index will not be recalculated for now, and the new line
7155 * will not be counted as a new header.
7156 */
7157
7158 cur_end += delta;
7159 cur_next += delta;
7160 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7161 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7162 break;
7163
7164 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7165 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7166 cur_next += delta;
7167
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7168 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7169 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7170 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7171 cur_hdr->len = 0;
7172 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7173 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7174 break;
7175
7176 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7177 }
7178
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7179 /* keep the link from this header to next one in case of later
7180 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7181 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7182 old_idx = cur_idx;
7183 }
7184 return 0;
7185}
7186
7187
7188/* Apply the filter to the request line.
7189 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7190 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7191 * Since it can manage the switch to another backend, it updates the per-proxy
7192 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7193 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7194int apply_filter_to_req_line(struct stream *s, struct channel *req, struct hdr_exp *exp)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7195{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7196 char *cur_ptr, *cur_end;
7197 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7198 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7199 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7200
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7201 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7202 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7203 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7204 (exp->action == ACT_ALLOW ||
7205 exp->action == ACT_DENY ||
7206 exp->action == ACT_TARPIT))
7207 return 0;
7208 else if (exp->action == ACT_REMOVE)
7209 return 0;
7210
7211 done = 0;
7212
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7213 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7214 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7215
7216 /* Now we have the request line between cur_ptr and cur_end */
7217
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7218 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]7219 switch (exp->action) {
7220 case ACT_SETBE:
7221 /* It is not possible to jump a second time.
7222 * FIXME: should we return an HTTP/500 here so that
7223 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7224 */
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]7225 if (s->be != strm_fe(s))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7226 break;
7227
7228 /* Swithing Proxy */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7229 stream_set_backend(s, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7230 done = 1;
7231 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7232
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7233 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7234 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7235 done = 1;
7236 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7237
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7238 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7239 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7240 done = 1;
7241 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7242
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7243 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7244 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7245 done = 1;
7246 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7247
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7248 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7249 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7250 if (trash.len < 0)
7251 return -1;
7252
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7253 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7254 /* FIXME: if the user adds a newline in the replacement, the
7255 * index will not be recalculated for now, and the new line
7256 * will not be counted as a new header.
7257 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7258
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7259 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7260 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7261 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7262 HTTP_MSG_RQMETH,
7263 cur_ptr, cur_end + 1,
7264 NULL, NULL);
7265 if (unlikely(!cur_end))
7266 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7267
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7268 /* we have a full request and we know that we have either a CR
7269 * or an LF at <ptr>.
7270 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7271 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
7272 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]7273 /* there is no point trying this regex on headers */
7274 return 1;
7275 }
7276 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7277 return done;
7278}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]7279
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7280
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7281
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7282/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7283 * 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]7284 * 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]7285 * unparsable request. Since it can manage the switch to another backend, it
7286 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7287 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7288int apply_filters_to_request(struct stream *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7289{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7290 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7291 struct http_txn *txn = s->txn;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7292 struct hdr_exp *exp;
7293
7294 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7295 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7296
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7297 /*
7298 * The interleaving of transformations and verdicts
7299 * makes it difficult to decide to continue or stop
7300 * the evaluation.
7301 */
7302
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7303 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
7304 break;
7305
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7306 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7307 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7308 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7309 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7310
7311 /* if this filter had a condition, evaluate it now and skip to
7312 * next filter if the condition does not match.
7313 */
7314 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7315 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]7316 ret = acl_pass(ret);
7317 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7318 ret = !ret;
7319
7320 if (!ret)
7321 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7322 }
7323
7324 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7325 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7326 if (unlikely(ret < 0))
7327 return -1;
7328
7329 if (likely(ret == 0)) {
7330 /* The filter did not match the request, it can be
7331 * iterated through all headers.
7332 */
Willy Tarreau34d4c3c2015-01-30 20:58:58 +0100[diff] [blame]7333 if (unlikely(apply_filter_to_req_headers(s, req, exp) < 0))
7334 return -1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7335 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7336 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7337 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7338}
7339
7340
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7341
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7342/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7343 * Try to retrieve the server associated to the appsession.
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7344 * If the server is found, it's assigned to the stream.
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7345 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7346void manage_client_side_appsession(struct stream *s, const char *buf, int len) {
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7347 struct http_txn *txn = s->txn;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7348 appsess *asession = NULL;
7349 char *sessid_temp = NULL;
7350
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7351 if (len > s->be->appsession_len) {
7352 len = s->be->appsession_len;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7353 }
7354
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7355 if (s->be->options2 & PR_O2_AS_REQL) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7356 /* request-learn option is enabled : store the sessid in the stream for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7357 if (txn->sessid != NULL) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7358 /* free previously allocated memory as we don't need the stream id found in the URL anymore */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7359 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7360 }
7361
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7362 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7363 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7364 send_log(s->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7365 return;
7366 }
7367
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7368 memcpy(txn->sessid, buf, len);
7369 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7370 }
7371
7372 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
7373 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7374 send_log(s->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7375 return;
7376 }
7377
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7378 memcpy(sessid_temp, buf, len);
7379 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7380
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7381 asession = appsession_hash_lookup(&(s->be->htbl_proxy), sessid_temp);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7382 /* free previously allocated memory */
7383 pool_free2(apools.sessid, sessid_temp);
7384
7385 if (asession != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7386 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
7387 if (!(s->be->options2 & PR_O2_AS_REQL))
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7388 asession->request_count++;
7389
7390 if (asession->serverid != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7391 struct server *srv = s->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7392
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7393 while (srv) {
7394 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7395 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7396 (s->be->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7397 (s->flags & SF_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7398 /* we found the server and it's usable */
7399 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7400 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7401 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7402 s->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]7403
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7404 break;
7405 } else {
7406 txn->flags &= ~TX_CK_MASK;
7407 txn->flags |= TX_CK_DOWN;
7408 }
7409 }
7410 srv = srv->next;
7411 }
7412 }
7413 }
7414}
7415
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7416/* Find the end of a cookie value contained between <s> and <e>. It works the
7417 * same way as with headers above except that the semi-colon also ends a token.
7418 * See RFC2965 for more information. Note that it requires a valid header to
7419 * return a valid result.
7420 */
7421char *find_cookie_value_end(char *s, const char *e)
7422{
7423 int quoted, qdpair;
7424
7425 quoted = qdpair = 0;
7426 for (; s < e; s++) {
7427 if (qdpair) qdpair = 0;
7428 else if (quoted) {
7429 if (*s == '\\') qdpair = 1;
7430 else if (*s == '"') quoted = 0;
7431 }
7432 else if (*s == '"') quoted = 1;
7433 else if (*s == ',' || *s == ';') return s;
7434 }
7435 return s;
7436}
7437
7438/* Delete a value in a header between delimiters <from> and <next> in buffer
7439 * <buf>. The number of characters displaced is returned, and the pointer to
7440 * the first delimiter is updated if required. The function tries as much as
7441 * possible to respect the following principles :
7442 * - replace <from> delimiter by the <next> one unless <from> points to a
7443 * colon, in which case <next> is simply removed
7444 * - set exactly one space character after the new first delimiter, unless
7445 * there are not enough characters in the block being moved to do so.
7446 * - remove unneeded spaces before the previous delimiter and after the new
7447 * one.
7448 *
7449 * It is the caller's responsibility to ensure that :
7450 * - <from> points to a valid delimiter or the colon ;
7451 * - <next> points to a valid delimiter or the final CR/LF ;
7452 * - there are non-space chars before <from> ;
7453 * - there is a CR/LF at or after <next>.
7454 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]7455int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7456{
7457 char *prev = *from;
7458
7459 if (*prev == ':') {
7460 /* We're removing the first value, preserve the colon and add a
7461 * space if possible.
7462 */
7463 if (!http_is_crlf[(unsigned char)*next])
7464 next++;
7465 prev++;
7466 if (prev < next)
7467 *prev++ = ' ';
7468
7469 while (http_is_spht[(unsigned char)*next])
7470 next++;
7471 } else {
7472 /* Remove useless spaces before the old delimiter. */
7473 while (http_is_spht[(unsigned char)*(prev-1)])
7474 prev--;
7475 *from = prev;
7476
7477 /* copy the delimiter and if possible a space if we're
7478 * not at the end of the line.
7479 */
7480 if (!http_is_crlf[(unsigned char)*next]) {
7481 *prev++ = *next++;
7482 if (prev + 1 < next)
7483 *prev++ = ' ';
7484 while (http_is_spht[(unsigned char)*next])
7485 next++;
7486 }
7487 }
7488 return buffer_replace2(buf, prev, next, NULL, 0);
7489}
7490
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7491/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7492 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7493 * desirable to call it only when needed. This code is quite complex because
7494 * of the multiple very crappy and ambiguous syntaxes we have to support. it
7495 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7496 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7497void manage_client_side_cookies(struct stream *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7498{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7499 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7500 struct session *sess = s->sess;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7501 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7502 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7503 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
7504 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7505
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7506 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]7507 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7508 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7509
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7510 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7511 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7512 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7513
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7514 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7515 hdr_beg = hdr_next;
7516 hdr_end = hdr_beg + cur_hdr->len;
7517 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7518
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7519 /* We have one full header between hdr_beg and hdr_end, and the
7520 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7521 * "Cookie:" headers.
7522 */
7523
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7524 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7525 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7526 old_idx = cur_idx;
7527 continue;
7528 }
7529
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7530 del_from = NULL; /* nothing to be deleted */
7531 preserve_hdr = 0; /* assume we may kill the whole header */
7532
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7533 /* Now look for cookies. Conforming to RFC2109, we have to support
7534 * attributes whose name begin with a '$', and associate them with
7535 * the right cookie, if we want to delete this cookie.
7536 * So there are 3 cases for each cookie read :
7537 * 1) it's a special attribute, beginning with a '$' : ignore it.
7538 * 2) it's a server id cookie that we *MAY* want to delete : save
7539 * some pointers on it (last semi-colon, beginning of cookie...)
7540 * 3) it's an application cookie : we *MAY* have to delete a previous
7541 * "special" cookie.
7542 * At the end of loop, if a "special" cookie remains, we may have to
7543 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7544 * *MUST* delete it.
7545 *
7546 * Note: RFC2965 is unclear about the processing of spaces around
7547 * the equal sign in the ATTR=VALUE form. A careful inspection of
7548 * the RFC explicitly allows spaces before it, and not within the
7549 * tokens (attrs or values). An inspection of RFC2109 allows that
7550 * too but section 10.1.3 lets one think that spaces may be allowed
7551 * after the equal sign too, resulting in some (rare) buggy
7552 * implementations trying to do that. So let's do what servers do.
7553 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
7554 * allowed quoted strings in values, with any possible character
7555 * after a backslash, including control chars and delimitors, which
7556 * causes parsing to become ambiguous. Browsers also allow spaces
7557 * within values even without quotes.
7558 *
7559 * We have to keep multiple pointers in order to support cookie
7560 * removal at the beginning, middle or end of header without
7561 * corrupting the header. All of these headers are valid :
7562 *
7563 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
7564 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
7565 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
7566 * | | | | | | | | |
7567 * | | | | | | | | hdr_end <--+
7568 * | | | | | | | +--> next
7569 * | | | | | | +----> val_end
7570 * | | | | | +-----------> val_beg
7571 * | | | | +--------------> equal
7572 * | | | +----------------> att_end
7573 * | | +---------------------> att_beg
7574 * | +--------------------------> prev
7575 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7576 */
7577
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7578 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
7579 /* Iterate through all cookies on this line */
7580
7581 /* find att_beg */
7582 att_beg = prev + 1;
7583 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7584 att_beg++;
7585
7586 /* find att_end : this is the first character after the last non
7587 * space before the equal. It may be equal to hdr_end.
7588 */
7589 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7590
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7591 while (equal < hdr_end) {
7592 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7593 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7594 if (http_is_spht[(unsigned char)*equal++])
7595 continue;
7596 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7597 }
7598
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7599 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7600 * is between <att_beg> and <equal>, both may be identical.
7601 */
7602
7603 /* look for end of cookie if there is an equal sign */
7604 if (equal < hdr_end && *equal == '=') {
7605 /* look for the beginning of the value */
7606 val_beg = equal + 1;
7607 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7608 val_beg++;
7609
7610 /* find the end of the value, respecting quotes */
7611 next = find_cookie_value_end(val_beg, hdr_end);
7612
7613 /* make val_end point to the first white space or delimitor after the value */
7614 val_end = next;
7615 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7616 val_end--;
7617 } else {
7618 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7619 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7620
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7621 /* We have nothing to do with attributes beginning with '$'. However,
7622 * they will automatically be removed if a header before them is removed,
7623 * since they're supposed to be linked together.
7624 */
7625 if (*att_beg == '$')
7626 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7627
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7628 /* Ignore cookies with no equal sign */
7629 if (equal == next) {
7630 /* This is not our cookie, so we must preserve it. But if we already
7631 * scheduled another cookie for removal, we cannot remove the
7632 * complete header, but we can remove the previous block itself.
7633 */
7634 preserve_hdr = 1;
7635 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7636 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7637 val_end += delta;
7638 next += delta;
7639 hdr_end += delta;
7640 hdr_next += delta;
7641 cur_hdr->len += delta;
7642 http_msg_move_end(&txn->req, delta);
7643 prev = del_from;
7644 del_from = NULL;
7645 }
7646 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7647 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7648
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7649 /* if there are spaces around the equal sign, we need to
7650 * strip them otherwise we'll get trouble for cookie captures,
7651 * or even for rewrites. Since this happens extremely rarely,
7652 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7653 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7654 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7655 int stripped_before = 0;
7656 int stripped_after = 0;
7657
7658 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7659 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7660 equal += stripped_before;
7661 val_beg += stripped_before;
7662 }
7663
7664 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7665 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7666 val_beg += stripped_after;
7667 stripped_before += stripped_after;
7668 }
7669
7670 val_end += stripped_before;
7671 next += stripped_before;
7672 hdr_end += stripped_before;
7673 hdr_next += stripped_before;
7674 cur_hdr->len += stripped_before;
7675 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7676 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7677 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7678
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7679 /* First, let's see if we want to capture this cookie. We check
7680 * that we don't already have a client side cookie, because we
7681 * can only capture one. Also as an optimisation, we ignore
7682 * cookies shorter than the declared name.
7683 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7684 if (sess->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7685 (val_end - att_beg >= sess->fe->capture_namelen) &&
7686 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7687 int log_len = val_end - att_beg;
7688
7689 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7690 Alert("HTTP logging : out of memory.\n");
7691 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7692 if (log_len > sess->fe->capture_len)
7693 log_len = sess->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7694 memcpy(txn->cli_cookie, att_beg, log_len);
7695 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7696 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7697 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7698
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7699 /* Persistence cookies in passive, rewrite or insert mode have the
7700 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7701 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7702 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7703 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7704 * For cookies in prefix mode, the form is :
7705 *
7706 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7707 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7708 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
7709 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
7710 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7711 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7712
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7713 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7714 * have the server ID between val_beg and delim, and the original cookie between
7715 * delim+1 and val_end. Otherwise, delim==val_end :
7716 *
7717 * Cookie: NAME=SRV; # in all but prefix modes
7718 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7719 * | || || | |+-> next
7720 * | || || | +--> val_end
7721 * | || || +---------> delim
7722 * | || |+------------> val_beg
7723 * | || +-------------> att_end = equal
7724 * | |+-----------------> att_beg
7725 * | +------------------> prev
7726 * +-------------------------> hdr_beg
7727 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7728
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7729 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7730 for (delim = val_beg; delim < val_end; delim++)
7731 if (*delim == COOKIE_DELIM)
7732 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7733 } else {
7734 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7735 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7736 /* Now check if the cookie contains a date field, which would
7737 * appear after a vertical bar ('|') just after the server name
7738 * and before the delimiter.
7739 */
7740 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7741 if (vbar1) {
7742 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7743 * right is the last seen date. It is a base64 encoded
7744 * 30-bit value representing the UNIX date since the
7745 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7746 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7747 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7748 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7749 if (val_end - vbar1 >= 5) {
7750 val = b64tos30(vbar1);
7751 if (val > 0)
7752 txn->cookie_last_date = val << 2;
7753 }
7754 /* look for a second vertical bar */
7755 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7756 if (vbar1 && (val_end - vbar1 > 5)) {
7757 val = b64tos30(vbar1 + 1);
7758 if (val > 0)
7759 txn->cookie_first_date = val << 2;
7760 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7761 }
7762 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7763
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7764 /* if the cookie has an expiration date and the proxy wants to check
7765 * it, then we do that now. We first check if the cookie is too old,
7766 * then only if it has expired. We detect strict overflow because the
7767 * time resolution here is not great (4 seconds). Cookies with dates
7768 * in the future are ignored if their offset is beyond one day. This
7769 * allows an admin to fix timezone issues without expiring everyone
7770 * and at the same time avoids keeping unwanted side effects for too
7771 * long.
7772 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7773 if (txn->cookie_first_date && s->be->cookie_maxlife &&
7774 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7775 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7776 txn->flags &= ~TX_CK_MASK;
7777 txn->flags |= TX_CK_OLD;
7778 delim = val_beg; // let's pretend we have not found the cookie
7779 txn->cookie_first_date = 0;
7780 txn->cookie_last_date = 0;
7781 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7782 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
7783 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7784 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7785 txn->flags &= ~TX_CK_MASK;
7786 txn->flags |= TX_CK_EXPIRED;
7787 delim = val_beg; // let's pretend we have not found the cookie
7788 txn->cookie_first_date = 0;
7789 txn->cookie_last_date = 0;
7790 }
7791
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7792 /* Here, we'll look for the first running server which supports the cookie.
7793 * This allows to share a same cookie between several servers, for example
7794 * to dedicate backup servers to specific servers only.
7795 * However, to prevent clients from sticking to cookie-less backup server
7796 * when they have incidentely learned an empty cookie, we simply ignore
7797 * empty cookies and mark them as invalid.
7798 * The same behaviour is applied when persistence must be ignored.
7799 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7800 if ((delim == val_beg) || (s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7801 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7802
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7803 while (srv) {
7804 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7805 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7806 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7807 (s->be->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7808 (s->flags & SF_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7809 /* we found the server and we can use it */
7810 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7811 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7812 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7813 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7814 break;
7815 } else {
7816 /* we found a server, but it's down,
7817 * mark it as such and go on in case
7818 * another one is available.
7819 */
7820 txn->flags &= ~TX_CK_MASK;
7821 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7822 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7823 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7824 srv = srv->next;
7825 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7826
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7827 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7828 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7829 txn->flags &= ~TX_CK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7830 if ((s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7831 txn->flags |= TX_CK_UNUSED;
7832 else
7833 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7834 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7835
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7836 /* depending on the cookie mode, we may have to either :
7837 * - delete the complete cookie if we're in insert+indirect mode, so that
7838 * the server never sees it ;
7839 * - remove the server id from the cookie value, and tag the cookie as an
7840 * application cookie so that it does not get accidentely removed later,
7841 * if we're in cookie prefix mode
7842 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7843 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7844 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7845
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7846 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7847 val_end += delta;
7848 next += delta;
7849 hdr_end += delta;
7850 hdr_next += delta;
7851 cur_hdr->len += delta;
7852 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7853
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7854 del_from = NULL;
7855 preserve_hdr = 1; /* we want to keep this cookie */
7856 }
7857 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7858 (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]7859 del_from = prev;
7860 }
7861 } else {
7862 /* This is not our cookie, so we must preserve it. But if we already
7863 * scheduled another cookie for removal, we cannot remove the
7864 * complete header, but we can remove the previous block itself.
7865 */
7866 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7867
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7868 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7869 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7870 if (att_beg >= del_from)
7871 att_beg += delta;
7872 if (att_end >= del_from)
7873 att_end += delta;
7874 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7875 val_end += delta;
7876 next += delta;
7877 hdr_end += delta;
7878 hdr_next += delta;
7879 cur_hdr->len += delta;
7880 http_msg_move_end(&txn->req, delta);
7881 prev = del_from;
7882 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7883 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7884 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7885
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7886 /* Look for the appsession cookie unless persistence must be ignored */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7887 if (!(s->flags & SF_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7888 int cmp_len, value_len;
7889 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7890
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7891 if (s->be->options2 & PR_O2_AS_PFX) {
7892 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
7893 value_begin = att_beg + s->be->appsession_name_len;
7894 value_len = val_end - att_beg - s->be->appsession_name_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7895 } else {
7896 cmp_len = att_end - att_beg;
7897 value_begin = val_beg;
7898 value_len = val_end - val_beg;
7899 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7900
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7901 /* let's see if the cookie is our appcookie */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7902 if (cmp_len == s->be->appsession_name_len &&
7903 memcmp(att_beg, s->be->appsession_name, cmp_len) == 0) {
7904 manage_client_side_appsession(s, value_begin, value_len);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7905 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7906 }
7907
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7908 /* continue with next cookie on this header line */
7909 att_beg = next;
7910 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7911
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7912 /* There are no more cookies on this line.
7913 * We may still have one (or several) marked for deletion at the
7914 * end of the line. We must do this now in two ways :
7915 * - if some cookies must be preserved, we only delete from the
7916 * mark to the end of line ;
7917 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7918 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7919 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7920 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7921 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7922 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7923 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7924 cur_hdr->len += delta;
7925 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7926 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7927
7928 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7929 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7930 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7931 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7932 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7933 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7934 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7935 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7936 }
7937
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7938 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7939 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7940 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7941}
7942
7943
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7944/* Iterate the same filter through all response headers contained in <rtr>.
7945 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7946 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7947int 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]7948{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7949 char *cur_ptr, *cur_end, *cur_next;
7950 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7951 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7952 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7953 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7954
7955 last_hdr = 0;
7956
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7957 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7958 old_idx = 0;
7959
7960 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7961 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7962 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7963 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7964 (exp->action == ACT_ALLOW ||
7965 exp->action == ACT_DENY))
7966 return 0;
7967
7968 cur_idx = txn->hdr_idx.v[old_idx].next;
7969 if (!cur_idx)
7970 break;
7971
7972 cur_hdr = &txn->hdr_idx.v[cur_idx];
7973 cur_ptr = cur_next;
7974 cur_end = cur_ptr + cur_hdr->len;
7975 cur_next = cur_end + cur_hdr->cr + 1;
7976
7977 /* Now we have one header between cur_ptr and cur_end,
7978 * and the next header starts at cur_next.
7979 */
7980
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7981 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]7982 switch (exp->action) {
7983 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7984 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7985 last_hdr = 1;
7986 break;
7987
7988 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7989 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7990 last_hdr = 1;
7991 break;
7992
7993 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7994 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7995 if (trash.len < 0)
7996 return -1;
7997
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7998 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7999 /* FIXME: if the user adds a newline in the replacement, the
8000 * index will not be recalculated for now, and the new line
8001 * will not be counted as a new header.
8002 */
8003
8004 cur_end += delta;
8005 cur_next += delta;
8006 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8007 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8008 break;
8009
8010 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8011 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8012 cur_next += delta;
8013
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8014 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8015 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8016 txn->hdr_idx.used--;
8017 cur_hdr->len = 0;
8018 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8019 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8020 break;
8021
8022 }
8023 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8024
8025 /* keep the link from this header to next one in case of later
8026 * removal of next header.
8027 */
8028 old_idx = cur_idx;
8029 }
8030 return 0;
8031}
8032
8033
8034/* Apply the filter to the status line in the response buffer <rtr>.
8035 * Returns 0 if nothing has been done, 1 if the filter has been applied,
8036 * or -1 if a replacement resulted in an invalid status line.
8037 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8038int 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]8039{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8040 char *cur_ptr, *cur_end;
8041 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8042 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8043 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8044
8045
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8046 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8047 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8048 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8049 (exp->action == ACT_ALLOW ||
8050 exp->action == ACT_DENY))
8051 return 0;
8052 else if (exp->action == ACT_REMOVE)
8053 return 0;
8054
8055 done = 0;
8056
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8057 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]8058 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8059
8060 /* Now we have the status line between cur_ptr and cur_end */
8061
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]8062 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]8063 switch (exp->action) {
8064 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8065 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8066 done = 1;
8067 break;
8068
8069 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8070 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8071 done = 1;
8072 break;
8073
8074 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8075 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
8076 if (trash.len < 0)
8077 return -1;
8078
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8079 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8080 /* FIXME: if the user adds a newline in the replacement, the
8081 * index will not be recalculated for now, and the new line
8082 * will not be counted as a new header.
8083 */
8084
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8085 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8086 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8087 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]8088 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8089 cur_ptr, cur_end + 1,
8090 NULL, NULL);
8091 if (unlikely(!cur_end))
8092 return -1;
8093
8094 /* we have a full respnse and we know that we have either a CR
8095 * or an LF at <ptr>.
8096 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8097 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]8098 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]8099 /* there is no point trying this regex on headers */
8100 return 1;
8101 }
8102 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8103 return done;
8104}
8105
8106
8107
8108/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8109 * 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]8110 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
8111 * unparsable response.
8112 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8113int apply_filters_to_response(struct stream *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8114{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]8115 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8116 struct http_txn *txn = s->txn;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8117 struct hdr_exp *exp;
8118
8119 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8120 int ret;
8121
8122 /*
8123 * The interleaving of transformations and verdicts
8124 * makes it difficult to decide to continue or stop
8125 * the evaluation.
8126 */
8127
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8128 if (txn->flags & TX_SVDENY)
8129 break;
8130
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8131 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8132 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
8133 exp->action == ACT_PASS)) {
8134 exp = exp->next;
8135 continue;
8136 }
8137
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8138 /* if this filter had a condition, evaluate it now and skip to
8139 * next filter if the condition does not match.
8140 */
8141 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]8142 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]8143 ret = acl_pass(ret);
8144 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
8145 ret = !ret;
8146 if (!ret)
8147 continue;
8148 }
8149
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8150 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8151 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8152 if (unlikely(ret < 0))
8153 return -1;
8154
8155 if (likely(ret == 0)) {
8156 /* The filter did not match the response, it can be
8157 * iterated through all headers.
8158 */
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8159 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
8160 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8161 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8162 }
8163 return 0;
8164}
8165
8166
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8167/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]8168 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8169 * desirable to call it only when needed. This function is also used when we
8170 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8171 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8172void manage_server_side_cookies(struct stream *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8173{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8174 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8175 struct session *sess = s->sess;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8176 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8177 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8178 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8179 char *hdr_beg, *hdr_end, *hdr_next;
8180 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8181
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8182 /* Iterate through the headers.
8183 * we start with the start line.
8184 */
8185 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8186 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8187
8188 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
8189 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8190 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8191
8192 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8193 hdr_beg = hdr_next;
8194 hdr_end = hdr_beg + cur_hdr->len;
8195 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8196
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8197 /* We have one full header between hdr_beg and hdr_end, and the
8198 * next header starts at hdr_next. We're only interested in
8199 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8200 */
8201
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8202 is_cookie2 = 0;
8203 prev = hdr_beg + 10;
8204 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8205 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8206 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
8207 if (!val) {
8208 old_idx = cur_idx;
8209 continue;
8210 }
8211 is_cookie2 = 1;
8212 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8213 }
8214
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8215 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
8216 * <prev> points to the colon.
8217 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8218 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8219
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8220 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
8221 * check-cache is enabled) and we are not interested in checking
8222 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]8223 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8224 if (s->be->cookie_name == NULL &&
8225 s->be->appsession_name == NULL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8226 sess->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8227 return;
8228
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8229 /* OK so now we know we have to process this response cookie.
8230 * The format of the Set-Cookie header is slightly different
8231 * from the format of the Cookie header in that it does not
8232 * support the comma as a cookie delimiter (thus the header
8233 * cannot be folded) because the Expires attribute described in
8234 * the original Netscape's spec may contain an unquoted date
8235 * with a comma inside. We have to live with this because
8236 * many browsers don't support Max-Age and some browsers don't
8237 * support quoted strings. However the Set-Cookie2 header is
8238 * clean.
8239 *
8240 * We have to keep multiple pointers in order to support cookie
8241 * removal at the beginning, middle or end of header without
8242 * corrupting the header (in case of set-cookie2). A special
8243 * pointer, <scav> points to the beginning of the set-cookie-av
8244 * fields after the first semi-colon. The <next> pointer points
8245 * either to the end of line (set-cookie) or next unquoted comma
8246 * (set-cookie2). All of these headers are valid :
8247 *
8248 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
8249 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8250 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8251 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
8252 * | | | | | | | | | |
8253 * | | | | | | | | +-> next hdr_end <--+
8254 * | | | | | | | +------------> scav
8255 * | | | | | | +--------------> val_end
8256 * | | | | | +--------------------> val_beg
8257 * | | | | +----------------------> equal
8258 * | | | +------------------------> att_end
8259 * | | +----------------------------> att_beg
8260 * | +------------------------------> prev
8261 * +-----------------------------------------> hdr_beg
8262 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8263
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8264 for (; prev < hdr_end; prev = next) {
8265 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8266
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8267 /* find att_beg */
8268 att_beg = prev + 1;
8269 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8270 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8271
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8272 /* find att_end : this is the first character after the last non
8273 * space before the equal. It may be equal to hdr_end.
8274 */
8275 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8276
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8277 while (equal < hdr_end) {
8278 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
8279 break;
8280 if (http_is_spht[(unsigned char)*equal++])
8281 continue;
8282 att_end = equal;
8283 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8284
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8285 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8286 * is between <att_beg> and <equal>, both may be identical.
8287 */
8288
8289 /* look for end of cookie if there is an equal sign */
8290 if (equal < hdr_end && *equal == '=') {
8291 /* look for the beginning of the value */
8292 val_beg = equal + 1;
8293 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8294 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8295
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8296 /* find the end of the value, respecting quotes */
8297 next = find_cookie_value_end(val_beg, hdr_end);
8298
8299 /* make val_end point to the first white space or delimitor after the value */
8300 val_end = next;
8301 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8302 val_end--;
8303 } else {
8304 /* <equal> points to next comma, semi-colon or EOL */
8305 val_beg = val_end = next = equal;
8306 }
8307
8308 if (next < hdr_end) {
8309 /* Set-Cookie2 supports multiple cookies, and <next> points to
8310 * a colon or semi-colon before the end. So skip all attr-value
8311 * pairs and look for the next comma. For Set-Cookie, since
8312 * commas are permitted in values, skip to the end.
8313 */
8314 if (is_cookie2)
8315 next = find_hdr_value_end(next, hdr_end);
8316 else
8317 next = hdr_end;
8318 }
8319
8320 /* Now everything is as on the diagram above */
8321
8322 /* Ignore cookies with no equal sign */
8323 if (equal == val_end)
8324 continue;
8325
8326 /* If there are spaces around the equal sign, we need to
8327 * strip them otherwise we'll get trouble for cookie captures,
8328 * or even for rewrites. Since this happens extremely rarely,
8329 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8330 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8331 if (unlikely(att_end != equal || val_beg > equal + 1)) {
8332 int stripped_before = 0;
8333 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8334
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8335 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8336 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8337 equal += stripped_before;
8338 val_beg += stripped_before;
8339 }
8340
8341 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8342 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8343 val_beg += stripped_after;
8344 stripped_before += stripped_after;
8345 }
8346
8347 val_end += stripped_before;
8348 next += stripped_before;
8349 hdr_end += stripped_before;
8350 hdr_next += stripped_before;
8351 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]8352 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8353 }
8354
8355 /* First, let's see if we want to capture this cookie. We check
8356 * that we don't already have a server side cookie, because we
8357 * can only capture one. Also as an optimisation, we ignore
8358 * cookies shorter than the declared name.
8359 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8360 if (sess->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]8361 txn->srv_cookie == NULL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8362 (val_end - att_beg >= sess->fe->capture_namelen) &&
8363 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8364 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]8365 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8366 Alert("HTTP logging : out of memory.\n");
8367 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8368 else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8369 if (log_len > sess->fe->capture_len)
8370 log_len = sess->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8371 memcpy(txn->srv_cookie, att_beg, log_len);
8372 txn->srv_cookie[log_len] = 0;
8373 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8374 }
8375
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8376 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8377 /* now check if we need to process it for persistence */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8378 if (!(s->flags & SF_IGNORE_PRST) &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8379 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
8380 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8381 /* assume passive cookie by default */
8382 txn->flags &= ~TX_SCK_MASK;
8383 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8384
8385 /* If the cookie is in insert mode on a known server, we'll delete
8386 * this occurrence because we'll insert another one later.
8387 * 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]8388 * a direct access.
8389 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8390 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]8391 /* The "preserve" flag was set, we don't want to touch the
8392 * server's cookie.
8393 */
8394 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8395 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8396 ((s->flags & SF_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8397 /* this cookie must be deleted */
8398 if (*prev == ':' && next == hdr_end) {
8399 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8400 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8401 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8402 txn->hdr_idx.used--;
8403 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8404 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8405 hdr_next += delta;
8406 http_msg_move_end(&txn->rsp, delta);
8407 /* note: while both invalid now, <next> and <hdr_end>
8408 * are still equal, so the for() will stop as expected.
8409 */
8410 } else {
8411 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8412 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8413 next = prev;
8414 hdr_end += delta;
8415 hdr_next += delta;
8416 cur_hdr->len += delta;
8417 http_msg_move_end(&txn->rsp, delta);
8418 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8419 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8420 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8421 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8422 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8423 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8424 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8425 * with this server since we know it.
8426 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8427 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8428 next += delta;
8429 hdr_end += delta;
8430 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8431 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8432 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8433
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8434 txn->flags &= ~TX_SCK_MASK;
8435 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8436 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8437 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8438 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8439 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8440 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8441 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8442 next += delta;
8443 hdr_end += delta;
8444 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8445 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8446 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8447
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8448 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8449 txn->flags &= ~TX_SCK_MASK;
8450 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8451 }
8452 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]8453 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8454 else if (!(s->flags & SF_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8455 int cmp_len, value_len;
8456 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8457
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8458 if (s->be->options2 & PR_O2_AS_PFX) {
8459 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
8460 value_begin = att_beg + s->be->appsession_name_len;
8461 value_len = MIN(s->be->appsession_len, val_end - att_beg - s->be->appsession_name_len);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8462 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8463 cmp_len = att_end - att_beg;
8464 value_begin = val_beg;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8465 value_len = MIN(s->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8466 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8467
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8468 if ((cmp_len == s->be->appsession_name_len) &&
8469 (memcmp(att_beg, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8470 /* free a possibly previously allocated memory */
8471 pool_free2(apools.sessid, txn->sessid);
8472
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8473 /* Store the sessid in the stream for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8474 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8475 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8476 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8477 return;
8478 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8479 memcpy(txn->sessid, value_begin, value_len);
8480 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8481 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8482 }
8483 /* that's done for this cookie, check the next one on the same
8484 * line when next != hdr_end (only if is_cookie2).
8485 */
8486 }
8487 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8488 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8489 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8490
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8491 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8492 appsess *asession = NULL;
8493 /* only do insert, if lookup fails */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8494 asession = appsession_hash_lookup(&(s->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8495 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]8496 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8497 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
8498 Alert("Not enough Memory process_srv():asession:calloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8499 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8500 return;
8501 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8502 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
8503
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8504 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
8505 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8506 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8507 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8508 return;
8509 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8510 memcpy(asession->sessid, txn->sessid, s->be->appsession_len);
8511 asession->sessid[s->be->appsession_len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8512
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8513 server_id_len = strlen(objt_server(s->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8514 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8515 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8516 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8517 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8518 return;
8519 }
8520 asession->serverid[0] = '\0';
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8521 memcpy(asession->serverid, objt_server(s->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8522
8523 asession->request_count = 0;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8524 appsession_hash_insert(&(s->be->htbl_proxy), asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8525 }
8526
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8527 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8528 asession->request_count++;
8529 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8530}
8531
8532
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8533/*
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8534 * Check if response is cacheable or not. Updates s->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8535 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8536void check_response_for_cacheability(struct stream *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8537{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8538 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8539 char *p1, *p2;
8540
8541 char *cur_ptr, *cur_end, *cur_next;
8542 int cur_idx;
8543
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]8544 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8545 return;
8546
8547 /* Iterate through the headers.
8548 * we start with the start line.
8549 */
8550 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8551 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8552
8553 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
8554 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8555 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8556
8557 cur_hdr = &txn->hdr_idx.v[cur_idx];
8558 cur_ptr = cur_next;
8559 cur_end = cur_ptr + cur_hdr->len;
8560 cur_next = cur_end + cur_hdr->cr + 1;
8561
8562 /* We have one full header between cur_ptr and cur_end, and the
8563 * next header starts at cur_next. We're only interested in
8564 * "Cookie:" headers.
8565 */
8566
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8567 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
8568 if (val) {
8569 if ((cur_end - (cur_ptr + val) >= 8) &&
8570 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
8571 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
8572 return;
8573 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8574 }
8575
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8576 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
8577 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8578 continue;
8579
8580 /* OK, right now we know we have a cache-control header at cur_ptr */
8581
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8582 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8583
8584 if (p1 >= cur_end) /* no more info */
8585 continue;
8586
8587 /* p1 is at the beginning of the value */
8588 p2 = p1;
8589
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]8590 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8591 p2++;
8592
8593 /* we have a complete value between p1 and p2 */
8594 if (p2 < cur_end && *p2 == '=') {
8595 /* we have something of the form no-cache="set-cookie" */
8596 if ((cur_end - p1 >= 21) &&
8597 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
8598 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8599 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8600 continue;
8601 }
8602
8603 /* OK, so we know that either p2 points to the end of string or to a comma */
8604 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8605 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8606 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8607 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8608 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8609 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8610 return;
8611 }
8612
8613 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8614 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8615 continue;
8616 }
8617 }
8618}
8619
8620
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8621/*
8622 * Try to retrieve a known appsession in the URI, then the associated server.
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8623 * If the server is found, it's assigned to the stream.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8624 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8625void get_srv_from_appsession(struct stream *s, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8626{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8627 char *end_params, *first_param, *cur_param, *next_param;
8628 char separator;
8629 int value_len;
8630
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8631 int mode = s->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8632
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8633 if (s->be->appsession_name == NULL ||
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8634 (s->txn->meth != HTTP_METH_GET && s->txn->meth != HTTP_METH_POST && s->txn->meth != HTTP_METH_HEAD)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8635 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8636 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8637
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8638 first_param = NULL;
8639 switch (mode) {
8640 case PR_O2_AS_M_PP:
8641 first_param = memchr(begin, ';', len);
8642 break;
8643 case PR_O2_AS_M_QS:
8644 first_param = memchr(begin, '?', len);
8645 break;
8646 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8647
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8648 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8649 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8650 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8651
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8652 switch (mode) {
8653 case PR_O2_AS_M_PP:
8654 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
8655 end_params = (char *) begin + len;
8656 }
8657 separator = ';';
8658 break;
8659 case PR_O2_AS_M_QS:
8660 end_params = (char *) begin + len;
8661 separator = '&';
8662 break;
8663 default:
8664 /* unknown mode, shouldn't happen */
8665 return;
8666 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8667
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8668 cur_param = next_param = end_params;
8669 while (cur_param > first_param) {
8670 cur_param--;
8671 if ((cur_param[0] == separator) || (cur_param == first_param)) {
8672 /* let's see if this is the appsession parameter */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8673 if ((cur_param + s->be->appsession_name_len + 1 < next_param) &&
8674 ((s->be->options2 & PR_O2_AS_PFX) || cur_param[s->be->appsession_name_len + 1] == '=') &&
8675 (strncasecmp(cur_param + 1, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8676 /* Cool... it's the right one */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8677 cur_param += s->be->appsession_name_len + (s->be->options2 & PR_O2_AS_PFX ? 1 : 2);
8678 value_len = MIN(s->be->appsession_len, next_param - cur_param);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8679 if (value_len > 0) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8680 manage_client_side_appsession(s, cur_param, value_len);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8681 }
8682 break;
8683 }
8684 next_param = cur_param;
8685 }
8686 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8687#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]8688 Alert("get_srv_from_appsession\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8689 appsession_hash_dump(&(s->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8690#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8691}
8692
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8693/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8694 * 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]8695 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8696 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8697 * 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]8698 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8699 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8700 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8701 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8702int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8703{
8704 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8705 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8706 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8707
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8708 if (!uri_auth)
8709 return 0;
8710
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8711 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]8712 return 0;
8713
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8714 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8715 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8716 return 0;
8717
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8718 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8719 return 0;
8720
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8721 return 1;
8722}
8723
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8724/*
8725 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8726 * By default it tries to report the error position as msg->err_pos. However if
8727 * this one is not set, it will then report msg->next, which is the last known
8728 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8729 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8730 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8731void http_capture_bad_message(struct error_snapshot *es, struct stream *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8732 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8733 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8734{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8735 struct session *sess = strm_sess(s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8736 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8737 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8738
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8739 es->len = MIN(chn->buf->i, sizeof(es->buf));
8740 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8741 len1 = MIN(len1, es->len);
8742 len2 = es->len - len1; /* remaining data if buffer wraps */
8743
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8744 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8745 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8746 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8747
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8748 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8749 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8750 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8751 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8752
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8753 es->when = date; // user-visible date
8754 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8755 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8756 es->oe = other_end;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8757 if (objt_conn(sess->origin))
8758 es->src = __objt_conn(sess->origin)->addr.from;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8759 else
8760 memset(&es->src, 0, sizeof(es->src));
8761
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8762 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8763 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8764 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8765 es->s_flags = s->flags;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8766 es->t_flags = s->txn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8767 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8768 es->b_out = chn->buf->o;
8769 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8770 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8771 es->m_clen = msg->chunk_len;
8772 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8773}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8774
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8775/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8776 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8777 * performed over the whole headers. Otherwise it must contain a valid header
8778 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8779 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8780 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8781 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8782 * -1. The value fetch stops at commas, so this function is suited for use with
8783 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8784 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8785 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8786unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8787 struct hdr_idx *idx, int occ,
8788 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8789{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8790 struct hdr_ctx local_ctx;
8791 char *ptr_hist[MAX_HDR_HISTORY];
8792 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8793 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8794 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8795
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8796 if (!ctx) {
8797 local_ctx.idx = 0;
8798 ctx = &local_ctx;
8799 }
8800
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8801 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8802 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8803 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8804 occ--;
8805 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8806 *vptr = ctx->line + ctx->val;
8807 *vlen = ctx->vlen;
8808 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8809 }
8810 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8811 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8812 }
8813
8814 /* negative occurrence, we scan all the list then walk back */
8815 if (-occ > MAX_HDR_HISTORY)
8816 return 0;
8817
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8818 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8819 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8820 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8821 len_hist[hist_ptr] = ctx->vlen;
8822 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8823 hist_ptr = 0;
8824 found++;
8825 }
8826 if (-occ > found)
8827 return 0;
8828 /* 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]8829 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8830 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8831 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8832 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8833 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8834 if (hist_ptr >= MAX_HDR_HISTORY)
8835 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8836 *vptr = ptr_hist[hist_ptr];
8837 *vlen = len_hist[hist_ptr];
8838 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8839}
8840
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8841/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8842 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8843 * performed over the whole headers. Otherwise it must contain a valid header
8844 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8845 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8846 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8847 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8848 * -1. This function differs from http_get_hdr() in that it only returns full
8849 * line header values and does not stop at commas.
8850 * The return value is 0 if nothing was found, or non-zero otherwise.
8851 */
8852unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8853 struct hdr_idx *idx, int occ,
8854 struct hdr_ctx *ctx, char **vptr, int *vlen)
8855{
8856 struct hdr_ctx local_ctx;
8857 char *ptr_hist[MAX_HDR_HISTORY];
8858 int len_hist[MAX_HDR_HISTORY];
8859 unsigned int hist_ptr;
8860 int found;
8861
8862 if (!ctx) {
8863 local_ctx.idx = 0;
8864 ctx = &local_ctx;
8865 }
8866
8867 if (occ >= 0) {
8868 /* search from the beginning */
8869 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8870 occ--;
8871 if (occ <= 0) {
8872 *vptr = ctx->line + ctx->val;
8873 *vlen = ctx->vlen;
8874 return 1;
8875 }
8876 }
8877 return 0;
8878 }
8879
8880 /* negative occurrence, we scan all the list then walk back */
8881 if (-occ > MAX_HDR_HISTORY)
8882 return 0;
8883
8884 found = hist_ptr = 0;
8885 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8886 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8887 len_hist[hist_ptr] = ctx->vlen;
8888 if (++hist_ptr >= MAX_HDR_HISTORY)
8889 hist_ptr = 0;
8890 found++;
8891 }
8892 if (-occ > found)
8893 return 0;
8894 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
8895 * find occurrence -occ, so we have to check [hist_ptr+occ].
8896 */
8897 hist_ptr += occ;
8898 if (hist_ptr >= MAX_HDR_HISTORY)
8899 hist_ptr -= MAX_HDR_HISTORY;
8900 *vptr = ptr_hist[hist_ptr];
8901 *vlen = len_hist[hist_ptr];
8902 return 1;
8903}
8904
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8905/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8906 * Print a debug line with a header. Always stop at the first CR or LF char,
8907 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8908 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8909 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8910void debug_hdr(const char *dir, struct stream *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8911{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8912 struct session *sess = strm_sess(s);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8913 int max;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8914
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8915 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8916 dir,
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8917 objt_conn(sess->origin) ? (unsigned short)objt_conn(sess->origin)->t.sock.fd : -1,
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]8918 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]8919
8920 for (max = 0; start + max < end; max++)
8921 if (start[max] == '\r' || start[max] == '\n')
8922 break;
8923
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8924 UBOUND(max, trash.size - trash.len - 3);
8925 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8926 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8927 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8928}
8929
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8930
8931/* Allocate a new HTTP transaction for stream <s> unless there is one already.
8932 * The hdr_idx is allocated as well. In case of allocation failure, everything
8933 * allocated is freed and NULL is returned. Otherwise the new transaction is
8934 * assigned to the stream and returned.
8935 */
8936struct http_txn *http_alloc_txn(struct stream *s)
8937{
8938 struct http_txn *txn = s->txn;
8939
8940 if (txn)
8941 return txn;
8942
8943 txn = pool_alloc2(pool2_http_txn);
8944 if (!txn)
8945 return txn;
8946
8947 txn->hdr_idx.size = global.tune.max_http_hdr;
8948 txn->hdr_idx.v = pool_alloc2(pool2_hdr_idx);
8949 if (!txn->hdr_idx.v) {
8950 pool_free2(pool2_http_txn, txn);
8951 return NULL;
8952 }
8953
8954 s->txn = txn;
8955 return txn;
8956}
8957
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8958/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8959 * Initialize a new HTTP transaction for stream <s>. It is assumed that all
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8960 * the required fields are properly allocated and that we only need to (re)init
8961 * them. This should be used before processing any new request.
8962 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8963void http_init_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8964{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8965 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8966 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8967
8968 txn->flags = 0;
8969 txn->status = -1;
8970
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8971 txn->cookie_first_date = 0;
8972 txn->cookie_last_date = 0;
8973
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8974 txn->sessid = NULL;
8975 txn->srv_cookie = NULL;
8976 txn->cli_cookie = NULL;
8977 txn->uri = NULL;
8978
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8979 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8980 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8981 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8982 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8983 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8984 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]8985 txn->req.chunk_len = 0LL;
8986 txn->req.body_len = 0LL;
8987 txn->rsp.chunk_len = 0LL;
8988 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8989 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8990 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8991 txn->req.chn = &s->req;
8992 txn->rsp.chn = &s->res;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8993
8994 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8995
8996 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8997 if (fe->options2 & PR_O2_REQBUG_OK)
8998 txn->req.err_pos = -1; /* let buggy requests pass */
8999
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9000 if (txn->hdr_idx.v)
9001 hdr_idx_init(&txn->hdr_idx);
9002}
9003
9004/* to be used at the end of a transaction */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]9005void http_end_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9006{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]9007 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9008 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9009
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]9010 /* release any possible compression context */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]9011 if (s->flags & SF_COMP_READY)
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]9012 s->comp_algo->end(&s->comp_ctx);
9013 s->comp_algo = NULL;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]9014 s->flags &= ~SF_COMP_READY;
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]9015
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9016 /* these ones will have been dynamically allocated */
9017 pool_free2(pool2_requri, txn->uri);
9018 pool_free2(pool2_capture, txn->cli_cookie);
9019 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]9020 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]9021 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9022
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]9023 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]9024 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9025 txn->uri = NULL;
9026 txn->srv_cookie = NULL;
9027 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9028
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]9029 if (s->req_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9030 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]9031 for (h = fe->req_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]9032 pool_free2(h->pool, s->req_cap[h->index]);
9033 memset(s->req_cap, 0, fe->nb_req_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9034 }
9035
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]9036 if (s->res_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9037 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]9038 for (h = fe->rsp_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]9039 pool_free2(h->pool, s->res_cap[h->index]);
9040 memset(s->res_cap, 0, fe->nb_rsp_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9041 }
9042
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9043}
9044
9045/* to be used at the end of a transaction to prepare a new one */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]9046void http_reset_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9047{
9048 http_end_txn(s);
9049 http_init_txn(s);
9050
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]9051 /* reinitialise the current rule list pointer to NULL. We are sure that
9052 * any rulelist match the NULL pointer.
9053 */
9054 s->current_rule_list = NULL;
9055
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9056 s->be = strm_fe(s);
9057 s->logs.logwait = strm_fe(s)->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]9058 s->logs.level = 0;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]9059 stream_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]9060 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]9061 /* re-init store persistence */
9062 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]9063 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]9064
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9065 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9066
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9067 s->req.flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9068
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]9069 /* We must trim any excess data from the response buffer, because we
9070 * may have blocked an invalid response from a server that we don't
9071 * want to accidentely forward once we disable the analysers, nor do
9072 * we want those data to come along with next response. A typical
9073 * example of such data would be from a buggy server responding to
9074 * a HEAD with some data, or sending more than the advertised
9075 * content-length.
9076 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9077 if (unlikely(s->res.buf->i))
9078 s->res.buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]9079
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9080 s->req.rto = strm_fe(s)->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9081 s->req.wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9082
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9083 s->res.rto = TICK_ETERNITY;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9084 s->res.wto = strm_fe(s)->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9085
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9086 s->req.rex = TICK_ETERNITY;
9087 s->req.wex = TICK_ETERNITY;
9088 s->req.analyse_exp = TICK_ETERNITY;
9089 s->res.rex = TICK_ETERNITY;
9090 s->res.wex = TICK_ETERNITY;
9091 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9092}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]9093
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9094void free_http_res_rules(struct list *r)
9095{
9096 struct http_res_rule *tr, *pr;
9097
9098 list_for_each_entry_safe(pr, tr, r, list) {
9099 LIST_DEL(&pr->list);
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9100 regex_free(&pr->arg.hdr_add.re);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9101 free(pr);
9102 }
9103}
9104
9105void free_http_req_rules(struct list *r)
9106{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9107 struct http_req_rule *tr, *pr;
9108
9109 list_for_each_entry_safe(pr, tr, r, list) {
9110 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9111 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9112 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9113
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9114 regex_free(&pr->arg.hdr_add.re);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9115 free(pr);
9116 }
9117}
9118
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9119/* parse an "http-request" rule */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9120struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
9121{
9122 struct http_req_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9123 struct http_req_action_kw *custom = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9124 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9125 char *error;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9126
9127 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
9128 if (!rule) {
9129 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9130 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9131 }
9132
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9133 rule->deny_status = HTTP_ERR_403;
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9134 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9135 rule->action = HTTP_REQ_ACT_ALLOW;
9136 cur_arg = 1;
Willy Tarreau5bd67592014-04-28 22:00:46 +0200[diff] [blame]9137 } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block")) {
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9138 int code;
9139 int hc;
9140
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9141 rule->action = HTTP_REQ_ACT_DENY;
9142 cur_arg = 1;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9143 if (strcmp(args[cur_arg], "deny_status") == 0) {
9144 cur_arg++;
9145 if (!args[cur_arg]) {
9146 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing status code.\n",
9147 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9148 goto out_err;
9149 }
9150
9151 code = atol(args[cur_arg]);
9152 cur_arg++;
9153 for (hc = 0; hc < HTTP_ERR_SIZE; hc++) {
9154 if (http_err_codes[hc] == code) {
9155 rule->deny_status = hc;
9156 break;
9157 }
9158 }
9159
9160 if (hc >= HTTP_ERR_SIZE) {
9161 Warning("parsing [%s:%d] : status code %d not handled, using default code 403.\n",
9162 file, linenum, code);
9163 }
9164 }
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]9165 } else if (!strcmp(args[0], "tarpit")) {
9166 rule->action = HTTP_REQ_ACT_TARPIT;
9167 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9168 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9169 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9170 cur_arg = 1;
9171
9172 while(*args[cur_arg]) {
9173 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9174 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9175 cur_arg+=2;
9176 continue;
9177 } else
9178 break;
9179 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9180 } else if (!strcmp(args[0], "set-nice")) {
9181 rule->action = HTTP_REQ_ACT_SET_NICE;
9182 cur_arg = 1;
9183
9184 if (!*args[cur_arg] ||
9185 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9186 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
9187 file, linenum, args[0]);
9188 goto out_err;
9189 }
9190 rule->arg.nice = atoi(args[cur_arg]);
9191 if (rule->arg.nice < -1024)
9192 rule->arg.nice = -1024;
9193 else if (rule->arg.nice > 1024)
9194 rule->arg.nice = 1024;
9195 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9196 } else if (!strcmp(args[0], "set-tos")) {
9197#ifdef IP_TOS
9198 char *err;
9199 rule->action = HTTP_REQ_ACT_SET_TOS;
9200 cur_arg = 1;
9201
9202 if (!*args[cur_arg] ||
9203 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9204 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
9205 file, linenum, args[0]);
9206 goto out_err;
9207 }
9208
9209 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9210 if (err && *err != '\0') {
9211 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
9212 file, linenum, err, args[0]);
9213 goto out_err;
9214 }
9215 cur_arg++;
9216#else
9217 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9218 goto out_err;
9219#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9220 } else if (!strcmp(args[0], "set-mark")) {
9221#ifdef SO_MARK
9222 char *err;
9223 rule->action = HTTP_REQ_ACT_SET_MARK;
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 (integer/hex value).\n",
9229 file, linenum, args[0]);
9230 goto out_err;
9231 }
9232
9233 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9234 if (err && *err != '\0') {
9235 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
9236 file, linenum, err, args[0]);
9237 goto out_err;
9238 }
9239 cur_arg++;
9240 global.last_checks |= LSTCHK_NETADM;
9241#else
9242 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9243 goto out_err;
9244#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9245 } else if (!strcmp(args[0], "set-log-level")) {
9246 rule->action = HTTP_REQ_ACT_SET_LOGL;
9247 cur_arg = 1;
9248
9249 if (!*args[cur_arg] ||
9250 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9251 bad_log_level:
9252 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
9253 file, linenum, args[0]);
9254 goto out_err;
9255 }
9256 if (strcmp(args[cur_arg], "silent") == 0)
9257 rule->arg.loglevel = -1;
9258 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
9259 goto bad_log_level;
9260 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9261 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
9262 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
9263 cur_arg = 1;
9264
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]9265 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9266 (*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]9267 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9268 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9269 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9270 }
9271
9272 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9273 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9274 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]9275
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9276 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9277 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]9278 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9279 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9280 free(proxy->conf.lfs_file);
9281 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9282 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9283 cur_arg += 2;
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9284 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
9285 rule->action = args[0][8] == 'h' ? HTTP_REQ_ACT_REPLACE_HDR : HTTP_REQ_ACT_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9286 cur_arg = 1;
9287
9288 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann92df3702014-06-24 11:10:00 +0200[diff] [blame]9289 (*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]9290 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
9291 file, linenum, args[0]);
9292 goto out_err;
9293 }
9294
9295 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9296 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9297 LIST_INIT(&rule->arg.hdr_add.fmt);
9298
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9299 error = NULL;
9300 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9301 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9302 args[cur_arg + 1], error);
9303 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9304 goto out_err;
9305 }
9306
9307 proxy->conf.args.ctx = ARGC_HRQ;
9308 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9309 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9310 file, linenum);
9311
9312 free(proxy->conf.lfs_file);
9313 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9314 proxy->conf.lfs_line = proxy->conf.args.line;
9315 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9316 } else if (strcmp(args[0], "del-header") == 0) {
9317 rule->action = HTTP_REQ_ACT_DEL_HDR;
9318 cur_arg = 1;
9319
9320 if (!*args[cur_arg] ||
9321 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9322 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9323 file, linenum, args[0]);
9324 goto out_err;
9325 }
9326
9327 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9328 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9329
9330 proxy->conf.args.ctx = ARGC_HRQ;
9331 free(proxy->conf.lfs_file);
9332 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9333 proxy->conf.lfs_line = proxy->conf.args.line;
9334 cur_arg += 1;
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9335 } else if (strncmp(args[0], "track-sc", 8) == 0 &&
9336 args[0][9] == '\0' && args[0][8] >= '0' &&
Willy Tarreaue1cfc1f2014-10-17 11:53:05 +0200[diff] [blame]9337 args[0][8] < '0' + MAX_SESS_STKCTR) { /* track-sc 0..9 */
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9338 struct sample_expr *expr;
9339 unsigned int where;
9340 char *err = NULL;
9341
9342 cur_arg = 1;
9343 proxy->conf.args.ctx = ARGC_TRK;
9344
9345 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9346 if (!expr) {
9347 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9348 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9349 free(err);
9350 goto out_err;
9351 }
9352
9353 where = 0;
9354 if (proxy->cap & PR_CAP_FE)
9355 where |= SMP_VAL_FE_HRQ_HDR;
9356 if (proxy->cap & PR_CAP_BE)
9357 where |= SMP_VAL_BE_HRQ_HDR;
9358
9359 if (!(expr->fetch->val & where)) {
9360 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule :"
9361 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9362 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9363 args[cur_arg-1], sample_src_names(expr->fetch->use));
9364 free(expr);
9365 goto out_err;
9366 }
9367
9368 if (strcmp(args[cur_arg], "table") == 0) {
9369 cur_arg++;
9370 if (!args[cur_arg]) {
9371 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing table name.\n",
9372 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9373 free(expr);
9374 goto out_err;
9375 }
9376 /* we copy the table name for now, it will be resolved later */
9377 rule->act_prm.trk_ctr.table.n = strdup(args[cur_arg]);
9378 cur_arg++;
9379 }
9380 rule->act_prm.trk_ctr.expr = expr;
9381 rule->action = HTTP_REQ_ACT_TRK_SC0 + args[0][8] - '0';
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9382 } else if (strcmp(args[0], "redirect") == 0) {
9383 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]9384 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9385
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9386 if ((redir = http_parse_redirect_rule(file, linenum, proxy, (const char **)args + 1, &errmsg, 1)) == NULL) {
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9387 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9388 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9389 goto out_err;
9390 }
9391
9392 /* this redirect rule might already contain a parsed condition which
9393 * we'll pass to the http-request rule.
9394 */
9395 rule->action = HTTP_REQ_ACT_REDIR;
9396 rule->arg.redir = redir;
9397 rule->cond = redir->cond;
9398 redir->cond = NULL;
9399 cur_arg = 2;
9400 return rule;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9401 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9402 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9403 rule->action = HTTP_REQ_ACT_ADD_ACL;
9404 /*
9405 * '+ 8' for 'add-acl('
9406 * '- 9' for 'add-acl(' + trailing ')'
9407 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9408 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9409
9410 cur_arg = 1;
9411
9412 if (!*args[cur_arg] ||
9413 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9414 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9415 file, linenum, args[0]);
9416 goto out_err;
9417 }
9418
9419 LIST_INIT(&rule->arg.map.key);
9420 proxy->conf.args.ctx = ARGC_HRQ;
9421 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9422 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9423 file, linenum);
9424 free(proxy->conf.lfs_file);
9425 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9426 proxy->conf.lfs_line = proxy->conf.args.line;
9427 cur_arg += 1;
9428 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9429 /* http-request del-acl(<reference (acl name)>) <key pattern> */
9430 rule->action = HTTP_REQ_ACT_DEL_ACL;
9431 /*
9432 * '+ 8' for 'del-acl('
9433 * '- 9' for 'del-acl(' + trailing ')'
9434 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9435 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9436
9437 cur_arg = 1;
9438
9439 if (!*args[cur_arg] ||
9440 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9441 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9442 file, linenum, args[0]);
9443 goto out_err;
9444 }
9445
9446 LIST_INIT(&rule->arg.map.key);
9447 proxy->conf.args.ctx = ARGC_HRQ;
9448 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9449 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9450 file, linenum);
9451 free(proxy->conf.lfs_file);
9452 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9453 proxy->conf.lfs_line = proxy->conf.args.line;
9454 cur_arg += 1;
9455 } else if (strncmp(args[0], "del-map", 7) == 0) {
9456 /* http-request del-map(<reference (map name)>) <key pattern> */
9457 rule->action = HTTP_REQ_ACT_DEL_MAP;
9458 /*
9459 * '+ 8' for 'del-map('
9460 * '- 9' for 'del-map(' + trailing ')'
9461 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9462 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9463
9464 cur_arg = 1;
9465
9466 if (!*args[cur_arg] ||
9467 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9468 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9469 file, linenum, args[0]);
9470 goto out_err;
9471 }
9472
9473 LIST_INIT(&rule->arg.map.key);
9474 proxy->conf.args.ctx = ARGC_HRQ;
9475 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9476 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9477 file, linenum);
9478 free(proxy->conf.lfs_file);
9479 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9480 proxy->conf.lfs_line = proxy->conf.args.line;
9481 cur_arg += 1;
9482 } else if (strncmp(args[0], "set-map", 7) == 0) {
9483 /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */
9484 rule->action = HTTP_REQ_ACT_SET_MAP;
9485 /*
9486 * '+ 8' for 'set-map('
9487 * '- 9' for 'set-map(' + trailing ')'
9488 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9489 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9490
9491 cur_arg = 1;
9492
9493 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9494 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9495 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9496 file, linenum, args[0]);
9497 goto out_err;
9498 }
9499
9500 LIST_INIT(&rule->arg.map.key);
9501 LIST_INIT(&rule->arg.map.value);
9502 proxy->conf.args.ctx = ARGC_HRQ;
9503
9504 /* key pattern */
9505 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9506 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9507 file, linenum);
9508
9509 /* value pattern */
9510 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9511 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9512 file, linenum);
9513 free(proxy->conf.lfs_file);
9514 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9515 proxy->conf.lfs_line = proxy->conf.args.line;
9516
9517 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9518 } else if (((custom = action_http_req_custom(args[0])) != NULL)) {
9519 char *errmsg = NULL;
9520 cur_arg = 1;
9521 /* try in the module list */
9522 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9523 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9524 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9525 free(errmsg);
9526 goto out_err;
9527 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9528 } else {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9529 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', but got '%s'%s.\n",
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9530 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9531 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9532 }
9533
9534 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9535 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9536 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9537
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9538 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9539 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
9540 file, linenum, args[0], errmsg);
9541 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9542 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9543 }
9544 rule->cond = cond;
9545 }
9546 else if (*args[cur_arg]) {
9547 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
9548 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9549 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9550 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9551 }
9552
9553 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9554 out_err:
9555 free(rule);
9556 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9557}
9558
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9559/* parse an "http-respose" rule */
9560struct http_res_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
9561{
9562 struct http_res_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9563 struct http_res_action_kw *custom = NULL;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9564 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9565 char *error;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9566
9567 rule = calloc(1, sizeof(*rule));
9568 if (!rule) {
9569 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
9570 goto out_err;
9571 }
9572
9573 if (!strcmp(args[0], "allow")) {
9574 rule->action = HTTP_RES_ACT_ALLOW;
9575 cur_arg = 1;
9576 } else if (!strcmp(args[0], "deny")) {
9577 rule->action = HTTP_RES_ACT_DENY;
9578 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9579 } else if (!strcmp(args[0], "set-nice")) {
9580 rule->action = HTTP_RES_ACT_SET_NICE;
9581 cur_arg = 1;
9582
9583 if (!*args[cur_arg] ||
9584 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9585 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
9586 file, linenum, args[0]);
9587 goto out_err;
9588 }
9589 rule->arg.nice = atoi(args[cur_arg]);
9590 if (rule->arg.nice < -1024)
9591 rule->arg.nice = -1024;
9592 else if (rule->arg.nice > 1024)
9593 rule->arg.nice = 1024;
9594 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9595 } else if (!strcmp(args[0], "set-tos")) {
9596#ifdef IP_TOS
9597 char *err;
9598 rule->action = HTTP_RES_ACT_SET_TOS;
9599 cur_arg = 1;
9600
9601 if (!*args[cur_arg] ||
9602 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9603 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9604 file, linenum, args[0]);
9605 goto out_err;
9606 }
9607
9608 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9609 if (err && *err != '\0') {
9610 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9611 file, linenum, err, args[0]);
9612 goto out_err;
9613 }
9614 cur_arg++;
9615#else
9616 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9617 goto out_err;
9618#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9619 } else if (!strcmp(args[0], "set-mark")) {
9620#ifdef SO_MARK
9621 char *err;
9622 rule->action = HTTP_RES_ACT_SET_MARK;
9623 cur_arg = 1;
9624
9625 if (!*args[cur_arg] ||
9626 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9627 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9628 file, linenum, args[0]);
9629 goto out_err;
9630 }
9631
9632 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9633 if (err && *err != '\0') {
9634 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9635 file, linenum, err, args[0]);
9636 goto out_err;
9637 }
9638 cur_arg++;
9639 global.last_checks |= LSTCHK_NETADM;
9640#else
9641 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9642 goto out_err;
9643#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9644 } else if (!strcmp(args[0], "set-log-level")) {
9645 rule->action = HTTP_RES_ACT_SET_LOGL;
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 bad_log_level:
9651 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
9652 file, linenum, args[0]);
9653 goto out_err;
9654 }
9655 if (strcmp(args[cur_arg], "silent") == 0)
9656 rule->arg.loglevel = -1;
9657 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
9658 goto bad_log_level;
9659 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9660 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
9661 rule->action = *args[0] == 'a' ? HTTP_RES_ACT_ADD_HDR : HTTP_RES_ACT_SET_HDR;
9662 cur_arg = 1;
9663
9664 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9665 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9666 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9667 file, linenum, args[0]);
9668 goto out_err;
9669 }
9670
9671 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9672 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9673 LIST_INIT(&rule->arg.hdr_add.fmt);
9674
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9675 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9676 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]9677 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9678 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9679 free(proxy->conf.lfs_file);
9680 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9681 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9682 cur_arg += 2;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9683 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9684 rule->action = args[0][8] == 'h' ? HTTP_RES_ACT_REPLACE_HDR : HTTP_RES_ACT_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9685 cur_arg = 1;
9686
9687 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann12cb00b2014-08-08 17:29:06 +0200[diff] [blame]9688 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
9689 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 3 arguments.\n",
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9690 file, linenum, args[0]);
9691 goto out_err;
9692 }
9693
9694 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9695 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9696 LIST_INIT(&rule->arg.hdr_add.fmt);
9697
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9698 error = NULL;
9699 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9700 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9701 args[cur_arg + 1], error);
9702 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9703 goto out_err;
9704 }
9705
9706 proxy->conf.args.ctx = ARGC_HRQ;
9707 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9708 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9709 file, linenum);
9710
9711 free(proxy->conf.lfs_file);
9712 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9713 proxy->conf.lfs_line = proxy->conf.args.line;
9714 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9715 } else if (strcmp(args[0], "del-header") == 0) {
9716 rule->action = HTTP_RES_ACT_DEL_HDR;
9717 cur_arg = 1;
9718
9719 if (!*args[cur_arg] ||
9720 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9721 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9722 file, linenum, args[0]);
9723 goto out_err;
9724 }
9725
9726 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9727 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9728
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9729 proxy->conf.args.ctx = ARGC_HRS;
9730 free(proxy->conf.lfs_file);
9731 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9732 proxy->conf.lfs_line = proxy->conf.args.line;
9733 cur_arg += 1;
9734 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9735 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9736 rule->action = HTTP_RES_ACT_ADD_ACL;
9737 /*
9738 * '+ 8' for 'add-acl('
9739 * '- 9' for 'add-acl(' + trailing ')'
9740 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9741 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9742
9743 cur_arg = 1;
9744
9745 if (!*args[cur_arg] ||
9746 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9747 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9748 file, linenum, args[0]);
9749 goto out_err;
9750 }
9751
9752 LIST_INIT(&rule->arg.map.key);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9753 proxy->conf.args.ctx = ARGC_HRS;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9754 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9755 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9756 file, linenum);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9757 free(proxy->conf.lfs_file);
9758 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9759 proxy->conf.lfs_line = proxy->conf.args.line;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9760
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9761 cur_arg += 1;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9762 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9763 /* http-response del-acl(<reference (acl name)>) <key pattern> */
9764 rule->action = HTTP_RES_ACT_DEL_ACL;
9765 /*
9766 * '+ 8' for 'del-acl('
9767 * '- 9' for 'del-acl(' + trailing ')'
9768 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9769 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9770
9771 cur_arg = 1;
9772
9773 if (!*args[cur_arg] ||
9774 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9775 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9776 file, linenum, args[0]);
9777 goto out_err;
9778 }
9779
9780 LIST_INIT(&rule->arg.map.key);
9781 proxy->conf.args.ctx = ARGC_HRS;
9782 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9783 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9784 file, linenum);
9785 free(proxy->conf.lfs_file);
9786 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9787 proxy->conf.lfs_line = proxy->conf.args.line;
9788 cur_arg += 1;
9789 } else if (strncmp(args[0], "del-map", 7) == 0) {
9790 /* http-response del-map(<reference (map name)>) <key pattern> */
9791 rule->action = HTTP_RES_ACT_DEL_MAP;
9792 /*
9793 * '+ 8' for 'del-map('
9794 * '- 9' for 'del-map(' + trailing ')'
9795 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9796 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9797
9798 cur_arg = 1;
9799
9800 if (!*args[cur_arg] ||
9801 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9802 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9803 file, linenum, args[0]);
9804 goto out_err;
9805 }
9806
9807 LIST_INIT(&rule->arg.map.key);
9808 proxy->conf.args.ctx = ARGC_HRS;
9809 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9810 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9811 file, linenum);
9812 free(proxy->conf.lfs_file);
9813 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9814 proxy->conf.lfs_line = proxy->conf.args.line;
9815 cur_arg += 1;
9816 } else if (strncmp(args[0], "set-map", 7) == 0) {
9817 /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */
9818 rule->action = HTTP_RES_ACT_SET_MAP;
9819 /*
9820 * '+ 8' for 'set-map('
9821 * '- 9' for 'set-map(' + trailing ')'
9822 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9823 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9824
9825 cur_arg = 1;
9826
9827 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9828 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9829 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9830 file, linenum, args[0]);
9831 goto out_err;
9832 }
9833
9834 LIST_INIT(&rule->arg.map.key);
9835 LIST_INIT(&rule->arg.map.value);
9836
9837 proxy->conf.args.ctx = ARGC_HRS;
9838
9839 /* key pattern */
9840 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9841 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9842 file, linenum);
9843
9844 /* value pattern */
9845 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9846 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9847 file, linenum);
9848
9849 free(proxy->conf.lfs_file);
9850 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9851 proxy->conf.lfs_line = proxy->conf.args.line;
9852
9853 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9854 } else if (((custom = action_http_res_custom(args[0])) != NULL)) {
9855 char *errmsg = NULL;
9856 cur_arg = 1;
9857 /* try in the module list */
9858 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9859 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9860 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9861 free(errmsg);
9862 goto out_err;
9863 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9864 } else {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9865 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', but got '%s'%s.\n",
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9866 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
9867 goto out_err;
9868 }
9869
9870 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9871 struct acl_cond *cond;
9872 char *errmsg = NULL;
9873
9874 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9875 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
9876 file, linenum, args[0], errmsg);
9877 free(errmsg);
9878 goto out_err;
9879 }
9880 rule->cond = cond;
9881 }
9882 else if (*args[cur_arg]) {
9883 Alert("parsing [%s:%d]: 'http-response %s' expects"
9884 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9885 file, linenum, args[0], args[cur_arg]);
9886 goto out_err;
9887 }
9888
9889 return rule;
9890 out_err:
9891 free(rule);
9892 return NULL;
9893}
9894
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9895/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9896 * with <err> filled with the error message. If <use_fmt> is not null, builds a
9897 * dynamic log-format rule instead of a static string.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9898 */
9899struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9900 const char **args, char **errmsg, int use_fmt)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9901{
9902 struct redirect_rule *rule;
9903 int cur_arg;
9904 int type = REDIRECT_TYPE_NONE;
9905 int code = 302;
9906 const char *destination = NULL;
9907 const char *cookie = NULL;
9908 int cookie_set = 0;
9909 unsigned int flags = REDIRECT_FLAG_NONE;
9910 struct acl_cond *cond = NULL;
9911
9912 cur_arg = 0;
9913 while (*(args[cur_arg])) {
9914 if (strcmp(args[cur_arg], "location") == 0) {
9915 if (!*args[cur_arg + 1])
9916 goto missing_arg;
9917
9918 type = REDIRECT_TYPE_LOCATION;
9919 cur_arg++;
9920 destination = args[cur_arg];
9921 }
9922 else if (strcmp(args[cur_arg], "prefix") == 0) {
9923 if (!*args[cur_arg + 1])
9924 goto missing_arg;
9925
9926 type = REDIRECT_TYPE_PREFIX;
9927 cur_arg++;
9928 destination = args[cur_arg];
9929 }
9930 else if (strcmp(args[cur_arg], "scheme") == 0) {
9931 if (!*args[cur_arg + 1])
9932 goto missing_arg;
9933
9934 type = REDIRECT_TYPE_SCHEME;
9935 cur_arg++;
9936 destination = args[cur_arg];
9937 }
9938 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
9939 if (!*args[cur_arg + 1])
9940 goto missing_arg;
9941
9942 cur_arg++;
9943 cookie = args[cur_arg];
9944 cookie_set = 1;
9945 }
9946 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
9947 if (!*args[cur_arg + 1])
9948 goto missing_arg;
9949
9950 cur_arg++;
9951 cookie = args[cur_arg];
9952 cookie_set = 0;
9953 }
9954 else if (strcmp(args[cur_arg], "code") == 0) {
9955 if (!*args[cur_arg + 1])
9956 goto missing_arg;
9957
9958 cur_arg++;
9959 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9960 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9961 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9962 "'%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]9963 args[cur_arg - 1], args[cur_arg]);
9964 return NULL;
9965 }
9966 }
9967 else if (!strcmp(args[cur_arg],"drop-query")) {
9968 flags |= REDIRECT_FLAG_DROP_QS;
9969 }
9970 else if (!strcmp(args[cur_arg],"append-slash")) {
9971 flags |= REDIRECT_FLAG_APPEND_SLASH;
9972 }
9973 else if (strcmp(args[cur_arg], "if") == 0 ||
9974 strcmp(args[cur_arg], "unless") == 0) {
9975 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
9976 if (!cond) {
9977 memprintf(errmsg, "error in condition: %s", *errmsg);
9978 return NULL;
9979 }
9980 break;
9981 }
9982 else {
9983 memprintf(errmsg,
9984 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
9985 args[cur_arg]);
9986 return NULL;
9987 }
9988 cur_arg++;
9989 }
9990
9991 if (type == REDIRECT_TYPE_NONE) {
9992 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
9993 return NULL;
9994 }
9995
9996 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
9997 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]9998 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9999
10000 if (!use_fmt) {
10001 /* old-style static redirect rule */
10002 rule->rdr_str = strdup(destination);
10003 rule->rdr_len = strlen(destination);
10004 }
10005 else {
10006 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10007
10008 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
10009 * if prefix == "/", we don't want to add anything, otherwise it
10010 * makes it hard for the user to configure a self-redirection.
10011 */
Godbachd9722032014-12-18 15:44:58 +0800[diff] [blame]10012 curproxy->conf.args.ctx = ARGC_RDR;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10013 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]10014 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
Thierry FOURNIEReeaa9512014-02-11 14:00:19 +0100[diff] [blame]10015 (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
10016 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]10017 free(curproxy->conf.lfs_file);
10018 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
10019 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10020 }
10021 }
10022
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10023 if (cookie) {
10024 /* depending on cookie_set, either we want to set the cookie, or to clear it.
10025 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
10026 */
10027 rule->cookie_len = strlen(cookie);
10028 if (cookie_set) {
10029 rule->cookie_str = malloc(rule->cookie_len + 10);
10030 memcpy(rule->cookie_str, cookie, rule->cookie_len);
10031 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
10032 rule->cookie_len += 9;
10033 } else {
10034 rule->cookie_str = malloc(rule->cookie_len + 21);
10035 memcpy(rule->cookie_str, cookie, rule->cookie_len);
10036 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
10037 rule->cookie_len += 20;
10038 }
10039 }
10040 rule->type = type;
10041 rule->code = code;
10042 rule->flags = flags;
10043 LIST_INIT(&rule->list);
10044 return rule;
10045
10046 missing_arg:
10047 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
10048 return NULL;
10049}
10050
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10051/************************************************************************/
10052/* The code below is dedicated to ACL parsing and matching */
10053/************************************************************************/
10054
10055
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10056/* This function ensures that the prerequisites for an L7 fetch are ready,
10057 * which means that a request or response is ready. If some data is missing,
10058 * 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]10059 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
10060 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10061 *
10062 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10063 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
10064 * decide whether or not an HTTP message is present ;
10065 * 0 if the requested data cannot be fetched or if it is certain that
10066 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10067 * 1 if an HTTP message is ready
10068 */
10069static int
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10070smp_prefetch_http(struct proxy *px, struct stream *s, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10071 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10072{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10073 struct http_txn *txn;
10074 struct http_msg *msg;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10075
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]10076 /* Note: this function may only be used from places where
10077 * http_init_txn() has already been done, and implies that <s>,
10078 * <txn>, and <hdr_idx.v> are properly set. An extra check protects
10079 * against an eventual mistake in the fetch capability matrix.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10080 */
10081
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10082 if (!s)
10083 return 0;
10084 txn = s->txn;
10085
10086 if (!txn)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10087 return 0;
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10088 msg = &txn->req;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10089
10090 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10091 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10092
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10093 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10094 /* If the buffer does not leave enough free space at the end,
10095 * we must first realign it.
10096 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10097 if (s->req.buf->p > s->req.buf->data &&
10098 s->req.buf->i + s->req.buf->p > s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)
10099 buffer_slow_realign(s->req.buf);
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10100
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10101 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]10102 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10103 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10104
10105 /* Try to decode HTTP request */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10106 if (likely(msg->next < s->req.buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10107 http_msg_analyzer(msg, &txn->hdr_idx);
10108
10109 /* Still no valid request ? */
10110 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]10111 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10112 buffer_full(s->req.buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10113 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10114 }
10115 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10116 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10117 return 0;
10118 }
10119
10120 /* OK we just got a valid HTTP request. We have some minor
10121 * preparation to perform so that further checks can rely
10122 * on HTTP tests.
10123 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10124
10125 /* If the request was parsed but was too large, we must absolutely
10126 * return an error so that it is not processed. At the moment this
10127 * cannot happen, but if the parsers are to change in the future,
10128 * we want this check to be maintained.
10129 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10130 if (unlikely(s->req.buf->i + s->req.buf->p >
10131 s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10132 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10133 smp->data.uint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10134 return 1;
10135 }
10136
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10137 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10138 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]10139 s->flags |= SF_REDIRECTABLE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10140
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10141 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
10142 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10143 }
10144
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10145 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10146 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10147 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10148
10149 /* otherwise everything's ready for the request */
10150 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10151 else {
10152 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10153 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
10154 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10155 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10156 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10157 }
10158
10159 /* everything's OK */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10160 smp->data.uint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10161 return 1;
10162}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10163
Willy Tarreau6c616e02014-06-25 16:56:41 +0200[diff] [blame]10164/* Note: these functinos *do* modify the sample. Even in case of success, at
10165 * least the type and uint value are modified.
10166 */
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10167#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10168 do { int r = smp_prefetch_http(px, strm, opt, args, smp, 1); if (r <= 0) return r; } while (0)
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10169
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10170#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10171 do { int r = smp_prefetch_http(px, strm, opt, args, smp, 0); if (r <= 0) return r; } while (0)
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10172
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10173
10174/* 1. Check on METHOD
10175 * We use the pre-parsed method if it is known, and store its number as an
10176 * integer. If it is unknown, we use the pointer and the length.
10177 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]10178static int pat_parse_meth(const char *text, struct pattern *pattern, int mflags, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10179{
10180 int len, meth;
10181
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]10182 len = strlen(text);
10183 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10184
10185 pattern->val.i = meth;
10186 if (meth == HTTP_METH_OTHER) {
Willy Tarreau912c1192014-08-29 15:15:50 +0200[diff] [blame]10187 pattern->ptr.str = (char *)text;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10188 pattern->len = len;
10189 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10190 else {
10191 pattern->ptr.str = NULL;
10192 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10193 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10194 return 1;
10195}
10196
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10197/* This function fetches the method of current HTTP request and stores
10198 * it in the global pattern struct as a chunk. There are two possibilities :
10199 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
10200 * in <len> and <ptr> is NULL ;
10201 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
10202 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10203 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10204 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10205static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10206smp_fetch_meth(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]10207 const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10208{
10209 int meth;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10210 struct http_txn *txn = strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10211
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10212 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10213
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10214 meth = txn->meth;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10215 smp->type = SMP_T_METH;
10216 smp->data.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10217 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10218 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
10219 /* ensure the indexes are not affected */
10220 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10221 smp->flags |= SMP_F_CONST;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10222 smp->data.meth.str.len = txn->req.sl.rq.m_l;
10223 smp->data.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10224 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10225 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10226 return 1;
10227}
10228
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10229/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10230static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10231{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10232 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10233 struct pattern_list *lst;
10234 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10235
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10236 list_for_each_entry(lst, &expr->patterns, list) {
10237 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10238
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10239 /* well-known method */
10240 if (pattern->val.i != HTTP_METH_OTHER) {
10241 if (smp->data.meth.meth == pattern->val.i)
10242 return pattern;
10243 else
10244 continue;
10245 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10246
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10247 /* Other method, we must compare the strings */
10248 if (pattern->len != smp->data.meth.str.len)
10249 continue;
10250
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]10251 icase = expr->mflags & PAT_MF_IGNORE_CASE;
Willy Tarreau4de2a942014-08-28 20:42:57 +0200[diff] [blame]10252 if ((icase && strncasecmp(pattern->ptr.str, smp->data.meth.str.str, smp->data.meth.str.len) == 0) ||
10253 (!icase && strncmp(pattern->ptr.str, smp->data.meth.str.str, smp->data.meth.str.len) == 0))
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10254 return pattern;
10255 }
10256 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10257}
10258
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10259static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10260smp_fetch_rqver(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]10261 const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10262{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10263 struct http_txn *txn = strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10264 char *ptr;
10265 int len;
10266
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10267 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10268
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10269 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10270 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10271
10272 while ((len-- > 0) && (*ptr++ != '/'));
10273 if (len <= 0)
10274 return 0;
10275
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10276 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10277 smp->data.str.str = ptr;
10278 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10279
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10280 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10281 return 1;
10282}
10283
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10284static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10285smp_fetch_stver(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]10286 const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10287{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10288 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10289 char *ptr;
10290 int len;
10291
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10292 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10293
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10294 txn = strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10295 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10296 return 0;
10297
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10298 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10299 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10300
10301 while ((len-- > 0) && (*ptr++ != '/'));
10302 if (len <= 0)
10303 return 0;
10304
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10305 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10306 smp->data.str.str = ptr;
10307 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10308
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10309 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10310 return 1;
10311}
10312
10313/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10314static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10315smp_fetch_stcode(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]10316 const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10317{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10318 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10319 char *ptr;
10320 int len;
10321
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10322 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10323
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10324 txn = strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10325 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10326 return 0;
10327
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10328 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10329 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10330
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10331 smp->type = SMP_T_UINT;
10332 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10333 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10334 return 1;
10335}
10336
10337/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10338static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10339smp_fetch_url(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]10340 const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10341{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10342 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10343
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10344 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10345
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10346 txn = strm->txn;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10347 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10348 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10349 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10350 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10351 return 1;
10352}
10353
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10354static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10355smp_fetch_url_ip(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]10356 const struct arg *args, struct sample *smp, const char *kw, void *private)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10357{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10358 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10359 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10360
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10361 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10362
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10363 txn = strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10364 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]10365 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]10366 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10367
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10368 smp->type = SMP_T_IPV4;
10369 smp->data.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10370 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10371 return 1;
10372}
10373
10374static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10375smp_fetch_url_port(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]10376 const struct arg *args, struct sample *smp, const char *kw, void *private)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10377{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10378 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10379 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10380
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10381 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10382
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10383 txn = strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10384 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]10385 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
10386 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10387
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10388 smp->type = SMP_T_UINT;
10389 smp->data.uint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]10390 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10391 return 1;
10392}
10393
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10394/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10395 * Accepts an optional argument of type string containing the header field name,
10396 * and an optional argument of type signed or unsigned integer to request an
10397 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10398 * headers are considered from the first one. It does not stop on commas and
10399 * returns full lines instead (useful for User-Agent or Date for example).
10400 */
10401static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10402smp_fetch_fhdr(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]10403 const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10404{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10405 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10406 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10407 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10408 int occ = 0;
10409 const char *name_str = NULL;
10410 int name_len = 0;
10411
10412 if (!ctx) {
10413 /* first call */
10414 ctx = &static_hdr_ctx;
10415 ctx->idx = 0;
10416 smp->ctx.a[0] = ctx;
10417 }
10418
10419 if (args) {
10420 if (args[0].type != ARGT_STR)
10421 return 0;
10422 name_str = args[0].data.str.str;
10423 name_len = args[0].data.str.len;
10424
10425 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
10426 occ = args[1].data.uint;
10427 }
10428
10429 CHECK_HTTP_MESSAGE_FIRST();
10430
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10431 idx = &strm->txn->hdr_idx;
10432 msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &strm->txn->req : &strm->txn->rsp;
10433
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10434 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
10435 /* search for header from the beginning */
10436 ctx->idx = 0;
10437
10438 if (!occ && !(opt & SMP_OPT_ITERATE))
10439 /* no explicit occurrence and single fetch => last header by default */
10440 occ = -1;
10441
10442 if (!occ)
10443 /* prepare to report multiple occurrences for ACL fetches */
10444 smp->flags |= SMP_F_NOT_LAST;
10445
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10446 smp->type = SMP_T_STR;
10447 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10448 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.str.str, &smp->data.str.len))
10449 return 1;
10450
10451 smp->flags &= ~SMP_F_NOT_LAST;
10452 return 0;
10453}
10454
10455/* 6. Check on HTTP header count. The number of occurrences is returned.
10456 * Accepts exactly 1 argument of type string. It does not stop on commas and
10457 * returns full lines instead (useful for User-Agent or Date for example).
10458 */
10459static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10460smp_fetch_fhdr_cnt(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10461 const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10462{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10463 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10464 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10465 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10466 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10467 const char *name = NULL;
10468 int len = 0;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10469
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10470 if (args && args->type == ARGT_STR) {
10471 name = args->data.str.str;
10472 len = args->data.str.len;
10473 }
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10474
10475 CHECK_HTTP_MESSAGE_FIRST();
10476
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10477 idx = &strm->txn->hdr_idx;
10478 msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &strm->txn->req : &strm->txn->rsp;
10479
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10480 ctx.idx = 0;
10481 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10482 while (http_find_full_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10483 cnt++;
10484
10485 smp->type = SMP_T_UINT;
10486 smp->data.uint = cnt;
10487 smp->flags = SMP_F_VOL_HDR;
10488 return 1;
10489}
10490
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10491static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10492smp_fetch_hdr_names(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]10493 const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10494{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10495 struct hdr_idx *idx;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10496 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10497 const struct http_msg *msg;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10498 struct chunk *temp;
10499 char del = ',';
10500
10501 if (args && args->type == ARGT_STR)
10502 del = *args[0].data.str.str;
10503
10504 CHECK_HTTP_MESSAGE_FIRST();
10505
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10506 idx = &strm->txn->hdr_idx;
10507 msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &strm->txn->req : &strm->txn->rsp;
10508
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10509 temp = get_trash_chunk();
10510
10511 ctx.idx = 0;
10512 while (http_find_next_header(msg->chn->buf->p, idx, &ctx)) {
10513 if (temp->len)
10514 temp->str[temp->len++] = del;
10515 memcpy(temp->str + temp->len, ctx.line, ctx.del);
10516 temp->len += ctx.del;
10517 }
10518
10519 smp->type = SMP_T_STR;
10520 smp->data.str.str = temp->str;
10521 smp->data.str.len = temp->len;
10522 smp->flags = SMP_F_VOL_HDR;
10523 return 1;
10524}
10525
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10526/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10527 * Accepts an optional argument of type string containing the header field name,
10528 * and an optional argument of type signed or unsigned integer to request an
10529 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10530 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10531 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10532static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10533smp_fetch_hdr(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]10534 const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10535{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10536 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10537 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10538 const struct http_msg *msg;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10539 int occ = 0;
10540 const char *name_str = NULL;
10541 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10542
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10543 if (!ctx) {
10544 /* first call */
10545 ctx = &static_hdr_ctx;
10546 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]10547 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10548 }
10549
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10550 if (args) {
10551 if (args[0].type != ARGT_STR)
10552 return 0;
10553 name_str = args[0].data.str.str;
10554 name_len = args[0].data.str.len;
10555
10556 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
10557 occ = args[1].data.uint;
10558 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10559
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10560 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10561
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10562 idx = &strm->txn->hdr_idx;
10563 msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &strm->txn->req : &strm->txn->rsp;
10564
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10565 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10566 /* search for header from the beginning */
10567 ctx->idx = 0;
10568
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10569 if (!occ && !(opt & SMP_OPT_ITERATE))
10570 /* no explicit occurrence and single fetch => last header by default */
10571 occ = -1;
10572
10573 if (!occ)
10574 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10575 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]10576
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10577 smp->type = SMP_T_STR;
10578 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10579 if (http_get_hdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.str.str, &smp->data.str.len))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10580 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10581
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10582 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10583 return 0;
10584}
10585
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10586/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10587 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10588 */
10589static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10590smp_fetch_hdr_cnt(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]10591 const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10592{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10593 struct hdr_idx *idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10594 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10595 const struct http_msg *msg;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10596 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10597 const char *name = NULL;
10598 int len = 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10599
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10600 if (args && args->type == ARGT_STR) {
10601 name = args->data.str.str;
10602 len = args->data.str.len;
10603 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10604
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10605 CHECK_HTTP_MESSAGE_FIRST();
10606
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10607 idx = &strm->txn->hdr_idx;
10608 msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &strm->txn->req : &strm->txn->rsp;
10609
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10610 ctx.idx = 0;
10611 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10612 while (http_find_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10613 cnt++;
10614
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10615 smp->type = SMP_T_UINT;
10616 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10617 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10618 return 1;
10619}
10620
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10621/* Fetch an HTTP header's integer value. The integer value is returned. It
10622 * takes a mandatory argument of type string and an optional one of type int
10623 * to designate a specific occurrence. It returns an unsigned integer, which
10624 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10625 */
10626static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10627smp_fetch_hdr_val(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]10628 const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10629{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10630 int ret = smp_fetch_hdr(px, sess, strm, opt, args, smp, kw, private);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10631
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10632 if (ret > 0) {
10633 smp->type = SMP_T_UINT;
10634 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
10635 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10636
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10637 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10638}
10639
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10640/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
10641 * and an optional one of type int to designate a specific occurrence.
10642 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10643 */
10644static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10645smp_fetch_hdr_ip(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]10646 const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10647{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10648 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10649
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10650 while ((ret = smp_fetch_hdr(px, sess, strm, opt, args, smp, kw, private)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10651 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
10652 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10653 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10654 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10655 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10656 if (smp->data.str.len < temp->size - 1) {
10657 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
10658 temp->str[smp->data.str.len] = '\0';
10659 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
10660 smp->type = SMP_T_IPV6;
10661 break;
10662 }
10663 }
10664 }
10665
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10666 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10667 if (!(smp->flags & SMP_F_NOT_LAST))
10668 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10669 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10670 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10671}
10672
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10673/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
10674 * the first '/' after the possible hostname, and ends before the possible '?'.
10675 */
10676static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10677smp_fetch_path(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]10678 const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10679{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10680 struct http_txn *txn;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10681 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10682
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10683 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10684
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10685 txn = strm->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10686 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]10687 ptr = http_get_path(txn);
10688 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10689 return 0;
10690
10691 /* OK, we got the '/' ! */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10692 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10693 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10694
10695 while (ptr < end && *ptr != '?')
10696 ptr++;
10697
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10698 smp->data.str.len = ptr - smp->data.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10699 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10700 return 1;
10701}
10702
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10703/* This produces a concatenation of the first occurrence of the Host header
10704 * followed by the path component if it begins with a slash ('/'). This means
10705 * that '*' will not be added, resulting in exactly the first Host entry.
10706 * If no Host header is found, then the path is returned as-is. The returned
10707 * 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]10708 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10709 */
10710static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10711smp_fetch_base(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]10712 const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10713{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10714 struct http_txn *txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10715 char *ptr, *end, *beg;
10716 struct hdr_ctx ctx;
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10717 struct chunk *temp;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10718
10719 CHECK_HTTP_MESSAGE_FIRST();
10720
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10721 txn = strm->txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10722 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10723 if (!http_find_header2("Host", 4, txn->req.chn->buf->p, &txn->hdr_idx, &ctx) || !ctx.vlen)
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10724 return smp_fetch_path(px, sess, strm, opt, args, smp, kw, private);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10725
10726 /* 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]10727 temp = get_trash_chunk();
10728 memcpy(temp->str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10729 smp->type = SMP_T_STR;
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10730 smp->data.str.str = temp->str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10731 smp->data.str.len = ctx.vlen;
10732
10733 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10734 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]10735 beg = http_get_path(txn);
10736 if (!beg)
10737 beg = end;
10738
10739 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10740
10741 if (beg < ptr && *beg == '/') {
10742 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
10743 smp->data.str.len += ptr - beg;
10744 }
10745
10746 smp->flags = SMP_F_VOL_1ST;
10747 return 1;
10748}
10749
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10750/* This produces a 32-bit hash of the concatenation of the first occurrence of
10751 * the Host header followed by the path component if it begins with a slash ('/').
10752 * This means that '*' will not be added, resulting in exactly the first Host
10753 * 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]10754 * is hashed using the path hash followed by a full avalanche hash and provides a
10755 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10756 * high-traffic sites without having to store whole paths.
10757 */
Thierry FOURNIER055b9d52014-07-15 16:11:07 +0200[diff] [blame]10758int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10759smp_fetch_base32(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]10760 const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10761{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10762 struct http_txn *txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10763 struct hdr_ctx ctx;
10764 unsigned int hash = 0;
10765 char *ptr, *beg, *end;
10766 int len;
10767
10768 CHECK_HTTP_MESSAGE_FIRST();
10769
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10770 txn = strm->txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10771 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10772 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]10773 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10774 ptr = ctx.line + ctx.val;
10775 len = ctx.vlen;
10776 while (len--)
10777 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10778 }
10779
10780 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10781 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]10782 beg = http_get_path(txn);
10783 if (!beg)
10784 beg = end;
10785
10786 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10787
10788 if (beg < ptr && *beg == '/') {
10789 while (beg < ptr)
10790 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10791 }
10792 hash = full_hash(hash);
10793
10794 smp->type = SMP_T_UINT;
10795 smp->data.uint = hash;
10796 smp->flags = SMP_F_VOL_1ST;
10797 return 1;
10798}
10799
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10800/* 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]10801 * path as returned by smp_fetch_base32(). The idea is to have per-source and
10802 * per-path counters. The result is a binary block from 8 to 20 bytes depending
10803 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10804 * that in environments where IPv6 is insignificant, truncating the output to
10805 * 8 bytes would still work.
10806 */
10807static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10808smp_fetch_base32_src(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]10809 const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10810{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10811 struct chunk *temp;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]10812 struct connection *cli_conn = objt_conn(sess->origin);
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10813
10814 if (!cli_conn)
10815 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10816
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10817 if (!smp_fetch_base32(px, sess, strm, opt, args, smp, kw, private))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10818 return 0;
10819
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10820 temp = get_trash_chunk();
Willy Tarreau5ad6e1d2014-07-15 21:34:06 +0200[diff] [blame]10821 *(unsigned int *)temp->str = htonl(smp->data.uint);
10822 temp->len += sizeof(unsigned int);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10823
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10824 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10825 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10826 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]10827 temp->len += 4;
10828 break;
10829 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10830 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]10831 temp->len += 16;
10832 break;
10833 default:
10834 return 0;
10835 }
10836
10837 smp->data.str = *temp;
10838 smp->type = SMP_T_BIN;
10839 return 1;
10840}
10841
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10842/* Extracts the query string, which comes after the question mark '?'. If no
10843 * question mark is found, nothing is returned. Otherwise it returns a sample
10844 * of type string carrying the whole query string.
10845 */
10846static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10847smp_fetch_query(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10848 const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10849{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10850 struct http_txn *txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10851 char *ptr, *end;
10852
10853 CHECK_HTTP_MESSAGE_FIRST();
10854
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10855 txn = strm->txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10856 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
10857 end = ptr + txn->req.sl.rq.u_l;
10858
10859 /* look up the '?' */
10860 do {
10861 if (ptr == end)
10862 return 0;
10863 } while (*ptr++ != '?');
10864
10865 smp->type = SMP_T_STR;
10866 smp->data.str.str = ptr;
10867 smp->data.str.len = end - ptr;
10868 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
10869 return 1;
10870}
10871
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10872static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10873smp_fetch_proto_http(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]10874 const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10875{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10876 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
10877 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
10878 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10879
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10880 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10881
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10882 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]10883 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10884 return 1;
10885}
10886
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10887/* return a valid test if the current request is the first one on the connection */
10888static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10889smp_fetch_http_first_req(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]10890 const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10891{
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10892 smp->type = SMP_T_BOOL;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10893 smp->data.uint = !(strm->txn->flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10894 return 1;
10895}
10896
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10897/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10898static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10899smp_fetch_http_auth(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]10900 const struct arg *args, struct sample *smp, const char *kw, void *private)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10901{
10902
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10903 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10904 return 0;
10905
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10906 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10907
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10908 if (!get_http_auth(strm))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10909 return 0;
10910
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10911 smp->type = SMP_T_BOOL;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10912 smp->data.uint = check_user(args->data.usr, strm->txn->auth.user, strm->txn->auth.pass);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10913 return 1;
10914}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10915
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10916/* Accepts exactly 1 argument of type userlist */
10917static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10918smp_fetch_http_auth_grp(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]10919 const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10920{
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10921 if (!args || args->type != ARGT_USR)
10922 return 0;
10923
10924 CHECK_HTTP_MESSAGE_FIRST();
10925
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10926 if (!get_http_auth(strm))
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10927 return 0;
10928
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10929 /* if the user does not belong to the userlist or has a wrong password,
10930 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10931 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10932 */
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10933 if (!check_user(args->data.usr, strm->txn->auth.user, strm->txn->auth.pass))
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10934 return 0;
10935
10936 /* pat_match_auth() will need the user list */
10937 smp->ctx.a[0] = args->data.usr;
10938
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10939 smp->type = SMP_T_STR;
10940 smp->flags = SMP_F_CONST;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10941 smp->data.str.str = strm->txn->auth.user;
10942 smp->data.str.len = strlen(strm->txn->auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10943
10944 return 1;
10945}
10946
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10947/* Try to find the next occurrence of a cookie name in a cookie header value.
10948 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
10949 * the cookie value is returned into *value and *value_l, and the function
10950 * returns a pointer to the next pointer to search from if the value was found.
10951 * Otherwise if the cookie was not found, NULL is returned and neither value
10952 * nor value_l are touched. The input <hdr> string should first point to the
10953 * header's value, and the <hdr_end> pointer must point to the first character
10954 * not part of the value. <list> must be non-zero if value may represent a list
10955 * of values (cookie headers). This makes it faster to abort parsing when no
10956 * list is expected.
10957 */
10958static char *
10959extract_cookie_value(char *hdr, const char *hdr_end,
10960 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]10961 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10962{
10963 char *equal, *att_end, *att_beg, *val_beg, *val_end;
10964 char *next;
10965
10966 /* we search at least a cookie name followed by an equal, and more
10967 * generally something like this :
10968 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
10969 */
10970 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
10971 /* Iterate through all cookies on this line */
10972
10973 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
10974 att_beg++;
10975
10976 /* find att_end : this is the first character after the last non
10977 * space before the equal. It may be equal to hdr_end.
10978 */
10979 equal = att_end = att_beg;
10980
10981 while (equal < hdr_end) {
10982 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
10983 break;
10984 if (http_is_spht[(unsigned char)*equal++])
10985 continue;
10986 att_end = equal;
10987 }
10988
10989 /* here, <equal> points to '=', a delimitor or the end. <att_end>
10990 * is between <att_beg> and <equal>, both may be identical.
10991 */
10992
10993 /* look for end of cookie if there is an equal sign */
10994 if (equal < hdr_end && *equal == '=') {
10995 /* look for the beginning of the value */
10996 val_beg = equal + 1;
10997 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
10998 val_beg++;
10999
11000 /* find the end of the value, respecting quotes */
11001 next = find_cookie_value_end(val_beg, hdr_end);
11002
11003 /* make val_end point to the first white space or delimitor after the value */
11004 val_end = next;
11005 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
11006 val_end--;
11007 } else {
11008 val_beg = val_end = next = equal;
11009 }
11010
11011 /* We have nothing to do with attributes beginning with '$'. However,
11012 * they will automatically be removed if a header before them is removed,
11013 * since they're supposed to be linked together.
11014 */
11015 if (*att_beg == '$')
11016 continue;
11017
11018 /* Ignore cookies with no equal sign */
11019 if (equal == next)
11020 continue;
11021
11022 /* Now we have the cookie name between att_beg and att_end, and
11023 * its value between val_beg and val_end.
11024 */
11025
11026 if (att_end - att_beg == cookie_name_l &&
11027 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
11028 /* let's return this value and indicate where to go on from */
11029 *value = val_beg;
11030 *value_l = val_end - val_beg;
11031 return next + 1;
11032 }
11033
11034 /* Set-Cookie headers only have the name in the first attr=value part */
11035 if (!list)
11036 break;
11037 }
11038
11039 return NULL;
11040}
11041
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11042/* Fetch a captured HTTP request header. The index is the position of
11043 * the "capture" option in the configuration file
11044 */
11045static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]11046smp_fetch_capture_header_req(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11047 const struct arg *args, struct sample *smp, const char *kw, void *private)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11048{
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]11049 struct proxy *fe = strm_fe(strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11050 int idx;
11051
11052 if (!args || args->type != ARGT_UINT)
11053 return 0;
11054
11055 idx = args->data.uint;
11056
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11057 if (idx > (fe->nb_req_cap - 1) || strm->req_cap == NULL || strm->req_cap[idx] == NULL)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11058 return 0;
11059
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11060 smp->type = SMP_T_STR;
11061 smp->flags |= SMP_F_CONST;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11062 smp->data.str.str = strm->req_cap[idx];
11063 smp->data.str.len = strlen(strm->req_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11064
11065 return 1;
11066}
11067
11068/* Fetch a captured HTTP response header. The index is the position of
11069 * the "capture" option in the configuration file
11070 */
11071static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]11072smp_fetch_capture_header_res(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11073 const struct arg *args, struct sample *smp, const char *kw, void *private)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11074{
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]11075 struct proxy *fe = strm_fe(strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11076 int idx;
11077
11078 if (!args || args->type != ARGT_UINT)
11079 return 0;
11080
11081 idx = args->data.uint;
11082
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11083 if (idx > (fe->nb_rsp_cap - 1) || strm->res_cap == NULL || strm->res_cap[idx] == NULL)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11084 return 0;
11085
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11086 smp->type = SMP_T_STR;
11087 smp->flags |= SMP_F_CONST;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11088 smp->data.str.str = strm->res_cap[idx];
11089 smp->data.str.len = strlen(strm->res_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11090
11091 return 1;
11092}
11093
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11094/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
11095static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]11096smp_fetch_capture_req_method(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]11097 const struct arg *args, struct sample *smp, const char *kw, void *private)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11098{
11099 struct chunk *temp;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11100 struct http_txn *txn = strm->txn;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11101 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11102
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11103 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11104 return 0;
11105
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11106 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11107
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11108 while (*ptr != ' ' && *ptr != '\0') /* find first space */
11109 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11110
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11111 temp = get_trash_chunk();
11112 temp->str = txn->uri;
11113 temp->len = ptr - txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11114 smp->data.str = *temp;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11115 smp->type = SMP_T_STR;
11116 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11117
11118 return 1;
11119
11120}
11121
11122/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
11123static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]11124smp_fetch_capture_req_uri(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11125 const struct arg *args, struct sample *smp, const char *kw, void *private)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11126{
11127 struct chunk *temp;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11128 struct http_txn *txn = strm->txn;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11129 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11130
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11131 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11132 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11133
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11134 ptr = txn->uri;
11135
11136 while (*ptr != ' ' && *ptr != '\0') /* find first space */
11137 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11138
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11139 if (!*ptr)
11140 return 0;
11141
11142 ptr++; /* skip the space */
11143
11144 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11145 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11146 if (!ptr)
11147 return 0;
11148 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
11149 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11150
11151 smp->data.str = *temp;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11152 smp->data.str.len = ptr - temp->str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11153 smp->type = SMP_T_STR;
11154 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11155
11156 return 1;
11157}
11158
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11159/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
11160 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11161 */
11162static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]11163smp_fetch_capture_req_ver(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]11164 const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11165{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11166 struct http_txn *txn = strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11167
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11168 if (!txn || txn->req.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11169 return 0;
11170
11171 if (txn->req.flags & HTTP_MSGF_VER_11)
11172 smp->data.str.str = "HTTP/1.1";
11173 else
11174 smp->data.str.str = "HTTP/1.0";
11175
11176 smp->data.str.len = 8;
11177 smp->type = SMP_T_STR;
11178 smp->flags = SMP_F_CONST;
11179 return 1;
11180
11181}
11182
11183/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
11184 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11185 */
11186static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]11187smp_fetch_capture_res_ver(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]11188 const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11189{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11190 struct http_txn *txn = strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11191
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11192 if (!txn || txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11193 return 0;
11194
11195 if (txn->rsp.flags & HTTP_MSGF_VER_11)
11196 smp->data.str.str = "HTTP/1.1";
11197 else
11198 smp->data.str.str = "HTTP/1.0";
11199
11200 smp->data.str.len = 8;
11201 smp->type = SMP_T_STR;
11202 smp->flags = SMP_F_CONST;
11203 return 1;
11204
11205}
11206
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11207
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11208/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11209 * 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]11210 * 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]11211 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11212 * 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]11213 * Accepts exactly 1 argument of type string. If the input options indicate
11214 * that no iterating is desired, then only last value is fetched if any.
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]11215 * The returned sample is of type CSTR. Can be used to parse cookies in other
11216 * files.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11217 */
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]11218int smp_fetch_cookie(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11219 const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11220{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11221 struct http_txn *txn;
11222 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11223 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11224 const struct http_msg *msg;
11225 const char *hdr_name;
11226 int hdr_name_len;
11227 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11228 int occ = 0;
11229 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11230
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11231 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11232 return 0;
11233
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11234 if (!ctx) {
11235 /* first call */
11236 ctx = &static_hdr_ctx;
11237 ctx->idx = 0;
11238 smp->ctx.a[2] = ctx;
11239 }
11240
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11241 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11242
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11243 txn = strm->txn;
11244 idx = &strm->txn->hdr_idx;
11245
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]11246 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11247 msg = &txn->req;
11248 hdr_name = "Cookie";
11249 hdr_name_len = 6;
11250 } else {
11251 msg = &txn->rsp;
11252 hdr_name = "Set-Cookie";
11253 hdr_name_len = 10;
11254 }
11255
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11256 if (!occ && !(opt & SMP_OPT_ITERATE))
11257 /* no explicit occurrence and single fetch => last cookie by default */
11258 occ = -1;
11259
11260 /* OK so basically here, either we want only one value and it's the
11261 * last one, or we want to iterate over all of them and we fetch the
11262 * next one.
11263 */
11264
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11265 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11266 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11267 /* search for the header from the beginning, we must first initialize
11268 * the search parameters.
11269 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11270 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11271 ctx->idx = 0;
11272 }
11273
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11274 smp->flags |= SMP_F_VOL_HDR;
11275
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11276 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11277 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
11278 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11279 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
11280 goto out;
11281
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11282 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11283 continue;
11284
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11285 smp->ctx.a[0] = ctx->line + ctx->val;
11286 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11287 }
11288
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11289 smp->type = SMP_T_STR;
11290 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11291 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]11292 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]11293 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11294 &smp->data.str.str,
11295 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11296 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11297 found = 1;
11298 if (occ >= 0) {
11299 /* one value was returned into smp->data.str.{str,len} */
11300 smp->flags |= SMP_F_NOT_LAST;
11301 return 1;
11302 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11303 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11304 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11305 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11306 /* all cookie headers and values were scanned. If we're looking for the
11307 * last occurrence, we may return it now.
11308 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11309 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11310 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11311 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11312}
11313
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11314/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11315 * 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]11316 * multiple cookies may be parsed on the same line. The returned sample is of
11317 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11318 */
11319static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]11320smp_fetch_cookie_cnt(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]11321 const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11322{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11323 struct http_txn *txn;
11324 struct hdr_idx *idx;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11325 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11326 const struct http_msg *msg;
11327 const char *hdr_name;
11328 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11329 int cnt;
11330 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11331 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11332
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11333 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11334 return 0;
11335
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11336 CHECK_HTTP_MESSAGE_FIRST();
11337
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11338 txn = strm->txn;
11339 idx = &strm->txn->hdr_idx;
11340
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]11341 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11342 msg = &txn->req;
11343 hdr_name = "Cookie";
11344 hdr_name_len = 6;
11345 } else {
11346 msg = &txn->rsp;
11347 hdr_name = "Set-Cookie";
11348 hdr_name_len = 10;
11349 }
11350
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11351 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]11352 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11353 ctx.idx = 0;
11354 cnt = 0;
11355
11356 while (1) {
11357 /* Note: val_beg == NULL every time we need to fetch a new header */
11358 if (!val_beg) {
11359 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
11360 break;
11361
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11362 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11363 continue;
11364
11365 val_beg = ctx.line + ctx.val;
11366 val_end = val_beg + ctx.vlen;
11367 }
11368
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11369 smp->type = SMP_T_STR;
11370 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11371 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11372 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]11373 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11374 &smp->data.str.str,
11375 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11376 cnt++;
11377 }
11378 }
11379
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]11380 smp->type = SMP_T_UINT;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11381 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11382 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11383 return 1;
11384}
11385
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11386/* Fetch an cookie's integer value. The integer value is returned. It
11387 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
11388 */
11389static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]11390smp_fetch_cookie_val(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]11391 const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11392{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]11393 int ret = smp_fetch_cookie(px, sess, strm, opt, args, smp, kw, private);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11394
11395 if (ret > 0) {
11396 smp->type = SMP_T_UINT;
11397 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
11398 }
11399
11400 return ret;
11401}
11402
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11403/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]11404/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11405/************************************************************************/
11406
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11407/*
11408 * Given a path string and its length, find the position of beginning of the
11409 * query string. Returns NULL if no query string is found in the path.
11410 *
11411 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
11412 *
11413 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
11414 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11415static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11416{
11417 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]11418
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11419 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11420 return p ? p + 1 : NULL;
11421}
11422
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11423static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11424{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11425 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11426}
11427
11428/*
11429 * Given a url parameter, find the starting position of the first occurence,
11430 * or NULL if the parameter is not found.
11431 *
11432 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
11433 * the function will return query_string+8.
11434 */
11435static char*
11436find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11437 char* url_param_name, size_t url_param_name_l,
11438 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11439{
11440 char *pos, *last;
11441
11442 pos = query_string;
11443 last = query_string + query_string_l - url_param_name_l - 1;
11444
11445 while (pos <= last) {
11446 if (pos[url_param_name_l] == '=') {
11447 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
11448 return pos;
11449 pos += url_param_name_l + 1;
11450 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11451 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11452 pos++;
11453 pos++;
11454 }
11455 return NULL;
11456}
11457
11458/*
11459 * Given a url parameter name, returns its value and size into *value and
11460 * *value_l respectively, and returns non-zero. If the parameter is not found,
11461 * zero is returned and value/value_l are not touched.
11462 */
11463static int
11464find_url_param_value(char* path, size_t path_l,
11465 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11466 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11467{
11468 char *query_string, *qs_end;
11469 char *arg_start;
11470 char *value_start, *value_end;
11471
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11472 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11473 if (!query_string)
11474 return 0;
11475
11476 qs_end = path + path_l;
11477 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11478 url_param_name, url_param_name_l,
11479 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11480 if (!arg_start)
11481 return 0;
11482
11483 value_start = arg_start + url_param_name_l + 1;
11484 value_end = value_start;
11485
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11486 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11487 value_end++;
11488
11489 *value = value_start;
11490 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]11491 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11492}
11493
11494static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]11495smp_fetch_url_param(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Thierry FOURNIERf41a8092014-12-07 18:37:57 +0100[diff] [blame]11496 const struct arg *args, struct sample *smp, const char *kw, void *private)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11497{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11498 char delim = '?';
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11499 struct http_msg *msg;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11500
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11501 if (!args || args[0].type != ARGT_STR ||
11502 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11503 return 0;
11504
11505 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11506
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11507 msg = &strm->txn->req;
11508
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11509 if (args[1].type)
11510 delim = *args[1].data.str.str;
11511
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11512 if (!find_url_param_value(msg->chn->buf->p + msg->sl.rq.u, msg->sl.rq.u_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11513 args->data.str.str, args->data.str.len,
11514 &smp->data.str.str, &smp->data.str.len,
11515 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11516 return 0;
11517
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11518 smp->type = SMP_T_STR;
11519 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11520 return 1;
11521}
11522
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11523/* Return the signed integer value for the specified url parameter (see url_param
11524 * above).
11525 */
11526static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]11527smp_fetch_url_param_val(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11528 const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11529{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]11530 int ret = smp_fetch_url_param(px, sess, strm, opt, args, smp, kw, private);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11531
11532 if (ret > 0) {
11533 smp->type = SMP_T_UINT;
11534 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
11535 }
11536
11537 return ret;
11538}
11539
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11540/* This produces a 32-bit hash of the concatenation of the first occurrence of
11541 * the Host header followed by the path component if it begins with a slash ('/').
11542 * This means that '*' will not be added, resulting in exactly the first Host
11543 * entry. If no Host header is found, then the path is used. The resulting value
11544 * is hashed using the url hash followed by a full avalanche hash and provides a
11545 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
11546 * high-traffic sites without having to store whole paths.
11547 * this differs from the base32 functions in that it includes the url parameters
11548 * as well as the path
11549 */
11550static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]11551smp_fetch_url32(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11552 const struct arg *args, struct sample *smp, const char *kw, void *private)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11553{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11554 struct http_txn *txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11555 struct hdr_ctx ctx;
11556 unsigned int hash = 0;
11557 char *ptr, *beg, *end;
11558 int len;
11559
11560 CHECK_HTTP_MESSAGE_FIRST();
11561
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11562 txn = strm->txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11563 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11564 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]11565 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
11566 ptr = ctx.line + ctx.val;
11567 len = ctx.vlen;
11568 while (len--)
11569 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
11570 }
11571
11572 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11573 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]11574 beg = http_get_path(txn);
11575 if (!beg)
11576 beg = end;
11577
11578 for (ptr = beg; ptr < end ; ptr++);
11579
11580 if (beg < ptr && *beg == '/') {
11581 while (beg < ptr)
11582 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
11583 }
11584 hash = full_hash(hash);
11585
11586 smp->type = SMP_T_UINT;
11587 smp->data.uint = hash;
11588 smp->flags = SMP_F_VOL_1ST;
11589 return 1;
11590}
11591
11592/* This concatenates the source address with the 32-bit hash of the Host and
11593 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
11594 * per-url counters. The result is a binary block from 8 to 20 bytes depending
11595 * on the source address length. The URL hash is stored before the address so
11596 * that in environments where IPv6 is insignificant, truncating the output to
11597 * 8 bytes would still work.
11598 */
11599static int
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]11600smp_fetch_url32_src(struct proxy *px, struct session *sess, struct stream *strm, unsigned int opt,
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11601 const struct arg *args, struct sample *smp, const char *kw, void *private)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11602{
11603 struct chunk *temp;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]11604 struct connection *cli_conn = objt_conn(sess->origin);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11605
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]11606 if (!smp_fetch_url32(px, sess, strm, opt, args, smp, kw, private))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11607 return 0;
11608
11609 temp = get_trash_chunk();
11610 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
11611 temp->len += sizeof(smp->data.uint);
11612
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11613 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11614 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11615 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]11616 temp->len += 4;
11617 break;
11618 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11619 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]11620 temp->len += 16;
11621 break;
11622 default:
11623 return 0;
11624 }
11625
11626 smp->data.str = *temp;
11627 smp->type = SMP_T_BIN;
11628 return 1;
11629}
11630
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11631/* This function is used to validate the arguments passed to any "hdr" fetch
11632 * keyword. These keywords support an optional positive or negative occurrence
11633 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
11634 * is assumed that the types are already the correct ones. Returns 0 on error,
11635 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
11636 * error message in case of error, that the caller is responsible for freeing.
11637 * The initial location must either be freeable or NULL.
11638 */
Thierry FOURNIER49f45af2014-12-08 19:50:43 +0100[diff] [blame]11639int val_hdr(struct arg *arg, char **err_msg)
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11640{
11641 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]11642 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11643 return 0;
11644 }
11645 return 1;
11646}
11647
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11648/* takes an UINT value on input supposed to represent the time since EPOCH,
11649 * adds an optional offset found in args[0] and emits a string representing
11650 * the date in RFC-1123/5322 format.
11651 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]11652static int sample_conv_http_date(struct stream *stream, const struct arg *args,
Thierry FOURNIER68a556e2015-02-23 15:11:11 +0100[diff] [blame]11653 struct sample *smp, void *private)
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11654{
11655 const char day[7][4] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
11656 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
11657 struct chunk *temp;
11658 struct tm *tm;
11659 time_t curr_date = smp->data.uint;
11660
11661 /* add offset */
11662 if (args && (args[0].type == ARGT_SINT || args[0].type == ARGT_UINT))
11663 curr_date += args[0].data.sint;
11664
11665 tm = gmtime(&curr_date);
11666
11667 temp = get_trash_chunk();
11668 temp->len = snprintf(temp->str, temp->size - temp->len,
11669 "%s, %02d %s %04d %02d:%02d:%02d GMT",
11670 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
11671 tm->tm_hour, tm->tm_min, tm->tm_sec);
11672
11673 smp->data.str = *temp;
11674 smp->type = SMP_T_STR;
11675 return 1;
11676}
11677
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11678/* Match language range with language tag. RFC2616 14.4:
11679 *
11680 * A language-range matches a language-tag if it exactly equals
11681 * the tag, or if it exactly equals a prefix of the tag such
11682 * that the first tag character following the prefix is "-".
11683 *
11684 * Return 1 if the strings match, else return 0.
11685 */
11686static inline int language_range_match(const char *range, int range_len,
11687 const char *tag, int tag_len)
11688{
11689 const char *end = range + range_len;
11690 const char *tend = tag + tag_len;
11691 while (range < end) {
11692 if (*range == '-' && tag == tend)
11693 return 1;
11694 if (*range != *tag || tag == tend)
11695 return 0;
11696 range++;
11697 tag++;
11698 }
11699 /* Return true only if the last char of the tag is matched. */
11700 return tag == tend;
11701}
11702
11703/* Arguments: The list of expected value, the number of parts returned and the separator */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]11704static int sample_conv_q_prefered(struct stream *stream, const struct arg *args,
Thierry FOURNIER68a556e2015-02-23 15:11:11 +0100[diff] [blame]11705 struct sample *smp, void *private)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11706{
11707 const char *al = smp->data.str.str;
11708 const char *end = al + smp->data.str.len;
11709 const char *token;
11710 int toklen;
11711 int qvalue;
11712 const char *str;
11713 const char *w;
11714 int best_q = 0;
11715
11716 /* Set the constant to the sample, because the output of the
11717 * function will be peek in the constant configuration string.
11718 */
11719 smp->flags |= SMP_F_CONST;
11720 smp->data.str.size = 0;
11721 smp->data.str.str = "";
11722 smp->data.str.len = 0;
11723
11724 /* Parse the accept language */
11725 while (1) {
11726
11727 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11728 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11729 al++;
11730 if (al >= end)
11731 break;
11732
11733 /* Start of the fisrt word. */
11734 token = al;
11735
11736 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11737 while (al < end && *al != ';' && *al != ',' && !isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11738 al++;
11739 if (al == token)
11740 goto expect_comma;
11741
11742 /* Length of the token. */
11743 toklen = al - token;
11744 qvalue = 1000;
11745
11746 /* Check if the token exists in the list. If the token not exists,
11747 * jump to the next token.
11748 */
11749 str = args[0].data.str.str;
11750 w = str;
11751 while (1) {
11752 if (*str == ';' || *str == '\0') {
11753 if (language_range_match(token, toklen, w, str-w))
11754 goto look_for_q;
11755 if (*str == '\0')
11756 goto expect_comma;
11757 w = str + 1;
11758 }
11759 str++;
11760 }
11761 goto expect_comma;
11762
11763look_for_q:
11764
11765 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11766 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11767 al++;
11768 if (al >= end)
11769 goto process_value;
11770
11771 /* If ',' is found, process the result */
11772 if (*al == ',')
11773 goto process_value;
11774
11775 /* If the character is different from ';', look
11776 * for the end of the header part in best effort.
11777 */
11778 if (*al != ';')
11779 goto expect_comma;
11780
11781 /* Assumes that the char is ';', now expect "q=". */
11782 al++;
11783
11784 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11785 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11786 al++;
11787 if (al >= end)
11788 goto process_value;
11789
11790 /* Expect 'q'. If no 'q', continue in best effort */
11791 if (*al != 'q')
11792 goto process_value;
11793 al++;
11794
11795 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11796 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11797 al++;
11798 if (al >= end)
11799 goto process_value;
11800
11801 /* Expect '='. If no '=', continue in best effort */
11802 if (*al != '=')
11803 goto process_value;
11804 al++;
11805
11806 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11807 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11808 al++;
11809 if (al >= end)
11810 goto process_value;
11811
11812 /* Parse the q value. */
11813 qvalue = parse_qvalue(al, &al);
11814
11815process_value:
11816
11817 /* If the new q value is the best q value, then store the associated
11818 * language in the response. If qvalue is the biggest value (1000),
11819 * break the process.
11820 */
11821 if (qvalue > best_q) {
11822 smp->data.str.str = (char *)w;
11823 smp->data.str.len = str - w;
11824 if (qvalue >= 1000)
11825 break;
11826 best_q = qvalue;
11827 }
11828
11829expect_comma:
11830
11831 /* Expect comma or end. If the end is detected, quit the loop. */
11832 while (al < end && *al != ',')
11833 al++;
11834 if (al >= end)
11835 break;
11836
11837 /* Comma is found, jump it and restart the analyzer. */
11838 al++;
11839 }
11840
11841 /* Set default value if required. */
11842 if (smp->data.str.len == 0 && args[1].type == ARGT_STR) {
11843 smp->data.str.str = args[1].data.str.str;
11844 smp->data.str.len = args[1].data.str.len;
11845 }
11846
11847 /* Return true only if a matching language was found. */
11848 return smp->data.str.len != 0;
11849}
11850
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11851/* This function executes one of the set-{method,path,query,uri} actions. It
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11852 * takes the string from the variable 'replace' with length 'len', then modifies
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11853 * the relevant part of the request line accordingly. Then it updates various
11854 * pointers to the next elements which were moved, and the total buffer length.
11855 * It finds the action to be performed in p[2], previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11856 * parse_set_req_line(). It returns 0 in case of success, -1 in case of internal
11857 * error, though this can be revisited when this code is finally exploited.
11858 *
11859 * 'action' can be '0' to replace method, '1' to replace path, '2' to replace
11860 * query string and 3 to replace uri.
11861 *
11862 * In query string case, the mark question '?' must be set at the start of the
11863 * string by the caller, event if the replacement query string is empty.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11864 */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11865int http_replace_req_line(int action, const char *replace, int len,
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]11866 struct proxy *px, struct stream *s)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11867{
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]11868 struct http_txn *txn = s->txn;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11869 char *cur_ptr, *cur_end;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11870 int offset = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11871 int delta;
11872
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11873 switch (action) {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11874 case 0: // method
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]11875 cur_ptr = s->req.buf->p;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11876 cur_end = cur_ptr + txn->req.sl.rq.m_l;
11877
11878 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11879 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11880 txn->req.sl.rq.m_l += delta;
11881 txn->req.sl.rq.u += delta;
11882 txn->req.sl.rq.v += delta;
11883 break;
11884
11885 case 1: // path
11886 cur_ptr = http_get_path(txn);
11887 if (!cur_ptr)
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]11888 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11889
11890 cur_end = cur_ptr;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]11891 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]11892 cur_end++;
11893
11894 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11895 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11896 txn->req.sl.rq.u_l += delta;
11897 txn->req.sl.rq.v += delta;
11898 break;
11899
11900 case 2: // query
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11901 offset = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]11902 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11903 cur_end = cur_ptr + txn->req.sl.rq.u_l;
11904 while (cur_ptr < cur_end && *cur_ptr != '?')
11905 cur_ptr++;
11906
11907 /* skip the question mark or indicate that we must insert it
11908 * (but only if the format string is not empty then).
11909 */
11910 if (cur_ptr < cur_end)
11911 cur_ptr++;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11912 else if (len > 1)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11913 offset = 0;
11914
11915 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11916 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11917 txn->req.sl.rq.u_l += delta;
11918 txn->req.sl.rq.v += delta;
11919 break;
11920
11921 case 3: // uri
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]11922 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11923 cur_end = cur_ptr + txn->req.sl.rq.u_l;
11924
11925 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11926 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11927 txn->req.sl.rq.u_l += delta;
11928 txn->req.sl.rq.v += delta;
11929 break;
11930
11931 default:
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11932 return -1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11933 }
11934
11935 /* commit changes and adjust end of message */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11936 delta = buffer_replace2(s->req.buf, cur_ptr, cur_end, replace + offset, len - offset);
Thierry FOURNIER7f6192c2015-04-26 18:01:40 +0200[diff] [blame]11937 txn->req.sl.rq.l += delta;
11938 txn->hdr_idx.v[0].len += delta;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11939 http_msg_move_end(&txn->req, delta);
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11940 return 0;
11941}
11942
11943/* This function executes one of the set-{method,path,query,uri} actions. It
11944 * builds a string in the trash from the specified format string. It finds
11945 * the action to be performed in p[2], previously filled by function
11946 * parse_set_req_line(). The replacement action is excuted by the function
11947 * http_action_set_req_line_exec(). It always returns 1. If an error occurs
11948 * the action is canceled, but the rule processing continue.
11949 */
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]11950int http_action_set_req_line(struct http_req_rule *rule, struct proxy *px, struct stream *s)
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]11951{
11952 chunk_reset(&trash);
11953
11954 /* If we have to create a query string, prepare a '?'. */
11955 if (*(int *)&rule->arg.act.p[2] == 2)
11956 trash.str[trash.len++] = '?';
11957 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, (struct list *)&rule->arg.act.p[0]);
11958
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]11959 http_replace_req_line(*(int *)&rule->arg.act.p[2], trash.str, trash.len, px, s);
Thierry FOURNIER01c30122015-03-14 14:14:47 +0100[diff] [blame]11960 return 1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11961}
11962
11963/* parse an http-request action among :
11964 * set-method
11965 * set-path
11966 * set-query
11967 * set-uri
11968 *
11969 * All of them accept a single argument of type string representing a log-format.
11970 * The resulting rule makes use of arg->act.p[0..1] to store the log-format list
11971 * head, and p[2] to store the action as an int (0=method, 1=path, 2=query, 3=uri).
11972 * It returns 0 on success, < 0 on error.
11973 */
11974int parse_set_req_line(const char **args, int *orig_arg, struct proxy *px, struct http_req_rule *rule, char **err)
11975{
11976 int cur_arg = *orig_arg;
11977
11978 rule->action = HTTP_REQ_ACT_CUSTOM_CONT;
11979
11980 switch (args[0][4]) {
11981 case 'm' :
11982 *(int *)&rule->arg.act.p[2] = 0;
11983 rule->action_ptr = http_action_set_req_line;
11984 break;
11985 case 'p' :
11986 *(int *)&rule->arg.act.p[2] = 1;
11987 rule->action_ptr = http_action_set_req_line;
11988 break;
11989 case 'q' :
11990 *(int *)&rule->arg.act.p[2] = 2;
11991 rule->action_ptr = http_action_set_req_line;
11992 break;
11993 case 'u' :
11994 *(int *)&rule->arg.act.p[2] = 3;
11995 rule->action_ptr = http_action_set_req_line;
11996 break;
11997 default:
11998 memprintf(err, "internal error: unhandled action '%s'", args[0]);
11999 return -1;
12000 }
12001
12002 if (!*args[cur_arg] ||
12003 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
12004 memprintf(err, "expects exactly 1 argument <format>");
12005 return -1;
12006 }
12007
12008 LIST_INIT((struct list *)&rule->arg.act.p[0]);
12009 proxy->conf.args.ctx = ARGC_HRQ;
12010 parse_logformat_string(args[cur_arg], proxy, (struct list *)&rule->arg.act.p[0], LOG_OPT_HTTP,
12011 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
12012 proxy->conf.args.file, proxy->conf.args.line);
12013
12014 (*orig_arg)++;
12015 return 0;
12016}
12017
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12018/*
12019 * Return the struct http_req_action_kw associated to a keyword.
12020 */
12021struct http_req_action_kw *action_http_req_custom(const char *kw)
12022{
12023 if (!LIST_ISEMPTY(&http_req_keywords.list)) {
12024 struct http_req_action_kw_list *kw_list;
12025 int i;
12026
12027 list_for_each_entry(kw_list, &http_req_keywords.list, list) {
12028 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
12029 if (!strcmp(kw, kw_list->kw[i].kw))
12030 return &kw_list->kw[i];
12031 }
12032 }
12033 }
12034 return NULL;
12035}
12036
12037/*
12038 * Return the struct http_res_action_kw associated to a keyword.
12039 */
12040struct http_res_action_kw *action_http_res_custom(const char *kw)
12041{
12042 if (!LIST_ISEMPTY(&http_res_keywords.list)) {
12043 struct http_res_action_kw_list *kw_list;
12044 int i;
12045
12046 list_for_each_entry(kw_list, &http_res_keywords.list, list) {
12047 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
12048 if (!strcmp(kw, kw_list->kw[i].kw))
12049 return &kw_list->kw[i];
12050 }
12051 }
12052 }
12053 return NULL;
12054}
12055
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12056/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12057/* All supported ACL keywords must be declared here. */
12058/************************************************************************/
12059
12060/* Note: must not be declared <const> as its list will be overwritten.
12061 * Please take care of keeping this list alphabetically sorted.
12062 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]12063static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12064 { "base", "base", PAT_MATCH_STR },
12065 { "base_beg", "base", PAT_MATCH_BEG },
12066 { "base_dir", "base", PAT_MATCH_DIR },
12067 { "base_dom", "base", PAT_MATCH_DOM },
12068 { "base_end", "base", PAT_MATCH_END },
12069 { "base_len", "base", PAT_MATCH_LEN },
12070 { "base_reg", "base", PAT_MATCH_REG },
12071 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]12072
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12073 { "cook", "req.cook", PAT_MATCH_STR },
12074 { "cook_beg", "req.cook", PAT_MATCH_BEG },
12075 { "cook_dir", "req.cook", PAT_MATCH_DIR },
12076 { "cook_dom", "req.cook", PAT_MATCH_DOM },
12077 { "cook_end", "req.cook", PAT_MATCH_END },
12078 { "cook_len", "req.cook", PAT_MATCH_LEN },
12079 { "cook_reg", "req.cook", PAT_MATCH_REG },
12080 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12081
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12082 { "hdr", "req.hdr", PAT_MATCH_STR },
12083 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
12084 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
12085 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
12086 { "hdr_end", "req.hdr", PAT_MATCH_END },
12087 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
12088 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
12089 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12090
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12091 /* these two declarations uses strings with list storage (in place
12092 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
12093 * and delete functions are relative to the list management. The parse
12094 * and match method are related to the corresponding fetch methods. This
12095 * is very particular ACL declaration mode.
12096 */
12097 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
12098 { "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]12099
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12100 { "path", "path", PAT_MATCH_STR },
12101 { "path_beg", "path", PAT_MATCH_BEG },
12102 { "path_dir", "path", PAT_MATCH_DIR },
12103 { "path_dom", "path", PAT_MATCH_DOM },
12104 { "path_end", "path", PAT_MATCH_END },
12105 { "path_len", "path", PAT_MATCH_LEN },
12106 { "path_reg", "path", PAT_MATCH_REG },
12107 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12108
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12109 { "req_ver", "req.ver", PAT_MATCH_STR },
12110 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12111
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12112 { "scook", "res.cook", PAT_MATCH_STR },
12113 { "scook_beg", "res.cook", PAT_MATCH_BEG },
12114 { "scook_dir", "res.cook", PAT_MATCH_DIR },
12115 { "scook_dom", "res.cook", PAT_MATCH_DOM },
12116 { "scook_end", "res.cook", PAT_MATCH_END },
12117 { "scook_len", "res.cook", PAT_MATCH_LEN },
12118 { "scook_reg", "res.cook", PAT_MATCH_REG },
12119 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12120
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12121 { "shdr", "res.hdr", PAT_MATCH_STR },
12122 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
12123 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
12124 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
12125 { "shdr_end", "res.hdr", PAT_MATCH_END },
12126 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
12127 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
12128 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12129
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12130 { "url", "url", PAT_MATCH_STR },
12131 { "url_beg", "url", PAT_MATCH_BEG },
12132 { "url_dir", "url", PAT_MATCH_DIR },
12133 { "url_dom", "url", PAT_MATCH_DOM },
12134 { "url_end", "url", PAT_MATCH_END },
12135 { "url_len", "url", PAT_MATCH_LEN },
12136 { "url_reg", "url", PAT_MATCH_REG },
12137 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12138
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12139 { "urlp", "urlp", PAT_MATCH_STR },
12140 { "urlp_beg", "urlp", PAT_MATCH_BEG },
12141 { "urlp_dir", "urlp", PAT_MATCH_DIR },
12142 { "urlp_dom", "urlp", PAT_MATCH_DOM },
12143 { "urlp_end", "urlp", PAT_MATCH_END },
12144 { "urlp_len", "urlp", PAT_MATCH_LEN },
12145 { "urlp_reg", "urlp", PAT_MATCH_REG },
12146 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12147
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]12148 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12149}};
12150
12151/************************************************************************/
12152/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12153/************************************************************************/
12154/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]12155static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12156 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12157 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
12158 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
12159
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]12160 /* capture are allocated and are permanent in the stream */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12161 { "capture.req.hdr", smp_fetch_capture_header_req, ARG1(1, UINT), NULL, SMP_T_STR, SMP_USE_HRQHP },
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]12162
12163 /* retrieve these captures from the HTTP logs */
12164 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12165 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12166 { "capture.req.ver", smp_fetch_capture_req_ver, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12167
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12168 { "capture.res.hdr", smp_fetch_capture_header_res, ARG1(1, UINT), NULL, SMP_T_STR, SMP_USE_HRSHP },
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]12169 { "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]12170
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12171 /* cookie is valid in both directions (eg: for "stick ...") but cook*
12172 * are only here to match the ACL's name, are request-only and are used
12173 * for ACL compatibility only.
12174 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12175 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
12176 { "cookie", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV|SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12177 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
12178 { "cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
12179
12180 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
12181 * only here to match the ACL's name, are request-only and are used for
12182 * ACL compatibility only.
12183 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12184 { "hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRQHV|SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12185 { "hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
12186 { "hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
12187 { "hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
12188
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]12189 { "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]12190 { "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]12191 { "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]12192 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12193 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]12194 { "query", smp_fetch_query, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12195
12196 /* HTTP protocol on the request path */
12197 { "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]12198 { "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]12199
12200 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12201 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
12202 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12203
12204 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12205 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
12206 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12207
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12208 /* 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]12209 { "req.cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12210 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
12211 { "req.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
12212
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12213 { "req.fhdr", smp_fetch_fhdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]12214 { "req.fhdr_cnt", smp_fetch_fhdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12215 { "req.hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12216 { "req.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
12217 { "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]12218 { "req.hdr_names", smp_fetch_hdr_names, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12219 { "req.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
12220
12221 /* 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]12222 { "res.cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12223 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
12224 { "res.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
12225
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12226 { "res.fhdr", smp_fetch_fhdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]12227 { "res.fhdr_cnt", smp_fetch_fhdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12228 { "res.hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12229 { "res.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
12230 { "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]12231 { "res.hdr_names", smp_fetch_hdr_names, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12232 { "res.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
12233
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12234 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12235 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12236 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
12237 { "scook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12238 { "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]12239
12240 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12241 { "shdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12242 { "shdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
12243 { "shdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
12244 { "shdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
12245
12246 { "status", smp_fetch_stcode, 0, NULL, SMP_T_UINT, SMP_USE_HRSHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12247 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12248 { "url32", smp_fetch_url32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
12249 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12250 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
12251 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12252 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
12253 { "urlp" , smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12254 { "urlp_val", smp_fetch_url_param_val, ARG2(1,STR,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
12255 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12256}};
12257
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12258
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12259/************************************************************************/
12260/* All supported converter keywords must be declared here. */
12261/************************************************************************/
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12262/* Note: must not be declared <const> as its list will be overwritten */
12263static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12264 { "http_date", sample_conv_http_date, ARG1(0,SINT), NULL, SMP_T_UINT, SMP_T_STR},
12265 { "language", sample_conv_q_prefered, ARG2(1,STR,STR), NULL, SMP_T_STR, SMP_T_STR},
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12266 { NULL, NULL, 0, 0, 0 },
12267}};
12268
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12269/************************************************************************/
12270/* All supported http-request action keywords must be declared here. */
12271/************************************************************************/
12272struct http_req_action_kw_list http_req_actions = {
12273 .scope = "http",
12274 .kw = {
12275 { "set-method", parse_set_req_line },
12276 { "set-path", parse_set_req_line },
12277 { "set-query", parse_set_req_line },
12278 { "set-uri", parse_set_req_line },
Willy Tarreaucb703b02015-04-03 09:52:01 +0200[diff] [blame]12279 { NULL, NULL }
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12280 }
12281};
12282
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12283__attribute__((constructor))
12284static void __http_protocol_init(void)
12285{
12286 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]12287 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12288 sample_register_convs(&sample_conv_kws);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12289 http_req_keywords_register(&http_req_actions);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12290}
12291
12292
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]12293/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]12294 * Local variables:
12295 * c-indent-level: 8
12296 * c-basic-offset: 8
12297 * End:
12298 */